A lawn mowing mechanism and lawn mowing robot

Abstract

This utility model relates to the field of robotics, and more particularly to a lawn mowing mechanism and a lawn mowing robot. The lawn mowing mechanism includes a lifting drive assembly, a rotating drive component, a cutter assembly, a compression sleeve, and a housing with an internal space. The bottom of the housing has a first through hole. The output end of the lifting drive assembly is connected to the rotating drive component, and the output end of the rotating drive component is connected to the cutter assembly. The lifting drive assembly drives the rotating drive component to move up and down within the first through hole. One end of the compression sleeve is fixedly mounted on the housing, and the other end is fixedly mounted on the rotating drive component. The rotating drive component is located within the inner hole of the compression sleeve, which seals the first through hole. In this utility model, the compression sleeve is always in a state of sealing the first through hole, preventing external dust and moisture from entering the internal space through the first through hole, thus improving the waterproof rating of the lawn mowing mechanism and extending its service life.

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 mowing, safety, reliability, and energy saving. Their precise mowing, multi-functionality, and user-friendly design significantly improve lawn maintenance efficiency, making them popular with users. Lawn mowers utilize a motor to drive the blades at high speed, greatly increasing the weeding speed and significantly saving workers' time and manpower. Since different lawns require different mowing depths, a lifting drive mechanism is needed in the lawn mower. This mechanism drives the motor and blades to rise and fall, thereby adjusting the blade height above the ground and ensuring that the grass is cut to different lengths.

[0003] In the existing technology, the lifting drive motor moves directly in the through hole at the bottom of the base shell. There is a certain gap between the motor and the inside of the through hole, which allows moisture to enter the lawnmower and reduces the lawnmower's waterproof effect. Summary of the Invention

[0004] This utility model provides a mowing mechanism and a mowing robot to solve the technical problem in the prior art, such as water easily entering the interior of the mower through the gap.

[0005] An embodiment of the present invention provides a lawn mowing mechanism, including a lifting drive assembly, a rotating drive component, a cutter assembly, a compression sleeve, and a housing with an internal space. The bottom of the housing is provided with a first through hole communicating with the internal space. The lifting drive assembly is installed in the internal space. The output end of the lifting drive assembly is connected to the rotary drive component, and the output end of the rotary drive component is connected to the cutter assembly. The lifting drive assembly is used to drive the rotary drive component to move up and down in the first through hole. One end of the compression sleeve is fixedly mounted on the housing, and the other end of the compression sleeve is fixedly mounted on the rotary drive component. The rotary drive component is located in the inner hole of the compression sleeve, and the compression sleeve is used to block the first through hole.

[0006] Optionally, the bottom of the compression sleeve is provided with a first inner annular portion and a first outer annular portion, the first inner annular portion abutting against the rotary drive member; the first inner annular portion and the first outer annular portion are used to block the first through hole; The lawnmower also includes a first annular pressure plate, which is used to press the first outer annular portion onto the machine housing.

[0007] Optionally, the housing is further provided with an annular pressure groove surrounding the first through hole, and the first annular pressure plate is used to press the first outer annular portion into the annular pressure groove.

[0008] Optionally, the top of the compression sleeve is provided with a second inner annular portion and a second outer annular portion, the second inner annular portion abutting against the rotary drive member; The lawnmower also includes a second annular pressure plate and a lifting plate. The output end of the lifting drive assembly is connected to the lifting plate, and the rotary drive component is mounted on the lifting plate. The second annular pressure plate is used to press the second outer annular portion onto the lifting plate.

[0009] Optionally, the rotary drive member is further provided with an annular step, and the lifting plate is used to press the second inner annular portion onto the annular step.

[0010] Optionally, the lifting drive assembly includes a motor, a lead screw, a nut, a guide rod, and a sliding sleeve. The nut is mounted on the lifting plate and threadedly connected to the lead screw, and the output end of the motor is connected to the lead screw. The guide rod is installed in the internal space, and the sliding sleeve is installed on the lifting plate and slidably sleeved on the guide rod.

