A lawn mowing mechanism and lawn mowing robot
By designing the guide section, obstacle-crossing section, and support section of the skid assembly, the problem of grass being crushed during the lawnmower's obstacle-crossing process was solved, achieving higher obstacle-crossing ability and safety, while also improving mowing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HANYANG TECHNOLOGY CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-07-31
AI Technical Summary
Existing lawnmowers often have obstacle-crossing components that can lower the lawn during obstacle crossing, leading to incomplete mowing and safety issues.
A grass-cutting mechanism including a ski boot assembly is designed. The ski boot assembly includes a guide section, an obstacle-crossing section, and a support section. The distance between the guide section and the bottom of the machine body gradually increases. The blocking block is located on the side of the support section. The obstacle-crossing section improves obstacle-crossing ability after crossing the bump. The support section and blocking block are designed to reduce the probability of grass crushing and improve safety.
It improves the obstacle-crossing ability and safety of lawnmowers, while reducing the probability of grass being crushed and increasing mowing efficiency.
Smart Images
Figure CN224571846U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of robotics, and in particular to a lawn mowing mechanism and a lawn mowing robot. Background Technology
[0002] Lawn mowers are widely used in agriculture, horticulture, parks, and other fields due to their advantages such as high efficiency, safety, reliability, environmental friendliness, and energy saving. However, during autonomous mowing, lawn mowers inevitably encounter uneven surfaces such as bumps and dips. When these bumps are crossed, the mower wheels are prone to slipping, leading to poor mowing results.
[0003] To improve the obstacle-crossing capability of lawnmowers, an obstacle-crossing component is installed on the lawnmower. This component extends from the front to the rear of the lawnmower and also serves to prevent hands from reaching into the blade area. In existing technology, during the lawnmower's movement, the obstacle-crossing component flattens a large area of grass. This flattened grass makes it difficult for the blades to cut completely or completely. Summary of the Invention
[0004] This utility model provides a grass-cutting mechanism and a grass-cutting robot to solve the technical problems of large-area grass-pressing in the obstacle-crossing components of the prior art.
[0005] An embodiment of the present invention provides a lawn mowing mechanism, including a lawn mowing component, a skid component, and a body having an internal space, wherein the bottom of the body has a first through hole communicating with the internal space; The mowing assembly includes a rotary drive and a cutter mounted on the output end of the rotary drive, the rotary drive being movably mounted in the first through hole; The skid assembly includes an obstacle-crossing block and a blocking block. The obstacle-crossing block includes a guide section, an obstacle-crossing section, and a support section. The distance between the guide section and the bottom of the machine body gradually increases from front to back. The blocking block is installed on the side of the support section and is located to the side of the cutter. The distance between the bottom of the support section and the bottom of the body is a first distance, the distance between the bottom of the blocking block and the bottom of the body is a second distance, and the distance between the bottom of the obstacle crossing section and the bottom of the body is a third distance; the first distance is greater than the second distance and less than the third distance.
[0006] Optionally, the bottom of the obstacle-crossing section is provided with a first conical portion, the cross-section of the first conical portion gradually increasing from bottom to top; The bottom of the support section is provided with a second conical part, and the cross-section of the second conical part gradually increases from bottom to top.
[0007] Optionally, the lawn mowing assembly further includes a touch guard, which includes a support plate, a touch guard arm, and two support arms, with the opposite ends of the support arms connected to the touch guard arm and the support plate, respectively. The support plate is mounted on the rotary drive component, and the anti-touch arm is located between the cutter and the support section.
[0008] Optionally, the mowing mechanism may further include a combing component installed at the front of the bottom of the machine body; The combing component includes a base plate and a plurality of comb teeth spaced apart on the base plate. The spacing between the comb teeth is 10 to 30 mm, and the width of the comb teeth gradually increases from front to back.
[0009] Optionally, the distance between the bottom of the comb teeth and the bottom of the body gradually increases from front to back.
[0010] Optionally, the machine body includes a frame, a support member, and a housing mounted on the frame, wherein the housing is provided with a second through hole; The mowing mechanism also includes a sealing ring, which is installed on the obstacle-crossing block. One end of the support member is installed on the obstacle-crossing block, and the other end of the support member passes through the second through hole and is fixedly installed on the frame. The sealing ring is arranged around the second through hole to seal the gap between the obstacle-crossing block and the housing.
