Grassland operation equipment

Abstract

The embodiment of the utility model provides grassland operation equipment. The grassland operation equipment comprises a machine body, the walking assembly is arranged on the machine body and used for driving the grassland operation equipment to advance; the cutting assembly is arranged at the bottom of the machine body and used for trimming grass on the to-be-operated grassland; the grass comb assembly is arranged on the machine body and comprises a plurality of grass comb teeth, the grass comb teeth are arranged at intervals in the advancing direction perpendicular to the grassland operation equipment, the side, away from the cutting assembly, of each grass comb tooth comprises a vertical part and an inclined part, and the vertical part is located at the end close to the grassland to be operated; the device is used for contacting with an object in front of the grassland working equipment. According to the scheme, the continuous vertical sections and the inclined sections are arranged on the grass comb teeth at the front end of the machine body of the grassland operation equipment, so that the grassland operation equipment cannot move upwards along the feet of a user in the automatic walking process, potential safety hazards are effectively avoided, and the safety of the user is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of robots, and in particular to a grass working device. BACKGROUND

[0002] With the development of intelligent devices, automated grass working devices, such as mowing robots, have been widely used in lawn maintenance. Such devices can autonomously navigate, avoid obstacles, and complete mowing tasks, improving the efficiency of lawn management. However, in actual application, there may be certain safety hazards when the mowing robot is running. For example, when a user kneels on the lawn, the lower leg and foot may form a certain angle with the ground. In this case, the mowing robot may climb up along the user's foot during automatic operation and cause injury to the human body. Therefore, there is an urgent need for a mowing robot design scheme that can effectively avoid the above safety hazards. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the present application proposes a grass working device, which sets a vertical section and an inclined section at a certain angle on the grass comb teeth at the front end of the body of the grass working device, so that the grass working device cannot climb up along the user's foot during automatic walking, thereby effectively avoiding potential safety hazards and ensuring the safety of the user.

[0004] In a first aspect, the embodiment of the present application proposes a grass working device, which includes a body; a walking assembly provided on the body and used to drive the grass working device to move; a cutting assembly provided at the bottom of the body and used to trim the grass on the grass to be worked; a grass comb assembly provided on the body and located in front of the grass working device, the grass comb assembly including a plurality of grass comb teeth, the plurality of grass comb teeth being spaced apart along a direction perpendicular to the moving direction of the grass working device, each grass comb tooth including a vertical portion and an inclined portion on the side away from the cutting assembly, the vertical portion being located at one end close to the grass to be worked, and used to contact the object in front of the grass working device.

[0005] The embodiment of the present application sets a continuous vertical section and an inclined section on the grass comb teeth at the front end of the body of the grass working device. When there is a climbable object on the moving path of the grass working device, since the grass comb assembly can contact the climbable object first compared with the cutting assembly, the vertical portion and the inclined portion can be in turn contacted with the climbable object to form abutment and generate resistance to the grass working device and stop the continuous forward movement of the grass working device, that is, to avoid the contact between the cutting assembly and the climbable object, such as the user's leg and foot, to eliminate the potential safety hazards, and finally improve the safety of the grass working device.

[0006] In a possible implementation manner, the inclined portion includes a first inclined segment and a second inclined segment, the first inclined segment, the second inclined segment and the vertical portion are sequentially connected, and the second inclined segment is inclined from the end connected with the vertical portion to a direction away from the cutting assembly. This enables the first inclined segment, the second inclined segment and the vertical portion to abut against the climbable object at the same time or in sequence to generate multi-stage resistance to the lawn working equipment, which is beneficial to stop the continuous climbing of the lawn working equipment, avoids the contact between the cutting assembly and the climbable object, eliminates potential safety hazards, and finally improves the safety of the lawn working equipment.

[0007] In a possible implementation manner, an included angle between the second inclined segment and the advancing direction of the lawn working equipment is 35-60°. When the included angle between the second inclined segment and the advancing direction of the lawn working equipment is less than 35°, the inclination angle of the second inclined segment 5122 is less than the angle value corresponding to the foot model of the safety regulation, and the risk of contact with the cutter head is increased. When the included angle between the second inclined segment and the advancing direction of the lawn working equipment is greater than 60°, it is not conducive to generating multi-stage resistance when the lawn working equipment contacts the climbable object, and there is a risk that the lawn working equipment cannot stop continuous climbing.