[0011] Optionally, the cutter assembly includes a fastening disc, a fastening sleeve, a cutter disc, and a plurality of blades circumferentially spaced on the cutter disc. The cutter disc is provided with a fastening groove, and the bottom wall of the fastening groove is provided with a mounting groove. The fastening plate is provided with a second through hole, the output end of the rotary drive extends through the second through hole into the mounting groove, and the fastening sleeve is fixedly sleeved on the output end of the rotary drive and located in the mounting groove; The fastening disc is fixedly installed in the fastening groove and is used to limit the fastening sleeve in the installation groove.

[0012] Optionally, the diameter of the cutter head is larger than the inner diameter of the first through hole, and the cutter head is located below the first through hole.

[0013] Optionally, the mowing mechanism may also include casters mounted on the bottom of the housing.

[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 casing is detachably mounted on the moving mechanism.

[0015] In this invention, the lifting drive assembly can drive the rotary drive component to move up and down. The cutter assembly is installed at the output end of the rotary drive component, thereby adjusting the height of the cutter assembly from the ground so that the grass is cut at different heights by the cutter assembly. The bottom of the compression sleeve is installed on the housing, and the top of the compression sleeve is installed on the rotary drive component, with the rotary drive component located in the inner hole of the compression sleeve. The compression sleeve is used to seal the first through hole. During the up and down movement of the rotary drive component, the compression sleeve can be in a compressed or extended state, so that the compression sleeve is always in the state of sealing the first through hole, preventing external dust, moisture, etc. from entering the internal space through the first through hole, improving the waterproof rating of the mowing mechanism, and extending the service life of the mowing mechanism. Attached Figure Description

[0016] 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.

[0017] Figure 1 This is a cross-sectional view of a lawn mowing mechanism provided in an embodiment of the present invention; Figure 2 yes Figure 1 A magnified view of a section at point A in the middle; Figure 3 yes Figure 1 A magnified view of a section at point B in the middle; Figure 4 yes Figure 1 A magnified view of a section at point C; Figure 5 This is a partial structural schematic diagram of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 6 This is a partial structural schematic diagram of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 7 This is a partial structural schematic diagram of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 8 This is a schematic diagram of the rotating drive component of a lawn mowing mechanism provided in one embodiment of the present invention.

[0018] The reference numerals in the accompanying drawings are as follows: 1. Lifting drive assembly; 11. Motor; 12. Lead screw; 13. Nut; 14. Guide rod; 15. Sliding sleeve; 2. Rotary drive component; 21. Annular step; 3. Cutting blade assembly; 31. Fastening disc; 311. Second through hole; 32. Fastening sleeve; 33. Cutter disc; 331. Fastening groove; 332. Mounting groove; 34. Blade; 4. Compression sleeve; 41. Inner hole; 42. First inner annular part; 43. First outer annular part; 44. Second inner annular part; 45. Second outer annular part; 5. Housing; 51. Internal space; 52. First through hole; 53. Annular pressure groove; 6. First annular pressure plate; 7. Second annular pressure plate; 8. Lifting plate; 9. Casters. Detailed Implementation

[0019] 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.

[0020] like Figure 1 , Figure 5 as well as Figure 6 As shown, an embodiment of the present invention provides a lawn mowing mechanism, including a lifting drive assembly 1, a rotating drive component 2, a cutter assembly 3, a compression sleeve 4, and a housing 5 having an internal space 51. The bottom of the housing 5 has a first through hole 52 communicating with the internal space 51. The lifting drive assembly 1 is installed in the internal space 51. The output end of the lifting drive assembly 1 is connected to the rotary drive component 2. The output end of the rotary drive component 2 is connected to the cutter assembly 3. The lifting drive assembly 1 is used to drive the rotary drive component 2 to move up and down in the first through hole 52. One end of the compression sleeve 4 is fixedly mounted on the housing 5, and the other end of the compression sleeve 4 is fixedly mounted on the rotary drive 2. The rotary drive 2 is located in the inner hole 41 of the compression sleeve 4, and the compression sleeve 4 is used to block the first through hole 52.

[0021] The lifting drive assembly 1 includes, but is not limited to, pneumatic cylinders, hydraulic cylinders, and lead screw and nut assemblies; the rotary drive component 2 includes, but is not limited to, a motor 11; the compression sleeve 4 includes, but is not limited to, a corrugated sleeve, and can be made of materials such as plastic and silicone. The compression sleeve 4 is waterproof, flexible, and has a specific annular folding shape to achieve folding stability; the top of the rotary drive component 2 is located in the internal space 51, and the bottom of the rotary drive component 2 passes through the first through hole 52 and is located below the housing 5.

