Position adjusting device and lawn mower

Abstract

Provided are a position adjusting device (50) and a lawn mower (10). The lawn mower (10) comprises a cutting system (20). The cutting system (20) comprises a cutting device (40). The cutting device (40) comprises a cutterhead (42) for lawn cutting. The position adjusting device (50) comprises support arms (62) and transverse guide members (64), wherein one end of each support arm (62) is connected to a transverse guide member (64); the cutting device (64) slides relative to the transverse guide members (64). The position adjusting device (50) comprises a height adjustment assembly (60), and the cutting device (40) is connected to the height adjustment assembly (60). The height adjustment assembly (60) is used to drive the cutting device (40) to move in the vertical direction (Y), so as to adjust the height of the cutting device (40). The rotating speed of the cutterhead (42) in a first state is higher than or equal to the rotating speed of the cutterhead (42) in a second state, the first state being a state in which the movement action has been executed and the cutting device (40) is started, and the second state being a state in which the movement action is executed. The rotating speed of the cutterhead (42) in the first state is higher than or equal to the rotating speed of the cutterhead (42) in a third state, the third state being a state in which a height adjustment action is executed.

Description

Position adjustment device and lawn mower

[0001] This application claims priority to the Chinese patent applications filed with the China Patent Office on April 9, 2024, with application number 202420724270.6 and application name “Lawn Mower” and application number 202410424006.5 and application name “Lawn Mower”, the entire contents of which are incorporated by reference into this application.

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on July 10, 2024, with application number 202410924424.0 and application name “Position Adjustment Device and Lawn Mower”, the entire contents of which are incorporated by reference into this application.

[0003] This application claims priority to the Chinese patent application filed with the China Patent Office on July 10, 2024, with application number 202421630252.8 and application name “Cutting system and lawn mower”, the entire contents of which are incorporated by reference into this application.

[0004] This application claims priority to the Chinese patent application filed with the China Patent Office on July 10, 2024, with application number 202421630299.4 and application name “Cutting system and lawn mower”, the entire contents of which are incorporated by reference into this application.

[0005] This application claims priority to the Chinese patent application filed with the China Patent Office on July 10, 2024, with application number 202421630722.0 and application name “Position Adjustment Device and Lawn Mower”, the entire contents of which are incorporated by reference into this application.

[0006] This application claims priority to the Chinese patent application filed with the China Patent Office on July 10, 2024, with application number 202421630679.8 and application name “Position adjustment device, cutting system and lawn mower”, the entire contents of which are incorporated by reference into this application.

[0007] This application claims priority to the Chinese patent application filed with the China Patent Office on July 10, 2024, with application number 202410924482.3 and application name “Position adjustment device, cutting system, lawn mower and lawn mower use method”, all contents of which are incorporated by reference into this application. Technical Field

[0008] The present application relates to the technical field of lawn mowing equipment, and in particular to a position adjustment device and a lawn mower. Background Art

[0009] In some areas of people's life, lawns are usually set up to improve the environmental aesthetics and comfort. The lawn needs to be periodically cut for maintenance to keep the height of the lawn from being too high. Currently, lawn mowers are usually used to cut and trim the lawn. The lawn mower can be a self-moving device. In the case of unmanned operation, the lawn mower can automatically complete the cutting and trimming work of the lawn. However, in the prior art, the cutter head of the lawn mower is arranged at the center position of the lawn mower. For a general lawn, the mowing area of the lawn mower is determined by the travel route of the lawn mower, and the cutter head cannot adjust the mowing position by itself, which limits the mowing efficiency. For a lawn with a physical fence set on the periphery, the cutter head cannot cut the part of the lawn between the cutter head and the physical fence when the lawn mower is close to the physical fence, resulting in a larger area of the lawn close to the physical fence that needs to be manually trimmed again. For an open lawn, the cutter head cannot cut the part of the lawn between the cutter head and the lawn boundary when the lawn mower is close to the lawn boundary, resulting in a larger area of the lawn close to the boundary that needs to be manually trimmed again. SUMMARY

[0010] The embodiment of the present application provides a position adjusting device and a lawn mower, which are beneficial to improve the cutting efficiency and cutting effect.

[0011] The first aspect of the embodiment of the present application provides a position adjusting device for adjusting the position of a cutting device of a lawn mower. The position adjusting device comprises a support arm and a transverse guide.

[0012] One end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device comprises a cutter head. The cutting device moves along the length direction of the transverse guide under the action of a driving force. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed.

[0013] In the case that the position adjusting device of the embodiment of the present application is applied to a lawn mower, the cutting device can be connected to the transverse guide in the position adjusting device. When the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide, the cutting device moves in the length direction of the transverse guide to adjust the position of the cutting device. By using the above-mentioned position adjusting device, the lawn mower can obtain a larger mowing range, and the working efficiency of the lawn mower is improved.

[0014] When the rotating speed of the cutter head in the first state is greater than the rotating speed of the cutter head in the second state, the rotating speed of the cutter head when the cutting device is moving is less than the rotating speed of the cutter head when the cutting device is working, which can reduce the interference caused by high-speed rotation of the cutter head on the movement of the cutting device, effectively reduce the shaking of the cutting device during movement, and improve the stability of the cutting device during movement. On the other hand, the resistance to the movement of the cutting device can be reduced, and energy consumption can be saved. On the other hand, the movement is performed to adjust the cutting position of the cutter head, for example, to adjust the cutter head from the center position to the edge cutting position. During the adjustment of the cutting position of the cutter head, people or animals often exist around, causing safety hazards. At this time, an alarm sound needs to be emitted to drive away people or animals. The faster the rotating speed of the cutter head, the louder the noise emitted by the mower. If the noise is too loud, the alarm sound will be blocked, and people or animals cannot be normally driven away, affecting the normal operation of the mower. When the rotating speed of the cutter head is less than the rotating speed of the cutter head during normal mowing, the noise emitted by the rotating of the cutter head is small, and the noise will not block the alarm sound, which can ensure the smooth driving away of living obstacles.

[0015] When the rotating speed of the cutter head in the first state is equal to the rotating speed of the cutter head in the second state, the rotating speed of the cutter head when the cutting device is moving is consistent with the rotating speed of the cutter head when the cutting device is working, which can reduce the speed-up and speed-down actions of the cutting device, improve the speed of position adjustment of the cutting device, and further improve the working efficiency of the mower. On the other hand, the speed-up and speed-down actions of the cutting device are reduced, which can reduce the load of the motor of the cutting device and improve the service life of the motor.

[0016] In some possible implementations, the position adjustment device further includes a driving unit configured to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. The rotating speed of the cutter head in the first state is greater than or equal to the rotating speed of the cutter head in the third state, and the third state is a state in which the height adjustment action is performed.

[0017] When the rotating speed of the cutter head in the first state is greater than the rotating speed of the cutter head in the third state, the rotating speed of the cutter head when the cutting device is moving is less than the rotating speed of the cutter head when the cutting device is working, which can reduce the interference caused by high-speed rotation of the cutter head on the movement of the cutting device, effectively reduce the shaking of the cutting device during movement, and improve the stability of the cutting device during movement. On the other hand, the resistance to the movement of the cutting device can be reduced, and energy consumption can be saved. When the rotating speed of the cutter head in the first state is equal to the rotating speed of the cutter head in the third state, the rotating speed of the cutter head when the cutting device is moving is consistent with the rotating speed of the cutter head when the cutting device is working, which can reduce the speed-up and speed-down actions of the cutting device, improve the speed of position adjustment of the cutting device, and further improve the working efficiency of the mower. On the other hand, the speed-up and speed-down actions of the cutting device are reduced, which can reduce the load of the motor of the cutting device and improve the service life of the motor.

[0018] In some possible implementation manners, the state of performing the moving action is the second state, and the rotating speed of the cutter head in the second state is 0.

[0019] When the cutting device performs the position adjustment action, the cutter head stops rotating, which can minimize the shaking of the cutting device when the cutting device performs the position adjustment action, and ensures the stability of the movement process of the cutting device. Meanwhile, when the rotating speed of the cutter head is 0, the cutter head will not make noise due to rotation, and when it is necessary to drive away people or animals, the cutter head will not cause any shielding of the alarm sound, and the alarm sound can be ensured to reach the people or animals, and the smooth driving away of the people or animals can be ensured.

[0020] In some possible implementation manners, the state of performing the height adjustment action is the third state, and the rotating speed of the cutter head in the third state is 0.

[0021] When the cutting device performs the position adjustment action, the cutter head stops rotating, which can minimize the shaking of the cutting device when the cutting device performs the position adjustment action, and ensures the stability of the movement process of the cutting device. Meanwhile, when the rotating speed of the cutter head is 0, the cutter head will not make noise due to rotation, and when it is necessary to drive away people or animals, the cutter head will not cause any shielding of the alarm sound, and the alarm sound can be ensured to reach the people or animals, and the smooth driving away of the people or animals can be ensured.

[0022] In some possible implementation manners, the rotating speed of the cutter head in the second state is equal to the rotating speed of the cutter head in the third state.

[0023] The rotating speed of the cutter head in the second state is equal to the rotating speed of the cutter head in the third state. If the cutting device continuously performs the moving action and the height adjustment action, it is not necessary to adjust the rotating speed of the cutter head after the previous action is performed and before the next action is performed, the position adjustment rate is improved, and the working efficiency of the mower is further improved.

[0024] In some possible implementation manners, the support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide member is connected with the driving unit.

[0025] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down, and further drives the cutting device to move up and down, so as to realize the height adjustment of the cutting device. The support arm connected with the driving unit has low installation difficulty, and improves the stability of structural assembly.

[0026] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, without the need of other structures or components for force transmission. The driving unit can complete the lifting without a large acting force on the cutting device, and the operation is convenient.

[0027] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and movement of the transverse guide drives the support arm and the cutting device to move, without the need for too many structures and components to transmit force, thereby ensuring stability of the movement state.

[0028] The second aspect of the embodiments of the present application provides a position adjusting device for adjusting the position of a cutting device of a mower. The position adjusting device comprises a support arm, a transverse guide and a driving unit.

[0029] One end of the support arm is connected with the transverse guide. The cutting device is connected with the transverse guide. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. The driving unit is used to drive the support arm to move, so as to perform a height adjusting action, and adjust the height of the cutting device above the ground. After the moving action and the height adjusting action are performed, and the cutting device is started, the rotating speed of the cutter head in the non-grass jamming state is increased to 1800-3500 revolutions per minute. The cutter head is used for mowing.

[0030] In the case where the position adjusting device of the embodiments of the present application is applied to a mower, the cutting device can be connected with the transverse guide in the position adjusting device. When the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide, the cutting device moves in the length direction of the transverse guide, so as to adjust the position of the cutting device. By using the above position adjusting device, the mower can obtain a larger mowing range, and the working efficiency of the mower is improved.

[0031] In the embodiments of the present application, when the moving action and the height adjustment action are completed and the cutting device is started, the cutter head speed cannot be lower than 1800 revolutions per minute, otherwise, the force on the vegetation when it contacts the blade is too small to cut the vegetation smoothly, and the grass is prone to be stuck, even causing the cutter head to stop rotating, which may also cause missed cutting, and the resistance of the grass to the cutter head will be greater, causing the cutter head to stall. When the cutter head speed is between 1800 revolutions per minute and 3500 revolutions per minute, it is an ideal cutting state, and further increasing the cutter head speed will basically maintain the corresponding cutting efficiency, and even too fast speed cannot form sufficient contact with the grass surface, and the cutting effect is slightly worse. At the same time, the speed during cutting cannot be greater than 3500 revolutions per minute, and higher speed will form greater noise due to too fast rotation of the cutter head, bring more unnecessary energy consumption, and reduce the safety factor and increase the risk factor. Therefore, the cutter head speed is maintained at 1800-3500 revolutions per minute, which is an ideal cutting state. The cutter head speed will also affect the service life of the blade, when the cutter head speed is below 1800 revolutions per minute, it is basically in a non-cutting state, and the service life of the blade can be maintained basically stable, when the cutter head speed reaches 1800 revolutions per minute, it enters the working state of cutting vegetation, and the service life of the blade begins to decrease, when the cutter head speed exceeds 1800 revolutions per minute, the service life of the blade decreases obviously, and too fast speed is easy to form negative pressure, which will suck particles and foreign matters (such as small stones, etc.) outside the vegetation to the blade of the cutter head, causing damage to the cutting edge, thereby affecting the service life of the blade. Therefore, the cutter head speed is maintained at 1800-3500 revolutions per minute, which is an ideal cutting state, and the service life of the blade is also maintained below a normal wear expectation.

[0032] In some possible implementations, the support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide is connected with the driving unit.

[0033] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down, further driving the cutting device to move up and down, so as to realize height adjustment of the cutting device. In this way, the support arm and the driving unit are connected, which has low installation difficulty and improves the stability of structural assembly.

[0034] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, without the need of other structures or components for force transmission. The driving unit can complete lifting without a large force acting on the cutting device, and operation is convenient.

[0035] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and drives the support arm and the cutting device to move through movement of the transverse guide, without the need of too many structures and components for force transmission, so as to ensure the stability of the movement state.

[0036] The third aspect of the embodiments of the present application provides a position adjusting device for adjusting the position of a cutting device of a mower. The position adjusting device comprises a support arm, a transverse guide, and a driving unit.

[0037] One end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. The driving unit is used to drive the support arm to move, so as to perform a height adjusting action to adjust the height of the cutting device above the ground. When the height adjusting action is performed, the cutting device is configured to rotate relative to the support arm, so that the included angle between the cutting surface of the cutting device and the working surface is less than 5 degrees in the mowing state. The front end of the cutting surface of the cutting device is lower than the rear end in the advancing direction of the mower. The cutting device is used for mowing.

[0038] In the case of the position adjusting device of the embodiments of the present application applied to the mower, the cutting device can be connected to the transverse guide in the position adjusting device. When the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide, the cutting device moves in the length direction of the transverse guide to adjust the position of the cutting device. By using the above position adjusting device, the mower can obtain a larger mowing range, and the working efficiency of the mower is improved.

[0039] In the mowing state, when the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees, the cutting effect is poor, the cutting device cannot cut off the grass with high hardness, and the mower cannot work normally. When the included angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut off most of the grass, and the working of the mower is not affected. In the advancing direction of the mower, the front end of the cutting surface is lower than the rear end, and under the double action of the advancing movement of the machine body and the rotation of the cutter head, the cutting force of the cutting device is greater, and the cutting device is more likely to cut off the grass.

[0040] The fourth aspect of the embodiments of the present application provides a position adjusting device for adjusting the position of a cutting device of a mower. The position adjusting device comprises a support arm, a support base, a driving unit, and a transverse guide.

[0041] One end of the support arm is rotatably connected to the support base. The other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device comprises a cutter head. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. The driving unit is used to drive the support arm to rotate relative to the support base, so as to perform a height adjusting action to adjust the height of the cutting device above the ground. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed. The cutting device is used for mowing.

[0042] The position adjusting device of the embodiment of the present application is applied to the case of the mower, and the cutting device can be slidably connected with the transverse guide in the position adjusting device. The position adjusting device can be used to adjust the position of the cutting device through the support arm, the support base, the driving unit and the transverse guide. Under the mutual cooperation of the support arm, the support base, the driving unit and the transverse guide, the cutting device can move vertically along the vertical direction. In addition, when the cutting device is subjected to a component force or a resultant force along the length direction of the transverse guide, the cutting device slides relative to the transverse guide to move in the length direction of the transverse guide. For example, the cutting device can be manually pushed to slide relative to the transverse guide. Alternatively, the cutting device can be pushed to slide relative to the transverse guide by means of the transverse driving assembly to realize the automatic adjustment of the position of the cutting device.

[0043] The mounting structure of the support arm and the transverse guide is adopted to realize the position adjustment of the cutting device, reduce the space occupied by the position adjusting device and the cutting device in the machine body, and help realize the intelligentization and miniaturization of the mower.

[0044] The position adjusting device can realize the adjustment of the cutting device in the height direction and the adjustment in the horizontal direction. Therefore, the mower can obtain a larger mowing range and improve the working efficiency of the mower by using the above position adjusting device without changing the movement direction and the movement path of the mower.

[0045] When the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees in the mowing state, the cutting effect is poor, the cutting device cannot cut the grass with high hardness, and the mower cannot work normally. When the included angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut most of the grass, and the working of the mower is not affected.

[0046] In some possible manners, the support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide is connected with the driving unit.

[0047] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down to further drive the cutting device to move up and down, thereby realizing the height adjustment of the cutting device. The support arm and the driving unit are connected in this manner, which has low installation difficulty and improves the stability of the structure assembly.

[0048] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device without the need of other structures or components for force transmission. The driving unit does not need to have a large acting force on the cutting device to complete the lifting, and the operation is convenient.

[0049] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and movement of the transverse guide drives the support arm and the cutting device to move, without the need for too many structures and components to transmit force, thereby ensuring stability of the movement state.

[0050] A fifth aspect of the embodiment of the application provides a position adjusting device for adjusting a position of a cutting device of a mower. The position adjusting device comprises a support arm, a support base, a driving unit, a transverse guide and a transverse driving assembly.

[0051] One end of the support arm is rotatably connected to the support base. The other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device comprises a cutter head. The transverse driving assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide. The driving unit is configured to drive the support arm to rotate relative to the support base to perform a height adjusting action, so as to adjust the height of the cutting device relative to the ground. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state in which the moving action is performed. The cutting device is configured to mow grass.

[0052] In the case where the position adjusting device of the embodiment of the application is applied to a mower, the cutting device can be slidably connected to the transverse guide in the position adjusting device. The position adjusting device can be used to adjust the position of the cutting device through the support arm, the support base, the driving unit and the transverse guide. Under the mutual cooperation of the support arm, the support base, the driving unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse driving assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. The transverse movement of the cutting device driven by the transverse driving assembly is conducive to automatic adjustment of the position of the cutting device and improves the adjustment efficiency and accuracy of the position of the cutting device.

[0053] The mounting structure in which the support arm and the transverse guide are connected to each other reduces the space occupied by the position adjusting device and the cutting device in the machine body while achieving adjustment of the position of the cutting device, which helps to realize the intelligence and miniaturization of the mower.

[0054] The position adjusting device can be used to adjust the height and the horizontal direction of the cutting device. Therefore, the mower has a larger mowing range and higher working efficiency under the same movement direction and path.

[0055] When the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees, the cutting effect is poor, the cutting device cannot cut the grass with high hardness, and the mower cannot work normally. When the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut most of the grass, and the working of the mower is not affected.

[0056] In some possible implementation manners, the support arm comprises a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side of the transverse connecting arm. The end of the first sub-support arm is rotatably connected to the support base. The transverse guide is rotatably connected to the end of the second sub-support arm. The transverse connecting arm is connected to the driving unit.

[0057] By applying torque to the transverse connecting arm, the first sub-support arm can be driven to rotate relative to the support base, and at the same time, the second sub-support arm drives the cutting device to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is beneficial to improve the overall compactness of the support arm and occupy less space.

[0058] In some possible implementation manners, the support arm is connected to the driving unit; and / or the cutting device is connected to the driving unit; and / or the transverse guide is connected to the driving unit.

[0059] The support arm is connected to the driving unit. The driving unit drives the support arm to rotate up and down, and further drives the cutting device to move up and down, so as to realize height adjustment of the cutting device. In the manner that the support arm is connected to the driving unit, the installation difficulty is low, and the stability of structure assembly is improved.

[0060] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, without the need for other structures or components to transmit force. The driving unit does not need to have a large force acting on the cutting device to complete the lifting, and the operation is convenient.

[0061] The transverse guide is connected to the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and drives the support arm and the cutting device to move through the movement of the transverse guide, without the need for too many structures and components to transmit force, so as to ensure the stability of the movement state.

[0062] The sixth aspect of the embodiment of the application provides a position adjustment device for adjusting the cutting position of the mower. The position adjustment device comprises at least two support arms, at least two transverse guides, a support base, a driving unit and a transverse driving assembly.

[0063] The number of the transverse guides is consistent with and one-to-one corresponding to the number of the support arms. The at least two support arms are arranged in a vertical direction. One end of the at least two support arms is respectively rotatably connected to the support base. The other end of the at least two support arms is respectively rotatably connected to the corresponding transverse guide. The at least two support arms are relatively fixed; and / or, the at least two transverse guides are relatively fixed. The cutting device is connected to the at least one transverse guide. The cutting device comprises a cutter head. The transverse driving assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide. The driving unit is used to drive the at least two support arms to rotate relative to the support base to perform a height adjustment action to adjust the height of the cutting device relative to the ground. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state of performing the moving action. The cutting device is used for mowing grass.

[0064] In the case of the position adjustment device applied to the mower, the cutting device can be slidably connected to the transverse guide in the position adjustment device. The position adjustment device can be used to adjust the position of the cutting device through the support arm, the support base, the driving unit and the transverse guide. Under the mutual cooperation of the support arm, the support base, the driving unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse driving assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. By driving the cutting device to move transversely through the transverse driving assembly, the automation of the position adjustment of the cutting device is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device are improved.

[0065] The at least two support arms are relatively fixed, and / or the at least two transverse guides are relatively fixed.

[0066] The support base, the support arm and the transverse guide can form a linkage structure relationship, thereby further improving the connection stability between the support base, the support arm and the transverse guide and the position stability of the cutting device during the rotation of the support arm.

[0067] The mounting structure of the support arm and the transverse guide is adopted to realize the position adjustment of the cutting device while reducing the space occupied by the position adjustment device and the cutting device in the machine body, which is helpful to realize the intelligence and miniaturization of the mower.

[0068] Through the position adjustment device, the cutting device can be adjusted in the height direction and adjusted in the horizontal direction. Based on this, the mower has a larger mowing range and improved working efficiency under the condition that the movement direction and the movement path of the mower are unchanged.

[0069] In some possible implementation manners, at least one of the at least two support arms comprises a transverse connecting arm, a first sub-support arm, and a second sub-support arm, the first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side of the transverse connecting arm, an end of the first sub-support arm is rotatably connected to the support base, and the transverse guide is rotatably connected to an end of the second sub-support arm, and the transverse connecting arm is connected to the driving unit.

[0070] The torque applied to the transverse connecting arm can drive the first sub-support arm to rotate relative to the support base, and the second sub-support arm drives the cutting device to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is beneficial to improving the overall structural compactness of the support arm and reducing the occupied space.

[0071] In some possible implementation manners, each support arm comprises at least two transverse connecting arms, the at least two transverse connecting arms constitute a transverse connecting arm group, the first sub-support arm is arranged on one side of the transverse connecting arm group, and the second sub-support arm is arranged on the other side of the transverse connecting arm group.

[0072] The number of transverse connecting arms is set to at least two, which is beneficial to improving the mechanical strength of each support arm. In addition, at least one transverse connecting arm can be connected to the driving unit, which improves the arrangement flexibility of the driving unit.

[0073] In some possible implementation manners, at least one support arm is connected to the driving unit; and / or the cutting device is connected to the driving unit; and / or at least one transverse guide is connected to the driving unit.

[0074] The support arm is connected to the driving unit. The driving unit drives the support arm to rotate up and down, and further drives the cutting device to move up and down, so as to realize the height adjustment of the cutting device. The support arm connected to the driving unit has low installation difficulty and improves the stability of structural assembly.

[0075] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, without the need of other structures or components for force transmission. The driving unit does not need to have a large force acting on the cutting device to complete the lifting, and the operation is convenient.

[0076] The transverse guide is connected to the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and drives the support arm and the cutting device to move through the movement of the transverse guide, without the need of too many structures and components for force transmission, so as to ensure the stability of the movement state.

[0077] In some possible implementation manners, the uppermost support arm is connected to the driving unit.

[0078] The driving unit is connected with one support arm, and can drive each support arm to rotate synchronously relative to the support base, so that the driving unit can be connected with the uppermost support arm through a connecting structure, thereby reducing the design difficulty of the connecting structure between the driving unit and each support arm.

[0079] In some possible implementation manners, the at least two lateral guides are respectively slidably connected with the cutting device.

[0080] The at least two lateral guides are respectively slidably connected with the cutting device. The support base, the two support arms, the two lateral guides and the cutting device can form a linkage structure relationship, thereby further improving the connection stability among the support base, the support arms, the lateral guides and the cutting device. Each lateral guide is connected with the cutting device, and the relative fixation of each lateral guide is realized through the cutting device, so that the additional fixing member for connecting each lateral guide or each support arm is omitted, and the accessory cost is saved. Meanwhile, based on the result of the linkage structure relationship, the angle between the cutter head and the ground is ensured to be consistent during the height adjustment of the cutting device.

[0081] In some possible implementation manners, the at least two support arms are connected with each other; and / or, the at least two lateral guides are connected with each other.

[0082] The at least two support arms are connected with each other. Each support arm is connected through an additional connecting member. The support base, each support arm, each lateral guide and the connecting member can form a linkage structure relationship, thereby further improving the connection stability among the support base, the support arms, the lateral guides and the connecting member and the position stability of the cutting device during the rotation of the cutting device relative to the support arms.

[0083] The at least two lateral guides are connected with each other. Each lateral guide is connected through an additional connecting member. The support base, each support arm, each lateral guide and the connecting member can form a linkage structure relationship, thereby further improving the connection stability among the support base, the support arms, the lateral guides and the connecting member and the position stability of the cutting device during the rotation of the cutting device relative to the support arms.

[0084] In some possible implementation manners, the support arm is rotatably connected to the support base through a horizontal shaft. The support arm comprises a first connecting portion. The lateral guide is rotatably connected to the first connecting portion.

[0085] The support arm and the support base are connected through a horizontal shaft, thereby reducing the structural design difficulty and disassembly difficulty of the rotation pair formed between the support arm and the support base, and reducing the machining cost and maintenance cost.

[0086] In some possible implementation manners, the support arm comprises a second connecting portion. The driving unit is connected to the second connecting portion. The second connecting portion is located between the first connecting portion and the horizontal shaft.

[0087] The second connecting portion is located on a side of the horizontal shaft facing the first connecting portion, so that the overall structure formed by the driving unit and the support arm is relatively compact and occupies less space.

[0088] A seventh aspect of the embodiment of the present application provides a position adjusting device for adjusting the position of a cutting device of a mower. The position adjusting device comprises at least one support arm, a support base, a driving unit, a transverse guide and a transverse driving assembly.

[0089] The support arm comprises a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side of the transverse connecting arm. The end of the first sub-support arm is rotatably connected to the support base. The end of the second sub-support arm is rotatably connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device comprises a cutter head. The transverse driving assembly is connected to the cutting device to drive the cutting device to move in the length direction of the transverse guide. The driving unit is used to drive the support arm to rotate relative to the support base to perform a height adjustment action, so as to adjust the height of the cutting device relative to the ground. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state in which the moving action is performed. The cutting device is used for mowing grass.

[0090] In each support arm, the number of first sub-support arms is two. The first sub-support arms are arranged at intervals in the length direction of the transverse guide.

[0091] In each support arm, the number of second sub-support arms is two. The two second sub-support arms are arranged at intervals in the length direction of the transverse guide. A containing portion is formed between the two second sub-support arms.

[0092] In the case that the position adjusting device of the embodiment of the present application is applied to a mower, the cutting device can be slidably connected to the transverse guide in the position adjusting device. The position adjusting device can be used to adjust the position of the cutting device through the support arm, the support base, the driving unit and the transverse guide. Under the mutual cooperation of the support arm, the support base, the driving unit and the transverse guide, the cutting device can move vertically in the vertical direction. In addition, the transverse driving assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. In this way, the cutting device moves in the transverse direction through the transverse driving assembly, which is beneficial to realize the automatic adjustment of the position of the cutting device and improve the adjustment efficiency and accuracy of the position of the cutting device.

[0093] The installation structure of the support arm and the transverse guide are connected to each other, which can realize the position adjustment of the cutting device, reduce the space occupied by the position adjustment device and the cutting device in the machine body, and help realize the intelligentization and miniaturization of the mower.

[0094] The position adjustment device can realize the adjustment of the cutting device in the height direction and the adjustment in the horizontal direction. Based on this, the mower has a larger mowing range and improves the working efficiency of the mower by using the position adjustment device under the condition that the movement direction and the movement path of the mower are unchanged.

[0095] The torque applied to the transverse connecting arm can drive the first sub-support arm to rotate relative to the support base, and the second sub-support arm drives the cutting device to move vertically. The transverse connecting arm is located between the first sub-support arm and the second sub-support arm, which is beneficial to improve the overall compactness of the support arm and occupy less space.