[0008] In a possible implementation manner, a plurality of protruding portions are arranged on opposite sides of the grass comb assembly respectively, the protruding portions protrude in a direction perpendicular to the chassis of the machine body and in the advancing direction of the lawn working equipment. By making the protruding portions protrude in the direction perpendicular to the chassis, when the side of the lawn working equipment contacts the climbable object, the protruding portions can contact the climbable object, for example, the user's foot, to generate abutting resistance. By making the protruding portions protrude in the advancing direction of the lawn working equipment, the structural strength of the protruding portions can be enhanced, and greater abutting resistance can be generated. The combination of the two can prevent the lawn working equipment from contacting the user's foot through the sides of the machine body and climbing upward along the foot, eliminate potential safety hazards, and finally improve the safety of the lawn working equipment.

[0009] In a possible implementation manner, an end of the protruding portion away from the chassis is flush with an end of the vertical portion away from the inclined portion. This enables the protruding portion and the vertical portion to contact the climbable object, for example, the user's foot, to generate abutting resistance at the same time when the middle of the front end and the side of the front end of the lawn working equipment contact the climbable object, avoids the lawn working equipment from contacting the user's foot through the machine body and climbing upward along the foot, eliminates potential safety hazards, and finally improves the safety of the lawn working equipment.

[0010] In a possible implementation, the distance between any two adjacent protrusions is 20-30 mm. When the distance between any two adjacent protrusions is greater than 30 mm, when the front side of the grass working equipment contacts the climbable object, the climbable object is likely to first contact the machine body instead of the protrusions through the gap between any two adjacent protrusions, causing the grass working equipment to climb up the climbable object, increasing the risk of contact with the cutter head. When the distance between any two adjacent protrusions is less than 20 mm, the distribution of the plurality of protrusions is too compact, and when the grass working equipment encounters dense grass, a greater resistance is generated, which is not conducive to the normal operation of the grass working equipment.

[0011] In a possible implementation, the vertical portion has a ground clearance of 45-60 mm. If the ground clearance of the vertical portion is greater than 60 mm, when the grass working equipment contacts the climbable object, the vertical portion can not be able to contact the climbable object due to being too high, causing the climbable object to extend into the bottom of the grass working equipment and contact the cutting assembly, causing safety problems of the cutter head cutting. If the ground clearance of the vertical portion is less than 45 mm, when the grass working equipment performs the mowing work, the vertical portion that is too close to the grass to be worked is likely to contact the obstacles on the grass and generate a greater resistance, causing the passability problem of the grass working equipment motion stagnation, and reducing the working efficiency of the grass working equipment.

[0012] In a possible implementation, the distance between any two adjacent grass comb teeth is 10-20 mm. When the distance between any two adjacent grass comb teeth is greater than 20 mm, when the front side of the grass working equipment contacts the climbable object, the climbable object is likely to first contact the machine body instead of the vertical portion through the gap between any two adjacent grass comb teeth, causing the grass working equipment to climb up the climbable object, increasing the risk of contact with the cutter head. When the distance between any two adjacent grass comb teeth is less than 10 mm, the distribution of the plurality of grass comb teeth is too dense, and when the grass working equipment encounters dense grass, a greater resistance is generated, which is not conducive to the normal operation of the grass working equipment.

[0013] In a possible implementation, each grass comb tooth is provided with a blocking portion on the side close to the cutting assembly, and the ground clearance of the blocking portion is less than the ground clearance of the vertical portion. When the grass working equipment contacts the climbable object, if the abutting resistance provided by the vertical portion and the inclined portion is not enough to prevent the grass working equipment from continuing to climb up, the blocking portion can further form a new abutting resistance with the climbable object, which is conducive to avoiding the grass working equipment from continuing to climb, eliminating potential safety hazards, and ultimately improving the safety of the grass working equipment.

