An adaptively adjustable lawnmower and method

Abstract

This invention discloses an adaptively adjustable lawnmower and method, belonging to the field of lawnmowers. An adaptively adjustable lawnmower includes a top plate and four support legs with pulleys fixedly mounted on their bottoms, fixedly connected to the lower end of the top plate. A push handle is also fixedly mounted on the upper end of the top plate. A lifting plate is mounted on the lower end of the top plate via a lifting mechanism. Both sides of the lifting plate are rotatably connected to inclined plates via rotating rods. The lifting plate is equipped with an adjustment mechanism for driving the rotating rods. A first cutting motor is fixedly mounted on the lower end of the lifting plate. A first cutting disc parallel to the lower end surface of the lifting plate is fixedly mounted on the output shaft of the first cutting motor. This invention more efficiently removes weeds from raised beds and can also cut weeds on horizontal ground. The entire device is more flexible and convenient to use.

Description

Technical Field

[0001] This invention relates to the field of lawnmower technology, and more particularly to an adaptively adjustable lawnmower and method. Background Technology

[0002] A lawnmower, also known as a lawn mower, lawn trimmer, or lawn trimmer, is a mechanical tool used for trimming lawns, vegetation, etc. It consists of a blade disc, engine, wheels, walking mechanism, blades, handle, and control unit. Its main purpose is to cut and trim weeds on flat ground.

[0003] In the existing technology, when weeding on raised beds, it is difficult to cut the weeds on both sides of the raised beds because the cross-section of the raised beds is trapezoidal. Therefore, it is necessary to use small handheld lawnmowers for weeding. During the weeding process, the blades of the lawnmower need to be turned back and forth, which is cumbersome and seriously affects the weeding efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of low efficiency of existing lawnmowers in mowing high-ridge land, and to propose an adaptive lawnmower and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adaptively adjustable lawnmower includes a top plate and four legs with pulleys fixedly mounted on their bottoms, fixedly connected to the lower end of the top plate. A push handle is also fixedly mounted on the upper end of the top plate. A lifting plate is mounted on the lower end of the top plate via a lifting mechanism. An inclined plate is rotatably connected to both sides of the lifting plate via a rotating rod. An adjustment mechanism for driving the rotating rod is provided on the lifting plate. A first cutting motor is fixedly mounted on the lower end of the lifting plate. A first cutting disc parallel to the lower end face of the lifting plate is fixedly mounted on the output shaft of the first cutting motor. Second cutting motors are mounted on the opposite faces of the two inclined plates, and second cutting discs are fixedly mounted on the output shafts of the two second cutting motors.

[0007] To adapt the entire device to different mowing occasions, preferably, the adjustment mechanism includes a bracket fixedly connected to the upper end of the lifting plate, a drive motor fixedly mounted on the bracket, and worm gears fixedly mounted on both of the two rotating rods. A vertical shaft is rotatably connected to the lifting plate, and the vertical shaft is connected to the output shaft of the drive motor through two meshing first transmission gears. A horizontal shaft is rotatably connected to the lifting plate, and worms that mesh with the two worm gears are fixedly connected to both ends of the horizontal shaft. The vertical shaft and the horizontal shaft are connected through two meshing second transmission gears.

[0008] To ensure that the first cutting disc at the lower end of the lifting plate is at the same height as the ground, the lifting mechanism further includes a first threaded rod fixedly connected to the upper end of the vertical shaft. The outer wall of the first threaded rod is threadedly connected to the top plate. A guide rod parallel to the first threaded rod is fixedly connected to the lifting plate. The outer wall of the guide rod is slidably connected to the top plate. A limit plate is fixedly connected to the top of the guide rod.

[0009] To further prevent a large gap between the first and second cutting discs, the inclined plate is provided with a sliding groove, and a second threaded rod is rotatably connected in the sliding groove. The outer wall of the second threaded rod is threaded with a sliding plate that is slidably connected to the sliding groove. The second cutting motor is fixedly mounted on the sliding plate. The lifting plate is provided with a linkage assembly that drives the second threaded rod to rotate. The lower end of the sliding groove is provided with a baffle that is fixedly connected to the second cutting motor.

