A mowing mechanism, a mowing accessory and a mowing robot

Abstract

The utility model relates to the technical field of mower, especially a kind of mowing mechanism, mowing accessory and mowing robot.The mowing mechanism includes rotary drive, cutter assembly and anti-blocking component;The cutter assembly includes cutter head and multiple blades being circumferentially spaced apart installed on the cutter head;The anti-blocking component includes support disc, anti-touch arm and two support arms, first through-hole is equipped on the support disc;The opposite ends of the support arm are connected with the support disc and the anti-touch arm respectively, and the support disc, the anti-touch arm and the support arm are provided with mowing space;The output end of the rotary drive is connected with the cutter head through the first through-hole.In the utility model, the cutter head and the anti-blocking component can play the function of blocking grass and preventing grass entanglement, ensure the smoothness of the rotary drive driving the cutter head assembly rotation, and further ensure the mowing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, and in particular to a lawnmower mechanism, lawnmower accessories and lawnmower robot. Background Technology

[0002] A lawnmower is a mechanical tool used to trim lawns, vegetation, etc. It utilizes an engine to drive blades at high speeds, significantly increasing weeding speed and saving considerable time and manpower for lawnmower workers. A lawnmower typically consists of a walking robot, blades, and a rotary drive unit. The rotary drive unit is installed inside the robot and connected to the blades; it drives the blades to rotate at high speed to cut the grass.

[0003] In the prior art, the blade is directly installed at the output end of the rotary drive. The grass cut by the blade is easy to get tangled at the output end of the rotary drive. When the output end of the rotary drive is tangled with grass, it affects the torque of the rotary drive and reduces the mowing efficiency. Summary of the Invention

[0004] This utility model provides a mowing mechanism, mowing accessories, and a mowing robot to solve the technical problems of grass entanglement in existing lawnmowers.

[0005] An embodiment of the present invention provides a lawn mowing mechanism, including a rotary drive, a cutter assembly, and an anti-clogging component; the cutter assembly includes a cutter disc and a plurality of blades circumferentially spaced on the cutter disc, and the cutter disc has an annular protrusion on the side opposite to the blades; The anti-clogging component includes an anti-clogging disc and an anti-clogging frame. The anti-clogging frame includes a support disc, an anti-touch arm, and two support arms. The support disc has a first through hole. The support arms are connected to the support disc and the anti-touch arm at opposite ends. A grass-scraping space is provided between the support disc, the anti-touch arm, and the support arms. Both the anti-blocking disc and the anti-blocking frame are mounted on the rotary drive component. The anti-blocking disc is provided with a second through hole. The output end of the rotary drive component passes through the first through hole and the second through hole and is connected to the cutter head. The annular protrusion is used to block the annular gap between the anti-blocking disc and the cutter head.

[0006] Optionally, the mowing mechanism further includes a fastening block, and the blade disc is provided with a mounting groove, the fastening block is mounted on the fastening block and inserted into the mounting groove.

[0007] Optionally, an internal space is provided between the anti-clogging disc and the cutter disc, and the second through hole communicates with the internal space; the fastening block is located in the internal space.

[0008] Optionally, the anti-clogging disc includes a vertical cylinder, an outer annular flange, and a flat plate with the second through hole, wherein the flat plate and the outer annular flange are respectively connected to opposite ends of the vertical cylinder; Both the flat plate and the support plate are mounted on the rotary drive component. The flat plate and the support plate are attached to the side of the rotary drive component away from the support component. The outer annular flange is located in the groove surrounded by the annular protrusion.

[0009] Optionally, the fastening block has a plurality of first cut surfaces spaced apart circumferentially; the inner wall of the mounting groove has a plurality of second cut surfaces spaced apart circumferentially; the first cut surfaces and the second cut surfaces are fitted together in a one-to-one correspondence.

[0010] Optionally, the cutter head is provided with a plurality of first fastening holes spaced apart in a circumferential direction, each of the blades is provided with a second fastening hole, and the cutter assembly further includes a plurality of fasteners; The blade is mounted on the cutter head by fasteners inserted into the first and second fastening holes.