[0011] Optionally, the mowing mechanism further includes casters mounted on the bottom of the machine body, with the guide section and the obstacle-crossing section located to the side of the casters.
[0012] Optionally, the mowing mechanism further includes a flexible anti-collision strip, which is installed on the side of the machine body.
[0013] Optionally, the lawn mowing assembly further includes a lifting drive installed in the internal space, the output end of which is connected to the rotary drive.
[0014] An embodiment of this utility model also provides a lawn mowing robot, including a moving mechanism and the above-mentioned lawn mowing mechanism; the body is detachably mounted on the moving mechanism.
[0015] In this embodiment, the obstacle-crossing block includes a guide section, an obstacle-crossing section, and a support section. The distance between the obstacle-crossing section and the bottom of the machine body gradually increases from front to back. The blocking block is installed on the side of the support section and is located to the side of the cutter. When the mowing mechanism reaches a protrusion during its movement, the guide section first contacts the protrusion. The guide section can gradually raise the mowing mechanism and make the protrusion contact the obstacle-crossing section. After the obstacle-crossing section crosses the protrusion, the mowing mechanism also crosses the protrusion, thereby improving the obstacle-crossing ability of the mowing mechanism.
[0016] In addition, the distance between the bottom of the support section and the bottom of the body is a first distance, the distance between the bottom of the blocking block and the bottom of the body is a second distance, and the distance between the bottom of the obstacle-crossing section and the bottom of the body is a third distance. The first distance is greater than the second distance and less than the third distance. When the user's hand touches the cutter, the blocking block can block the hand from the outside. The distance between the hand and the cutter is large, so the blocking block can prevent the hand from contacting the cutter. Even if the hand moves along the blocking block, the side wall of the support section will also prevent the hand from touching the cutter, thus improving the safety of the mowing mechanism. Furthermore, the obstacle-crossing section has a lower ground clearance than the support section, meaning the support section is less likely to crush the lawn compared to the obstacle-crossing section and the guide section. Also, because the support section has a lower ground clearance than the blocking block, when the support section and the blocking block pass over the lawn, the blocking block is less likely to crush the lawn compared to the support section. In this invention, the design of the skid assembly reduces the probability of the skid assembly crushing the grass and improves the mowing efficiency of the mowing mechanism. Attached Figure Description
[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the structure of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 3 A schematic diagram of the sliding shoe assembly of a lawn mowing mechanism provided in an embodiment of this utility model; Figure 4 A schematic diagram of the structure of the obstacle-crossing block installed on the frame according to an embodiment of this utility model; Figure 5 This is a schematic diagram of the structure of the mowing component of the mowing mechanism provided in one embodiment of the present invention.
[0019] The reference numerals in the accompanying drawings are as follows: 1. Mowing assembly; 11. Rotary drive unit; 12. Mower blade; 13. Anti-collision frame; 131. Support plate; 132. Anti-collision arm; 133. Support arm; 2. Slipper assembly; 21. Obstacle clearance block; 211. Guide section; 212. Obstacle clearance section; 213. Support section; 22. Blocking block; 3. Body; 31. First through hole; 32. Frame; 33. Housing; 4. Combing assembly; 41. Comb teeth; 5. Casters; 6. Flexible anti-collision strip; 7. Support component. Detailed Implementation
[0020] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0021] In this application, "front" refers to the direction of the front of the mowing mechanism, and "rear" refers to the direction of the side of the mowing mechanism.
[0022] like Figures 1 to 3 As shown, an embodiment of the present invention provides a lawn mowing mechanism, including a lawn mowing component 1, a skid component 2, and a body 3 having an internal space (not shown in the figure). The bottom of the body 3 has a first through hole 31 communicating with the internal space. The mowing assembly 1 includes a rotary drive 11 and a cutter 12 installed at the output end of the rotary drive 11. The rotary drive 11 is movably installed in the first through hole 31. The skid assembly 2 includes an obstacle-crossing block 21 and a blocking block 22. The obstacle-crossing block 21 includes a guide section 211, an obstacle-crossing section 212, and a support section 213. The distance between the guide section 211 and the bottom of the body 3 gradually increases from front to back. The blocking block 22 is installed on the side of the support section 213 and is located on the side of the cutter 12. The distance between the bottom of the support section 213 and the bottom of the body 3 is a first distance, the distance between the bottom of the blocking block 22 and the bottom of the body 3 is a second distance, and the distance between the bottom of the obstacle crossing section 212 and the bottom of the body 3 is a third distance; the first distance is greater than the second distance and less than the third distance.