[0010] In order to automatically drive the second threaded rod to rotate, the linkage assembly further includes a driven gear fixedly connected to the upper end of the second threaded rod, and an arc-shaped rack fixedly connected to the lifting plate via a connecting rod, the arc-shaped rack meshing with the driven gear.

[0011] To further clean impurities from the first and second cutting discs, the lower ends of the lifting plate and the two inclined plates are each provided with two cleaning rods facing the push handle. The opposite surfaces of the two cleaning rods are each provided with brushes. The first and second cutting discs are located between the two sets of brushes. The two cleaning rods are fixedly connected by a connecting block. The cleaning rod at the lower end of the lifting plate is fixedly connected to its bottom, while the cleaning rod at the lower end of the inclined plate is fixedly connected to the baffle by an inclined rod.

[0012] To prevent the brushes from constantly pressing against the outer walls of the first and second cutting discs, furthermore, elastic strip-shaped airbags are fixedly installed on the opposite surfaces of the two cleaning rods. The two sets of brushes are respectively fixedly installed on the outer walls of the two sets of strip-shaped airbags. Neither set of brushes contacts the outer walls on either side of the first and second cutting discs. The opposite surfaces of the two strip-shaped airbags are provided with exhaust holes. An automatic air supply assembly connected to the strip-shaped airbags is provided between the limiting plate and the top plate.

[0013] In order to purge the outer walls of the first and second cutting discs, the automatic air supply assembly further includes a telescopic airbag fixedly installed between the top plate and the limiting plate, wherein an air intake pipe and an exhaust pipe are fixedly connected to the telescopic airbag and communicate with it, and the exhaust pipe is connected to the strip airbag through a connecting pipe.

[0014] To further prevent the strip-shaped airbag, the first threaded rod, and the guide rod from being contaminated and affecting their use, a cover is fixedly connected to the upper end of the top plate, and the strip-shaped airbag, the first threaded rod, and the guide rod are all located inside the cover.

[0015] A method for adjusting a lawnmower, with the following operating steps:

[0016] Step 1: When it is necessary to clear weeds on a level surface, start the drive motor;

[0017] Step 2: When the second cutting disc is flush with the first cutting disc, turn off the drive motor;

[0018] Step 3: Conversely, when it is necessary to cut weeds on the raised beds, reverse the output shaft of the drive motor;

[0019] Step 4: When the second cutting disc is parallel to the two sloping sides of the raised soil, turn off the drive motor;

[0020] Step 5: During the adjustment process, the rotating first threaded rod will cause the lifting plate and the inclined plate to automatically maintain the same distance from the ground.

[0021] Compared with the prior art, the present invention provides an adaptively adjustable lawnmower with the following beneficial effects:

[0022] 1. This adaptive lawnmower, by activating the first cutting motor and the second cutting motor, allows the first cutting disc to cut weeds on the top of the raised land, while the two second cutting discs can simultaneously cut weeds on the slopes on both sides of the raised land, thus completing the weed removal work on the raised land more efficiently.

[0023] 2. This adaptive lawnmower, by starting the drive motor, can drive the two inclined plates to rotate and lift upwards. When the second cutting disc is level with the first cutting disc, the drive motor can be turned off, so that the first and second cutting discs can cut weeds on the horizontal ground, thus making the whole device more flexible to use.

[0024] 3. This adaptive adjustable lawnmower, through the rotation of the vertical shaft, will drive the first threaded rod to rotate synchronously. Therefore, when the ramp is adjusted to be flush with the lifting plate, the lifting plate and the ramp will automatically maintain the same distance from the ground. This ensures that the first cutting disc can cut the weeds to the same height.

[0025] 4. This adaptive adjustable lawnmower, when the ramp rotates upward, the arc-shaped rack drives the second threaded rod to rotate through the driven gear, and the slide plate drives the second cutting disc on the second cutting motor to move closer to the edge of the first cutting disc. Thus, when the ramp is adjusted, the second cutting disc can always be close to the first cutting disc, preventing gaps between the first and second cutting discs and ensuring mowing efficiency.

[0026] 5. This adaptive adjustable lawnmower uses a downward sliding limit plate to press against the telescopic airbag. The telescopic airbag then blows air into the strip airbag through the exhaust pipe and connecting pipe. The strip airbag then exhausts air through the exhaust holes, which blow away impurities from the outer walls of the first and second cutting discs, completing the automatic cleaning of the first and second cutting discs, making it more convenient and labor-saving to use. Attached Figure Description

[0027] Figure 1 This is a first-view isometric structural diagram of an adaptively adjustable lawnmower proposed in this invention.

