Mowing device and automatic mower

Abstract

The present application relates to a kind of grass cutting equipment and automatic mower, to solve the problem of poor adaptability of cutting assembly when existing grass cutting equipment passes through obstacles and mounds.The lifting mechanism of grass cutting equipment includes the first plate that can be raised or lowered relative to support frame, and the second plate that is lapped above the first plate;The cutting assembly is fixedly connected to the second plate, and the second plate is configured to be adaptively active in the vertical direction and / or in the horizontal direction relative to the first plate when the cutting assembly is subjected to external force;The grass cutting equipment further comprises a reset member, which is configured to enable the second plate to reset after adaptive activity.The grass cutting equipment provided by the present application can adaptively active within a certain range based on the height adjustment function of the cutter head, thereby improving the passability of the grass cutting equipment, avoiding the mounds being flattened, and improving the overall appearance of the lawn.

Description

Technical Field

[0001] This invention patent relates to a lawn mowing device, and more particularly to a lawn mowing device installed on a self-moving device. Background Technology

[0002] 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.

[0003] 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. Summary of the Invention

[0004] This invention provides a lawn mowing device and an automatic lawn mower that addresses existing technologies. When the lawn mowing device comes into contact with obstacles or raised mounds, its lifting structure, in addition to adjusting the height of the cutter head, can also adapt within a certain range, thereby improving the mobility of the lawn mowing device.

[0005] The present invention achieves the above objectives through the following technical solutions.

[0006] This invention proposes a lawn mowing device, comprising:

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] 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.

[0013] In some embodiments, the support member and the guide sleeve are an integral structure.

[0014] In some embodiments, the outer surface of the support member is in any shape of a cone, frustum, pyramid, or truncated cone.

[0015] In some embodiments, the angle formed between the outer surface of the support and its bottom plane ranges from 30° to 70°.

[0016] 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.

[0017] 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.

[0018] The present invention 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 can complete the lawnmower operation of a preset area under the drive of the self-moving device.

[0019] The beneficial effects of this invention are as follows: The lawn mowing device of this invention solves the problem of the lack of adaptive control of the cutting components when they come into contact with obstacles or mounds in existing lawn mowing devices. The lawn mowing device provided by this invention, 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, 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 maintenance costs associated with such wear. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the lawn mowing equipment provided in an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of the internal structure of the lawn mowing equipment provided in an embodiment of the present invention is shown;

[0023] Figure 3 It shows Figure 2 A magnified view of part A from a specific perspective;

[0024] Figure 4 A schematic diagram of the internal structure of a lawnmower undergoing adaptive activities is shown.

[0025] Figure 5 It shows Figure 4 A magnified view of part B from a specific perspective;

[0026] Figure 6 An exploded view of the lifting mechanism is shown;

[0027] Figure 7 A structural schematic diagram of the support component is shown;

[0028] Figure 8 A schematic diagram of an automatic lawnmower provided by an embodiment of the present invention is shown.

[0029] Explanation of icon numbers:

[0030] 100. Lawn mowing equipment;

[0031] 10. Support frame;

[0032] 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;

[0033] 30. Cutting components;

[0034] 40. Reset component;

[0035] 200. Self-moving devices;

[0036] 1000. Automatic lawnmower. Detailed Implementation

[0037] 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.

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0039] Please refer to the following: Figure 1 and Figure 8 This invention 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 the user-set mowing area. The self-moving device 200 can be a tracked vehicle, wheeled vehicle, or other mobile carrier that has 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 is used to complete the mowing operation of a predetermined area along the predetermined path generated by the self-moving device 200, driven by the self-moving device 200.

[0040] 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.

[0041] The structure of the lawn mowing device 100 in this application is described in detail below.

[0042] Please refer to the following: Figures 2 to 5 The present invention 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 that can rise or fall relative to the support frame 10, and a second plate 22 that overlaps the first plate 21. The cutting assembly 30 is fixedly connected to the second plate 22, and the second plate 22 is configured to perform adaptive movements 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 the adaptive movement.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] Please refer to the following: 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.

[0047] Please continue to refer to the following: 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 being drively connected to the first plate 21, and the screw drive assembly 26 being configured to drive the first plate 21 to rise or fall.

[0048] 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.

[0049] Please refer to the following: 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.

[0050] 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.

[0051] Please refer to the following: Figure 3 In some embodiments, the ratio of the diameter of the through hole 221 to the diameter of the guide post 23 is in the range of 1.2 to 2.5.

[0052] 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.

[0053] Please refer to the following: Figure 3 and Figure 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] Please refer to the following: Figure 5 In some embodiments, the outer surface of the support member 28 is in any shape of a cone, frustum, pyramid, or truncated cone.

[0059] 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.

[0060] In some embodiments, the angle between the outer surface of the support member 28 and its bottom plane ranges from 30° to 70°.

[0061] 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.

[0062] 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.

[0063] Please refer to the following: 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.

[0064] 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.

[0065] Please refer to the following: 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.

[0066] 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.

[0067] The present invention also proposes an automatic lawnmower 1000, including a self-moving device 200 and the above-mentioned lawnmower 100; the lawnmower 100 is located on the self-moving device 200 and can complete the lawnmower operation of a preset area under the drive of the self-moving device 200.

[0068] 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.

[0069] In the description of this invention, it should be understood that the terms "length," "width," "depth," "upper," "lower," etc., indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and 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 invention. The terms "installation," "connection," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, an integral connection, or a transmission connection; it can be 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 invention according to the specific circumstances.

[0070] 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 the present invention. In this invention, 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 different embodiments or examples described in this invention, as well as the features of different embodiments or examples.

[0071] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention 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 the present invention, and should all be included within the protection scope of the present invention.

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 first plate and the second plate are in an overlapping relationship, but they are not fixedly connected. The cutting assembly is fixedly connected to the second plate, and the second plate is configured to release its overlap with the first plate and detach from the first plate when the cutting assembly is subjected to an external force, so as to perform adaptive movements relative to the first plate in the vertical direction and / or in the horizontal direction. The lawn mowing device also includes a reset element configured to reset the second plate after adaptive activity to restore the previous overlapping state of the first and second plates.

2. The lawnmowing apparatus 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 lawnmowing apparatus according to claim 2, wherein 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.

5. The lawnmowing apparatus of claim 4, wherein The ratio of the diameter of the through hole to the diameter of the guide post is in the range of 1.2 to 2.

5.

6. 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.

7. The lawn mowing equipment according to claim 6, characterized in that, The support and the guide sleeve are an integral structure.

8. The lawn mowing equipment according to claim 6, characterized in that, The outer surface of the support component is any shape among cone, frustum, pyramid, and truncated cone.

9. The lawn mowing device according to claim 6, characterized in that, The angle between the outer surface of the support and its bottom plane is in the range of 30° to 70°.

10. The lawnmowing apparatus according to claim 6, 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.

11. The lawn mowing equipment 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.

12. 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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