CN211831928U

CN211831928U - High-efficient grass cutting device

Info

Publication number: CN211831928U
Application number: CN202020133877.9U
Authority: CN
Inventors: 郭月义; 郜神峰
Original assignee: Beijing Landscape Light Landscape Engineering Co ltd
Current assignee: Beijing Landscape Light Landscape Engineering Co ltd
Priority date: 2020-01-20
Filing date: 2020-01-20
Publication date: 2020-11-03
Anticipated expiration: 2030-01-20

Abstract

The utility model relates to a high-efficiency mowing device, which comprises a frame body, a mowing assembly, a connecting frame, a roller and an elastic adjusting assembly; the connecting frame is arranged below the frame body; supporting legs are arranged below the connecting frame, and the rollers are rotationally connected with the supporting legs; the elastic adjusting component comprises a threaded rod, a threaded sleeve, a pressure spring and a guide rod; the threaded rod is arranged on two edges opposite to the connecting frame and is positioned in the center of each edge; the threaded rod penetrates through the upper surface and the lower surface of the frame body and is in sliding fit with the frame body, the lower end of the threaded rod is fixedly connected with the connecting frame, and the upper end of the threaded rod is provided with a threaded part; the threaded sleeve is in threaded connection with the threaded part; the pressure spring is sleeved on the threaded rod and positioned between the frame body and the connecting frame, and the pressure spring is always in a compressed state; the guide rods are symmetrically arranged on two sides of the threaded rod; the guide rod penetrates through the upper surface and the lower surface of the frame body and is in sliding fit with the frame body, and the lower end of the guide rod is fixedly connected with the connecting frame. The utility model discloses a set up the elasticity adjusting part, reduce the damage to the motor bearing when jolting.

Description

High-efficient grass cutting device

Technical Field

The utility model belongs to the technical field of the lawn mower technique and specifically relates to a high-efficient grass cutting device is related to.

Background

The lawn planting is indispensable no matter in urban greening or garden construction, and the lawn can be planted in some football fields and golf courses; the lawn not only can provide places for people to have a rest and an entertainment, but also can purify air, and creates a comfortable and fresh living environment for people.

The lawn is not built once and for all, and needs to be nursed and maintained, the regular trimming of the lawn is one of the most important nurturing means, the regular trimming of the lawn is not only beautiful, but also can promote the tillering of the grass, increase the density, the flatness and the elasticity of the lawn, prolong the service life of the lawn, and a mowing device is needed when the lawn is trimmed.

The Chinese patent with application publication number CN107996128A discloses a high-efficiency mowing device, which comprises a frame, a driving motor and a storage battery; the front end of the left side of the frame is fixedly connected with a cutting cylinder through a bolt, a driving shaft is arranged in the cutting cylinder, and the driving shaft is fixedly connected with a scraper; a cutting device is arranged at the position opposite to the scraper and comprises saw blades and a fan-shaped tool rest, and a plurality of groups of saw blades which are distributed in an arc shape are fixedly connected in the arc-shaped tool rest and close to the edge of the fan-shaped tool rest; the lower end of the cutting cylinder is provided with an arc-shaped slot, and a grid net is arranged in the arc-shaped slot. The rotary grass cutter is provided with the cutting cylinder with the grid net and the rotary saw blade, so that grass is rotatably cut, the cutting efficiency is high, and the blade is protected; the straw chip collecting device is provided with the rotary scraping plate and the material conveying pipe which is tangentially communicated with the cutting cylinder, straw chips are efficiently collected, and meanwhile, the straw chips are extruded through the bolt blade roller, so that the single collection amount of the straw chips by the collecting cylinder is increased.

However, the above-mentioned device has some problems, when the lawn is trimmed, the mowing device needs to be pushed in the lawn, the lawn is a soil ground, and there are some low-lying places or small stones on the ground, when the mowing device is pushed to move in the lawn, after the mowing device runs to the low-lying places or wheels press the small stones, the mowing device will generate a large jolt, a large instantaneous impact force will be applied to the motor, a radial torsion will be generated to the bearing in the motor by the long shaft of the motor, a large burden will be caused to the bearing of the motor, and the bearing in the motor will be easily damaged after long-time use.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a high-efficient grass cutting device through setting up the elasticity adjusting part, reduces the damage to the motor bearing when jolting.

