A lawn cutting device mounted on a tractor

Abstract

The application relates to a lawn cutting device mounted on a tractor, belonging to the technical field of garden machinery, comprising a support frame, a mowing mechanism and an angle adjusting assembly; the mowing mechanism comprises a driving machine and a speed reduction assembly, the driving machine drives the rotation of a mowing blade through the speed reduction assembly; the angle adjusting assembly comprises a traction rod, a first positioning piece, a connecting rod and a second positioning piece, the traction rod is rotationally arranged on the support frame, the first positioning piece positions the traction rod on the support frame, the connecting rod is rotationally arranged on the traction rod, and the second positioning piece positions the connecting rod on the traction rod; the angle adjusting assembly further comprises a bidirectional screw rod for adjusting the lifting height of the traction rod; a height adjusting assembly is arranged on the support frame, the height of the mowing mechanism is adjusted through a height adjusting frame and a height adjusting screw rod; a splash-proof plate is further arranged on the support frame; the device places the mowing mechanism on one side of the tractor through angle adjustment, avoids lawn rolling, ensures upright cutting of grass stems, and improves the flatness and cutting effect of the lawn.

Description

Technical Field

[0001] This application relates to the technical field of garden machinery, and in particular to a lawn mower mounted on a tractor. Background Technology

[0002] Most lawnmowers currently on the market use a towed design, where a small trolley pulls the lawnmower unit from the front, with the mower unit following closely behind. This layout leads to an inherent problem with the work sequence: the towed trolley will roll over the grass before the mower.

[0003] Because of the heavy weight of the tractor unit, many of the originally upright grass stems flatten and lie flat on the ground after being crushed by the tires. Subsequent mowing operations, with their cutting devices primarily designed for cutting upright stems, are significantly less effective at cutting flattened stems. Many bent stems may slip under the blades and remain uncut. Even if some of the flattened grass is cut, the deformed stems from the crushing process result in a noticeable difference in height between the remaining grass and the surrounding uncrushed grass when it grows back upright. This inconsistency in height gives the mowed lawn a mottled, uneven appearance, severely damaging its overall aesthetics. Furthermore, compaction also harms grass growth, affecting the long-term health of the lawn. Utility Model Content

[0004] To address the problem of uneven and mottled lawn surfaces caused by tractor-trailers running over lawns, this application provides a lawn cutting device installed on a tractor-trailer.

[0005] The lawn mowing device installed on a tractor provided in this application adopts the following technical solution: A lawn mowing device mounted on a tractor includes a support frame, a mowing mechanism, and an angle adjustment assembly. The mowing mechanism includes a drive motor and a reduction gear assembly. The drive motor is mounted on the support frame, and the reduction gear assembly is located at the output end of the drive motor. A mowing blade is provided at the output end of the reduction gear assembly. The angle adjustment assembly includes a traction rod, a first positioning element, a connecting rod, and a second positioning element. One end of the traction rod is rotatably mounted on the support frame. The first positioning element is mounted on the traction rod and is used to position the traction rod on the support frame. The connecting rod is rotatably mounted on the traction rod. The second positioning element is mounted on both the connecting rod and the traction rod and is used to position the connecting rod on the traction rod.

[0006] By adopting the above technical solution, the support frame provides overall support, the mowing mechanism performs the cutting operation, and the angle adjustment component adjusts the horizontal position of the mowing mechanism relative to the tractor. The traction rod, first positioning component, connecting rod, and second positioning component in the angle adjustment component work together to position the mowing mechanism to one side of the tractor, preventing the tractor from running over the lawn and ensuring that the grass stems remain upright, thereby improving the cutting effect and the flatness of the lawn.

[0007] Preferably, the first positioning component includes a bracket, a pull rod, and a spring. An angle adjustment frame is rotatably mounted on the support frame, and one end of the traction rod is rotatably mounted on the angle adjustment frame. An arc-shaped plate is provided on the angle adjustment frame, and the arc-shaped plate is vertically mounted on the support frame. A snap-fit ​​hole is provided on the arc-shaped plate. The bracket is mounted on the traction rod, and a spring is sleeved on the pull rod. One end of the spring abuts against the pull rod, and the other end of the spring abuts against the bracket. The end of the pull rod extends into the snap-fit ​​hole.

