Lawn harvester for architectural gardens

Abstract

The invention discloses a lawn harvester for building gardens, which belongs to the technical field of lawn harvesters, and mainly comprises a main body frame, a side cutting mechanism, a floating support angle adjusting mechanism, a universal wheel mechanism, a distance adjusting mechanism and a cutting mechanism, the floating supporting angle adjusting mechanism comprises a limiting ball cover, a limiting ball block and a rotating shaft rod fixed to the bottom end of the limiting ball block, a cutting disc is fixed to the bottom end of the rotating shaft rod, the cutting mechanism is installed in the middle of the bottom end of the cutting disc, and the side cutting mechanism is installed at the bottom end of one side of the main body frame. By means of the floating supporting angle adjusting mechanism and the cutting mechanism, the angle of the cutting disc can be conveniently adjusted in a self-adaptive mode according to fluctuation of the slope of the lawn of the building garden, so that uniform cutting of the slope lawn is achieved, harvesting can be conveniently conducted on long and narrow gaps through the side cutting mechanism, cutting missing can be prevented during mowing, and the mowing efficiency is improved. And the lawn harvesting effect can be improved.

Description

Technical Field

[0001] This application relates to the field of lawn harvester technology, specifically a lawn harvester for building landscaping. Background Technology

[0002] Lawn harvesters for architectural landscaping are core specialized equipment in the field of landscaping maintenance, primarily used in urban parks, residential communities, municipal green belts, and commercial complex landscape areas. Unlike harvesting farmland hay or mowing large areas of lawn in stadiums, lawn maintenance in architectural landscaping demands extremely high levels of landscape smoothness and edge refinement. It requires not only ensuring consistent mowing height in open areas but also seamlessly integrating the lawn along flower bed edges, around tree pits, and at building corners with hardscape features. Therefore, specialized lawn harvesters are essential tools for achieving these refined maintenance goals.

[0003] Currently, most mainstream push-type lawn mowers on the market adopt a fixed structure with a rigid connection between the cutting chassis and the frame. The cutting components (blades) are integrated into the middle of the machine body, with a fixed cutting width that is basically consistent with the machine body width. However, a significant characteristic of architectural and landscaping scenarios is the dense presence of obstacles, including numerous narrow gaps, right-angle corners, and curved edges formed by flower beds, tree pits, curbs, and building walls. Limited by the machine body width and the central cutting layout, traditional lawn mowers cannot cut close to these obstacles, and the machine body cannot enter narrow areas for operation. This results in "uncut strips" of varying widths around the obstacles. Weeds in these uncut areas often require secondary manual trimming by maintenance personnel using brush cutters or shears, significantly increasing labor intensity and maintenance costs. Due to inconsistent manual operation standards, it is difficult to guarantee the overall aesthetics of the landscape. The cutting height adjustment of existing fixed cutting chassis is mostly static mechanical adjustment. That is, after the relative height of the blade and the ground is preset by manual means, it cannot be adjusted in real time during operation. The lawn surface of architectural gardens is not absolutely flat. Due to the undulation of the terrain, soil settlement or uneven vegetation growth, there are local bumps and gentle slopes. When the lawnmower travels over such uneven terrain, the rigidly connected cutting chassis will tilt or bump synchronously with the body posture, causing the actual distance between the blade and the ground to change dynamically. In the concave areas, the cutting height is prone to insufficient cutting (missed cutting), and in the convex areas, the cutting depth is prone to excessive cutting, directly damaging the growth point and root system of the lawn grass, causing bald patches and yellowing of the lawn, seriously affecting the lawn's greening ability and landscape life.

[0004] Therefore, it is necessary to provide a lawn harvester for building landscaping to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a lawn harvester for building and landscaping, which, through the setting of a floating support angle adjustment mechanism and a cutting mechanism, makes it easy to adaptively adjust the angle of the cutting disc according to the undulation of the slope of the building and landscaping lawn, thereby achieving uniform cutting of the lawn on the slope. The setting of a side cutting mechanism makes it easy to harvest in narrow gaps, which helps to prevent missed cuttings during mowing and improves the lawn harvesting effect.

