Driving wheel assembly and grassland operation equipment

Abstract

The embodiment of the utility model provides a driving wheel assembly and grassland operation equipment, the driving wheel assembly comprises a tire and an anti-skid piece, the anti-skid piece is fixed to the tire, the anti-skid piece comprises a plurality of protruding parts, the protruding parts are distributed at intervals in the circumferential direction of the tire, and the protruding parts are arranged in the radial direction of the tire. Each protruding part protrudes out of the outer surface of the maximum outer diameter of the tire, and the size of each protruding part in the axial direction of the tire is smaller than the axial size of the tire. According to the application, the anti-slip piece is arranged in the driving wheel assembly, so that the grassland operation equipment can be prevented from slipping when working on a complex road surface, and the working efficiency of the grassland operation equipment is further improved.

Description

Technical Field

[0001] This application relates to the field of grassland cleaning, and particularly to a drive wheel assembly and a grassland operation device. Background Art

[0002] A grassland operation device is a mechanical device capable of automatically performing mowing operations. It is generally used for trimming and maintaining lawns, which can save manpower and time. Grassland operation devices are generally used for outdoor operations to trim lawns, thus greatly reducing the labor intensity of people. However, in some complex outdoor environments, such as uneven or slippery road surfaces, the existing grassland operation devices will have insufficient grip and slip, which will affect the working efficiency of the grassland operation devices. How to improve the working efficiency of grassland operation devices in complex environments is an urgent problem to be solved currently. Summary of the Utility Model

[0003] An embodiment of this application provides a drive wheel assembly and a grassland operation device. By providing an anti-slip member in the drive wheel assembly, it is possible to avoid slipping when the grassland operation device operates on a complex road surface, thereby improving the working efficiency of the grassland operation device.

[0004] In a first aspect, an embodiment of this application provides a drive wheel assembly, including a tire and an anti-slip member. The anti-slip member is fixed to the tire. The anti-slip member includes a plurality of protruding portions, and the plurality of protruding portions are spaced apart along the circumferential direction of the tire. Along the radial direction of the tire, each protruding portion protrudes from the outer surface of the maximum outer diameter of the tire, and the dimension of each protruding portion along the axial direction of the tire is smaller than the axial dimension of the tire.

[0005] By providing an anti-slip member including a plurality of protruding portions on the circumferential side of the tire of the drive wheel assembly, wherein the protruding portions protrude from the outer surface of the maximum outer diameter of the tire, and the dimension of the protruding portions along the axial direction of the tire is smaller than the axial dimension of the tire, when the drive wheel assembly rolls on a lawn road surface, each protruding portion can be inserted into the lawn road surface and generate a strong acting force, thereby enhancing the grip of the drive wheel assembly and effectively avoiding slipping of the drive wheel assembly on the lawn road surface.

[0006] In a possible implementation manner, in the axial direction of the tire, the tire includes a first part and a second part distributed on both sides of the plurality of protruding portions. By arranging the plurality of protruding portions between the first part and the second part of the tire, when the drive wheel assembly rolls on a lawn road surface, the acting force received by the cooperation structure of the tire and the anti-slip member is evenly distributed, which is beneficial to the smooth movement of the drive wheel assembly while enhancing the grip.

[0007] In a possible implementation, a part of the plurality of protrusions is a first protrusion, and another part of the plurality of protrusions is a second protrusion. In the axial direction of the tire, the first protrusion and the second protrusion are respectively located on opposite sides of the tire. The numbers of the first protrusion and the second protrusion are both plural, and they are both spaced apart along the circumferential direction of the tire. By making the first protrusion and the second protrusion respectively located on opposite sides of the tire along its axial direction, when the drive wheel assembly rolls on a lawn road surface, both the first protrusion and the second protrusion are inserted into the lawn road surface and generate acting forces, so that the acting forces received by the matching structure of the tire and the anti-slip member are evenly distributed. While improving the grip, it is beneficial to the smooth movement of the drive wheel assembly.

[0008] In a possible implementation, in the axial direction of the tire, the plurality of protrusions are located on the same side of the tire. By making the protrusions all protrude from the outer surface of the maximum outer diameter of the tire, that is, the protrusions protrude from the outer surfaces of the first protrusion member and the second protrusion member along the radial direction of the tire, it can be ensured that when the drive wheel assembly rolls on a lawn road surface, each protrusion can be inserted into the lawn road surface and generate a strong acting force, thereby improving the grip of the drive wheel assembly and effectively preventing the drive wheel assembly from slipping on the lawn road surface.