[0008] By adopting the above technical solution, the bracket, pull rod, and spring in the first positioning component work together to allow users to easily adjust and fix the deflection angle between the traction rod and the support frame. The elastic force of the spring causes the pull rod to automatically engage with the locking hole on the arc plate, achieving stability and ease of operation in angle locking, and ensuring the reliability of the position adjustment of the mowing mechanism.

[0009] Preferably, the second positioning component includes a positioning rod and a pin. The end of the connecting rod is provided with a sector-shaped frame, and the other end of the traction rod extends into the sector-shaped frame and is rotatably connected to the sector-shaped frame. The sector-shaped frame is also provided with a plug-in hole, and the traction rod is provided with a positioning hole. The positioning rod is inserted into the plug-in hole and the positioning hole. The positioning rod is used to position the traction rod on the connecting rod. The pin is used to position the positioning rod on the connecting rod and the traction rod.

[0010] By adopting the above technical solution, the second positioning component fixes the relative angle between the connecting rod and the traction rod through a positioning rod and a pin. After the insertion hole on the fan-shaped frame is aligned with the positioning hole on the traction rod, the positioning rod is inserted and locked by the pin, providing a firm connection, preventing angle changes during operation, and ensuring the stability of the side position of the mowing mechanism.

[0011] Preferably, the deceleration assembly includes a deceleration belt and a rotating support shaft. A drive pulley is provided on the output shaft of the drive motor. The rotating support shaft is vertically mounted on the support frame and a driven pulley is provided on the rotating support shaft. A deceleration belt is sleeved between the drive pulley and the driven pulley. The diameter of the drive pulley is smaller than the diameter of the driven pulley. A grass-cutting blade is provided on the rotating support shaft.

[0012] By adopting the above technical solution, the deceleration assembly utilizes the design that the diameter of the active pulley is smaller than that of the driven pulley to transmit power through the deceleration belt, thereby reducing the rotational speed of the rotating support shaft and increasing the torque, so that the mowing blades rotate at an appropriate speed, improving cutting efficiency and the smoothness of power transmission.

[0013] Preferably, the support frame is provided with a protective cover, and the driving pulley, the reduction belt and the driven pulley are all disposed inside the protective cover.

[0014] By adopting the above technical solution, the protective cover covers the drive pulley, reduction belt and driven pulley, effectively preventing weeds, dust and other debris from entering the inside of the reduction assembly, reducing component wear and failure risk, extending the service life of the device and enhancing operational safety.

[0015] Preferably, the support frame is further provided with a height adjustment component, which includes a height adjustment frame and a height adjustment screw. One end of the height adjustment frame is rotatably mounted on the support frame, and the height adjustment screw is vertically rotatably mounted on the support frame. An adjustment support column is provided on the height adjustment frame, and the adjustment support column is located at the other end of the height adjustment frame. The height adjustment screw is threadedly connected to the adjustment support column. The height adjustment screw is used to adjust the lifting height of the height adjustment frame.

[0016] By adopting the above technical solution, the height adjustment component, through the cooperation of the height adjustment frame and the height adjustment screw, adjusts the height of the mowing mechanism relative to the ground. Rotating the height adjustment screw drives the adjustment support column to move, causing the height adjustment frame to swing, thereby adjusting the height of the support wheel and achieving precise control of the mowing blade's height off the ground to meet different mowing needs.

[0017] Preferably, the angle adjustment assembly further includes a bidirectional threaded rod, one end of which is rotatably mounted on the support frame, and the other end of which is rotatably mounted on the traction rod. The bidirectional threaded rod is used to adjust the lifting height of the end of the traction rod away from the support frame.

[0018] By adopting the above technical solution, the bidirectional threaded tie rod in the angle adjustment component changes its overall length by rotating the adjustment support rod, and finely adjusts the lifting height of the end of the traction rod away from the support frame, so that the hook of the connecting rod matches the height of the connection point of the tractor vehicle, thereby enhancing the compatibility and operational flexibility of the device with the tractor vehicle.