[0028] Figure 2 This is a schematic diagram of the second-view isometric structure of an adaptively adjustable lawnmower proposed in this invention.

[0029] Figure 3 This is a schematic diagram of the cutting structure of an adaptively adjustable lawnmower proposed in this invention.

[0030] Figure 4 This is a schematic diagram of the overall deformation state structure of an adaptively adjustable lawnmower proposed in this invention.

[0031] Figure 5 This invention proposes an adaptively adjustable lawnmower. Figure 3 Schematic diagram of a local structure in the middle;

[0032] Figure 6 This is a schematic diagram of the cross-sectional structure of the sweeping bar of an adaptively adjustable lawnmower proposed in this invention;

[0033] Figure 7 This is a first-view isometric structural diagram of the inclined plate of an adaptively adjustable lawnmower proposed in this invention.

[0034] Figure 8 This is a schematic diagram of the second-view isometric structure of the inclined plate of an adaptively adjustable lawnmower proposed in this invention.

[0035] In the diagram: 1. Top plate; 2. Support leg; 3. Pulley; 4. Lifting plate; 5. Inclined plate; 6. First cutting motor; 7. First cutting disc; 8. Second cutting motor; 9. Second cutting disc; 10. Rotating rod; 11. Worm gear; 12. Bracket; 13. Drive motor; 14. First transmission gear; 15. Second transmission gear; 16. Vertical shaft; 17. Horizontal shaft; 18. Worm gear; 19. First threaded rod; 20. Guide. 21. Rod; 22. Limiting plate; 23. Slide groove; 24. Second threaded rod; 25. Slide plate; 26. Driven gear; 27. Arc rack; 28. Connecting rod; 29. ​​Sweeping rod; 30. Brush; 31. Connecting block; 32. Strip-shaped airbag; 33. Connecting pipe; 34. Exhaust vent; 35. Telescopic airbag; 36. Exhaust pipe; 37. Intake pipe; 38. Baffle; 39. Diagonal rod; 40. Cover; 41. Push handle. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Example

[0038] Reference Figures 1-8 An adaptive adjustable lawnmower includes a top plate 1, and four support legs 2 with pulleys 3 fixedly installed at the bottom and fixedly connected to the lower end of the top plate 1. A push handle 40 is also fixedly installed at the upper end of the top plate 1. A lifting plate 4 is installed at the lower end of the top plate 1 via a lifting mechanism. The left and right sides of the lifting plate 4 are rotatably connected to inclined plates 5 via rotating rods 10. The lifting plate 4 is provided with an adjustment mechanism for driving the rotating rods 10 to rotate. A first cutting motor 6 is fixedly installed at the lower end of the lifting plate 4. A first cutting disc 7 parallel to the lower end surface of the lifting plate 4 is fixedly installed on the output shaft of the first cutting motor 6. Second cutting motors 8 are installed on the opposite surfaces of the two inclined plates 5. Second cutting discs 9 are fixedly installed on the output shafts of the two second cutting motors 8.

[0039] In use, the top plate 1 is pushed by the push handle 40, and the top plate 1 can be moved horizontally by the pulley 3 at the lower end of the support leg 2, so that it is moved to one end of the raised land. Then the top plate 1 is moved along the strip of raised land. During the movement, the first cutting motor 6 and the second cutting motor 8 are started. The first cutting disc 7 can cut the weeds on the top of the raised land, while the two second cutting discs 9 can cut the weeds on the slopes on both sides of the raised land at the same time, so as to complete the weed removal work on the raised land more efficiently. When it is necessary to remove weeds on the horizontal ground, the two inclined plates 5 can be aligned with the first cutting disc 7 by adjusting the mechanism, so that the whole device can be used more flexibly. During the adjustment, the lifting mechanism will drive the lifting plate 4 and the inclined plate 5 to slide downward. So when the inclined plate 5 is adjusted to be aligned with the lifting plate 4, the lifting plate 4 and the inclined plate 5 will automatically maintain the same distance from the ground. That is, before and after the adjustment, the distance between the first cutting disc 7 and the ground is the same. This ensures that the first cutting disc 7 can cut the same height when cutting weeds. Example

[0040] Reference Figures 3-5 as well as Figures 7-8 Similar to Example 1, but further, a specific implementation scheme for the regulating mechanism is disclosed.