[0014] In a possible implementation manner, the chassis of the machine body comprises a handle part designed in an integrated manner with the grass comb assembly, and a recess is arranged on the side of the handle part away from the grass comb assembly. In an extreme case, when the grass working equipment climbs upward along the climbable object, and the cutting assembly has a cutting risk to the climbable object, the grass working equipment can be quickly lifted by the handle part through the recess to remove the cutting crisis. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of a grass working equipment according to an embodiment of the present application;

[0016] Figure 2 is a structural schematic diagram of the grass working equipment in Figure 1 from another perspective;

[0017] Figure 3 is a structural schematic diagram of the grass working equipment in Figure 1 from another perspective;

[0018] Figure 4 is a partial enlarged structural schematic diagram of A in Figure 3 ;

[0019] Figure 5 is a partial enlarged structural schematic diagram of B in Figure 3 ;

[0020] Figure 6 is a structural schematic diagram of a chassis according to an embodiment of the present application;

[0021] Figure 7 is a half-sectional structural schematic diagram of the chassis shown in Figure 6 ;

[0022] REFERENCE SIGNS

[0023] 1-grass working equipment; 2-machine body; 21-chassis; 211-handle part; 212-recess; 3-traveling assembly; 4-cutting assembly; 5-grass comb assembly; 51-grass comb tooth; 511-vertical part; 5111-fourth end; 512-inclined part; 5121-first inclined segment; 5122-second inclined segment; 51221-first end; 51222-second end; 513-blocking part; 5131-fifth end; 6-protruding part; 61-third end. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described below with reference to the drawings. Among them, the orientation terms mentioned in the embodiments of the present application, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", "top", "bottom", etc. are only the directions of the drawings. Therefore, the orientation terms used are for better and clearer illustration and understanding of the embodiments of the present application, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application.

[0025] With the development of intelligent devices, automated lawn working devices, such as mowing robots, have been widely used in lawn maintenance. Such devices can autonomously navigate, avoid obstacles and complete mowing tasks, improving the efficiency of lawn management. However, in actual application, there may be certain safety hazards when the mowing robot is running. For example, when a user kneels on the lawn, his calf and feet may form a certain angle with the ground. In this case, the mowing robot may climb up along the user's feet during automatic operation. If the cutterhead of the mowing machine fails to stop in time, it may cause cuts or other serious injuries to the user's legs or other exposed parts. This potential risk not only threatens the safety of the user, but also affects the user experience and market acceptance of the mowing robot. Therefore, there is an urgent need for a mowing robot design scheme that can effectively avoid the above safety hazards.

[0026] Figure 1 is a structural schematic diagram of a lawn working device 1 proposed by the embodiments of the present application, Figure 2 is Figure 1 is a structural schematic diagram of the lawn working device 1 in another view, in combination with Figure 1 and Figure 2 , the lawn working device 1 comprises a body 2, a walking assembly 3, a cutting assembly 4 and a grass comb assembly 5. The body 2 can comprise a chassis 21 and an upper shell 22, the upper shell being arranged on the chassis 21, the upper shell 22 can be used to carry device control buttons and visual components and other functional components. The visual component can be used to detect whether there is an obstacle in the current working path during the working process of the lawn working device 1. If there is, the characteristic information of the obstacle is obtained through the visual component, the obstacle avoidance path is generated according to the characteristic information, and the lawn working device 1 is controlled to work according to the obstacle avoidance path, thereby improving the working efficiency of the lawn working device 11. The walking assembly 3 can comprise two groups of driving wheels, which are respectively detachably connected to the opposite sides of the chassis 21 to drive the lawn working device 1 to move on the lawn surface and perform range work. The cutting assembly 4 can be arranged at the bottom of the body 2, i.e. on the side of the chassis 21 away from the upper shell 22, and the cutting assembly 4 can be used to cut the grass on the working lawn for weeding work.

