CN212367917U

CN212367917U - Harvester for collecting Chinese milk vetch seeds and crushing and returning straws to field

Info

Publication number: CN212367917U
Application number: CN202021724183.9U
Authority: CN
Inventors: 聂军; 廖育林; 鲁艳红; 曹卫东; 孙玉桃; 高雅洁; 朱启东; 谢雪
Original assignee: HUNAN INSTITUTE OF SOIL AND FERTILIZER
Current assignee: HUNAN INSTITUTE OF SOIL AND FERTILIZER
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-01-19
Anticipated expiration: 2030-08-18

Abstract

The utility model discloses a harvester that chinese milk vetch seed was collected and still field is smashed to straw, including fuselage, engine, operation panel, transmission system, reap subassembly, transport module, washing subassembly, threshing assembly, air-out subassembly, track subassembly and tight regulation subassembly and all set up on the fuselage. Compared with the prior art, the utility model has the advantages that the working procedures of cutting, dividing, threshing, separating, cleaning and straw crushing and returning are realized, the working efficiency is higher, the two sides of the cleaning bin are provided with the movably connected material separation plates, the air quantity can be adjusted according to the requirement, and the bin inlet rate of the astragalus sinicus seeds is ensured; further, it is provided with the tight regulation device to adapt to the work demand on different topography environment, can produce good protection effect to the track, can also make the track keep good land fertility of grabbing.

Description

Harvester for collecting Chinese milk vetch seeds and crushing and returning straws to field

Technical Field

The utility model relates to a harvester, in particular to a harvester for collecting milk vetch seeds and smashing straws to return the field.

Background

At present, China basically stays in a manual harvesting stage for harvesting milk vetch, people can think of using a rape combine harvester when the milk vetch is harvested, but the rape combine harvester is designed according to the size and the weight of rape grains, and milk vetch grains and crushed straws are discharged into the field together due to overlarge air volume and overlarge screen diameter when the milk vetch is harvested, so that the milk vetch harvesting machine is not suitable for harvesting milk vetch. In view of this, the utility model people of this application obtain the harvester that the chinese milk vetch seed was collected and still field is smashed to the straw through intensive research.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a harvester that field is smashed to chinese milk vetch seed collection and straw, it can high-efficiently realize reaping of chinese milk vetch.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the harvester for collecting the astragalus sinicus seeds and smashing and returning the straws comprises a machine body, an engine, an operating platform, a transmission system, a harvesting assembly, a conveying assembly, a cleaning assembly, a threshing assembly, an air outlet assembly, a crawler assembly and an elasticity adjusting assembly, wherein the engine, the operating platform, the transmission system, the harvesting assembly, the conveying assembly, the cleaning assembly, the threshing assembly, the air outlet assembly, the crawler assembly and the elasticity adjusting assembly are arranged on the machine body, the engine utilizes the transmission system to link the harvesting assembly, the conveying assembly, the cleaning assembly, the threshing assembly, the air outlet assembly and the crawler assembly, the harvesting assembly is arranged at the front end of the machine body, the conveying assembly comprises a conveying groove arranged above the harvesting assembly in an inclined mode, a conveying belt is arranged in the conveying groove, the threshing assembly comprises a threshing bin, a threshing roller and a double-layer vibrating screen, threshing cylinder, double-deck shale shaker and air-out subassembly are located in the threshing warehouse, the air-out subassembly is located double-deck shale shaker below, the conveyer belt is connected the threshing warehouse, it includes the washing storehouse to wash the subassembly, wash the storehouse with the threshing warehouse intercommunication, be equipped with notch board, screen cloth and trash discharge opening in the washing storehouse, the baffle of washing storehouse both sides on swing joint be equipped with the material partition board, elasticity adjusting part locates on the track subassembly.

In a further improvement, the air outlet assembly comprises an air duct, and the air duct is driven by the engine.

