Lawn mowing apparatus and automatic lawn mower

Abstract

The present application relates to a lawn mowing apparatus and an automatic lawn mower, and aims to solve the problem of bad adaptability of cutting assemblies of lawn mowing apparatuses in the prior art when crossing over obstacles and mounds. A lifting / lowering mechanism of the lawn mowing apparatus comprises a first plate member that can move up or down with respect to a support frame, and a second plate member arranged above the first plate member, cutting assemblies being fixedly connected to the second plate member. When the cutting assemblies are under the action of an external force, the second plate member can be configured to adaptively move with respect to the first plate member in the vertical direction and / or in the horizontal direction. The lawn mowing apparatus further comprises a repositioning member, which can be configured to reposition the second plate member that has adaptively moved. While having a function of adjusting the height of a cutterhead, the lifting / lowering structure of the lawn mowing apparatus provided by the present application can further adaptively move within a certain range, so as to improve the trafficability of the lawn mowing apparatus and avoid flattening mounds, thus helping to improve the overall appearance of lawns.

Description

Lawn mowing equipment and automatic lawn mowers

[0001] This application claims priority to Chinese Patent Application No. 2024104810586, filed on April 22, 2024, entitled “Lawn Mowing Equipment and Automatic Lawn Mower”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This patent application relates to a lawn mowing device, and more particularly to a lawn mowing device installed on a self-moving device. Background Technology

[0003] Lawn mowers are widely used in agriculture, horticulture, parks, and other fields due to their advantages such as high-efficiency mowing, safety, reliability, environmental friendliness, and energy saving. Their precise mowing, multi-functionality, and user-friendly design significantly improve lawn maintenance efficiency, making them popular among users.

[0004] In related technologies, lawn mowing equipment can block most obstacles on the lawn through barrier structures, but some smaller obstacles will still remain. These obstacles can collide with the cutting components, easily causing damage to the cutting components and increasing maintenance and replacement costs. In addition, when the lawn mowing equipment passes over mounds, it can easily cause the turf on the top of the mound to be cut flat by the cutting equipment, thereby damaging the quality of the turf and affecting the overall mowing effect. In other words, the lawn mowing equipment in related technologies has poor adaptability in the above working conditions.

[0005] Application content

[0006] This application provides a lawn mowing device and an automatic lawn mower in light of the prior art. When the lawn mowing device comes into contact with an obstacle or a raised mound, its lifting structure, in addition to having the function of adjusting the height of the cutter head, can also adapt within a certain range, thereby improving the passability of the lawn mowing device.

[0007] This application achieves the above objectives through the following technical solutions.

[0008] This application discloses a lawn mowing device, comprising:

[0009] The device includes a support frame, a lifting mechanism mounted on the support frame, and a cutting assembly mounted on the lifting mechanism. The lifting mechanism is configured to move the cutting assembly up and down. The lifting mechanism includes a first plate that can rise or fall relative to the support frame, and a second plate that overlaps the first plate. The cutting assembly is fixedly connected to the second plate, which is configured to adapt to vertical and / or horizontal movements relative to the first plate when the cutting assembly is subjected to an external force. The mowing device also includes a reset member configured to reset the second plate after the adaptive movement.

[0010] In some embodiments, the lifting mechanism further includes a guide column mounted on the support frame, the guide column passing through the first plate and the second plate, the first plate and the second plate being able to rise or fall along the length direction of the guide column.

[0011] In some embodiments, the lifting mechanism further includes at least one sensing component, the sensing component including a magnet and a magnetic sensor for sensing the magnet, the magnet moving up and down with the first plate, the magnetic sensor being stationary relative to the support frame, the magnetic sensor cooperating with the magnet to limit the range of the cutting component moving up and down with the first plate.

[0012] In some embodiments, the magnetic sensor is disposed below the mounting plate, the magnetic sensor corresponds to the highest ground clearance of the cutting assembly, and the magnetic sensor cooperates with the magnet to limit the cutting assembly from rising with the first plate from exceeding the highest ground clearance.

[0013] In some embodiments, a limiting member is fixedly installed below the mounting plate, the limiting member extending from the bottom of the mounting plate toward the second plate, the second plate rising to abut against the limiting member, the limiting member restricting the second plate from being higher than the bottom of the limiting member and / or restricting the adaptive movement of the second plate in a high position.

