CN111418339A

CN111418339A - Crawler-type shrub harvester

Info

Publication number: CN111418339A
Application number: CN202010411814.XA
Authority: CN
Inventors: 刘天舒; 杨军太; 徐名汉; 董世平; 申文龙; 陈月锋; 尹玲玉; 黄允魁
Original assignee: Chinese Academy of Agricultural Mechanization Sciences
Current assignee: Chinese Academy of Agricultural Mechanization Sciences
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-07-17

Abstract

A crawler-type shrub harvester comprises a crawler-type chassis, a rack, a header, a feeding device, a chopping device, a throwing feeding cylinder and a collecting box which are sequentially arranged on the rack, and a power driving device, a driving and automatic operating system which are arranged on the rack, wherein the power driving device is respectively connected with the driving and automatic operating system, the header, the feeding device, the chopping device, the throwing feeding cylinder and the collecting box, the chopping device comprises a chopping shell, a chopping roller, a fixed cutter and a chopping transmission mechanism, the chopping roller is horizontally arranged in the chopping shell, the fixed cutter is arranged on the chopping shell corresponding to the chopping roller, the chopping roller rotates relative to the fixed cutter to chop materials, the chopping transmission mechanism is arranged on the chopping shell and connected with the chopping roller and is used for driving the chopping roller to rotate so as to chop the materials, and is thrown into the aggregate box through the throwing cylinder.

Description

Crawler-type shrub harvester

Technical Field

The invention relates to an agricultural harvesting machine, in particular to a crawler-type shrub harvester.

Background

Caragana microphylla, salix psammophila and the like are mainly concentrated in northwest regions and serve as a three-north protection forest to play a role in preventing wind and fixing sand. Most of the hybrid paper mulberry and amorpha fruticosa are planted artificially, and are distributed in northeast, central origin and south. At present, the mechanized collection degree of shrub plants is relatively laggard, most of shrub plants are manually collected by means of simple tools, crops are naturally withered or lignified seriously, and the resource waste is great. The current reasons are mainly that many shrubs are grown in special environments and are mostly on sandy lands, sloping lands and muddy lands; secondly, shrubs are trees after all, and the tree bark has toughness and high branch hardness; thirdly, many shrubs have no stumping for many years, the tree crowns are large, the branches are high and coarse, and the lignification degree is high. The characteristics cause the problems of high difficulty in mechanical harvesting of shrubs, high direct transportation cost, high toughness of chopped and processed fibers, easy winding and the like. Particularly, when shrubs are planted in pure sand, slope land with large gradient and areas with large precipitation, the wheel type harvester slips, sinks and the like, great inconvenience is brought to mechanical harvesting of shrubs, and the technical problem to be solved in the field is to be solved aiming at the current situation that proper crawler type shrub harvesters are developed.

Disclosure of Invention

The invention aims to solve the technical problems of lack of shrub crop harvesting equipment, low operation efficiency and the like in the prior art, and provides a crawler-type shrub harvester which is suitable for operation on semi-slope sandy land and muddy flat land and has good passing performance, strong bearing capacity and high harvesting efficiency.

In order to achieve the above object, the present invention provides a crawler type shrub harvester, characterized by comprising:

a tracked chassis;

the frame is arranged above the crawler-type chassis;

the material collecting box is arranged on the rack;

the header is arranged at the front end of the frame;

the feeding device is arranged on the rack, and the front end of the feeding device is connected with the header;

the shredding device is arranged on the rack and is positioned behind the feeding device;

the throwing cylinder is used for throwing and sending the chopped materials to the material collecting box, the throwing cylinder is installed on the rack and positioned behind the chopping device, and the outlet end of the throwing cylinder is arranged above the material collecting box;

the power driving device is arranged below the material collecting box and is respectively connected with the crawler-type chassis, the cutting table, the feeding device, the chopping device and the throwing barrel; and

the driving and automatic control system is arranged above the shredding device and is connected with the power driving device;

the chopping device comprises a chopping shell, a chopping drum, a fixed knife and a chopping transmission mechanism, wherein the chopping drum is horizontally arranged in the chopping shell, the fixed knife is arranged on the chopping shell corresponding to the chopping drum, the chopping drum rotates relative to the fixed knife to chop materials, and the chopping transmission mechanism is arranged on the chopping shell, connected with the chopping drum and used for driving the chopping drum to rotate to chop the materials.