[0041] The adjustment mechanism includes a bracket 12 fixedly connected to the upper end of the lifting plate 4, a drive motor 13 fixedly mounted on the bracket 12, and worm gears 11 fixedly mounted on both rotating rods 10. A vertical shaft 16 is rotatably connected to the lifting plate 4, and the vertical shaft 16 is connected to the output shaft of the drive motor 13 through two meshing first transmission gears 14. A horizontal shaft 17 is rotatably connected to the lifting plate 4, and worms 18 that mesh with the two worm gears 11 are fixedly connected to both ends of the horizontal shaft 17. The vertical shaft 16 and the horizontal shaft 17 are connected through two meshing second transmission gears 15.

[0042] In use, the top plate 1 is pushed by the push handle 40, and the top plate 1 can move horizontally via the pulleys 3 at the lower end of the support legs 2, moving it to one end of the raised ridge. Then, the top plate 1 is moved along the strip of raised ridge. During the movement, the first cutting motor 6 and the second cutting motor 8 are activated. The first cutting disc 7 can cut the weeds on the top of the raised ridge, while the two second cutting discs 9 can simultaneously cut the weeds on the slopes on both sides of the raised ridge, thus completing the weed removal work on the raised ridge more efficiently. When it is necessary to remove weeds on the horizontal ground, the drive motor 13 is activated. The drive motor 13 drives the vertical shaft 16 to rotate via two meshing first transmission gears 14. The vertical shaft 16 then drives the horizontal shaft 17 to rotate via two meshing second transmission gears 15. The horizontal shaft 17 then drives the two worm gears 11 to rotate via the worms 18 at both ends. The worm gear 11 drives the two inclined plates 5 to rotate and lift upwards via the two rotating rods 10. When the second cutting disc 9 is level with the first cutting disc 7, the drive motor 13 is turned off, allowing the first cutting disc 7 and the second cutting disc 9 to cut weeds on the horizontal ground. Similarly, when the slope angle on both sides of the raised land is large or small, the drive motor 13 can be rotated forward or backward to easily adjust the cutting angle of the inclined plate 5 and the second cutting disc 9, making the entire device more flexible to use. During the adjustment process, the lifting mechanism will drive the lifting plate 4 and the inclined plate 5 to slide downwards. When the inclined plate 5 is adjusted to be level with the lifting plate 4, the lifting plate 4 and the inclined plate 5 will automatically maintain the same distance from the ground. That is, before and after the adjustment, the distance between the first cutting disc 7 and the ground is the same, thus ensuring that the first cutting disc 7 can cut the same height when cutting weeds. Example

[0043] Reference Figure 3 and Figure 4 Similar to Example 2, but further, a specific implementation scheme for the lifting mechanism is disclosed.

[0044] The lifting mechanism includes a first threaded rod 19 fixedly connected to the upper end of the vertical shaft 16, the outer wall of the first threaded rod 19 being threadedly connected to the top plate 1, wherein a guide rod 20 parallel to the first threaded rod 19 is fixedly connected to the lifting plate 4, the outer wall of the guide rod 20 is slidably connected to the top plate 1, and a limit plate 21 is fixedly connected to the top of the guide rod 20.

[0045] When the vertical shaft 16 rotates, it will drive the first threaded rod 19 to rotate synchronously. Since the first threaded rod 19 is threadedly connected to the top plate 1, the rotation of the first threaded rod 19 will drive the lifting plate 4 and the inclined plate 5 to slide downward. When the inclined plate 5 is adjusted to be flush with the lifting plate 4, the lifting plate 4 and the inclined plate 5 will automatically maintain the same distance from the ground. That is, before and after adjustment, the distance between the first cutting disc 7 and the ground is the same. This ensures that the first cutting disc 7 can cut the same height when cutting weeds. When the lifting plate 4 slides downward, the guide rod 20 will slide on the top plate 1, which mainly plays a guiding role. Example

[0046] Reference Figures 3-5 as well as Figures 7-8 The implementation is basically the same as in Example 3, but with a further addition of a specific implementation scheme for adjusting the gap between the second cutting disc 9 and the first cutting disc 7.