[0014] In some embodiments, the lifting mechanism further includes: a mounting plate installed on the top of the guide column, and the mounting plate being located above the second plate; a lifting motor installed on the mounting plate; and a screw drive assembly connected to the output end of the lifting motor, the screw drive assembly being drively connected to the first plate, and the screw drive assembly being configured to drive the first plate to rise or fall.

[0015] In some embodiments, the second plate is provided with a through hole, the guide post is inserted through the through hole, and there is a movable gap between the inner wall of the through hole and the outer wall of the guide post.

[0016] In some embodiments, the ratio of the diameter of the through hole to the diameter of the guide post ranges from 1.2 to 2.5.

[0017] In some embodiments, the first plate is provided with a guide sleeve, which is sleeved on the outside of the guide post, and a support member is provided above the guide sleeve, the cross-section of the support member gradually decreasing from bottom to top; the second plate is provided with a kit, which is sleeved on the outside of the support member, and the inner surface contour of the kit is adapted to the outer contour of the support member.

[0018] In some embodiments, the support member and the guide sleeve are an integral structure.

[0019] In some embodiments, the outer surface of the support member is in any shape of a cone, frustum, pyramid, or truncated cone.

[0020] In some embodiments, the angle formed between the outer surface of the support and its bottom plane ranges from 30° to 70°.

[0021] In some embodiments, the top of the support member has an upwardly extending step, and the inner surface of the kit has an extension structure adapted to the step.

[0022] In some embodiments, the reset element is an elastic element, one end of which is connected to the first plate and the other end of which is connected to the second plate. The elastic element is configured to allow the second plate to reset after movement.

[0023] This application also proposes an automatic lawnmower, including a self-moving device and the above-mentioned lawnmower; the lawnmower is located on the self-moving device and is able to complete the lawnmower operation of a preset area under the drive of the self-moving device.

[0024] The beneficial effects of this application are as follows: The lawn mowing equipment of this application solves the problem in the prior art where the cutting components of lawn mowing equipment lack adaptive control when they come into contact with obstacles or mounds. The lawn mowing equipment provided by this application, in addition to having the function of adjusting the height of the cutter head, can also adapt within a certain range, thereby improving the passability of the lawn mowing equipment, preventing mounds from being flattened, and contributing to improving the overall aesthetics of the lawn. Furthermore, this adaptive activity reduces machine wear caused by collisions between the cutting components and obstacles, reducing the maintenance costs resulting from such wear. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 shows a schematic diagram of the lawn mowing equipment provided in an embodiment of this application;

[0027] Figure 2 shows a schematic diagram of the internal structure of the lawn mowing equipment provided in the embodiments of this application;

[0028] Figure 3 shows an enlarged schematic diagram of part A from the perspective of Figure 2;

[0029] Figure 4 shows a schematic diagram of the internal structure of the lawn mowing equipment undergoing adaptive activities;

[0030] Figure 5 shows an enlarged schematic diagram of part B from the perspective of Figure 4;

[0031] Figure 6 shows an exploded view of the lifting mechanism;

[0032] Figure 7 shows a schematic diagram of the support structure;

[0033] Figure 8 shows a schematic diagram of an automatic lawnmower provided in an embodiment of this application.

[0034] Explanation of icon numbers:

[0035] 100. Lawn mowing equipment;

[0036] 10. Support frame;

[0037] 20. Lifting mechanism; 21. First plate; 22. Second plate; 221. Through hole; 23. Guide post; 24. Mounting plate; 25. Lifting motor; 26. Screw drive assembly; 261. Screw body; 262. Screw nut; 27. Guide sleeve; 28. Support component; 281. Step section; 29. ​​Kit; 50. Sensing assembly; 51. Magnet; 52. Magnetic sensor; 53. Limiting component;

[0038] 30. Cutting components;

[0039] 40. Reset component;

[0040] 200. Self-moving devices;

[0041] 1000. Automatic lawnmower. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0043] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0044] Referring to Figures 1 and 8, this application proposes a lawn mowing device 100 and an automatic lawnmower 1000. The lawn mowing device 100 can be easily installed on a self-moving device 200. The self-moving device 200 generates a predetermined mowing path based on a user-defined mowing area. The self-moving device 200 can be a tracked vehicle, a wheeled vehicle, or other mobile carrier with a mounting position for the lawn mowing device 100. The self-moving device 200 and the lawn mowing device 100 are combined to form the automatic lawnmower 1000 to complete the automatic mowing work. The lawn mowing device 100, driven by the self-moving device 200, completes the mowing operation in a predetermined area along the predetermined path generated by the self-moving device 200.