[0096] When the position adjustment device is applied to the mower, part of the cutting device can be arranged in the accommodating portion to effectively utilize the space between the two second sub-support arms, which is beneficial to improve the compactness of the structure and reduce the overall volume and space occupation.

[0097] In some realizable modes, at least part of the driving unit is located between the two first sub-support arms. Part of the driving unit can be located between the two first sub-support arms to effectively utilize the space between the two first sub-support arms, which is beneficial to improve the compactness of the overall structure of the position adjustment device, reduce the overall volume, and occupy less space.

[0098] In some realizable modes, each support arm includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group, one side of the transverse connecting arm group is provided with the first sub-support arm, and the other side is provided with the second sub-support arm.

[0099] The number of transverse connecting arms is set to at least two, which is beneficial to improve the mechanical strength of each support arm. In addition, at least one transverse connecting arm can be connected with the driving unit to improve the arrangement flexibility of the driving unit.

[0100] In some realizable modes, the support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide is connected with the driving unit.

[0101] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down to further drive the cutting device to move up and down, realizing the height adjustment of the cutting device. The support arm is connected with the driving unit, which has low installation difficulty and improves the stability of the structure assembly.

[0102] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device without other structures or components for force transmission. The force acting on the cutting device by the driving unit does not need to be very large to complete the lifting, which is convenient to operate.

[0103] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and moves the support arm and the cutting device through the movement of the transverse guide, without too many structures and components for force transmission, thereby ensuring the stability of the movement state.

[0104] An eighth aspect of the embodiment of the present application provides a position adjusting device for adjusting the position of the cutting device of the mower. The position adjusting device comprises at least two support arms, at least two transverse guides, a support base, a driving unit and a transverse driving assembly.

[0105] The number of transverse guides is consistent with and one-to-one corresponds to the number of support arms. The at least two support arms are arranged in a vertical direction. Each support arm comprises a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side of the transverse connecting arm. The ends of the first sub-support arms of each support arm are rotatably connected with the support base, respectively. The ends of the second sub-support arms of each support arm are rotatably connected with the corresponding transverse guides, respectively.

[0106] The at least two support arms are relatively fixed, and / or the at least two transverse guides are relatively fixed.

[0107] The cutting device is connected with the at least one transverse guide. The cutting device comprises a cutter head. The transverse driving assembly is connected with the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide. The driving unit is used to drive the two support arms to rotate relative to the support base to perform a height adjusting action to adjust the height of the cutting device relative to the ground. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of performing the moving action. The cutting device is used for mowing grass.

[0108] The position adjusting device of the embodiment of the present application is applied to the case of the mower, the cutting device can be slidably connected with the transverse guide in the position adjusting device. The position adjusting device can be used to adjust the position of the cutting device through the support arm, the support base, the driving unit and the transverse guide. Under the mutual cooperation of the support arm, the support base, the driving unit and the transverse guide, the cutting device can move vertically along the vertical direction. In addition, the transverse driving assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. By driving the cutting device to move transversely through the transverse driving assembly, the automatic adjustment of the position of the cutting device is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device are improved.

[0109] The at least two support arms are relatively fixed, and / or the at least two transverse guides are relatively fixed.

[0110] The support base, each support arm and each transverse guide can form a linkage structure relationship, thereby facilitating further improvement of the connection stability between the support base, the support arm and the transverse guide and the position stability of the cutting device during rotation relative to the support arm.

[0111] The mounting structure of the support arm and the transverse guide connected with each other reduces the space occupied by the position adjusting device and the cutting device in the machine body while realizing the position adjustment of the cutting device, which is helpful to realize the intelligence and miniaturization of the mower.

[0112] Through the position adjusting device, the cutting device can be adjusted in the height direction and adjusted in the horizontal direction. Based on this, under the condition that the motion direction and the motion path of the mower are unchanged, the mower obtains a larger mowing range by using the above position adjusting device, thereby improving the working efficiency of the mower.

[0113] In some realizable modes, each support arm includes at least two transverse connecting arms, the at least two transverse connecting arms constitute a transverse connecting arm group, one side of the transverse connecting arm group is provided with a first sub support arm, and the other side is provided with a second sub support arm.

[0114] The number of transverse connecting arms is set to at least two, which is helpful to improve the mechanical strength of each support arm. In addition, at least one transverse connecting arm can be connected with the driving unit, thereby improving the arrangement flexibility of the driving unit.

[0115] In some realizable modes, at least one support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or at least one transverse guide is connected with the driving unit.

[0116] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down, and further drives the cutting device to move up and down, so as to realize the height adjustment of the cutting device. The support arm connected with the driving unit has low installation difficulty, and improves the stability of the structure assembly.

[0117] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, and does not need other structures or components to transmit force. The driving unit does not need large force acting on the cutting device to complete the lifting, and the operation is convenient.

[0118] The transverse guide is connected with the driving unit. The transverse guide is an intermediate connecting structure between the support arm and the cutting device. The movement of the transverse guide drives the support arm and the cutting device to move, without too many structures and components to transmit force, so as to ensure the stability of the movement state.

[0119] In some realizable modes, the transverse connecting arm of the uppermost support arm is connected with the driving unit.

[0120] The driving unit is connected with one support arm, which can drive each support arm to rotate relative to the support at the same time, so that the connection structure between the driving unit and the uppermost support arm can be provided, which is conducive to reducing the design difficulty of the connection structure between the driving unit and each support arm.

[0121] The torque applied to the transverse connecting arm can drive the first sub-support arm to rotate relative to the support, and the second sub-support arm drives the driver to move vertically. The transverse connecting arm as a force structure is located between the first sub-support arm and the second sub-support arm, which is conducive to improving the overall compactness of the support arm and occupying small space.

[0122] In some realizable modes, in each support arm, the number of first sub-support arms is two. The two first sub-support arms are arranged at intervals along the length direction of the transverse guide. Part of the driving unit is located between the two first sub-support arms.

[0123] Part of the driving unit can be located between the two first sub-support arms, so as to effectively utilize the space between the two first sub-support arms, which is conducive to improving the compactness of the overall structure of the position adjusting device, reducing the overall volume, and occupying small space.

[0124] In some realizable modes, in each support arm, the number of second sub-support arms is two. The two second sub-support arms are arranged at intervals along the length direction of the transverse guide. The two second sub-support arms form a containing part.

[0125] In the case that the position adjusting device is applied to the mower, part of the cutting device can be arranged in the containing part, so as to effectively utilize the space between the two second sub-support arms, which is conducive to improving the compactness of the structure, reducing the overall volume, and occupying small space.

[0126] In some possible implementation manners, the number of the supports is two. The two supports are spaced apart along the length direction of the transverse guide. The number of the first sub-support arms is two. The ends of the two first sub-support arms are respectively rotatably connected to the supports. At least a part of the driving unit is located between the two supports.

[0127] At least a part of the driving unit is located between the two supports, so as to effectively utilize the space between the two supports, facilitate to improve the compactness of the overall structure of the position adjusting device, and reduce the overall volume and the occupied space.

[0128] In some possible implementation manners, the driving unit comprises a cam. The cam comprises a helical surface. The support arm is connected to the driving unit. The support arm abuts against the helical surface.

[0129] The helical surface of the cam is a continuous surface, so as to facilitate to improve the motion stability of the support arm during the swinging process relative to the support, and reduce the possibility of impact and jerk between the support arm and the cam.

[0130] In some possible implementation manners, the driving unit comprises a cam. The cam comprises a helical surface. The cutting device is connected to the driving unit. The cutting device abuts against the helical surface.

[0131] The helical surface of the cam is a continuous surface, so as to facilitate to improve the motion stability of the cutting device, and reduce the possibility of impact and jerk between the cutting device and the cam.

[0132] In some possible implementation manners, the driving unit comprises a cam. The cam comprises a helical surface. The transverse guide is connected to the driving unit. The transverse guide abuts against the helical surface.

[0133] The helical surface of the cam is a continuous surface, so as to facilitate to improve the motion stability of the transverse guide, and reduce the possibility of impact and jerk between the transverse guide and the cam.

[0134] In some possible implementation manners, the driving unit comprises a cam. The cam comprises a helical surface. The support arm is connected to the driving unit. The support arm abuts against the helical surface. The cutting device is connected to the driving unit. The cutting device abuts against the helical surface. The transverse guide is connected to the driving unit. The transverse guide abuts against the helical surface.

[0135] In some possible implementation manners, the transverse guide is a circular shaft, and the end of the transverse guide is connected to the end of the support arm.

[0136] The transverse guide is a circular shaft. The transverse guide and the support arm can be rotationally connected, without the need for additional circular rotation fittings, thereby reducing assembly difficulty and cost. The end of the transverse guide is connected to the support arm. When the support arm includes two sub-support arms, the connection between the cutting device and the transverse guide is kept moving between the two sub-support arms, without moving outside the sub-support arms, thereby avoiding the occurrence of a center of gravity offset, and ensuring the stability of the overall structure.

[0137] In some possible implementations, the transverse driving assembly includes a deflection cam. The deflection cam is configured to be connected to the cutting device. The deflection cam is configured to drive the cutting device to move on the transverse guide.

[0138] The deflection cam can provide a smooth driving force for the cutting device, thereby ensuring the stability of the cutting device during movement on the transverse guide.

[0139] In some possible implementations, the transverse driving assembly includes a lead screw and an adapter. The lead screw is threadedly connected to the adapter. The adapter is configured to be connected to the cutting device. The lead screw and the adapter are configured to drive the cutting device to slide relative to the transverse guide.

[0140] The lead screw and the adapter are threadedly connected, which is conducive to ensuring the smooth movement of the adapter and the displacement accuracy of the adapter, thereby facilitating the smooth movement of the cutting device and the displacement accuracy of the cutting device.

[0141] In some possible implementations, the transverse driving assembly includes a telescopic rod and an adapter. The telescopic rod is connected to the adapter. The adapter is configured to be connected to the cutting device. The telescopic rod and the adapter are configured to drive the cutting device to slide relative to the transverse guide.

[0142] The telescopic rod and the adapter are connected, which is conducive to ensuring the smooth movement of the adapter and the displacement accuracy of the adapter, thereby facilitating the smooth movement of the cutting device and the displacement accuracy of the cutting device.

[0143] In some possible implementations, the rotational speed of the cutter head in the first state is greater than the rotational speed of the cutter head in the third state. The third state is a state in which a height adjustment action is performed.

[0144] In some possible implementations, the second state is a state in which a movement action is performed, and the rotational speed of the cutter head in the second state is 0.

[0145] In some possible implementations, the third state is a state in which a height adjustment action is performed, and the rotational speed of the cutter head in the second state is equal to the rotational speed of the cutter head in the third state.

[0146] The ninth aspect of the embodiments of the present application provides a mower, which includes the position adjustment device of the above-mentioned embodiments.

[0147] The mower of the embodiment of the application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move in the transverse direction of the mower, and the mowing range of the mower is expanded without changing the movement path of the mower, thereby improving the mowing efficiency.

[0148] The tenth aspect of the embodiment of the application provides a mower comprising a machine body and a position adjusting device.

[0149] The position adjusting device is used for adjusting the position of the cutting device of the mower. The position adjusting device comprises a support arm and a transverse guide. One end of the support arm is connected to the transverse guide, and the length direction of the transverse guide forms an angle α with the advancing direction of the mower, the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide, and the cutting device comprises a cutter head. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. The rotating speed of the cutter head in a first state is greater than or equal to the rotating speed of the cutter head in a second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed.

[0150] The mower of the embodiment of the application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move in the transverse direction of the mower, and the mowing range of the mower is expanded without changing the movement path of the mower, thereby improving the mowing efficiency.

[0151] When the rotating speed of the cutter head in the first state is greater than the rotating speed of the cutter head in the second state, the rotating speed of the cutter head when the cutting device performs the moving action is less than the rotating speed of the cutter head when the cutting device works. On the one hand, the interference caused by the high-speed rotation of the cutter head on the moving of the cutting device can be reduced, the shaking of the cutting device during the movement is effectively reduced, and the stability of the cutting device during the movement is improved. On the other hand, the resistance received by the cutting device during the movement can be reduced, and the energy consumption is saved.

[0152] When the rotating speed of the cutter head in the first state is greater than the rotating speed of the cutter head in the second state, the rotating speed of the cutter head when the cutting device performs the moving action is consistent with the rotating speed of the cutter head when the cutting device performs the mowing work. On the one hand, the accelerating and decelerating actions of the cutting device can be reduced, the position adjusting speed of the cutting device is improved, and the working efficiency of the mower is improved. On the other hand, the accelerating and decelerating actions of the cutting device are reduced, the load of the motor of the cutting device is reduced, and the service life of the motor is improved.

[0153] The eleventh aspect of the embodiment of the application provides a mower comprising a machine body and a position adjusting device.

[0154] The position adjusting device is used for adjusting the position of the cutting device of the mower. The position adjusting device comprises a support arm, a transverse guide and a driving unit.

[0155] One end of the support arm is connected to the transverse guide, and the cutting device is connected to the transverse guide. The length direction of the transverse guide forms an angle a with the advancing direction of the mower, and the angle a is greater than 0 degrees and less than 180 degrees. The cutting device performs a moving action along the length direction of the transverse guide under the action of the driving force. The driving unit is used for driving the support arm to move to perform a height adjusting action, so as to adjust the height of the cutting device relative to the ground. After the moving action and the height adjusting action are completed, and the cutting device is started, the rotating speed of the cutter head in the non-grass blocking state is increased to 1800-3500 revolutions per minute. The cutter head is used for mowing grass.

[0156] The mower of the embodiment of the present application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move, and in the case that the movement path of the mower is unchanged, the mowing range of the mower is expanded, thereby improving the mowing efficiency.

[0157] In the embodiments of the present application, when the moving action and the height adjusting action are completed and the cutting device is started, the cutter head speed cannot be lower than 1800 rpm, otherwise, the force of the vegetation contacting the blade is too small to cut the vegetation smoothly, and the grass is prone to be stuck, even the cutter head is stopped due to the grass being stuck, which may also cause missed cutting, and the resistance of the grass to the cutter head is greater, causing the cutter head to stall. When the cutter head speed is between 1800 rpm and 3500 rpm, it is an ideal cutting state, and increasing the cutter head speed will basically maintain the corresponding cutting efficiency, and even too fast speed cannot form enough contact with the grass surface, and the cutting effect is slightly worse. At the same time, the cutting speed cannot be greater than 3500 rpm, and higher speed will form greater noise due to the fast rotation of the cutter head, bring more unnecessary energy consumption, and the safety factor decreases and the risk factor increases. Therefore, the cutter head speed is maintained at 1800-3500 rpm, which is an ideal cutting state. The cutter head speed also affects the service life of the blade. When the cutter head speed is below 1800 rpm, it is basically in a non-cutting state, and the service life of the blade can be maintained basically stable. When the cutter head speed reaches 1800 rpm, it enters the working state of cutting vegetation, and the service life of the blade begins to decrease. When the cutter head speed exceeds 1800 rpm, the service life of the blade decreases obviously, and too fast speed can form negative pressure, which can suck particles such as small stones outside the vegetation to the blade of the cutter head, causing damage to the cutting edge, thereby affecting the service life of the cutting head. Therefore, the cutter head speed is maintained at 1800-3500 rpm, which is an ideal cutting state, and the service life of the cutting head is also maintained below a normal wear expectation.

[0158] The twelfth aspect of the embodiments of the present application provides a mower, comprising a machine body and a position adjusting device.

[0159] The position adjusting device is used for adjusting the position of the cutting device of the mower. The position adjusting device comprises a support arm, a transverse guide, and a driving unit.

[0160] One end of the support arm is connected to the transverse guide. The length direction of the transverse guide forms an angle α with the advancing direction of the mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. The driving unit is used for driving the support arm to move to perform a height adjusting action, so as to adjust the height of the cutting device relative to the ground. When the height adjusting action is performed, the cutting device is configured to rotate relative to the support arm, so that the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees in the mowing state. The front end of the cutting surface of the cutting device is lower than the rear end in the advancing direction of the mower. The cutting device is used for mowing grass.

[0161] The mower of the embodiment of the application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move, and the mowing range of the mower is expanded without changing the movement path of the mower, thereby improving the mowing efficiency. When the angle between the cutting surface of the cutting device and the working surface is greater than 5 degrees in the mowing state, the cutting effect is poor, the cutting device cannot cut the grass with high hardness, and the mower cannot work normally. When the included angle between the cutting surface of the cutting device and the working surface is less than 5 degrees, the cutting device can cut most of the grass, and the working of the mower is not affected.

[0162] The thirteenth aspect of the embodiment of the application provides a mower comprising a machine body and a position adjusting device.

[0163] The position adjusting device is used for adjusting the position of the cutting device of the mower. The position adjusting device comprises a support arm, a support base, a driving unit and a transverse guide.

[0164] One end of the support arm is rotatably connected to the support base. The other end of the support arm is connected to the transverse guide. The length direction of the transverse guide and the advancing direction of the mower form an included angle a. The included angle a is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device comprises a cutter head. The cutting device performs a moving action along the length direction of the transverse guide under the action of the driving force. The driving unit is used for driving the support arm to rotate relative to the support base to perform a height adjusting action, so as to adjust the height of the cutting device relative to the ground. The cutting device is used for mowing.

[0165] The mower of the embodiment of the application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move in the transverse direction of the mower, and the mowing range of the mower is expanded without changing the movement path of the mower, thereby improving the mowing efficiency.

[0166] The length direction of the transverse guide and the advancing direction of the mower form an included angle a. The transverse guide does not coincide with the advancing direction of the mower, and the movement of the cutting device in the length direction of the transverse guide causes the position of the cutting device to change in the transverse direction of the mower, thereby achieving the adjustment of different cutting positions of the mower in the same path.

[0167] In some implementable manners, the support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide is connected with the driving unit.

[0168] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down to further drive the cutting device to move up and down, so as to realize height adjustment of the cutting device. By adopting the mode of connecting the support arm with the driving unit, the installation difficulty is low, and the stability of structure assembly is improved.

[0169] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, without the force transmission of other structures or components. The driving unit can complete lifting without a large acting force on the cutting device, and the operation is convenient.

[0170] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device. The transverse guide drives the support arm and the cutting device to move through the movement of the transverse guide, without the force transmission of too many structures and components, so as to ensure the stability of the movement state.

[0171] The fourteenth aspect of the embodiment of the application provides a mower, which comprises a machine body and a position adjusting device.

[0172] The position adjusting device is used for adjusting the position of a cutting device of the mower. The position adjusting device comprises a support arm, a support base, a driving unit, a transverse guide and a transverse driving assembly.

[0173] One end of the support arm is rotatably connected to the support base. The other end of the support arm is connected to the transverse guide. The length direction of the transverse guide and the advancing direction of the mower form an angle α. The angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide. The cutting device comprises a cutter head. The transverse driving assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the transverse guide. The driving unit is used to drive the support arm to rotate relative to the support base to perform a height adjustment action, so as to adjust the height of the cutting device relative to the ground. The cutting device is used for mowing grass.

[0174] The mower of the embodiment of the application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move in the transverse direction of the mower, and in the case that the movement path of the mower is unchanged, the mowing range of the mower is expanded, so as to improve the mowing efficiency.

[0175] The length direction of the transverse guide and the advancing direction of the mower form an angle α. The transverse guide does not coincide with the advancing direction of the mower. The movement of the cutting device in the length direction of the transverse guide causes the position of the cutting device in the transverse direction of the mower to change, so as to realize the adjustment of different cutting positions of the mower in the same path.

[0176] The transverse driving assembly drives the cutting device to move along the transverse guide, so as to move the cutting device in the length direction of the transverse guide. In this way, the transverse driving assembly drives the cutting device to move transversely, which facilitates automatic adjustment of the position of the cutting device, improves the adjustment efficiency and accuracy of the position of the cutting device.

[0177] In some possible implementation manners, the support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide is connected with the driving unit.

[0178] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down, and further drives the cutting device to move up and down, so as to adjust the height of the cutting device. In this way, the support arm is connected with the driving unit, which is low in installation difficulty and improves the stability of structural assembly.

[0179] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, without the need of other structures or components for force transmission, so that the driving unit can complete lifting without a large acting force on the cutting device, and the operation is convenient.

[0180] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and drives the support arm and the cutting device to move through the movement of the transverse guide, without the need of too many structures and components for force transmission, so as to ensure the stability of the movement state.

[0181] The fifteenth aspect of the embodiment of the present application provides a mower, which comprises a body and a position adjustment device.

[0182] The position adjustment device is used for adjusting the position of a cutting device of the mower, and comprises at least two support arms, at least two transverse guides, a support base, a driving unit and a transverse driving assembly.

[0183] The number of the transverse guides is consistent with and corresponds to the number of the support arms. The at least two support arms are arranged in a vertical direction. One end of each of the at least two support arms is rotatably connected with the support base. The other end of each of the at least two support arms is rotatably connected with a corresponding transverse guide. An included angle α exists between the length direction of the transverse guide and the advancing direction of the mower. The included angle α is greater than 0 degrees and less than 180 degrees.

[0184] The at least two support arms are relatively fixed, and / or the at least two transverse guides are relatively fixed.

[0185] The cutting device is connected to the at least one lateral guide. The cutting device comprises a cutter head. The lateral driving assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the lateral guide. The driving unit is used to drive the at least two supporting arms to rotate relative to the support to perform a height adjusting action to adjust the height of the cutting device. The cutting device is used to mow grass.

[0186] The mowing machine of the embodiment of the present application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move in the lateral direction of the mowing machine, and the mowing range of the mowing machine is expanded without changing the movement path of the mowing machine, thereby improving the mowing efficiency.

[0187] The length direction of the lateral guide and the advancing direction of the mowing machine form an angle a. The lateral guide and the advancing direction of the mowing machine do not coincide, and the movement of the cutting device in the length direction of the lateral guide causes the position of the cutting device to change in the lateral direction of the mowing machine, thereby achieving the adjustment of different cutting positions of the mowing machine in the same path. The lateral driving assembly drives the cutting device to move along the lateral guide to move the cutting device in the length direction of the lateral guide. By driving the cutting device to move in the lateral direction through the lateral driving assembly, the automatic adjustment of the position of the cutting device is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device are improved.

[0188] The at least two supporting arms are relatively fixed, and / or the at least two lateral guides are relatively fixed.

[0189] The support, each supporting arm and each lateral guide can form a connecting rod structure relationship, thereby further improving the connection stability between the support, the supporting arm and the lateral guide and the position stability of the cutting device during the rotation of the supporting arm.

[0190] In some implementable manners, the supporting arm is connected to the driving unit; and / or the cutting device is connected to the driving unit; and / or the lateral guide is connected to the driving unit.

[0191] The supporting arm is connected to the driving unit. The driving unit drives the supporting arm to rotate up and down to further drive the cutting device to move up and down, thereby achieving the height adjustment of the cutting device. By connecting the supporting arm to the driving unit, the installation difficulty is low, and the stability of the structure assembly is improved.

[0192] The cutting device is connected to the driving unit. The driving unit is directly connected to the cutting device, and the force acting on the cutting device by the driving unit does not need to be very large to complete the lifting, and the operation is convenient.

[0193] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the support arm and the cutting device, and movement of the transverse guide drives the support arm and the cutting device to move, without the need for too many structures and components to transmit force, thereby ensuring stability of the movement state.

[0194] The mower provided by the sixteenth aspect of the embodiment of the application comprises a body and a position adjusting device.

[0195] The position adjusting device is used for adjusting the position of the cutting device of the mower, and comprises at least one support arm, a support base, a driving unit, a transverse guide and a transverse driving assembly.

[0196] The support arm comprises a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side of the transverse connecting arm. The end of the first sub-support arm is rotatably connected with the support base. The transverse guide is rotatably connected with the end of the second sub-support arm. The length direction of the transverse guide forms an angle α with the advancing direction of the mower. The angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected with the transverse guide. The cutting device comprises a cutter head. The transverse driving assembly is connected with the cutting device, so as to drive the cutting device to perform a moving action along the length direction of the transverse guide. The driving unit is used for driving the support arm to rotate relative to the support base, so as to perform a height adjusting action and adjust the height of the cutting device relative to the ground. The cutting device is used for mowing grass.

[0197] In each support arm, the number of the first sub-support arms is two. The two first sub-support arms are arranged at intervals along the length direction of the transverse guide.

[0198] In each support arm, the number of the second sub-support arms is two. The two second sub-support arms are arranged at intervals along the length direction of the transverse guide. A containing part is formed between the two second sub-support arms.

[0199] The mower provided by the embodiment of the application comprises the position adjusting device and the cutting device. The position adjusting device can adjust the relative position of the cutting device and the body. Under the driving action of the position adjusting device, the cutting device can move in the transverse direction of the mower, and in the case that the movement path of the mower is unchanged, the mowing range of the mower is expanded, thereby improving the mowing efficiency.

[0200] The length direction of the transverse guide is at an angle a with the advancing direction of the mower. The transverse guide is not coincident with the advancing direction of the mower, and the cutting device moves in the length direction of the transverse guide so that the cutting device changes position in the transverse direction of the mower, thereby achieving adjustment of different cutting positions of the mower in the same path. The transverse driving assembly drives the cutting device to move along the transverse guide, so that the cutting device moves in the length direction of the transverse guide. By driving the cutting device to move in the transverse direction through the transverse driving assembly, the position of the cutting device can be automatically adjusted, and the adjustment efficiency and accuracy of the position of the cutting device are improved.

[0201] By applying torque to the transverse connecting arm, the first sub-supporting arm can be driven to rotate relative to the support base, and at the same time, the second sub-supporting arm drives the driver to move vertically. The transverse connecting arm is located between the first sub-supporting arm and the second sub-supporting arm, which is beneficial to improve the overall compactness of the supporting arm and occupy less space.

[0202] When the position adjustment device is applied to a mower, the driver of the cutting device can be arranged in the accommodating portion, so as to effectively utilize the space between the two second sub-supporting arms, improve the compactness of the structure, reduce the overall size, and occupy less space.

[0203] In some possible implementations, the supporting arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the transverse guide is connected with the driving unit.

[0204] The supporting arm is connected with the driving unit. The driving unit drives the supporting arm to rotate up and down, and further drives the cutting device to move up and down, so as to adjust the height of the cutting device. In this way, the supporting arm is connected with the driving unit, which is low in installation difficulty and improves the stability of structural assembly.

[0205] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, without the need of other structures or components for force transmission, and the driving unit can complete lifting without a large force acting on the cutting device, which is convenient to operate.

[0206] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connecting structure between the supporting arm and the cutting device, and drives the supporting arm and the cutting device to move through the movement of the transverse guide, without the need of too many structures and components for force transmission, thereby ensuring the stability of the movement state.

[0207] The seventeenth aspect of the embodiments of the present application provides a mower, which comprises a body and a position adjustment device.

[0208] The position adjustment device is used for adjusting the position of a cutting device of a mower, and comprises at least two supporting arms, at least two transverse guides, a support base, a driving unit and a transverse driving assembly.

[0209] The number of the lateral guides is consistent with the number of the support arms and is arranged one by one. The at least two support arms are arranged in a vertical direction. Each support arm comprises a lateral connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the lateral connecting arm, and the second sub-support arm is arranged on the other side of the lateral connecting arm. The ends of the first sub-support arms of each support arm are rotatably connected with the support base respectively. The ends of the second sub-support arms of each support arm are rotatably connected with the corresponding lateral guides respectively. The length direction of the lateral guides has an angle α with the advancing direction of the mower. The angle α is greater than 0 degrees and less than 180 degrees.

[0210] The at least two support arms are relatively fixed, and / or the at least two lateral guides are relatively fixed.

[0211] The cutting device is connected to the at least one lateral guide. The cutting device comprises a cutter head. The lateral driving assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the lateral guide. The driving unit is used to drive the at least two support arms to rotate relative to the support base to perform a height adjustment action to adjust the height of the cutting device relative to the ground. The cutting device is used for mowing grass.

[0212] The mower of the embodiment of the present application comprises a position adjustment device and a cutting device. The position adjustment device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjustment device, the cutting device can move in the lateral direction of the mower, and in the case that the movement path of the mower is unchanged, the mowing range of the mower is expanded, thereby improving the mowing efficiency.