In a further improvement, the number of the track assemblies is two, the two track assemblies are respectively arranged on two sides of the machine body, each track assembly comprises a mounting frame and a track body, the track bodies are mounted on the mounting frame, the number of the tightness adjusting assemblies is multiple, the tightness adjusting assemblies are equally mounted on the two track assemblies, each tightness adjusting assembly comprises a first elasticity adjusting piece, a second elasticity adjusting piece, a connecting piece, a first abutting wheel and a second abutting wheel, the connecting piece is rotatably mounted on the mounting frame, the first abutting wheel is mounted at the upper end of the first elasticity adjusting piece, the first elasticity adjusting piece is vertically arranged, the lower end of the first elasticity adjusting piece is rotatably connected with the left end of the connecting piece, the second elasticity adjusting piece is vertically arranged, the upper end of the second elasticity adjusting piece is rotatably connected with the right end of the connecting piece, and the lower end of the second abutting wheel is mounted on the lower end of the second elasticity adjusting piece, the first abutting wheel and the second abutting wheel abut against the upper portion and the lower portion of the crawler body respectively.

In a further improvement, the connecting piece is arranged in a plate shape, a block shape or a rod shape, a rotating shaft which is arranged corresponding to the connecting piece is arranged on the mounting rack, and the rotating shaft penetrates through the connecting piece.

In a further improvement, the first elastic adjusting member comprises a first guide rod, a first guide tube and a first spring, a first annular step is formed on the first guide rod, a second annular step is formed on the first guide tube, the lower end of the first guide rod is inserted into the first guide tube from the upper end of the first guide tube, the first spring is sleeved on the first guide rod and the first guide tube, two ends of the first spring respectively abut against the first annular step and the second annular step, the first abutting wheel is mounted at the upper end of the first guide rod, and the lower end of the first guide tube is rotatably connected with the left end of the connecting member; the second elastic adjusting piece comprises a second guide rod, a second guide pipe and a second spring, a third annular step is formed on the second guide rod, a fourth annular step is formed on the second guide pipe, the upper end of the second guide rod is inserted into the second guide pipe through the lower end of the second guide pipe, the second spring is sleeved on the second guide rod and the second guide pipe, two ends of the second spring respectively abut against the third annular step and the fourth annular step, the lower end of the second guide rod is provided with the second abutting wheel, and the upper end of the first guide pipe is rotatably connected with the right end of the connecting piece.

In a further improvement, the first elastic adjusting piece further comprises a first connecting piece, a first connecting nut and a first connecting bolt, and the first connecting nut sequentially penetrates through the first connecting piece and the connecting piece to be matched with the first connecting nut; the second elastic adjusting piece further comprises a second connecting piece, a second connecting nut and a second connecting bolt, and the second connecting nut sequentially penetrates through the second connecting piece and the connecting piece to be matched with the second connecting nut.

In a further improvement, the first elastic adjusting assembly further comprises a first guiding device, the first guiding device comprises a first sliding groove, a first sliding block and a first connecting body, the first sliding groove is vertically fixed on the mounting frame, the first sliding block can slide along the first sliding groove, and the first connecting body is connected with the first sliding block and the first guide rod; the second elastic adjusting assembly further comprises a second guiding device, the second guiding device comprises a second sliding groove, a second sliding block and a second connecting body, the second sliding groove is vertically fixed on the mounting frame, the second sliding block can slide along the second sliding groove, and the second connecting body is connected with the second sliding block and a second guide rod.

In a further improvement, the upper end of the first sliding chute is closed, and the lower end of the second sliding chute is closed.

In a further improvement, the first guiding device further comprises a first abutting bolt, a first abutting screw hole is formed in the upper end of the first sliding chute, and the first abutting bolt is matched with the first abutting screw hole and inserted into the first sliding chute from top to bottom; the second guide device further comprises a second abutting bolt, a second abutting screw hole is formed in the lower end of the second sliding groove, and the second abutting bolt is matched with the second abutting screw hole and inserted into the second sliding groove from bottom to top.

In a further improvement, the first connecting body and the second connecting body are arranged in a plate shape, a sheet shape or a rod shape.

Compared with the prior art, the utility model provides a harvester for collecting astragalus sinicus seeds and returning the smashed straws to the field, which utilizes the working procedures of cutting, dividing the grains, threshing, separating, cleaning and returning the smashed straws to the field, has higher working efficiency, and the two sides of the cleaning bin are provided with the movably connected material separation plates, so that the air quantity can be adjusted according to the needs, thereby ensuring the bin inlet rate of the astragalus sinicus seeds; further, it is provided with the tight regulation device to adapt to the work demand on different topography environment, can produce good protection effect to the track, can also make the track keep good land fertility of grabbing.