[0007] The technical solution adopted by this application to solve its technical problem is: a lawn harvester for building and landscaping, including a main frame, a side cutting mechanism, a floating support angle adjustment mechanism, a caster wheel mechanism, a distance adjustment mechanism and a cutting mechanism; A floating support angle adjustment mechanism is installed in the middle of the main frame. The floating support angle adjustment mechanism includes a limiting ball cover, a limiting ball block, and a rotating shaft fixed at the bottom end of the limiting ball block. A cutting disc is fixed at the bottom end of the rotating shaft. The cutting mechanism is installed in the middle of the bottom end of the cutting disc. The side cutting mechanism is installed at the bottom of one side of the main frame. The side cutting mechanism includes a support plate fixed to the bottom of one side of the main frame, an extension support plate slidably connected to the support plate, and a side harvesting knife rod rotatably connected to one end of the extension support plate. An adjusting mechanism is installed on a rotating shaft, and the adjusting mechanism includes a protective column that is slidably connected to the inner side of the rotating shaft. A cutting mechanism is installed in the middle of the bottom end of the cutting disc. The cutting mechanism includes a second motor that is bolted to a protective cavity opened at the bottom of the protective column. The output end of the second motor is connected to a shaft at the bottom. An anti-winding disc is fixed in the middle of the bottom end of the shaft. Multiple spiral blades are fixed at equal intervals along the circumferential direction on the anti-winding disc. Multiple segmented pieces are distributed at equal intervals along the circumferential direction at the bottom of the anti-winding disc. A fixing disc is fixed to the bottom end of the anti-winding disc with a clamp. Multiple harvesting blades are fixed at equal intervals along the circumferential direction on the outer side of the fixing disc.

[0008] Furthermore, a floating support cylinder is fixedly installed at each of the four corners of the top of the main frame by bolts. The output end of the floating support cylinder extends downward to provide a support rod. The floating support cylinder is used to drive the support rod to float up and down. A push-adjustment rod is fixed in the middle of the support rod, which can float up and down synchronously with the support rod. The bottom of the push-adjustment rod is in contact with the cutting disc.

[0009] Furthermore, a positioning disk is fixed outside the limiting ball cover, and the positioning disk is fixedly connected to the middle of the top of the main frame. The limiting ball block is movably embedded in the limiting ball cover and forms a ball hinge rotation fit. The limiting ball block can adaptively deflect relative to the limiting ball cover at multiple angles.

[0010] Furthermore, a guide groove is provided on the bracket plate, and a movable slider is fixed at the connection position between the extension support plate and the guide groove. The extension support plate is slidably connected to the guide groove through the movable slider. A sliding rod is fixed at the top of the movable slider, and the sliding rod is connected through one end of the extension support plate. The extension support plate can slide up and down along the sliding rod. A movable slider is also fixed at the other end of the sliding rod. A guide groove is also provided at the connection position between the movable slider and the main frame.

[0011] Furthermore, two limiting cavities are symmetrically formed on the rotating shaft, and limiting blocks are slidably connected in the limiting cavities. The number of limiting blocks matches the number of limiting cavities. The limiting blocks are symmetrically fixed to the top of the protective column. A sliding ring is fixedly connected to the outside of the limiting blocks and slides vertically with the outside of the rotating shaft. The protective column is slidably connected to the rotating shaft vertically through the limiting blocks and the sliding ring.

[0012] Furthermore, the universal wheel mechanism is installed at the end of the support rod away from the floating support cylinder. The universal wheel mechanism includes a buffer shrinkage cavity opened in the middle of one end of the support rod. A shrinkage rod is slidably connected in the buffer shrinkage cavity. A shock-absorbing buffer spring is provided between the shrinkage rod and the top of the inner side of the buffer shrinkage cavity. A universal wheel is fixed at the end of the shrinkage rod away from the support rod.

[0013] Furthermore, multiple positioning holes are equidistantly provided along the axial direction at the position where the rotating shaft intersects with the limiting cavity, and a second fixing bolt is threaded through the position where the sliding ring connects with the positioning hole, and one end of the second fixing bolt is detachably connected to the positioning hole by a thread.

[0014] Furthermore, a pusher is fixed on the main frame, a positioning mounting plate is provided at the connection position between the protective column and the second motor, and multiple connecting screws are fixed at equal intervals along the circumferential direction at the connection position between the protective column and the positioning mounting plate.