[0019] Preferably, the support frame is also provided with a splash guard.

[0020] By adopting the above technical solution, the anti-splash plate is installed on the support frame, which effectively blocks the splashing of grass clippings and debris during the cutting process, reduces environmental pollution and safety hazards, and improves operational safety.

[0021] In summary, this application includes the following beneficial technical effects: The angle adjustment assembly positions the mowing mechanism to the side of the tractor, preventing grass stems from being crushed and ensuring they remain upright. This allows the mowing blades to effectively cut the grass, resulting in a uniform and even lawn height after mowing. The angle adjustment assembly, including the traction rod, first positioning element, connecting rod, and second positioning element, works together to achieve lateral positioning of the mowing mechanism. A two-way threaded rod further fine-tunes the traction rod angle to match the tractor's connection point. The height adjustment assembly, via a height adjustment bracket and screw, adjusts the height of the mowing blades off the ground, controlling the mowing height. The reduction gear in the mowing mechanism ensures the blades cut efficiently with appropriate torque and speed. A splash guard reduces grass clippings, improving safety. The overall structure solves the problems of incomplete cutting and mottled surfaces caused by lawn compaction, improving the lawn's aesthetics and health. Attached Figure Description

[0022] Figure 1 This is a schematic diagram illustrating the overall structure in the embodiments of this application.

[0023] Figure 2 This is a structural schematic diagram illustrating the lawn mowing mechanism in the embodiments of this application.

[0024] Figure 3 This is a schematic diagram illustrating the structure of the belt tension adjustment component in the embodiments of this application.

[0025] Figure 4 This is a structural schematic diagram illustrating the height adjustment component in an embodiment of this application.

[0026] Figure 5 This is a schematic diagram illustrating the structure of the angle adjustment component in the embodiments of this application.

[0027] Explanation of reference numerals in the attached drawings: 1. Support frame; 11. Splash guard; 12. Protective cover; 121. Waist-shaped groove; 122. Mounting hole; 13. Angle adjustment frame; 131. Arc-shaped plate; 1311. Snap-fit ​​hole; 14. Rotating support column; 15. First support; 151. First support ball; 2. Mowing mechanism; 21. Drive motor; 211. Drive pulley; 22. Reduction assembly; 221. Reduction belt; 222. Rotating support shaft; 2221. Driven pulley; 223. Mowing support plate; 2231. Mowing blade; 23. Belt tension adjustment assembly; 231. Tension adjustment column; 2311. Tension adjustment screw; 232. Adjusting nut; 233. Mounting bolt; 3. Height adjustment assembly; 31. Height adjustment 311. Frame; 312. Support wheel; 313. Adjustable support column; 32. Height adjustment screw; 321. Actuating lever; 4. Angle adjustment assembly; 41. Traction rod; 411. Second support; 4111. Second support ball; 412. Positioning hole; 42. First positioning component; 421. Bracket; 422. Pull rod; 4221. Limiting block; 423. Spring; 43. Connecting rod; 431. Sector frame; 4311. Insertion hole; 432. Hook; 44. Second positioning component; 441. Positioning rod; 442. Pin; 45. Bidirectional threaded pull rod; 451. Adjustable support rod; 4511. Rotating handle; 452. Adjusting rod; 4521. Mating ring; 5. Controller; 51. Throttle control handle; 52. Emergency stop switch. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0029] This application discloses a lawn mowing device installed on a tractor, referring to... Figure 1 The system includes a support frame 1, a mowing mechanism 2, and an angle adjustment assembly 4. A height adjustment assembly 3 is also mounted on the support frame 1. The support frame 1 supports the mowing mechanism 2, the angle adjustment assembly 4, and the height adjustment assembly 3. The mowing mechanism 2 is used for mowing grass. The angle adjustment assembly 4 is used to adjust the horizontal position of the support frame 1 relative to the towing vehicle. In this embodiment, the towing vehicle is an ATV. The height adjustment assembly 3 is used to adjust the height of the mowing mechanism 2 relative to the ground.