[0027] The grass comb assembly 5 can be arranged on the machine body 2. Illustratively, along the advancing direction of the lawn working equipment 1, the cutting assembly 4 and the grass comb assembly 5 can be arranged in sequence on the chassis 21, that is, in the working process of the lawn working equipment 1, the grass comb assembly 5 can contact the to-be-worked lawn first compared with the cutting assembly 4, and then comb and straighten the grass leaves, so that the grass leaves stand upright, and ensure that the blades of the cutting assembly 4 can more evenly trim the lawn, and finally improve the mowing effect. It should be pointed out that in the above embodiment, the grass comb assembly 5 can be regarded as a front grass comb arranged in front of the lawn working equipment 1, and in another possible implementation manner, the grass comb assembly 5 can also be arranged at the rear of the lawn working equipment 1, that is, a rear grass comb. When the lawn working equipment 1 retreats, the rear grass comb can contact the to-be-worked lawn first compared with the cutting assembly 4, and then comb and straighten the grass leaves, so that the grass leaves stand upright, and ensure that the blades of the cutting assembly 4 can more evenly trim the lawn.

[0028] Figure 3 is Figure 1 a structural schematic view of the lawn working equipment from another perspective, Figure 4 is Figure 3 a partial enlarged structural schematic view of A in FIG. 8, in combination with Figure 3 and Figure 4 It is shown that the grass comb assembly 5 can include a plurality of grass comb teeth 51 extending perpendicularly to the chassis 21, and the plurality of grass comb teeth 51 are arranged in sequence along the direction between the two driving wheels. Each grass comb tooth 51 away from the cutting assembly 4 includes a vertical portion 511 and an inclined portion 512, and the vertical portion 511 is located at one end close to the to-be-worked lawn, that is, the vertical portion 511 is farther away from the chassis 21 compared with the inclined portion 512, so as to contact the object in front of the lawn working equipment 1. When there is a climbable object on the advancing path of the lawn working equipment 1, since the grass comb assembly 5 can contact the climbable object first compared with the cutting assembly 4, the vertical portion 511 and the inclined portion 512 can contact the climbable object in sequence to form abutment, generate resistance to the lawn working equipment 1, and stop the continuous advancing of the lawn working equipment 1, that is, avoid the cutting assembly 4 from contacting the climbable object, for example, the user's legs and feet, eliminate the potential safety hazard, and finally improve the safety of the lawn working equipment 1.

[0029] in combination with Figure 3 and Figure 4As shown, in a possible implementation, the ground clearance of the vertical portion 511 is 45-60 mm, that is, the distance between the fourth end 5111 of the vertical portion 511 and the grassland to be worked can be 45-60 mm. For example, the ground clearance of the vertical portion 511 can be 45 mm, or 46 mm, or 47 mm, or 48 mm, or 49 mm, or 50 mm, or 51 mm, or 52 mm, or 53 mm, or 54 mm, or 55 mm, or 56 mm, or 57 mm, or 58 mm, or 59 mm, or 60 mm. It can be understood that the ground clearance of the vertical portion 511 can also be other values in addition to the above values, as long as the ground clearance of the vertical portion 511 is 45-60 mm. If the ground clearance of the vertical portion 511 is greater than 60 mm, when the grassland working equipment 1 contacts the climbable object, the vertical portion 511 can not be able to contact the climbable object due to being too high, so that the climbable object extends into the bottom of the grassland working equipment 1 and contacts the cutting assembly, causing the safety problem of the cutter head cutting the climbable object. If the ground clearance of the vertical portion 511 is less than 45 mm, when the grassland working equipment 1 performs the mowing work, the vertical portion 511 which is too close to the grassland to be worked is easy to contact the obstacles on the grassland and generate a large resistance, causing the passability problem of the grassland working equipment 1 to stop moving, and reducing the working efficiency of the grassland working equipment 1.

[0030] In combination Figure 3 and Figure 4 As shown, in a possible implementation, the inclined portion 512 includes a first inclined segment 5121 and a second inclined segment 5122, and the first inclined segment 5121, the second inclined segment 5122 and the vertical portion 511 are sequentially connected in a direction perpendicular to the chassis 21. The second inclined segment 5122 includes a first end 51221 and a second end 51222, the first end 51221 is located at the intersection of the second inclined segment 5122 and the first inclined segment 5121, and the second end 51222 is located at the intersection of the second inclined segment 5122 and the vertical portion 511. The second inclined segment 5122 is inclined from the end connected to the vertical portion 511 to the direction away from the cutting assembly 4, that is, the second inclined segment 5122 is deflected by a certain angle relative to the vertical portion 511 towards the advancing direction of the grassland working equipment 1 with the second end 51222 as the center, and the direction between the first end 51221 and the second end 51222 forms a certain angle with the extension direction of the vertical portion 511. This makes the first inclined segment 5121, the second inclined segment 5122 and the vertical portion 511 can simultaneously or sequentially abut against the climbable object to generate multi-segment resistance to the grassland working equipment 1, which is beneficial to stop the grassland working equipment 1 from continuing to climb, avoid the contact between the cutting assembly 4 and the climbable object, eliminate the potential safety hazard, and ultimately improve the safety of the grassland working equipment 1.

