A fully automatic mower

Abstract

The application discloses a kind of full-automatic mower, and the application relates to the technical field of mower.The full-automatic mower, including vehicle body, vehicle body end face symmetry fixedly connected with support, two supports are commonly provided with segmented cutting grass part for segmenting cutting and crushing according to grass height, cutting grass unit includes the mounting frame of being fixedly connected between two adjacent slide columns and being C-shaped, grass crushing assembly is arranged in mounting frame, and feeding assembly for gathering grass together and introducing into grass crushing assembly while cutting grass is installed in the lower part of mounting frame, the present application adjusts the interval flexibly according to the height of grass by cutting grass unit, and the upper and lower staggered arrangement is adopted in ladder shape, so that the upper half and the lower half of tall grass are harvested in turn, to avoid being trampled and missed cutting, improve the integrity of single operation, then the cut grass clippings are refined and crushed again and evenly discharged by uniform discharge, to ensure that the grass clippings are shorter and evenly distributed, to greatly improve the effect of fine crushing and returning to field.

Description

Technical Field

[0001] This invention relates to the field of lawnmower technology, specifically to a fully automatic lawnmower. Background Technology

[0002] A fully automatic lawnmower is an intelligent device that can automatically complete lawn mowing operations. It is usually remotely controlled and has functions such as automatic walking, mowing, and path planning. Its core function is to achieve efficient lawn mowing without continuous manual operation. Fully automatic lawnmowers are widely used in various scenarios such as orchards, farms, wasteland reclamation, forest grasslands, park green belts, and urban landscape lawns. Most existing lawnmowers adopt a horizontal rotating blade disc or a transverse rotating shaft structure. Several blades are evenly arranged along the axial and circumferential directions on the rotating shaft. The rotating shaft is driven by a motor to drive the blades or directly drive the blade disc to rotate at high speed, contacting the grass stems and breaking them up, thereby realizing the lawn mowing operation.

[0003] In areas such as forests and wastelands, due to the complexity of grass species and the variability of growing conditions, weeds vary greatly in height. For weeds of moderate height, existing lawnmowers can usually achieve good mowing results. However, when dealing with extremely tall grass (whose height far exceeds that of the blade), although the current blade structure has a certain height adjustment range, this adjustment range is still limited. Usually, only the lower half of the grass can be cut and broken, while the upper part of the grass cannot be cut because it is higher than the blade. As a result, it is difficult to cut the entire grass stem in one operation, and multiple passes are often required to achieve complete removal. At the same time, during the operation, when the lawnmower pushes the lower part of the tall grass, it can easily flatten the tall grass. If the flattened grass stem is not elastic enough or has been broken and cannot bounce back, it cannot be touched again because the blade is suspended above it, resulting in some grass not being cut and thus missing some grass.

[0004] On the other hand, existing fully automatic lawn mowers generally adopt the method of fine shredding and returning to the field, that is, they do not collect the cut grass clippings, but instead break them up and throw them directly back to the ground to decompose naturally into fertilizer. However, when cutting tall grass, due to insufficient cutting in one go and the hard grass stalks, the cut grass segments are long and difficult to spread evenly on the grass surface, which is not conducive to its rapid decomposition, thus affecting the overall effect of fine shredding and returning to the field. Summary of the Invention

[0005] This invention provides a fully automatic lawn mower that solves the technical problems of existing fully automatic lawn mowers when dealing with very tall grass. Due to the limited range of the blade's lifting angle, they can often only cut the lower half of the grass, while the upper part of the grass is difficult to cut through in one go and is easily crushed and cannot bounce back, resulting in missed cuts that require repeated operations. At the same time, the cut tall grass is long and unevenly distributed, resulting in poor fine crushing and returning to the field.