Drawings

Fig. 1 is a schematic structural view of the harvester for astragalus sinicus seed collection and straw crushing and returning to the field.

Fig. 2 is a schematic structural view of the tightness adjusting component of the harvester for collecting milk vetch seeds and crushing straws and returning the milk vetch seeds to the field.

Fig. 3 is an enlarged schematic view of a portion a of fig. 2.

In the drawings

A fuselage-11; -an engine-12; an operation table-13; a harvesting assembly-14; a conveying assembly-15; a threshing bin-16; a detaching drum-17; a double-layer vibrating screen-18; screen-19; a material separating plate-20; a wind barrel-21; a mounting bracket-22; a track body-23; a tightness adjusting component-3; a connecting piece-4; a first butting wheel-51; a first guide bar-52; a first annular step-521; a first guide tube-53; a second annular step-531; a first spring-54; a first connecting piece-55; a first connecting bolt-56; a first chute-57; a first slider-58; a first connector-59; a first jacking bolt-60; a second jacking wheel-71; a second guide bar-72; a third annular step-721; a second guide tube-73; fourth annular step-731; a second spring-74; a second connecting piece-75; a second connecting bolt-76; a second chute-77; a second slider-78; a second connector-79; a second jacking bolt-80.

Detailed Description

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

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 1 to 3, the harvester for collecting astragalus sinicus seeds and smashing straws to return to field comprises a machine body 11, an engine 12, an operation table 13, a transmission system, a harvesting assembly 14, a conveying assembly 15, a cleaning assembly, a threshing assembly, an air outlet assembly, a crawler assembly and a tightness adjusting assembly 3, wherein the engine 12, the operation table 13, the transmission system, the harvesting assembly 14, the conveying assembly 15, the cleaning assembly, the threshing assembly, the air outlet assembly, the crawler assembly and the tightness adjusting assembly 3 are all arranged on the machine body 11, the engine 12 utilizes the transmission system to link the harvesting assembly 14, the conveying assembly 15, the cleaning assembly, the threshing assembly, the air outlet assembly and the crawler assembly, the harvesting assembly 14 is arranged at the front end of the machine body 11, the conveying assembly comprises a conveying groove arranged obliquely above the harvesting assembly 14, and a conveying belt is arranged in the conveying groove, threshing component includes threshing cylinder 16, threshing cylinder 17 and double-deck shale shaker 18, threshing cylinder 17, double-deck shale shaker 18 and air-out subassembly are located in threshing cylinder 16, the air-out subassembly is located 18 below double-deck shale shaker, the conveyer belt is connected threshing cylinder 16, it includes the washing storehouse to wash the subassembly, wash the storehouse with threshing cylinder 16 intercommunication, be equipped with notch board, screen cloth 19 and row's miscellaneous mouthful in the washing storehouse, the baffle of washing storehouse both sides on swing joint be equipped with partition plate 20, elasticity adjusting part 3 is located on the track subassembly.

The harvester for collecting the astragalus sinicus seeds and crushing and returning the straws to the field has higher working efficiency by utilizing the working procedures of cutting and dividing the milk straws, threshing and separating, cleaning and crushing and returning the straws to the field, and the two sides of the cleaning bin are provided with the partition plates 20 which are movably connected, so that the air quantity can be adjusted as required, and the bin inlet rate of the astragalus sinicus seeds is ensured; further, it is provided with the tight regulation device to adapt to the work demand on different topography environment, can produce good protection effect to the track, can also make the track keep good land fertility of grabbing.

The straw and the astragalus sinicus seeds are separated and collected respectively, and the seed discharge port and the straw discharge port are provided with collecting devices respectively to realize the respective collection of the straw and the astragalus sinicus seeds, so that the collecting devices are fully applied in the prior art.

Specifically, the air outlet assembly includes an air duct 21, and the air duct 21 is driven by the engine 12.