[0023] The obstacle-crossing block 21 and the blocking block 22 can be separate parts or integral parts; the guide section 211, the obstacle-crossing section 212, and the support section 213 are integrally formed parts; the obstacle-crossing block 21 is a long strip structure and extends from front to back at the bottom of the body 3; the guide section 211 is located in front of the obstacle-crossing block 21, the support block is located behind the obstacle-crossing block 21, and the blocking block 22 is installed on the outer side of the support section 213.
[0024] In this embodiment, the obstacle-crossing block 21 includes a guide section 211, an obstacle-crossing section 212, and a support section 213. The distance between the obstacle-crossing section 212 and the bottom of the body 3 gradually increases from front to back. The blocking block 22 is installed on the side of the support section 213 and is located on the side of the cutter 12. When the mowing mechanism reaches a protrusion during its movement, the guide section 211 first contacts the protrusion. The guide section 211 can gradually raise the mowing mechanism and make the protrusion contact the obstacle-crossing section 212. After the obstacle-crossing section 212 crosses the protrusion, the mowing mechanism also crosses the protrusion, thereby improving the obstacle-crossing ability of the mowing mechanism.
[0025] In addition, the distance between the bottom of the support section 213 and the bottom of the body 3 is a first distance, the distance between the bottom of the blocking block 22 and the bottom of the body 3 is a second distance, and the distance between the bottom of the obstacle-crossing section 212 and the bottom of the body 3 is a third distance. The first distance is greater than the second distance and less than the third distance. When the user's hand touches the cutter 12, the blocking block 22 can block the hand from the outside. The distance between the hand and the cutter 12 is large, so the blocking block 22 can prevent the hand from contacting the cutter 12. Even if the hand moves along the blocking block 22, the side wall of the support section 213 will also prevent the hand from touching the cutter 12, thus improving the safety of the mowing mechanism. Furthermore, the obstacle-crossing section 212 is lower than the ground clearance of the support section 213. Compared to the obstacle-crossing section 212 and the guide section 211, the support section 213 is less likely to crush the lawn. Also, because the ground clearance of the support section 213 is lower than that of the blocking block 22, when the support section 213 and the blocking block 22 pass over the lawn, the blocking block 22 is less likely to crush the lawn than the support section 213. In this invention, the design of the skid assembly 2 reduces the probability of the skid assembly 2 crushing the grass and improves the mowing efficiency of the mowing mechanism.
[0026] In one embodiment, such as Figure 2 and Figure 3 As shown, the bottom of the obstacle-crossing section 212 is provided with a first conical part, and the cross-section of the first conical part gradually increases from bottom to top; The bottom of the support section 213 is provided with a second conical part, and the cross-section of the second conical part gradually increases from bottom to top.
[0027] In this embodiment, the cross-sections at the bottom of the obstacle-crossing section 212 and the support section 213 are both small, thereby reducing the grass-pressing area of the obstacle-crossing section 212 and the support section 213, and further improving the grass-cutting efficiency of the mowing mechanism.
[0028] In one embodiment, such as Figure 1 and Figure 5 As shown, the lawn mowing assembly 1 also includes a touch guard 13, which includes a support plate 131, a touch guard arm 132, and two support arms 133. The opposite ends of the support arms 133 are respectively connected to the touch guard arm 132 and the support plate 131. The support plate 131 is mounted on the rotary drive component 11, and the anti-touch arm 132 is located between the cutter 12 and the support section 213.
[0029] The support plate 131, the anti-touch arm 132, and the support arm 133 are integrally formed parts; the support plate 131 is fixedly installed on the fixing part of the rotary drive component 11.