The crawler-type shrub harvester is characterized in that the chopping device further comprises a reversing gear box, the reversing gear box is connected with one end of the chopping drum through the chopping transmission mechanism and used for driving the cutting table and the feeding device to reversely rotate to discharge materials when the cutting table and the feeding device are blocked by the materials.

The crawler-type shrub harvester is characterized in that the chopping drum comprises a drum body, a drum shaft, a left movable blade support, a right movable blade support and a movable blade, the drum body is mounted on the drum shaft, the drum body is divided into two mounting sections along the axial direction, the left movable blade support is arranged along the outer circumferential direction of the drum body and is uniformly arranged on one of the mounting sections, the right movable blade support is arranged along the outer circumferential direction of the drum body and is uniformly arranged on the other mounting section, the left movable blade support and the right movable blade support are arranged in a staggered and spaced mode, and each of the left movable blade support and the right movable blade support is detachably mounted on the movable blade support.

In the crawler-type shrub harvester, the mounting surface of the left blade bracket and the mounting surface of the right blade bracket are respectively inclined at an angle relative to the axis of the roller body along the length direction of the roller body; the movable knife is a flat blade and the cutting edge is an elliptic curve.

The crawler-type shrub harvester, wherein the feeding device comprises:

feeding into a shell;

a feed transition shaft mounted on the feed housing;

the first feeding roller, the second feeding roller and the third feeding roller are sequentially arranged on the feeding shell, the first feeding roller and the second feeding roller are fixed in relative positions through a rotating arm and can integrally rotate around a fixed shaft obliquely above the second feeding roller, and the third feeding roller can rotate around the feeding transition shaft through a rotating arm seat so as to simultaneously float and clamp materials according to the thickness of a material layer and continuously convey and feed the materials;

and the feeding transmission mechanism is arranged on the feeding shell and is respectively connected with the first feeding roller, the second feeding roller and the third feeding roller, so that the three feeding rollers rotate simultaneously, and the materials are sequentially and forcibly conveyed and fed to the chopping device under the simultaneous action of the three feeding rollers.

In the crawler-type shrub harvester, the feeding device and the chopping device are fixed through the rotating sleeve of the feeding transition shaft.

The crawler-type shrub harvester is characterized in that a quick hanging mechanism is arranged between the feeding device and the cutting table and used for quickly disassembling and replacing the cutting table, and a cutting table lifting oil cylinder of the cutting table drives the cutting table and the feeding device to integrally rotate around the feeding transition shaft.

The crawler-type shrub harvester is characterized in that the cutting table comprises a cutting table frame, a right longitudinal feeding roller, a disc cutter, a grain lifter, a left longitudinal feeding roller, a feeding auger and a cutting table transmission mechanism, wherein the right longitudinal feeding roller and the left longitudinal feeding roller are symmetrically positioned on the front side of the cutting table frame; the lower ends of the right longitudinal feeding roller and the left longitudinal feeding roller are respectively connected with the disc cutters, and stubble leveling cutting is realized in a disc type saw blade cutting mode; the grain lifter is arranged on the cutting table frame and positioned in front of the right longitudinal feeding roller and the left longitudinal feeding roller; the feeding auger is horizontally arranged behind the right longitudinal feeding roller and the left longitudinal feeding roller; the header transmission mechanism is respectively connected with the right longitudinal feeding roller, the left longitudinal feeding roller and the feeding auger.