[0022] In this invention, the lifting drive assembly 1 can drive the rotating drive component 2 to move up and down. The cutter assembly 3 is installed at the output end of the rotating drive component 2, thereby adjusting the height of the cutter assembly 3 off the ground so that the grass is cut by the cutter assembly 3 and retains different heights. The bottom of the compression sleeve 4 is installed on the housing 5, and the top of the compression sleeve 4 is installed on the rotating drive component 2. The rotating drive component 2 is located in the inner hole 41 of the compression sleeve 4. The compression sleeve 4 is used to seal the first through hole 52. During the up and down movement of the rotating drive component 2, the compression sleeve 4 can be in a compressed or extended state, so that the compression sleeve 4 is always in the state of sealing the first through hole 52, preventing external dust, moisture, etc. from entering the internal space 51 through the first through hole 52, improving the waterproof rating of the mowing mechanism (for example, the waterproof rating of the mower can reach IPX6), and extending the service life of the mowing mechanism.

[0023] In one embodiment, such as Figure 1 and Figure 2 As shown, the bottom of the compression sleeve 4 is provided with a first inner annular portion 42 and a first outer annular portion 43. The first inner annular portion 42 abuts against the rotary drive member 2. The first inner annular portion 42 and the first outer annular portion 43 are used to block the first through hole 52. The lawnmower also includes a first annular pressure plate 6, which is used to press the first outer annular portion 43 onto the housing 5.

[0024] The first inner annular portion 42 protrudes toward the center of the inner hole 41, and the first outer annular portion 43 protrudes toward the outside of the inner hole 41. The first inner annular portion 42 and the first outer annular portion 43 are arranged in parallel. The first inner annular portion 42 presses against the side wall of the rotary drive member 2. The first annular pressure plate 6 can be fixedly installed on the housing 5 by screws, bolts, etc.

[0025] In this embodiment, the first inner annular portion 42 abuts against the side wall of the rotary drive component 2, thereby preventing broken grass, moisture, dust, etc. from entering the inner hole 41 of the compression sleeve 4; the first annular pressure plate 6 presses the first outer annular portion 43 onto the housing 5, facilitating the disassembly and assembly of the bottom of the compression sleeve 4 and the housing 5, and the first inner annular portion 42 and the first outer annular portion 43 serve to block the first through hole 52.

[0026] In one embodiment, such as Figure 6 As shown, the housing 5 is also provided with an annular pressure groove 53 surrounding the first through hole 52, and the first annular pressure plate 6 is used to press the first outer annular part 43 into the annular pressure groove 53.

[0027] The opening of the annular pressure groove 53 faces upward, and the first annular pressure plate 6 can be fixedly installed in the annular pressure groove 53 by screws, bolts, etc.

[0028] In this embodiment, the first annular pressure plate 6 presses the first outer annular portion 43 into the annular pressure groove 53. The first annular pressure plate 6 is less likely to misalign with the housing 5, thus ensuring the stability of the first annular pressure plate pressing the first outer annular portion 43 onto the housing 5.

[0029] In one embodiment, such as Figure 1 , Figure 3 as well as Figure 8 As shown, the top of the compression sleeve 4 is provided with a second inner annular portion 44 and a second outer annular portion 45, and the second inner annular portion 44 abuts against the rotary drive member 2. The lawnmower also includes a second annular pressure plate 7 and a lifting plate 8. The output end of the lifting drive assembly 1 is connected to the lifting plate 8. The rotary drive component 2 is mounted on the lifting plate 8. The second annular pressure plate 7 is used to press the second outer annular portion 45 onto the lifting plate 8.

[0030] The second inner annular portion 44 protrudes toward the center of the inner hole 41, and the second outer annular portion 45 protrudes toward the outside of the inner hole 41. The second inner annular portion 44 and the second outer annular portion 45 are arranged in parallel. The second inner annular portion 44 presses against the side wall of the rotary drive member 2. The second annular pressure plate 7 can be fixedly installed on the lifting plate 8 by screws, bolts, etc.