[0031] In combination Figure 3 andFigure 4 As shown, in one possible implementation, the included angle between the second inclined section 5122 and the advancing direction of the turf working equipment 1 is 35-60°, that is, when the turf working equipment 1 walks on a flat ground, the included angle between the second inclined section 5122 and the horizontal plane is 35-60°; when the turf working equipment 1 walks on a surface with a certain slope, the included angle between the second inclined section 5122 and the slope is 35-60°. At this time, if the vertical part 511 is perpendicular to the advancing direction of the turf working equipment 1, the included angle between the second inclined section 5122 and the vertical part 511 is 125-150°. For example, the included angle between the second inclined section 5122 and the vertical part 511 can be 125°, or 130°, or 135°, or 140°, or 145°, or 150°. It can be understood that the included angle between the second inclined section 5122 and the vertical part 511 can also be other values other than the above values, as long as the included angle between the second inclined section 5122 and the vertical part 511 is 125-150°, that is, the included angle between the second inclined section 5122 and the advancing direction of the turf working equipment 1 is 35-60°. When the included angle between the second inclined section 5122 and the advancing direction of the turf working equipment 1 is less than 35°, the inclination angle of the second inclined section 5122 is less than the angle value corresponding to the safety regulation foot model, at this time, the second inclined section 5122 is excessively inclined compared to the direction perpendicular to the chassis 21. When the turf working equipment 1 approaches the climbable object, the second inclined section 5122 excessively inclined compared to the direction perpendicular to the chassis 21 will contact the climbable object before the vertical part 511, so that the machine body continues to climb along the second inclined section 5122 before the effective abutting resistance is generated at the vertical part 511, increasing the risk of contact with the cutter head. When the included angle between the second inclined section 5122 and the advancing direction of the turf working equipment 1 is greater than 60°, at this time, the inclination degree of the second inclined section 5122 compared to the direction perpendicular to the chassis 21 is smaller, which is not conducive to generating multi-stage resistance when the turf working equipment 1 contacts the climbable object, and there is a risk that the turf working equipment 1 cannot stop continuing to climb.

[0032] In combination Figure 3 and Figure 4As shown, in a possible implementation, the distance between any two adjacent grass comb teeth 51 is 10-20 mm. For example, the distance between any two adjacent grass comb teeth 51 can be 10 mm, or 11 mm, or 12 mm, or 13 mm, or 14 mm, or 15 mm, or 16 mm, or 17 mm, or 18 mm, or 19 mm, or 20 mm. It can be understood that the distance between any two adjacent grass comb teeth 51 can also be other values in addition to the above values, as long as the distance between any two adjacent grass comb teeth 51 is 10-20 mm. When the distance between any two adjacent grass comb teeth 51 is greater than 20 mm, when the front side of the grass working equipment 1 contacts the climbable object, the climbable object is likely to pass through the gap between any two adjacent grass comb teeth 51 and first contact the machine body, rather than first contact the vertical part 511, causing the grass working equipment 1 to climb up the climbable object, increasing the risk of contact with the cutter head. When the distance between any two adjacent grass comb teeth 51 is less than 10 mm, the distribution of the plurality of grass comb teeth 51 is too dense, and when the grass working equipment 1 encounters dense grass, it will generate a large resistance, which is not conducive to the normal operation of the grass working equipment 1.