[0006] This invention provides a fully automatic lawnmower, comprising a vehicle body with supports symmetrically fixedly connected to its front and rear ends. Two supports share a segmented cutting section for cutting and shredding the grass according to its height. A uniform discharge section is installed in the middle of the vehicle body for further refining and shredding the grass processed by the segmented cutting section and then evenly discharging it. A conveying mechanism is installed on the vehicle body to connect the segmented cutting section and the uniform discharge section. The segmented cutting section includes two support plates respectively fixedly connected to the upper surfaces of the supports, symmetrically formed grooves on the support plates, and a sliding connection to the grooves. The sliding column in the trough has a mowing unit installed between two adjacent sliding columns. The two mowing units are arranged in a staggered, stepped manner to harvest tall grass in sections. The support and the mowing unit are equipped with an adjustment unit for adjusting the distance between the mowing units according to the grass height. The vehicle body and the two mowing units are equipped with a drive unit. The mowing unit includes a C-shaped mounting frame fixedly connected between two adjacent sliding columns. The mounting frame is equipped with a grass-chopping component. The lower part of the mounting frame is equipped with a feeding component for gathering grass together and guiding it into the grass-chopping component while cutting the grass.

[0007] In one possible implementation, the adjustment unit includes an electric telescopic frame mounted on a support and a connecting column fixedly connected to the front and rear sides of the mounting frame, wherein the end of the connecting column away from the mounting frame is hinged to the electric telescopic frame.

[0008] In one possible implementation, the grass-chopping assembly includes an arc-shaped cavity formed on the right cavity wall of the mounting frame and two partitions symmetrically fixedly connected to the arc-shaped cavity. The two partitions are rotatably connected to a rotating shaft, and a mounting cylinder is fixedly connected to the outside of the rotating shaft. Several blades are hinged at equal intervals along the axial and circumferential directions on the outer wall of the mounting cylinder.

[0009] In one possible implementation, the feeding assembly includes a mounting base fixedly connected between the front and rear opposite sides of the mounting frame and having an internal cavity. Several wedge-shaped seats are fixedly connected at equal intervals on the left end face of the mounting base via a fixing rod. A wedge plate is fixedly connected to the front of the left end face of the mounting base. Each wedge seat has a columnar groove. A rotating column passing through the columnar groove is rotatably connected to the wedge seat. A pawl wheel is fixedly connected to the outer wall of the rotating column and located in the columnar groove. Several cutters cooperating with the pawl wheel are fixedly connected at equal intervals on the left end face of the mounting base and below the pawl wheel.

[0010] In one possible implementation, the drive unit includes a mounting slot on the vehicle body, a strip box with an upper opening fixedly connected to the bottom of the mounting slot, a slide block slidably connected in the strip box, a top spring fixedly connected between the slide block and the strip box, a drive motor fixedly connected to the upper end face of the slide block via a connecting frame, a drive wheel fixedly connected to the front end of the rotating shaft through the front wall panel of the mounting frame, and the output shaft of the drive motor fixedly connected to the same drive wheel, and a drive belt rotatably connected to the outside of the drive wheel.

[0011] In one possible implementation, the uniformly distributed discharge section includes a cylinder fixedly connected to the lower end face of the vehicle body by a hanger. A rotating roller is rotatably connected in the cylinder. Spiral blades are symmetrically fixedly connected to the outer wall of the rotating roller. A plurality of annular grooves are equidistantly formed between the spiral blades and the rotating roller along the axial direction of the rotating roller. A plurality of toothed plates located in the annular grooves are equidistantly fixedly connected to the inner wall of the cylinder, and the toothed plates are arranged in a plurality of rows corresponding to the annular grooves along the axial direction of the rotating roller.

[0012] In one possible implementation, the material conveying mechanism includes a conveying frame fixedly connected between the front and rear opposite sides of the vehicle body and communicating with the cylinder. A telescopic tube communicating with the arc-shaped cavity is fixedly connected to the mounting frame, the lower end of the telescopic tube is connected to the upper part of the conveying frame, and a feeding unit is provided in the conveying frame.