[0015] Furthermore, the support plate is symmetrically provided with multiple arc-shaped fixed slots, and a first fixing bolt passes through the connection position between the extension support plate and the fixed slot. The first fixing bolt is threadedly connected to the extension support plate, and a first motor is fixedly installed on the top of one end of the extension support plate by bolts. The output end of the first motor is connected to the side harvesting blade rod by transmission.

[0016] The beneficial effects of this application are: it facilitates the adaptive adjustment of the cutting disc angle according to the undulation of the slope of the lawn in the building garden, thereby achieving uniform cutting of the lawn on the slope, facilitating the harvesting of narrow gaps, preventing missed cuttings during mowing, and improving the lawn harvesting effect.

[0017] This application provides a lawn harvester for construction and landscaping. Through a floating support adjustment mechanism and a cutting mechanism, when the device is pushed to a sloping lawn area, the two casters located on the upper side of the slope are raised. The casters receive an upward support force from the ground, which is transmitted through a connecting component to the corresponding floating support cylinder, triggering its telescopic rod to retract. This causes the support rod, fixedly connected to the telescopic rod, to retract upward a certain distance. The push-adjustment rod, integrally formed in the middle of the support rod, moves upward synchronously with the support rod, the upward distance matching the height of the casters. The two casters located on the lower side of the slope sink with the slope, reducing the support force on the casters. The return spring inside the floating support cylinder pushes the telescopic rod to extend, causing the corresponding support rod to extend downward a certain distance. The push-adjustment rod, fixed to the support rod, moves downward synchronously, the downward distance matching the sinking height of the casters. The height difference between the four sets of push-adjustment rods due to the undulating slope will affect the cutting disc. An asymmetrical thrust is generated around the four edges. Under the constraint of the asymmetrical force of the push-adjustment rod and the ball joint, the cutting disc will adaptively deflect around the center of the limiting ball cover. The deflection direction is consistent with the slope tilt direction. This deflection process is synchronized with the terrain changes in real time, so that the cutting disc always remains parallel to the slope. The vertical distance between the harvesting blade on the fixed disc and the slope lawn surface is always maintained at the preset trimming height. The second motor drives the shaft to rotate around its own axis, and the shaft synchronously drives the anti-winding disc fixedly connected to it to rotate. The bottom of the anti-winding disc is rigidly connected to the fixed disc through a bolt group. Therefore, the rotating anti-winding disc will drive the fixed disc and multiple harvesting blades on the disc to rotate synchronously at high speed. When the grass stem enters the cutting area, the cutting edge of the harvesting blade makes direct contact with the grass stem. The grass stem is cut instantly by the shearing action of the cutting edge. There will be no problem of excessive cutting depth damaging the grass roots or insufficient cutting depth causing missed cutting due to the undulation of the slope, thus achieving uniform cutting of the slope lawn.

[0018] This application provides a lawn harvester for building landscaping. Through a side-cutting mechanism, when the device moves to a narrow gap formed by a flower bed, tree pit, curbstone, and building wall, it rotates an extension plate around a sliding rod to one end. This causes the side-cutting blade mounted on one end of the extension plate to move out of the support plate. Then, the extension plate slides downwards, causing it to move down along the sliding rod, simultaneously moving the side-cutting blade mounted on the extension plate downwards. When the extension plate engages with the support plate, the side-cutting blade simultaneously engages at a preset height from the lawn. At this point, based on the position of the narrow gap, the extension plate and sliding rod are pushed in the corresponding direction, causing them to slide along a guide groove to one end under the constraint of a moving slider. When the support plate moves the side-harvesting blade mounted on it to the designated position, the extension support plate is rotated to make a slight adjustment to the extension angle of the extension support plate. After adjustment, the first fixing bolt is rotated so that the bottom of the first fixing bolt can be inserted into the corresponding fixing slot. At this time, the side-harvesting blade will reach the designated position under the drive of the extension support plate. Then, the first motor is started, and the first motor drives the side-harvesting blade to rotate around its own axis. The side-harvesting blade drives the multiple blades fixed at its bottom to rotate synchronously at high speed. The blade edge makes direct contact with the grass stem, and the grass stem is cut instantly through the shearing action of the blade edge. This makes it easier to harvest narrow gaps, helps to prevent missed cuts during mowing, and improves the lawn harvesting effect.

[0019] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram of the first three-dimensional structure of the whole.