[0009] In a possible implementation, the anti-slip member includes an annular mounting portion, and the protrusions protrude from the outer peripheral surface of the mounting portion. The mounting portion is detachably connected to the tire. By protruding the protrusions from the outer peripheral surface of the mounting portion and detachably connecting the mounting portion to the tire, the protrusions can be selectively assembled in the vicinity of the tire along the radial direction of the tire according to actual needs, thereby providing a stronger grip for the drive wheel assembly and preventing the drive wheel assembly from slipping on the lawn road surface.

[0010] In a possible implementation, the drive wheel assembly further includes a motor. The rotor of the motor abuts against the hub of the drive wheel assembly to rotate the hub. A front cover is provided on the side of the tire away from the motor. The mounting portion is detachably connected to the front cover. By sequentially connecting the hub body, the front cover and the mounting portion, the protrusions can be conveniently assembled in the vicinity of the tire along the radial direction of the tire, thereby providing a stronger grip for the drive wheel assembly and preventing the drive wheel assembly from slipping on the lawn road surface.

[0011] In a possible implementation, a plurality of protruding members are convexly provided on the outer peripheral surface of the tire. The plurality of protruding members are spaced apart along the circumferential direction of the tire. The protruding members and the protruding portion are arranged along the axial direction of the tire. The outer surface of the maximum outer diameter of the tire is the outer surface of the protruding members along the radial direction of the tire. By providing the protruding members and the protruding portion arranged along the axial direction of the tire on the outer peripheral surface of the tire, and the protruding portion protrudes radially outward from the outer surface of the protruding members, the grip of the drive wheel assembly when rolling on a lawn road surface can be improved, thereby avoiding the drive wheel assembly from slipping on the lawn road surface.

[0012] In a possible implementation, the protruding members include a first protruding member and a second protruding member. The first protruding member and the second protruding member are arranged alternately along the outer peripheral surface of the tire. The outer surface of the maximum outer diameter of the tire is the outer surface of the first protruding member along the radial direction of the tire, and / or the outer surface of the maximum outer diameter of the tire is the outer surface of the second protruding member along the radial direction of the tire. By providing the protruding portion and the alternately arranged first protruding member and second protruding member on the outer peripheral surface along the axial direction of the tire, the grip of the drive wheel assembly when rolling on a lawn road surface can be improved, thereby avoiding the drive wheel assembly from slipping on the lawn road surface.

[0013] In a possible implementation, the distribution density of the first protruding member along the circumferential direction of the tire is less than the distribution density of the protruding portion along the axial direction of the tire. At least part of the protruding portion and the first protruding member are arranged alternately along the outer peripheral surface of the tire. Under the combined action of the alternately arranged protruding portion, the first protruding member and the second protruding member, the grip of the drive wheel assembly when rolling on a lawn road surface is improved, thereby avoiding the drive wheel assembly from slipping on the lawn road surface.

[0014] In a second aspect, an embodiment of the present application provides a lawn working device, including a chassis and the drive wheel assembly described in the first aspect. The number of the drive wheel assemblies is two, and the two drive wheel assemblies are respectively detachably connected to opposite sides of the chassis.

[0015] By respectively connecting the two drive wheel assemblies to opposite sides of the chassis, the lawn working device can move smoothly on a complex lawn road surface and avoid slipping, thereby ensuring the working efficiency of the lawn working device when operating on a complex road surface. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the lawn working device provided by an embodiment of the present application;

[0017] Figure 2 is a schematic structural diagram of the drive wheel assembly provided by an embodiment of the present application;

[0018] Figure 3 is a schematic structural view of the drive wheel assembly provided by an embodiment of the present application;

[0019] Figure 4 is a schematic structural view of the drive wheel assembly provided by an embodiment of the present application;

[0020] Figure 5 is Figure 4 a schematic structural view of the drive wheel assembly shown in another perspective;

[0021] Figure 6 is Figure 5 an exploded view of the drive wheel assembly shown;

[0022] Figure 7 is Figure 5 an exploded view of the drive wheel assembly shown;

[0023] Figure 8 is Figure 5 a sectional view taken along line A-A of the drive wheel assembly shown;

[0024] Figure 9 is Figure 5 an exploded view of the drive wheel assembly shown;

[0025] Figure 10 is a schematic view of the mating structure of the drive wheel assembly and the base provided by an embodiment of the present application;

[0026] Figure 11 is a schematic structural view of the cover plate provided by an embodiment of the present application;

[0027] Figure 12 is a schematic view of the mating structure of the drive wheel assembly, the base and the cover plate provided by an embodiment of the present application.