[0047] The inclined plate 5 is provided with a slide groove 22, and a second threaded rod 23 is rotatably connected in the slide groove 22. The outer wall of the second threaded rod 23 is threadedly connected to a slide plate 24 that is slidably connected to the slide groove 22. The second cutting motor 8 is fixedly installed on the slide plate 24. The lifting plate 4 is provided with a linkage assembly that drives the second threaded rod 23 to rotate. The lower end of the slide groove 22 is provided with a baffle 37 that is fixedly connected to the second cutting motor 8 to prevent impurities from entering the slide groove 22. The linkage assembly includes a driven gear 25 fixedly connected to the upper end of the second threaded rod 23. An arc-shaped rack 26 is fixedly connected to the lifting plate 4 through a connecting rod 27. The arc-shaped rack 26 meshes with the driven gear 25.

[0048] When the inclined plate 5 rotates upward, the arc-shaped rack 26, which meshes with the driven gear 25, will drive the driven gear 25 to rotate. The driven gear 25 will drive the second threaded rod 23 to rotate. The second threaded rod 23 will drive the slide plate 24 to slide in the groove 22 towards the lifting plate 4. The slide plate 24 will drive the second cutting motor 8 to slide synchronously. The second cutting motor 8 can then drive the second cutting disc 9 to move closer to the edge of the first cutting disc 7. This ensures that when adjusting the inclined plate 5, the second cutting disc 9 can always be close to the first cutting disc 7, preventing gaps between the first cutting disc 7 and the second cutting disc 9 and ensuring mowing efficiency. Example

[0049] Reference Figures 1-2 as well as Figures 6-8 The embodiment is basically the same as that in Example 4, but with a further addition of a specific implementation plan for cleaning the first cutting disc 7 and the second cutting disc 9.

[0050] The lower ends of the lifting plate 4 and the two inclined plates 5 are provided with two cleaning rods 28 facing the push handle 40. The opposite surfaces of the two cleaning rods 28 are provided with brushes 29. The first cutting disc 7 and the second cutting disc 9 are located between the two sets of brushes 29. The two cleaning rods 28 are fixedly connected by a connecting block 30. The cleaning rod 28 at the lower end of the lifting plate 4 is fixedly connected to its bottom, while the cleaning rod 28 at the lower end of the inclined plate 5 is fixedly connected to the baffle 37 by an inclined rod 38. When the second cutting motor 8 moves, it will drive the cleaning rod 28 to move synchronously through the baffle 37 and the inclined rod 38.

[0051] During the use of the first cutting disc 7 and the second cutting disc 9, the brush 29 on the cleaning bar 28 can clean the impurities and weeds on the outer walls of the first cutting disc 7 and the second cutting disc 9, preventing the impurities adhering to the outer walls of the first cutting disc 7 and the second cutting disc 9 from affecting their mowing efficiency. Example

[0052] Reference Figures 3-4 as well as Figures 6-8 Similar to Example 5, but with a further addition, a specific implementation plan for cleaning the first cutting disc 7 and the second cutting disc 9 by venting air is added.

[0053] Two cleaning rods 28 are fixedly mounted with elastic strip-shaped airbags 31 on their opposite sides. Two sets of brushes 29 are fixedly mounted on the outer walls of the two sets of strip-shaped airbags 31 respectively. Neither set of brushes 29 contacts the outer walls of the first cutting disc 7 and the second cutting disc 9 on either side. The opposite sides of the two strip-shaped airbags 31 are provided with multiple exhaust holes 33. An automatic air supply assembly connected to the strip-shaped airbags 31 is provided between the limiting plate 21 and the top plate 1. The automatic air supply assembly includes a telescopic airbag 34 fixedly mounted between the top plate 1 and the limiting plate 21. The telescopic airbag 34 is fixedly connected to an air intake pipe 36 and an exhaust pipe 35. The exhaust pipe 35 is connected to the strip-shaped airbag 31 through a connecting pipe 32. The total exhaust volume of the multiple exhaust holes 33 is half of that of the connecting pipe 32.