[0033] Figure 5 is Figure 3 a local enlarged structure diagram at B in FIG. 8, in combination with Figure 3 and Figure 5 As shown, in a possible implementation, the relative two sides of the grass comb assembly 5 are respectively provided with a plurality of protruding parts 6. Illustratively, the grass comb assembly 5 can be located in the central region of the front end of the chassis 21, and the plurality of protruding parts 6 can be uniformly distributed on the left and right sides of the front end of the chassis 21. The protruding part 6 protrudes in a direction perpendicular to the chassis 21, that is, protrudes perpendicular to the advancing direction of the grass working equipment 1, that is, protrudes along the extension direction of the vertical part 511. This makes the protruding part 6 can contact the climbable object, such as the user's foot, to generate a resistance when the side of the grass working equipment 1 contacts the climbable object. The protruding part 6 protrudes in the direction of travel of the grass working equipment 1, which can enhance the structural strength of the protruding part 6, so that the protruding part 6 can generate greater resistance when it contacts the climbable object. The protrusion of the protruding part 6 in two directions can prevent the grass working equipment 1 from contacting the user's foot through the two sides of the machine body and climbing up along the foot, eliminating potential safety hazards, and ultimately improving the safety of the grass working equipment 1.

[0034] in combination with Figure 3 , Figure 4 and Figure 5As shown, in a possible implementation, the end of the protruding portion 6 away from the chassis 21 is flush with the end of the vertical portion 511 away from the inclined portion 512, i.e., the third end 61 of the protruding portion 6 is flush with the fourth end 5111 of the vertical portion 511, i.e., the third end 61 and the fourth end 5111 have the same height from the ground. This allows the protruding portion 6 and the vertical portion 511 to simultaneously contact the climbable object, such as the user's foot, to generate a resistance when the middle and side of the front end of the lawn care device 1 simultaneously contact the climbable object, thereby avoiding the body 2 of the lawn care device 1 contacting the user's foot and climbing upward along the foot, eliminating potential safety hazards, and ultimately improving the safety of the lawn care device 1.

[0035] In combination Figure 3 and Figure 5 As shown, in a possible implementation, the distance between any two adjacent protruding portions 6 is 20-30 mm. For example, the distance between any two adjacent protruding portions 6 can be 20 mm, or 21 mm, or 22 mm, or 23 mm, or 24 mm, or 25 mm, or 26 mm, or 27 mm, or 28 mm, or 29 mm, or 30 mm. It can be understood that the distance between any two adjacent protruding portions 6 can also be other values in addition to the above values, as long as the distance between any two adjacent protruding portions 6 is 20-30 mm. When the distance between any two adjacent protruding portions 6 is greater than 30 mm, when the side of the front end of the lawn care device 1 contacts the climbable object, the climbable object can pass through the gap between any two adjacent protruding portions 6 and contact the body 2 first instead of contacting the protruding portion 6 first, which causes the lawn care device 1 to climb upward along the climbable object, increasing the risk of contacting the cutterhead. When the distance between any two adjacent protruding portions 6 is less than 20 mm, the distribution of the plurality of protruding portions 6 is too compact, which generates a large resistance when the lawn care device 1 encounters dense grass, which is not conducive to the normal operation of the lawn care device 1.

[0036] Figure 6 is a structural schematic diagram of the chassis 21 proposed in the embodiments of the present application, in combination Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, in a possible implementation, each of the grass comb teeth 51 is provided with a blocking portion 513 on the side close to the cutting assembly 4, that is, the blocking portion 513 is located on the side away from the grassland to be worked, and the cutting assembly 4, the blocking portion 513 and the vertical portion 511 are arranged in sequence in the advancing direction of the grassland working device 1. The ground clearance of the blocking portion 513 is less than that of the vertical portion 511, that is, the fifth end 5131 of the blocking portion 513 protrudes in a direction perpendicular to the advancing direction of the grassland working device 1 compared with the fourth end 5111 of the vertical portion 511. When the grassland working device 1 is in contact with the climbable object, if the abutting resistance provided by the vertical portion 511 and the inclined portion 512 is not enough to prevent the grassland working device 1 from continuing to climb upward, the blocking portion 513 can further form a new abutting resistance with the climbable object, which is conducive to avoiding the grassland working device 1 from continuing to climb, eliminating potential safety hazards, and ultimately improving the safety of the grassland working device 1.