[0011] Optionally, the cutter head includes a cutter head body and a plurality of protrusions circumferentially spaced on the cutter head body, the first fastening hole penetrates the protrusions, and the mounting groove is disposed on the side of the cutter head body opposite to the protrusions; The protrusions are provided with reinforcing ribs on both sides of the opposite side, which connect to the cutter head body.

[0012] Optionally, the cutter assembly further includes an anti-collision block installed at the bottom of the cutter head; the distance between the bottom of the anti-collision block and the cutter head is greater than the distance between the bottom of the blade and the cutter head.

[0013] An embodiment of this utility model also provides a lawn mowing accessory, including a moving mechanism and the aforementioned lawn mowing mechanism; the moving mechanism includes a housing, casters, and a lifting drive component; the housing has an internal accommodating space and a third through hole communicating with the accommodating space; the lifting drive component is installed in the internal accommodating space; the output end of the lifting drive component is connected to the rotating drive component; the lifting drive component is used to drive the rotating drive component to move in the third through hole; the casters are installed at the bottom of the housing.

[0014] An embodiment of this utility model also provides a lawn mowing robot, including a mobile robot and the above-mentioned lawn mowing accessories; the lawn mowing accessories are detachably mounted on the mobile robot.

[0015] In this invention, the rotary drive drives the cutter assembly to rotate at high speed, and the cutter assembly performs the function of cutting grass through the blades. The output end of the rotary drive passes through the first through hole of the support plate and the second through hole of the anti-clogging plate and is connected to the cutter disc. The support plate and the anti-clogging plate are both arranged around the output end of the rotary drive. The top of the cutter disc is provided with an annular protrusion, which surrounds the anti-clogging plate. Thus, the annular protrusion can prevent broken grass from entering the output end of the rotary drive, thereby avoiding the accident of grass entanglement at the output end of the rotary drive, ensuring the smoothness of the rotary drive driving the cutter disc assembly to rotate, and thus ensuring the grass cutting efficiency. In addition, the rotary drive unit drives the cutter assembly to rotate at high speed. The blade can cut grass, and some of the cut grass will fly upwards and be blocked by the support arm. Some of the flying grass pieces fall off, while some remain on the support arm. The grass-scraping space can also accommodate some of the grass pieces. While the cutter assembly rotates at high speed below the grass-scraping space, it will generate an adsorption force below the grass-scraping space. This adsorption force can attract the grass pieces in the grass-scraping space and cause them to fall off. As a result, the anti-clogging component will not have too many grass pieces remaining on it, avoiding the grass-clogging accident caused by too many grass pieces entangled on the anti-clogging component and the housing. In addition, the design of the grass-scraping space can reduce the weight of the anti-clogging component. 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 schematic diagram of the structure of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 2 A schematic diagram of the structure of the lawn mowing mechanism provided in one embodiment of this utility model from another perspective; Figure 3 An exploded structural diagram of a lawn mowing mechanism provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the cutter assembly of a lawn mowing mechanism provided in one embodiment of the present invention; Figure 5 This is a structural schematic diagram of a lawn mowing accessory provided in an embodiment of this utility model; Figure 6 This is a cross-sectional structural diagram of a lawn mowing accessory provided in an embodiment of the present invention.