[0021] Figure 2 This is a schematic diagram of the overall second three-dimensional structure.

[0022] Figure 3 This is a three-dimensional structural diagram of the connection between the push rod and the cutting disc.

[0023] Figure 4 This is a schematic diagram of the overall cross-sectional structure.

[0024] Figure 5 This is a three-dimensional structural diagram showing the connection between the fixed disc and the anti-tangle disc.

[0025] Figure 6 A three-dimensional structural diagram of the connection between the protective column and the sliding ring.

[0026] Figure 7 This is a schematic diagram of the three-dimensional structure connecting the limiting ball block and the cutting disc.

[0027] Figure 8 This is a partial cross-sectional structural diagram of the support rod.

[0028] The following are the labeling elements in the figure: 1. Main frame; 2. Side cutting mechanism; 21. Support plate; 22. Guide groove; 23. Extension support plate; 24. First fixing bolt; 25. Fixing slot; 26. First motor; 27. Side harvesting blade; 28. Moving slider; 29. ​​Sliding rod; 3. Pusher; 4. Floating support angle adjustment mechanism; 41. Positioning plate; 42. Limiting ball cover; 43. Rotating shaft; 44. Cutting disc; 45. Floating support cylinder; 46. Support rod; 47. Push adjustment rod; 48. Limiting ball block 5. Caster wheel mechanism; 51. Caster wheel; 52. Retractable rod; 53. Buffer retractable cavity; 54. Shock-absorbing buffer spring; 6. Adjustable distance mechanism; 61. Limiting cavity; 62. Protective column cylinder; 63. Positioning hole; 64. Sliding ring; 65. Limiting block; 66. Second fixing bolt; 67. Connecting screw; 7. Cutting mechanism; 71. Second motor; 72. Anti-winding disc; 73. Spiral blade; 74. Dividing plate; 75. Fixing disc; 76. Harvesting blade; 77. Shaft. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0031] like Figure 1-8 As shown, this application provides a lawn harvester for building landscaping, including a main frame 1, a side cutting mechanism 2, a floating support angle adjustment mechanism 4, a caster wheel mechanism 5, a distance adjustment mechanism 6, and a cutting mechanism 7; A floating support angle adjustment mechanism 4 is installed in the middle of the main frame 1. The floating support angle adjustment mechanism 4 includes a limiting ball cover 42, a limiting ball block 48, and a rotating shaft 43 fixed to the bottom end of the limiting ball block 48. A cutting disc 44 is fixed to the bottom end of the rotating shaft 43. A cutting mechanism 7 is installed in the middle of the bottom end of the cutting disc 44. A floating support cylinder 45 is bolted to each of the four corners at the top of the main frame 1. A support rod 46 extends downward from the output end of the floating support cylinder 45. The dynamic support cylinder 45 drives the support rod 46 to float up and down. A push-adjustment rod 47 is fixed in the middle of the support rod 46, allowing it to float up and down synchronously with the support rod 46. The bottom of the push-adjustment rod 47 abuts against the cutting disc 44. A positioning disc 41 is fixed outside the limiting ball cover 42, and the positioning disc 41 is fixedly connected to the middle of the top of the main frame 1. A limiting ball block 48 is movably embedded in the limiting ball cover 42, forming a ball-joint rotational engagement. The limiting ball block 48 can adaptively deflect at multiple angles relative to the limiting ball cover 42. (Universal wheel mechanism) The mechanism 5 is installed at the end of the support rod 46 away from the floating support cylinder 45. The universal wheel mechanism 5 includes a buffer shrinkage cavity 53 opened in the middle of one end of the support rod 46. A shrinkage rod 52 is slidably connected in the buffer shrinkage cavity 53. A shock-absorbing buffer spring 54 is provided between the shrinkage rod 52 and the top of the inner side of the buffer shrinkage cavity 53. A universal wheel 51 is fixed at the end of the shrinkage rod 52 away from the support rod 46. The cutting mechanism 7 is installed in the middle of the bottom end of the cutting disc 44. The cutting mechanism 7 includes a component that is fixed by bolts to... The second motor 71 is located in the protective cavity at the bottom of the protective column 62. The output end of the second motor 71 is connected to the shaft 77 at the bottom. An anti-winding disc 72 is fixed at the middle of the bottom end of the shaft 77. Multiple spiral blades 73 are fixed at equal intervals along the circumferential direction on the anti-winding disc 72. Multiple dividing pieces 74 are distributed at equal intervals along the circumferential direction at the bottom of the anti-winding disc 72. A fixing disc 75 is fixed at the bottom end of the anti-winding disc 72 with a clamp. Multiple harvesting blades 76 are fixed at equal intervals along the circumferential direction on the outer side of the fixing disc 75.