[0045] In related technologies, lawn mowing equipment 100 is typically equipped with a lifting mechanism 20, and the cutting component 30 is fixedly installed on the lifting mechanism 20. The operator can adjust the height of the cutting component 30 relative to the ground according to the height of the grass before cutting and the desired mowing effect. When there are obstacles or mounds on the lawn, and the height of these obstacles or mounds exceeds the preset cutting height, the cutting component 30 of the lawn mowing equipment 100 will collide with the obstacles and mounds. On the one hand, the machine itself is easily damaged; on the other hand, the lawn is flattened, which damages the quality of the lawn and destroys its overall aesthetics. Based on this, the applicant has conducted in-depth research to solve the problem of poor adaptability of the cutting component 30 when the lawn mowing equipment 100 passes through obstacles and mounds.

[0046] The structure of the lawn mowing device 100 in this application is described in detail below.

[0047] Referring to Figures 2 to 5, this application proposes a lawn mowing device 100, including a support frame 10, a lifting mechanism 20 mounted on the support frame 10, and a cutting assembly 30 mounted on the lifting mechanism 20. The lifting mechanism 20 is configured to drive the cutting assembly 30 to rise and fall. The lifting mechanism 20 includes a first plate 21 capable of rising or falling relative to the support frame 10, and a second plate 22 overlapping the first plate 21. The cutting assembly 30 is fixedly connected to the second plate 22, and the second plate 22 is configured to undergo adaptive movement relative to the first plate 21 in the vertical direction and / or horizontal direction when the cutting assembly 30 is subjected to an external force. The lawn mowing device 100 also includes a reset member 40, which is configured to reset the second plate 22 after adaptive movement.

[0048] The lifting mechanism 20 adopts a double-plate design. When the height of the lifting mechanism 20 is adjusted, both the first plate 21 and the second plate 22 overlapping it change height relative to the ground. The cutting component 30 is fixedly connected to the second plate 22, and the two can be regarded as a whole. The first plate 21 and the second plate 22 are in an overlapping relationship, that is, they are not fixedly connected. When the cutting component 30 comes into contact with a mound or obstacle, the force generated by the collision will lift the second plate 22 and the cutting component 30 upward as a whole, thereby temporarily releasing the overlapping relationship between the first plate 21 and the second plate 22. This allows the second plate 22 to detach from the first plate 21 and undergo adaptive movement in the vertical and / or horizontal directions relative to the first plate 21. The trajectory of the adaptive movement depends on the direction of the force generated by the collision.

[0049] The lawn mowing device 100 also has a reset member 40, which is connected between the first plate 21 and the second plate 22. The reset member 40 has a restraining function. When the first plate 21 and the second plate 22 are separated, the reset member 40 can ensure that the second plate 22 can adapt to the environment within an acceptable range. After the lawn mowing device 100 passes over an obstacle or mound, the reset member 40 can restore the previous overlapping state of the first plate 21 and the second plate 22, thereby restoring the preset mowing height and ensuring that the cutting height of the target lawn is consistent.

[0050] Thus, this embodiment solves the problem of poor adaptability of the cutting component 30 when the lawn mower 100 passes through obstacles and mounds by setting the second plate 22 to be movable relative to the first plate 21, and by limiting the reset component 40 and applying the reset function. The improved lawn mower 100 has increased durability, which helps to reduce maintenance costs, protect the quality of the lawn, and bring a better user experience.

[0051] Referring to Figure 2, in some embodiments, the lifting mechanism 20 further includes a guide post 23 installed on the support frame 10. The guide post 23 passes through the first plate 21 and the second plate 22, allowing the first plate 21 and the second plate 22 to rise or fall along the length of the guide post 23. The guide post 23, passing through the first plate 21 and the second plate 22 and installed on the support frame 10 of the mowing equipment 100, serves to guide the first plate 21 and the second plate 22 during lifting and lowering movements, and during adaptive movements of the first plate 21, ensuring that the first plate 21 and the second plate 22 move along the guide post 23 and preventing misalignment during movement. Multiple guide posts 23 can be provided according to the spatial arrangement of the mowing equipment 100. The symmetrical distribution of multiple guide posts 23 helps reduce swaying and rocking of the first plate 21 and the second plate 22 during lifting and lowering movements or adaptive movements, thereby maintaining balance and providing strong support for the long-term stable operation of the mowing equipment 100.