[0013] In one possible implementation, the lower part of the cylinder is provided with a plurality of discharge holes at equal intervals along the axial direction, and the discharge holes are arranged in two rows symmetrically above and below. The lower part of the vehicle body is fixedly connected to a second drive motor through a fixing plate, and the rear end of the output shaft of the second drive motor is fixedly connected to the front part of the rotating roller.

[0014] In one possible implementation, the front end face of the mounting base has several through slots equidistantly spaced, corresponding to the rotating column. The bottom of the mounting base cavity and both sides of each through slot are rotatably connected to guide wheels. The lower end face of the mounting base is fixedly connected to a drive motor three via a connecting plate. The output shaft of the drive motor three, the guide wheels, and the lower end of the rotating column are connected by a pulley that passes through the through slot.

[0015] In one possible implementation, a rectangular cover is fixedly connected to the upper end face of the support and movably sleeved outside the electric telescopic frame. A sliding groove for the connecting column to slide is opened on the side wall panel of the two rectangular covers that are close to each other.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages:

[0017] In this invention, by adjusting the spacing between mowing units according to the height of the grass, and by having the mowing units arranged in a staggered, stepped manner to harvest the upper and lower halves of the tall grass separately, it is ensured that the tall grass is cut off completely, eliminating the need for repeated rolling or multiple rounds of work. This significantly improves the integrity of a single mowing operation. At the same time, the mowing force is distributed at different heights, which significantly reduces the pushing force on the grass and effectively prevents the grass from being knocked down and left hanging due to loss of uprightness.

[0018] In this invention, the cylinder, roller, spiral blade and toothed plate in the uniformly distributed discharge section are combined to perform secondary fine crushing of the cut grass segments after the initial mowing. At the same time, the grass clippings are evenly discharged and spread on the ground, making the grass clippings shorter and ensuring that the grass clippings are evenly distributed on the surface of the grassland, thereby greatly improving the effect of fine crushing and returning to the field. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the fully automatic lawnmower provided by the present invention.

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the vehicle body provided by the present invention.

[0022] Figure 3 This is a schematic diagram of the segmented mowing unit installation structure provided by the present invention.

[0023] Figure 4 This is a schematic diagram of the drive unit structure provided by the present invention.

[0024] Figure 5 This is a schematic diagram of the grass-chopping component structure provided by the present invention.

[0025] Figure 6 This is a schematic diagram of the cross-sectional structure of the feeding component provided by the present invention from a bottom view.

[0026] Figure 7 This is a cross-sectional view of the uniformly distributed discharge section provided by the present invention.

[0027] Figure 8 This is a schematic diagram of the cross-sectional structure of the cylinder provided by the present invention.

[0028] The above figures include the following reference numerals:

[0029] 1. Vehicle body; 2. Support; 3. Segmented mowing section; 31. Support plate; 32. Slide chute; 33. Slide column; 34. Adjustment unit; 341. Electric telescopic frame; 342. Connecting column; 35. Drive unit; 351. Mounting slot; 352. Strip box; 353. Drive motor one; 354. Transmission wheel; 355. Transmission belt; 36. Frame; 37. Hay chopping assembly; 371. Arc cavity; 372. Partition plate; 373. Shaft; 374. Blade; 3 8. Feeding assembly; 381. Mounting base; 382. Wedge seat; 383. Wedge plate; 384. Claw wheel; 385. Cutter; 386. Guide wheel; 387. Drive motor three; 388. Pulley assembly; 4. Discharge section; 41. Cylinder; 42. Rotary roller; 43. Spiral sprocket; 44. Annular groove; 45. Toothed plate; 46. Discharge hole; 47. Drive motor two; 5. Conveying mechanism; 51. Conveying frame; 52. Telescopic tube; 6. Rectangular cover. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4This invention provides a technical solution: a fully automatic lawn mower, comprising a vehicle body 1, with supports 2 symmetrically fixedly connected to the front and rear ends of the vehicle body 1. Both supports 2 are provided with a segmented cutting section 3 for segmenting and pulverizing the grass according to its height. A uniform discharge section 4 is installed in the middle of the vehicle body 1 for further refining and pulverizing the grass processed by the segmented cutting section 3 and simultaneously discharging the grass evenly. A conveying mechanism 5 is installed on the vehicle body 1 to connect the segmented cutting section 3 and the uniform discharge section 4. The segmented cutting section 3 includes two support plates 31 respectively fixedly connected to the upper surfaces of the supports 2, symmetrically opened grooves 32 on the support plates 31, and a slidably connected section on the groove. The sliding column 33 in 32 has a mowing unit installed between two adjacent sliding columns 33. The two mowing units are arranged in a staggered manner to harvest tall grass in sections. The support 2 and the mowing unit are provided with a spacing adjustment unit 34 for adjusting the spacing between the mowing units according to the grass height. The vehicle body 1 and the two mowing units are provided with a drive unit 35. The mowing unit includes a C-shaped mounting frame 36 fixedly connected between two adjacent sliding columns 33. The mounting frame 36 is provided with a grass chopping component 37. The lower part of the mounting frame 36 is provided with a feeding component 38 for gathering grass together and feeding it into the grass chopping component 37 while cutting the grass.