[0054] During the use of the first cutting disc 7 and the second cutting disc 9, the two sets of brushes 29 do not contact the outer walls of the first cutting disc 7 and the second cutting disc 9. When a lot of impurities remain on the first cutting disc 7 and the second cutting disc 9, affecting the mowing efficiency, the entire device is moved to a flat surface. Then, the inclined plate 5 is adjusted to be flush with the lifting plate 4 and started. The first cutting motor 6 and the second cutting motor 8 are activated. During this period, the first threaded rod 19 will drive the limiting plate 21 to slide downward. The limiting plate 21 will then press against the telescopic airbag 34. The telescopic airbag 34 will blow air into the strip airbag 31 through the exhaust pipe 35 and the connecting pipe 32. The strip airbag 31 will exhaust air through the exhaust hole 33. The exhaust hole 33 will blow off the impurities on the outer walls of the first cutting disc 7 and the second cutting disc 9. Because the aperture is small, the air supplied by the telescopic airbag 34 cannot be discharged from the strip airbag 31 in time. The telescopic airbag 34 will then expand, causing the brush 29 to press against the two side surfaces of the first cutting disc 7 and the second cutting disc 9. The brush 29 can then clean the impurities on the surface of the first cutting disc 7 and the second cutting disc 9. With the air blowing from the exhaust fine hole 33, the impurities on the surface of the first cutting disc 7 and the second cutting disc 9 can be cleaned even better. When the air in the strip airbag 31 is completely discharged, the strip airbag 31 will shrink under the elastic force, and the brush 29 will detach from the outer wall of the first cutting disc 7 and the second cutting disc 9 again. This can prevent the brush 29 from pressing against the first cutting disc 7 and the second cutting disc 9 continuously, thus ensuring the service life of the brush 29, the first cutting disc 7, and the second cutting disc 9.

[0055] Furthermore, a cover 39 is fixedly connected to the upper end of the top plate 1. The strip-shaped airbag 31, the first threaded rod 19, and the guide rod 20 are all located inside the cover 39. The cover 39 can prevent the strip-shaped airbag 31, the first threaded rod 19, and the guide rod 20 from being contaminated and affecting their use.

[0056] A method for adjusting a lawnmower, with the following operating steps:

[0057] Step 1: When it is necessary to clear weeds on a level surface, start the drive motor 13;

[0058] Step 2: When the second cutting disc 9 is flush with the first cutting disc 7, turn off the drive motor 13.

[0059] Step 3: Conversely, when it is necessary to cut weeds on the raised land, reverse the output shaft of the drive motor 13;

[0060] Step 4: When the second cutting disc 9 is parallel to the two sloping sides of the raised soil, turn off the drive motor 13.

[0061] Step 5: During the adjustment process, the rotating first threaded rod 19 will drive the lifting plate 4 and the inclined plate 5 to automatically maintain the same distance from the ground.

[0062] Working principle: In this invention, when in use, the top plate 1 is pushed by the push handle 40, and the top plate 1 can be moved horizontally by the pulley 3 at the lower end of the support leg 2, and moved to one end of the raised land. Then the top plate 1 is moved along the strip of raised land. During the movement, the first cutting motor 6 and the second cutting motor 8 are started. The first cutting disc 7 can cut the weeds on the top of the raised land, while the two second cutting discs 9 can cut the weeds on the slopes on both sides of the raised land at the same time, so as to complete the weed removal work on the raised land more efficiently.

[0063] When weeds need to be removed from level ground, the drive motor 13 is started. The drive motor 13 drives the vertical shaft 16 to rotate through two meshing first transmission gears 14. The vertical shaft 16 then drives the horizontal shaft 17 to rotate through two meshing second transmission gears 15. The horizontal shaft 17 drives the two worm gears 11 to rotate through the worms 18 at both ends. The two worm gears 11 then drive the two inclined plates 5 to rotate upwards through the two rotating rods 10. When the second cutting disc 9 is level with the first cutting disc 7, the drive motor 13 is turned off, allowing the first cutting disc 7 and the second cutting disc 9 to cut the weeds on the level ground. Similarly, when the slope angle on both sides of the raised land is large or small, the drive motor 13 can be turned clockwise or counterclockwise to easily adjust the cutting angle of the inclined plate 5 and the second cutting disc 9, making the entire device more flexible to use.