[0030] Reference Figures 1-3The mowing mechanism 2 includes a drive motor 21 and a reduction gear assembly 22. The reduction gear assembly 22 includes a reduction belt 221 and a rotating support shaft 222. A protective cover 12 is also installed on the support frame 1. The lower end of the protective cover 12 is fixedly connected to the support frame 1. The drive motor 21 is fixedly connected to the upper top wall of the protective cover 12. The output shaft of the drive motor 21 extends from the upper top wall of the protective cover 12 into the interior of the protective cover 12. A drive pulley 211 is fixedly connected to the output shaft of the drive motor 21, and the drive pulley 211 is located inside the protective cover 12. The rotating support shaft 222 is vertically fixedly connected to the support frame 1, and the rotating support shaft 222 is also located inside the protective cover 12. A driven pulley 2221 is fixedly connected to the upper end of the rotating support shaft 222, and the driven pulley 2221 is located inside the protective cover 12. The reduction belt 221 is fitted on the driving pulley 211 and the driven pulley 2221. The reduction belt 221 is located inside the protective cover 12. The diameter of the driving pulley 211 is smaller than the diameter of the driven pulley 2221.

[0031] Reference Figures 1-2 A mowing support plate 223 is fixedly connected to the lower end of the rotating support shaft 222, and the long axis of the mowing support plate 223 is perpendicular to the axis of the rotating support shaft 222. A mowing blade 2231 is fixedly connected to each end of the mowing support plate 223, and the length direction of the mowing blade 2231 is parallel to the length direction of the support plate. A splash guard 11 is vertically fixedly connected to the support frame 1 on the side closest to the drive motor 21.

[0032] Reference Figures 1-3A belt tension adjustment assembly 23 is installed on the protective cover 12. The belt tension adjustment assembly 23 includes a tension adjustment post 231, an adjustment nut 232, and a mounting bolt 233. In this embodiment, two sets of belt tension adjustment assemblies 23 are arranged along the width direction of the protective cover 12. This embodiment uses one set of belt tension adjustment assemblies 23 as an example. A waist-shaped groove 121 is formed on the upper top wall of the protective cover 12, and a mounting hole 122 is formed on the side wall of the protective cover 12. The tension adjustment post 231 is located inside the protective cover 12, and a tension adjustment screw 2311 is coaxially fixedly connected to the tension adjustment post 231. The end of the tension adjustment screw 2311 extends outward from the mounting hole 122 on the side wall of the protective cover 12. The drive motor 21 is positioned on the top wall of the protective cover 12 by the mounting bolts 233 passing sequentially through the oblong groove 121 and the tension adjustment column 231. Specifically, the mounting bolts 233 not only fix the drive motor 21 to the top wall of the protective cover 12, but also press and fix the tension adjustment column 231 to the inner top wall of the protective cover 12. The adjusting nut 232 is threaded to the end of the tension adjustment screw 2311 that extends out of the mounting hole 122. When it is necessary to adjust the tension of the reduction belt 221, rotating the adjusting nut 232 causes the tension adjustment screw 2311 to move outward along the mounting hole 122, which in turn drives the drive motor 21 to move within the oblong groove 121 via the tension adjustment column 231, thereby achieving the tensioning operation of the reduction belt 221.

[0033] Reference Figure 1 and 4 The height adjustment assembly 3 includes a height adjustment frame 31 and a height adjustment screw 32. One end of the height adjustment frame 31 is open and rotatably connected to the support frame 1 through this open end. The other end of the height adjustment frame 31 extends upward at an angle from the horizontal direction for a certain distance. The corresponding part of the support frame 1 has a similar inclined structure to the height adjustment frame 31, so that the inclination angle of this end of the support frame 1 is consistent with the inclination angle of the height adjustment frame 31. A rotating support column 14 is rotatably connected to the other end of the support frame 1, and the axis of the rotating support column 14 is parallel to the width direction of the support frame 1. The height adjustment screw 32 is vertically arranged, and the lower end of the height adjustment screw 32 is rotatably connected to the circumferential side wall of the rotating support column 14. An adjustment support column 312 is rotatably connected to the upper part of the other end of the height adjustment frame 31. The axis of the adjustment support column 312 is parallel to the axis of the rotating support column 14, and a threaded hole is provided on the adjustment support column 312, the axis of which is perpendicular to the axis of the adjustment support column 312. The height adjustment screw 32 is threaded into the internal thread of the threaded hole. A lever 321 is fixedly connected to the height adjustment screw 32. A support wheel 311 is rotatably connected to each side of the height adjustment bracket 31.