[0032] Please see Figure 1 and Figure 3 In this embodiment, the adjustable unit 34 includes an electric telescopic frame 341 installed on the support 2 and a connecting column 342 fixedly connected to the front and rear sides of the mounting frame 36. The end of the connecting column 342 away from the mounting frame 36 is hinged to the electric telescopic frame 341. The electric telescopic frame 341 has the same structural principle as the existing scissor-type telescopic frame. A rectangular cover 6 is fixedly connected to the upper end face of the support 2 and is movably sleeved on the outside of the electric telescopic frame 341. A sliding groove is opened on the side wall of the two rectangular covers that are close to each other, so that the connecting column 342 can slide. The rectangular cover plays a protective role for the outside of the electric telescopic frame 341, and prevents hard block-shaped debris from entering the electric telescopic frame 341 during the mowing process and causing it to get stuck.

[0033] Please see Figure 3 and Figure 5 The grass-chopping assembly 37 includes an arc-shaped cavity 371 opened on the right cavity wall of the mounting frame 36 and two partitions 372 that are symmetrically fixedly connected in the arc-shaped cavity 371. The two partitions 372 are rotatably connected to a rotating shaft 373. An mounting cylinder is fixedly connected to the outside of the rotating shaft 373. Several blades 374 are hinged at equal intervals along the axial and circumferential directions on the outer wall of the mounting cylinder.

[0034] Please see Figure 5 and Figure 6The feeding assembly 38 includes a mounting base 381 fixedly connected between the front and rear opposite sides of the mounting frame 36 and having an internal cavity. Several wedge-shaped seats 382 are equidistantly fixed to the left end face of the mounting base 381 via a fixing rod. A wedge-shaped plate 383 is fixedly connected to the front of the left end face of the mounting base 381. Each wedge-shaped seat 382 has a columnar groove. A rotating column passing through the columnar groove is rotatably connected to the wedge-shaped seat 382. A pawl wheel 384 is fixedly connected to the outer wall of the rotating column and located within the columnar groove. The left end face of the mounting base 381... Several cutters 385 that cooperate with the pawl wheel 384 are fixedly connected at equal intervals below the pawl wheel 384. Several through slots corresponding to the rotating column are opened at equal intervals on the front end face of the mounting base 381. Guide wheels 386 are rotatably connected to the bottom of the mounting base 381 and on both sides of each through slot. A drive motor 387 is fixedly connected to the lower end face of the mounting base 381 through a connecting plate. The output shaft of the drive motor 387, the guide wheels 386 and the lower end of the rotating column are connected by a belt pulley 388 that passes through the through slot.