[0028] Reference numerals

[0029] 1 - Driving wheel assembly; 2 - Wheel hub; 21 - Wheel hub body; 211 - First groove; 22 - Rim; 23 - Spoke; 3 - Motor; 31 - Rotor; 311 - Third fixing hole; 312 - Third fixing member; 32 - Rotating shaft; 33 - Fixing part; 4 - Tire; 411 - Protruding part; 412 - Groove; 413 - First protruding part; 414 - Third groove; 415 - Second protruding part; 416 - Fourth groove; 42 - First part; 43 - Second part; 44 - Front cover; 441 - First fixing hole; 442 - First fixing member; 443 - Card slot; 5 - Anti - slip member; 51 - Protruding portion; 511 - First protruding portion; 512 - Second protruding portion; 52 - Mounting portion; 521 - Second fixing hole; 522 - Second fixing member; 523 - Buckle; 6 - Fixing assembly; 61 - First fixing portion; 611 - Fifth fixing hole; 612 - Fifth fixing member; 613 - Second groove; 62 - Second fixing portion; 63 - Channel; 7 - Waterproof member; 10 - Lawn working equipment; 11 - Chassis; 111 - Base; 1111 - Fixing table; 1112 - Through hole; 112 - Cover plate; 1121 - Fourth fixing hole; 1122 - Fourth fixing member; 1123 - Abutting portion; 12 - Body; 13 - Vision assembly. Detailed implementation manner

[0030] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings. Among them, the orientation terms mentioned in the embodiments of the present application, for example, "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", "top", "bottom", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present application.

[0031] Lawn working equipment is a tool for automatically mowing grass to replace manual labor. Lawn working equipment usually includes driving wheels to drive the lawn working equipment to perform mowing tasks in the area to be worked. The driving wheels of existing lawn working equipment are prone to slipping under some poor road conditions, that is, the grip of the driving wheels of the existing structure is not enough and cannot be applied to various different weeding scenarios.

[0032] The present application proposes a driving wheel assembly and a lawn working equipment. By setting an anti - slip member in the driving wheel assembly, it is possible to avoid slipping when the lawn working equipment operates on a complex road surface, thereby improving the working efficiency of the lawn working equipment.

[0033] Figure 1 is a schematic diagram of the lawn working equipment 10 provided by the embodiment of the present application. Refer to Figure 1, the lawn operation device 10 includes a chassis 11, a drive wheel assembly 1, a vehicle body 12, and a vision assembly 13. The chassis 11 and the vehicle body 12 constitute the main part of the lawn operation device 10. The vision assembly 13 is disposed on the vehicle body 12. The vision assembly 13 is used to detect whether there are obstacles in the current operation path during the operation of the lawn operation device 10. If there are obstacles, the vision assembly 13 obtains the feature information of the obstacles, generates an obstacle avoidance path according to the feature information, and controls the lawn operation device 10 to operate according to the obstacle avoidance path, thereby improving the working efficiency of the lawn operation device 10. The number of the drive wheel assemblies 1 is two, and the two drive wheel assemblies 1 are respectively detachably connected to the opposite sides of the chassis 11 to drive the lawn operation device 10 to move on the lawn road surface and perform a range of operations.