[0031] In this embodiment, the second inner annular portion 44 abuts against the side wall of the rotary drive member 2, and the second annular pressure plate 7 presses the second outer annular portion 45 onto the lifting plate 8, which facilitates the disassembly and assembly of the top plate of the compression sleeve 4 and the lifting plate 8.

[0032] In one embodiment, such as Figure 1 , Figure 3 as well as Figure 7 As shown, the rotary drive component 2 is also provided with an annular step 21, and the lifting plate 8 is used to press the second inner annular part 44 onto the annular step 21.

[0033] The annular step 21 is disposed on the top of the rotary drive component 2.

[0034] In this embodiment, the lifting plate 8 presses the second inner annular portion 44 onto the annular step 21, thereby ensuring the stability of the compression sleeve 4 fitted onto the rotary drive component 2.

[0035] In this application, the inner diameters of the first inner annular portion 42 and the second inner annular portion 44 are both smaller than the outer diameter of the rotary drive component 2. This allows both the first inner annular portion 42 and the second inner annular portion 44 to compress the sidewall of the rotary drive component 2, ensuring the sealing of the rotary drive component 2 within the compression sleeve 4. Simultaneously, during the lifting and lowering process of the lifting drive component 2, the first inner annular portion 42 moves along the outer wall of the rotary drive component 2, allowing it to scrape away impurities and ensuring the cleanliness of the rotary drive component 2. The compression sleeve 4 is flexible and compressible, with its upper and lower ends respectively held in place by a rigid first annular pressure plate 6 and a second annular pressure plate 7, thus achieving the waterproof function of the compression sleeve 4.

[0036] In one embodiment, such as Figure 5 As shown, the lifting drive assembly 1 includes a motor 11, a lead screw 12, a nut 13, a guide rod 14, and a sliding sleeve 15. The nut 13 is installed on the lifting plate 8 and threadedly connected to the lead screw 12. The output end of the motor 11 is connected to the lead screw 12. The guide rod 14 is installed in the internal space 51, and the sliding sleeve 15 is installed on the lifting plate 8 and slidably sleeved on the guide rod 14.

[0037] The motor 11 and the guide rod 14 are kept relatively stationary with respect to the housing 5. The guide rod 14 is fixed in the internal space 51 in the vertical direction and is rotatably installed in the internal space 51 in the vertical direction.

[0038] Specifically, the motor 11 drives the lead screw 12 to rotate, and the lead screw 12 drives the lifting plate 8 to move up and down through the nut 13. During the up and down movement of the lifting plate 8, the lifting plate 8 slides along the guide rod 14 through the sliding sleeve 15, thereby ensuring the stability of the up and down movement of the lifting plate 8.

[0039] In one embodiment, such as Figure 1 and Figure 4 As shown, the cutter assembly 3 includes a fastening disc 31, a fastening sleeve 32, a cutter disc 33, and a plurality of blades 34 circumferentially spaced on the cutter disc 33. The cutter disc 33 is provided with a fastening groove 331, and the bottom wall of the fastening groove 331 is provided with an installation groove 332. The fastening plate 31 is provided with a second through hole 311. The output end of the rotary drive 2 passes through the second through hole 311 and extends into the mounting groove 332. The fastening sleeve 32 is fixedly sleeved on the output end of the rotary drive 2 and is located in the mounting groove 332. The fastening disc 31 is fixedly installed in the fastening groove 331 and is used to limit the fastening sleeve 32 in the mounting groove 332.

[0040] The fastening sleeve 32 can be fixedly connected to the output end of the rotary drive 2 by means of a threaded structure, and the fastening disc 31 can be fixedly installed in the fastening groove 331 by means of screws, bolts, etc.

[0041] In this embodiment, the fastening disc 31 is slidably sleeved on the output end of the rotary drive 2. After the fastening sleeve 32 is fixedly sleeved on the output end of the rotary drive 2, the fastening disc 31 is then fixedly installed in the fastening groove 331. Thus, the fastening disc 31 can limit the fastening sleeve 32 within the mounting groove 332, thereby completing the installation of the cutter head 33 and the output end of the rotary drive 2. After removing the fastening disc 31 from the mounting groove 332, the cutter head 33 can be disassembled from the output end of the rotary drive 2, making the disassembly and assembly operation between the cutter head 33 and the output end of the rotary drive 2 convenient. In this embodiment, the disassembly and assembly operation between the cutter head 33 and the output end of the rotary drive 2 is convenient, thus facilitating the replacement of the cutter head 33.