[0035] Please see Figure 4 and Figure 5 The drive unit 35 includes a mounting slot 351 on the vehicle body 1. A strip box 352 with an upper opening is fixedly connected to the bottom of the mounting slot 351. A slide block is slidably connected in the strip box 352. A top spring is fixedly connected between the slide block and the strip box 352. A drive motor 353 is fixedly connected to the upper end face of the slide block through a connecting frame. The front end of the rotating shaft 373 passes through the front wall panel of the mounting frame 36 and is fixedly connected to a transmission wheel 354. The output shaft of the drive motor 353 is also fixedly connected to the same transmission wheel 354. A transmission belt 355 is rotatably connected to the outside of the transmission wheel 354.

[0036] The electric telescopic frame 341 extends or retracts according to the height of the grass. The electric telescopic frame 341 then moves the mounting frame 36 via the connecting column 342, adjusting the distance between the two mounting frames 36 so that each frame moves to a suitable position. The longitudinal movement of the mounting frames 36 simultaneously moves the transmission wheel 354. The change in position of the transmission wheel 354 in turn moves the transmission belt 355. The transmission belt 355 then drives the drive motor 353 to move laterally via the transmission wheel 354. The drive motor 353 then drives the slide block to slide within the strip box 352, thus keeping the transmission belt 355 constantly taut. Next, the remote-controlled vehicle 1 moves on the ground, while simultaneously controlling the operation of drive motor 353 and drive motor 387. As the vehicle 1 moves, it drives the wedge seat 382 to pass over the weeds. Under the action of the inclined surface of the wedge seat 382, ​​the weeds are divided into multiple bundles and then guided into the space between two adjacent wedge seats 382. Drive motor 387 drives the rotating column to rotate through the pulley 388. The rotating column then drives the pawl wheel 384 to rotate. The pawl wheel 384 pushes the guided weeds to rotate synchronously. When the weeds are pushed to the position of the cutter 385, the weeds will be cut by the cutter. Then the cut weeds come into contact with the blade 374.

[0037] The drive motor 353 drives the drive wheel 354 to rotate via the transmission belt 355. The drive wheel 354 then drives the mounting cylinder to rotate via the rotating shaft 373. The mounting cylinder then drives the blade 374 to rotate. The rotating blade 374 pulls the weeds into the arc-shaped cavity 371 for crushing. Since the two mowing units are arranged in a stepped manner, the upper mowing unit will contact the weeds first during the movement of the vehicle body 1. The upper mowing unit will cut off and crush the upper half of the weeds it contacts. Then, the lower mowing unit will contact the lower part of the weeds after the upper half has been cut, and cut off and crush the lower half of the weeds. This achieves segmented harvesting of tall grass, ensuring that the tall grass can be completely crushed, while also avoiding the situation where the tall grass is crushed and cannot be harvested.

[0038] Please see Figure 2 , Figure 7 and Figure 8In this embodiment, the uniformly distributed discharge section 4 includes a cylinder 41 fixedly connected to the lower end face of the vehicle body 1 by a hanger. A rotating roller 42 is rotatably connected in the cylinder 41. Spiral blades 43 are symmetrically fixedly connected to the outer wall of the rotating roller 42. A plurality of annular grooves 44 are equidistantly opened between the spiral blades 43 and the rotating roller 42 along the axial direction of the rotating roller 42. A plurality of toothed plates 45 located in the annular grooves 44 are equidistantly fixedly connected to the inner wall of the cylinder 41. The toothed plates 45 are equidistantly arranged in a plurality of rows corresponding to the annular grooves 44 along the axial direction of the rotating roller 42. A plurality of discharge holes 46 are equidistantly opened in the lower part of the cylinder 41 along the axial direction. The discharge holes 46 are symmetrically arranged in two rows. A second drive motor 47 is fixedly connected to the lower part of the vehicle body 1 by a fixing plate. The rear end of the output shaft of the second drive motor 47 is fixedly connected to the front part of the rotating roller 42.