The above object of the present invention is achieved by the following technical solutions:

a high-efficiency mowing device comprises a frame body, a mowing assembly and rollers; the mowing assembly comprises a cutting drum, a motor, a rotating shaft and a cutting knife; one end of the frame body is fixed with a handle which is arranged obliquely; the cutting cylinder is of a cylindrical structure, the cutting cylinder is fixed on the frame body, a plurality of through grooves are formed in the outer wall, close to the ground, of the cutting cylinder, and an opening is formed in the outer wall of the cutting cylinder; the motor is fixed on the frame body and is positioned at one end of the cutting cylinder; the rotating shaft is rotatably supported in the cutting cylinder, and one end of the rotating shaft is coaxially and fixedly connected with the output end of the motor; the cutting knife is fixed on the rotating shaft; the roller is arranged below the frame body; the device also comprises a connecting frame and an elastic adjusting component; the connecting frame is of a rectangular frame structure and is arranged below the frame body; supporting legs are arranged below the connecting frame, and the rollers are rotationally connected with the supporting legs; the elastic adjusting component is arranged between the connecting frame and the frame body; the elastic adjusting component comprises a threaded rod, a threaded sleeve, a pressure spring and a guide rod; the threaded rod is arranged on two edges opposite to the connecting frame and is positioned in the center of each edge; the threaded rod penetrates through the upper surface and the lower surface of the frame body and is in sliding fit with the frame body, the lower end of the threaded rod is fixedly connected with the connecting frame, and the upper end of the threaded rod is provided with a threaded part; the threaded sleeve is in threaded connection with the threaded part; the pressure spring is sleeved on the threaded rod and positioned between the frame body and the connecting frame, the pressure spring is always in a compressed state, and the lower end of the threaded sleeve is abutted against the frame body under the action of the pressure spring; the guide rods are symmetrically arranged on two sides of the threaded rod; the guide rod penetrates through the upper surface and the lower surface of the frame body and is in sliding fit with the frame body, and the lower end of the guide rod is fixedly connected with the connecting frame.

By adopting the technical scheme, the motor is started, the motor drives the rotating shaft to rotate, the rotating shaft drives the cutting knife to rotate, the grass cutting device is pushed on the lawn, the grass enters the cutting barrel from the through groove, the grass is cut off under the action of the cutting knife, and cut-off grass scraps are ejected from the opening of the cutting barrel under the driving of the cutting knife; when the stone is pressed through the hollow part or the roller, the frame body and the connecting frame have relative displacement, the pressure spring contracts at the moment, the instantaneous impact force generated after the frame body falls is buffered under the action of the pressure spring, and the radial torsion of the rotating shaft on the bearing in the motor is buffered, so that the load of the rotating shaft on the bearing is reduced, and the damage to the motor caused by violent jolt is reduced; in addition, when cutting different kinds of lawns, still need to control the stubble height on lawn according to actual conditions, the height of the lawn of football court for example can be different with the stubble height of gardens grass, to different kinds of grass, in order to guarantee its normal growth, also need control different stubble heights, can adjust the relative height between link and the support body through twisting the screw sleeve, and then adjust the height of cutting a section of thick bamboo, thereby can control the stubble height of lawn grass, when pruning different kinds of lawns, can adjust the height of cutting a section of thick bamboo according to actual conditions, thereby the suitability has been improved.

The utility model discloses can further configure into: the cutting knife comprises a knife rest and a blade; the cutter frame consists of two sector plates, the two sector plates are respectively fixed at two ends of the rotating shaft, the plate surfaces of the two sector plates are vertical to the rotating shaft and are arranged oppositely, and the sector edges of the sector plates face the inner wall of the cutting cylinder; the blade has a plurality ofly, the both ends of blade respectively with two sector plate fixed connection, and a plurality of blades are the arc at the fan-shaped edge of two sector plates and arrange.