[0018] The reference numerals in the accompanying drawings are as follows: 1. Rotary drive component; 2. Cutter assembly; 21. Cutter head; 211. Mounting groove; 212. Annular protrusion; 213. Second cutting surface; 214. Cutter head body; 215. Protrusion; 216. Reinforcing rib; 22. Blade; 23. Fastener; 24. Anti-collision block; 3. Anti-blocking frame; 31. Support plate; 311. First through hole; 32. Anti-collision arm; 33. Support arm; 34. Scraping space; 4. Fastening block; 41. First cutting surface; 50. Anti-blocking component; 5. Anti-blocking plate; 51. Second through hole; 52. Vertical cylinder; 53. Outer annular flange; 54. Flat plate; 6. Moving mechanism; 61. Housing; 611. Accommodation space; 612. Third through hole; 62. Caster wheel; 63. Lifting drive component. 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 Figures 1 to 3 As shown, an embodiment of the present invention provides a lawn mowing mechanism, including a rotary drive 1, a cutter assembly 2, and an anti-clogging component 50; the cutter assembly 2 includes a cutter disc 21 and a plurality of blades 22 circumferentially spaced on the cutter disc 21, and the cutter disc 21 has an annular protrusion 212 on the side opposite to the blades 22; The anti-clogging component 50 includes an anti-clogging disc 5 and an anti-clogging frame 3. The anti-clogging frame 3 includes a support disc 31, an anti-touch arm 32, and two support arms 33. The support disc 31 is provided with a first through hole 311. The support arms 33 are respectively connected to the support disc 31 and the anti-touch arm 32 at opposite ends. A grass-scraping space 34 is provided between the support disc 31, the anti-touch arm 32, and the support arms 33. Both the anti-blocking disc 5 and the support disc 31 are mounted on the rotary drive component 1. The anti-blocking disc 5 is provided with a second through hole 51. The output end of the rotary drive component 1 passes through the first through hole 311 and the second through hole 51 and is connected to the cutter head 21. The annular protrusion 212 is used to cover the annular gap between the anti-blocking disc 5 and the cutter head 21.

[0021] The rotary drive component 1 includes, but is not limited to, a motor. The number of blades 22 can be set according to actual needs; for example, 4, 6, or 8 blades 22 are installed on the cutter head 21, and the cutter head 21 extends to its side. The support plate 31, the anti-collision arm 32, and the support arm 33 are integrally formed. The support plate 31 is fixedly installed on the fixed end of the rotary drive component 1. The cutter assembly 2 and the anti-blocking frame 3 have gaps in both the vertical and horizontal directions, so that the anti-blocking frame 3 remains stationary while the rotary drive component 1 drives the cutter assembly 2 to rotate. The anti-blocking plate 5 and the cutter head 21 have gaps in both the horizontal and vertical directions, so that relative rotation can occur between the cutter head 21 and the anti-blocking plate 5. The anti-blocking plate 5 and the support plate 31 can be mounted on the rotary drive component 1 through the same connector.

[0022] Specifically, the rotary drive 1 drives the cutter assembly 2 to rotate at high speed, and the cutter assembly 2 performs the function of cutting grass through the blade 22. The output end of the rotary drive 1 passes through the first through hole 311 of the support plate 31 and the second through hole 51 of the anti-clogging plate 5 and is connected to the cutter disc 21. The support plate 31 and the anti-clogging plate 5 are both arranged around the output end of the rotary drive 1. The top of the cutter disc 21 is provided with an annular protrusion 212, which surrounds the anti-clogging plate 5. Thus, the annular protrusion 212 can block broken grass from entering the output end of the rotary drive 1, thereby avoiding the accident of grass entanglement at the output end of the rotary drive 1, ensuring the smoothness of the rotary drive 1 driving the cutter disc 21 assembly to rotate, and thus ensuring the grass cutting efficiency. In addition, the rotary drive 1 drives the cutter assembly 2 to rotate at high speed. The blade 22 can cut grass. Some of the cut grass will fly upward and be blocked by the support arm 33. Some of the flying grass pieces fall off and some stay on the support arm 33. The grass scraping space 34 can also accommodate some of the grass pieces. While the cutter assembly 2 rotates at high speed below the grass scraping space 34, it will generate an adsorption force below the grass scraping space 34. This adsorption force can adsorb the grass pieces in the grass scraping space 34 and make them fall off. Thus, there will not be too many grass pieces left on the anti-clogging frame 3, avoiding the grass clogging accident caused by too many grass pieces entangled on the anti-clogging frame 3 and the housing 61. In addition, the design of the grass scraping space 34 can reduce the weight of the anti-clogging frame 3.