[0034] Figure 2 is a schematic structural diagram of the drive wheel assembly 1 provided by an embodiment of the present application. Refer to Figure 2 , the drive wheel assembly 1 includes a tire 4 and an anti-slip member 5. The anti-slip member 5 is fixed to the tire 4. The anti-slip member 5 includes a plurality of protruding portions 51. The plurality of protruding portions 51 are spaced apart along the circumferential direction of the tire 4. Schematically, the plurality of protruding portions 51 are distributed in a serrated shape on the outer peripheral surface of the tire 4. Along the radial direction of the tire 4, each protruding portion 51 protrudes from the outer surface of the maximum outer diameter of the tire 4, so that when the tire 4 rolls on the lawn road surface, each protruding portion 51 can contact the lawn road surface and generate an interaction force. The dimension of each protruding portion 51 in the axial direction of the tire 4 is smaller than the axial dimension of the tire 4. Schematically, the protruding portion 51 can be in a sheet shape. The length of the protruding portion 51 in the radial direction of the tire 4 can be greater than 5 mm and less than 20 mm, and the length of the protruding portion 51 in the axial direction of the tire 4 can be greater than 2 mm and less than 5 mm, so that the protruding portion 51 has a sharp end. By providing the anti-slip member 5 including a plurality of protruding portions 51 on the circumferential side of the tire 4 of the drive wheel assembly 1, wherein the protruding portion 51 protrudes from the outer surface of the maximum outer diameter of the tire 4, and the dimension of the protruding portion 51 in the axial direction of the tire 4 is smaller than the axial dimension of the tire 4, when the drive wheel assembly 1 rolls on the lawn road surface, each protruding portion 51 can be inserted into the lawn road surface and generate a strong acting force, thereby improving the grip of the drive wheel assembly 1 and effectively avoiding the drive wheel assembly 1 from slipping on the lawn road surface.

[0035] Refer to Figure 2, in a possible implementation, a plurality of protruding members 411 protrude from the outer peripheral surface of the tire 4. The plurality of protruding members 411 are spaced apart along the circumferential direction of the tire 4, and there is a groove 412 between any two adjacent protruding members 411. The protruding members 411 and the protruding portion 51 are arranged along the axial direction of the tire 4. The outer surface of the maximum outer diameter of the tire 4 is the outer surface of the protruding member 411 along the radial direction of the tire 4, that is, the protruding portion 51 protrudes from the outer surface of the protruding member 411 along the radial direction of the tire 4, and the protruding portion 51 protrudes from the outer peripheral surface of the tire 4 where no protruding member 411 is provided along the radial direction of the tire 4. By providing the protruding member 411 and the protruding portion 51 arranged along the axial direction of the tire 4 on the outer peripheral surface of the tire 4, and the protruding portion 51 protrudes from the outer surface of the protruding member 411 along the radial direction of the tire 4, the grip of the driving wheel assembly 1 when rolling on the lawn road surface can be improved, thereby avoiding the driving wheel assembly 1 from slipping on the lawn road surface.

[0036] Refer to Figure 2 , in a possible implementation, the protruding member 411 includes a first protruding member 413 and a second protruding member 415. The first protruding member 413 and the second protruding member 415 are arranged alternately on the outer peripheral surface of the tire 4. There is a third groove 414 between any two adjacent first protruding members 413, and there is a fourth groove 416 between any two adjacent second protruding members 415. The first protruding member 413, the protruding portion 51, and the second protruding member 415 are arranged in sequence along the axial direction of the tire 4, that is, the protruding portion 51 is located between the first protruding member 413 and the second protruding member 415. When the outer surfaces of the first protruding member 413 and the second protruding member 415 along the radial direction of the tire 4 are flush, the outer surface of the maximum outer diameter of the tire 4 is the outer surfaces of the first protruding member 413 and the second protruding member 415 along the radial direction of the tire 4. At this time, the protruding portion 51 protrudes from the outer surfaces of the first protruding member 413 and the second protruding member 415 along the radial direction of the tire 4; when the first protruding member 413 protrudes from the outer surface of the second protruding member 415 along the radial direction of the tire 4, the outer surface of the maximum outer diameter of the tire 4 is the outer surface of the first protruding member 413 along the radial direction of the tire 4. At this time, the protruding portion 51 protrudes from the outer surface of the first protruding member 413 along the radial direction of the tire 4; when the second protruding member 415 protrudes from the outer surface of the first protruding member 413 along the radial direction of the tire 4, the outer surface of the maximum outer diameter of the tire 4 is the outer surface of the second protruding member 415 along the radial direction of the tire 4. At this time, the protruding portion 51 protrudes from the outer surface of the second protruding member 415 along the radial direction of the tire 4. By providing the protruding portion 51 and the mutually staggered first protruding member 413 and second protruding member 415 on the outer peripheral surface along the axial direction of the tire 4, the grip of the driving wheel assembly 1 when rolling on the lawn road surface can be improved, thereby avoiding the driving wheel assembly 1 from slipping on the lawn road surface.