[0032] In this embodiment, during ground leveling operations, the four casters 51 at the four corners of the bottom of the main frame 1 are on the same horizontal plane, and the telescopic rod of the floating support cylinder 45 is in the middle position. At this time, the cutting disc 44 remains horizontal, and the distance between the fixed disc 75 and the harvesting blade 76 on the fixed disc 75 and the ground is constant. The worker pushes the main frame 1 with the push handle 3 to move smoothly in a preset direction under the drive of the four casters 51. At the same time, the second motor 71 located in the middle of the cutting disc 44 starts, and the second motor 71 drives the shaft 77 to rotate around its own axis. The shaft 77 synchronously drives the anti-winding disc 72 fixedly connected to it to rotate. The bottom of the anti-winding disc 72 is bolted to the fixed disc 75. The system is rigidly connected, so the rotating anti-winding disc 72 will drive the fixed disc 75 and multiple harvesting blades 76 on the disc to rotate synchronously at high speed. When the grass stems enter the cutting area, the cutting edge of the harvesting blade 76 comes into direct contact with the grass stems. The cutting edge cuts the grass stems instantly through shearing action. At the same time, the centrifugal force generated by the high-speed rotation of the harvesting blade 76 will quickly throw the cut grass clippings out from the edge of the fixed disc 75. Meanwhile, the multiple circumferentially fixed dividing plates 74 and multiple spiral blades 73 on the anti-winding disc 72 will assist in the secondary cutting of the grass stems that have been wrapped around, preventing grass clippings from getting tangled between the anti-winding disc 72, the fixed disc 75 and the harvesting blades 76, thus ensuring the continuity and stability of the cutting operation. When the device is pushed to a sloping lawn area in a building or garden (such as a gentle green belt or the slope around a flower bed), the two casters 51 located on the upper side of the slope are raised. When the casters 51 on the upper side of the slope are raised, they receive an upward support force from the ground, which is transmitted to the corresponding floating support cylinder 45 through the connecting component. This triggers the telescopic rod of the telescopic rod to retract, causing the support rod 46, which is fixedly connected to the telescopic rod, to retract upward a certain distance. The push-adjustment rod 47, integrally formed in the middle of the support rod 46, moves upward synchronously with the support rod 46, and the upward movement distance matches the raising height of the casters 51. The two casters 51 located on the lower side of the slope sink with the slope. When the casters 51 on the lower side of the slope sink, the support force from the ground on the casters 51 decreases, and the return spring inside the floating support cylinder 45 pushes the telescopic rod to extend, causing the corresponding... The support rod 46 extends downwards at a certain distance, and the push-adjustment rod 47 fixed to the support rod 46 moves downwards at the same time. The downward distance matches the sinking height of the universal wheel 51. The height difference of the four sets of push-adjustment rods 47 due to the undulation of the slope will form an asymmetrical thrust on the four edges of the cutting disc 44. Under the constraint of the asymmetrical force of the push-adjustment rods 47 and the ball joint, the cutting disc 44 will adaptively deflect around the center of the limiting ball cover 42. The deflection direction is consistent with the slope tilt direction. This deflection process is synchronized with the terrain change in real time, so that the cutting disc 44 always remains parallel to the slope. The vertical distance between the harvesting blade 76 on the fixed disc 75 and the surface of the slope lawn is always maintained at the preset trimming height. There will be no problem of excessive cutting depth damaging the grass roots or insufficient cutting depth causing missed cutting due to the undulation of the slope, thereby achieving uniform cutting of the slope lawn. During the movement and pushing of the device, when vibration occurs due to uneven ground or motor operation, the caster wheel 51 will be subjected to vertical vibration force. At this time, the retraction rod 52 of the caster wheel 51 will retract adaptively into the buffer retraction chamber 53 above it. The shock-absorbing spring 54 in the buffer retraction chamber 53 is compressed, thereby effectively absorbing and buffering the vertical vibration force.