[0030] Specifically, during the process of the rotary drive 11 driving the cutter 12 to cut grass, broken grass can splash onto the support arm 133. This reduces the probability of broken grass entering the first through hole 31. Furthermore, the cutter 12 generates suction as it rotates below the support arm 133, causing broken grass on the support arm 133 to fall off, thus reducing the probability of grass entanglement or blockage in the mowing mechanism. Additionally, the anti-touch arm 132 is located to the side of the cutter 12, preventing hands from touching the cutter 12 and further improving the safety of the mowing mechanism.
[0031] In one embodiment, such as Figure 1 As shown, the mowing mechanism also includes a grass combing component 4 installed at the front bottom of the body 3; The combing component 4 includes a base plate and a plurality of comb teeth 41 spaced apart on the base plate. The spacing between the comb teeth 41 is 10 to 30 mm. The width of the comb teeth 41 gradually increases from front to back.
[0032] The number of comb teeth 41 can be set according to actual needs, and the comb teeth 41 and the base plate are integrally formed.
[0033] Specifically, during the movement of the mowing mechanism, the comb teeth 41 first contact the lawn, and the comb teeth 41 comb the grass backward, reducing the grass-pressing area of the combing component 4, and further improving the mowing efficiency of the mowing mechanism.
[0034] In one embodiment, such as Figure 1 As shown, the distance between the bottom of the comb teeth 41 and the bottom of the body 3 gradually increases from front to back.
[0035] The front of the bottom of the comb teeth 41 is higher than the rear of the bottom.
[0036] Specifically, when the mowing mechanism encounters a bump during its movement, the comb teeth 41 and the guide section 211 first come into contact with the bump, thereby gradually raising the mowing mechanism and further improving its obstacle-crossing ability.
[0037] In one embodiment, such as Figure 1 and Figure 4 As shown, the body 3 includes a frame 32 and a housing 33 mounted on the frame 32, and the housing 33 is provided with a second through hole (not shown in the figure). The mowing mechanism also includes a sealing ring (not shown in the figure), which is installed on the obstacle-crossing block 21. One end of the support member 7 is installed on the obstacle-crossing block 21, and the other end of the support member 7 is fixedly installed on the frame 32 after passing through the second through hole. The sealing ring is arranged around the second through hole to seal the gap between the obstacle-crossing block 21 and the housing 33.
[0038] The frame 32 can be made of steel pipe, and the frame 32 has high strength and rigidity; the housing 33 is a thin plate; the sealing ring is compressed between the housing 33 and the obstacle-crossing block 21, and the second through hole is in the inner ring of the sealing ring, so that the sealing ring can seal the second through hole.
[0039] In this embodiment, the obstacle-crossing block 21 and the combing component 4 are both fixedly installed on the frame 32, ensuring the stability of the obstacle-crossing block 21 and the combing component 4 installed on the machine body 3.
[0040] In one embodiment, such as Figure 1 As shown, the mowing mechanism also includes casters 5 installed at the bottom of the body 3, and the guide section 211 and the obstacle crossing section 212 are located on the side of the casters 5.
[0041] Specifically, when the height of the ledge is low, the comb teeth 41 and the guide section 211 will not contact the ledge, and the universal wheel 5 will cross the ledge by its own housing 33; when the height of the ledge is high, the comb teeth 41 and / or the guide section 211 will contact the ledge, and the mowing mechanism assembly will be raised, thereby facilitating the mowing mechanism to cross the ledge.
[0042] To further explain, the ground clearance of the guide section 211 and the obstacle-crossing section 212 is less than the ground clearance of the wheel center of the omnidirectional wheel 5; when the omnidirectional wheel 5 encounters a bump, the vehicle body can be raised to increase the lawnmower's ability to cross bumps and protect the omnidirectional wheel 5.
[0043] In one embodiment, such as Figure 1 As shown, the mowing mechanism also includes a flexible anti-collision strip 6, which is installed on the side of the body 3.
[0044] The flexible anti-collision strip 6 can be installed around the body 3, and the flexible anti-collision strip 6 can be made of silicone material.
[0045] In this embodiment, the flexible anti-collision strip 6 can prevent the machine body 3 from colliding with external objects, thus extending the service life of the lawn mowing mechanism.