The crawler-type shrub harvester is characterized in that the power driving device comprises an engine and a hydraulic pump, and the engine is connected with the cutting table, the throwing barrel, the feeding device and the chopping device through an intermediate transition shaft; the hydraulic pump is connected with the crawler-type chassis, the lifting oil cylinder of the header and the overturning oil cylinder of the material collecting box through a hydraulic system.

Foretell crawler-type bush harvester, wherein, crawler-type chassis includes the chassis and the symmetry sets up crawler-type running gear on the chassis, crawler-type running gear includes track, walking motor, drive wheel, swing wheel carrier, thrust wheel and guide wheel, walking motor and drive wheel are connected, swing wheel carrier sets up the chassis below is located between drive wheel and the guide wheel, the track cladding is in on drive wheel, swing wheel carrier, guide wheel and the thrust wheel, the thrust wheel is fixed and is supported above the chassis the track.

The invention has the technical effects that:

1. the crawler-type shrub harvester is suitable for harvesting operations of functional crops such as caragana microphylla, hybrid paper mulberry, white mulberry and the like, can finish high-efficiency harvesting and throwing of aggregate of shrub crop plants, and can realize integrated operations of working procedures such as stumping cutting, forced feeding, graded cutting, pneumatic conveying and throwing, aggregate discharging and the like in sequence;

2. the intelligent matching of the harvesting speed and the load in the operation process can be realized, and the overload blockage can be prevented; the problems that harvesting equipment is short in northern semislope sandy land and southern muddy and flat land, the mechanized operation efficiency is low, the crop skins are easy to wind and block uneven stubble in the harvesting process, and the rejuvenation is affected by the uprooting of continuous roots and the like can be effectively solved;

3. the assembled chopping roller is adopted, so that the material can be effectively prevented from being wound, and the number of the movable blades can be quickly increased and decreased according to the required material chopping length, so that the material chopping length can be regulated and controlled in a step manner; the chopping device is provided with a reversing gear box, when the blockage of the reaping material occurs, the feeding device and the cutting platform are reversed to discharge the material, and the blockage problem can be solved.

The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a shredding device according to an embodiment of the present invention;

FIG. 3 is a schematic view of a shredding roll according to an embodiment of the present invention;

FIG. 4 is a schematic view of a right blade holder according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a feeding device according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a header according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of a tracked undercarriage according to an embodiment of the present invention.

Wherein the reference numerals

1 machine frame

2 crawler-type chassis

21 running motor

22 drive wheel

23 crawler walking mechanism

24 thrust wheel

25 swinging wheel carrier

26 track

27 underframe

28 guide wheel

3 cutting table

31 header frame

32 right longitudinal feeding roller

33 left longitudinal feed roller

34 disc cutter

35 feeding screw conveyer

36 header drive mechanism

37 grain lifter

4 feeding device

41 feed casing

42 first feed roll

43 second feed roll

44 swivel arm

45 third feed roller

46 feeding transition shaft

47 rotating arm seat

48 rotating sleeve

49 feeding transmission mechanism

40 header lift cylinder

5 shredding device

51 chopping shell

52 chopping drum

521 roller shaft

522 locking sleeve

523 drum body

524 left-hand knife bracket

525 right-hand knife bracket

526 moving blade pressing plate

53 reverse gear box

54 chopping transmission mechanism

55 fixed knife

56 moving knife

57-chopping transition shaft

6 collecting box

7 engines

8 hydraulic pump

9 Hydraulic system

10 intermediate transition shaft

11 throw and send a section of thick bamboo

12 driver's cabin

13 driving and automatic control system

Detailed Description

The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:

referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the present invention. The crawler 26 type shrub harvester can finish efficient harvesting of shrub crop plants and throwing and conveying of aggregate, can realize operations of stumping and cutting, forced feeding, graded cutting, wind conveying and throwing, aggregate discharging and the like in sequence, and can meet the requirements of operations of northern semislope sand land and southern muddy flat land. The crawler-type shrub harvester comprises a crawler-type chassis 2; the frame 1 is arranged above the crawler-type chassis 2; the header 3 is arranged at the front end of the frame 1; the feeding device 4 is installed on the rack 1 and connected with the power driving device, and the front end of the feeding device 4 is connected with the cutting table 3; the shredding device 5 is installed on the rack 1 and connected with the power driving device, and the shredding device 5 is arranged between the feeding device 4 and the throwing barrel 11; the throwing cylinder 11 is arranged on the frame 1; the material collecting box 6 is arranged on the frame 1, and the outlet end of the throwing cylinder 11 is arranged above the material collecting box 6; the power driving device is arranged below the material collecting box 6 and is respectively connected with the crawler-type chassis 2, the cutting table 3 and the throwing cylinder 11; and a piloting and automatic handling system 13, set above the shredding device 5; the shredding device 5 comprises a shredding shell 51, a shredding drum 52, fixed blades 55 and a shredding transmission mechanism 54, wherein the shredding drum 52 is horizontally installed in the shredding shell 51, the fixed blades 55 are arranged on the shredding shell 51 corresponding to the shredding drum 52, the shredding drum 52 rotates relative to the fixed blades 55 to shred materials, and the shredding transmission mechanism 54 is installed on the shredding shell 51 and connected with the shredding drum 52 and used for driving the shredding drum 52 to rotate to shred the materials and throw the materials into the material collecting box 6 through the throwing barrel 11. The power driving device can comprise an engine 7 and a hydraulic system 9 which are arranged below the material collecting box 6, the engine 7 distributes power to a middle transition shaft 10 and a hydraulic pump 8, and the middle transition shaft 10 transmits the power to the chopping device 5, the feeding device 4 and the cutting table 3 to drive all parts to run into a working state; the hydraulic pump 8 transmits power to the traveling motor 21 of the crawler belt 26 traveling mechanism 23, the header lift cylinder 40, and the roll-over cylinder of the header tank 6 through the hydraulic system 9. A cab 12 is arranged above the shredding device 5, and a driving and automatic control system 13 is arranged in the cab 12.

Referring to fig. 2, fig. 2 is a schematic structural view of a shredding device 5 according to an embodiment of the present invention. The chopping device 5 of this embodiment still includes the reversing gear box 53, the reversing gear box 53 with the one end of shredding drum 52 is passed through the shredding drive mechanism 54 is connected, the reversing gear box 53 still is connected with feed arrangement 4, feed arrangement 4 with header 3 is connected, when material jam appears in header 3 and feed arrangement 4, the reversing gear box 53 drives feed arrangement 4 counter-rotation, and feed arrangement 4 drives the counter-rotation of header 3 together discharges the material. During operation, the intermediate transition shaft 10 transmits power to the chopping transmission mechanism 54 through the chopping transition shaft 57, the chopping transmission mechanism 54 drives the chopping drum 52 to rotate, the chopping drum 52 and the fixed knife 55 cut materials under the combined action, and the materials are thrown into the material collecting box 6 through the throwing drum 11 under the rotating action of the chopping drum 52; when the header 3 and the feeding device 4 are blocked, the header 3 and the feeding device 4 can rotate reversely through the reversing gear box 53 to discharge the materials.

Referring to fig. 3, fig. 3 is a schematic structural view of a shredding roller 52 according to an embodiment of the present invention. In this embodiment, the chopping drum 52 includes a drum body 523, a drum shaft 521, a left-hand blade holder 524, a right-hand blade holder 525 and a hand blade 56, the drum body 523 is mounted on the drum shaft 521, and the drum shaft 521 is fixed to the drum body 523 by a locking sleeve 522; the roller body 523 is divided into two mounting sections of a left mounting section and a right mounting section along the axial direction, the left knife support 524 is uniformly arranged on the left mounting section along the outer circumferential direction of the roller body 523, the right knife support 525 is uniformly arranged on the right mounting section along the outer circumferential direction of the roller body 523, the left knife support 524 and the right knife support 525 are arranged in a staggered and spaced manner in the two mounting sections, each of the left knife support 524 and the right knife support 525 is respectively provided with the moving knife 56, and the moving knife 56 is fixed on the left knife support 524 or the right knife support 525 through the moving knife pressing plate 526.