[0023] In one embodiment, such as Figure 3 As shown, the mowing mechanism also includes a fastening block 4. The blade disc 21 is provided with a mounting groove 211. The fastening block 4 is mounted on the fastening block 4 and inserted into the mounting groove 211.

[0024] The mounting groove 211 is located at the center of the top of the cutter head 21, and the output end of the rotary drive 1 is connected to the cutter head 21 through the fastening block 4.

[0025] In this embodiment, the output end of the rotary drive 1 is connected to the cutter head 21 through the fastening block 4 inserted into the mounting groove 211. The fastening block 4 and the cutter head 21 have a large contact area, which ensures the tightness of the connection between the output end of the rotary drive 1 and the cutter head 21. The cutting blade assembly 2 is not prone to vibration during high-speed rotation, and the disassembly and assembly of the cutter head 21 and the rotary drive 1 are convenient.

[0026] In one embodiment, such as Figures 1 to 3 As shown, an internal space (not shown in the figure) is provided between the anti-blocking disc 5 and the cutter disc 21, and the second through hole 51 communicates with the internal space; the fastening block 4 is located in the internal space.

[0027] In this embodiment, the anti-clogging disc 5 can cover the fastening block 4 and the mounting groove 211, preventing broken grass from getting tangled in the output end of the rotating drive 1, and also preventing broken grass from getting stuck in the gap between the cutter disc 21 and the support disc 31, further improving the smoothness of the mowing mechanism's operation.

[0028] In one embodiment, such as Figure 3 As shown, the anti-blocking disc 5 includes a vertical cylinder 52, an outer annular flange 53, and a flat plate 54 with a second through hole 51. The flat plate 54 and the outer annular flange 53 are respectively connected to the opposite ends of the vertical cylinder 52. The plate 54 and the support disk 31 are both mounted on the rotary drive member 1. The plate 54 and the support disk 31 are attached to the side away from the rotary drive member 1. The outer annular flange 53 is located in the groove surrounded by the annular protrusion 212.

[0029] The vertical cylinder 52, the outer annular flange 53, and the flat plate 54 are integrally formed parts. The flat plate 54 is located at the top of the vertical cylinder 52, and the outer annular flange 53 is located at the bottom of the vertical cylinder 52.

[0030] In this embodiment, the support plate 31 is attached between the flat plate 54 and the rotary drive component 1, thereby ensuring the stability of the anti-blocking plate 5 and the anti-blocking frame 3 mounted on the rotary drive component 1. Furthermore, the design of the annular flange makes it more difficult for broken grass to enter the internal space, further preventing accidents such as entanglement and grass blockage in the mowing mechanism.

[0031] In one embodiment, such as Figure 3 andFigure 4 As shown, the fastening block 4 has a plurality of first cut surfaces 41 distributed circumferentially; the inner wall of the mounting groove 211 has a plurality of second cut surfaces 213 distributed circumferentially; the first cut surfaces 41 and the second cut surfaces 213 are fitted together in a one-to-one correspondence.

[0032] The number of the first cut surface 41 and the second cut surface 213 can be set according to actual needs; the design of the first cut surface 41 makes the side of the fastening block 4 uneven; the design of the second cut surface 213 makes the inner side of the mounting groove 211 uneven.

[0033] In this embodiment, the fastening block 4 is installed in the mounting groove 211, and the first cut surface 41 and the second cut surface 213 are fitted together in a one-to-one correspondence. Thus, during the process of the rotary drive 1 driving the cutter head 21 to rotate at high speed through the fastening block 4, it is not easy for the fastening block 4 and the cutter head 21 to slip, ensuring the stability of the cutter head 21 installed on the fastening block 4 and avoiding the accident of shaking during the high-speed rotation of the cutting blade assembly 2.

[0034] In one embodiment, such as Figure 1 and Figure 2 As shown, the cutter head 21 is provided with a plurality of first fastening holes distributed circumferentially, each of the blades 22 is provided with a second fastening hole, and the cutter assembly 2 also includes a plurality of fasteners 23; The blade 22 is mounted on the cutter head 21 by fasteners 23 inserted into the first and second fastening holes.