[0037] Refer to Figure 2, in a possible implementation, the distribution density of the first protrusions 413 along the circumferential direction of the tire 4 is less than the distribution density of the protrusions 51 along the axial direction of the tire 4, and at least some of the protrusions 51 and the first protrusions 413 are arranged alternately along the outer peripheral surface of the tire 4. The distribution density of the second protrusions 415 along the circumferential direction of the tire 4 is less than the distribution density of the protrusions 51 along the axial direction of the tire 4, and at least some of the protrusions 51 and the second protrusions 415 are arranged alternately along the outer peripheral surface of the tire 4. Under the combined action of the alternately arranged protrusions 51, the first protrusions 413 and the second protrusions 415, the grip of the drive wheel assembly 1 when rolling on the lawn road surface is improved, thereby preventing the drive wheel assembly 1 from slipping on the lawn road surface.

[0038] Refer to Figure 2 , in a possible implementation, in the axial direction of the tire 4, the tire 4 includes a first part 42 and a second part 43 distributed on both sides of a plurality of protrusions 51. A plurality of first protrusions 413 are all located on the first part 42, and a plurality of second protrusions 415 are all located on the second part 43. Schematically, a plurality of protrusions 51 may be located at the middle position of the outer peripheral surface along the axial direction of the tire 4, and the first part 42 and the second part 43 are respectively located on opposite sides of the middle position of the outer peripheral surface along the axial direction of the tire 4. By arranging a plurality of protrusions 51 between the first part 42 and the second part 43 of the tire 4, when the drive wheel assembly 1 rolls on the lawn road surface, the acting force distribution on the matching structure of the tire 4 and the anti-slip member 5 is uniform, which is beneficial to the smooth movement of the drive wheel assembly 1 while improving the grip.

[0039] Figure 3 is a schematic structural diagram of the drive wheel assembly 1 provided by the embodiment of the present application. Refer to Figure 3, in a possible implementation, a part of the protruding portion 51 is the first protruding portion 511, and another part of the protruding portion 51 is the second protruding portion 512. In the axial direction of the tire 4, the first protruding portion 511 and the second protruding portion 512 are respectively located on opposite sides of the tire 4. The numbers of the first protruding portion 511 and the second protruding portion 512 are both multiple, and they are both spaced apart along the circumferential direction of the tire 4. The protruding member 411 is located between the first protruding portion 511 and the second protruding portion 512. That is, in the axial direction of the tire 4, the first protruding portion 511, the first protruding member 413, the second protruding member 415, and the second protruding portion 512 are arranged in sequence on the outer peripheral surface of the tire 4. Both the first protruding portion 511 and the second protruding portion 512 protrude from the outer surfaces of the first protruding member 413 and the second protruding member 415 along the radial direction of the tire 4. By making the first protruding portion 511 and the second protruding portion 512 respectively located on opposite sides of the tire 4 along its axial direction, when the driving wheel assembly 1 rolls on the lawn road surface, both the first protruding portion 511 and the second protruding portion 512 are inserted into the lawn road surface and generate acting forces, so that the acting forces received by the matching structure of the tire 4 and the anti-slip member 5 are evenly distributed. While improving the grip, it is beneficial to the smooth movement of the driving wheel assembly 1.

[0040] Figure 4 is a schematic structural diagram of the driving wheel assembly 1 provided by the embodiment of the present application, Figure 5 is Figure 4 a schematic structural diagram of the driving wheel assembly 1 shown in another perspective, combined with Figure 4 and Figure 5 shown, in a possible implementation, in the axial direction of the tire 4, multiple protruding portions 51 are located on the same side of the tire 4. The protruding portions 51 all protrude from the outer surface of the maximum outer diameter of the tire 4, that is, the protruding portions 51 protrude from the outer surfaces of the first protruding member 413 and the second protruding member 415 along the radial direction of the tire 4. When the driving wheel assembly 1 rolls on the lawn road surface, each protruding portion 51 can be inserted into the lawn road surface and generate a strong acting force, thereby improving the grip of the driving wheel assembly 1 and effectively preventing the driving wheel assembly 1 from slipping on the lawn road surface. Schematically, the protruding portion 51 can be located on the side of the tire 4 away from the first protruding member 413, or on the side of the tire 4 away from the second protruding member 415.