Through adopting above-mentioned technical scheme, through setting up a plurality of blades, improve cutting efficiency.

The utility model discloses can further configure into: the high-efficiency mowing device further comprises a conveying barrel and a collecting barrel; one end of the material conveying cylinder is communicated with one end of the cutting cylinder, which is provided with an opening; the collecting cylinder is fixed on the frame body, one end of the collecting cylinder is fixedly connected and communicated with one end of the conveying cylinder, which deviates from the collecting cylinder, and a discharge hole is formed in one end of the collecting cylinder, which deviates from the conveying cylinder.

Through adopting above-mentioned technical scheme, the grass of cutting off is thrown into the defeated feed cylinder by pivoted cutting knife, then gets into the surge drum, prevents that the grass bits that cut off from scattering and is difficult for clearing up.

The utility model discloses can further configure into: the mowing assembly further comprises a blade; the scraper is fixed on the other side of the rotating shaft opposite to the cutting knife.

Through adopting above-mentioned technical scheme, the scraper blade carries out quick stirring to the grass of cutting down in the cutting cylinder, can be faster throw off the grass of cutting off into the conveying cylinder.

The utility model discloses can further configure into: the number of the supporting legs is four, two of the supporting legs are in one group, two groups of the supporting legs are respectively fixed at one end of the connecting frame close to the cutting cylinder and one end of the connecting frame close to the collecting cylinder, and two of the rollers are in one group and are respectively and correspondingly fixed on the two groups of the supporting legs; the threaded rod is located between each set of pulleys.

Through adopting above-mentioned technical scheme, two threaded rods are located the line of cutting section of thick bamboo and collecting vessel focus, and when the motion, stability is better.

The utility model discloses can further configure into: the high-efficiency mowing device further comprises a feeding assembly; the feeding assembly comprises a feeding shaft, a helical blade, a transmission shaft, a driven wheel, a driving wheel and a chain; the feeding shaft is rotatably supported in the collecting cylinder, the axis of the feeding shaft is superposed with the axis of the collecting cylinder, one end of the feeding shaft, which is far away from the material conveying cylinder, penetrates through the end face of the collecting cylinder, and a first bevel gear is coaxially and fixedly connected to one end of the feeding shaft, which penetrates through the end face of the collecting cylinder, and is positioned above the discharge port; the helical blade is arranged on the periphery of the feeding shaft; the transmission shaft is rotatably supported on the frame body, the axis of the transmission shaft is vertical to the axis of the feeding shaft, one end of the transmission shaft is coaxially and fixedly connected with a second bevel gear, and the second bevel gear is meshed with the first bevel gear; the driven wheel is coaxially and fixedly connected with one end of the transmission shaft, which is far away from the second bevel gear; the driving wheel is coaxially and fixedly connected with the rotating shaft; two ends of the chain are respectively sleeved on the driving wheel and the driven wheel.

Through adopting above-mentioned technical scheme, the motor can drive the action wheel when rotating and rotate, and the action wheel passes through the chain and drives from the driving wheel rotation, drives the transmission shaft rotation from the driving wheel, and the power of driven shaft passes through second bevel gear and transmits for first bevel gear, and first bevel gear drives the pay-off axle and rotates, and the helical blade on the pay-off axle periphery drives the discharge gate discharge from the collecting vessel of grass bits, and the path that exhaust grass bits passed through along grass cutting device is evenly piled up, makes things convenient for the staff to clear up.

The utility model discloses can further configure into: a baffle is fixed above the discharge port, the baffle is arranged obliquely downwards, and the first bevel gear is located above the baffle.

Through adopting above-mentioned technical scheme, the baffle of slope can block and guide exhaust grass bits, makes it pile up neatly more, makes staff's clearance more convenient.