[0034] Reference Figure 1 , Figure 2 and Figure 4 When the operator rotates lever 321, the height adjusting screw 32 rotates around its own axis. Since the adjusting support column 312 is threadedly engaged with the height adjusting screw 32 through its internal threaded hole, the rotation of the screw drives the adjusting support column 312 to produce a linear displacement along the screw's axial direction. Simultaneously, the adjusting support column 312 is rotatably connected to the height adjusting frame 31 at both ends, and rotates around its own axis during movement. This combined motion of the adjusting support column 312 is further transmitted to the height adjusting frame 31 connected to it. One end of the height adjusting frame 31 is rotatably connected to the support frame 1 through a hinge point; therefore, the displacement of the adjusting support column 312 is converted into an oscillating motion of the height adjusting frame 31 around this hinge point. Specifically, when the adjusting support column 312 moves upward along the height adjusting screw 32, it pushes the height adjusting frame 31 to oscillate upward. At this time, the support wheel 311, fixedly mounted on the height adjusting frame 31, rises accordingly. Since the support wheel 311 always remains in contact with the ground, its rising action causes the entire support frame 1 to decrease in height relative to the ground. Conversely, when the adjusting support column 312 moves downward, the height adjusting frame 31 swings downward, causing the support wheel 311 to descend, thereby increasing the height of the support frame 1 relative to the ground. The mowing mechanism 2 is mounted on the support frame 1, so the height of the mowing blade 2231 from the ground changes synchronously with the raising and lowering of the support frame 1.

[0035] Reference Figure 1 and Figure 4 By incorporating a height adjustment component 3, the position of the mowing mechanism 2 can be adjusted according to the preset mowing height of the lawn. Specifically, the operator can change the height of the mowing blade 2231 relative to the ground using the height adjustment component 3. When the mowing blade 2231 is adjusted to a higher position relative to the ground, the stubble height of the mowed lawn is correspondingly higher; conversely, when the mowing blade 2231 is adjusted to a lower position relative to the ground, the stubble height of the mowed lawn is correspondingly lower. This structure allows for flexible and convenient adjustment of the lawn mowing height to meet different mowing requirements.

[0036] Reference Figure 1 and Figure 5The angle adjustment assembly 4 includes a traction rod 41, a first positioning element 42, a connecting rod 43, and a second positioning element 44. An angle adjustment frame 13 is rotatably connected to the upper end of the inclined portion of the support frame 1. The end of the angle adjustment frame 13 can swing around the width direction of the support frame 1. An arc-shaped plate 131 is vertically fixedly connected to the upper end of the angle adjustment frame 13. Five locking holes 1311 are evenly distributed on the arc-shaped plate 131, with consistent spacing between each locking hole 1311. The axis of each locking hole 1311 is perpendicular to the height direction of the arc-shaped plate 131. The traction rod 41 is rotatably connected to the angle adjustment frame 13, and the axis of rotation between the traction rod 41 and the angle adjustment frame 13 is parallel to the height direction of the angle adjustment frame 13.

[0037] Reference Figure 1 and Figure 5 A first positioning element 42 is mounted on the traction rod 41, and is used to position the deflection angle between the traction rod 41 and the angle adjustment frame 13. Specifically, the first positioning element 42 includes a bracket 421, a pull rod 422, and a spring 423. The bracket 421 is fixedly connected to the traction rod 41 and is close to the angle adjustment frame 13. The pull rod 422 is slidably connected to the bracket 421, and the long axis of the pull rod 422 is parallel to the long axis of the traction rod 41. A limit block 4221 is fixedly connected to the pull rod 422, and the limit block 4221 is located inside the bracket 421. A spring 423 is sleeved on the pull rod 422, with one end of the spring 423 abutting against the bracket 421 and the other end of the spring 423 abutting against the limit block 4221.