The two crawler assemblies are respectively arranged at two sides of the machine body 11, each crawler assembly comprises a mounting frame 22 and a crawler body 23, the crawler bodies 23 are mounted on the mounting frame 22, the plurality of tightness adjusting assemblies 3 are arranged in a plurality, the plurality of tightness adjusting assemblies 3 are equally mounted on the two crawler assemblies, each tightness adjusting assembly 3 comprises a first elasticity adjusting piece, a second elasticity adjusting piece, a connecting piece 4, a first abutting wheel 51 and a second abutting wheel 71, the connecting piece 4 is rotatably mounted on the mounting frame 22, the first abutting wheel 51 is mounted at the upper end of the first elasticity adjusting piece, the first elasticity adjusting piece is vertically arranged, the lower end of the first elasticity adjusting piece is rotatably connected with the left end of the connecting piece 4, the second elasticity adjusting piece is vertically arranged, and the upper end of the first elasticity adjusting piece is rotatably connected with the right end of the connecting piece 4, the second supporting and ejecting wheel 71 is installed at the lower end of the crawler belt, and the first supporting and ejecting wheel 51 and the second supporting and ejecting wheel 71 respectively support the upper part and the lower part of the crawler belt body 23.

For explanation, the upper portion of the track body 23 refers to a portion of the track body 23 located above each bogie wheel, and the lower portion of the track body 23 refers to a portion of the track body 23 located below each bogie wheel.

Under the structure arrangement, the first elastic adjusting piece and the second elastic adjusting piece have the tendency of elastic extension, so that the first and

second abutment wheels

51 and 71 abut against the upper and lower portions of the track body 23 respectively, when the lower portion of the track body 23 passes through a ground protrusion, such as a stone or soil pile, it is bent upward, the track is tensioned, a pressure is applied to the second elastic adjustment member, when the force reaches a certain value, the upper end of the second elastic adjustment member moves upward, thereby driving the lower end of the first elastic adjusting piece to move downwards, reducing the abutting pressure of the first abutting wheel 51 on the upper part of the crawler body 23, loosening the upper part of the crawler body 23, providing a certain loosening space for the tightening of the lower part of the crawler body 23 due to bending, and preventing the crawler body 23 from being seriously tightened in a certain range; after passing through the ground protrusion, the second elastic adjustment member moves downward, and the first elastic adjustment member moves upward, restoring the abutting force against the upper portion of the crawler body 23. In summary, during the operation mode of the tightness adjusting assembly 3, when the lower portion of the track body 23 is tightened, the tightening force of the upper portion of the track body 23 is reduced, and when the lower portion of the track body 23 is loosened, the propping force of the upper portion of the track body 23 is restored, so that the track body 23 is always in a proper tightening state, and a good adjusting effect can be achieved.

Specifically, the connecting member 4 is configured to be plate-shaped, block-shaped or rod-shaped, the mounting frame 22 is provided with a rotating shaft corresponding to the connecting member 4, and the rotating shaft penetrates through the connecting member 4.

Further, the first elastic adjusting member includes a first guide rod 52, a first guide tube 53 and a first spring 54, a first annular step 521 is formed on the first guide rod 52, a second annular step 531 is formed on the first guide tube 53, the lower end of the first guide rod 52 is inserted into the first guide tube 53 from the upper end of the first guide tube 53, the first spring 54 is sleeved on the first guide rod 52 and the first guide tube 53, two ends of the first spring respectively abut against the first annular step 521 and the second annular step 531, the first abutting wheel 51 is mounted on the upper end of the first guide rod 52, and the lower end of the first guide tube 53 is rotatably connected with the left end of the connecting member 4; the second elastic adjusting member includes a second guide rod 72, a second guide tube 73 and a second spring 74, a third annular step 721 is formed on the second guide rod 72, a fourth annular step 731 is formed on the second guide tube 73, the upper end of the second guide rod 72 is inserted into the second guide tube 73 from the lower end of the second guide tube 73, the second spring 74 is sleeved on the second guide rod 72 and the second guide tube 73, two ends of the second spring respectively abut against the third annular step 721 and the fourth annular step 731, the second abutting wheel 71 is installed at the lower end of the second guide rod 72, and the upper end of the first guide tube 53 is rotatably connected with the right end of the connecting member 4.

Under the action of the first spring 54, the first guide rod 52 and the first guide tube 53 have a tendency to move away from each other, and under the action of the second spring 74, the second guide rod 72 and the second guide tube 73 have a tendency to move away from each other, thereby functioning as an elastic support.