The utility model discloses can further configure into: the supporting leg comprises an inclined part and a vertical part; the inclined part inclines towards the outer side of the connecting frame, and the upper end of the inclined part is fixedly connected with the connecting frame; the vertical part is positioned at the lower end of the inclined part and is integrally formed with the inclined part, and the vertical part forms an installation space outside the connecting frame; a bulge is convexly arranged on the side face of one side of the roller, the bulge is in a circular truncated cone shape, the axis of the bulge is overlapped with the axis of the roller, one end of the bulge, which is close to the side face of the roller, is a large end, one end of the bulge, which is far away from the side face of the roller, is a small end, the diameter of the small end of the bulge is equal to the length of the vertical part, and the end face of the small end of the bulge; the end face of the small end of the bulge is coaxially and fixedly connected with a wheel shaft, the wheel shaft penetrates through the side face of the vertical part and is in running fit with the vertical part, and a limiting block is arranged at one end of the wheel shaft, which penetrates through the vertical part.

Through adopting above-mentioned technical scheme, the round platform form arch between gyro wheel and the vertical portion can fill the gap that forms between gyro wheel and the supporting leg well, and bellied tip terminal surface is laminated with vertical portion, and higher grass or weeds are difficult for coiling the heap on the arch and hank to reduce grass or weeds to gyro wheel pivoted influence.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through the arrangement of the connecting frame and the elastic adjusting component, the load of the rotating shaft on a motor bearing during bumping can be reduced;

2. through setting up the baffle, the baffle that can incline can block and guide exhaust grass bits, makes it pile up neatly more, makes staff's clearance more convenient.

Drawings

FIG. 1 is a schematic view of a high efficiency mowing device;

FIG. 2 is a cross-sectional view of a high-efficiency mowing device;

FIG. 3 is a schematic view of the engagement of the rollers with the support legs.

In the figure, 1, a frame body; 10. a handle; 2. a mowing assembly; 20. cutting the cylinder; 200. a through groove; 21. a motor; 22. a rotating shaft; 23. a squeegee; 24. a cutting knife; 240. a tool holder; 241. a blade; 25. a delivery cylinder; 26. a collection canister; 260. a baffle plate; 3. a feeding assembly; 30. a feed shaft; 300. a first bevel gear; 31. a helical blade; 32. a drive shaft; 320. a second bevel gear; 33. a driven wheel; 34. a driving wheel; 35. a chain; 4. a connecting frame; 40. supporting legs; 400. an inclined portion; 401. a vertical portion; 5. a roller; 50. a protrusion; 51. a limiting block; 6. an elastic adjustment assembly; 61. a threaded rod; 610. a threaded portion; 62. a threaded sleeve; 63. a pressure spring; 64. a guide rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, a high-efficiency mowing device disclosed by the invention comprises a frame body 1, a mowing assembly 2, a feeding assembly 3, a connecting frame 4, a roller 5 and an elastic adjusting assembly 6; the frame body 1 is horizontally arranged, one end of the frame body 1 is fixedly provided with a U-shaped handle 10, and the handle 10 is obliquely and upwards arranged; the mowing assembly 2 comprises a cutting drum 20, a motor 21, a rotating shaft 22, a scraping plate 23, a cutting knife 24, a material conveying barrel 25 and a collecting drum 26; the cutting cylinder 20 is of a cylindrical structure, the cutting cylinder 20 is fixed on the frame body 1, a plurality of through grooves 200 are arranged on the outer wall of the cutting cylinder 20 close to the ground, and the plurality of through grooves 200 are arranged in a grid shape; the motor 21 is fixed on the frame body 1 and is positioned at one end of the cutting cylinder 20; the rotating shaft 22 is rotatably supported in the cutting cylinder 20, and one end of the rotating shaft 22 is coaxially and fixedly connected with the output end of the motor 21; the scraping plate 23 is arranged in the cutting cylinder 20, and one edge of the scraping plate is fixedly connected with the rotating shaft 22; the cutting knife 24 is fixed on the other side of the rotating shaft 22 opposite to the scraper 23; the cutting blade 24 comprises a blade holder 240 and a blade 241; the tool holder 240 is composed of two sector plates, the two sector plates are respectively fixed at two ends of the rotating shaft 22, the plate surfaces of the two sector plates are perpendicular to the rotating shaft 22 and are arranged oppositely, and the sector edges of the sector plates face the inner wall of the cutting cylinder 20; the number of the blades 241 is multiple, two ends of each blade 241 are fixedly connected with the two fan-shaped plates respectively, and the multiple blades 241 are arranged in an arc shape at the fan-shaped edges of the two fan-shaped plates; the material conveying cylinder 25 is obliquely arranged, and the lower end of the material conveying cylinder 25 is fixedly connected and communicated with the outer wall of the cutting cylinder 20; the collecting cylinder 26 is of a cylindrical structure, the collecting cylinder 26 is fixed on the frame body 1, one end of the collecting cylinder 26 is fixedly connected and communicated with the higher end of the material conveying cylinder 25, and a discharge hole is formed in one end, deviating from the material conveying cylinder 25, of the collecting cylinder 26.