[0035] The fasteners 23 include, but are not limited to, screws, bolts, etc., and the blades 22 are mounted on the cutter head 21 in a one-to-one correspondence with the fasteners 23.

[0036] Specifically, the blade 22 is mounted on the cutter head 21 by the fastener 23. When the blade 22 is worn, it can be removed from the cutter head 21 and replaced with a new blade 22.

[0037] In this embodiment, the disassembly and assembly of the blade 22 and the cutter head 21 is simple.

[0038] In one embodiment, such as Figure 1 and Figure 2 As shown, the cutter head 21 includes a cutter head body 214 and a plurality of protrusions 215 circumferentially spaced on the cutter head body 214. The first fastening hole passes through the protrusions 215, and the mounting groove 211 is disposed on the side of the cutter head body 214 opposite to the protrusions 215. The protrusion 215 is provided with reinforcing ribs 216 on both sides of the opposite side, which are connected to the cutter head body 214.

[0039] The protrusion 215 is located at the bottom of the cutter head body 214, and the mounting groove 211 is located at the top of the cutter head body 214. The cutter head 21 is fixedly mounted on the protrusion 215 by the fastener 23, so that there is a certain gap between the blade 22 and the cutter head body 214, which avoids the blade 22 from sticking to the cutter head body 214 and causing the broken grass to easily get stuck in the gap between the cutter head 21 and the cutter head body 214, and ensures the stability of the blade 22 mounted on the cutter head 21. In addition, the design of the reinforcing rib 216 ensures the strength and rigidity of the cutter head 21.

[0040] like Figure 5 and Figure 6 As shown, another embodiment of this utility model also provides a lawn mowing accessory, including a moving mechanism 6 and the above-mentioned lawn mowing mechanism; the moving mechanism 6 includes a housing 61, casters 62 and a lifting drive 63, the housing 61 is provided with an internal accommodating space 611 and a third through hole 612 communicating with the accommodating space 611, the lifting drive 63 is installed in the internal accommodating space 611, the output end of the lifting drive 63 is connected to the rotary drive 1, and the lifting drive 63 is used to drive the rotary drive 1 to move in the third through hole 612; the casters 62 are installed at the bottom of the housing 61.

[0041] The lifting drive component 63 includes, but is not limited to, pneumatic cylinders, hydraulic cylinders, and linear motors.

[0042] In this embodiment, the lifting drive 63 can drive the rotating drive 1 and the cutter assembly 2 to rise and fall, so that the cutter assembly 2 can cut lawns of different heights. The blade disc 21 is located directly below the third through hole 612, and the size of the blade disc 21 is larger than the inner diameter of the third through hole 612. Therefore, the blade disc 21 can prevent cut grass from entering the third through hole 612, ensuring the stability of the lifting drive 63 driving the rotating drive 1 to move up and down in the third through hole 612. Furthermore, this lawn mowing accessory can be used and sold as an accessory, improving its market prospects. The anti-touch arm 32 is located to the side of the blade disc 21 assembly. The anti-touch arm 32 can prevent the user's hand from reaching into the cutter assembly 2, improving the safety of this lawn mowing accessory.

[0043] In one embodiment, such as Figure 1As shown, the cutting blade assembly 2 also includes an anti-touch block 24 installed at the bottom of the cutter head 21; the distance between the bottom of the anti-touch block 24 and the cutter head 21 is greater than the distance between the bottom of the blade 22 and the cutter head 22.

[0044] The anti-contact block 24 can be made of wear-resistant material; the anti-contact block 24 is installed at the center of the bottom of the cutter head 22.

[0045] In this embodiment, the bottom height of the anti-contact block 24 is lower than the bottom height of the blade 22, so the anti-contact block 24 can prevent the blade 22 and the blade disc 21 from contacting the ground or protruding foreign objects, thus avoiding accidents caused by impact to the blade 22 and extending the service life of the blade 22.