[0038] Reference Figure 1 and Figure 5 The angle adjustment assembly 4 also includes a bidirectional threaded rod 45, which consists of an adjusting support rod 451 and two adjusting rods 452. Specifically, each adjusting rod 452 has an external thread, and the threads on the two adjusting rods 452 have opposite directions of rotation. The two adjusting rods 452 are threaded to both ends of the adjusting support rod 451, and a rotating handle 4511 is fixedly connected to the adjusting support rod 451. A mating ring 4521 is fixedly connected to the end of each adjusting rod 452. A first support 15 is fixedly connected to the support frame 1. The first support 15 is located below the angle adjustment frame 13, and a first support ball 151 is rotatably connected to the first support 15. The first support ball 151 can rotate around the short axis of the support frame 1. A second support 411 is fixedly connected to the traction rod 41. The second support 411 is located below the pull rod 422. A second support ball 4111 is rotatably connected to the second support 411, and the second support ball 4111 can rotate around the width of the support frame 1. The mating ring 4521 at one end of the bidirectional threaded pull rod 45 is rotatably engaged with the first support ball 151, and the mating ring 4521 at the other end of the bidirectional threaded pull rod 45 is rotatably engaged with the second support ball 4111.

[0039] Reference Figure 1 and Figure 5 When it is necessary to adjust the relative angle between the traction rod 41 and the support frame 1, the operator first pulls the pull rod 422 outward along the axial direction, causing its end to disengage from the corresponding locking hole 1311 on the arc plate 131, thereby releasing the lock on the deflection angle between the traction rod 41 and the angle adjustment frame 13. Then, the operator can rotate the traction rod 41 to the desired angle position, creating a new deflection angle between the traction rod 41 and the angle adjustment frame 13. Next, the end of the pull rod 422 is aligned with the locking hole 1311 on the arc plate 131 corresponding to that angle, and the pull rod 422 is released. Under the elastic restoring force of the spring 423, the pull rod 422 automatically moves inward and inserts into the selected locking hole 1311, completing the angle positioning. The spring 423 continuously applies force to the pull rod 422, ensuring that the pull rod 422 remains in the locking hole 1311 without external intervention, thus ensuring the stability of the locked state between the traction rod 41 and the angle adjustment frame 13.

[0040] Reference Figure 1 and Figure 5 The end of the connecting rod 43 is fixedly connected to a sector frame 431. The end of the traction rod 41 away from the support frame 1 extends into the sector frame 431, and this end of the traction rod 41 is rotatably connected to the sector frame 431, allowing the traction rod 41 to swing relative to the sector frame 431. The axis of rotation between the traction rod 41 and the sector frame 431 is parallel to the height direction of the sector frame. A row of insertion holes 4311 is provided along the arc edge of the sector frame 431, and these insertion holes 4311 are evenly arranged in an arc shape. A corresponding positioning hole 412 is provided on the traction rod 41, and the axis of the positioning hole 412 is parallel to the axis of each insertion hole 4311 on the sector frame 431. The second positioning member 44 includes a positioning rod 441 and a pin 442. The positioning rod 441 is used to simultaneously pass through a selected insertion hole 4311 on the fan-shaped frame 431 and a positioning hole 412 on the traction rod 41, thereby fixing the relative position between the fan-shaped frame 431 and the traction rod 41 to achieve angular positioning. A pin 442 is inserted into the positioning rod 441 to securely lock the positioning rod 441 onto the fan-shaped frame 431 and the traction rod 41, preventing the positioning rod 441 from accidentally dislodging and ensuring the reliability and stability of the positioning. A hook 432 is fixedly connected to the end of the connecting rod 43 away from the traction rod 41. This hook 432 is used to attach to the tractor, thereby achieving convenient connection and towing of the entire lawn mower device to the tractor. A controller 5 is installed on the traction rod 41, and a throttle control handle 51 is rotatably connected to the controller 5. An emergency stop switch 52 is also fixedly connected to the controller 5.