Referring to fig. 1 and 2, the feeding assembly 3 includes a feeding shaft 30, a helical blade 31, a transmission shaft 32, a driven wheel 33, a driving wheel 34, and a chain 35; the feeding shaft 30 is rotatably supported in the collecting cylinder 26, the axis of the feeding shaft is overlapped with the axis of the collecting cylinder 26, one end, far away from the conveying cylinder 25, of the feeding shaft 30 penetrates through the end face of the collecting cylinder 26, a first bevel gear 300 is coaxially and fixedly connected to one end, penetrating through the end face of the collecting cylinder 26, of the feeding shaft 30, and the first bevel gear 300 is located above the discharge hole; the helical blade 31 is provided on the outer periphery of the feed shaft 30; the transmission shaft 32 is rotatably supported on the collecting cylinder 26 and the frame body 1, the axis of the transmission shaft is vertical to the axis of the feeding shaft 30, a second bevel gear 320 is coaxially and fixedly connected to one end of the transmission shaft 32, and the second bevel gear 320 is meshed with the first bevel gear 300; the driven wheel 33 is coaxially fixedly connected with one end of the transmission shaft 32, which is far away from the second bevel gear 320; the driving wheel 34 is coaxially and fixedly connected with the rotating shaft 22; two ends of the chain 35 are respectively sleeved on the driving wheel 34 and the driven wheel 33; the connecting frame 4 is of a rectangular frame structure and is horizontally arranged below the frame body 1, four supporting legs 40 are fixed below the connecting frame 4, every two supporting legs 40 form one group, and two groups of supporting legs 40 are respectively fixed at one end of the connecting frame 4 close to the cutting cylinder 20 and one end of the connecting frame 4 close to the collecting cylinder 26; four rollers 5 are provided, and every two rollers are respectively and correspondingly fixed on the two groups of supporting legs 40; the elastic adjusting components 6 are two, the two elastic adjusting components 6 are symmetrically arranged at two ends, close to the cutting cylinder 20 and the collecting cylinder 26, of the connecting frame 4, and the elastic adjusting components 6 are arranged between the frame body 1 and the connecting frame 4.

Referring to fig. 1 and 2, the elastic adjustment assembly 6 includes a threaded rod 61, a threaded sleeve 62, a compression spring 63, and a guide rod 64; the threaded rod 61 is vertically arranged and positioned between each group of pulleys 5, the threaded rod 61 penetrates through the upper surface and the lower surface of the frame body 1 and is in sliding fit with the frame body 1, the lower end of the threaded rod 61 is fixedly connected with the connecting frame 4, and the upper end of the threaded rod 61 is provided with a threaded part 610; the two ends of the threaded sleeve 62 are open, threads are arranged on the inner wall of the threaded sleeve 62, and the threaded sleeve 62 is in threaded connection with the threaded part 610; the pressure spring 63 is sleeved on the threaded rod 61 and is positioned between the frame body 1 and the connecting frame 4, the pressure spring 63 is always in a compressed state, and the lower end of the threaded sleeve 62 is abutted against the frame body 1 under the action of the pressure spring 63; guide rod 64 has two and vertical settings, and two guide rod 64 symmetries set up in the both sides of threaded rod 61, and guide rod 64 pierces through support body 1 upper and lower surface and with support body 1 sliding fit, the lower extreme and the link 4 fixed connection of guide rod 64.