[0046] Another embodiment of this utility model provides a lawn mowing robot, including a mobile robot and the above-mentioned lawn mowing accessories; the lawn mowing accessories are detachably mounted on the mobile robot.

[0047] 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 rotary drive, a cutting blade assembly, and an anti-clogging component; the cutting blade assembly includes a cutter head and a plurality of blades circumferentially spaced on the cutter head, and the cutter head has an annular protrusion on the side opposite to the blades; The anti-clogging component includes an anti-clogging disc and an anti-clogging frame. The anti-clogging frame includes a support disc, an anti-touch arm, and two support arms. The support disc has a first through hole. The support arms are connected to the support disc and the anti-touch arm at opposite ends. A grass-scraping space is provided between the support disc, the anti-touch arm, and the support arms. Both the anti-clogging disc and the support disc are mounted on the rotary drive component. The anti-clogging disc has a second through hole. The output end of the rotary drive component passes through the first through hole and the second through hole and is connected to the cutter head. The annular protrusion is used to block the annular gap between the anti-clogging disc and the cutter head.

2. The mowing mechanism of claim 1, wherein, The mowing mechanism also includes a fastening block, and the blade disc is provided with a mounting groove. The fastening block is installed on the fastening block and inserted into the mounting groove.

3. The mowing mechanism of claim 2, wherein, An internal space is provided between the anti-clogging disc and the cutter head, and the second through hole communicates with the internal space; the fastening block is located in the internal space.

4. The mowing mechanism of claim 3, wherein, The anti-clogging disc includes a vertical cylinder, an outer annular flange, and a flat plate with a second through hole. The flat plate and the outer annular flange are respectively connected to opposite ends of the vertical cylinder. Both the flat plate and the support plate are mounted on the rotary drive component. The flat plate and the support plate are attached to the side of the rotary drive component away from the support component. The outer annular flange is located in the groove surrounded by the annular protrusion.

5. The mowing mechanism of claim 2, wherein, The fastening block has a plurality of first cut surfaces spaced apart circumferentially; the inner wall of the mounting groove has a plurality of second cut surfaces spaced apart circumferentially; the first cut surfaces and the second cut surfaces are fitted together in a one-to-one correspondence.

6. The mowing mechanism of claim 2, wherein, The cutter head is provided with a plurality of first fastening holes spaced apart in a circumferential direction, and each of the blades is provided with a second fastening hole. The cutter assembly also includes a plurality of fasteners. The blade is mounted on the cutter head by fasteners inserted into the first and second fastening holes.

7. The mowing mechanism of claim 6, wherein, The cutter disc includes a cutter disc body and a plurality of protrusions circumferentially spaced on the cutter disc body. The first fastening hole passes through the protrusions, and the mounting groove is disposed on the side of the cutter disc body opposite to the protrusions. The protrusions are provided with reinforcing ribs on both sides of the opposite side, which connect to the cutter head body.

8. The mowing mechanism of claim 1, wherein, The cutting blade assembly also includes an anti-collision block installed at the bottom of the cutter head; the distance between the bottom of the anti-collision block and the cutter head is greater than the distance between the bottom of the blade and the cutter head.

9. A grass cutting attachment characterised in that, The invention includes a moving mechanism and a lawn mowing mechanism as described in any one of claims 1 to 8; the moving mechanism includes a housing, casters, and a lifting drive; the housing has an internal accommodating space and a third through hole communicating with the accommodating space; the lifting drive is installed in the internal accommodating space; the output end of the lifting drive is connected to the rotary drive; the lifting drive is used to drive the rotary drive to move in the third through hole; the casters are installed at the bottom of the housing.

10. A mowing robot, characterized in that The lawn mower accessory as claimed in claim 9, wherein the lawn mower accessory is detachably mounted on the mobile robot. The lawn mower accessory as claimed in claim 9, wherein the lawn mower accessory is detachably mounted on the mobile robot.

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