[0039] Please see Figure 2 The material conveying mechanism 5 includes a conveying frame 51 fixedly connected between the front and rear opposite sides of the vehicle body 1 and communicating with the cylinder 41. A telescopic tube 52 communicating with the arc cavity 371 is fixedly connected to the mounting frame 36. The lower end of the telescopic tube 52 is connected to the upper part of the conveying frame 51. A feeding unit is provided in the conveying frame 51. The feeding unit adopts the same conveying structure principle as the existing conveying equipment. The specific structure of the feeding unit includes several rotating shafts equidistantly rotatably connected between the front and rear cavity walls of the conveying frame 51. A rotating belt is rotatably connected to the outside of the rotating shafts. Several levers are fixedly connected at equal intervals along the outer wall of the rotating belt along its own path. Several rows of levers are equidistantly arranged along the longitudinal direction of the front and rear of the conveying frame 51. A drive motor is fixedly connected to the front end of the drive motor. The output shaft of the drive motor is fixedly connected to the front end of one of the rotating shafts.

[0040] After being crushed in the arc-shaped cavity 371, the weeds then enter the telescopic tube 52. The crushed weeds then fall into the conveyor frame 51. The drive motor 4 drives the rotating shaft to rotate, which in turn drives the rotating belt to rotate. The rotating belt then drives the lever to move, which then pushes the crushed weeds into the cylinder 41. The drive motor 47 drives the rotating roller 42 to rotate, which in turn drives the spiral blade 43 to rotate. The spiral blade 43 gradually spreads the crushed weeds along the axial direction of the cylinder 41 from the middle to both sides. The crushed weeds move in the area between the cylinder 41 and the rotating roller 42 and collide with the toothed plate 45, further crushing the weeds. Then, when the weeds are driven by the spiral blade 43 through the discharge hole 46, the crushed weeds are thrown out of the discharge hole 46 and fall to the ground, thus ensuring that they are thoroughly crushed and evenly discharged.

[0041] During operation, the spacing between the two mowing units is adjusted using the spacing adjustment unit 34 according to the height of the weeds. Then, the drive unit 35 is controlled to drive the mowing units to run. Next, the vehicle body 1 is controlled to move, and the vehicle body 1 drives the mowing units to move synchronously. The upper mowing unit will first contact the upper half of the weeds and cut it to break it up. Then, the lower mowing unit will contact the remaining lower half of the weeds and cut it up to break it up. The weeds cut by the mowing units enter the conveying mechanism 5. Then, the conveying mechanism 5 is controlled to run to transport the weeds to the uniform discharge section 4. Finally, the uniform discharge section is controlled to run to further break up the weeds and evenly discharge the weed pieces to the ground.

[0042] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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.

[0043] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

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

Claims

1. A fully automatic lawnmower, comprising a vehicle body, characterized in that: The vehicle body is symmetrically fixed with supports at the front and rear ends. Both supports are provided with a segmented cutting section for cutting and crushing grass according to its height. The middle of the vehicle body is equipped with a uniform discharge section for further refining and crushing the grass after the segmented cutting section and discharging the grass evenly. The vehicle body is equipped with a conveying mechanism for connecting the segmented cutting section and the uniform discharge section. The segmented mowing unit includes two support plates fixedly connected to the upper end face of the support, symmetrically opened grooves on the support plates, and sliding columns slidably connected in the grooves. A mowing unit is installed between two adjacent sliding columns. The two mowing units are arranged in a staggered manner to harvest tall grass in segments. An adjustment unit for adjusting the distance between the mowing units according to the grass height is provided between the support and the mowing units. A drive unit is provided between the vehicle body and the two mowing units. The mowing unit includes a C-shaped mounting frame fixedly connected between two adjacent sliding columns at the front and rear. The mounting frame is equipped with a grass-shredding component, and a feeding component is installed at the bottom of the mounting frame to gather grass together and guide it into the grass-shredding component while cutting the grass. The grass-chopping assembly includes an arc-shaped cavity opened on the right cavity wall of the mounting frame and two partitions symmetrically fixedly connected in the arc-shaped cavity. The two partitions are rotatably connected to each other by a rotating shaft. The drive unit includes a mounting slot on the vehicle body. A strip box with an upper opening is fixedly connected to the bottom of the mounting slot. A slide block is slidably connected in the strip box. A top spring is fixedly connected between the slide block and the strip box. A drive motor is fixedly connected to the upper end face of the slide block through a connecting frame. The front end of the rotating shaft passes through the front wall panel of the mounting frame and is fixedly connected to a transmission wheel. The output shaft of the drive motor is also fixedly connected to the same transmission wheel. A transmission belt is rotatably connected to the outside of the transmission wheels.