[0033] It should be noted that the second motor 71 is a 57BLF03 DC brushless motor with a rated voltage of 24V and a rated speed of 3000r / min. It features small size, high torque, and stable operation. The output shaft of the second motor 71 is coaxially fixedly connected to the shaft 77, with circumferential limiting achieved by a flat key and axial positioning achieved by a shoulder. Power is stably transmitted through the shaft 77. The floating support cylinder 45 is a mini single-acting pneumatic floating cylinder of model MAL16×50, powered by compressed air. (Moving version) The piston inside the cylinder is driven by air pressure to extend and retract the telescopic rod, and a return spring is provided inside the cylinder. When there is no air pressure input, the telescopic rod can passively float. The rotating shaft 43 at the top of the cutting disc 44 and the positioning disc 41 are connected by a ball joint rotational engagement between the limiting ball block 48 and the limiting ball cover 42. The limiting ball block 48 is movably embedded in the limiting ball cover 42 and can adaptively deflect at multiple angles within a range of ±15° around the center of the ball joint. The limiting ball cover 42 forms a wrapping limit on the limiting ball block 48, effectively preventing it from falling out.

[0034] like Figure 1 and Figure 4 As shown, the side-cutting mechanism 2 is installed at the bottom of one side of the main frame 1. The side-cutting mechanism 2 includes a support plate 21 fixed to the bottom of one side of the main frame 1, an extension support plate 23 slidably connected to the support plate 21, and a side-cutting blade 27 rotatably connected to one end of the extension support plate 23. The support plate 21 has a guide groove 22. A movable slider 28 is fixed at the connection position between the extension support plate 23 and the guide groove 22. The extension support plate 23 is slidably connected to the guide groove 22 through the movable slider 28. A sliding rod 29 is fixed to the top of the movable slider 28. The sliding rod 29 is connected through one end of the extension support plate 23. The extension plate 23 can slide up and down along the slide rod 29. A movable slider 28 is also fixed at the other end of the slide rod 29. A guide groove 22 is also provided at the position where the movable slider 28 is connected to the main frame 1. Multiple arc-shaped fixed slots 25 are symmetrically provided on the support plate 21. A first fixing bolt 24 passes through the connection position between the extension plate 23 and the fixed slot 25. The first fixing bolt 24 is threadedly connected to the extension plate 23. A first motor 26 is fixedly installed on the top of one end of the extension plate 23 by bolts. The output end of the first motor 26 is connected to the side harvesting blade 27 by transmission.

[0035] In this embodiment, when the device moves to the narrow gap formed by the flower bed, tree pit, curbstone, and building wall, the extension support plate 23 is rotated to rotate around the slide rod 29 to one end, causing the side harvester bar 27 installed at one end of the extension support plate 23 to move off the bracket plate 21. Then, the extension support plate 23 is slid downwards, causing it to move down along the slide rod 29, simultaneously moving the side harvester bar 27 installed on the extension support plate 23 downwards. When the extension support plate 23 is engaged with the bracket plate 21, the side harvester bar 27 is simultaneously engaged at a preset height from the lawn. At this point, according to the position of the narrow gap, the extension support plate 23 and the slide rod 29 are pushed in the corresponding direction, causing the extension support plate 23 and the slide rod 29 to move along the edge of the narrow gap under the constraint of the sliding block 28. The guide groove 22 slides to one end. When the extension support plate 23 moves the side harvester bar 27 installed on it to the designated position, the extension support plate 23 is rotated to make a slight adjustment to the extension angle of the extension support plate 23. After adjustment, the first fixing bolt 24 is rotated so that the bottom of the first fixing bolt 24 can be inserted into the corresponding fixing slot 25. At this time, the side harvester bar 27 will reach the designated position under the drive of the extension support plate 23. Then the first motor 26 is started, and the first motor 26 drives the side harvester bar 27 to rotate around its own axis. The side harvester bar 27 drives the multiple blades fixed at its bottom circumferentially to rotate synchronously at high speed. The blade edge makes direct contact with the grass stem and cuts the grass stem instantly through the shearing action of the blade edge.