In practical application, the motor 21 is started, the motor 21 drives the rotating shaft 22 to rotate, the rotating shaft 22 drives the cutting knife 24 to rotate, the mowing device is pushed on the lawn, the grass enters the cutting cylinder 20 from the through groove 200, the grass is cut off under the action of the blade 241, the scraper 23 quickly stirs the cut grass in the cutting cylinder 20, and the cut grass is thrown into the collecting cylinder 26 from the conveying cylinder 25; the motor 21 can drive the driving wheel 34 to rotate when rotating, the driving wheel 34 drives the driven wheel 33 to rotate through the chain 35, the driven wheel 33 drives the transmission shaft 32 to rotate, the power of the driven shaft 32 is transmitted to the first bevel gear 300 through the second bevel gear 320, the first bevel gear 300 drives the feeding shaft 30 to rotate, the spiral blades 31 on the periphery of the feeding shaft 30 drive the grass clippings to be discharged from the discharge hole of the collecting cylinder 26, and the discharged grass clippings are uniformly accumulated along the path through which the mowing device passes, so that the cleaning of workers is convenient; when the stone is pressed by the potholes or the rollers, the frame body 1 and the connecting frame 4 have relative displacement, the pressure spring 63 contracts at the moment, the instant impact force generated after the frame body 1 falls down is buffered under the action of the pressure spring 63, and the radial torsion of the bearing in the motor 21 is buffered by the rotating shaft 22, so that the load of the rotating shaft 22 on the bearing is reduced, and the damage to the motor 21 caused by violent jolt is reduced; in addition, when cutting different kinds of lawns, still need to control the stubble height on lawn according to actual conditions, the height of the lawn of football court for example can be different with the stubble height of gardens grass, to different kinds of grass, in order to guarantee its normal growth, also need control different stubble heights, can adjust the relative height between link 4 and support body 1 through screwing the threaded sleeve 62, and then adjust the height of cutting barrel 20, thereby can control the stubble height of grass, when pruning different kinds of lawns, can adjust the height of cutting barrel 20 according to actual conditions, thereby improve the suitability.

In practical application, the roller 5 needs to roll in the lawn, sometimes the height of the grass is higher during the trimming, and in addition, some vine weeds may exist in the lawn, the grass or the vines may be wound and piled in the gap between the supporting leg 40 and the roller 5, the rotation of the roller is affected, when the weeds in the gap are too much, the roller 5 can be stuck and cannot normally operate, the use of the device is affected, and the scheme can be improved in order to reduce the grass or the weeds twisted in the gap formed by the roller 5 and the supporting leg 40.

Referring to fig. 3, the support leg 40 includes an inclined portion 400 and a vertical portion 401; the inclined part 400 inclines towards the outer side of the connecting frame 4, and the upper end of the inclined part is fixedly connected with the connecting frame 4; the vertical portion 401 is located at the lower end of the inclined portion 400 and is integrally formed with the inclined portion 400, and the vertical portion 401 forms an installation space outside the link frame 4; a bulge 50 is convexly arranged on the side surface of one side of the roller 5, the bulge 50 is in a circular truncated cone shape, the axis of the bulge 50 is overlapped with the axis of the roller 5, one end of the bulge 50, which is close to the side surface of the roller 5, is a large end, one end of the bulge, which is far away from the side surface of the roller, is a small end, the diameter of the small end of the bulge 50 is equal to the length of the vertical part 401, and the end surface of the small end of the bulge 50; a wheel axle is coaxially and fixedly connected to the end face of the small end of the protrusion 50, penetrates through the side face of the vertical portion 401 and is in rotating fit with the vertical portion 401, and a limiting block 51 is arranged at one end of the wheel axle penetrating through the vertical portion 401.