[0042] In addition, both the mounting groove 332 and the fastening groove 331 are located on the top surface of the blade disc 33, so that the fastening disc 31 and the fastening sleeve 32 will not come into contact with the ground and wear during the movement of the mowing mechanism.

[0043] In one embodiment, such as Figure 1 As shown, the diameter of the cutter head 33 is larger than the inner diameter of the first through hole 52, and the cutter head 33 is located below the first through hole 52.

[0044] In this embodiment, the diameter of the cutter head 33 is relatively large, so the cutter head 33 can block the first through hole 52 from below, so as to prevent grass from entering the first through hole 52 and causing grass entanglement or blockage.

[0045] In one embodiment, such as Figure 1 As shown, the mowing mechanism also includes casters 9 mounted on the bottom of the housing 5.

[0046] Multiple casters 9 can be provided according to actual needs, and the casters 9 can support the lawn mowing mechanism.

[0047] 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 housing 5 is detachably mounted on the moving mechanism.

[0048] 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.

[0049] 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 lifting drive assembly, a rotating drive component, a cutting blade assembly, a compression sleeve, and a housing with an internal space, wherein the bottom of the housing has a first through hole communicating with the internal space; The lifting drive assembly is installed in the internal space. The output end of the lifting drive assembly is connected to the rotary drive component, and the output end of the rotary drive component is connected to the cutter assembly. The lifting drive assembly is used to drive the rotary drive component to move up and down in the first through hole. One end of the compression sleeve is fixedly mounted on the housing, and the other end of the compression sleeve is fixedly mounted on the rotary drive component. The rotary drive component is located in the inner hole of the compression sleeve, and the compression sleeve is used to block the first through hole.

2. The mowing mechanism of claim 1, wherein, The bottom of the compression sleeve is provided with a first inner annular portion and a first outer annular portion, the first inner annular portion abutting against the rotary drive component; the first inner annular portion and the first outer annular portion are used to block the first through hole; The lawnmower also includes a first annular pressure plate, which is used to press the first outer annular portion onto the machine casing.

3. The mowing mechanism of claim 2, wherein, The housing is also provided with an annular pressure groove surrounding the first through hole, and the first annular pressure plate is used to press the first outer annular part into the annular pressure groove.

4. The mowing mechanism of claim 1, wherein, The top of the compression sleeve is provided with a second inner annular portion and a second outer annular portion, and the second inner annular portion abuts against the rotary drive component. The lawnmower also includes a second annular pressure plate and a lifting plate. The output end of the lifting drive assembly is connected to the lifting plate, and the rotary drive component is mounted on the lifting plate. The second annular pressure plate is used to press the second outer annular portion onto the lifting plate.

5. The mowing mechanism of claim 4, wherein, The rotary drive component is also provided with an annular step, and the lifting plate is used to press the second inner annular part onto the annular step.

6. The mowing mechanism of claim 4, wherein, The lifting drive assembly includes a motor, a lead screw, a nut, a guide rod, and a sliding sleeve. The nut is mounted on the lifting plate and threadedly connected to the lead screw. The output end of the motor is connected to the lead screw. The guide rod is installed in the internal space, and the sliding sleeve is installed on the lifting plate and slidably sleeved on the guide rod.

7. The mowing mechanism of claim 1, wherein, The cutting tool assembly includes a fastening disc, a fastening sleeve, a cutting disc, and a plurality of blades circumferentially spaced on the cutting disc. The cutting disc is provided with a fastening groove, and the bottom wall of the fastening groove is provided with an installation groove. The fastening plate is provided with a second through hole, the output end of the rotary drive extends through the second through hole into the mounting groove, and the fastening sleeve is fixedly sleeved on the output end of the rotary drive and located in the mounting groove; The fastening disc is fixedly installed in the fastening groove and is used to limit the fastening sleeve in the installation groove.

8. The mowing mechanism of claim 7, wherein, The diameter of the cutter head is larger than the inner diameter of the first through hole, and the cutter head is located below the first through hole.

9. The mowing mechanism of claim 1, wherein, The mowing mechanism also includes casters mounted on the bottom of the housing.

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 housing is detachably mounted on the moving mechanism.

Images