[0064] When the vertical shaft 16 rotates, it will drive the first threaded rod 19 to rotate synchronously. Since the first threaded rod 19 is threadedly connected to the top plate 1, the rotating first threaded rod 19 will drive the lifting plate 4 and the inclined plate 5 to slide downward. When the inclined plate 5 is adjusted to be flush with the lifting plate 4, the lifting plate 4 and the inclined plate 5 will automatically maintain the same distance from the ground. That is, before and after adjustment, the distance between the first cutting disc 7 and the ground is the same. This ensures that the first cutting disc 7 can cut the same height when cutting weeds.

[0065] When the ramp 5 rotates upward, the arc-shaped rack 26, which meshes with the driven gear 25, will drive the driven gear 25 to rotate. The driven gear 25 will drive the second threaded rod 23 to rotate. The second threaded rod 23 will drive the slide plate 24 to slide towards the lifting plate 4. The slide plate 24 will drive the second cutting motor 8 to slide synchronously. The second cutting motor 8 can then drive the second cutting disc 9 to move closer to the edge of the first cutting disc 7. This ensures that when adjusting the ramp 5, the second cutting disc 9 can always be close to the first cutting disc 7, preventing gaps between the first cutting disc 7 and the second cutting disc 9 and ensuring mowing efficiency.

[0066] When a large amount of impurities remain on the first cutting disc 7 and the second cutting disc 9, affecting the mowing efficiency, the entire device is moved to a flat surface. The inclined plate 5 is then adjusted to be flush with the lifting plate 4, and the first cutting motor 6 and the second cutting motor 8 are started. During this process, the first threaded rod 19 drives the limiting plate 21 to slide downwards. The limiting plate 21 then presses against the telescopic airbag 34. The telescopic airbag 34 blows air into the strip-shaped airbag 31 through the exhaust pipe 35 and the connecting pipe 32. The strip-shaped airbag 31 then exhausts air through the exhaust hole 33, which blows off the impurities on the outer walls of the first cutting disc 7 and the second cutting disc 9. Because the diameter of the exhaust hole 33 is small, the air supplied by the telescopic airbag 34 cannot be expelled from the strip-shaped airbag 31 in time. When the airbag 31 is discharged, the telescopic airbag 34 expands, causing the brush 29 to press against the two side surfaces of the first cutting disc 7 and the second cutting disc 9. The brush 29 can then clean the impurities on the surface of the first cutting disc 7 and the second cutting disc 9. With the air blowing through the exhaust hole 33, the impurities on the surface of the first cutting disc 7 and the second cutting disc 9 can be cleaned even better. When the air in the strip-shaped airbag 31 is completely discharged, the strip-shaped airbag 31 will shrink under the elastic force, and the brush 29 will detach from the outer wall of the first cutting disc 7 and the second cutting disc 9 again. This prevents the brush 29 from pressing against the first cutting disc 7 and the second cutting disc 9 continuously, thus ensuring the service life of the brush 29, the first cutting disc 7, and the second cutting disc 9.

[0067] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An adaptively adjustable lawnmower, comprising a top plate (1), characterized in that, Also includes: Four support legs (2) with pulleys (3) fixedly installed at the bottom are fixedly connected to the lower end of the top plate (1). Among them, a push handle (40) is also fixedly installed at the upper end of the top plate (1). The lifting plate (4) is installed at the lower end of the top plate (1) via a lifting mechanism. The lifting plate (4) has inclined plates (5) rotatably connected to both sides of the left and right sides via rotating rods (10), and the lifting plate (4) is provided with an adjustment mechanism to drive the rotating rods (10) to rotate. The first cutting motor (6) is fixedly installed at the lower end of the lifting plate (4). The first cutting motor (6) has a first cutting disc (7) fixedly mounted on its output shaft, which is parallel to the lower end face of the lifting plate (4). The two inclined plates (5) each have a second cutting motor (8) mounted on their opposite sides, and a second cutting disc (9) is fixedly mounted on the output shaft of each of the two second cutting motors (8). The adjustment mechanism includes: A bracket (12) is fixedly connected to the upper end of the lifting plate (4). A drive motor (13) is fixedly installed on the bracket (12). Worm gears (11) are fixedly installed on both rotating rods (10). The lifting plate (4) is rotatably connected to a vertical shaft (16), which is connected to the output shaft of the drive motor (13) via two meshing first transmission gears (14). A horizontal shaft (17) is rotatably connected to the lifting plate (4), and both ends of the horizontal shaft (17) are fixedly connected to worms (18) that mesh with two worm gears (11). The vertical shaft (16) and the horizontal shaft (17) are connected via two meshing second transmission gears (15). The lifting mechanism includes: A first threaded rod (19) is fixedly connected to the upper end of the vertical shaft (16), and the outer wall of the first threaded rod (19) is threadedly connected to the top plate (1). Among them, the lifting plate (4) is fixedly connected to a guide rod (20) parallel to the first threaded rod (19), the outer wall of the guide rod (20) is slidably connected to the top plate (1), and the top of the guide rod (20) is fixedly connected to a limit plate (21).