[0213] The length direction of the lateral guide has an angle α with the advancing direction of the mower. The lateral guide does not coincide with the advancing direction of the mower, and the movement of the cutting device in the length direction of the lateral guide causes the position of the cutting device to change in the lateral direction of the mower, thereby realizing the adjustment of different cutting positions of the mower in the same path. In addition, the lateral driving assembly drives the cutting device to move along the lateral guide, so that the cutting device moves in the length direction of the lateral guide. By driving the cutting device to move in the lateral direction through the lateral driving assembly, the automatic adjustment of the position of the cutting device is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device are improved.

[0214] The at least two support arms are relatively fixed, and / or the at least two lateral guides are relatively fixed. The support base, the support arms and the lateral guides can form a linkage structure relationship, thereby facilitating the further improvement of the connection stability between the support base, the support arms and the lateral guides and the position stability of the cutting device during the rotation of the support arms.

[0215] The installation structure of the support arm and the transverse guide is connected to each other, the position adjustment device and the cutting device are reduced in the space occupied in the machine body, and the intelligentization and miniaturization of the mower are facilitated.

[0216] In some possible implementations, the at least one support arm is connected with the driving unit; and / or the cutting device is connected with the driving unit; and / or the at least one transverse guide is connected with the driving unit.

[0217] The support arm is connected with the driving unit. The driving unit drives the support arm to rotate up and down, and further drives the cutting device to move up and down, so as to realize the height adjustment of the cutting device. In this way, the support arm is connected with the driving unit, the installation difficulty is low, and the stability of the structure assembly is improved.

[0218] The cutting device is connected with the driving unit. The driving unit is directly connected with the cutting device, without the force transmission of other structures or components, and the driving unit can complete the lifting without a large force acting on the cutting device, so that the operation is convenient.

[0219] The transverse guide is connected with the driving unit. The transverse guide serves as an intermediate connection structure between the support arm and the cutting device, and drives the support arm and the cutting device to move through the movement of the transverse guide, without the force transmission of too many structures and components, so that the stability of the movement state is ensured.

[0220] In some possible implementations, the cutting device includes a cutter head. The cutter head includes blades. The transverse guide includes a first end and a second end in the length direction. The cutting device moves between the first end and the second end. When the cutting device is located at the first end, at least part of the blades is located outside the orthographic projection of the machine body towards the ground.

[0221] When the cutting device is located at the first end, at least part of the blades is located outside the orthographic projection of the machine body towards the ground. The blades can move to the outside of the machine body of the mower, and the grass in the boundary area of the lawn can be cut clean during the work, so that the boundary residual of the lawn in the cutting process is avoided, manual secondary pruning is not needed, and the user experience is improved.

[0222] In some possible implementations, the first end of the transverse guide extends out of the orthographic projection of the machine body towards the ground.

[0223] The first end of the transverse guide extends out of the orthographic projection of the machine body towards the ground. Part of the transverse guide extends out of the machine body of the mower, and when the boundary of the lawn needs to be trimmed, the cutting device moves along the transverse guide to the outside of the machine body of the mower, so that the area of the blades moving to the outside of the mower is increased, and the trimming effect of the boundary of the lawn is further improved.

[0224] In some possible implementations, the cutting device includes a cutter head. The cutter head includes a blade. The transverse guide includes a first end and a second end along a length direction. The cutting device moves between the first end and the second end. The first end and the second end are located within a projection of the machine body on the ground. The first end is close to a side edge of the projection of the machine body on the ground. When the cutting device is located at the first end, a projection of the blade on the ground is located within the projection of the machine body on the ground. A minimum horizontal distance between an outer edge of the blade and the side edge of the projection of the machine body is greater than or equal to 0 mm and less than or equal to 50 mm.

[0225] The minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body is greater than or equal to 0 mm and less than or equal to 50 mm. When the width of the cutting area that cannot be cut is greater than 50 mm, the visual aesthetics is affected, and manual trimming is required, which affects the user experience. The minimum horizontal distance between the outer edge of the blade and the side edge of the projection of the machine body is greater than or equal to 0 mm and less than or equal to 50 mm, which greatly reduces the width of the uncut lawn, eliminates the need for manual trimming, and improves the cutting effect. In addition, the blade is located inside the machine body, and no additional protection structure is required to meet the safety requirements.

[0226] In some possible implementations, the cutting device includes a cutter head. The cutter head includes a blade. The transverse guide includes a first end and a second end along a length direction. The cutting device moves between the first end and the second end. The first end and the second end are located within a projection of the machine body on the ground. The first end is close to a side edge of the projection of the machine body on the ground. When the cutting device is located at the first end, a projection of the blade on the ground is located within the projection of the machine body on the ground. The length of the transverse guide is S, the width of the machine body is W, 0.3W≤S*sinα≤0.7W, and the vertical distance between the end of the transverse guide and the symmetry plane of the machine body is less than or equal to 0.35W.

[0227] S*sinα is the length of the transverse guide along the width of the machine body. When the value of S*sinα is less than 0.3W, the transverse movement range of the cutting device is small, the mowing efficiency is low, and the cutting effect of the lawn boundary is not ideal, resulting in a wide grass left on the lawn boundary, affecting the visual aesthetics, and the user needs to manually process the boundary again, which is poor in user experience. When the value of S*sinα is greater than 0.7W, the transverse guide occupies more space inside the machine body, and more space needs to be reserved inside the machine body for avoiding the cutting device, which increases the volume of the machine body, is not conducive to the miniaturization of the mower, and the transverse guide is too long, which causes the center of gravity of the mower to deviate to one side of the mower, and the stability of the mower is reduced.

[0228] In some possible implementations, the length direction of the transverse guide and the forward direction of the mower form an included angle α. The included angle α is between 85 degrees and 95 degrees.

[0229] When the length of the transverse guide is fixed, and the included angle α is in the range of 85 degrees to 95 degrees, the moving range of the cutting device along the width of the machine body is larger than when the included angle α takes other values, the space inside the machine body can be effectively utilized, the mowing efficiency is improved, and the miniaturization of the machine is ensured.

[0230] In some possible implementation manners, the length direction of the transverse guide and the advancing direction of the mower form an included angle α. The included angle α is 90 degrees.

[0231] When the length of the transverse guide is fixed, and the included angle α is 90 degrees, the moving range of the cutting device along the width of the machine body is the largest, the space inside the machine body can be maximized to achieve the effect of cutting to the edge.

[0232] In some possible implementation manners, the rotating speed of the cutter head in the first state is greater than or equal to the rotating speed of the cutter head in the second state. The first state is a state after the moving action is completed and the cutting device is started, and the second state is a state in which the moving action is performed.

[0233] In some possible implementation manners, the rotating speed of the cutter head in the first state is greater than the rotating speed of the cutter head in the third state. The third state is a state in which the height adjustment action is performed.

[0234] In some possible implementation manners, the second state is a state in which the moving action is performed, and the rotating speed of the cutter head in the second state is 0.

[0235] In some possible implementation manners, the third state is a state in which the height adjustment action is performed, and the rotating speed of the cutter head in the second state is equal to the rotating speed of the cutter head in the third state.

[0236] An eighteenth aspect of the embodiments of the present application provides a mower, including a machine body and a cutting system.

[0237] The machine body includes a first lower edge. The cutting system is arranged on the machine body. The cutting system includes a cutting device and a position adjustment device. The cutting device is connected to the position adjustment device. The position adjustment device is configured to drive the cutting device to move laterally, so that the cutting device moves between a center position of the machine body and an edge cutting position of the machine body. The position adjustment device is configured to adjust the height of the cutting device.

[0238] The cutting device includes a cutter head and a cutter head cover. The cutter head is located in the cutter head cover. The cutter head includes a blade. The cutter head cover has a second lower edge. When the cutting device is located at the edge cutting position, in the vertical direction, the second lower edge is lower than the first lower edge, and the second lower edge is lower than the lower surface of the blade.

[0239] The lawn mower of the embodiment of the present application comprises a position adjusting device and a cutting device. The position adjusting device can adjust the relative position of the cutting device and the machine body. Under the driving action of the position adjusting device, the cutting device can move between the center position and the edge cutting position. When the cutting device is in the edge cutting position, the cutting device can trim the area close to the boundary of the lawn, thereby facilitating the avoidance of leaving a large area of uncut lawn near the boundary of the lawn. At the same time, the cutter head cover of the lawn mower protects the cutter head without the need for additional bottom protection plates. The cutter head cover of the lawn mower does not press down the lawn, thereby facilitating the improvement of the cutting efficiency and the cutting effect.

[0240] In addition, the position adjusting device can adjust the height of the cutting device, so that when the cutting device is in the edge cutting position, in the vertical direction, the second lower edge of the cutter head cover can be lower than the first lower edge of the machine body, and the second lower edge of the cutter head cover can be lower than the lower surface of the blade. The second lower edge of the cutter head cover has a large safety distance from the cutter head. When the operator carries the lawn mower, the palms of the operator's hands can be attached to the machine body, and the fingertips of the fingers can be buckled to the inside of the cutter head cover. Under the protection of the cutter head cover, most of the operator's fingers are located outside the cutter head cover, so that the operator's fingers are not easy to touch the cutter head. At the same time, the second lower edge of the cutter head cover is lower than the cutter head, so that when the operator's fingers bypass the second lower edge of the cutter head cover and buckle to the inside of the cutter head cover, the fingertips of the fingers are also not easy to touch the cutter head.

[0241] In addition, the lawn mower of the embodiment of the present application can meet the carrying safety requirements as long as the orthogonal projection of the cutting system is located within the orthogonal projection of the machine body, so that when the cutting device is in the edge cutting position, the distance between the cutter head and the machine body can be adjusted to be very small, and the outer edge of the cutter head cover can approach the machine body infinitely, thereby greatly reducing the width of the uncut lawn and improving the edge cutting effect.

[0242] Based on the fact that the outer edge of the cutter head cover can approach the machine body infinitely, most hard impurities (such as small stones) cannot enter between the cutter head cover and the machine body, thereby avoiding the scratching or damage of the cutter head cover or the machine body by the hard impurities.

[0243] In addition, the lawn mower of the embodiment of the present application does not need to be provided with a bottom protection plate at the bottom of the cutter head, thereby avoiding the situation that small stones or other impurities are stuck between the bottom protection plate and the cutter head during the mowing process, reducing the probability of the jamming of the machine in the edge cutting state of the lawn mower, and improving the cutting efficiency and the user experience.

[0244] Therefore, the lawn mower of the embodiment of the present application can effectively cut the lawn close to the boundary of the lawn, improve the cutting efficiency and the cutting effect, and at the same time, the position of the cutting device can be adjusted by the position adjusting device, so that the cutting device in the edge cutting position can meet the safety requirements for the use of the lawn mower and will not cause injuries to people or animals.

[0245] In some possible implementation manners, the position adjusting device comprises a transverse driving assembly. The transverse driving assembly comprises a deflection cam. The deflection cam is connected to the cutting device. The deflection cam is configured to drive the cutting device to move transversely. The deflection cam comprises a first limiting portion. The machine body comprises a second limiting portion and a third limiting portion. When the cutting device is in the center position, the first limiting portion is matched with the second limiting portion. When the cutting device is in the edge cutting position, the first limiting portion is matched with the third limiting portion.

[0246] Through the matching of the first limiting portion and the second limiting portion and the matching of the first limiting portion and the third limiting portion, the position accuracy of the cutting device moving transversely to the center position or the edge cutting position can be ensured, and the position moving precision is improved.

[0247] In some possible implementation manners, the machine body comprises a side skirt. When the cutting device is in the edge cutting position of the machine body, the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body in the direction perpendicular to the side skirt is greater than or equal to 10 mm and less than or equal to 50 mm.

[0248] In the edge cutting state, the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body is greater than or equal to 10 mm and less than or equal to 50 mm. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body is greater than 50 mm, the width of the uncut lawn in the cutting area affects the visual aesthetics, and manual re-trimming is required, which affects the user experience. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body is less than 10 mm, the user's fingers are easily mistaken for the blade when the fingers are buckled inward from the lower edge of the side skirt to the machine body when carrying the mower, which can cause injury to the user. When the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body is greater than or equal to 10 mm and less than or equal to 50 mm, the safety performance is met, and the width of the uncut lawn is greatly reduced, so that manual re-trimming is not required, and the edge cutting effect is improved.

[0249] In some possible implementation manners, the machine body comprises a side skirt. When the cutting device is in the center position of the machine body, the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body in the direction perpendicular to the side skirt is D.

[0250] When the cutting device is in the edge cutting position of the machine body, the minimum horizontal distance between the outer edge of the blade and the side skirt of the machine body in the direction perpendicular to the side skirt is d. The value of D is greater than the value of d.

[0251] In the embodiment of the application, the lawn mower has two working positions. For different use scenarios, the cutting device can be adjusted to the center position of the machine body or the edge cutting position of the machine body to meet different lawn mowing needs of the user. BRIEF DESCRIPTION OF DRAWINGS

[0252] In order to more clearly illustrate the technical solutions in the application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0253] Fig. 1 is a schematic view of a partial structure of a mower according to an embodiment of the application;

[0254] Fig. 2 is a schematic view of a partial side structure of a cutting system according to an embodiment of the application;

[0255] Fig. 3 is a schematic view of a partial bottom structure of a cutting system according to an embodiment of the application;

[0256] Fig. 4 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0257] Fig. 5 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0258] Fig. 6 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0259] Fig. 7 is a schematic view of a partial structure of a transverse drive assembly according to an embodiment of the application;

[0260] Fig. 8 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0261] Fig. 9 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0262] Fig. 10 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0263] Fig. 11 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0264] Fig. 12 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0265] Fig. 13 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0266] Fig. 14 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0267] Fig. 15 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0268] Fig. 16 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0269] Fig. 17 is a schematic view of a partial structure of a cutting system according to an embodiment of the application;

[0270] Fig. 18 is a schematic view of a cutting system according to an embodiment of the present application;

[0271] Fig. 19 is a schematic view of a cutting system according to an embodiment of the present application;

[0272] Fig. 20 is a schematic view of a mower according to an embodiment of the present application;

[0273] Fig. 21 is a schematic view of a mower according to an embodiment of the present application.

[0274] Reference Signs: 10, mower; 20, cutting system; 30, body; 31, side skirt; 311, first lower edge; 40, cutting device; 40a, accommodating groove; 41, driver; 42, cutter head; 421, blade; 43, cutter head cover; 43a, second lower edge; 431, flange; 44, sliding connecting piece; 50, position adjusting device; 60, height adjusting assembly; 61, support; 62, support arm; 62a, accommodating portion; 62b, first connecting portion; 62c, second connecting portion; 620, sub support arm; 621, transverse connecting arm; 622, first sub support arm; 623, second sub support arm; 63, cam; 631, helical surface; 64, transverse guide; 641, first end; 642, second end; 70, transverse driving assembly; 71, deflection cam; 711, first limiting portion; 72, second driving component; 73, screw rod; 74, adapter; 741, main body; 742, wing plate; 75, telescopic rod; 80, horizontal shaft; 90, traveling device; X, transverse direction; Y, vertical direction; Z, forward direction. DETAILED DESCRIPTION

[0275] The mower according to embodiments of the present application is a self-moving device that can automatically cut grass. The mower can automatically cut grass without human operation. During operation, the mower can move on the grass along a predetermined moving direction and moving path. During movement, the mower can perform a mowing function to cut the grass, so that the grass is kept at a predetermined height, avoiding the grass being too high or uneven, and ensuring that the grass maintains good appearance and cleanliness.

[0276] The mower is usually placed in a predetermined area to perform grass trimming work. For example, a physical fence can be arranged around the grass. For example, the physical fence can be a wire mesh or a wooden fence, etc. The physical fence is arranged around the grass along the boundary of the grass. The mower can be placed in the physical fence. The mower can trim the grass in the physical fence.

[0277] For another example, the lawn mower can be placed in an open lawn area. The open lawn area refers to a lawn area without a physical fence around the lawn. In order to ensure that the lawn mower does not drive out of the lawn area, the lawn mower can include a control system, and the control system can automatically set the travel route of the lawn mower according to the boundary shape of the lawn, so that the lawn mower always travels in the predetermined lawn area and simultaneously mows the lawn. The lawn mower cannot drive out of the boundary of the lawn.

[0278] Fig. 1 schematically shows a partial structure of a lawn mower. Fig. 2 schematically shows a partial side view structure of a cutting system. Fig. 3 schematically shows a partial bottom view structure of the cutting system.

[0279] Referring to Figs. 1, 2 and 3, the lawn mower 10 includes a cutting system 20. The cutting system 20 includes a cutting device 40. The cutting device 40 is used for mowing grass. The cutting device 40 can further include a driver 41. The driver 41 is connected with a cutting member. The driver 41 is used for driving the cutting member to perform a mowing action to reduce the height of the lawn.

[0280] Exemplarily, the cutting member can be a cutterhead 42. The driver 41 is connected with the cutterhead 42. The driver 41 is used for driving the cutterhead 42 to rotate. The cutterhead 42 in the rotating state can mow grass to reduce the height of the lawn. The rotation axis of the cutterhead 42 is a vertical axis. Alternatively, the rotation axis of the cutterhead 42 has a small included angle with the vertical direction Y. The cutterhead 42 maintains a predetermined distance from the ground, so that the cutterhead 42 can cut the lawn according to the mowing height requirement. The vertical direction Y also serves as a height direction.

[0281] The lawn mower 10 further includes a machine body 30 and a travel device 90. The cutting device 40 can be arranged inside the machine body 30. Exemplarily, along the vertical direction Y, the cutting device 40 can be arranged below the machine body 30. Along the vertical direction Y, the orthogonal projection of the cutting device 40 can be located within the orthogonal projection of the machine body 30. The travel device 90 is connected with the machine body 30. The travel device 90 includes travel wheels or tracks. The travel wheels or tracks can be located outside the machine body 30. Along the lateral direction X of the lawn mower 10, travel wheels or tracks are arranged on both sides of the lawn mower 10. The lateral direction X of the lawn mower 10 is a horizontal direction perpendicular to the forward direction Z of the lawn mower 10. The lateral direction X of the lawn mower 10 is perpendicular to the vertical direction Y. It should be noted that along the lateral direction X of the lawn mower 10, the two sides of the lawn mower 10 refer to the left side and the right side of the lawn mower 10.

[0282] In the related art, the cutter head of the mower is arranged at the central position of the mower. For a lawn with a physical fence arranged at the periphery, when the mower is arranged close to the physical fence, the cutter head cannot cut the part of the lawn between the cutter head and the physical fence, resulting in a large area of the lawn close to the physical fence remaining uncut and needing to be manually trimmed again. For an open lawn, when the mower is arranged close to the boundary of the lawn, the cutter head cannot cut the part of the lawn between the cutter head and the boundary of the lawn, resulting in a large area of the lawn close to the boundary remaining uncut and needing to be manually trimmed again.

[0283] To solve the above problems, one way is that the mower can be provided with a transverse position adjusting device. The cutting device is connected with the transverse position adjusting device. The transverse position adjusting device can adjust the transverse relative position between the cutting device and the body, so that the cutting device can be moved from the central position to the edge cutting position or from the edge cutting position to the central position. When the cutting device is at the edge cutting position, the cutting device can trim the area close to the boundary of the lawn, thereby facilitating avoiding manual trimming again.

[0284] However, due to the limitation of the size of the body, the mower provided with the transverse position adjusting device is difficult to be compatible with the height position adjusting device arranged inside the body, the height position adjusting device being a mechanism for adjusting the height of the cutting device, so that the cutter head can complete the cutting work of lawns at different heights. The transverse position adjusting device and the height position adjusting device are also required to consider the problem of motion interference when being arranged together inside the body of the mower, and therefore a large internal space of the body is required to accommodate the transverse position adjusting device and the height position adjusting device. The mower has the characteristics of small size and light weight, which also makes it difficult to integrate the above two position adjusting devices inside the mower. At present, there is a lack of specific means for the mower to realize both the functions of transverse position adjustment and height position adjustment of the cutter head.

[0285] For the mower with the movable cutting device or the mower with the cutting device arranged at one side of the body, when the cutting device of the mower is at the edge cutting position, the mower needs to be safe for people or animals. For example, when the cutting device is at the edge cutting position, the fingers of the person carrying the mower cannot touch the cutter head. In order to meet the above requirements, the body of the mower is provided with a side guard plate and a bottom guard plate. When the cutting device is at the edge cutting position, part of the cutting device can be located in the space surrounded by the side guard plate and the bottom guard plate. The side guard plate and the bottom guard plate form a protection for the cutting device, so that the fingers of the person cannot easily touch the cutter head, thereby ensuring the safety of the mower. However, during the movement of the mower, the bottom guard plate will trample the lawn, resulting in the cutting device failing to cut the trampled lawn, affecting the cutting efficiency and cutting effect.

[0286] The mower 10 of the embodiment of the present application can realize the function of transverse movement of the cutting device 40, and can also realize the function of vertical movement of the cutting device 40. The mower 10 can make the cutting device 40 trim the part of the lawn close to the boundary of the lawn by adjusting the position of the cutting device 40 in the transverse direction. Meanwhile, the mower 10 can make the cutting device 40 be in the edge-cutting position while meeting the safety requirements for use and not causing injury to people or animals by adjusting the position of the cutting device 40 in the vertical direction. The mower 10 does not need to additionally provide a bottom guard plate, which is conducive to improving the cutting efficiency and the cutting effect.

[0287] FIG. 4 schematically shows the partial structure of the cutting system 20. In FIG. 4, the cutting device 40 in the cutting system 20 is in the center position. FIG. 5 schematically shows the partial structure of the cutting system 20. In FIG. 5, the cutting device 40 in the cutting system 20 is in the edge-cutting position. The mower 10 of the embodiment of the present application is exemplarily described below in combination with FIGS. 1 to 5.

[0288] Referring to FIGS. 1 to 5, the mower 10 of the embodiment of the present application can include a machine body 30. The machine body 30 includes an accommodation space. The machine body 30 can provide protection for the components arranged in the accommodation space. The machine body 30 can include side aprons 31. Along the transverse direction X of the mower 10, the side aprons 31 are arranged on both sides of the mower 10, respectively. The side aprons 31 have first lower edges 311. Along the vertical direction Y, the first lower edges 311 of the side aprons 31 face the ground.

[0289] The mower 10 can include a cutting system 20. The cutting system 20 is arranged in the machine body 30. The machine body 30 provides a mounting basis for the cutting system 20 and carries the cutting system 20. Exemplarily, along the vertical direction Y, the cutting system 20 can be arranged below the machine body 30. The cutting system 20 includes a cutting device 40 and a position adjustment device 50. The cutting device 40 and the position adjustment device 50 are both arranged in the machine body 30. The cutting device 40 is connected to the position adjustment device 50. The position adjustment device 50 is used to drive the cutting device 40 to move transversely to approach or move away from the side aprons 31, and the position adjustment device 50 is used to drive the cutting device 40 to move vertically along the vertical direction Y. The position adjustment device 50 has the functions of driving the cutting device 40 to move transversely and to move vertically.

[0290] The position adjustment device 50 can drive the cutting device 40 to move transversely and then drive the cutting device 40 to move vertically. Alternatively, the position adjustment device 50 can drive the cutting device 40 to move vertically and then drive the cutting device 40 to move transversely. Alternatively, the position adjustment device 50 can simultaneously drive the cutting device 40 to move transversely and to move vertically.

[0291] The position adjusting device 50 is used to drive the cutting device 40 to move laterally to approach or move away from the side skirt 31, so as to move the cutting device 40 between the center position of the machine body 30 and the edge cutting position of the machine body 30. The position adjusting device 50 is used to drive the cutting device 40 to move vertically, so as to approach or move away from the ground, thereby adjusting the height of the cutting device 40.

[0292] When the cutting device 40 is in the center position of the machine body 30, the cutting device 40 is relatively far away from the side skirt 31 of the machine body 30. The distance between the cutting device 40 and the side skirt 31 is relatively large. When the cutting device 40 is in the edge cutting position of the machine body 30, the cutting device 40 is relatively close to the side skirt 31 of the machine body 30. The distance between the cutting device 40 and the side skirt 31 is relatively small.

[0293] In some possible implementation manners, the orthogonal projection of the cutting system 20 is located within the orthogonal projection of the machine body 30 in the vertical direction Y. When the cutting device 40 is in the edge cutting position of the machine body 30, the cutting device 40 does not exceed the side skirt 31 of the machine body 30 in the lateral direction X of the lawn mower 10.

[0294] In some possible implementation manners, in the initial state, the cutting device 40 of the lawn mower 10 is located in the center position of the machine body 30. After the lawn mower 10 is started, the cutting device 40 of the lawn mower 10 can trim most of the lawn, and only the lawn near the boundary cannot be trimmed. Then, the position adjusting device 50 is started to drive the cutting device 40 to move laterally from the center position to the edge cutting position, and the lawn near the boundary is trimmed, so that the trimming of the whole lawn is completed.

[0295] Alternatively, in the initial state, the cutting device 40 of the lawn mower 10 is located in the edge cutting position. After the lawn mower 10 is started, the cutting device 40 of the lawn mower 10 can trim the lawn near the boundary. Then, the position adjusting device 50 is started to drive the cutting device 40 to move laterally from the edge cutting position to the center position, and most of the remaining lawn is trimmed, so that the trimming of the whole lawn is completed.

[0296] In some possible implementation manners, during the movement of the cutting device 40 driven by the position adjusting device 50, the cutting device 40 can be in a stop working state or in a working state.

[0297] In some possible implementation manners, when the position adjusting device 50 needs to drive the cutting device 40 to move laterally from the center position to the edge cutting position, the position adjusting device 50 drives the cutting device 40 to move vertically in advance to lower the height of the cutting device 40. Then, the position adjusting device 50 drives the cutting device 40 to move laterally to the edge cutting position.

[0298] When the position adjusting device 50 needs to drive the cutting device 40 to move laterally from the edge cutting position to the center position, the position adjusting device 50 drives the cutting device 40 to move laterally to the center position in advance. Then, the position adjusting device 50 drives the cutting device 40 to move vertically to increase the height of the cutting device 40.

[0299] In some implementable manners, a limiting structure (not shown in the figures) is arranged on the machine body 30. When the cutting device 40 is located at the edge cutting position, the limiting structure is used to limit the maximum upward stroke of the cutting device 40, so as to avoid the height of the cutting device 40 exceeding the set range when the cutting device 40 is at the edge cutting position.

[0300] In some implementable manners, different areas of the lawn have different requirements for the height of lawn mowing. The position adjusting device 50 can flexibly adjust the height of the cutting device 40 in the manner of driving the cutting device 40 to move vertically along the vertical direction Y, so as to adapt to and meet the differentiated requirements of the height of lawn mowing.

[0301] Referring to FIGS. 1-3, the cutting device 40 of the embodiment of the present application includes a cutter head 42 and a cutter head cover 43. The cutter head 42 is arranged in the cutter head cover 43. The cutter head 42 is located below the cutter head cover 43. Exemplarily, the material of the cutter head cover 43 can be plastic. The material of the cutter head 42 can be metal. The cutter head cover 43 includes a bottom opening for avoiding the cutter head 42. The bottom opening of the cutter head cover 43 is used to avoid the cutter head 42. The size of the bottom opening is greater than the diameter of the cutter head 42. The bottom opening of the cutter head cover 43 can completely avoid the cutter head 42, so that the lower part of the cutter head 42 is not blocked by the cutter head cover 43 along the vertical direction Y. The lawn can also enter the cutter head cover 43 through the bottom opening and be cut by the cutter head 42 in the cutter head cover 43. Therefore, the cutter head cover 43 will not trample the lawn, ensuring that the cutter head 42 can cut the grass smoothly, improving the cutting efficiency and cutting effect.

[0302] In some implementable manners, the cutter head cover 43 has a second lower edge 43a. The second lower edge 43a of the cutter head cover 43 faces the ground along the vertical direction Y. When the cutting device 40 is located at the edge cutting position, the second lower edge 43a of the cutter head cover 43 is lower than the first lower edge 311 and the cutter head 42 along the vertical direction Y. When viewed from the side of the lawn mower 10 along the transverse direction X of the lawn mower 10, the part of the cutter head cover 43 that is not blocked by the side apron 31 can be observed, but the cutter head 42 blocked by the cutter head cover 43 cannot be observed.

[0303] Exemplarily, when the cutting device 40 is located at the side cutting position, the cutting device 40 can be arranged to be inclined to the left side of the mower 10 along the transverse direction X of the mower 10. Along the vertical direction Y, the second lower edge 43a of the cutter housing 43 close to the left side skirt 31 can be lower than the first lower edge 311 of the left side skirt 31.