Referring to fig. 4, fig. 4 is a schematic view illustrating the installation of the right blade holder 525 according to an embodiment of the present invention. The mounting surface of the left blade support 524 and the mounting surface of the right blade support 525 are respectively inclined at a set angle relative to the axis of the roller body 523 along the length direction of the roller body 523, the inclination direction of the left blade support 524 is opposite to that shown in fig. 4, that is, the included angles between the mounting surface of the left blade support 524 and the mounting surface of the right blade support 525 and the axis of the roller body 523 are opposite in direction, and the sizes of the included angles are equal or different. As shown in fig. 4, the mounting surface of the left blade holder 524 is inclined to the left at an angle with the axis of the roller body 523, the mounting surface of the right blade holder 525 is inclined to the right at an angle with the axis of the roller body 523, and the lowest dotted line in the figure is the axis of the roller body 523. The moving blade 56 is a flat blade and the cutting edge thereof is an elliptic curve along the length direction of the blade. The movable knife 56 is detachably mounted on the mounting surfaces of the left-hand knife bracket 524 and the right-hand knife bracket 525. The chopping roller 52 can effectively prevent material blockage, and can meet the requirements of different chopping lengths of required materials by rapidly increasing and decreasing the number of the movable blades 56.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a feeding device 4 according to an embodiment of the present invention. The feeding device 4 comprises: a feed housing 41; a feeding transition shaft 46 mounted on the feeding shell 41, wherein the feeding device 4 and the chopping device 5 are fixed through a rotary sleeve 48 of the feeding transition shaft 46; a first feeding roller 42, a second feeding roller 43 and a third feeding roller 45 which are sequentially arranged on the feeding shell 41, wherein the relative positions of the first feeding roller 42 and the second feeding roller 43 are fixed through a rotating arm 44, and the first feeding roller 42 and the second feeding roller 43 can integrally rotate around a fixed shaft obliquely above the second feeding roller 43, and the third feeding roller 45 can rotate around the feeding transition shaft 46 through a rotating arm seat 47 so as to float and clamp materials according to the thickness of a material layer and continuously convey and feed the materials; and a feeding transmission mechanism 49 which is arranged on the feeding shell 41, is respectively connected with the first feeding roller 42, the second feeding roller 43 and the third feeding roller 45, enables the three feeding rollers to rotate simultaneously, enables the materials to be orderly and forcibly conveyed and fed to the chopping device 5 under the simultaneous action of the three feeding rollers, and can simultaneously carry out floating clamping feeding conveying according to the thickness of the material layer. The header 3 and the feeder 4 can be integrally driven by the feeder 4 to rotate around the feeding transition shaft 46 by the header lift cylinder 40. A quick hanging mechanism is further arranged between the feeding device 4 and the header 3 and used for quickly disassembling and replacing the header 3.