[0041] Combined with Figure 4 and Figure 5As shown, in a possible implementation, the anti-slip member 5 includes an annular mounting portion 52, and the protruding portion 51 protrudes from the outer peripheral surface of the mounting portion 52. The mounting portion 52 is detachably connected to the tire 4. Schematically, the mating structure of the protruding portion 51 and the mounting portion 52 is in a gear shape. By protruding the protruding portion 51 from the outer peripheral surface of the mounting portion 52 and detachably connecting the mounting portion 52 to the tire 4, the protruding portion 51 can be selectively assembled in the vicinity of the tire 4 along the radial direction of the tire 4 according to actual needs, thereby providing a stronger grip for the drive wheel assembly 1 and preventing the drive wheel assembly 1 from slipping on the lawn road surface.

[0042] Figure 6 is Figure 5 an exploded view of the drive wheel assembly 1 shown, in combination with Figure 5 and Figure 6As shown, in a possible implementation, the drive wheel assembly 1 includes a hub 2, a motor 3, a tire 4, and an anti-slip member 5. The hub 2 includes a hub body 21, a rim 22, and spokes 23 connecting the hub body 21 and the rim 22. The rotor 31 of the motor 3 abuts against the hub body 21 along the axis direction of the hub 2 to rotate the hub body 21, that is, the rotor 31 abuts against the hub 2 to rotate the hub 2 while rotating. Schematically, the motor 3 can be a hub motor. The hub 2 is used to mount and support the tire 4, and the tire 4 is assembled on the outer peripheral side of the hub 2. A front cover 44 is provided on the side of the tire 4 away from the motor 3. The front cover 44 is detachably connected to the side of the hub body 21 facing away from the motor 3. Specifically, first fixing holes 441 are provided on both the front cover 44 and the side of the hub body 21 facing away from the motor 3. A first fixing member 442 passes through the first fixing hole 441 of the front cover 44 and the first fixing hole 441 of the hub body 21 to connect the front cover 44 and the hub body 21. The number of the first fixing holes 441 can be multiple, and the multiple first fixing holes 441 can be evenly distributed on the front cover 44 and the side of the hub body 21 facing away from the motor 3. Schematically, the first fixing hole 441 can be a threaded hole, and the first fixing member 442 can be a bolt. The mounting portion 52 is detachably connected to the side of the front cover 44 facing away from the hub body 21. Specifically, second fixing holes 521 are provided at corresponding positions on both the mounting portion 52 and the side of the front cover 44 facing away from the hub body 21. A second fixing member 522 passes through the second fixing hole 521 of the mounting portion 52 and the second fixing hole 521 of the front cover 44 to connect the front cover 44 and the mounting portion 52. The number of the second fixing holes 521 can be multiple, and the multiple second fixing holes 521 can be evenly distributed on the mounting portion 52 and the side of the front cover 44 facing away from the hub body 21. Schematically, the second fixing hole 521 can be a threaded hole, and the second fixing member 522 can be a bolt. By sequentially connecting the hub body 21, the front cover 44, and the mounting portion 52, the protruding portion 51 can be conveniently assembled at a position adjacent to the tire 4 along the radial direction of the tire 4, thereby providing stronger grip for the drive wheel assembly 1 and preventing the drive wheel assembly 1 from slipping on the lawn road surface.

[0043] Refer to Figure 6, in a possible implementation, the front cover 44 is annular, and a clamping groove 443 is provided on a surface of the front cover 44 facing away from the hub body 21. The opening direction of the clamping groove 443 is consistent with the radial direction of the front cover 44. Second fixing holes 521 may be provided on the wall surface of the clamping groove 443. There may be multiple clamping grooves 443, and the multiple clamping grooves 443 are evenly distributed on the surface of the front cover 44 facing away from the hub body 21. A buckle 523 is provided on the inner peripheral side of the mounting portion 52. The buckle 523 extends in a direction away from the protruding portion 51. Second fixing holes 521 may be provided on the buckle 523. There may be multiple buckles 523, and the multiple buckles 523 are evenly distributed on the inner peripheral side of the mounting portion 52. The buckle 523 is buckled and abutted against the clamping groove 443. By providing the clamping groove 443 on the front cover 44 and the buckle 523 on the mounting portion 52, when the mounting portion 52 is assembled to the front cover 44, the cooperation and abutment between the buckle 523 and the clamping groove 443 can play a positioning role, so that the second fixing holes 521 on the front cover 44 are accurately aligned with the second fixing holes 521 on the mounting portion 52, which is beneficial to accurately and conveniently assembling the protruding portion 51 along the radial direction of the tire 4 to a position adjacent to the tire 4, thereby providing stronger grip for the drive wheel assembly 1 and preventing the drive wheel assembly 1 from slipping on the lawn road surface.