[0304] In some possible implementations, along the vertical direction Y, the cutter housing 43 can be located outside the machine body 30 as a whole. When viewed from the side of the mower 10, the side skirt 31 does not shield the cutter housing 43. Alternatively, along the vertical direction Y, part of the cutter housing 43 can be located outside the machine body 30, and part of the cutter housing 43 can be located inside the machine body 30. When viewed from the side of the mower 10, the side skirt 31 shields part of the cutter housing 43.

[0305] In some possible implementations, referring to FIGS. 2 and 3, the cutter housing 43 can include two flanges 431. The flanges 431 can be folded towards the ground. The flanges 431 have the second lower edge 43a. The two flanges 431 are arranged to be spaced apart along the transverse direction X of the mower 10. Along the transverse direction X of the mower 10, the flanges 431 correspond to the side skirts 31. The left flange 431 corresponds to the left side skirt 31. The right flange 431 corresponds to the right side skirt 31. When the cutting device 40 moves along the transverse direction X of the mower 10, the flanges 431 of the cutter housing 43 are close to or away from the side skirts 31. The cutter 42 is arranged in the space between the two flanges 431. Along the advancing direction Z of the mower 10, the cutter housing 43 has a grass inlet. The grass on the lawn can enter the cutter housing 43 through the grass inlet, so the cutter housing 43 does not trample the grass on the lawn.

[0306] In some possible implementations, referring to FIGS. 2 and 4, the cutting device 40 further includes a driver 41. The driver 41 is connected to the position adjusting device 50. The cutter housing 43 can be connected to the driver 41. The output shaft of the driver 41 is connected to the cutter 42. The position adjusting device 50 can drive the cutting device 40 to move laterally or vertically as a whole, i.e., the position adjusting device 50 can drive the driver 41, the cutter housing 43 and the cutter 42 to move laterally or vertically synchronously.

[0307] In some examples, the driver 41 can include a housing, a motor and a transmission mechanism. The cutter housing 43 can be connected to the housing. The motor is arranged in the housing. The transmission mechanism includes an output shaft that penetrates the housing. The transmission mechanism is arranged in the housing except for the output shaft. The housing can protect the motor and the transmission mechanism. Exemplarily, the transmission mechanism includes a gear type transmission structure.

[0308] The mower 10 of the embodiment of the present application comprises a position adjusting device 50 and a cutting device 40. The position adjusting device 50 can adjust the relative position of the cutting device 40 and the machine body 30. Under the driving action of the position adjusting device 50, the cutting device 40 can move between the center position and the edge cutting position. When the cutting device 40 is in the edge cutting position, the cutting device 40 can trim the area close to the lawn boundary, thereby facilitating the avoidance of leaving a large area of uncut lawn at the lawn boundary. At the same time, the mower 10 protects the cutterhead 42 by the cutterhead cover 43, and does not need to additionally set a bottom protection plate. The cutterhead cover 43 of the mower 10 does not press down the lawn, and is conducive to improving the cutting efficiency and cutting effect.

[0309] In addition, the position adjusting device 50 can adjust the height of the cutting device 40, so that when the cutting device 40 is in the edge cutting position, the second lower edge 43a of the cutterhead cover 43 can be lower than the first lower edge 311 of the side apron 31 in the vertical direction Y, and the second lower edge 43a of the cutterhead cover 43 can be lower than the cutterhead 42. There is a large safety distance between the second lower edge 43a of the cutterhead cover 43 and the cutterhead 42. When the mower 10 is carried, the palm of the operator's hand can be attached to the side apron 31, and the fingertips of the fingers can be buckled to the inside of the cutterhead cover 43. Under the protection of the cutterhead cover 43, most of the operator's fingers are located outside the cutterhead cover 43, so that the operator's fingers are not easy to touch the cutterhead 42. At the same time, the second lower edge 43a of the cutterhead cover 43 is lower than the cutterhead 42, so that when the operator's fingers bypass the second lower edge 43a of the cutterhead cover 43 and buckle to the inside of the cutterhead cover 43, the fingertips of the fingers are also not easy to touch the cutterhead 42.

[0310] In addition, the mower 10 of the embodiment of the present application can meet the carrying safety requirements as long as the orthogonal projection of the cutting system 20 is located in the orthogonal projection of the machine body 30, so that when the cutting device 40 is in the edge cutting position, the distance between the cutterhead 42 and the side apron 31 can be adjusted to be very small, and the outer edge of the cutterhead cover 43 can approach the side apron 31 infinitely, greatly reducing the width of the uncut lawn and improving the edge cutting effect.

[0311] Based on the fact that the outer edge of the cutterhead cover 43 can approach the side apron 31 infinitely, most of the hard impurities (such as small stones) cannot enter between the cutterhead cover 43 and the side apron 31, avoiding the hard impurities from scratching or damaging the cutterhead cover 43 or the side apron 31.

[0312] In addition, the mower 10 of the embodiment of the present application does not need to set a bottom protection plate at the bottom of the cutterhead 42, avoiding the situation that small stones or other impurities are stuck between the bottom protection plate and the cutterhead 42 during the mowing process, reducing the probability of the machine jamming in the edge cutting state of the mower 10, and improving the cutting efficiency and user experience.

[0313] Therefore, the lawnmower 10 of the embodiments of the present application can effectively cut the lawn close to the boundary of the lawn, improve the cutting efficiency and cutting effect, and adjust the position of the cutting device 40 through the position adjusting device 50, so that the cutting device 40 at the edge cutting position can meet the safety requirements of the lawnmower 10 and will not cause injury to people or animals.

[0314] In some implementable manners, referring to FIG. 1, along the vertical direction Y, the vertical distance L2 between the first lower edge 311 of the side apron 31 and the second lower edge 43a of the cutter cover 43 is greater than or equal to 1 millimeter (mm).

[0315] In some implementable manners, along the vertical direction Y, the vertical distance L2 between the first lower edge 311 of the side apron 31 and the second lower edge 43a of the cutter cover 43 is greater than or equal to 5 millimeters. In some examples, the vertical distance L2 between the first lower edge 311 of the side apron 31 and the second lower edge 43a of the cutter cover 43 is 5 millimeters along the vertical direction Y.

[0316] In some implementable manners, along the vertical direction Y, the vertical distance L2 between the first lower edge 311 of the side apron 31 and the second lower edge 43a of the cutter cover 43 is greater than or equal to 10 millimeters. The greater the vertical distance L2 between the first lower edge 311 of the side apron 31 and the second lower edge 43a of the cutter cover 43, the higher the protection performance of the side apron 31 and the cutter cover 43, so that the fingers of the operator are less likely to contact the cutter 42.

[0317] In some implementable manners, referring to FIGS. 2 and 3, the cutter 42 includes a blade 421. Along the vertical direction Y, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the cutter cover 43 is greater than or equal to 3 millimeters. The maximum vertical distance L3 between the lower surface of the blade 421 and the second lower edge 43a of the cutter cover 43 is less than or equal to 15 millimeters. For example, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the cutter cover 43 is 10 millimeters. The greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter cover 43, the greater the distance between the fingers of the operator inside the cutter cover 43 and the cutter 42, so that the fingers of the operator are less likely to contact the cutter 42.

[0318] In some implementable manners, along the vertical direction Y, the vertical distance between the first lower edge 311 of the side apron 31 and the ground is in the range of 40 millimeters to 60 millimeters. For example, the vertical distance between the first lower edge 311 of the side apron 31 and the ground is 55 millimeters.

[0319] In some possible implementation manners, the vertical distance between the cutterhead 42 and the ground ranges from 30 mm to 40 mm in the vertical direction Y.

[0320] Referring to FIGS. 4 and 5, the position adjusting device 50 of the embodiment includes a height adjusting assembly 60. The height adjusting assembly 60 is arranged on the fuselage 30. The cutting device 40 is connected to the height adjusting assembly 60. The height adjusting assembly 60 is configured to drive the cutting device 40 to move vertically in the vertical direction Y, so as to adjust the height of the cutting device 40.

[0321] The height adjusting assembly 60 can include a support base 61. The support base 61 can be arranged on the fuselage 30. The support base 61 can be configured to support the cutting system 20. For example, the support base 61 can be integrally formed with the fuselage 30. Alternatively, the support base 61 can be detachably connected to the fuselage 30.

[0322] The height adjusting assembly 60 can further include a support arm 62. The support arm 62 can be rotatably connected to the fuselage 30. For example, the support arm 62 can be connected to the fuselage 30 through the support base 61. The support arm 62 can be rotatably connected to the support base 61. In this way, the support arm 62 is connected to the fuselage 30 through the support base 61, which facilitates the connection between the support arm 62 and the fuselage 30. For example, the support arm 62 can be rotatably connected to the support base 61. For example, the support arm 62 can be rotatably connected to the support base 61 through a horizontal shaft 80. The height adjusting assembly 60 can drive the support arm 62 to swing about the horizontal shaft 80. The horizontal shaft 80 is the fulcrum of the support arm 62. In this way, the support arm 62 and the support base 61 are connected through the horizontal shaft 80, which facilitates the structural design of the rotary pair between the support arm 62 and the support base 61, and facilitates the disassembly and assembly, thereby reducing the machining cost and the maintenance cost.

[0323] For example, the horizontal shaft 80 is arranged on the support arm 62. A shaft hole is correspondingly arranged on the support base 61. The horizontal shaft 80 of the support arm 62 is inserted into the shaft hole of the support base 61. Alternatively, a shaft hole is arranged on the support arm 62. The horizontal shaft 80 is correspondingly arranged on the support base 61. The shaft hole of the support arm 62 is sleeved on the horizontal shaft 80 of the support base 61. Alternatively, shaft holes are arranged on the support arm 62 and the support base 61. An additional horizontal shaft 80 is inserted into the shaft holes arranged on the support arm 62 and the support base 61.

[0324] The cutting device 40 is connected to the support arm 62. The support arm 62 comprises a first connecting portion 62b. The first connecting portion 62b of the support arm 62 is spaced apart from the horizontal shaft 80. The cutting device 40 is connected to the first connecting portion 62b of the support arm 62. The cutting device 40 is spaced apart from the horizontal shaft 80. The cutting device 40 can rotate relative to the horizontal shaft 80. Since the cutting device 40 is far away from the horizontal shaft 80, when the support arm 62 rotates at a small angle relative to the horizontal shaft 80, the support arm 62 can drive the cutting device 40 to move a relatively large distance in the vertical direction Y, which is beneficial to improve the vertical position adjustment efficiency of the cutting device 40.

[0325] Exemplarily, the cutting device 40 is detachably connected to the first connecting portion 62b of the support arm 62.

[0326] Exemplarily, the driver 41 of the cutting device 40 is connected to the first connecting portion 62b of the support arm 62.

[0327] Exemplarily, along the vertical direction Y, the cutter cover 43 and the cutter 42 of the cutting device 40 can be arranged below the support arm 62. Exemplarily, along the vertical direction Y, the cutter cover 43 of the cutting device 40 is spaced apart from the support arm 62, so as to avoid the problem of position interference between the support arm 62 and the cutter cover 43 when the support arm 62 swings relative to the support base 61.

[0328] The height adjustment assembly 60 further comprises a driving unit. The driving unit is configured to drive the support arm 62 to rotate relative to the support base 61, so as to adjust the height of the cutting device 40 relative to the ground.

[0329] In some examples, the cutting device 40 is connected to the driving unit. The driving unit is directly connected to the cutting device 40 without the need for other structures or components to transmit force. The driving unit can exert a force on the cutting device 40 to complete the lifting without the need for a large force, which is convenient to operate.

[0330] In some examples, the driving unit is connected to the support arm 62. The driving unit drives the support arm 62 to rotate up and down to further drive the cutting device 40 to move up and down, so as to adjust the height of the cutting device 40 relative to the ground. The support arm 62 and the driving unit are connected in this way, which is low in installation difficulty and improves the stability of the structure assembly.

[0331] The driving unit can exert a force on the support arm 62, so that the support arm 62 can rotate about the horizontal shaft 80 under the action of the rotation torque, so that the support arm 62 can drive the cutting device 40 to rise or fall, so as to adjust the height of the cutting device 40 relative to the ground.

[0332] Exemplarily, the support arm 62 comprises a second connecting portion 62c. The driving unit is connected with the second connecting portion 62c of the support arm 62. The second connecting portion 62c of the support arm 62 is a region bearing the action force. The driving unit can transmit the action force to the support arm 62 through the second connecting portion 62c. The second connecting portion 62c of the support arm 62 has a spacing with the horizontal shaft 80. Exemplarily, the second connecting portion 62c is located on the side of the horizontal shaft 80 facing the first connecting portion 62b, so that the overall structure formed by the driving unit and the support arm 62 is relatively compact and occupies a small space.

[0333] Exemplarily, the first connecting portion 62b of the support arm 62 is located on the side of the second connecting portion 62c away from the horizontal shaft 80. The driver 41 of the cutting device 40 is located on the side of the second connecting portion 62c of the support arm 62 away from the horizontal shaft 80.

[0334] In some realizable modes, the cutting device 40 can be rotatably connected to the height adjustment assembly 60. When the height adjustment assembly 60 drives the cutting device 40 to move vertically, the cutting device 40 also rotates relative to the height adjustment assembly 60, so that the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes the height and does not swing relative to the horizontal plane. In some examples, referring to FIGS. 4 and 5, the cutting device 40 can be rotatably connected to the support arm 62. Exemplarily, the cutting device 40 can be rotatably connected to the first connecting portion 62b of the support arm 62. When the driving unit drives the support arm 62 to rotate relative to the horizontal shaft 80, the cutting device 40 also rotates relative to the support arm 62, so that when the support arm 62 drives the cutting device 40 to move vertically, the cutting device 40 itself does not swing relative to the vertical direction Y, ensuring that the cutter head 42 only changes the height and does not swing relative to the horizontal plane.

[0335] In some realizable modes, referring to FIGS. 4 and 5, the support arm 62 comprises a receiving portion 62a. The receiving portion 62a is located on the side of the second connecting portion 62c of the support arm 62 away from the horizontal shaft 80. In the vertical direction Y, the receiving portion 62a penetrates through the support arm 62. The driver 41 of the cutting device 40 is connected to the support arm 62. The driver 41 is arranged in the receiving portion 62a of the support arm 62, that is, the support arm 62 is arranged outside the driver 41, so that the driver 41 can reuse the receiving portion 62a of the support arm 62, thereby effectively improving the structural compactness of the cutting system 20, reducing the overall volume, and occupying a small space. In the vertical direction Y, the cutter head cover 43 of the cutting device 40 is arranged below the receiving portion 62a.

[0336] In some examples, referring to FIGS. 4 and 5, the support arm 62 includes a transverse connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The second connecting portion 62c is arranged on the transverse connecting arm 621. The transverse connecting arm 621 has a spacing with the support base 61. The first sub-support arm 622 is arranged on one side of the transverse connecting arm 621 facing the support base 61, and the second sub-support arm 623 is arranged on the other side of the transverse connecting arm 621 away from the support base 61. The first sub-support arm 622 and the second sub-support arm 623 are arranged on both sides of the transverse connecting arm 621 along the advancing direction Z of the mower 10. The advancing direction Z of the mower 10 is perpendicular to the transverse direction X of the mower 10. The first sub-support arm 622 is rotatably connected to the support base 61 through the horizontal shaft 80. The second sub-support arm 623 is arranged with the first connecting portion 62b.

[0337] The driver 41 of the cutting device 40 can be connected to the second sub-support arm 623. For example, the driver 41 of the cutting device 40 is rotatably connected to the second sub-support arm 623. For example, the second sub-support arm 623 is arranged with the first connecting portion 62b away from the end of the transverse connecting arm 621.

[0338] For example, the transverse connecting arm 621 has a strip-shaped structure. The length direction of the transverse connecting arm 621 is the same as the transverse direction X of the mower 10. The width direction of the transverse connecting arm 621 is the same as the advancing direction Z of the mower 10. The first sub-support arm 622 and the second sub-support arm 623 are arranged on both sides of the transverse connecting arm 621 along the width direction of the transverse connecting arm 621.

[0339] The driver 41 of the cutting device 40 and the support base 61 are respectively located on both sides of the transverse connecting arm 621. By applying a torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support base 61, and at the same time, the second sub-support arm 623 drives the driver 41 to move vertically. The transverse connecting arm 621 as a force structure is located between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improve the overall compactness of the support arm 62 and occupy less space.

[0340] In some examples, in each support arm 62, the number of first sub-support arms 622 is two. The two first sub-support arms 622 are arranged in a direction perpendicular to the vertical direction Y. The direction perpendicular to the vertical direction Y can be the same as the transverse direction X of the mower 10. The two first sub-support arms 622 are arranged in the transverse direction X of the mower 10. The two first sub-support arms 622 are rotatably connected to the support base 61. Part of the driving unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, which is beneficial to improve the overall compactness of the cutting system 20 and reduce the overall volume and occupy less space.

[0341] In some examples, the number of the second sub-support arms 623 in each support arm 62 is two. The two second sub-support arms 623 are spaced apart along a direction perpendicular to the vertical direction Y. The direction perpendicular to the vertical direction Y can be the same as the lateral direction X of the mower 10. The two second sub-support arms 623 are spaced apart along the lateral direction X of the mower 10.

[0342] A receiving portion 62a is formed between the two second sub-support arms 623. The driver 41 of the cutting device 40 is arranged between the two second sub-support arms 623 to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improve the compactness of the overall structure of the cutting system 20 and reduce the overall volume and space occupation. The driver 41 of the cutting device 40 can be rotatably connected to the two second sub-support arms 623, which is beneficial to improve the connection stability between the cutting device 40 and the support arm 62 and the positional stability during rotation.

[0343] The two second sub-support arms 623 are spaced apart along the lateral direction X of the mower 10. The position adjustment device 50 can drive the driver 41 of the cutting device 40 to move laterally between the two second sub-support arms 623.

[0344] In some examples, one lateral guide 64 can be rotatably connected to the two second sub-support arms 623.

[0345] In some examples, the number of the support bases 61 is one. The two first sub-support arms 622 are rotatably connected to the same support base 61.

[0346] In some examples, referring to FIGS. 4 and 5, the number of the support bases 61 is two. In each support arm 62, the number of the first sub-support arms 622 is two. The two support bases 61 are spaced apart along the length direction of the lateral guide 64. The two first sub-support arms 622 are spaced apart along the length direction of the lateral guide 64. The length direction of the lateral guide 64 can be perpendicular to the vertical direction Y.

[0347] The length direction of the lateral guide 64 forms an angle a with the advancing direction Z of the mower 10. The angle a is greater than 0 degrees and less than 180 degrees. For example, when the angle between the length direction of the lateral guide 64 and the advancing direction Z of the mower 10 is 90 degrees, the length direction of the lateral guide 64 can be the same as the lateral direction X of the mower 10.

[0348] Two first sub-support arms 622 are arranged on one side of the transverse connecting arm 621, and two second sub-support arms 623 are arranged on the other side of the transverse connecting arm 621. The two supports 61 and the two first sub-support arms 622 are arranged at intervals along the transverse direction X of the mower 10. The two first sub-support arms 622 are respectively rotatably connected to the two supports 61. A part of the drive unit is located between the two supports 61, so as to effectively utilize the space between the two supports 61, and facilitate to improve the compactness of the overall structure of the cutting system 20, and reduce the overall volume and the occupied space.

[0349] Exemplarily, along the length direction of the transverse connecting arm 621, one second sub-support arm 623 is arranged at each end of the transverse connecting arm 621.

[0350] In some examples, referring to FIGS. 4 and 5, the middle region of the transverse connecting arm 621 is provided with a second connecting portion 62c. The drive unit is connected to the second connecting portion 62c. The drive unit can exert a force on the transverse connecting arm 621 to drive the support arm 62 to swing up and down as a whole. Exemplarily, the two first sub-support arms 622 are symmetrically arranged relative to the second connecting portion 62c, which facilitates to improve the force balance of the support arm 62. The two second sub-support arms 623 are symmetrically arranged relative to the second connecting portion 62c, which facilitates to improve the force balance of the support arm 62.

[0351] In some realizable modes, the height adjustment assembly 60 can include one support arm 62. The drive unit drives the support arm 62 to swing up and down relative to the horizontal shaft 80, so as to drive the cutting device 40 to move vertically, to adjust the height of the cutting device 40, and thus to adjust the height of the cutter head 42 from the ground.

[0352] In some realizable modes, referring to FIGS. 4 and 5, the height adjustment assembly 60 can include two support arms 62. The two support arms 62 are arranged at intervals along the vertical direction Y. The two support arms 62 are respectively rotatably connected to the support 61 through the horizontal shaft 80. The two support arms 62 are respectively rotatably connected to the drive 41 of the cutting device 40. Therefore, a four-bar linkage structure can be formed between the support 61, the two support arms 62 and the drive 41, so as to facilitate to further improve the connection stability between the cutting device 40 and the support arm 62, and the position stability of the cutting device 40 during the rotation relative to the support arm 62.

[0353] Along the vertical direction Y, each of the two support arms 62 has a first interval relative to the two rotation axes of the support 61. Along the vertical direction Y, each of the two support arms 62 has a second interval relative to the two rotation axes of the drive 41 of the cutting device 40. The first interval is equal to the second interval.

[0354] As shown in Figures 2 and 4, the two rotation axes of the two support arms 62 relative to the support 61 are located in the same first vertical plane. The two support arms 62 are located in the same second vertical plane relative to the rotation axis of the cutting device 40. The lines connecting the two rotation axes of the two support arms 62 relative to the support 61 and the two rotation axes of the two support arms 62 relative to the cutting device 40 can form a parallelogram relationship. The first vertical plane and the second vertical plane are parallel to each other. When the two support arms 62 drive the cutting device 40 to move vertically, the horizontal vertical distance between the first vertical plane and the second vertical plane decreases or increases.

[0355] In some examples, the two support arms 62 may have the same structural shape and size, which helps reduce processing costs.

[0356] In some examples, one of the two support arms 62 is connected to a drive unit. The two support arms 62 are connected to the support 61 and the cutting device 40, respectively. Therefore, when the drive unit applies a force to one support arm 62, both support arms 62 can simultaneously swing up and down relative to the support 61 and simultaneously rotate relative to the driver 41 of the cutting device 40. For example, the upper support arm 62 of the two support arms 62 is connected to the drive unit.

[0357] In some embodiments, as shown in Figures 4 and 5 , the drive unit includes a first drive component (not shown) and a cam 63. The cam 63 is connected to the output shaft of the first drive component. The first drive component is used to drive the cam 63 to rotate. The rotation axis of the cam 63 is a vertical axis.

[0358] The cam 63 has a helical surface 631. The helical surface 631 extends helically about the rotation axis. Along the vertical direction Y, the second connecting portion 62c of the support arm 62 is disposed above the helical surface 631 of the cam 63. The second connecting portion 62c of the support arm 62 abuts against the helical surface 631 of the cam 63. When the first driving component drives the cam 63 to rotate forward or reverse, the second connecting portion 62c of the support arm 62 moves relative to the helical surface 631 of the cam 63, causing the support arm 62 as a whole to swing relative to the support 61, thereby adjusting the height of the cutting device 40.

[0359] The spiral surface 631 of the cam 63 is a continuous surface, which is beneficial to improving the movement stability of the support arm 62 during the swinging process relative to the support 61 and reducing the possibility of impact and setback between the support arm 62 and the cam 63.

[0360] Exemplarily, the number of the support arms 62 is two. The two support arms 62 are spaced apart along the vertical direction Y and are relatively fixed. The upper support arm 62 abuts against the helical surface 631 of the cam 63. In the vertical direction Y, the second connecting portion 62c of the upper support arm 62 is arranged above the helical surface 631 of the cam 63, and at least part of the cam 63 is arranged in the space between the first sub-support arms 622 of the two support arms 62, so as to reduce the overall volume and occupy less space.

[0361] Exemplarily, the second connecting portion 62c of the support arm 62 comprises a spherical portion. The outer surface of the spherical portion is a spherical surface. The spherical surface of the second connecting portion 62c abuts against the helical surface 631 of the cam 63, which is conducive to reducing the frictional resistance between the second connecting portion 62c and the helical surface 631.

[0362] Exemplarily, when the first driving component drives the cam 63 to rotate forward, the cam 63 pushes the support arm 62 to swing upward relative to the support base 61, so as to drive the cutting device 40 to move upward, increase the height of the cutting device 40, and increase the distance between the cutter head 42 and the ground. When the first driving component drives the cam 63 to rotate reversely, the cam 63 releases the support arm 62. The support arm 62 swings downward relative to the support base 61, so as to drive the cutting device 40 to move downward, reduce the height of the cutting device 40, and reduce the distance between the cutter head 42 and the ground.

[0363] Exemplarily, when the first driving component drives the cam 63 to rotate reversely, under the action of the gravity of the cutting device 40, the cutting device 40 can drive the support arm 62 to swing downward relative to the support base 61, and the second connecting portion 62c of the support arm 62 keeps in contact with the helical surface 631 of the cam 63.

[0364] In some examples, referring to FIG. 4 or FIG. 5, at least part of the cam 63 is arranged in the space between the first sub-support arms 622 of the two support arms 62. The cam 63 can utilize the space between the two first sub-support arms 622, so as to improve the structural compactness of the height adjustment assembly 60 as a whole and reduce the volume of the height adjustment assembly 60 as a whole and occupy less space.

[0365] In some examples, the first driving component comprises a motor. The output shaft of the motor is connected with the cam 63.

[0366] In some implementable manners, the first driving component can be arranged on the fuselage 30, so that the fuselage 30 can carry the driving unit. Exemplarily, the first driving component is detachably connected with the fuselage 30.

[0367] Referring to FIGS. 2, 4 and 5, the height adjustment assembly 60 further includes a lateral guide 64. The height adjustment assembly 60 is configured to drive the lateral guide 64 to move vertically in the vertical direction Y to adjust the height of the lateral guide 64, and thus the height of the cutting device 40. The cutting device 40 is slidably connected to the lateral guide 64. When the cutting device 40 is subjected to a force in the lateral direction X of the mower 10, the cutting device 40 can move laterally on the lateral guide 64 to move the cutting device 40 between the center position and the side cutting position.

[0368] In some implementations, the drive 41 of the cutting device 40 is slidably connected to the lateral guide 64. In some examples, the housing of the drive 41 is slidably connected to the lateral guide 64.

[0369] In some examples, the lateral guide 64 can be a circular shaft. The lateral guide 64 is rotatably connected to the support arm 62, and no additional circular rotating assembly is needed, which reduces the assembly difficulty and cost.

[0370] In some examples, the end of the lateral guide 64 is connected to the end of the support arm 62.

[0371] The cutting device 40 can include a shaft hole. The lateral guide 64 is arranged through the shaft hole of the cutting device 40. The lateral guide 64 passes through the cutting device 40, which facilitates to improve the connection stability and reliability between the lateral guide 64 and the cutting device 40, and effectively avoids the cutting device 40 from falling off or separating from the lateral guide 64. The axial direction of the lateral guide 64 is the same as the lateral direction X of the mower 10. In an example, a bushing (not shown in the figures) is arranged in the shaft hole of the cutting device 40. The lateral guide 64 is arranged through the bushing. The bushing can isolate the cutting device 40 from the lateral guide 64, which facilitates to avoid the problem of the cutting device 40 being abraded by directly reciprocating on the lateral guide 64.

[0372] In an example, the material of the bushing can be metal. The material of the lateral guide 64 can be metal. The drive 41 of the cutting device 40 includes a housing. The material of the housing can be plastic.

[0373] In some examples, referring to FIGS. 2, 4 and 5, the cutting device 40 further includes a sliding connector 44. The cutting device 40 is slidably connected to the lateral guide 64 through the sliding connector 44. The sliding connector 44 is provided with a shaft hole. The sliding connector 44 can be connected to the drive 41.

[0374] In some examples, the height adjustment assembly 60 comprises a support arm 62. The transverse guide 64 is rotatably connected to the support arm 62. The rotation axis of the transverse guide 64 relative to the support arm 62 is a horizontal axis. The cutting device 40 is rotatably connected to the support arm 62 through the transverse guide 64. The cutting device 40 can slide transversely on the transverse guide 64, and the cutting device 40 and the transverse guide 64 can rotate relative to the support arm 62 about the horizontal axis. The height adjustment assembly 60 can drive the transverse guide 64 to move vertically in the vertical direction Y, so as to drive the cutting device 40 to move vertically through the transverse guide 64. During the vertical movement of the cutting device 40, the cutting device 40 and the transverse guide 64 are synchronously rotated relative to the support arm 62, so that the cutting device 40 itself does not swing relative to the vertical direction Y, and it is ensured that the cutter head 42 only changes the height and does not swing relative to the horizontal plane.