Referring to fig. 6, fig. 6 is a schematic structural diagram of the header 3 according to an embodiment of the present invention. The header 3 comprises a header frame 31, a right longitudinal feeding roller 32, a disc cutter 34, a grain lifter 37, a left longitudinal feeding roller 33, a feeding auger 35 and a header transmission mechanism 36, wherein the right longitudinal feeding roller 32 and the left longitudinal feeding roller 33 are symmetrically positioned on the front side of the header frame 31, the lower ends of the right longitudinal feeding roller 32 and the left longitudinal feeding roller 33 are respectively connected with the disc cutter 34, the grain lifter 37 is arranged on the header frame 31 and positioned in front of the right longitudinal feeding roller 32 and the left longitudinal feeding roller 33, the feeding auger 35 is horizontally arranged behind the right longitudinal feeding roller 32 and the left longitudinal feeding roller 33, and the header transmission mechanism 36 is respectively connected with the right longitudinal feeding roller 32, the left longitudinal feeding roller 33 and the feeding auger 35. The structure of the header 3 can adopt a structure suitable for harvesting crops such as caragana microphylla, sea buckthorn, salix psammophila and amorpha fruticosa or suitable for harvesting crops such as paper mulberry and white mulberry, and the header 3 can be replaced according to the growth forms and planting agronomic requirements of different crops. The cutting table 3 is not limited to harvesting shrub plants, and the harvesting of cotton stalks and green and yellow stored corns can be carried out by changing the structure and the configuration of the cutting table 3. The header 3 can also be provided with a header rotating speed monitor, the header rotating speed monitor is connected with the power driving device, and when instantaneous load of the header 3 is increased and rotating speed is reduced to a certain degree due to sudden increase of instantaneous materials, the advancing speed of the whole machine is automatically controlled to be reduced or stopped through the power driving device, so that material blockage caused by heavy load or uneven materials is avoided; and after the rotating speed of the header 3 is recovered to a set value, the power driving device drives the whole machine to automatically increase and recover the advancing speed to enter a conventional working state.

Referring to fig. 7, fig. 7 is a schematic structural view of a crawler-type chassis 2 according to an embodiment of the present invention. The crawler-type chassis 2 of this embodiment includes chassis 27 and the symmetry sets up track 26 running gear 23 on the chassis 27, track 26 running gear 23 includes track 26, walking motor 21, drive wheel 22, swing wheel carrier 25, thrust wheel 24 and guide wheel 28, walking motor 21 and drive wheel 22 are connected, and the multiunit sets up swing wheel carrier 25 is in the chassis 27 below and is located between drive wheel 22 and the guide wheel 28, track 26 cladding is in drive wheel 22, swing wheel carrier 25, guide wheel 28 and thrust wheel 24, the thrust wheel 24 is fixed and is supported above chassis 27 track 26. The walking motors 21 on two sides of the crawler chassis 2 drive the driving wheels 22 to rotate the crawler 26, and the whole machine moves and turns under the action of ground friction force.

During operation, the engine 7 transmits power to the middle transition shaft 10 and the hydraulic pump 8, and the hydraulic system 9 distributes the power to the traveling motor 21 of the crawler traveling mechanism 23, the header lifting cylinder 40 and the overturning cylinder of the header box 6 through the hydraulic pump 8; a traveling motor 21 of the crawler chassis 2 drives a driving wheel 22 to rotate a crawler 26, so that the whole machine moves forwards and turns under the action of ground friction force; the middle transition shaft 10 transmits power to the chopping device 5, the feeding device 4 and the cutting table 3 respectively to drive all the parts to run and enter a working state; the header 3 is to treat the crop of results from the root cutting back, after carrying the crop to the comminution device 5 with force under the clamping action of feed arrangement 4 and shredding, send to in the case 6 of gathering materials through throwing a section of thick bamboo 11 again, can observe through the display screen in driver's cabin 12, after the material is filled in case 6 of gathering materials, control its upset hydro-cylinder and make case 6 of gathering materials upwards rise the upset and reach the maximum stroke and discharge the material, after the material discharges, the upset hydro-cylinder of case 6 of gathering materials rotates downwards and resets and make case 6 of gathering materials put on frame 1 again.

The invention can complete the efficient harvesting and throwing of the shrub crop plants, can sequentially complete the working procedures of stumping cutting, forced feeding, graded cutting, wind conveying and throwing, aggregate discharging and the like, and can meet the requirements of the operations of northern semislope sand land and southern muddy flat land.