[0037] Figure 7 is Figure 6 As shown in a schematic diagram of a half-section structure of the chassis 21, in combination with Figure 3 and Figure 7 As shown, in a possible implementation, the chassis 21 includes a handle portion 211 designed in an integrated manner with the grass comb assembly 5, and the handle portion 211 is provided with a groove 212 on the side away from the grass comb assembly 5. The groove 212 can be used for the hand to be inserted and abut against the handle portion 211 to lift the entire grassland working device 1. When it is necessary to change the working site of the grassland working device 1, the handle portion 211 can be directly lifted at the groove 212 for large-range transfer. In an extreme case, when the grassland working device 1 climbs upward along the climbable object, causing a cutting risk of the cutting assembly to the climbable object, the grassland working device 1 can be quickly moved away through the handle portion 211 designed in an integrated manner with the grass comb assembly 5 at the front end of the chassis 21 to eliminate the cutting crisis.

[0038] To sum up, the embodiment of the present application sets the vertical segment and the inclined segment at a certain angle on the grass comb tooth at the front end of the body of the grassland working device, so that the grassland working device cannot climb upward along the user's foot during automatic walking, thereby effectively avoiding potential safety hazards and protecting the safety of the user.

[0039] For the convenience of understanding, the related technical terms involved in the embodiments of the present application are explained and described below.

[0040] In the description of the embodiments of the present application, "a plurality of" means two or more, unless otherwise specified.

[0041] The terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as implying or implying relative importance or implicitly indicating the number of technical features indicated. The features defined with "first", "second" can explicitly or implicitly include one or more of the features.

[0042] The orientation terms mentioned in the embodiments of the present application, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top", "bottom", etc. are only the direction of the drawings. The orientation terms are used to better and more clearly illustrate and understand the embodiments of the present application, and are not to be construed as indicating that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, etc., and therefore cannot be construed as limiting the embodiments of the present application.

[0043] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for part 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 lawn care device, characterized in that, The utility model relates to a lawn working equipment, comprising: a machine body; a walking assembly arranged on the machine body and used to drive the lawn working equipment to move; a cutting assembly arranged at the bottom of the machine body and used to trim grass on a lawn to be worked on; a grass comb assembly arranged on the machine body, the grass comb assembly comprising a plurality of grass comb teeth, the plurality of grass comb teeth being arranged at intervals in a direction perpendicular to the moving direction of the lawn working equipment, each of the grass comb teeth comprising a vertical portion and an inclined portion on the side away from the cutting assembly, the vertical portion being located at one end close to the lawn to be worked on and used to contact objects in front of the lawn working equipment.

2. The lawn care device of claim 1, wherein, The inclined portion comprises a first inclined segment and a second inclined segment, the first inclined segment, the second inclined segment and the vertical portion being connected in sequence, and the second inclined segment being inclined from the end connected with the vertical portion towards the direction away from the cutting assembly.

3. The lawn care device of claim 2, wherein, The included angle between the second inclined segment and the moving direction of the lawn working equipment is 35-60°.

4. The lawn care device of claim 1, wherein, The grass comb assembly is provided with a plurality of protruding portions on opposite sides thereof, the protruding portions being protruded in a direction perpendicular to the chassis of the machine body and in the moving direction of the lawn working equipment.

5. The lawn care device of claim 4, wherein, The end of the protruding portion away from the chassis is flush with the end of the vertical portion away from the inclined portion.

6. The lawn care device of claim 4, wherein, The distance between any two adjacent protruding portions is 20-30 mm.

7. The lawn care device of claim 1, wherein, The ground clearance of the vertical portion is 45-60 mm.

8. The lawn care device of claim 1, wherein, The distance between any two adjacent grass comb teeth is 10-20 mm.

9. The lawn care device of claim 1, wherein, Each of the grass comb teeth is provided with a blocking portion on the side close to the cutting assembly, and the ground clearance of the blocking portion is less than that of the vertical portion.

10. The lawn care device of claim 1, wherein, The chassis of the machine body comprises a handle portion designed in an integrated manner with the grass comb assembly, and the handle portion is provided with a groove on the side away from the grass comb assembly.

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