2. The fully automatic lawnmower according to claim 1, characterized in that: The adjustable unit includes an electric telescopic frame installed on the support and a connecting column fixedly connected to the front and rear sides of the mounting frame. The end of the connecting column away from the mounting frame is hinged to the electric telescopic frame.

3. The fully automatic lawnmower according to claim 1, characterized in that: A mounting cylinder is fixedly connected to the outside of the rotating shaft, and several blades are hinged at equal intervals along the axial and circumferential directions on the outer wall of the mounting cylinder.

4. The fully automatic lawnmower according to claim 1, characterized in that: The feeding assembly includes a mounting base fixedly connected between the front and rear opposite sides of the mounting frame and having an internal cavity. Several wedge-shaped seats are fixedly connected at equal intervals on the left end face of the mounting base via a fixing rod. A wedge plate is fixedly connected to the front of the left end face of the mounting base. Each wedge seat has a columnar groove. A rotating column passing through the columnar groove is rotatably connected to the wedge seat. A pawl wheel is fixedly connected to the outer wall of the rotating column and located in the columnar groove. Several cutters that cooperate with the pawl wheel are fixedly connected at equal intervals on the left end face of the mounting base and below the pawl wheel.

5. The fully automatic lawnmower according to claim 1, characterized in that: The uniformly distributed discharge section includes a cylinder fixedly connected to the lower end face of the vehicle body by a hanger. A rotating roller is rotatably connected in the cylinder. Spiral blades are symmetrically fixedly connected to the outer wall of the rotating roller. Several annular grooves are equidistantly formed between the spiral blades and the rotating roller along the axial direction of the rotating roller. Several toothed plates located in the annular grooves are equidistantly fixedly connected to the inner wall of the cylinder. The toothed plates are arranged in several rows equidistantly along the axial direction of the rotating roller, corresponding to the annular grooves.

6. The fully automatic lawnmower according to claim 5, characterized in that: The material conveying mechanism includes a conveying frame fixedly connected between the front and rear opposite sides of the vehicle body and communicating with the cylinder. A telescopic tube communicating with the arc-shaped cavity is fixedly connected to the mounting frame. The lower end of the telescopic tube is connected to the upper part of the conveying frame. A feeding unit is provided in the conveying frame.

7. A fully automatic lawnmower according to claim 5, characterized in that: The lower part of the cylinder has several discharge holes equidistantly arranged along the axial direction, and the discharge holes are arranged in two rows symmetrically. The lower part of the vehicle body is fixedly connected to the second drive motor through a fixing plate, and the rear end of the output shaft of the second drive motor is fixedly connected to the front part of the rotating roller.

8. A fully automatic lawnmower according to claim 4, characterized in that: The front end face of the mounting base has several through slots equidistantly opened, corresponding to the rotating column. The bottom of the mounting base cavity and both sides of each through slot are rotatably connected to guide wheels. The lower end face of the mounting base is fixedly connected to a drive motor three through a connecting plate. The output shaft of the drive motor three, the guide wheels and the lower end of the rotating column are connected by a pulley that passes through the through slot.

9. A fully automatic lawnmower according to claim 2, characterized in that: The upper end face of the support is fixedly connected to a rectangular cover that is movably sleeved outside the electric telescopic frame. A sliding groove is provided on the side wall of the two rectangular covers that are close to each other, allowing the connecting column to slide.

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