[0036] It should be noted that the first motor 26 is a DC brushless motor of model 57BLF03. The motor has a rated voltage of 24V and a rated speed of 3000r / min. It features small size, high torque and stable operation. To ensure that the support rod 46 does not shift, loosen or vibrate during the cutting operation, positioning slots and positioning blocks can be set on the contact surface between the extension support plate 23 and the bracket plate 21.

[0037] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the adjusting mechanism 6 is installed on the rotating shaft 43. The adjusting mechanism 6 includes a protective column 62 that is slidably connected to the inner side of the rotating shaft 43. Two limiting cavities 61 are symmetrically opened on the rotating shaft 43. Limiting blocks 65 are slidably connected in the limiting cavities 61. The number of limiting blocks 65 matches the number of limiting cavities 61. The limiting blocks 65 are symmetrically fixed to the top of the protective column 62. A sliding ring 64 is fixedly connected to the outside of the limiting blocks 65 and is slidably connected to the outer side of the rotating shaft 43. The protective column 62 is connected to the rotating shaft 43 via the limiting blocks 65 and the sliding ring 64. The rotating shaft 43 is slidably connected up and down. Multiple positioning holes 63 are equidistantly provided along the axial direction at the position where the rotating shaft 43 intersects with the limiting cavity 61. A second fixing bolt 66 is threaded through the position where the sliding ring 64 connects with the positioning hole 63. One end of the second fixing bolt 66 is detachably threaded to the positioning hole 63. A pusher 3 is fixed on the main frame 1. A positioning mounting plate is provided at the connection position between the protective column 62 and the second motor 71. Multiple connecting screws 67 are equidistantly fixed along the circumferential direction at the connection position between the protective column 62 and the positioning mounting plate.

[0038] In this embodiment, before cutting the lawn, the worker can push the sliding ring 64 downward as needed. The sliding ring 64 will drive the protective column 62, which is fixedly connected to the limiting block 65, to move down an appropriate distance under the restriction of the limiting cavity 61. When the protective column 62 moves down, it will drive the cutting mechanism 7, which is fixed at the bottom by multiple connecting screws 67, to move down to the preset height. At this time, the second fixing bolt 66 is rotated. The second fixing bolt 66 will pass through the corresponding position of the sliding ring 64 and lock into the positioning hole 63 opened at the corresponding height on the rotating shaft 43, thus completing the height adjustment of the cutting mechanism 7.

[0039] It should be noted that the second motor 71 is fixed to the mounting clamp cavity at the bottom of the protective column 62 by bolts. Multiple heat dissipation holes are symmetrically distributed at both ends of the mounting clamp cavity to dissipate the heat generated by the second motor 71. The heat dissipation holes are opened on the side of the protective column 62 facing the limiting cavity 61 and are connected to the limiting cavity 61.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lawn harvester for building landscaping, comprising a main frame (1), a side cutting mechanism (2), a floating support angle adjustment mechanism (4), a caster wheel mechanism (5), a distance adjustment mechanism (6), and a cutting mechanism (7), characterized in that: A floating support angle adjustment mechanism (4) is installed in the middle of the main frame (1). The floating support angle adjustment mechanism (4) includes a limiting ball cover (42), a limiting ball block (48), and a rotating shaft (43) fixed at the bottom of the limiting ball block (48). A cutting disc (44) is fixed at the bottom of the rotating shaft (43). The cutting mechanism (7) is installed in the middle of the bottom of the cutting disc (44). The side cutting mechanism (2) is installed at the bottom of one side of the main frame (1). The side cutting mechanism (2) includes a support plate (21) fixed at the bottom of one side of the main frame (1), an extension support plate (23) slidably connected on the support plate (21), and a side harvesting knife bar (27) rotatably connected to one end of the extension support plate (23). The adjusting mechanism (6) is installed on the rotating shaft (43). The adjusting mechanism (6) includes a protective column (62) that is slidably connected to the inner side of the rotating shaft (43). The cutting mechanism (7) is installed in the middle of the bottom end of the cutting disc (44). The cutting mechanism (7) includes a second motor (71) that is fixed to the protective cavity at the bottom of the protective column (62) by bolts. The output end of the second motor (71) is connected to the shaft (77) at the bottom. An anti-winding disc (72) is fixed in the middle of the bottom end of the shaft (77). Multiple spiral blades (73) are fixed at equal intervals along the circumferential direction on the anti-winding disc (72). Multiple dividing pieces (74) are distributed at equal intervals along the circumferential direction at the bottom of the anti-winding disc (72). A fixing disc (75) is fixed at the bottom end of the anti-winding disc (72). Multiple harvesting blades (76) are fixed at equal intervals along the circumferential direction on the outer side of the fixing disc (75).