[0052] Please refer to Figure 2. In some embodiments, the lifting mechanism 20 further includes a mounting plate 24 mounted on the top of the guide column 23, and the mounting plate 24 is located above the second plate 22; a lifting motor 25 mounted on the mounting plate 24; and a screw drive assembly 26 connected to the output end of the lifting motor 25. The screw drive assembly 26 is drively connected to the first plate 21 and is configured to drive the first plate 21 to rise or fall.

[0053] In the lifting mechanism 20, a mounting plate 24 is installed on the top of the guide column 23. The mounting plate 24 and the lifting motor 25 located on the mounting plate 24 are situated above the second plate 22. The lead screw drive assembly 26 includes a lead screw body 261 and a lead screw nut 262. The lead screw nut 262 is fixedly connected to the first plate 21. The bottom part of the lead screw body 261 is fixed to the support frame 10, and the top part is connected to the mounting plate 24 and passes through the lead screw nut 262. The lead screw nut 262 has an internal thread, and the lead screw body 261 has an external thread that matches the lead screw nut 262. The lifting motor 25 is driven by the lead screw body 261. When the lifting motor 25 operates, the lead screw drive assembly 26 can convert rotational motion into linear motion, driving the first plate 21 to move up and down along the lead screw body 261. In other words, the lifting motor 25 can drive the height of the first plate 21 relative to the ground, thereby adjusting the height of the cutting assembly 30 to adapt to lawns of different heights or to handle obstacles of different heights.

[0054] Referring to Figure 4, in some embodiments, the lifting mechanism 20 further includes at least one sensing component 50, which includes a magnet 51 and a magnetic sensor 52 for sensing the magnet 51. The magnet 51 moves up and down with the first plate 21, and the magnetic sensor 52 is stationary relative to the support frame 10. The magnetic sensor 52 cooperates with the magnet 51 to limit the range of movement of the cutting component 30 with the first plate 21.

[0055] The cutting assembly 30 is typically installed below the base of the lawn mower 100. If the cutting assembly 30 rises too high with the first plate 21, it may damage the base. If the cutting assembly 30 falls too low with the first plate 21, it may come into direct contact with the grass, causing long-term friction with the ground, which can damage the lawn and affect its lifespan. The magnetic sensor 52 is fixedly installed at a high or low position on the lifting mechanism 20. The magnet 51 is positioned opposite the magnetic sensor 52 and can rise and fall with the first plate 21. When the magnet 51 reaches the same height as the magnetic sensor 52, the magnetic sensor 52 transmits a stop signal to the lifting motor 25 to prevent damage to the lawn mower 100 caused by the first plate 21 rising or falling beyond its range.

[0056] In some embodiments, the magnetic sensor 52 is disposed below the mounting plate 24. The magnetic sensor 52 corresponds to the highest ground clearance of the cutting assembly 30. The magnetic sensor 52 cooperates with the magnet 51 to limit the cutting assembly 30 from rising with the first plate 21 to not exceeding the highest ground clearance.

[0057] Specifically, the mounting plate 24 is located at a high position of the lifting mechanism 20 and is stationary relative to the support frame 10. The magnetic sensor 52 can be fixedly connected to the bottom of the mounting plate 24 stationary relative to the support frame 10. The magnet 51 is set at a position that matches the magnetic sensor 52 and can rise and fall with the first plate 21. When the magnet 51 rises to the height of the magnetic sensor 52, the magnetic sensor 52 transmits a stop signal to the lifting motor 25, preventing the first plate 21 from continuing to rise. This helps to protect the lawn mowing equipment 100 from being damaged by the cutting component 30.

[0058] Referring to Figures 4 to 6, in some embodiments, a limiting member 53 is fixedly installed below the mounting plate 24. The limiting member 53 extends from the bottom of the mounting plate 24 toward the second plate 22. The second plate 22 rises to abut against the limiting member 53. The limiting member 53 restricts the second plate 22 from being higher than the bottom of the limiting member 53 and / or restricts the adaptive activities of the second plate 22 in a high position.