[0375] Exemplarily, the support arm 62 comprises a first connecting portion 62b. The first connecting portion 62b of the support arm 62 has a spacing from the horizontal shaft 80. The transverse guide 64 is connected to the first connecting portion 62b of the support arm 62. The transverse guide 64 is rotatably connected to the first connecting portion.

[0376] In some examples, the support arm 62 comprises a second sub-support arm 623. The driver 41 is slidably connected to the second sub-support arm 623, and the driver 41 is rotatably connected to the second sub-support arm 623. The driver 41 and the second sub-support arm 623 are movably connected in such a manner that the overall structure of the driver 41 and the support arm 62 is relatively compact and occupies a small space.

[0377] In some examples, the support arm 62 comprises a second sub-support arm 623. The transverse guide 64 is rotatably connected to the second sub-support arm 623. The driver 41 is slidably connected to the transverse guide 64.

[0378] The driver 41 and the second sub-support arm 623 are connected through the transverse guide 64 in such a manner that the design difficulty of the connection structure between the driver 41 and the second sub-support arm 623 and the disassembly difficulty between the driver 41 and the second sub-support arm 623 are reduced, and the processing cost and the maintenance cost are reduced.

[0379] In some examples, the support arm 62 comprises a receiving portion 62a. The transverse guide 64 is arranged corresponding to the receiving portion 62a of the support arm 62. The transverse guide 64 and the support arm 62 form the receiving portion 62a therebetween. The transverse guide 64 and the support arm 62 are arranged around the receiving portion 62a together. The driver 41 of the cutting device 40 can pass through the receiving portion 62a of the support arm 62. The driver 41 of the cutting device 40 is slidably connected to the transverse guide 64.

[0380] Exemplarily, the support arm 62 includes two second sub-support arms 623. The two second sub-support arms 623 are spaced apart along the sliding direction of the cutting device 40, thereby forming a receiving portion 62a between the two second sub-support arms 623. The sliding direction of the cutting device 40 is the same as the length direction of the transverse guide 64. The sliding direction of the cutting device 40 is the same as the transverse direction X of the lawn mower 10. The transverse guide 64 is rotatably connected to the two second sub-support arms 623. The two ends of the transverse guide 64 are rotatably connected to the two second sub-support arms 623 respectively. The two second sub-support arms 623, the transverse connecting arm 621 and the transverse guide 64 are collectively arranged around the receiving portion 62a, so that the two second sub-support arms 623, the transverse connecting arm 621 and the transverse guide 64 form a "mouth"-shaped structure.

[0381] Illustratively, the second sub-support arm 623 has a first connecting portion 62b at its end away from the transverse connecting arm 621. The transverse guide 64 is rotatably connected to the first connecting portion 62b. Illustratively, when the cutting device 40 moves laterally relative to the transverse guide 64, the two second sub-support arms 623 can limit the cutting device 40.

[0382] Illustratively, the first connecting portion 62b includes a connecting hole. The end of the second sub-support arm 623, distal from the transverse connecting arm 621, also has a connecting hole. A transverse guide member 64 is disposed through the connecting hole and is rotatably connected to the second sub-support arm 623. Illustratively, a bearing may be disposed within the connecting hole of the second sub-support arm 623. The transverse guide member 64 is rotatably connected to the second sub-support arm 623 via the bearing.

[0383] Illustratively, the position adjustment device 50 can only drive the cutting device 40 to move laterally toward one side of the lawn mower 10. For example, the position adjustment device 50 can only drive the cutting device 40 to move laterally toward the right side of the lawn mower 10. Alternatively, the position adjustment device 50 can only drive the cutting device 40 to move laterally toward the left side of the lawn mower 10. When the cutting device 40 contacts one of the second sub-support arms 623, the cutting device 40 slides to its limit position, i.e., to the side-cutting position. When the cutting device 40 contacts the other second sub-support arm 623, the cutting device 40 slides to its limit position, i.e., to the center position.

[0384] Alternatively, the position adjustment device 50 can drive the cutting device 40 to move laterally to either side of the mower 10. For example, the position adjustment device 50 can drive the cutting device 40 to move laterally to the left side or the right side of the mower 10. When the cutting device 40 is located at the middle region of the lateral guide 64, the cutting device 40 is in the center position. When the cutting device 40 moves laterally and comes into contact with either of the second sub-support arms 623, the cutting device 40 slides to the limit position, i.e., the cutting device 40 slides to the edge cutting position.

[0385] In some possible implementations, referring to FIGS. 2, 4 and 5, the height adjustment assembly 60 can include the support arms 62 and the lateral guides 64. The number of the support arms 62 is two. The two support arms 62 are spaced apart along the vertical direction Y. The number of the lateral guides 64 is two. The two lateral guides 64 are spaced apart along the vertical direction Y. The two lateral guides 64 are respectively rotatably connected to the two support arms 62. The two lateral guides 64 are respectively slidably connected to the cutting device 40. The cutting device 40 is rotatably connected to the support arms 62 through the lateral guides 64. Therefore, a four-bar linkage structure relationship can be formed between the support base 61, the two support arms 62, the two lateral guides 64 and the cutting device 40, thereby facilitating further improvement of the connection stability between the support base 61, the support arms 62, the lateral guides 64 and the cutting device 40 and the position stability of the cutting device 40 during rotation relative to the support arms 62. The two lateral guides 64 are respectively connected to the cutting device 40, and the relative fixation of the two lateral guides 64 is achieved through the cutting device 40, thereby eliminating the need for additional fixtures for connecting the two lateral guides 64 or the two support arms 62 and saving the cost of parts. Meanwhile, based on the four-bar linkage structure, the angle between the cutter head 42 and the ground during the height adjustment of the cutting device 40 is ensured to be consistent.

[0386] In some examples, the cutting device 40 further includes a sliding connector 44. The cutting device 40 is slidably connected to the lateral guides 64 through the sliding connector 44, and the sliding connector 44 is rotatably connected to the support arms 62 through the lateral guides 64. A four-bar linkage structure relationship can be formed between the support base 61, the two support arms 62, the two lateral guides 64 and the sliding connector 44. Exemplarily, the sliding connector 44 is connected to the driver 41. The sliding connector 44 is slidably connected to the lateral guides 64. The cutting device 40 is slidably connected to the lateral guides 64 through the sliding connector 44, which facilitates reduction of the connection structure complexity between the cutting device 40 and the lateral guides 64 and ensures the smoothness of the sliding process of the cutting device 40 relative to the lateral guides 64.

[0387] In some examples, along the vertical direction Y, each of the two support arms 62 has a first spacing between the two rotation axes of the support base 61. Along the vertical direction Y, each of the two lateral guides 64 has a second spacing between the two rotation axes of the cutting device 40. The first spacing is equal to the second spacing.

[0388] Each of the two support arms 62 is located in a same first vertical plane relative to the two rotation axes of the support base 61. Each of the two lateral guides 64 is located in a same second vertical plane relative to the rotation axes of the cutting device 40. The connecting lines between the two rotation axes of the support base 61 relative to each of the two support arms 62 and the two rotation axes of the cutting device 40 relative to each of the two lateral guides 64 form a parallelogram relationship. The first vertical plane is parallel to the second vertical plane. During the swinging of the two support arms 62 to drive the vertical movement of the cutting device 40, the horizontal and vertical distance between the first vertical plane and the second vertical plane changes.

[0389] In some examples, the lateral guide 64 can be a circular shaft. The two ends of the lateral guide 64 are rotatably connected to the support arm 62, respectively. The axes of the two lateral guides 64 are the rotation axes of the cutting device 40 relative to each of the two lateral guides 64, respectively. The axes of the two lateral guides 64 are parallel to each other. The axes of the two lateral guides 64 are located in the same second vertical plane.

[0390] In some implementable manners, the two lateral guides 64 are connected to each other. The two lateral guides 64 are connected by a connecting member. The support base 61, the two support arms 62, the two lateral guides 64, and the connecting member can form a four-bar linkage structure relationship, thereby facilitating to further improve the connection stability between the support base 61, the support arms 62, the lateral guides 64, and the connecting member and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arms 62. Exemplarily, the cutting device 40 can be connected to any one of the two lateral guides 64. Exemplarily, the connecting member has two shaft holes. The two lateral guides 64 are respectively arranged in the two shaft holes of the connecting member, so that the two lateral guides 64 are connected to each other. Exemplarily, the connecting member can be a connecting plate.

[0391] In some implementable manners, the two lateral guides 64 are respectively slidably connected to the cutting device 40, and the two lateral guides 64 are connected to each other.

[0392] In some possible implementation manners, referring to FIGS. 2, 4 and 5, the cutting device 40 further includes a sliding connector 44. The cutting device 40 is slidably connected with the lateral guide 64 through the sliding connector 44. For example, the sliding connector 44 can be integrally formed with the housing of the driver 41, which is beneficial to improve the mechanical connection strength between the sliding connector 44 and the driver 41. The material of the sliding connector 44 can be the same as that of the housing. Alternatively, the sliding connector 44 can be detachably connected with the housing of the driver 41.

[0393] In some examples, the number of the sliding connectors 44 can be two. The two sliding connectors 44 are spaced apart along the lateral direction X of the mower 10, i.e., spaced apart along the sliding direction of the cutting device 40. The two sliding connectors 44 are simultaneously slidably connected with the lateral guide 64, which can further ensure the stability of the cutting device 40 during the sliding process relative to the lateral guide 64.

[0394] Referring to FIGS. 2, 4 and 5, the position adjusting device 50 further includes a lateral driving assembly 70 according to the embodiment of the present application. The lateral driving assembly 70 is connected with the cutting device 40. The lateral driving assembly 70 is configured to drive the cutting device 40 to slide relative to the lateral guide 64. The lateral driving assembly 70 can provide power to the cutting device 40 to drive the cutting device 40 to move laterally. In some examples, the lateral driving assembly 70 can be connected with the machine body 30. In some examples, the lateral driving assembly 70 is arranged above the cutter cover 43 along the vertical direction Y. The cutter cover 43 can block the cut grass clippings from entering the position where the lateral driving assembly 70 is arranged, thereby preventing the problem of excessive accumulation of grass clippings in the lateral driving assembly 70.

[0395] In the embodiment of the present application, the height adjusting assembly 60, the cutting device 40 and the lateral driving assembly 70 are connected with each other to form an integrated structure. The cutting device 40 is driven to move by the cooperative action of the lateral driving assembly 70 and the height adjusting assembly 60. The lateral driving assembly 70 and the height adjusting assembly 60 are independently arranged, which is beneficial to reduce the structural complexity of the position adjusting device 50 and the manufacturing difficulty of the position adjusting device 50.

[0396] In some possible implementation manners, the lateral driving assembly 70 includes a deflection cam 71. The deflection cam 71 is connected with the cutting device 40. The deflection cam 71 is configured to drive the cutting device 40 to slide on the lateral guide 64. The deflection cam 71 can provide a stable driving force to the cutting device 40 to ensure the stability of the cutting device 40 during the sliding process on the lateral guide 64.

[0397] The cutting device 40 comprises a receiving groove 40a. At least part of the deflection cam 71 is arranged in the receiving groove 40a. The outer circumferential surface of the deflection cam 71 has a contact area with the side surface of the receiving groove 40a. The surface of the deflection cam 71 facing the receiving groove 40a has a spacing from the bottom surface of the receiving groove 40a. The deflection cam 71 is slidably connected to the receiving groove 40a. When the cutting device 40 moves vertically, the deflection cam 71 can slide in the receiving groove 40a at the same time, effectively avoiding the occurrence of jamming between the deflection cam 71 and the cutting device 40 when the cutting device 40 moves vertically.

[0398] The deflection cam 71 is arranged in the receiving groove 40a in such a way that the deflection cam 71 can be spatially multiplexed with the cutting device 40, improving the structural compactness of the deflection cam 71 and the cutting device 40, reducing the volume of the overall structure formed by the deflection cam 71 and the cutting device 40, and occupying less space.

[0399] The receiving groove 40a has two opposite side surfaces. The two opposite side surfaces of the receiving groove 40a are arranged in the transverse direction X of the mower 10. The deflection cam 71 is in contact with the two opposite side surfaces of the receiving groove 40a. When the cutting device 40 is in the side cutting position, the cutting device 40 is in the side cutting state. In the side cutting state, the deflection cam 71 remains in contact with the two opposite side surfaces of the receiving groove 40a.

[0400] When the transverse driving assembly 70 drives the deflection cam 71 to rotate forward or reverse, the deflection cam 71 can rotate in the receiving groove 40a. The rotation axis of the deflection cam 71 is perpendicular to the sliding direction of the cutting device 40. The rotation axis of the deflection cam 71 is a horizontal axis. The deflection cam 71 can apply a force to the cutting device 40 to push the cutting device 40 to slide relative to the transverse guide 64, thereby realizing the transverse movement of the cutting device 40.

[0401] In some examples, in the vertical direction Y, the receiving groove 40a penetrates the cutting device 40 up and down.

[0402] In some examples, referring to FIGS. 2 and 4, the lateral driving assembly 70 includes a second driving component 72. The deflection cam 71 is connected to an output shaft of the second driving component 72. The second driving component 72 is configured to drive the deflection cam 71 to rotate. The output shaft has an axis which is the rotation axis of the deflection cam 71. The output shaft of the second driving component 72 is connected to an edge position of the deflection cam 71. The output shaft of the second driving component 72 has a spacing from the wheel center of the deflection cam 71 in the radial direction of the deflection cam 71. When the second driving component 72 drives the deflection cam 71 to rotate, the wheel center of the deflection cam 71 moves along a circular path around the axis of the output shaft. In an example, the deflection cam 71 can have a circular wheel structure. In an example, the second driving component 72 can be connected to the body 30. The body 30 supports the lateral driving assembly 70. The relative position between the lateral driving assembly 70 and the body 30 does not change.

[0403] In some examples, the second driving component 72 can include a motor and a gearbox. The motor is connected to an input shaft of the gearbox. An output shaft of the gearbox is connected to the deflection cam 71.

[0404] In some examples, the second driving component 72 can include a motor. An output shaft of the motor is connected to the deflection cam 71.

[0405] In some examples, the cutting device 40 includes two sliding connectors 44. The two sliding connectors 44 are spaced apart in the sliding direction of the cutting device 40. The space between the two sliding connectors 44 forms the accommodating groove 40a.

[0406] In some examples, the deflection cam 71 is provided with a first limiting portion 711. The body 30 is provided with a second limiting portion (not shown in the figures) and a third limiting portion (not shown in the figures). The second limiting portion and the third limiting portion are spaced apart in the sliding direction of the cutting device 40. When the cutting device 40 is in the center position, the first limiting portion 711 is in contact with the second limiting portion. When the cutting device 40 is in the edge cutting position, the first limiting portion 711 is in contact with the third limiting portion.

[0407] When the cutting device 40 is driven by the deflection cam 71 to move laterally from the edge cutting position to the center position, the first limiting portion 711 of the deflection cam 71 cooperates with the second limiting portion of the body 30, so that the deflection cam 71 rotates to a predetermined position. The second limiting portion can limit the deflection cam 71 from continuing to rotate, so as to avoid the problem that the cutting device 40 fails to accurately move to the center position due to the deflection cam 71 rotating too much.

[0408] When the cutting device 40 is driven to move laterally from the center position to the edge cutting position by the deflection cam 71, the first limiting part 711 of the deflection cam 71 cooperates with the third limiting part of the machine body 30, so that the deflection cam 71 is rotated to a predetermined position. The third limiting part limits the deflection cam 71 from continuing to rotate, avoiding the problem that the cutting device 40 cannot be accurately moved to the edge cutting position due to the deflection cam 71 rotating too much.

[0409] Through the cooperation of the first limiting part 711 with the second limiting part and the first limiting part 711 with the third limiting part, the position accuracy of the cutting device 40 moving laterally to the center position or the edge cutting position can be ensured, and the position moving precision is improved.

[0410] In some examples, the first limiting part 711 is arranged on the surface of the deflection cam 71 facing away from the lateral guide 64. The first limiting part 711 and the output shaft of the second driving part 72 are respectively arranged on both sides of the wheel center of the deflection cam 71. The first limiting part 711 is a limiting shaft. The second limiting part and the third limiting part can be limiting grooves cooperating with the limiting shaft. Alternatively, the first limiting part 711 is a limiting groove. The second limiting part and the third limiting part can be limiting shafts cooperating with the limiting groove.

[0411] In some realizable ways, Fig. 6 schematically shows a partial structure of the cutting system 20. Referring to Fig. 6, the lateral driving assembly 70 includes a lead screw 73 and an adapter 74. The lead screw 73 is threadedly connected with the adapter 74. The adapter 74 is connected with the cutting device 40. The lead screw 73 is threadedly connected with the adapter 74, which is conducive to ensuring the smooth movement of the adapter 74 and the displacement precision of the adapter 74, thereby facilitating the smooth movement of the cutting device 40 and the displacement precision of the cutting device 40.

[0412] The adapter 74 is slidably connected to the cutting device 40. When the cutting device 40 moves vertically, the adapter 74 and the cutting device 40 slide relative to each other, effectively avoiding the adapter 74 and the cutting device 40 from being stuck together when the cutting device 40 moves vertically.

[0413] The axis of the lead screw 73 is the same as the lateral direction X of the lawn mower 10. When the lateral driving assembly 70 drives the lead screw 73 to rotate, the adapter 74 can move relative to the lead screw 73 along the axis of the lead screw 73, so that the adapter 74 can push and pull the cutting device 40, so that the cutting device 40 can move laterally on the lateral guide 64.

[0414] In some examples, the cutting device 40 includes a receiving groove 40a. At least part of the adapter 74 is disposed in the receiving groove 40a. The adapter 74 can be spatially multiplexed with the cutting device 40, improving the structural compactness of the adapter 74 and the cutting device 40, reducing the volume of the overall structure formed by the adapter 74 and the cutting device 40, and occupying less space. The outer peripheral surface of the deflection cam 71 has a contact area with the side surface of the receiving groove 40a. There is a spacing between the surface of the adapter 74 facing the receiving groove 40a and the bottom surface of the receiving groove 40a. The adapter 74 is slidably connected to the receiving groove 40a. When the cutting device 40 moves vertically, the adapter 74 can simultaneously slide in the receiving groove 40a, effectively preventing the adapter 74 from being stuck with the cutting device 40 when the cutting device 40 moves vertically.

[0415] In some examples, FIG. 7 schematically shows a partial structure of the transverse driving assembly 70. Referring to FIG. 7, the adapter 74 includes a main body 741 and two wing plates 742. The wing plates 742 are connected to the main body 741. The two wing plates 742 are located on the same side of the main body 741. The two wing plates 742 are spaced apart along the axial direction of the lead screw 73. Threaded holes are provided on the wing plates 742. The lead screw 73 is threadedly connected to the threaded holes of the two wing plates 742. The wing plates 742 of the adapter 74 are connected to the cutting device 40. The wing plates 742 of the adapter 74 are slidably connected to the cutting device 40. When the transverse driving assembly 70 drives the lead screw 73 to rotate, the wing plates 742 can move relative to the lead screw 73 along the axial direction of the lead screw 73, so that the wing plates 742 can push and pull the cutting device 40.

[0416] In some examples, the cutting device 40 includes a receiving groove 40a. The wing plates 742 are slidably connected to the receiving groove 40a. At least part of the wing plates 742 is disposed in the receiving groove 40a. The two wing plates 742 of the adapter 74 can be inserted into the receiving groove 40a, and the wing plates 742 are in contact with the side surface of the receiving groove 40a, so that the wing plates 742 of the adapter 74 can be spatially multiplexed with the cutting device 40, improving the structural compactness of the adapter 74 and the cutting device 40, reducing the volume of the overall structure formed by the adapter 74 and the cutting device 40, and occupying less space. The wing plates 742 are slidably connected to the receiving groove 40a. When the cutting device 40 moves vertically, the wing plates 742 can slide in the receiving groove 40a.

[0417] In some examples, the cutting device 40 includes two sliding connectors 44. The two sliding connectors 44 are spaced apart along the axial direction of the lead screw 73. The space between the two sliding connectors 44 forms a receiving groove 40a. At least part of the adapter 74 is located between the two sliding connectors 44, so as to effectively utilize the space between the two sliding connectors 44, and facilitate improving the compactness of the overall structure of the cutting system 20, reducing the overall volume, and occupying less space.

[0418] In some possible implementations, the lateral driving assembly 70 includes a second driving component 72. A lead screw 73 is connected to an output shaft of the second driving component 72. In some examples, the second driving component 72 includes an electric motor. The lead screw 73 is connected to an output shaft of the electric motor. In some examples, the second driving component 72 is arranged on the machine body 30.

[0419] In some possible implementations, FIG. 8 schematically shows a partial structure of the cutting system 20. Referring to FIG. 8, the lateral driving assembly 70 includes a telescopic rod 75 and an adapter 74. The telescopic rod 75 is connected to the adapter 74. The adapter 74 is connected to the cutting device 40. The telescopic rod 75 is connected to the adapter 74 in a manner that facilitates smooth movement of the adapter 74 and facilitates displacement accuracy of the adapter 74, thereby facilitating smooth movement and displacement accuracy of the cutting device 40. The adapter 74 is slidably connected to the cutting device 40. When the cutting device 40 moves vertically, the adapter 74 and the cutting device 40 slide relative to each other, effectively avoiding jamming between the adapter 74 and the cutting device 40 when the cutting device 40 moves vertically.

[0420] The telescopic rod 75 moves in the same lateral direction X as the lawn mower 10. When the lateral driving assembly 70 drives the telescopic rod 75 to move, the adapter 74 can move in the telescopic movement direction of the telescopic rod 75, so that the adapter 74 can push and pull the cutting device 40, and the cutting device 40 can move laterally on the lateral guide 64.

[0421] FIG. 9 schematically shows a partial structure of the cutting system 20. Referring to FIG. 9, the present application also provides a position adjusting device 50 for adjusting a position of the cutting device 40 of the lawn mower 10. The position adjusting device 50 includes a support arm 62, a support base 61, a driving unit, and a lateral guide 64. One end of the support arm 62 is rotatably connected to the support base 61. The other end of the support arm 62 is connected to the lateral guide 64. The cutting device 40 is connected to the lateral guide 64. The cutting device 40 includes a cutter head 42. The cutting device 40 moves along a length direction of the lateral guide 64 under the action of a driving force. The driving unit is configured to drive the support arm 62 to rotate relative to the support base 61 to perform a height adjustment action, so as to adjust a height of the cutting device 40 above the ground. The cutting device 40 is configured to cut grass. A rotating speed of the cutter head 42 in a first state is greater than or equal to a rotating speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state in which the moving action is performed. The cutting device 40 is configured to cut grass.

[0422] When the cutting device 40 is subjected to a component force or a resultant force in the length direction of the lateral guide 64, the cutting device 40 slides relative to the lateral guide 64, so as to move the cutting device 40 between the center position and the edge cutting position.

[0423] In the case that the position adjusting device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected with the transverse guide 64 in the position adjusting device 50. The position adjusting device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the transverse guide 64. Under the cooperation of the support arm 62, the support base 61, the driving unit and the transverse guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, when the cutting device 40 is subjected to a component force or a resultant force along the length direction of the transverse guide 64, the cutting device 40 slides relative to the transverse guide 64, so that the cutting device 40 moves along the length direction of the transverse guide 64, thereby realizing the movement of the cutting device 40 between the center position and the edge cutting position. For example, the cutting device 40 can be manually pushed to slide relative to the transverse guide 64. Alternatively, the cutting device 40 can be pushed to slide relative to the transverse guide 64 by means of the transverse driving assembly 70, so as to realize the automatic adjustment of the position of the cutting device 40.

[0424] The mounting structure that the support arm 62 is connected with the transverse guide 64 can realize the position adjustment of the cutting device 40, and at the same time, reduces the space occupied by the position adjusting device 50 and the cutting device 40 in the machine body, which is helpful to realize the intelligentization and miniaturization of the mower 10.

[0425] Through the position adjusting device 50, the cutting device 40 can be adjusted in the height direction and adjusted in the horizontal direction. Based on this, under the condition that the movement direction and the movement path of the mower 10 are unchanged, the above-mentioned position adjusting device 50 is used, so that the mower 10 obtains a larger mowing range, and the working efficiency of the mower 10 is improved.

[0426] When the cutting device 40 is in the edge cutting position, the cutting device 40 can trim the area close to the boundary of the lawn, so as to avoid the residual large area of uncut lawn at the boundary of the lawn, and improve the cutting efficiency and the cutting effect.

[0427] In addition, when the position adjusting device 50 is applied to the lawn mower 10, the position adjusting device 50 can adjust the height of the cutting device 40, so that when the cutting device 40 is in the edge cutting position, the second lower edge 43a of the cutter cover 43 can be lower than the first lower edge 311 of the machine body 30 in the vertical direction Y, and the second lower edge 43a of the cutter cover 43 can be lower than the cutter disc 42. There is a large safety distance between the second lower edge 43a of the cutter cover 43 and the cutter disc 42. When the lawn mower 10 is being carried, the palm of the operator's hand can be attached to the side skirt 31 of the machine body 30, and the fingertips of the fingers can be buckled to the inside of the cutter cover 43. Under the protection of the cutter cover 43, the operator's fingers are mostly located outside the cutter cover 43, so that the operator's fingers are not easy to touch the cutter disc 42. At the same time, the second lower edge 43a of the cutter cover 43 is lower than the cutter disc 42, so that when the operator's fingers bypass the second lower edge 43a of the cutter cover 43 and buckle to the inside of the cutter cover 43, the fingertips of the fingers are also not easy to touch the cutter disc 42.

[0428] Therefore, when the position adjusting device 50 of the embodiment of the present application is applied to the lawn mower 10, the lawn mower 10 can not only effectively cut the lawn near the lawn boundary and improve the cutting efficiency and cutting effect, but also adjust the position of the cutting device 40 through the position adjusting device 50, so that the cutting device 40 in the edge cutting position can meet the use requirements of the lawn mower 10 and will not cause injury to people or animals.

[0429] In some possible implementations, after the moving action and the height adjusting action are performed, and the cutting device is started, the rotating speed of the cutter disc 42 in the non-grass blocking state is increased to 1800-3500 revolutions per minute.

[0430] When the moving action and the height adjusting action are completed, and the cutting device is started, the rotating speed of the cutter head 42 in the non-grass blocking state cannot be lower than 1800 rpm, otherwise, the force on the vegetation when contacting the blade 421 is too small, and the vegetation cannot be cut off smoothly, and the grass blocking phenomenon is prone to occur, and even the cutter head 42 is stopped due to the grass blocking, which can also cause the mowing to be missed, and the resistance of the grass to the cutter head 42 is greater, causing the cutter head 42 to be blocked. When the rotating speed of the cutter head 42 is between 1800 rpm and 3500 rpm, it is an ideal cutting state, and further increasing the rotating speed of the cutter head 42 will also basically maintain the corresponding cutting efficiency, and even too fast rotating speed cannot form sufficient contact with the grass surface, and the cutting effect is slightly worse. At the same time, the rotating speed of the cutter head 42 during cutting cannot be greater than 3500 rpm, and higher rotating speed will form greater noise due to too fast rotation of the cutter head 42, bring more unnecessary energy consumption, and reduce the safety factor and increase the risk factor. Therefore, the rotating speed of the cutter head 42 is maintained at 1800-3500 rpm, which is an ideal cutting state. The rotating speed of the cutter head 42 also affects the service life of the blade, and when the rotating speed of the cutter head 42 is less than 1800 rpm, it is basically in a non-cutting state, and the blade 421 can maintain a basically stable service life. When the rotating speed of the cutter head 42 reaches 1800 rpm, it enters the working state of cutting vegetation, and the service life of the blade 421 begins to decrease. When the rotating speed of the cutter head 42 exceeds 1800 rpm, the service life of the blade 421 decreases obviously, and too fast rotating speed can form negative pressure, which can suck particles and foreign matters (such as small stones) outside the vegetation to the blade 421 of the cutter head 42, causing damage to the cutting edge, thereby affecting the service life of the cutting head. Therefore, the rotating speed of the cutter head 42 is maintained at 1800-3500 rpm, which is an ideal cutting state, and the service life of the cutting head is also maintained below a normal wear expectation.