[0041] Reference Figure 1 and Figure 5The bidirectional threaded tie rod 45 is used to adjust the lifting height of the end of the traction rod 41 away from the support frame 1. After adjusting the relative height between the support frame 1 and the ground via the height adjustment assembly 3, the height of the hook 432 at the end of the traction rod 41 and the connection point with the tractor changes accordingly. To compensate for this height change at the connection point, adjustment can be achieved by rotating the rotating handle 4511 of the bidirectional threaded tie rod 45. Specifically, rotating the handle 4511 causes the adjusting support rod 451 to rotate, causing the adjusting rods 452 with opposite rotation directions at both ends to move synchronously towards or away from each other, thereby changing the overall length of the bidirectional threaded tie rod 45. This length change further pushes or pulls the traction rod 41 to rotate around its connection point with the angle adjustment frame 13, achieving a fine adjustment of the tilt angle of the traction rod 41, thereby adapting the height of the hook 432 to the connection position of the tractor. Meanwhile, the mating rings 4521 at both ends of the bidirectional threaded tie rod 45 form a rotational fit with the first support ball 151 and the second support ball 4111 respectively. This structure not only allows the bidirectional threaded tie rod 45 to adapt to the swing of the traction rod 41 during the length change, but also allows it to automatically adapt to the change of its relative position through the spherical fit when the traction rod 41 and the angle adjustment frame 13 are adjusted, ensuring that the entire adjustment process is smooth and the structure is stable.

[0042] Reference Figure 1 and Figure 5 The angle adjustment component 4 is designed to adjust the deflection angle between the connecting rod 43 and the traction rod 41, causing the traction rod 41 to rotate the support frame 1 to one side of the tractor. Further adjustments to the deflection angle between the traction rod 41 and the support frame 1 bring the support frame 1 to a working position parallel to the tractor. This structural arrangement allows the lawn mowing device to be positioned entirely on one side of the tractor, effectively preventing the tractor from trampling the lawn during travel.

[0043] The implementation principle of the lawn mowing device installed on a tractor in this embodiment is as follows: When the lawn mowing device of this embodiment is working, the angle adjustment component 4 adjusts the support frame 1 and the mowing mechanism 2 installed on it to one side of the tractor, so that the mowing area avoids the travel path of the tractor. The operator first releases the lock between the traction rod 41 and the angle adjustment frame 13 by using the first positioning component 42, swings the traction rod 41 to the required angle, and then locks it again; then, the relative deflection angle between the connecting rod 43 and the traction rod 41 is adjusted by the second positioning component 44, so that the support frame 1 is finally positioned parallel to the tractor. The height adjustment component 3 drives the height adjustment screw 32 to rotate by rotating the lever 321, thereby causing the adjustment support column 312 to move along the screw axis, driving the height adjustment frame 31 to swing around the hinge point, thereby adjusting the height of the support wheel 311 and setting the height of the mowing blade 2231 off the ground. In the mowing mechanism 2, the drive motor 21 transmits power to the rotating support shaft 222 via the drive pulley 211, the reduction belt 221, and the driven pulley 2221, causing the mowing blades 2231 at both ends of the mowing support plate 223 to rotate and cut. Because the mowing mechanism 2 is located to the side of the tractor, the grass stems are not crushed by the tractor before cutting and remain in a naturally upright state, allowing the mowing blades 2231 to effectively cut the grass stems. The resulting lawn has a uniform stubble height and a smooth appearance.

[0044] This application avoids the trampling of the lawn by the tractor through structural layout, thereby solving the problems of incomplete cutting and lawn mottle caused by grass stems falling over, and improving the overall aesthetics and health of the lawn.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lawn mowing device installed on a tractor, characterized in that: It includes a support frame (1), a mowing mechanism (2) and an angle adjustment component (4). The mowing mechanism (2) includes a drive motor (21) and a reduction component (22). The drive motor (21) is mounted on the support frame (1), and the reduction component (22) is mounted on the output end of the drive motor (21). The output end of the reduction component (22) is provided with a mowing blade (2231). The angle adjustment assembly (4) includes a traction rod (41), a first positioning element (42), a connecting rod (43), and a second positioning element (44). One end of the traction rod (41) is rotatably mounted on the support frame (1). The first positioning element (42) is mounted on the traction rod (41) and is used to position the traction rod (41) on the support frame (1). The connecting rod (43) is rotatably mounted on the traction rod (41), and the second positioning member (44) is mounted on the connecting rod (43) and the traction rod (41). The second positioning member (44) is used to position the connecting rod (43) on the traction rod (41).