2. The lawn harvester for building landscaping according to claim 1, characterized in that: At the four corners of the top of the main frame (1), a floating support cylinder (45) is fixed by bolts. The output end of the floating support cylinder (45) extends downward to provide a support rod (46). The floating support cylinder (45) is used to drive the support rod (46) to float up and down. A push adjustment rod (47) is fixed in the middle of the support rod (46), which can float up and down synchronously with the support rod (46). The bottom of the push adjustment rod (47) is in contact with the cutting disc (44).

3. A lawn harvester for building landscaping according to claim 1, characterized in that: The limiting ball cover (42) is fixed with a positioning disk (41), which is fixedly connected to the middle of the top of the main frame (1). The limiting ball block (48) is movably embedded in the limiting ball cover (42) and forms a ball hinge rotation fit. The limiting ball block (48) can adaptively deflect relative to the limiting ball cover (42) at multiple angles.

4. A lawn harvester for building landscaping according to claim 1, characterized in that: The bracket plate (21) is provided with a guide groove (22). A movable slider (28) is fixed at the connection position between the extension support plate (23) and the guide groove (22). The extension support plate (23) is slidably connected to the guide groove (22) through the movable slider (28). A sliding rod (29) is fixed at the top of the movable slider (28). The sliding rod (29) is connected through one end of the extension support plate (23). The extension support plate (23) can slide up and down along the sliding rod (29). A movable slider (28) is also fixed at the other end of the sliding rod (29). A guide groove (22) is also provided at the connection position between the movable slider (28) and the main frame (1).

5. A lawn harvester for building landscaping according to claim 1, characterized in that: Two limiting cavities (61) are symmetrically opened on the rotating shaft (43). Limiting blocks (65) are slidably connected in the limiting cavities (61). The number of limiting blocks (65) matches the number of limiting cavities (61). The limiting blocks (65) are symmetrically fixed to the top of the protective column (62). A sliding ring (64) is fixedly connected to the outside of the limiting blocks (65) and is slidably connected to the outside of the rotating shaft (43). The protective column (62) is slidably connected to the rotating shaft (43) through the limiting blocks (65) and the sliding ring (64).

6. A lawn harvester for building landscaping according to claim 1, characterized in that: The universal wheel mechanism (5) is installed at the end of the support rod (46) away from the floating support cylinder (45). The universal wheel mechanism (5) includes a buffer shrinkage cavity (53) opened in the middle of one end of the support rod (46). A shrinkage rod (52) is slidably connected in the buffer shrinkage cavity (53). A shock-absorbing buffer spring (54) is provided between the shrinkage rod (52) and the top of the inner side of the buffer shrinkage cavity (53). A universal wheel (51) is fixed at the end of the shrinkage rod (52) away from the support rod (46).

7. A lawn harvester for building landscaping according to claim 5, characterized in that: Multiple positioning holes (63) are equidistantly provided along the axial direction at the position where the rotating shaft (43) intersects with the limiting cavity (61). A second fixing bolt (66) is threaded through the position where the sliding ring (64) connects with the positioning hole (63). One end of the second fixing bolt (66) is detachably connected to the positioning hole (63).

8. A lawn harvester for building landscaping according to claim 1, characterized in that: A pusher (3) is fixed on the main frame (1). A positioning mounting plate is provided at the connection position between the protective column (62) and the second motor (71). Multiple connecting screws (67) are fixed at equal intervals along the circumferential direction at the connection position between the protective column (62) and the positioning mounting plate.

9. A lawn harvester for building landscaping according to claim 1, characterized in that: The clamp plate (21) is symmetrically provided with multiple arc-shaped fixed slots (25). The connection position between the extension plate (23) and the fixed slot (25) is provided with a first fixing bolt (24). The first fixing bolt (24) is threadedly connected to the extension plate (23). The top of one end of the extension plate (23) is fixed with a first motor (26) by bolts. The output end of the first motor (26) is connected to the side harvesting blade (27) by transmission.

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