[0431] In some implementable manners, the support arm 62 is connected with the driving unit; and / or the cutting device 40 is connected with the driving unit; and / or the transverse guide 64 is connected with the driving unit.

[0432] In some implementable manners, at least one support arm 62 is connected with the driving unit; and / or the cutting device 40 is connected with the driving unit; and / or at least one transverse guide 64 is connected with the driving unit.

[0433] At least one of the support arm 62, the cutting device 40 and the transverse guide 64 can be connected with the driving unit.

[0434] In some possible implementations, the driving unit is connected with the at least one support arm 62. The driving unit drives the support arm 62 to rotate up and down, further driving the cutting device 40 to move up and down, so as to adjust the height of the cutting device 40. In this way, the support arm 62 is connected with the driving unit, so that the installation difficulty is low, and the stability of the structure assembly is improved.

[0435] In some examples, the driving unit includes a cam 63. The cam 63 includes a helical surface 631. The support arm 62 is connected with the driving unit. The support arm 62 abuts against the helical surface 631.

[0436] The helical surface 631 of the cam 63 is a continuous surface, so as to improve the stability of the movement of the support arm 62 during the swinging process relative to the support base 61, and reduce the possibility of impact and jerk between the support arm 62 and the cam 63.

[0437] In some possible implementations, FIG. 10 schematically shows a partial structure of the cutting system 20. Referring to FIG. 10, the cutting device 40 is connected with the driving unit. The driving unit is directly connected with the cutting device 40, without the need of other structures or components for force transmission. The driving unit does not need to exert a large force on the cutting device 40 to complete the lifting, and the operation is convenient.

[0438] In some examples, the driving unit includes a cam 63. The cam 63 includes a helical surface 631. The cutting device 40 is connected with the driving unit. The cutting device 40 abuts against the helical surface 631. A part of the cutting device 40 can abut against the helical surface 631 of the cam 63. The cam 63 can drive the cutting device 40 to move up and down, while driving the support arm 62 to rotate relative to the support base 61. When the cutting device 40 moves along the length direction of the transverse guide 64, the cutting device 40 and the helical surface 631 of the cam 63 slide relative to each other along the length direction of the transverse guide 64.

[0439] The helical surface 631 of the cam 63 is a continuous surface, so as to improve the stability of the movement of the cutting device 40, and reduce the possibility of impact and jerk between the cutting device 40 and the cam 63.

[0440] In some possible implementations, FIG. 11 schematically shows a partial structure of the cutting system 20. Referring to FIG. 11, at least one transverse guide 64 is connected with the driving unit. The transverse guide 64 serves as an intermediate connection structure between the support arm 62 and the cutting device 40, and drives the support arm 62 and the cutting device 40 to move through the movement of the transverse guide 64, without the need of too many structures and components for force transmission, so as to ensure the stability of the movement state.

[0441] In some examples, the driving unit comprises a cam 63. The cam 63 comprises a helical surface 631. The transverse guide 64 is connected to the driving unit. The transverse guide 64 abuts against the helical surface 631. One end of the transverse guide 64 can abut against the helical surface 631 of the cam 63. The driving unit drives the transverse guide 64 to move up and down, to drive the cutting device 40 to move up and down, to realize the height adjustment of the cutting device 40, and to drive the support arm 62 to rotate relative to the support base 61.

[0442] The helical surface 631 of the cam 63 is a continuous surface, thereby facilitating the stability of the movement of the transverse guide 64 and reducing the possibility of impact and jerk between the transverse guide 64 and the cam 63.

[0443] In some implementable manners, the support arm 62 is correspondingly provided with a driving unit. The support arm 62 is connected to the driving unit. The support arm 62 abuts against the helical surface 631. The cutting device 40 is correspondingly provided with a driving unit. The cutting device 40 is connected to the driving unit. The cutting device 40 abuts against the helical surface 631. The transverse guide 64 is correspondingly provided with a driving unit. The transverse guide 64 is connected to the driving unit. The transverse guide 64 abuts against the helical surface 631.

[0444] FIG. 12 schematically shows a partial structure of the cutting system 20. Referring to FIG. 12, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjustment device 50 comprises a support arm 62, a support base 61, a driving unit, a transverse guide 64, and a transverse driving assembly 70.

[0445] One end of the support arm 62 is rotatably connected to the support base 61. The other end of the support arm 62 is connected to the transverse guide 64. The cutting device 40 is connected to the transverse guide 64. The cutting device 40 comprises a cutter head 42. The transverse driving assembly 70 is connected to the cutting device 40, to drive the cutting device 40 to perform a moving action in the length direction of the transverse guide 64. The driving unit is used to drive the support arm 62 to rotate relative to the support base 61, to perform a height adjustment action, to adjust the height of the cutting device 40 above the ground. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state in which the moving action is performed. The cutting device 40 is used for mowing.

[0446] In the case that the position adjusting device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected with the transverse guide 64 in the position adjusting device 50. The position adjusting device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the transverse guide 64. Under the cooperation of the support arm 62, the support base 61, the driving unit and the transverse guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the transverse driving assembly 70 drives the cutting device 40 to slide along the transverse guide 64, so that the cutting device 40 moves along the length direction of the transverse guide 64. By driving the cutting device 40 to move transversely through the transverse driving assembly 70, the automatic adjustment of the position of the cutting device 40 can be realized, and the adjustment efficiency and accuracy of the position of the cutting device 40 can be improved.

[0447] The mounting structure that the support arm 62 is connected with the transverse guide 64 can reduce the space occupied by the position adjusting device 50 and the cutting device 40 in the machine body when the position of the cutting device 40 is adjusted, which is helpful to realize the intelligence and miniaturization of the mower 10.

[0448] Through the position adjusting device 50, the cutting device 40 can be adjusted in the height direction and adjusted in the horizontal direction. Therefore, under the condition that the movement direction and path of the mower 10 are unchanged, the position adjusting device 50 can make the mower 10 have a larger mowing range and improve the working efficiency of the mower 10.

[0449] In some possible manners, Fig. 13 schematically shows the partial structure of the cutting system 20. Referring to Fig. 13, the support arm 62 includes a transverse connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the transverse connecting arm 621, and the second sub-support arm 623 is arranged on the other side of the transverse connecting arm 621. The end of the first sub-support arm 622 is rotatably connected with the support base 61. The transverse guide 64 is rotatably connected with the end of the second sub-support arm 623. The transverse connecting arm 621 is connected with the driving unit.

[0450] By applying a torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support base 61, and at the same time, the second sub-support arm 623 drives the cutting device 40 to move vertically. The transverse connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623, which is helpful to improve the compactness of the overall structure of the support arm 62 and reduce the occupied space.

[0451] Figure 14 schematically shows a partial structure of the cutting system 20. Referring to Figure 14, the embodiment of the present application provides a position adjusting device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjusting device 50 comprises at least two support arms 62, at least two lateral guides 64, a support base 61, a driving unit, and a lateral driving assembly 70.

[0452] The number of the lateral guides 64 is consistent with and corresponds to the number of the support arms 62. Each of the support arms 62 is arranged in the vertical direction Y. One end of each of the support arms 62 is rotatably connected to the support base 61. The other end of each of the support arms 62 is rotatably connected to the corresponding lateral guide 64. Each of the support arms 62 is relatively fixed; and / or, each of the lateral guides 64 is relatively fixed. The cutting device 40 is connected to at least one of the lateral guides 64. The cutting device 40 comprises a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The driving unit is configured to drive each of the support arms 62 to rotate relative to the support base 61 to perform a height adjusting action to adjust the height of the cutting device 40 above the ground. The rotational speed of the cutter head 42 in a first state is greater than or equal to the rotational speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state in which the moving action is performed. The cutting device 40 is configured to mow grass.

[0453] In the case that the position adjusting device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected to the lateral guide 64 in the position adjusting device 50. The position adjusting device 50 can be used to adjust the position of the cutting device 40 by means of the support arms 62, the support base 61, the driving unit, and the lateral guides 64. The cutting device 40 can move vertically along the vertical direction Y under the cooperation of the support arms 62, the support base 61, the driving unit, and the lateral guides 64. In addition, the lateral driving assembly 70 drives the cutting device 40 to slide along the lateral guide 64 to move the cutting device 40 in the length direction of the lateral guide 64. The lateral movement of the cutting device 40 driven by the lateral driving assembly 70 is conducive to the automatic adjustment of the position of the cutting device 40 and improves the adjustment efficiency and accuracy of the position of the cutting device 40.

[0454] The relative positions of the support arms 62 are relatively fixed. The relative positions of the transverse guides 64 are relatively fixed. The support base 61, all the support arms 62, and all the transverse guides 64 can form a linkage structure relationship, thereby facilitating further improvement of the connection stability between the support base 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during rotation relative to the support arms 62.

[0455] In some possible implementations, referring to FIG. 14, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjustment device 50 includes the support arms 62, the support base 61, a driving unit, the transverse guides 64, and the transverse driving assembly 70.

[0456] The number of the support arms 62 and the number of the transverse guides 64 are both two. The two support arms 62 are spaced apart along the vertical direction Y. One end of each of the two support arms 62 is rotatably connected to the support base 61. The other end of each of the two support arms 62 is rotatably connected to the corresponding transverse guide 64. The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. The cutting device 40 is slidably connected to at least one of the transverse guides 64. The cutting device 40 includes the cutterhead 42. The transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move along the length direction of the transverse guide 64. The driving unit is configured to drive the two support arms 62 to rotate relative to the support base 61 to perform a height adjustment action. The height of the cutting device 40 above the ground is adjusted. The rotational speed of the cutterhead 42 in a first state is greater than or equal to the rotational speed of the cutterhead 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state in which the moving action is performed. The cutting device 40 is configured to mow grass.

[0457] The position adjustment device 50 includes the two support arms 62 and the two transverse guides 64. The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. The relative positions of the two support arms 62 are relatively fixed. The relative positions of the two transverse guides 64 are relatively fixed. The support base 61, the two support arms 62, and the two transverse guides 64 can form a four-bar linkage structure relationship, thereby facilitating further improvement of the connection stability between the support base 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during rotation relative to the support arms 62.

[0458] The mounting structure of the support arm 62 and the transverse guide 64 is connected to each other, which can realize the position adjustment of the cutting device 40, reduce the space occupied by the position adjustment device 50 and the cutting device 40 in the machine body, and help realize the intelligentization and miniaturization of the mower 10.

[0459] The position adjustment device 50 can realize the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction. Based on this, the mower 10 has a larger mowing range and improves the working efficiency of the mower 10 by using the above-mentioned position adjustment device 50 without changing the movement direction and path of the mower 10.

[0460] In some possible implementation manners, the number of support arms 62 is two. The two support arms 62 are arranged at intervals along the vertical direction Y. The two support arms 62 are rotatably connected to the support base 61, respectively. The number of transverse guides 64 is two. The two transverse guides 64 are arranged at intervals along the vertical direction Y. The two transverse guides 64 are rotatably connected to the two support arms 62, respectively. The two transverse guides 64 are slidably connected to the cutting device 40, respectively. Therefore, the support base 61, the two support arms 62, the two transverse guides 64 and the cutting device 40 can form a four-bar linkage structure relationship, thereby further improving the connection stability between the support base 61, the support arms 62, the transverse guides 64 and the cutting device 40 and the position stability of the cutting device 40 during the rotation relative to the support arms 62. The two transverse guides 64 are connected to the cutting device 40, respectively, and the relative fixation of the two transverse guides 64 is realized through the cutting device 40, so that the additional fixing member for connecting the two transverse guides 64 or the two support arms 62 is omitted, and the cost of accessories is saved.

[0461] In some possible implementation manners, the uppermost support arm 62 is connected to the driving unit. The driving unit can drive the two support arms 62 to rotate relative to the support base 61 synchronously when the driving unit is connected to the uppermost support arm 62, so that the connection structure between the driving unit and the lower support arm 62 is not needed, and the design difficulty of the connection structure between the driving unit and the two support arms 62 is reduced.

[0462] In some possible implementation manners, the two support arms 62 are connected to each other, and / or the two transverse guides 64 are connected to each other.

[0463] In some examples, the two support arms 62 are connected to each other. The two support arms 62 are connected through an additional connecting component. The support base 61, the two support arms 62, the two transverse guides 64 and the connecting component can form a four-bar linkage structure relationship, thereby further improving the connection stability between the support base 61, the support arms 62, the transverse guides 64 and the connecting component and the position stability of the cutting device 40 during the rotation relative to the support arms 62.

[0464] In some examples, the two lateral guides 64 are connected to each other. The two lateral guides 64 are connected by a connecting component. A four-bar linkage structure relationship can be formed between the support base 61, the two support arms 62, the two lateral guides 64, and the connecting component, thereby facilitating further improvement of the connection stability between the support base 61, the support arms 62, the lateral guides 64, and the connecting component, and the position stability of the cutting device 40 during rotation relative to the support arms 62.

[0465] In some examples, the two support arms 62 are connected to each other, and the two lateral guides 64 are connected to each other.

[0466] In some implementable manners, the position adjusting device 50 further comprises a lateral driving assembly 70. The lateral driving assembly 70 is configured to apply an action force perpendicular to the vertical direction Y to the cutting device 40, so as to drive the cutting device 40 to slide relative to the lateral guides 64. In the manner that the cutting device 40 is driven to move laterally by the lateral driving assembly 70, it is beneficial to realize the automatic adjustment of the position of the cutting device 40, and improve the adjustment efficiency and accuracy of the position of the cutting device 40.

[0467] In some implementable manners, the support arm 62 is rotatably connected to the support base 61 through a horizontal shaft 80. The support arm 62 comprises a first connecting portion 62b. The lateral guide 64 is rotatably connected to the first connecting portion 62b. In the manner that the support arm 62 and the support base 61 are connected through the horizontal shaft 80, it is beneficial to reduce the structural design difficulty and disassembly difficulty of the rotation pair formed between the support arm 62 and the support base 61, and to reduce the machining cost and maintenance cost.

[0468] In some implementable manners, the support arm 62 comprises a second connecting portion 62c. The driving unit is connected to the second connecting portion 62c. The second connecting portion 62c is located between the first connecting portion 62b and the horizontal shaft 80. The second connecting portion 62c is located on the side of the horizontal shaft 80 facing the first connecting portion 62b, so that the overall structure of the driving unit and the support arm 62 is relatively compact and occupies a small space.

[0469] In some implementable manners, each support arm 62 comprises at least two lateral connecting arms 621. All the lateral connecting arms 621 constitute a lateral connecting arm group. A first sub-support arm 622 is arranged on one side of the lateral connecting arm group, and a second sub-support arm 623 is arranged on the other side. Exemplarily, the at least two lateral connecting arms 621 are arranged in a spaced manner in a direction perpendicular to the lateral guide 64.

[0470] The number of the transverse connecting arms 621 is set to at least two, which is beneficial to improve the mechanical strength of each support arm 62. In addition, at least one transverse connecting arm 621 can be connected with the driving unit, which improves the arrangement flexibility of the driving unit.

[0471] In some possible implementation manners, each support arm 62 includes one transverse connecting arm 621. One side of the transverse connecting arm 621 is provided with the first sub-support arm 622, and the other side is provided with the second sub-support arm 623.

[0472] In some possible implementation manners, FIG. 15 schematically shows a partial structure of the cutting system 20. Referring to FIG. 15, the uppermost support arm 62 includes the transverse connecting arm 621, the first sub-support arm 622 and the second sub-support arm 623. One side of the transverse connecting arm 621 is provided with the first sub-support arm 622, and the other side is provided with the second sub-support arm 623. The end of the first sub-support arm 622 is rotatably connected with the support base 61. The transverse guide 64 is rotatably connected with the end of the second sub-support arm 623. The transverse connecting arm 621 is connected with the driving unit.

[0473] By applying a torque to the transverse connecting arm 621, the first sub-support arm 622 can be driven to rotate relative to the support base 61, and at the same time, the second sub-support arm 623 drives the cutting device 40 to move vertically. The transverse connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improve the overall compactness of the upper support arm 62 and occupies a small space.

[0474] FIG. 16 schematically shows a partial structure of the cutting system 20. Referring to FIG. 16, the present application provides a position adjusting device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjusting device 50 includes at least one support arm 62, a support base 61, a driving unit, a transverse guide 64 and a transverse driving assembly 70.

[0475] The support arm 62 comprises a transverse connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the transverse connecting arm 621, and the second sub-support arm 623 is arranged on the other side of the transverse connecting arm 621. The end of the first sub-support arm 622 is rotatably connected to the support base 61. The transverse guide 64 is rotatably connected to the end of the second sub-support arm 623. The cutting device 40 is connected to the transverse guide 64. The cutting device 40 comprises a cutter head 42. The transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the transverse guide 64. The driving unit is used to drive the support arm 62 to rotate relative to the support base 61 to perform a height adjustment action to adjust the height of the cutting device 40 above the ground. The rotating speed of the cutter head 42 in the first state is greater than or equal to the rotating speed of the cutter head 42 in the second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state in which the moving action is performed. The cutting device 40 is used to cut grass.

[0476] In each support arm 62, the number of first sub-support arms 622 is two. The first sub-support arms 622 are arranged at intervals in the length direction of the transverse guide 64.

[0477] In each support arm 62, the number of second sub-support arms 623 is two. The two second sub-support arms 623 are arranged at intervals in the length direction of the transverse guide 64. The accommodation part 62a is formed between the two second sub-support arms 623.

[0478] In some possible implementation manners, referring to FIG. 16, the position adjustment device 50 can comprise one support arm 62.

[0479] In the case where the position adjustment device 50 of the embodiment of the present application is applied to the grass cutter 10, the cutting device 40 can be connected to the transverse guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the transverse guide 64. Under the mutual cooperation of the support arm 62, the support base 61, the driving unit and the transverse guide 64, the cutting device 40 can move vertically in the vertical direction Y. In addition, the transverse driving assembly 70 drives the cutting device 40 to move along the transverse guide 64, so that the cutting device 40 moves in the length direction of the transverse guide 64. In this way, the cutting device 40 moves in the transverse direction through the transverse driving assembly 70, which is beneficial to realize the automatic adjustment of the position of the cutting device 40 and improve the adjustment efficiency and accuracy of the position of the cutting device 40.

[0480] The mounting structure of the support arm 62 and the transverse guide 64 is connected to each other, which can realize the position adjustment of the cutting device 40, reduce the space occupied by the position adjustment device 50 and the cutting device 40 in the machine body, and help realize the intelligentization and miniaturization of the mower 10.

[0481] The position adjustment device 50 can realize the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction. Based on this, the mower 10 can obtain a larger mowing range and improve the working efficiency of the mower 10 by using the above position adjustment device 50 without changing the movement direction and path of the mower 10.

[0482] The torque applied to the transverse connecting arm 621 can drive the first sub-support arm 622 to rotate relative to the support base 61, and at the same time, the second sub-support arm 623 drives the cutting device 40 to move vertically. The transverse connecting arm 621 is located between the first sub-support arm 622 and the second sub-support arm 623, which is beneficial to improve the compactness of the overall structure of the support arm 62 and occupy less space.

[0483] In some realizable ways, each support arm 62 includes at least two transverse connecting arms 621. All the transverse connecting arms 621 constitute a transverse connecting arm group. The first sub-support arm 622 is arranged on one side of the transverse connecting arm group, and the second sub-support arm 623 is arranged on the other side. Exemplarily, the at least two transverse connecting arms 621 are arranged at intervals in the direction perpendicular to the transverse guide 64.

[0484] In some realizable ways, at least a part of the driving unit is located between the two first sub-support arms 622. At least a part of the driving unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, which is beneficial to improve the compactness of the overall structure of the position adjustment device 50 and reduce the overall volume and occupy less space.

[0485] When the position adjustment device 50 is applied to the mower 10, a part of the cutting device 40 can be arranged in the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, which is beneficial to improve the compactness of the structure and reduce the overall volume and occupy less space.

[0486] FIG. 17 schematically shows the partial structure of the cutting system 20. Referring to FIG. 17, the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjustment device 50 includes a support arm 62, a support base 61, a driving unit, a transverse guide 64, and a transverse driving assembly 70.

[0487] In FIG. 17, the cutting device 40 is in a central position. Referring to FIG. 17, the number of the support arms 62 and the transverse guides 64 is two. The two support arms 62 are spaced apart along the vertical direction Y. Each support arm 62 comprises two sub-support arms 620. One end of each sub-support arm 620 is rotatably connected to the support base 61. The other end of each sub-support arm 620 is rotatably connected to a corresponding transverse guide 64. Along the length direction of the transverse guide 64, the two sub-support arms 620 of each support arm 62 are spaced apart. A receiving portion 62a is formed between the two sub-support arms 620. The upper sub-support arm 620 is fixed relative to the lower sub-support arm 620; and / or, the two transverse guides 64 are fixed relative to each other. The cutting device 40 is connected to at least one transverse guide 64. The cutting device 40 comprises a cutter head 42. Exemplarily, the cutting device 40 is connected to two transverse guides 64. The transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move along the length direction of the transverse guide 64. The driving unit is configured to drive the two support arms 62 to rotate relative to the support base 61 to perform a height adjustment action to adjust the height of the cutting device 40 above the ground. The rotational speed of the cutter head 42 in a first state is greater than or equal to the rotational speed of the cutter head 42 in a second state. The first state is a state after the movement action is completed and the cutting device 40 is started. The second state is a state in which the movement action is performed. The cutting device 40 is configured to cut grass.

[0488] In the case that the position adjustment device 50 of the embodiment of the present application is applied to the grass cutter 10, the cutting device 40 can be connected to the transverse guide 64 in the position adjustment device 50. The position adjustment device 50 can be configured to adjust the position of the cutting device 40 by means of the support arms 62, the support base 61, the driving unit and the transverse guides 64. The cutting device 40 can be vertically moved along the vertical direction Y under the cooperation of the support arms 62, the support base 61, the driving unit and the transverse guides 64. In addition, the transverse driving assembly 70 drives the cutting device 40 to move along the transverse guide 64, so that the cutting device 40 moves along the length direction of the transverse guide 64. The transverse movement of the cutting device 40 driven by the transverse driving assembly 70 is conducive to the automatic adjustment of the position of the cutting device 40 and improves the adjustment efficiency and accuracy of the position of the cutting device 40.

[0489] The two support arms 62 are fixed relative to each other; and / or, the two transverse guides 64 are fixed relative to each other. The support base 61, the two support arms 62 and the two transverse guides 64 can form a four-bar linkage structure relationship, so as to further improve the connection stability between the support base 61, the support arms 62 and the transverse guides 64 and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arms 62.

[0490] The position adjusting device 50 can realize the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction. Based on this, the mower 10 has a larger mowing range and improves the working efficiency of the mower 10 under the condition that the movement direction and the movement path of the mower 10 are unchanged.

[0491] When the position adjusting device 50 is applied to the mower 10, part of the cutting device 40 can be arranged in the accommodation part 62a, so as to effectively utilize the space between the two sub-support arms 620, facilitate the improvement of the structural compactness, and reduce the overall volume and the occupied space.

[0492] Referring to FIG. 17, the position adjusting device 50 is used for adjusting the position of the cutting device 40 of the mower 10. The position adjusting device 50 comprises at least two support arms 62, at least two transverse guide members 64, a support base 61, a driving unit, and a transverse driving assembly 70.

[0493] In FIG. 17, the cutting device 40 is in the central position. Referring to FIG. 17, the number of the transverse guide members 64 is consistent with and corresponds to the number of the support arms 62. The support arms 62 are arranged in the vertical direction Y. Each support arm 62 comprises two sub-support arms 620. The two sub-support arms 620 of each support arm 62 are arranged in the length direction of the transverse guide member 64 to form an accommodation part 62a. One end of each sub-support arm 620 is rotatably connected to the support base 61. The other end of each sub-support arm 620 is rotatably connected to the corresponding transverse guide member 64.

[0494] The upper sub-support arm 620 is fixed relative to the lower sub-support arm 620, and / or the two transverse guide members 64 are fixed relative to each other.

[0495] The cutting device 40 is slidably connected to the at least one transverse guide member 64. For example, the cutting device 40 is slidably connected to the two transverse guide members 64. The cutting device 40 comprises a cutter head 42. The transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the transverse guide member 64. The driving unit is used to drive all the support arms 62 to rotate relative to the support base 61 to perform the height adjustment action. The height of the cutting device 40 relative to the ground is adjusted. The rotating speed of the cutter head 42 in the first state is greater than or equal to the rotating speed of the cutter head 42 in the second state. The first state is a state after the movement action is completed and the cutting device 40 is started. The second state is a state in which the movement action is performed. The cutting device 40 is used for mowing.

[0496] In some possible implementation manners, the number of the support arms 62 and the number of the transverse guide members 64 are both two. The two support arms 62 are arranged in the vertical direction Y.

[0497] In the case that the position adjusting device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected with the transverse guide 64 in the position adjusting device 50. The position adjusting device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the transverse guide 64. Under the cooperation of the support arm 62, the support base 61, the driving unit and the transverse guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the transverse driving assembly 70 drives the cutting device 40 to slide along the transverse guide 64, so that the cutting device 40 moves along the length direction of the transverse guide 64. By driving the cutting device 40 to move transversely through the transverse driving assembly 70, the automatic adjustment of the position of the cutting device 40 can be realized, and the adjustment efficiency and the adjustment accuracy of the position of the cutting device 40 can be improved.

[0498] Each support arm 62 is relatively fixed; and / or each transverse guide 64 is relatively fixed. The support base 61, each support arm 62 and each transverse guide 64 can form a linkage structure relationship, so as to further improve the connection stability between the support base 61, the support arm 62 and the transverse guide 64 and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arm 62.

[0499] Through the position adjusting device 50, the cutting device 40 can be adjusted in the height direction and adjusted in the horizontal direction. Therefore, under the condition that the movement direction and the movement path of the mower 10 are unchanged, the position adjusting device 50 is used to make the mower 10 have a larger mowing range and improve the working efficiency of the mower 10.

[0500] In the case that the position adjusting device 50 is applied to the mower 10, a part of the cutting device 40 can be arranged in the accommodating portion 62a, so as to effectively utilize the space between the two sub-support arms 620, improve the compactness of the structure, reduce the overall volume and occupy a small space.

[0501] In some possible implementation manners, the uppermost support arm 62 of each support arm 62 is connected with the driving unit.

[0502] In some possible implementation manners, the at least two transverse guides 64 are respectively slidably connected with the cutting device 40.

[0503] At least two lateral guides 64 are respectively slidably connected with the cutting device 40. A linkage structure relationship can be formed between the support base 61, each support arm 62, each lateral guide 64 and the cutting device 40, so as to further improve the connection stability between the support base 61, the support arm 62, the lateral guide 64 and the cutting device 40. Each lateral guide 64 is connected with the cutting device 40, and the relative fixation of the two lateral guides 64 is realized through the cutting device 40, so that the additional fixing member for connecting each lateral guide 64 or each support arm 62 is saved, and the accessory cost is saved. Meanwhile, based on the result of the linkage structure relationship, it is ensured that the angle between the cutter head 42 and the ground is always consistent during the height adjustment of the cutting device 40.

[0504] In some implementable manners, the at least two support arms 62 are connected with each other. And / or, the at least two lateral guides 64 are connected with each other.

[0505] Each support arm 62 is connected with each other. Each support arm 62 is connected through an additional connecting member. A linkage structure relationship can be formed between the support base 61, each support arm 62, each lateral guide 64 and the connecting member, so as to further improve the connection stability between the support base 61, the support arm 62, the lateral guide 64 and the connecting member and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arm 62.

[0506] FIG. 18 schematically shows a partial structure of the cutting system 20. Referring to FIG. 18, the application provides a position adjusting device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjusting device 50 comprises at least two support arms 62, at least two lateral guides 64, a support base 61, a driving unit and a lateral driving assembly 70.

[0507] The number of the lateral guides 64 is consistent with and one-to-one corresponding to the number of the support arms 62. Each support arm 62 is spaced apart along the vertical direction Y. Each support arm 62 comprises a lateral connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the lateral connecting arm 621, and the second sub-support arm 623 is arranged on the other side of the lateral connecting arm 621. The end of the first sub-support arm 622 of each support arm 62 is respectively rotatably connected with the support base 61. The end of the second sub-support arm 623 of each support arm 62 is respectively rotatably connected with the corresponding lateral guide 64.