In practical application, the circular truncated cone-shaped bulge 50 between the roller 5 and the vertical part 401 can well fill up a gap formed between the roller 5 and the supporting leg 40, the small end face of the bulge 50 is attached to the vertical part 401, and high grass or weeds are not easy to wind and pile on the bulge 50, so that the influence of the grass or weeds on the rotation of the roller 5 is reduced.

In practice, when the lawn is to be cut, the motor 21 rotates faster, and therefore the feed material in the collection cylinder 26 rotates faster. When the helical blades 31 push the grass clippings to be discharged from the collecting cylinder 26, the grass clippings may form a spray shape, and the discharged grass clippings cannot be orderly accumulated, so that the grass clippings are relatively inconvenient to clean.

In order to solve the above problem, referring to fig. 2, a baffle 260 is fixed above the discharge hole, the baffle 260 is disposed obliquely downward, and the first bevel gear 300 is located above the baffle 260.

Through adopting above-mentioned technical scheme, the baffle 260 of slope can block and guide the grass bits that spout and come out, makes it pile up neatly more, makes staff's clearance more convenient.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A high-efficiency mowing device comprises a frame body (1), a mowing assembly (2) and rollers (5); the mowing assembly (2) comprises a cutting drum (20), a motor (21), a rotating shaft (22) and a cutting knife (24); one end of the frame body (1) is fixed with a handle (10), and the handle (10) is obliquely arranged; the cutting cylinder (20) is of a cylindrical structure, the cutting cylinder (20) is fixed on the frame body (1), a plurality of through grooves (200) are formed in the outer wall, close to the ground, of the cutting cylinder (20), and an opening is formed in the outer wall of the cutting cylinder (20); the motor (21) is fixed on the frame body (1) and is positioned at one end of the cutting cylinder (20); the rotating shaft (22) is rotatably supported in the cutting cylinder (20), and one end of the rotating shaft (22) is coaxially and fixedly connected with the output end of the motor (21); the cutting knife (24) is fixed on the rotating shaft (22); the roller (5) is arranged below the frame body (1); the method is characterized in that: the device also comprises a connecting frame (4) and an elastic adjusting component (6); the connecting frame (4) is arranged below the frame body (1); a supporting leg (40) is arranged below the connecting frame (4), and the roller (5) is rotationally connected with the supporting leg (40); the elastic adjusting component (6) is arranged between the connecting frame (4) and the frame body (1); the elastic adjusting assembly (6) comprises a threaded rod (61), a threaded sleeve (62), a pressure spring (63) and a guide rod (64); the threaded rod (61) is arranged on two edges opposite to the connecting frame (4) and is positioned in the center of each edge; the threaded rod (61) penetrates through the upper surface and the lower surface of the frame body (1) and is in sliding fit with the frame body (1), the lower end of the threaded rod (61) is fixedly connected with the connecting frame (4), and the upper end of the threaded rod (61) is provided with a threaded part (610); the threaded sleeve (62) is screwed with the threaded part (610); the pressure spring (63) is sleeved on the threaded rod (61) and is positioned between the frame body (1) and the connecting frame (4), the pressure spring (63) is always in a compression state, and the lower end of the threaded sleeve (62) is abutted against the frame body (1) under the action of the pressure spring (63); the guide rods (64) are symmetrically arranged at two sides of the threaded rod (61); the guide rod (64) penetrates through the upper surface and the lower surface of the frame body (1) and is in sliding fit with the frame body (1), and the lower end of the guide rod (64) is fixedly connected with the connecting frame (4).

2. A high efficiency mowing device according to claim 1, wherein: the cutting knife (24) comprises a knife rest (240) and a blade (241); the tool rest (240) is composed of two sector plates which are respectively fixed at two ends of the rotating shaft (22), the plate surfaces of the two sector plates are vertical to the rotating shaft (22) and are arranged oppositely, and the sector edges of the sector plates face the inner wall of the cutting cylinder (20); the blades (241) are multiple, two ends of each blade (241) are fixedly connected with the two fan-shaped plates respectively, and the blades (241) are arranged in an arc shape at the fan-shaped edges of the two fan-shaped plates.