2. The adaptively adjustable lawnmower according to claim 1, characterized in that, The inclined plate (5) is provided with a groove (22), and a second threaded rod (23) is rotatably connected in the groove (22). The second threaded rod (23) has a sliding plate (24) that is slidably connected to the slide groove (22) on its outer wall. The second cutting motor (8) is fixedly installed on the sliding plate (24). The lifting plate (4) is provided with a linkage component that drives the second threaded rod (23) to rotate. The lower end of the slide groove (22) is provided with a baffle (37) that is fixedly connected to the second cutting motor (8).

3. The adaptively adjustable lawnmower according to claim 2, characterized in that, The linkage component includes: A driven gear (25) is fixedly connected to the upper end of the second threaded rod (23). An arc-shaped rack (26) is fixedly connected to the lifting plate (4) via a connecting rod (27). The arc-shaped rack (26) meshes with the driven gear (25).

4. The adaptively adjustable lawnmower according to claim 3, characterized in that, The lower ends of the lifting plate (4) and the two inclined plates (5) are provided with two cleaning rods (28) facing the push handle (40). The opposite surfaces of the two cleaning rods (28) are provided with brushes (29). The first cutting disc (7) and the second cutting disc (9) are both located between the two sets of brushes (29). The two cleaning rods (28) are fixedly connected by a connecting block (30), the cleaning rod (28) at the lower end of the lifting plate (4) is fixedly connected to its bottom, and the cleaning rod (28) at the lower end of the inclined plate (5) is fixedly connected to the baffle (37) by an inclined rod (38).

5. The adaptively adjustable lawnmower according to claim 4, characterized in that, Both cleaning rods (28) have elastic strip-shaped airbags (31) fixedly installed on their opposite sides. The two sets of brushes (29) are respectively fixedly installed on the outer walls of the two sets of strip-shaped airbags (31). Neither set of brushes (29) contacts the outer walls on both sides of the first cutting disc (7) and the second cutting disc (9). Among them, the two strip-shaped airbags (31) are provided with exhaust holes (33) on their opposite sides, and an automatic air supply component connected to the strip-shaped airbags (31) is provided between the limiting plate (21) and the top plate (1).

6. The adaptively adjustable lawnmower according to claim 5, characterized in that, The automatic gas supply assembly includes: A telescopic airbag (34) is fixedly installed between the top plate (1) and the limiting plate (21). The telescopic airbag (34) is fixedly connected to an air intake pipe (36) and an exhaust pipe (35), and the exhaust pipe (35) is connected to the strip-shaped airbag (31) through a connecting pipe (32).

7. The adaptively adjustable lawnmower according to claim 6, characterized in that, The top plate (1) is fixedly connected to a cover (39), and the strip-shaped airbag (31), the first threaded rod (19) and the guide rod (20) are all located inside the cover (39).

8. A method for adjusting a lawnmower, using an adaptively adjustable lawnmower as described in any one of claims 1-7, characterized in that, The operation steps are as follows: Step 1: When it is necessary to clear weeds on a level surface, start the drive motor (13). Step 2: When the second cutting disc (9) is flush with the first cutting disc (7), turn off the drive motor (13); Step 3: Conversely, when it is necessary to cut weeds on the raised soil, reverse the output shaft of the drive motor (13); Step 4: When the second cutting disc (9) is parallel to the two sides of the ridged land, turn off the drive motor (13); Step 5: During the adjustment process, the rotating first threaded rod (19) will drive the lifting plate (4) and the inclined plate (5) to automatically maintain the same distance from the ground.

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