[0508] Each support arm 62 is relatively fixed; and / or, each lateral guide 64 is relatively fixed. The cutting device 40 is connected to at least one lateral guide 64. The cutting device 40 comprises a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move along the length direction of the lateral guide 64. The driving unit is used to drive all the support arms 62 to rotate relative to the support base 61 to perform a height adjustment action to adjust the height of the cutting device 40 relative to the ground. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state, the first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing grass.

[0509] In the case that the position adjustment device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected with the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the lateral guide 64. Under the mutual cooperation of the support arm 62, the support base 61, the driving unit and the lateral guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to move along the lateral guide 64, so that the cutting device 40 moves along the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral driving assembly 70, the automation of the position adjustment of the cutting device 40 is facilitated, and the adjustment efficiency and the adjustment accuracy of the position of the cutting device 40 are improved.

[0510] The mounting structure that the support arm 62 is connected with the lateral guide 64 is adopted, which not only realizes the position adjustment of the cutting device 40, but also reduces the space occupied by the position adjustment device 50 and the cutting device 40 in the machine body, which is helpful to realize the intelligence and miniaturization of the mower 10.

[0511] Through the position adjustment device 50, the cutting device 40 can be adjusted in the height direction and adjusted in the horizontal direction. Based on this, under the condition that the movement direction and the movement path of the mower 10 are unchanged, the mower 10 obtains a larger mowing range by using the above-mentioned position adjustment device 50, and the working efficiency of the mower 10 is improved.

[0512] Referring to FIG. 18, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of a cutting device 40 of a mower 10. The position adjustment device 50 comprises at least two support arms 62, at least two lateral guides 64, a support base 61, a driving unit and a lateral driving assembly 70.

[0513] The number of the lateral guides 64 is consistent with the number of the support arms 62 and one-to-one correspondence. Each support arm 62 is arranged in the vertical direction Y. Each support arm 62 includes a lateral connecting arm 621 and two sub-support arms 620. Each of the two sub-support arms 620 includes a first sub-support arm 622 and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the lateral connecting arm 621, and the second sub-support arm 623 is arranged on the other side of the lateral connecting arm 621. The end of the first sub-support arm 622 of each support arm 62 is rotatably connected to the support base 61, respectively. The lateral guide 64 is rotatably connected to the end of the second sub-support arm 623 of the corresponding support arm 62.

[0514] Each support arm 62 is relatively fixed. And / or, each lateral guide 64 is relatively fixed.

[0515] The cutting device 40 is slidingly connected to at least one lateral guide 64. The cutting device 40 includes a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The driving unit is used to drive all the support arms 62 to rotate relative to the support base 61 to perform a height adjustment action to adjust the height of the cutting device 40. The rotating speed of the cutter head 42 in the first state is greater than or equal to the rotating speed of the cutter head 42 in the second state. The first state is the state after the moving action is completed and the cutting device 40 is started. The second state is the state of performing the moving action. The cutting device 40 is used for mowing grass.

[0516] In the case that the position adjustment device 50 of the embodiment of the application is applied to the mower 10, the cutting device 40 can be connected with the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the lateral guide 64. Under the mutual cooperation of the support arm 62, the support base 61, the driving unit and the lateral guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to slide along the lateral guide 64, so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral driving assembly 70, the automation of the position adjustment of the cutting device 40 is facilitated, and the adjustment efficiency and the adjustment accuracy of the position of the cutting device 40 are improved.

[0517] Each support arm 62 is relatively fixed; and / or, each lateral guide 64 is relatively fixed. The support base 61, each support arm 62 and each lateral guide 64 can form a linkage structure relationship, thereby facilitating to further improve the connection stability between the support base 61, the support arm 62 and the lateral guide 64 and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arm 62.

[0518] In some possible implementation manners, the position adjusting device 50 comprises two support arms 62 and two lateral guides 64. The two support arms 62 are relatively fixed; and / or, the two lateral guides 64 are relatively fixed. A four-bar linkage structure relationship can be formed between the support base 61, the two support arms 62 and the two lateral guides 64, so as to further improve the connection stability between the support base 61, the support arms 62 and the lateral guides 64 and the position stability of the cutting device 40 during rotation relative to the support arms 62.

[0519] In some possible implementation manners, in each support arm 62, the number of the first sub-support arms 622 is two. The two first sub-support arms 622 are arranged at intervals along the length direction of the lateral guide 64. At least a part of the driving unit is located between the two first sub-support arms 622.

[0520] In some possible implementation manners, at least a part of the driving unit is located between the two first sub-support arms 622. At least a part of the driving unit can be located between the two first sub-support arms 622 of the same support arm 62, so as to effectively utilize the space between the two first sub-support arms 622, and improve the compactness of the overall structure of the position adjusting device 50, reduce the overall volume and occupy less space.

[0521] In some possible implementation manners, in each support arm 62, the number of the second sub-support arms 623 is two. The two second sub-support arms 623 are arranged at intervals along the length direction of the lateral guide 64. A containing portion 62a is formed between the two second sub-support arms 623.

[0522] In the case that the position adjusting device 50 is applied to the mower 10, a part of the cutting device 40 can be arranged in the containing portion 62a, so as to effectively utilize the space between the two second sub-support arms 623, improve the compactness of the structure, reduce the overall volume and occupy less space.

[0523] In some possible implementation manners, the number of the support bases 61 is two. The two support bases 61 are arranged at intervals along the length direction of the lateral guide 64. The number of the first sub-support arms 622 is two. The ends of the two first sub-support arms 622 are rotatably connected to the support bases 61, respectively. At least a part of the driving unit is located between the two support bases 61, so as to effectively utilize the space between the two support bases 61, improve the compactness of the overall structure of the position adjusting device 50, reduce the overall volume and occupy less space.

[0524] Referring to FIG. 4, an embodiment of the present application provides a position adjusting device 50 for adjusting the position of a cutting device 40 of a mower 10. The position adjusting device 50 comprises a support arm 62, a support base 61, a driving unit, a lateral guide 64 and a lateral driving assembly 70.

[0525] The number of the support arms 62 and the number of the lateral guides 64 are both two. The two support arms 62 are arranged in the vertical direction Y. Each of the support arms 62 comprises a lateral connecting arm 621, a first sub-support arm 622, and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the lateral connecting arm 621, and the second sub-support arm 623 is arranged on the other side of the lateral connecting arm 621. The ends of the first sub-support arms 622 of the two support arms 62 are rotatably connected to the support base 61, respectively. The ends of the second sub-support arms 623 of the two support arms 62 are rotatably connected to the two lateral guides 64, respectively. The two support arms 62 are relatively fixed, and / or the two lateral guides 64 are relatively fixed. The cutting device 40 is connected to at least one of the lateral guides 64. The cutting device 40 comprises a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move in the length direction of the lateral guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support base 61 to perform a height adjustment action, so as to adjust the height of the cutting device 40. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state in which the moving action is performed. The cutting device 40 is used for mowing grass.

[0526] In each of the support arms 62, the number of the first sub-support arms 622 is two. The two first sub-support arms 622 are arranged in the length direction of the lateral guide 64. At least a part of the driving unit is located between the two first sub-support arms 622.

[0527] In each of the support arms 62, the number of the second sub-support arms 623 is two. The two second sub-support arms 623 are arranged in the length direction of the lateral guide 64. A containing part 62a is formed between the two second sub-support arms 623.

[0528] In the case that the position adjustment device 50 is applied to a mower, the cutting device 40 can be slidably connected to the lateral guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arms 62, the support base 61, the driving unit, and the lateral guide 64. Under the mutual cooperation of the support arms 62, the support base 61, the driving unit, and the lateral guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the lateral driving assembly 70 drives the cutting device 40 to move along the lateral guide 64, so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral driving assembly 70, the automation of the position adjustment of the cutting device 40 is facilitated, and the adjustment efficiency and the adjustment accuracy of the position of the cutting device 40 are improved.

[0529] The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. A four-bar linkage structure relationship can be formed between the support 61, the two support arms 62, and the two transverse guides 64, thereby facilitating further improvement of the connection stability between the support 61, the support arms 62, and the transverse guides 64, and the position stability of the cutting device 40 during rotation relative to the support arms 62.

[0530] The mounting structure of the support arms 62 and the transverse guides 64 connected to each other reduces the space occupied by the position adjustment device 50 and the cutting device 40 as a whole inside the machine body while achieving position adjustment of the cutting device 40, which is conducive to realizing the intelligence and miniaturization of the lawn mower 10.

[0531] The position adjustment device 50 can realize adjustment in the height direction and adjustment in the horizontal direction of the cutting device 40. Based on this, the position adjustment device 50 described above enables the lawn mower 10 to obtain a larger mowing range and improves the working efficiency of the lawn mower 10 without changing the movement direction and movement path of the lawn mower 10.

[0532] Part of the driving unit can be located between the two first sub-support arms 622 to effectively utilize the space between the two first sub-support arms 622, thereby facilitating improvement of the compactness of the overall structure of the position adjustment device 50 and reduction of the overall volume and occupied space.

[0533] When the position adjustment device 50 is applied to the lawn mower 10, part of the cutting device 40 can be arranged in the accommodating portion 62a to effectively utilize the space between the two second sub-support arms 623, thereby facilitating improvement of the compactness of the structure and reduction of the overall volume and occupied space.

[0534] In some implementable manners, the two transverse guides 64 are respectively slidably connected to the cutting device 40. A four-bar linkage structure relationship can be formed between the support 61, the two support arms 62, the two transverse guides 64, and the cutting device 40, thereby facilitating further improvement of the connection stability between the support 61, the support arms 62, the transverse guides 64, and the cutting device 40. The two transverse guides 64 are connected to the cutting device 40, and the relative fixation of the two transverse guides 64 is realized through the cutting device 40, thereby saving the cost of parts by eliminating the need for a fixing member for connecting the two transverse guides 64 or the two support arms 62.

[0535] In some possible implementation manners, the number of the supports 61 is two. The two supports 61 are spaced apart along the length direction of the transverse guide 64. The end portions of the two first sub-support arms 622 are respectively rotatably connected to the supports 61. At least a part of the driving unit is located between the two supports 61, so as to effectively utilize the space between the two supports 61, and facilitate to improve the compactness of the overall structure of the position adjusting device 50 and reduce the overall volume and space occupation.

[0536] In some possible implementation manners, referring to FIG. 17, the transverse guide 64 includes a first end 641 and a second end 642. The first end 641 and the second end 642 are respectively rotatably connected to the two second sub-support arms 623. The cutting device 40 moves between the first end 641 and the second end 642.

[0537] The cutting device 40 moves between the ends of the transverse guide 64, which further improves the adjustment range of the cutting device 40 in the horizontal direction. Based on this, the mower 10 can obtain a larger mowing range and improve the working efficiency of the mower 10 without changing the movement direction and path of the mower 10.

[0538] FIG. 19 schematically shows a partial structure of the cutting system 20. Referring to FIG. 19, the embodiments of the present application provide a position adjusting device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjusting device 50 includes a support arm 62, a support 61, a driving unit, a transverse guide 64, and a transverse driving assembly 70.

[0539] The number of the support arms 62 and the transverse guides 64 is two. The two support arms 62 are spaced apart along the vertical direction Y. Each support arm 62 comprises two sub-support arms 620. One end of each sub-support arm 620 is rotatably connected to the support base. The other end of each sub-support arm 620 is rotatably connected to the corresponding transverse guide 64. Along the length direction of the transverse guide 64, the two sub-support arms 620 of each support arm 62 are spaced apart. The space between the two sub-support arms 620 forms a receiving portion 62a. The upper sub-support arm 620 is fixed relative to the lower sub-support arm 620; and / or, the two transverse guides 64 are fixed relative to each other. The two upper sub-support arms 620 are connected by a transverse connecting arm 621. The cutting device 40 is connected to at least one transverse guide 64. The cutting device 40 comprises a cutter head 42. The transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to move along the length direction of the transverse guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support base 61 to perform a height adjustment action to adjust the height of the cutting device 40 above the ground. The rotating speed of the cutter head 42 in the first state is greater than or equal to the rotating speed of the cutter head 42 in the second state. The first state is a state after the movement action is completed and the cutting device 40 is started. The second state is a state in which the movement action is performed. The cutting device 40 is used for mowing grass.

[0540] In the case that the position adjustment device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected to the transverse guide 64 in the position adjustment device 50. The position adjustment device 50 can be used to adjust the position of the cutting device 40 through the support arm 62, the support base 61, the driving unit and the transverse guide 64. Under the mutual cooperation of the support arm 62, the support base 61, the driving unit and the transverse guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the transverse driving assembly 70 drives the cutting device 40 to move along the transverse guide 64, so that the cutting device 40 moves along the length direction of the transverse guide 64. By driving the cutting device 40 to move transversely through the transverse driving assembly 70, the automation of the position adjustment of the cutting device 40 is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device 40 are improved.

[0541] The two support arms 62 are fixed relative to each other; and / or, the two transverse guides 64 are fixed relative to each other. The support base 61, the two support arms 62 and the two transverse guides 64 can form a four-bar linkage structure relationship, thereby facilitating the further improvement of the connection stability between the support base 61, the support arm 62 and the transverse guide 64 and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arm 62.

[0542] The mounting structure of the support arm 62 and the transverse guide 64 is connected to each other, which can realize the position adjustment of the cutting device 40, reduce the space occupied by the position adjustment device 50 and the cutting device 40 in the machine body, and help realize the intelligentization and miniaturization of the mower 10.

[0543] The position adjustment device 50 can realize the adjustment of the cutting device 40 in the height direction and the adjustment in the horizontal direction. Based on this, the mower 10 has a larger mowing range and improves the working efficiency of the mower 10 by using the above position adjustment device 50 without changing the movement direction and path of the mower 10.

[0544] In some possible implementation manners, the transverse connecting arm 621 is connected with the driving unit. The torque applied to the transverse connecting arm 621 can drive the sub-support arm 620 to rotate relative to the support base, and the sub-support arm 620 drives the driver to move vertically. The transverse connecting arm 621 as a force structure is located between the two sub-support arms 620, which is beneficial to improve the compactness of the overall structure of the support arm 62 and occupy less space.

[0545] In some possible implementation manners, the number of the support bases 61 is two. The two support bases 61 are arranged at intervals along the length direction of the transverse guide 64. The ends of the two sub-support arms 620 of each support arm 62 are rotatably connected to the support bases 61, respectively. Part of the driving unit is located between the two support bases 61.

[0546] At least part of the driving unit is located between the two support bases 61, so as to effectively utilize the space between the two support bases 61, which is beneficial to improve the compactness of the overall structure of the position adjustment device, reduce the overall volume, and occupy less space.

[0547] Referring to FIG. 19, the embodiment of the present application provides a position adjustment device 50 for adjusting the position of the cutting device 40 of the mower 10. The position adjustment device 50 includes at least two support arms 62, at least two transverse guides 64, support bases 61, a driving unit, and a transverse driving assembly 70.

[0548] The number of the transverse guides 64 is consistent with and corresponds to the number of the support arms 62. The support arms 62 are arranged at intervals in the vertical direction Y. Each support arm 62 includes two sub-support arms 620. The two sub-support arms 620 of each support arm 62 are arranged at intervals along the length direction of the transverse guide 64 to form a containing part 62a. One end of each sub-support arm 620 is rotatably connected to the support base, respectively. The other end of each sub-support arm 620 is rotatably connected to the corresponding transverse guide 64, respectively.

[0549] Each sub-supporting arm 620 is relatively fixed. The upper sub-supporting arm 620 is relatively fixed with the lower sub-supporting arm 620. And / or, each transverse guide 64 is relatively fixed.

[0550] The uppermost two sub-supporting arms 620 are connected by a transverse connecting arm 621. The cutting device 40 is slidingly connected to at least one transverse guide 64. The cutting device includes a cutter head 42. A transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action along the length direction of the transverse guide 64. A driving unit is used to drive all the supporting arms 62 to rotate relative to the support 61 to adjust the height of the cutting device 40. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state, the first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing grass.

[0551] In the case that the position adjusting device 50 of the embodiment of the present application is applied to the mower 10, the cutting device 40 can be connected to the transverse guide 64 in the position adjusting device 50. The position adjusting device 50 can be used to adjust the position of the cutting device 40 through the supporting arms 62, the support 61, the driving unit, and the transverse guide 64. Under the mutual cooperation of the supporting arms 62, the support 61, the driving unit, and the transverse guide 64, the cutting device 40 can move vertically along the vertical direction Y. In addition, the transverse driving assembly 70 drives the cutting device 40 to slide along the transverse guide 64, so that the cutting device 40 moves in the length direction of the transverse guide 64. By driving the cutting device 40 to move transversely through the transverse driving assembly 70, the automatic adjustment of the position of the cutting device 40 is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device 40 are improved.

[0552] Each supporting arm 62 is relatively fixed. And / or, each transverse guide 64 is relatively fixed. The support 61, each supporting arm 62, and each transverse guide 64 can form a linkage structure relationship, thereby facilitating the further improvement of the connection stability between the support 61, the supporting arms 62, and the transverse guides 64 and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the supporting arms 62.

[0553] In some implementable manners, the transverse connecting arm 621 of at least one supporting arm 62 is connected with the driving unit. By applying a torque to the transverse connecting arm 621, the sub-supporting arm 620 can be driven to rotate relative to the support, and at the same time, the sub-supporting arm 620 drives the driver to move vertically. The transverse connecting arm 621 as a force structure is located between the two sub-supporting arms 620, which is conducive to improving the overall structural compactness of the supporting arms 62 and occupying a small space.

[0554] The embodiment of the present application also provides a cutting system 20 for the mower 10. The cutting system 20 comprises a cutting device 40 and a position adjusting device 50. The cutting device 40 comprises a driver 41 and a cutter head 42. The cutter head 42 is connected to the output end of the driver 41. The driver 41 is used to drive rotation. The cutter head 42 is used to cut grass.

[0555] The driver 41 is connected to the position adjusting device 50. The position adjusting device 50 is used to drive the driver 41 to perform a lateral movement action, so as to move the cutting device 40 between a center position and an edge cutting position, and the position adjusting device 50 is used to drive the driver 41 to perform a height adjustment action to adjust the height of the cutting device 40 above the ground.

[0556] When the driver 42 is started in the fourth state, the state of the driver 41 performing the lateral movement action is a fifth state, and the rotating speed of the cutter head 42 in the third state is greater than or equal to the rotating speed of the cutter head 42 in the fourth state.

[0557] When the rotating speed of the cutter head 42 in the fourth state is greater than the rotating speed of the cutter head 42 in the fifth state, the rotating speed of the cutter head 42 during the lateral movement action of the cutting device 40 is less than the rotating speed of the cutter head 42 during the working of the cutting device 40. On the one hand, the interference caused by the high-speed rotation of the cutter head 42 to the lateral movement of the cutting device 40 can be reduced, the shaking of the cutting device 40 during the lateral movement can be effectively reduced, and the stability of the cutting device 40 during the movement can be improved. On the other hand, the resistance during the lateral movement of the cutting device 40 can be reduced, and the energy consumption can be saved. When the rotating speed of the cutter head 42 in the fourth state is equal to the rotating speed of the cutter head 42 in the fifth state, the rotating speed of the cutter head 42 during the lateral movement action of the cutting device 40 is consistent with the rotating speed during the working of the cutting device 40. On the one hand, the acceleration and deceleration actions of the cutting device 40 can be reduced, the position adjusting speed of the cutting device 40 can be improved, and the working efficiency of the mower 10 can be improved. On the other hand, the acceleration and deceleration actions of the cutting device 40 can be reduced, the load of the motor of the cutting device 40 can be reduced, and the service life of the motor can be improved.

[0558] In addition, the state of the driver 41 performing the height adjustment is a sixth state, and the rotating speed of the cutter head 42 in the fourth state is greater than or equal to the rotating speed of the cutter head 41 in the sixth state.

[0559] When the rotation speed of the blade disc 42 in the fourth state is greater than the rotation speed of the blade disc 42 in the sixth state, the rotation speed of the blade disc 42 during the height adjustment operation of the driver 41 is less than the rotation speed of the blade disc 42 when the driver 41 is activated. On the one hand, this can reduce the interference caused by the high-speed rotation of the blade disc 42 on the movement of the driver 41, effectively reduce the shaking during the movement of the cutting device 40, and improve the stability of the movement of the cutting device 40; on the other hand, it can reduce the resistance encountered by the driver 41 during the movement, saving energy. When the rotation speed of the blade disc 42 in the fourth state is equal to the rotation speed of the blade disc 42 in the sixth state, when the driver 41 is performing the height adjustment operation, the rotation speed of the blade disc 42 is consistent with the rotation speed of the blade disc 42 during the mowing operation. On the one hand, this can reduce the acceleration and deceleration actions of the driver 41, increase the speed of the position adjustment of the cutting device 40, and thus improve the working efficiency of the lawn mower 10; on the other hand, the reduction in the acceleration and deceleration actions of the driver 41 can reduce the load on the motor and increase the service life of the motor.

[0560] In addition, the state in which the driver 41 performs lateral movement is the fifth state, and the rotation speed of the cutter head 42 is 0 in the fifth state.

[0561] In addition, the state in which the driver 41 performs the height adjustment operation is the sixth state, and the rotation speed of the cutter head 42 is 0 in the sixth state.

[0562] In addition, the rotation speed of the cutter head 42 in the fifth state is equal to the rotation speed of the cutter head 42 in the sixth state.

[0563] In addition, the cutting device 40 of this embodiment further includes a cutter head cover 43. The cutter head cover 43 is connected to the driver 41. Along the vertical direction Y, the cutter head 42 is arranged below the cutter head cover 43.

[0564] When the cutting system 20 of the embodiment of the present application is applied to a lawn mower 10, the position adjustment device 50 in the cutting system 20 can adjust the position of the cutting device 40. Driven by the position adjustment device 50, the cutting device 40 can move between a center position and a side-cutting position. When the cutting device 40 is in the side-cutting position, it can trim the area near the edge of the lawn, thereby helping to avoid leaving a large area of ​​uncut lawn at the edge of the lawn. At the same time, the lawn mower 10 protects the cutter disc 42 with the cutter disc cover 43, eliminating the need for an additional bottom protective plate. The cutter disc cover 43 of the lawn mower 10 will not overwhelm the lawn, which helps to improve cutting efficiency and cutting results.

[0565] Furthermore, the position adjustment device 50 can adjust the height of the cutting device 40 so that when the cutting device 40 is in the side-cutting position, the second lower edge 43a of the cutter head cover 43 can be lower than the first lower edge 311 of the side skirt 31 along the vertical direction Y, and the second lower edge 43a of the cutter head cover 43 can be lower than the cutter head 42. A large safety gap exists between the second lower edge 43a of the cutter head cover 43 and the cutter head 42. When the lawn mower 10 is being carried, the operator's palm can rest against the side skirt 31, while the tips of their fingers can rest against the inside of the cutter head cover 43. Protected by the cutter head cover 43, the operator's fingers are mostly located outside the cutter head cover 43, making it difficult for the operator's fingers to touch the cutter head 42. Furthermore, the second lower edge 43a of the cutter head cover 43 is lower than the cutter head 42, making it difficult for the operator's fingers to touch the cutter head 42 even if the operator's fingers pass over the second lower edge 43a of the cutter head cover 43 and rest against the inside of the cutter head cover 43.

[0566] Therefore, when the cutting system 20 of the embodiment of the present application is applied to the lawn mower 10, the lawn mower 10 can not only effectively cut the lawn near the lawn boundary, thereby improving the cutting efficiency and cutting effect, but also adjust the position of the cutting device 40 through the position adjustment device 50, so that the cutting device 40 located at the edge cutting position can meet the safety requirements for use of the lawn mower 10 and will not cause injury to people or animals.

[0567] In some embodiments, the blade cover 43 has a second lower edge 43a. The blade 42 includes a blade 421. Along the vertical direction Y, the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a of the blade cover 43 is greater than 3 mm. The minimum vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the blade cover 43 is the minimum of all vertical distances between different locations on the lower surface of the blade 421 and different locations on the second lower edge 43a of the blade cover 43.

[0568] The greater the vertical distance between the lower surface of the blade 421 and the second lower edge 43a of the cutter head cover 43, the greater the distance between the operator's fingers, which are placed inside the cutter head cover 43, and the cutter head 42 during transport of the lawn mower 10. This reduces the operator's fingers' likelihood of contact with the cutter head 42. When the minimum vertical distance L1 between the lower surface of the blade 421 and the second lower edge 43a is greater than or equal to 3 mm, the operator's fingers are prevented from contacting the cutter head 42 during transport.

[0569] In some possible implementation manners, the cutter head cover 43 has a second lower edge 43a. The cutter head 42 includes a cutter blade 421. In the vertical direction Y, the maximum vertical distance L3 between the lower surface of the cutter blade 421 and the second lower edge 43a of the cutter head cover 43 is less than or equal to 15 mm. The maximum vertical distance between the lower surface of the cutter blade 421 and the second lower edge 43a of the cutter head cover 43 refers to the maximum value of all vertical distances between different positions of the lower surface of the cutter blade 421 and different positions of the second lower edge 43a of the cutter head cover 43.

[0570] When the height of the cutter head 42 is constant, the greater the vertical distance between the lower surface of the cutter blade 421 and the second lower edge 43a of the cutter head cover 43, the smaller the distance between the second lower edge 43a of the cutter head cover 43 and the ground, and the worse the obstacle crossing performance of the lawn mower 10.

[0571] In some possible implementation manners, the height adjustment assembly 60 includes a support arm 62, a driving unit, a support base 61, and a transverse guide 64. The support arm 62 is rotatably connected to the support base 61. The transverse guide 64 is connected to the support arm 62. The driving unit is used to drive the support arm 62 to rotate relative to the support base 61 to adjust the height of the transverse guide 64. The transverse guide 64 is used to be slidably connected with the cutting device 40. The cutting device 40 slides relative to the transverse guide 64, so that the cutting device 40 moves in the length direction of the transverse guide 64.

[0572] When the driving unit drives the support arm 62 to rotate relative to the support base 61, the cutting device 40 also rotates relative to the support base 61, so that the support arm 62 drives the cutting device 40 to adjust the height. The cutting device 40 moves in the length direction of the transverse guide 64, thereby achieving the adjustment of the transverse position of the cutting device 40.

[0573] The mounting structure in which the support arm 62 and the transverse guide 64 are connected with each other is adopted, so that the position adjustment of the cutting device 40 is achieved, and the space occupied by the position adjustment assembly 50 and the cutting device 40 in the machine body is reduced, which is helpful to realize the intelligence and miniaturization of the lawn mower 10.

[0574] The height adjustment and the horizontal adjustment of the cutting device 40 can be realized through the position adjustment assembly 50. Based on this, the cutting device 10 has a larger mowing range and higher working efficiency under the condition that the motion direction and the motion path of the cutting device 10 are unchanged.

[0575] The connection between the driver 41 and the support arm 62 through the transverse guide 64 facilitates reducing the design difficulty of the connection structure between the driver 41 and the support arm 62 and the disassembly difficulty between the driver 41 and the support arm 62, and reduces the processing cost and the maintenance cost.

[0576] In some possible implementation manners, the number of the support arms 62 and the number of the transverse guides 64 are both two. The two support arms 62 are arranged in the vertical direction Y. One end of each of the two support arms 62 is rotatably connected to the support base 61. The other end of each of the two support arms 62 is rotatably connected to a corresponding transverse guide 64. The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. The cutting device 40 is connected to at least one transverse guide 64. For example, the cutting device 40 is slidably connected to at least one transverse guide 64. At least one support arm 62 is connected to the driving unit.

[0577] The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. The support base 61, the two support arms 62, and the two transverse guides 64 can form a four-bar linkage structure relationship, thereby facilitating further improving the connection stability among the support base 61, the support arm 62, and the transverse guide 64 and the position stability of the cutting device 40 during the rotation of the cutting device 40 relative to the support arm 62.

[0578] The embodiment of the present application provides a mower 10, which comprises a machine body 30 and a position adjusting device 50.

[0579] The machine body 30 comprises a side skirt plate 31. The position adjusting device 50 is used for adjusting the position of a cutting device 40 of the mower 10. The position adjusting device 50 comprises a support arm 62, a support base 61, a driving unit, and a transverse guide 64.