Specifically, the first elastic adjusting member further comprises a first connecting piece 55, a first connecting nut and a first connecting bolt 56, wherein the first connecting nut sequentially passes through the first connecting piece 55 and the connecting member 4 to be matched with the first connecting nut; the second elastic adjusting piece further comprises a second connecting piece 75, a second connecting nut and a second connecting bolt 76, wherein the second connecting nut sequentially penetrates through the second connecting piece 75 and the connecting piece 4 to be matched with the second connecting nut.

In order to avoid the deflection of the parts caused by the action of the track body 23, the first elastic adjustment assembly further comprises a first guiding device, the first guiding device comprises a first sliding groove 57, a first sliding block 58 and a first connecting body 59, the first sliding groove 57 is vertically fixed on the mounting frame 22, the first sliding block 58 can slide along the first sliding groove 57, and the first connecting body 59 connects the first sliding block 58 and the first guiding rod 52; the second elastic adjustment assembly further comprises a second guiding device, the second guiding device comprises a second sliding groove 77, a second sliding block 78 and a second connecting body 79, the second sliding groove 77 is vertically fixed on the mounting frame 22, the second sliding block 78 can slide along the second sliding groove 77, and the second connecting body 79 is connected with the second sliding block 78 and the second guiding rod 72. Due to the limitation of the first sliding chute 57 and the second sliding chute 77, the first guide rod 52, the first guide tube 53, the second guide rod 72 and the second guide tube 73 cannot tilt in the left-right direction, and only can move in the up-down direction, so that a good adjusting effect can be generated.

In order to restrict the first guide rod 52 from being drawn out of the first guide tube 53 and the second guide rod 72 from being drawn out of the second guide tube 73, the upper end of the first slide groove 57 is closed and the lower end of the second slide groove 77 is closed.

In order to adjust the abutting force of the first abutting wheel 51 and the second abutting wheel 71, the first guiding device further comprises a first abutting bolt 60, a first abutting screw hole is formed in the upper end of the first sliding groove 57, and the first abutting bolt 60 is matched with the first abutting screw hole and inserted into the first sliding groove 57 from top to bottom; the second guiding device further comprises a second abutting bolt 80, a second abutting screw hole is formed in the lower end of the second sliding groove 77, and the second abutting bolt 80 is matched with the second abutting screw hole and inserted into the second sliding groove 77 from bottom to top. By rotating the first abutting bolt 60 and the second abutting bolt 80, the extreme movement positions of the first slider 58 and the second slider 78 are controlled, so that the extreme movement positions of the first guide rod 52 and the second guide rod 72 are adjusted, and the extreme values of the abutting force of the first abutting wheel 51 and the second abutting wheel 71 are controlled.

Specifically, the first connecting body and the second connecting body are provided in a plate shape, a sheet shape, or a rod shape.

The foregoing description of the embodiments is provided to enable one of ordinary skill in the art to make and use the invention and is provided for enabling those of ordinary skill in the art to make and use the invention as provided within the appended claims. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The harvester is characterized by comprising a machine body, an engine, an operating platform, a transmission system, a harvesting component, a conveying component, a cleaning component, a threshing component, an air outlet component, a crawler component and an elasticity adjusting component, wherein the engine, the operating platform, the transmission system, the harvesting component, the conveying component, the cleaning component, the threshing component, the air outlet component, the crawler component and the elasticity adjusting component are arranged on the machine body, the engine utilizes the transmission system to link the harvesting component, the conveying component, the cleaning component, the threshing component, the air outlet component and the crawler component, the harvesting component is arranged at the front end of the machine body, the conveying component comprises a conveying groove arranged obliquely above the harvesting component, a conveying belt is arranged in the conveying groove, the threshing component comprises a threshing bin, a threshing roller and a double-layer vibrating screen, threshing cylinder, double-deck shale shaker and air-out subassembly are located in the threshing warehouse, the air-out subassembly is located double-deck shale shaker below, the conveyer belt is connected the threshing warehouse, it includes the washing storehouse to wash the subassembly, wash the storehouse with the threshing warehouse intercommunication, be equipped with notch board, screen cloth and trash discharge opening in the washing storehouse, the baffle of washing storehouse both sides on swing joint be equipped with the material partition board, elasticity adjusting part locates on the track subassembly.