2. The lawn mowing device installed on a tractor according to claim 1, characterized in that: The first positioning component (42) includes a bracket (421), a pull rod (422) and a spring (423). An angle adjustment frame (13) is rotatably mounted on the support frame (1), and one end of the traction rod (41) is rotatably mounted on the angle adjustment frame (13). The angle adjustment frame (13) is provided with an arc plate (131), the arc plate (131) is vertically arranged on the support frame (1), the arc plate (131) is provided with a snap-fit ​​hole (1311), the bracket (421) is arranged on the traction rod (41), the pull rod (422) is fitted with a spring (423), one end of the spring (423) abuts against the pull rod (422), and the other end of the spring (423) abuts against the bracket (421); The end of the pull rod (422) extends into the snap-fit ​​hole (1311).

3. The lawn mowing device installed on a tractor according to claim 1, characterized in that: The second positioning component (44) includes a positioning rod (441) and a pin (442). The end of the connecting rod (43) is provided with a fan-shaped frame (431). The other end of the traction rod (41) extends into the fan-shaped frame (431) and is rotatably connected to the fan-shaped frame (431). The fan-shaped frame (431) is also provided with a plug hole (4311), and the traction rod (41) is provided with a positioning hole (412). The positioning rod (441) is inserted into the plug hole (4311) and the positioning hole (412). The positioning rod (441) is used to position the traction rod (41) on the connecting rod (43). The pin (442) is used to position the positioning rod (441) on the connecting rod (43) and the traction rod (41).

4. The lawn mowing device installed on a tractor according to claim 1, characterized in that: The deceleration assembly (22) includes a deceleration belt (221) and a rotating support shaft (222). The output shaft of the drive motor (21) is provided with a drive pulley (211). The rotating support shaft (222) is vertically arranged on the support frame (1). The driven pulley (2221) is provided on the rotating support shaft (222). A deceleration belt (221) is sleeved between the drive pulley (211) and the driven pulley (2221). The diameter of the drive pulley (211) is smaller than the diameter of the driven pulley (2221). A grass-cutting blade (2231) is provided on the rotating support shaft (222).

5. A lawn mowing device installed on a tractor according to claim 4, characterized in that: The support frame (1) is provided with a protective cover (12), and the driving pulley (211), the deceleration belt (221) and the driven pulley (2221) are all located inside the protective cover (12).

6. A lawn mowing device installed on a tractor according to claim 1, characterized in that: The support frame (1) is also provided with a height adjustment component (3). The height adjustment component (3) includes a height adjustment frame (31) and a height adjustment screw (32). One end of the height adjustment frame (31) is rotatably mounted on the support frame (1), and the height adjustment screw (32) is vertically rotatably mounted on the support frame (1). An adjustment support column (312) is provided on the height adjustment frame (31), and the adjustment support column (312) is located at the other end of the height adjustment frame (31). The height adjustment screw (32) is threadedly connected to the adjustment support column (312). The height adjustment screw (32) is used to adjust the lifting height of the height adjustment frame (31).

7. A lawn mowing device installed on a tractor according to claim 1, characterized in that: The angle adjustment assembly (4) also includes a bidirectional threaded rod (45), one end of which is rotatably mounted on the support frame (1), and the other end of which is rotatably mounted on the traction rod (41). The bidirectional threaded rod (45) is used to adjust the lifting height of the end of the traction rod (41) away from the support frame (1).

8. A lawn mowing device installed on a tractor according to claim 1, characterized in that: The support frame (1) is also provided with a splash guard (11).

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