[0059] The lifting mechanism 20 has a limiting member 53 at the bottom of the mounting plate 24, which has the following two functions. First, the limiting member 53 acts as a structural limiter, preventing the second plate 22 from rising further when it rises to abut against the bottom of the limiting member. This provides an additional protection mechanism for the bottom shell of the mowing equipment 100. Even if the sensing component 50 that controls the lifting motor 25 to stop fails, the bottom shell can still be protected from damage by the cutting component 30. Second, when the second plate 22 abuts against the limiting member 53 at a high position, the limiting member 53 can limit the swaying amplitude of the second plate 22 during its adaptive movement at a high position, further preventing the bottom shell from being damaged by the cutting component 30 due to adaptive movement.

[0060] Referring to Figure 3, in some embodiments, the second plate 22 is provided with a through hole 221, and the guide post 23 passes through the through hole 221. There is a movable gap between the inner wall of the through hole 221 and the outer wall of the guide post 23.

[0061] When the cutting component 30 of the lawn mower 100 collides with an obstacle or mound in the lawn, the impact force acts on the cutting component 30 and the second plate 22, causing the cutting component 30 and the second plate 22 to move vertically upward along the guide post 23. When the second plate 22 is completely detached from the first plate 21, in addition to the vertical upward movement, the second plate 22 also has a horizontal range of motion. The size of the horizontal range of motion is determined by the gap between the inner wall of the through hole 221 on the second plate 22 and the outer wall of the guide post 23. This design provides the lawn mower 100 with adaptive horizontal movement, further improving the lawn mower 100's maneuverability when the cutting component 30 collides with an obstacle.

[0062] Referring to Figure 3, in some embodiments, the ratio of the diameter of the through hole 221 to the diameter of the guide post 23 ranges from 1.2 to 2.5.

[0063] To improve the adaptability of the lawn mower 100, the clearance between the inner wall of the through hole 221 on the second plate 22 and the outer wall of the guide post 23 should not be too small. When the ratio of the diameter of the through hole 221 to the diameter of the guide post 23 is less than 1.2, the horizontal range of motion of the second plate 22 is too small, limiting the flexibility of the lawn mower 100. When the ratio of the diameter of the through hole 221 to the diameter of the guide post 23 is greater than 2.5, the horizontal range of motion of the second plate 22 is too large, resulting in excessive swing amplitude of the cutting component 30, which reduces the stability of the lawn mower 100 and may even exceed the cutting range of the cutting component 30, thereby damaging the outer shell of the lawn mower 100. Therefore, the optimal ratio of the diameter of the through hole 221 of the second plate 22 to the diameter of the guide post 23 is controlled between 1.2 and 2.5. Specifically, the ratio can be 1.4, 1.6, 2.0, etc., or any value within the range of the ratio.

[0064] Referring to Figures 3 and 5, in some embodiments, the first plate 21 is provided with a guide sleeve 27, which is sleeved on the outside of the guide post 23. A support member 28 is provided above the guide sleeve 27, and the cross-section of the support member 28 gradually decreases from bottom to top.

[0065] The second plate 22 is provided with a kit 29, which is fitted onto the outside of the support 28, and the inner surface contour of the kit 29 is adapted to the outer contour of the support 28.

[0066] The guide sleeve 27 cooperates with the guide post 23. The guide sleeve 27 ensures that the first plate 21 moves along the guide post 23 during the lifting process, avoiding mutual friction between the first plate 21 and the guide post 23 during the lifting process. The outer side of the support member 28 above the guide sleeve 27 and the inner surface contour of the kit 29 of the second plate 22 are adapted to achieve the overlapping relationship between the second plate 22 and the first plate 21, so that the second plate 22 can be supported by the first plate 21 to move upward until the cutting component 30 collides with the obstacle or mound of the lawn, and the second plate 22 detaches from the first plate 21. After overcoming the obstacle, the second plate 22 and the cutting equipment installed on the second plate 22 move downward along the guide post 23 under the action of gravity and the action of the reset member 40 until the overlapping state of the second plate 22 and the first plate 21 is restored.