3. A high efficiency mowing device according to claim 2, wherein: the high-efficiency mowing device further comprises a material conveying barrel and a collecting barrel (26); one end of the material conveying cylinder (25) is communicated with one end of the cutting cylinder (20) provided with an opening; the collecting cylinder (26) is fixed on the frame body (1), one end of the collecting cylinder (26) is fixedly connected and communicated with one end of the conveying cylinder (25) deviating from the collecting cylinder (26), and one end of the collecting cylinder (26) deviating from the conveying cylinder (25) is provided with a discharge hole.

4. A high efficiency mowing device according to claim 3, wherein: the mowing assembly (2) further comprises a blade (23); the scraper (23) is fixed on the other side of the rotating shaft (22) opposite to the cutting knife (24).

5. A high efficiency mowing device according to claim 3, wherein: the number of the supporting legs (40) is four, every two supporting legs (40) form a group, two groups of supporting legs (40) are respectively fixed at one end of the connecting frame (4) close to the cutting cylinder (20) and one end of the connecting frame (4) close to the collecting cylinder (26), every two rollers (5) form a group and are respectively and correspondingly fixed on the two groups of supporting legs (40); the threaded rod (61) is located between each set of pulleys.

6. A high efficiency mowing device according to claim 3, wherein: the high-efficiency mowing device further comprises a feeding component (3); the feeding assembly (3) comprises a feeding shaft (30), a spiral blade (31), a transmission shaft (32), a driven wheel (33), a driving wheel (34) and a chain (35); the feeding shaft (30) is rotatably supported in the collecting cylinder (26), the axis of the feeding shaft coincides with the axis of the collecting cylinder (26), one end, far away from the material conveying cylinder (25), of the feeding shaft (30) penetrates through the end face of the collecting cylinder (26), one end, penetrating through the end face of the collecting cylinder (26), of the feeding shaft (30) is coaxially and fixedly connected with a first bevel gear (300), and the first bevel gear (300) is located above the discharge hole; the helical blade (31) is arranged on the periphery of the feeding shaft (30); the transmission shaft (32) is rotatably supported on the frame body (1), the axis of the transmission shaft is vertical to the axis of the feeding shaft (30), one end of the transmission shaft (32) is coaxially and fixedly connected with a second bevel gear (320), and the second bevel gear (320) is meshed with the first bevel gear (300); the driven wheel (33) is coaxially and fixedly connected with one end of the transmission shaft (32) deviating from the second bevel gear (320); the driving wheel (34) is coaxially and fixedly connected with the rotating shaft (22); two ends of the chain (35) are respectively sleeved on the driving wheel (34) and the driven wheel (33).

7. A high efficiency mowing device according to claim 6, wherein: a baffle (260) is fixed above the discharge port, the baffle (260) is arranged obliquely downwards, and the first bevel gear (300) is positioned above the baffle (260).

8. A high efficiency mowing device according to claim 1, wherein: the support leg (40) comprises an inclined part (400) and a vertical part (401); the inclined part (400) inclines towards the outer side of the connecting frame (4) and the upper end of the inclined part is fixedly connected with the connecting frame (4); the vertical part (401) is positioned at the lower end of the inclined part (400) and is integrally formed with the inclined part (400), and the vertical part (401) forms an installation space outside the connecting frame (4); a bulge (50) is convexly arranged on one side surface of the roller (5), the bulge (50) is in a circular truncated cone shape, the axis of the bulge is overlapped with the axis of the roller (5), one end, close to the side surface of the roller (5), of the bulge (50) is a large end, one end, far away from the side surface of the roller (5), of the bulge is a small end, the diameter of the small end of the bulge (50) is equal to the length of the vertical part (401), and the end face of the small end of the bulge (50) is attached to the vertical part (401); a wheel shaft is coaxially and fixedly connected to the end face of the small end of the protrusion (50), penetrates through the side face of the vertical portion (401) and is in running fit with the vertical portion (401), and a limiting block (51) is arranged at one end, penetrating through the vertical portion (401), of the wheel shaft.