[0580] One end of the support arm 62 is rotatably connected to the support base 61. The other end of the support arm 62 is connected to the transverse guide 64. The transverse guide 64 comprises a first end 641 and a second end 642 in the length direction. The first end 641 is located between the second end 642 and the side skirt plate 31. The cutting device 40 is slidably connected to the transverse guide 64. The cutting device 40 comprises a cutter head 42. The cutting device 40 performs a moving action between the first end 641 and the second end 642 of the transverse guide 64 under the action of a driving force. The driving unit is used for driving the support arm 62 to rotate relative to the support base 61 to perform a height adjusting action, so as to adjust the height of the cutting device 40 relative to the ground. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state in which the moving action is performed. The cutting device 40 is used for mowing grass.

[0581] The mower 10 of the embodiment of the application comprises a position adjusting device 50 and a cutting device 40. The position adjusting device 50 can adjust the relative position of the cutting device 40 and the machine body 30. Under the driving action of the position adjusting device 50, the cutting device 40 can move in the lateral direction X of the mower 10, and the mowing range of the mower 10 is expanded without changing the movement path of the mower 10, thereby improving the mowing efficiency.

[0582] The first end 641 of the lateral guide 64 is located between the second end 642 and the side apron 31, and when the cutting device 40 moves to the first end 641 of the lateral guide 64, the cutting device 40 is close to the side apron 31. When the cutting device 40 moves to the second end 642 of the lateral guide 64, the cutting device 40 is away from the side apron 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the lateral guide 64, the adjustment of different cutting positions of the mower 10 in the same path is realized.

[0583] The embodiment of the application provides a mower 10 comprising a machine body 30 and a position adjusting device 50.

[0584] The machine body 30 comprises a side apron 31. The position adjusting device 50 is used to adjust the position of the cutting device 40 of the mower 10. The position adjusting device 50 comprises a support arm 62, a support base 61, a driving unit, a lateral guide 64 and a lateral driving assembly 70.

[0585] One end of the support arm 62 is rotatably connected to the support base 61. The other end of the support arm 62 is connected to the lateral guide 64. The lateral guide 64 comprises a first end 641 and a second end 642 along the length direction. The first end 641 is located between the second end 642 and the side apron 31. The cutting device 40 is slidably connected to the lateral guide 64. The cutting device 40 comprises a cutter head 42. The lateral driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action between the first end 641 and the second end 642 of the lateral guide 64. The driving unit is used to drive the support arm 62 to rotate relative to the support base 61 to perform a height adjusting action to adjust the height of the cutting device 40 relative to the ground. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started, and the second state is a state of performing the moving action. The cutting device 40 is used for mowing.

[0586] The mower 10 of the embodiment of the present application comprises a position adjusting device 50 and a cutting device 40. The position adjusting device 50 can adjust the relative position of the cutting device 40 and the machine body 30. Under the driving action of the position adjusting device 50, the cutting device 40 can move in the lateral direction X of the mower 10, and the cutting range of the mower 10 is expanded without changing the movement path of the mower 10, thereby improving the mowing efficiency.

[0587] The first end 641 of the lateral guide 64 is located between the second end 642 and the side apron 31. When the cutting device 40 moves to the first end 641 of the lateral guide 64, the cutting device 40 is close to the side apron 31. When the cutting device 40 moves to the second end 642 of the lateral guide 64, the cutting device 40 is away from the side apron 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the lateral guide 64, the adjustment of different cutting positions of the mower 10 in the same path is realized.

[0588] The lateral driving assembly 70 drives the cutting device 40 to slide along the lateral guide 64, so that the cutting device 40 moves in the length direction of the lateral guide 64. By driving the cutting device 40 to move laterally through the lateral driving assembly 70, the automatic adjustment of the position of the cutting device 40 is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device 40 are improved.

[0589] The embodiment of the present application provides a mower 10 comprising a machine body 30 and a position adjusting device 50.

[0590] The machine body 30 comprises a side apron 31. The position adjusting device 50 is used to adjust the position of the cutting device 40 of the mower 10. The position adjusting device 50 comprises a support arm 62, a support base 61, a driving unit, a lateral guide 64 and a lateral driving assembly 70.

[0591] The number of the support arms 62 and the transverse guides 64 is two. The two support arms 62 are spaced apart in the vertical direction Y. One end of each of the two support arms 62 is rotatably connected to the support base 61. The other end of each of the two support arms 62 is rotatably connected to a corresponding transverse guide 64. The transverse guide 64 includes a first end 641 and a second end 642 in the length direction. The first end 641 is located between the second end 642 and the side apron 31. The two support arms 62 are relatively fixed; and / or, the two transverse guides 64 are relatively fixed. The cutting device 40 is slidably connected to at least one transverse guide 64. The cutting device 40 includes a cutter head 42. The transverse driving assembly 70 is connected to the cutting device 40 to drive the cutting device 40 to perform a moving action between the first end 641 and the second end 642 of the transverse guide 64. The driving unit is used to drive the two support arms 62 to rotate relative to the support base 61 to adjust the height of the cutting device 40 above the ground. The rotating speed of the cutter head 42 in a first state is greater than or equal to the rotating speed of the cutter head 42 in a second state. The first state is a state after the moving action is completed and the cutting device 40 is started. The second state is a state of performing the moving action. The cutting device 40 is used for mowing grass.

[0592] The lawn mower 10 of the embodiment of the application includes a position adjusting device 50 and a cutting device 40. The position adjusting device 50 can adjust the relative position of the cutting device 40 and the machine body 30. Under the driving action of the position adjusting device 50, the cutting device 40 can move in the transverse direction X of the lawn mower 10, and the mowing range of the lawn mower 10 is expanded without changing the movement path of the lawn mower 10, thereby improving the mowing efficiency.

[0593] The first end 641 of the transverse guide 64 is located between the second end 642 and the side apron 31. When the cutting device 40 moves to the first end 641 of the transverse guide 64, the cutting device 40 is close to the side apron 31. When the cutting device 40 moves to the second end 642 of the transverse guide 64, the cutting device 40 is away from the side apron 31. By moving the cutting device 40 between the first end 641 and the second end 642 of the transverse guide 64, the adjustment of different cutting positions of the lawn mower 10 in the same path is realized.

[0594] The transverse driving assembly 70 drives the cutting device 40 to slide along the transverse guide 64, so that the cutting device 40 moves in the length direction of the transverse guide 64. By driving the cutting device 40 to move in the transverse direction through the transverse driving assembly 70, the automatic adjustment of the position of the cutting device 40 is facilitated, and the adjustment efficiency and accuracy of the position of the cutting device 40 are improved.

[0595] The embodiment of the application provides a lawn mower 10 including a machine body 30 and a position adjusting device 50.

[0596] The machine body 30 comprises a side skirt 31. The position adjusting device 50 is used to adjust the position of the cutting device 40 of the mower 10. The position adjusting device 50 comprises a support arm 62, a support base 61, a driving unit, a transverse guide 64 and a transverse driving assembly 70.

[0597] The support arm 62 comprises a transverse connecting arm 621, a first sub-support arm 622 and a second sub-support arm 623. The first sub-support arm 622 is arranged on one side of the transverse connecting arm 621, and the second sub-support arm 623 is arranged on the other side of the transverse connecting arm 621. The end of the first sub-support arm 622 is rotatably connected with the support base 61. The transverse guide 64 is rotatably connected with the end of the second sub-support arm 623. The transverse guid...

Claims

1. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arms, transverse guides; One end of the support arm is connected to the transverse guide member, and the cutting device is connected to the transverse guide member. The cutting device includes a blade disc. The cutting device performs a moving action along the length direction of the transverse guide member under the action of a driving force. The rotation speed of the blade disc in the first state is greater than or equal to the rotation speed of the blade disc in the second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state of executing the moving action. The blade disc is used for mowing grass.

2. The position adjustment device according to claim 1, characterized in that: The position adjustment device also includes a driving unit, which is used to drive the support arm to move to perform a height adjustment action and adjust the height of the cutting device relative to the ground. The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the third state. The third state is the state for performing the height adjustment action.

3. The position adjustment device according to claim 1, characterized in that: In the second state, the rotation speed of the cutter disc is 0.

4. The position adjustment device according to claim 2, characterized in that: In the third state, the rotation speed of the cutter disc is 0.

5. The position adjustment device according to claim 2, characterized in that: The rotation speed of the cutter disc in the second state is equal to the rotation speed of the cutter disc in the third state.

6. The position adjustment device according to claim 2, characterized in that: The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

7. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, and the cutting device is connected to the transverse guide member. The cutting device includes a cutter disc. The cutting device moves along the length direction of the transverse guide member under the action of a driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device relative to the ground. After the movement action and the height adjustment action are completed and the cutting device is started, the rotation speed of the cutter disc is increased to 1800-3500 rpm when the grass is not stuck, and the cutter disc is used for mowing grass.

8. The position adjustment device according to claim 7, characterized in that: The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

9. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide, and the cutting device is connected to the transverse guide. The cutting device moves along the length direction of the transverse guide under the action of the driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device relative to the ground. When performing the height adjustment action, the cutting device is configured to rotate relative to the support arm so that in the mowing state, the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees. Along the forward direction of the lawn mower, the front end of the cutting surface of the cutting device is lower than the rear end, and the cutting device is used for mowing.

10. The position adjustment device according to claim 9, characterized in that: The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

11. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arms, supports, drive units and transverse guides; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device includes a blade disc. The cutting device performs a moving action along the length direction of the transverse guide under the action of a driving force. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device to the ground. The rotation speed of the blade disc in the first state is greater than or equal to the rotation speed of the blade disc in the second state. The first state is the state after the moving action is completed and the cutting device is started. The second state is the state of executing the moving action. The blade disc is used for mowing grass.

12. The position adjustment device according to claim 11, characterized in that: The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

13. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: Support arms, supports, drive units, transverse guides, and transverse drive assemblies; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide. The cutting device is connected to the transverse guide. The cutting device includes a blade disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device to the ground. The rotation speed of the blade disc in the first state is greater than or equal to the rotation speed of the blade disc in the second state. The first state is the state after the moving action is completed and the cutting device is started. The second state is the state of executing the moving action. The cutting device is used for mowing grass.

14. The position adjustment device according to claim 13, characterized in that: The support arm includes a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side. The end of the first sub-support arm is rotatably connected to the support, the transverse guide is rotatably connected to the end of the second sub-support arm, and the transverse connecting arm is connected to the drive unit.

15. The position adjustment device according to claim 13, characterized in that: The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

16. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one. The at least two support arms are spaced apart in the vertical direction. One end of the at least two support arms is rotatably connected to the support, and the other end of the at least two support arms is rotatably connected to the corresponding transverse guide member. The at least two support arms are fixed relative to each other, and / or the at least two transverse guide members are fixed relative to each other, The cutting device is connected to at least one of the transverse guide members, and the cutting device includes a blade disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide member. The drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. In the first state, the rotation speed of the blade disc is greater than or equal to the rotation speed of the blade disc in the second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state of executing the moving action. The cutting device is used for mowing grass.

17. The position adjustment device according to claim 16, characterized in that: At least one of the at least two support arms includes a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side. The end of the first sub-support arm is rotatably connected to the support, the transverse guide is rotatably connected to the end of the second sub-support arm, and the transverse connecting arm is connected to the driving unit.

18. The position adjustment device according to claim 17, characterized in that: Each of the support arms includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group. The first sub-support arm is arranged on one side of the transverse connecting arm group, and the second sub-support arm is arranged on the other side.

19. The position adjustment device according to claim 16, wherein: At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

20. The position adjustment device according to claim 19, characterized in that: The uppermost support arm is connected to the driving unit.

21. The position adjustment device according to claim 16, wherein: The at least two transverse guide members are slidably connected to the cutting device respectively.

22. The position adjustment device according to claim 16, characterized in that: The at least two support arms are connected to each other; and / or the at least two transverse guide members are connected to each other.

23. The position adjustment device according to claim 16, characterized in that: The support arm is rotatably connected to the support via a horizontal axis. The support arm includes a first connection portion, and the transverse guide member is rotatably connected to the first connection portion.

24. The position adjustment device according to claim 23, characterized in that: The supporting arm includes a second connecting portion, the driving unit is connected to the second connecting portion, and the second connecting portion is located between the first connecting portion and the horizontal axis.

25. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: at least one support arm, a mount, a drive unit, a transverse guide, and a transverse drive assembly; The support arm includes a transverse connecting arm, a first sub-support arm and a second sub-support arm, the first sub-support arm is provided on one side of the transverse connecting arm, and the second sub-support arm is provided on the other side, the end portion of the first sub-support arm is rotatably connected to the support, the transverse guide member is rotatably connected to the end portion of the second sub-support arm, the cutting device is connected to the transverse guide, the cutting device includes a blade disc, the transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide, the driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground, the rotation speed of the blade disc in the first state is greater than or equal to the rotation speed of the blade disc in the second state, the first state is a state after the moving action is completed and the cutting device is started, and the second state is a state of performing the moving action, and the cutting device is used for mowing grass; In each of the support arms, the number of the first sub-support arms is two, and the two first sub-support arms are spaced apart along the length direction of the transverse guide member; In each of the support arms, the number of the second sub-support arms is two. Along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals, and a receiving portion is formed between the two second sub-support arms.

26. The position adjustment device according to claim 25, characterized in that: A portion of the driving unit is located between the two first sub-support arms.

27. The position adjustment device according to claim 25, characterized in that: Each of the support arms includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group. The first sub-support arm is arranged on one side of the transverse connecting arm group, and the second sub-support arm is arranged on the other side.

28. The position adjustment device according to claim 25, characterized in that: At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

29. A position adjustment device for adjusting the position of a cutting device of a lawn mower, characterized in that: The position adjustment device comprises: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and is arranged in a one-to-one correspondence. The at least two support arms are arranged at intervals in the vertical direction. Each of the support arms includes a transverse connecting arm, a first sub-support arm and a second sub-support arm. The first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side. The end of the first sub-support arm of each support arm is rotatably connected to the support, and the end of the second sub-support arm of each support arm is rotatably connected to the corresponding transverse guide member. The at least two support arms are fixed relative to each other, and / or the at least two transverse guide members are fixed relative to each other, The cutting device is connected to at least one of the transverse guide members, and the cutting device includes a blade disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action in the length direction of the transverse guide member. The drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. In the first state, the rotation speed of the blade disc is greater than or equal to the rotation speed of the blade disc in the second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state of executing the moving action. The cutting device is used for mowing grass.

30. The position adjustment device according to claim 29, characterized in that: Each of the support arms includes at least two transverse connecting arms, and the at least two transverse connecting arms constitute a transverse connecting arm group. The first sub-support arm is arranged on one side of the transverse connecting arm group, and the second sub-support arm is arranged on the other side.

31. The position adjustment device according to claim 29, characterized in that: At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

32. The position adjustment device according to claim 29, characterized in that: The transverse connecting arm of the uppermost support arm is connected to the driving unit.

33. The position adjustment device according to claim 29, characterized in that: In each of the support arms, the number of the first sub-support arms is two, and along the length direction of the transverse guide member, the two first sub-support arms are arranged at intervals, and a part of the driving unit is located between the two first sub-support arms.

34. The position adjustment device according to claim 29, characterized in that: In each of the support arms, the number of the second sub-support arms is two. Along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals, and a receiving portion is formed between the two second sub-support arms.

35. The position adjustment device according to claim 29, characterized in that: There are two supports, and in each support arm, there are two first sub-support arms. Along the length direction of the transverse guide member, the two supports are arranged at intervals, and the two first sub-support arms are arranged at intervals. The two first sub-support arms of the support arm are respectively rotatably connected to the two supports, and at least a part of the drive unit is located between the two supports.

36. The position adjustment device according to any one of claims 2 to 35, characterized in that: The driving unit includes a cam, and the cam includes a helical surface; The support arm is connected to the drive unit, and the support arm abuts the spiral surface; and / or the cutting device is connected to the drive unit, and the cutting device abuts the spiral surface; and / or the transverse guide is connected to the drive unit, and the transverse guide abuts the spiral surface.

37. The position adjustment device according to any one of claims 1 to 35, characterized in that: The transverse guide is a circular shaft, and the end of the transverse guide is connected to the end of the support arm.

38. The position adjustment device according to any one of claims 13 to 35, characterized in that: The transverse drive assembly includes a deflection cam, which is connected to the cutting device and is used to drive the cutting device to move on the transverse guide.

39. The position adjustment device according to any one of claims 13 to 35, characterized in that: The transverse drive assembly includes a screw rod and an adapter. The screw rod is threadedly connected to the adapter. The adapter is used to be connected to the cutting device. The screw rod and the adapter are used to drive the cutting device to slide relative to the transverse guide member.

40. The position adjustment device according to any one of claims 13 to 35, characterized in that: The transverse drive assembly includes a telescopic rod and an adapter, the telescopic rod is connected to the adapter, the adapter is used to be connected to the cutting device, and the telescopic rod and the adapter are used to drive the cutting device to slide relative to the transverse guide member.

41. The position adjustment device according to any one of claims 11 to 35, characterized in that: The rotation speed of the cutter disc in the first state is greater than or equal to the state of the cutter disc in the third state, and the third state is a state for performing the height adjustment action.

42. The position adjustment device according to claim 41, characterized in that: In the second state, the rotation speed of the cutter disc is 0.

43. The position adjustment device according to claim 41, characterized in that: In the third state, the rotation speed of the cutter disc is 0.

44. The position adjustment device according to claim 41, characterized in that The rotation speed of the cutter disc in the second state is equal to the rotation speed of the cutter disc in the third state.

45. A lawn mower, characterized in that: Comprising a position adjustment device as claimed in any one of claims 1 to 44.

46. ​​A lawn mower, characterized in that include: body; A position adjustment device for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: Support arms, transverse guides; One end of the support arm is connected to the transverse guide member, and the length direction of the transverse guide member forms an angle α with the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device includes a blade disc. The cutting device performs a moving action along the length direction of the transverse guide member under the action of a driving force. The rotation speed of the blade disc in the first state is greater than or equal to the rotation speed of the blade disc in the second state. The first state is a state after the moving action is completed and the cutting device is started. The second state is a state of executing the moving action. The blade disc is used for mowing grass.

47. A lawn mower, characterized in that: include: body; A position adjustment device for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, and the length direction of the transverse guide member forms an angle α with the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device includes a cutter disc. The cutting device moves along the length direction of the transverse guide member under the action of a driving force, and the driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device above the ground. After the movement action and the height adjustment action are completed and the cutting device is started, the rotation speed of the cutter disc is increased to 1800-3500 rpm when the grass is not stuck, and the cutter disc is used for mowing grass.

48. A lawn mower, characterized in that include: body; A position adjustment device for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: Support arm, transverse guide, drive unit; One end of the support arm is connected to the transverse guide member, and there is an angle α between the length direction of the transverse guide member and the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide member, and the cutting device performs a moving action along the length direction of the transverse guide member under the action of the driving force. The driving unit is used to drive the support arm to move to perform a height adjustment action to adjust the height of the cutting device relative to the ground. When performing the height adjustment action, the cutting device is configured to rotate relative to the support arm so that in the mowing state, the angle between the cutting surface of the cutting device and the working surface is less than 5 degrees. Along the forward direction of the lawn mower, the front end of the cutting surface of the cutting device is lower than the rear end, and the cutting device is used for mowing.

49. A lawn mower, characterized in that: include: body; Position adjustment device; Used to adjust the position of a cutting device of a lawn mower, the position adjusting device comprises: Support arms, supports, drive units and transverse guides; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide. The length direction of the transverse guide forms an angle α with the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide, and the cutting device includes a blade disc. The cutting device moves along the length direction of the transverse guide under the action of a driving force. The driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing grass.

50. The lawn mower according to claim 49, wherein The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

51. A lawn mower, characterized in that: include: body; Position adjustment device; Used to adjust the position of a cutting device of a lawn mower, the position adjusting device comprises: Support arms, supports, drive units, transverse guides, and transverse drive assemblies; One end of the support arm is rotatably connected to the support, and the other end of the support arm is connected to the transverse guide. The length direction of the transverse guide forms an angle α with the forward direction of the lawn mower, and the angle α is greater than 0 degrees and less than 180 degrees. The cutting device is connected to the transverse guide, and the cutting device includes a blade disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to move along the length direction of the transverse guide. The drive unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing grass.

52. The lawn mower according to claim 51, characterized in that The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

53. A lawn mower, characterized in that: include: body; A position adjustment device for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and corresponds one to one. The at least two support arms are spaced apart in the vertical direction. One end of the at least two support arms is rotatably connected to the support, and the other end of the at least two support arms is rotatably connected to the corresponding transverse guide member. The length direction of the transverse guide member and the forward direction of the lawn mower form an angle α, and the angle α is greater than 0 degrees and less than 180 degrees. The at least two support arms are fixed relative to each other, and / or the at least two transverse guide members are fixed relative to each other, The cutting device is connected to at least one of the transverse guide members, and the cutting device includes a cutter disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to move along the length direction of the transverse guide member. The drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing grass.

54. The lawn mower according to claim 53, characterized in that At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

55. A lawn mower, characterized in that: include: body; A position adjustment device for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: at least one support arm, a mount, a drive unit, a transverse guide, and a transverse drive assembly; The support arm includes a transverse connecting arm, a first sub-support arm and a second sub-support arm, the first sub-support arm is provided on one side of the transverse connecting arm, and the second sub-support arm is provided on the other side, the end portion of the first sub-support arm is rotatably connected to the support, the transverse guide member is rotatably connected to the end portion of the second sub-support arm, the length direction of the transverse guide member and the forward direction of the lawn mower form an included angle α, the included angle α is greater than 0 degrees and less than 180 degrees, the cutting device is connected to the transverse guide member, the cutting device includes a blade disc, the transverse drive assembly is connected to the cutting device to drive the cutting device to perform a moving action along the length direction of the transverse guide member, the driving unit is used to drive the support arm to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground, and the cutting device is used for mowing grass; In each of the support arms, the number of the first sub-support arms is two, and the two first sub-support arms are spaced apart along the length direction of the transverse guide member; In each of the support arms, the number of the second sub-support arms is two. Along the length direction of the transverse guide member, the two second sub-support arms are arranged at intervals, and a receiving portion is formed between the two second sub-support arms.

56. The lawn mower according to claim 55, characterized in that The support arm is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or the transverse guide is connected to the drive unit.

57. A lawn mower, characterized in that: include: body; A position adjustment device for adjusting the position of a cutting device of a lawn mower, the position adjustment device comprising: at least two support arms, at least two transverse guides, a support, a drive unit, and a transverse drive assembly; The number of the transverse guide members is consistent with the number of the support arms and is arranged in a one-to-one correspondence. The at least two support arms are arranged at intervals in the vertical direction, each of the support arms includes a transverse connecting arm, a first sub-support arm and a second sub-support arm, the first sub-support arm is arranged on one side of the transverse connecting arm, and the second sub-support arm is arranged on the other side, the end portion of the first sub-support arm of each support arm is rotatably connected to the support, and the end portion of the second sub-support arm of each support arm is rotatably connected to the corresponding transverse guide member, and the length direction of the transverse guide member and the forward direction of the lawn mower form an angle α, and the angle α is greater than 0 degree and less than 180 degrees. The at least two support arms are fixed relative to each other, and / or the at least two transverse guide members are fixed relative to each other, The cutting device is connected to at least one of the transverse guide members, and the cutting device includes a cutter disc. The transverse drive assembly is connected to the cutting device to drive the cutting device to move along the length direction of the transverse guide member. The drive unit is used to drive the at least two support arms to rotate relative to the support to perform a height adjustment action to adjust the height of the cutting device above the ground. The cutting device is used for mowing grass.

58. The lawn mower according to claim 57, characterized in that At least one of the support arms is connected to the drive unit; and / or the cutting device is connected to the drive unit; and / or at least one of the transverse guides is connected to the drive unit.

59. The lawn mower according to any one of claims 46 to 58, characterized in that The cutting device includes a cutter disc, the cutter disc includes a blade, the transverse guide member includes a first end and a second end along the length direction, the cutting device moves between the first end and the second end, and when the cutting device is located at the first end, at least part of the blade is located outside the positive projection of the fuselage toward the ground.

60. The lawn mower according to claim 59, wherein The first end of the transverse guide extends out of the orthographic projection of the fuselage toward the ground.

61. The lawn mower according to any one of claims 46 to 58, characterized in that The cutting device includes a cutter disc, which includes a blade. The transverse guide member includes a first end and a second end along the length direction. The cutting device moves between the first end and the second end. The first end and the second end are located within the orthographic projection of the fuselage toward the ground. The first end is close to the side edge of the orthographic projection of the fuselage toward the ground. When the cutting device is located at the first end, the orthographic projection of the blade toward the ground is located within the orthographic projection of the fuselage toward the ground. The minimum horizontal distance between the outer edge of the blade and the side edge of the orthographic projection of the fuselage is greater than or equal to 0 mm and less than or equal to 50 mm.

62. The lawn mower according to any one of claims 46 to 58, characterized in that The cutting device includes a cutter disc, the cutter disc includes a blade, the transverse guide member includes a first end and a second end along the length direction, the cutting device moves between the first end and the second end, the first end and the second end are located within the orthographic projection of the fuselage facing the ground, the first end is close to the side edge of the orthographic projection of the fuselage facing the ground, and when the cutting device is located at the first end, the orthographic projection of the blade facing the ground is located within the orthographic projection of the fuselage facing the ground; The length of the transverse guide is S, the width of the fuselage is W, 0.3W≤S*sinα≤0.7W, and the vertical distance between the end of the transverse guide and the symmetry plane of the fuselage is less than or equal to 0.35W.

63. The lawn mower according to any one of claims 46 to 58, characterized in that The angle α is between 85 degrees and 95 degrees.

64. The lawn mower according to claim 63, characterized in that The angle α is 90 degrees.

65. The lawn mower according to any one of claims 46 to 58, characterized in that The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is the state after the moving action is completed and the cutting device is started, and the second state is the state of executing the moving action.

66. The lawn mower according to any one of claims 47 to 58, characterized in that The rotation speed of the cutter disc in the first state is greater than or equal to the rotation speed of the cutter disc in the second state. The first state is a state where the moving action is completed and the cutting device is started, and the second state is a state where the moving action is executed. The rotation speed of the cutter disc in the first state is greater than or equal to the state of the cutter disc in the third state, and the third state is a state for performing the height adjustment action.

67. The lawn mower according to claim 66, characterized in that In the second state, the rotation speed of the cutter disc is 0.

68. The lawn mower according to claim 66, characterized in that In the third state, the rotation speed of the cutter disc is 0.

69. The lawn mower according to claim 66, characterized in that The rotation speed of the cutter disc in the second state is equal to the rotation speed of the cutter disc in the third state.

70. A lawn mower, characterized in that: include: a fuselage, including a first lower edge; a cutting system disposed on the fuselage, the cutting system comprising a cutting device and a position adjustment device, the cutting device being connected to the position adjustment device, the position adjustment device being used to drive the cutting device to move laterally so as to move the cutting device between a center position of the fuselage and a side cutting position of the fuselage, and the position adjustment device being used to adjust the height of the cutting device relative to the ground; The cutting device includes a cutter disc and a cutter disc cover, the cutter disc is located in the cutter disc cover, the cutter disc includes a blade, and the cutter disc cover has a second lower edge. When the cutting device is in the edge cutting position, the second lower edge is lower than the first lower edge in the vertical direction, and the second lower edge is lower than the lower surface of the blade.

71. The lawn mower according to claim 70, characterized in that The position adjustment device includes a transverse drive assembly, the transverse drive assembly includes a deflection cam, the deflection cam is connected to the cutting device, the deflection cam is used to drive the cutting device to move laterally, the deflection cam includes a first limiting portion, the fuselage includes a second limiting portion and a third limiting portion, when the cutting device is located at the center position, the first limiting portion cooperates with the second limiting portion, when the cutting device is located at the edge cutting position, the first limiting portion cooperates with the third limiting portion.

72. The lawn mower according to claim 70, characterized in that The fuselage includes a side skirt panel. When the cutting device is in the edge cutting position, the minimum horizontal distance between the outer edge of the blade and the side skirt panel along a direction perpendicular to the side skirt panel is greater than or equal to 10 mm and less than or equal to 50 mm.

73. The lawn mower according to claim 70, characterized in that The fuselage includes a side skirt panel, and when the cutting device is in the center position, the minimum horizontal distance between the outer edge of the blade and the side skirt panel along the direction perpendicular to the side skirt panel is D; When the cutting device is in the edge cutting position of the fuselage, the minimum horizontal distance between the outer edge of the blade and the side skirt along the direction perpendicular to the side skirt is d; The value of D is greater than the value of d.

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