[0067] The support member 28 has a cross-sectional area that gradually decreases from bottom to top, serving as a guide. This makes it easier for the assembly 29 to overlap under the guidance of the support member 28 during the descent of the second plate 22. This avoids the situation where the second plate 22 cannot be reset due to misalignment between it and the first plate 21.

[0068] In some embodiments, the support member 28 and the guide sleeve 27 are an integral structure. The support member 28 and the guide sleeve 27 can be integrally cast or integrally formed by processes such as welding.

[0069] Referring to Figure 5, in some embodiments, the outer surface of the support member 28 is any of the shapes of a cone, frustum, pyramid, or truncated pyramid.

[0070] The shape of the outer surface of the support member 28 is an important factor affecting the overlap and separation of the first plate 21 and the second plate 22. A support member 28 with a conical or frustum-shaped outer surface can minimize friction during the fitting process between the support member 28 and the kit 29, resulting in smoother lifting and lowering of the second plate 22 and improving the flexibility of the equipment. A support member 28 with a pyramidal or frustum-shaped outer surface has better anti-displacement performance, making it less susceptible to minor vibrations when the first plate 21 and the second plate 22 are overlapped, thus improving the stability of the equipment. Designers can flexibly choose any shape of the support member 28—conical, frustum-shaped, pyramidal, or frustum-shaped—to achieve optimal mechanical performance, without any limitations.

[0071] In some embodiments, the angle between the outer surface of the support member 28 and its bottom plane ranges from 30° to 70°.

[0072] The angle formed between the outer surface of the support member 28 and its bottom plane determines the ease with which the support member 28 and the kit 29 can overlap or separate. The larger the angle, for example, 60°, the more stable the overlap between the second plate 22 and the first plate 21, meaning that the cutting assembly 30 needs to be subjected to a larger force to make the kit 29 detach from or overlap with the support member 28.

[0073] Conversely, the smaller the included angle, such as 45°, the more flexible the overlap between the second plate 22 and the first plate 21. That is, the cutting component 30 can be subjected to a small force to make the kit 29 detach from or overlap with the support 28. This small included angle design is particularly suitable for working environments that require greater flexibility and quick adjustment, such as scenarios that require frequent obstacle crossing or adaptation to different lawn conditions.

[0074] Referring to Figure 5, in some embodiments, the top of the support member 28 has an upwardly extending step 281, and the inner surface of the kit 29 has an extension structure adapted to the step 281.

[0075] The upward-extending step 281 restricts the horizontal movement of the kit 29 to some extent, preventing the kit 29 from separating from the support 28 due to minor vibrations generated during operation when the cutting component 30 is not in contact with an obstacle, thus increasing the structural stability of the equipment.

[0076] Referring to Figure 2, in some embodiments, the reset member 40 is an elastic member, one end of which is connected to the first plate 21 and the other end of which is connected to the second plate 22. The elastic member is configured to allow the second plate 22 to reset after an activity occurs.

[0077] Specifically, both the first plate 21 and the second plate 22 are provided with elastic element mounting positions. The elastic force of the elastic element affects the reset speed of the second plate 22 after it separates from the first plate 21. By balancing the elastic force of the elastic element and the equipment structure, the designers can ensure that the reset speed of the second plate 22 is moderate, which can both restore quickly and maintain stability.

[0078] This application also proposes an automatic lawnmower 1000, including a self-moving device 200 and the aforementioned lawnmower 100; the lawnmower 100 is located on the self-moving device 200 and is able to complete the lawnmower operation of a preset area under the drive of the self-moving device 200.

[0079] The self-moving device 200 is a mobile vehicle that can adopt various designs, such as tracked vehicles or wheeled vehicles, enabling it to move freely in different terrains and environmental conditions. The self-moving device 200 possesses precise positioning technologies, such as a global positioning system and an inertial navigation system, allowing it to accurately locate itself. The self-moving device 200 can also be equipped with an obstacle avoidance system, such as ultrasonic obstacle avoidance, visual obstacle avoidance, and infrared obstacle avoidance, enabling it to avoid obstacles and move along a preset path during operation. The self-moving device 200 is equipped with the lawnmower 100 described in the above embodiments, which, driven by the self-moving device 200, can efficiently clean the lawn in a designated area. The entire cleaning process requires no manual operation, possessing the ability to independently complete lawnmowing tasks, reducing manpower input, and enabling fast and efficient lawnmowing in various scenarios.