[0044] Figure 7 is Figure 5 the exploded view of the drive wheel assembly 1 shown in Figure 8 is Figure 5 the A-A cross-sectional view of the drive wheel assembly 1 shown in Figure 6 , Figure 7 and Figure 8 shown, in a possible implementation, the hub body 21 is provided with a first groove 211. The opening direction of the first groove 211 faces the axial direction of the tire 4. A plurality of U-shaped grooves are provided on the inner side wall of the first groove 211. A plurality of protruding portions are convexly provided on the outer side wall of the rotor 31. The protruding portions are sleeved and abutted against the U-shaped grooves, which is beneficial for the rotor 31 to drive the hub body 21 to rotate together. Third fixing holes 311 are provided on a surface of the rotor 31 in contact with the first groove 211 and on the bottom wall of the first groove 211. A third fixing member 312 passes through the third fixing holes 311 of the rotor 31 and the third fixing holes 311 on the bottom wall of the first groove 211 so that the rotor 31 is detachably connected to the wall surface of the first groove 211, thereby connecting the rotor 31 and the hub body 21, enabling the motor 3 to better drive the cooperation structure of the hub 2, the tire 4, and the anti-slip member 5, and further ensuring the working efficiency of the lawn working equipment when operating on a complex road surface.

[0045] Figure 9 is Figure 5 the exploded view of the drive wheel assembly shown in Figure 10 is the schematic diagram of the cooperation structure of the drive wheel assembly 1 and the base 111 provided by the embodiment of the present application, Figure 11is a schematic diagram of the structure of the cover plate 112 provided in an embodiment of the present application, Figure 12 1 is a schematic diagram of the matching structure of the driving wheel assembly 1, the base 111 and the cover plate 112 provided in the embodiment of the present application. Figure 8 and Figure 9 As shown, in a possible embodiment, the driving wheel assembly 1 includes a fixing assembly 6, which is cylindrical and has a channel 63. The fixing assembly 6 includes a first fixing portion 61 and a second fixing portion 62 that are detachably connected, and the first fixing portion 61 and the second fixing portion 62 together form a channel 63. The fixing portion 33 of the motor 3 at least partially abuts against the inner wall of the channel 63, so that the fixing portion 33 and the fixing assembly 6 are relatively stationary, thereby allowing the motor 3 to form a stable connection with the fixing assembly 6 during the rotation process. The chassis 11 includes a base 111 and a cover plate 112, and the base 111 includes a fixing platform 1111, and the fixing platform 1111 has a through hole 1112. The fixing assembly 6 at least partially forms an interference fit with the through hole 1112, so that the fixing assembly 6 and the base 111 are stably connected, and indirectly the motor 3 and the base 111 are stably connected. The base 111 and the cover plate 112 are both provided with a fourth fixing hole 1121, and the fourth fixing member 1122 passes through the fourth fixing hole 1121 of the base 111 and the fourth fixing hole 1121 of the cover plate 112, so that the cover plate 112 can be detachably connected to the base 111. The cover plate 112 and the side of the first fixing portion 61 facing away from the second fixing portion 62 are both provided with a fifth fixing hole 611, and the fifth fixing member 612 passes through the fifth fixing hole 611 of the cover plate 112 and the first fixing portion 61, so that the cover plate 112 can be detachably connected to the side of the first fixing portion 61 facing away from the second fixing portion 62, that is, the cover plate 112 can be detachably connected to the fixing assembly 6. By connecting the cover plate 112 to the base 111 and the fixing assembly 6 respectively, the fixing assembly 6 and the base 111 are relatively stationary when the lawn working equipment is working, so that the motor 3 forms a stable connection with the chassis 11 when driving the matching structure of the wheel hub 2, the tire 4 and the anti-skid part 5, which is beneficial to ensure the working efficiency of the lawn working equipment on complex roads.