2. The harvester of claim 1, wherein the air outlet assembly comprises an air duct, and the air duct is driven by the engine.

3. The harvester of claim 1, wherein two crawler assemblies are provided, each crawler assembly is disposed on each side of the harvester body and comprises a mounting frame and a crawler body, the crawler bodies are mounted on the mounting frame, a plurality of tightness adjusting assemblies are provided, the tightness adjusting assemblies are equally mounted on the two crawler assemblies, each tightness adjusting assembly comprises a first elastic adjusting member, a second elastic adjusting member, a connecting member, a first abutting wheel and a second abutting wheel, the connecting member is rotatably mounted on the mounting frame, the first abutting wheel is mounted at the upper end of the first elastic adjusting member, the first elastic adjusting member is vertically disposed, the lower end of the first elastic adjusting member is rotatably connected with the left end of the connecting member, and the second elastic adjusting member is vertically disposed, the upper end of the second supporting wheel is rotatably connected with the right end of the connecting piece, the lower end of the second supporting wheel is provided with the second supporting wheel, and the first supporting wheel and the second supporting wheel respectively support against the upper part and the lower part of the crawler body.

4. The harvester of claim 3, wherein the connecting member is in the form of a plate, a block or a rod, and the mounting frame is provided with a shaft corresponding to the connecting member, and the shaft penetrates through the connecting member.

5. The harvester of claim 3, wherein the first elastic adjustment member comprises a first guide rod, a first guide tube and a first spring, wherein a first annular step is formed on the first guide rod, a second annular step is formed on the first guide tube, the lower end of the first guide rod is inserted into the first guide tube from the upper end of the first guide tube, the first spring is sleeved on the first guide rod and the first guide tube, the two ends of the first spring respectively abut against the first annular step and the second annular step, the first abutting wheel is mounted on the upper end of the first guide rod, and the lower end of the first guide tube is rotatably connected with the left end of the connecting member; the second elastic adjusting piece comprises a second guide rod, a second guide pipe and a second spring, a third annular step is formed on the second guide rod, a fourth annular step is formed on the second guide pipe, the upper end of the second guide rod is inserted into the second guide pipe through the lower end of the second guide pipe, the second spring is sleeved on the second guide rod and the second guide pipe, two ends of the second spring respectively abut against the third annular step and the fourth annular step, the lower end of the second guide rod is provided with the second abutting wheel, and the upper end of the first guide pipe is rotatably connected with the right end of the connecting piece.

6. The harvester of claim 5, wherein the first elastic adjustment member further comprises a first connection piece, a first connection nut and a first connection bolt, and the first connection nut is engaged with the first connection nut through the first connection piece and the connection piece in sequence; the second elastic adjusting piece further comprises a second connecting piece, a second connecting nut and a second connecting bolt, and the second connecting nut sequentially penetrates through the second connecting piece and the connecting piece to be matched with the second connecting nut.

7. The harvester of claim 5 or 6, wherein the first elastic adjusting member further comprises a first guiding device, the first guiding device comprises a first sliding groove, a first sliding block and a first connecting body, the first sliding groove is vertically fixed on the mounting frame, the first sliding block can slide along the first sliding groove, and the first connecting body connects the first sliding block and the first guiding rod; the second elastic adjusting piece further comprises a second guiding device, the second guiding device comprises a second sliding groove, a second sliding block and a second connecting body, the second sliding groove is vertically fixed on the mounting frame, the second sliding block can slide along the second sliding groove, and the second connecting body is connected with the second sliding block and the second guide rod.

8. The harvester of claim 7, wherein the upper end of the first chute is closed and the lower end of the second chute is closed.

9. The harvester of claim 8, wherein the first guiding device further comprises a first supporting bolt, the upper end of the first chute is provided with a first supporting screw hole, and the first supporting bolt is matched with the first supporting screw hole and inserted into the first chute from top to bottom; the second guide device further comprises a second abutting bolt, a second abutting screw hole is formed in the lower end of the second sliding groove, and the second abutting bolt is matched with the second abutting screw hole and inserted into the second sliding groove from bottom to top.

10. The harvester of claim 7, wherein the first and second connectors are formed in a plate, sheet or rod shape.