[0080] In the description of this application, it should be understood that the terms "length," "width," "depth," "upper," "lower," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a transmission connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0081] Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as referring to specific or particular structures. The description of "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this application, as well as the features of different embodiments or examples.

[0082] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A lawn mowing device, characterized in that, It includes a support frame, a lifting mechanism mounted on the support frame, and a cutting assembly mounted on the lifting mechanism, wherein the lifting mechanism is configured to drive the cutting assembly to lift and lower. The lifting mechanism includes a first plate that can rise or fall relative to the support frame, and a second plate that overlaps the first plate. The cutting assembly is fixedly connected to the second plate, and the second plate is configured to be able to adapt to the first plate in the vertical direction and / or in the horizontal direction when the cutting assembly is subjected to external force. The lawn mowing device also includes a reset element configured to allow the second plate to reset after adaptive activity.

2. The lawn mowing equipment according to claim 1, characterized in that, The lifting mechanism also includes a guide column installed on the support frame. The guide column passes through the first plate and the second plate, and the first plate and the second plate can rise or fall along the length direction of the guide column.

3. The lawn mowing equipment according to claim 2, characterized in that, The lifting mechanism also includes: A mounting plate is installed on the top of the guide post, and the mounting plate is located above the second plate. A lifting motor mounted on the mounting plate; A lead screw drive assembly is connected to the output end of the lifting motor. The lead screw drive assembly is driven to the first plate. The lead screw drive assembly is configured to drive the first plate to rise or fall.

4. The lawn mowing equipment according to claim 3, characterized in that, The lifting mechanism further includes at least one sensing component, which includes a magnet and a magnetic sensor for sensing the magnet. The magnet moves up and down with the first plate, and the magnetic sensor is stationary relative to the support frame. The magnetic sensor cooperates with the magnet to limit the range of the cutting component's movement with the first plate.

5. The lawn mowing equipment according to claim 4, characterized in that, The magnetic sensor is located below the mounting plate and corresponds to the highest ground clearance of the cutting assembly. The magnetic sensor cooperates with the magnet to limit the cutting assembly from rising above the highest ground clearance as the first plate rises.

6. The lawn mowing equipment according to claim 3, characterized in that, A limiting member is fixedly installed below the mounting plate. The limiting member extends from the bottom of the mounting plate toward the second plate. The second plate rises to abut against the limiting member. The limiting member restricts the second plate from being higher than the bottom of the limiting member and / or restricts the adaptive movement of the second plate in a high position.

7. The lawn mowing equipment according to claim 2, characterized in that, The second plate has a through hole, and the guide post passes through the through hole. There is a movable gap between the inner wall of the through hole and the outer wall of the guide post.

8. The lawn mowing equipment according to claim 7, characterized in that, The ratio of the diameter of the through hole to the diameter of the guide post ranges from 1.2 to 2.

5.

9. The lawn mowing equipment according to claim 2, characterized in that, The first plate is provided with a guide sleeve, which is sleeved on the outside of the guide post. A support member is provided above the guide sleeve, and the cross-section of the support member gradually decreases from bottom to top. The second plate is provided with a kit, which is fitted onto the outside of the support member, and the inner surface contour of the kit is adapted to the outer contour of the support member.

10. The lawn mowing equipment according to claim 9, characterized in that, The support and the guide sleeve are an integral structure.

11. The lawn mowing equipment according to claim 9, characterized in that, The outer surface of the support component is any shape among cone, frustum, pyramid, and truncated cone.

12. The lawn mowing equipment according to claim 9, characterized in that, The angle between the outer surface of the support and its bottom plane is in the range of 30° to 70°.

13. The lawnmower according to claim 9, characterized in that, The top of the support has an upwardly extending step, and the inner surface of the kit has an extension structure adapted to the step.

14. The lawnmower according to claim 1, characterized in that, The reset element is an elastic element, one end of which is connected to the first plate and the other end of which is connected to the second plate. The elastic element is configured to allow the second plate to reset after movement.

15. An automatic lawnmower, characterized in that, It includes a self-moving device and a lawn mowing device as described in any one of claims 1 to 11; the lawn mowing device is located on the self-moving device and is capable of completing lawn mowing operations in a preset area under the drive of the self-moving device.

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