[0046] Combination Figure 8 and Figure 9 As shown, the driving wheel assembly 1 further includes a waterproof member 7, which is sleeved on one end of the rotating shaft 32 away from the hub body 21. Schematically, the waterproof member 7 can be synthetic rubber.

[0047] Combination Figure 10 , Figure 11 and Figure 12As shown, in a possible implementation manner, a butting portion 1123 protrudes from the side of the cover plate 112 facing the first fixing portion 61, and a second groove 613 is formed on the side of the first fixing portion 61 facing away from the second fixing portion 62. The number of the fifth fixing holes 611 on the side of the first fixing portion 61 facing away from the second fixing portion 62 is at least two, and the at least two fifth fixing holes 611 are respectively located on opposite sides of the second groove 613. Schematically, the shape of the butting portion 1123 is complementary to the opening shape of the second groove 613, and the butting portion 1123 is engaged with the second groove 613 to enable the butting portion 1123 to abut against the wall surface of the second groove 613, so as to form a more stable connection relationship between the cover plate 112 and the fixing assembly 6, and finally ensure the stable connection between the driving wheel assembly 1 and the chassis 11, which is beneficial to the working efficiency of the lawn working equipment when operating on a complex road surface.

[0048] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A drive wheel assembly, characterized in that, It includes a tire and anti-slip members. The anti-slip members are fixed to the tire. The anti-slip members include a plurality of protruding portions, and the plurality of protruding portions are spaced apart along the circumferential direction of the tire. In the radial direction of the tire, each protruding portion protrudes from the outer surface of the maximum outer diameter of the tire, and the dimension of each protruding portion in the axial direction of the tire is less than the axial dimension of the tire.

2. The drive wheel assembly according to claim 1, wherein, In the axial direction of the tire, the tire includes a first part and a second part distributed on both sides of the plurality of protruding portions.

3. The drive wheel assembly according to claim 1, characterized in that, A part of the plurality of protruding portions are first protruding portions, and another part of the plurality of protruding portions are second protruding portions. In the axial direction of the tire, the first protruding portions and the second protruding portions are respectively located on opposite sides of the tire. The number of the first protruding portions and the second protruding portions are both plural, and they are both spaced apart along the circumferential direction of the tire.

4. The drive wheel assembly according to claim 1, characterized in that, In the axial direction of the tire, the plurality of protruding portions are located on the same side of the tire.

5. The drive wheel assembly according to claim 1, characterized in that, The anti-slip member includes an annular mounting portion, and the protruding portions protrude from the outer peripheral surface of the mounting portion. The mounting portion is detachably connected to the tire.

6. The drive wheel assembly according to claim 5, wherein, The drive wheel assembly further includes a motor. The rotor of the motor abuts against the hub of the drive wheel assembly to rotate the hub. A front cover is provided on the side of the tire away from the motor. The mounting portion is detachably connected to the front cover.

7. The drive wheel assembly according to any one of claims 1-6, characterized in that, A plurality of protruding members protrude from the outer peripheral surface of the tire, and the plurality of protruding members are spaced apart along the circumferential direction of the tire. The protruding members and the protruding portions are arranged in the axial direction of the tire. The outer surface of the maximum outer diameter of the tire is the outer surface of the protruding members in the radial direction of the tire.

8. The drive wheel assembly according to claim 7, characterized in that The protruding members include first protruding members and second protruding members. The first protruding members and the second protruding members are arranged alternately along the outer peripheral surface of the tire; the outer surface of the maximum outer diameter of the tire is the outer surface of the first protruding members in the radial direction of the tire, and / or the outer surface of the maximum outer diameter of the tire is the outer surface of the second protruding members in the radial direction of the tire.

9. The drive wheel assembly according to claim 8, characterized in that The distribution density of the first protruding members in the circumferential direction of the tire is less than the distribution density of the protruding portions in the axial direction of the tire. At least part of the protruding portions and the first protruding members are arranged alternately along the outer peripheral surface of the tire.

10. A grassland operation device, characterized in that, It includes a chassis and the drive wheel assembly according to any one of claims 1-9. The number of the drive wheel assemblies is two, and the two drive wheel assemblies are respectively detachably connected to opposite sides of the chassis.

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