The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A crawler-type shrub harvester, comprising:

a tracked chassis;

the frame is arranged above the crawler-type chassis;

the material collecting box is arranged on the rack;

the header is arranged at the front end of the frame;

the power driving device is arranged below the material collecting box and is respectively connected with the crawler-type chassis, the cutting table, the feeding device, the chopping device, the throwing cylinder and the material collecting box; and

2. The crawler-type shrub harvester of claim 1, wherein the chopping device further comprises a reversing gear box, the reversing gear box is connected with the chopping drum and the feeding device respectively, the feeding device is connected with the header, and the reversing gear box drives the header and the feeding device to rotate reversely to discharge the materials when the header and the feeding device are blocked by the materials.

3. The crawler-type shrub harvester according to claim 1 or 2, wherein the chopping drum comprises a drum body, a drum shaft, a left moving blade support, a right moving blade support and a moving blade, the drum body is mounted on the drum shaft, the drum body is divided into two mounting sections along the axial direction, the left moving blade supports are uniformly arranged on one mounting section along the outer circumferential direction of the drum body, the right moving blade supports are uniformly arranged on the other mounting section along the outer circumferential direction of the drum body, the left moving blade support and the right moving blade support are arranged in a staggered and spaced manner, and the moving blade is detachably mounted on each of the left moving blade support and the right moving blade support.

4. The crawler-type shrub harvester of claim 3, wherein the mounting surface of the left-hand blade bracket and the mounting surface of the right-hand blade bracket are respectively inclined at an angle relative to the axis of the roller body along the length direction of the roller body; the movable knife is a flat blade and the cutting edge is an elliptic curve. .

5. The crawler-type shrub harvester of claim 1 or 2, wherein the feeding means comprises:

feeding into a shell;

a feed transition shaft mounted on the feed housing;

6. The crawler-type shrub harvester of claim 5, wherein the feeding device and the chopping device are secured by a swivel of the feeding transition shaft.

7. The crawler-type shrub harvester according to claim 5, wherein a quick-coupling mechanism is provided between the feeding device and the header for quick removal and replacement of the header, and a header lift cylinder of the header drives the header and the feeding device to integrally rotate around the feeding transition shaft.

8. The crawler-type shrub harvester according to claim 1 or 2, wherein the header comprises a header frame, a right longitudinal feeding roller, a disc cutter, a grain lifter, a left longitudinal feeding roller, a feeding auger and a header transmission mechanism, wherein the right longitudinal feeding roller and the left longitudinal feeding roller are symmetrically positioned on the front side of the header frame; the lower ends of the right longitudinal feeding roller and the left longitudinal feeding roller are respectively connected with the disc cutters, and stubble leveling cutting is realized in a disc type saw blade cutting mode; the grain lifter is arranged on the cutting table frame and positioned in front of the right longitudinal feeding roller and the left longitudinal feeding roller; the feeding auger is horizontally arranged behind the right longitudinal feeding roller and the left longitudinal feeding roller; the header transmission mechanism is respectively connected with the right longitudinal feeding roller, the left longitudinal feeding roller and the feeding auger.

9. The crawler-type shrub harvester of claim 1 or 2, wherein the power drive comprises an engine and a hydraulic pump, the engine being connected to the header, the throwing drum, the feeding device and the chopping device by an intermediate transition shaft; the hydraulic pump is connected with the crawler-type chassis, the lifting oil cylinder of the header and the overturning oil cylinder of the material collecting box through a hydraulic system.

10. The crawler-type shrub harvester according to claim 1 or 2, wherein the crawler-type chassis comprises an underframe and crawler traveling mechanisms symmetrically arranged on the underframe, the crawler traveling mechanisms comprise a crawler, a traveling motor, a driving wheel, a swinging wheel frame, a thrust wheel and a guiding wheel, the traveling motor is connected with the driving wheel, the swinging wheel frame is arranged below the underframe and between the driving wheel and the guiding wheel, the crawler is covered on the driving wheel, the swinging wheel frame, the guiding wheel and the thrust wheel, and the thrust wheel is fixed above the underframe and supports the crawler.