[0046] In one embodiment, the lawn mowing assembly 1 further includes a lifting drive (not shown) installed in the internal space, the output end of which is connected to the rotation drive 11.
[0047] The lifting drive components include, but are not limited to, pneumatic cylinders, hydraulic cylinders, and lead screw and nut assemblies.
[0048] In this embodiment, the lifting drive can drive the rotating drive 11 to move up and down in the first through hole 31, thereby adjusting the height of the cutter 12 off the ground. The grass clumps separated by this mowing mechanism can retain different heights, improving the applicability and versatility of the mowing mechanism.
[0049] An embodiment of this utility model also provides a lawn mowing robot, including a moving mechanism (not shown in the figure) and the above-mentioned lawn mowing mechanism; the body 3 is detachably mounted on the moving mechanism.
[0050] The mobile mechanism can move autonomously on the ground, thereby driving the mowing mechanism to move so that the mowing mechanism can complete the mowing action.
[0051] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model 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 utility model, and should all be included within the protection scope of this utility model.
Claims
1. A grass cutting mechanism, characterised in that, It includes a mowing assembly, a ski boot assembly, and a body with an internal space, wherein the bottom of the body has a first through hole communicating with the internal space; The mowing assembly includes a rotary drive and a cutter mounted on the output end of the rotary drive, the rotary drive being movably mounted in the first through hole; The skid assembly includes an obstacle-crossing block and a blocking block. The obstacle-crossing block includes a guide section, an obstacle-crossing section, and a support section. The distance between the guide section and the bottom of the machine body gradually increases from front to back. The blocking block is installed on the side of the support section and is located to the side of the cutter. The distance between the bottom of the support section and the bottom of the body is a first distance, the distance between the bottom of the blocking block and the bottom of the body is a second distance, and the distance between the bottom of the obstacle crossing section and the bottom of the body is a third distance; the first distance is greater than the second distance and less than the third distance.
2. The mowing mechanism of claim 1, wherein, The bottom of the obstacle-crossing section is provided with a first conical part, and the cross-section of the first conical part gradually increases from bottom to top; The bottom of the support section is provided with a second conical part, and the cross-section of the second conical part gradually increases from bottom to top.
3. The mowing mechanism of claim 1, wherein, The lawn mowing assembly also includes a touch guard, which includes a support plate, a touch guard arm, and two support arms, with the opposite ends of the support arms connected to the touch guard arm and the support plate, respectively. The support plate is mounted on the rotary drive component, and the anti-touch arm is located between the cutter and the support section.
4. The mowing mechanism of claim 1, wherein, The mowing mechanism also includes a grass combing component installed at the front of the bottom of the machine body; The combing component includes a base plate and a plurality of comb teeth spaced apart on the base plate, wherein the spacing between the comb teeth is 10 to 30 mm; and the width of the comb teeth gradually increases from front to back.
5. The mowing mechanism of claim 4, wherein, The distance between the bottom of the comb teeth and the bottom of the body gradually increases from front to back.
6. The mowing mechanism of claim 1, wherein, The machine body includes a frame, a support component, and a housing mounted on the frame, wherein the housing is provided with a second through hole; The mowing mechanism also includes a sealing ring, which is installed on the obstacle-crossing block. One end of the support member is installed on the obstacle-crossing block, and the other end of the support member passes through the second through hole and is fixedly installed on the frame. The sealing ring is arranged around the second through hole to seal the gap between the obstacle-crossing block and the housing.
7. The mowing mechanism of claim 1, wherein, The mowing mechanism also includes casters mounted on the bottom of the machine body, with the guide section and the obstacle-crossing section located to the side of the casters.
8. The mowing mechanism of claim 1, wherein, The mowing mechanism also includes a flexible anti-collision strip, which is installed on the side of the machine body.
9. The mowing mechanism of claim 1, wherein, The lawn mowing assembly also includes a lifting drive unit installed in the internal space, the output end of which is connected to the rotation drive unit.
10. A mowing robot, characterized in that It includes a moving mechanism and a mowing mechanism as described in any one of claims 1 to 9; the body is detachably mounted on the moving mechanism.