CN113383638A

CN113383638A - Small-sized double longitudinal axial flow combine harvester

Info

Publication number: CN113383638A
Application number: CN202110660842.XA
Authority: CN
Inventors: 张波; 何松; 王乐刚; 朱现学; 秦永峰; 陈芳勇; 李建香; 何菁民; 郑月男; 刘佳; 郇新明; 郑吉宁; 周高峰; 赵业亮; 钟京蕾; 刘其林; 石立军; 程克昌; 王树建; 韩新华
Original assignee: Weichai Lovol Heavy Industry Co Ltd
Current assignee: Weichai Lovol Heavy Industry Co Ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-09-14

Abstract

The invention relates to a small-sized double longitudinal axial flow combine harvester, which comprises a thresher body and a threshing device, wherein the thresher body extends along the front-back direction, the width of the left-right direction of the upper part of the thresher body is larger than that of the left-right direction of the lower part of the thresher body, the threshing device comprises two rollers, the two rollers are rotatably arranged in the thresher body side by side, and the axes of the rollers are arranged along the front-back direction of the thresher body. The invention has the beneficial effects that: on the basis of the single longitudinal axial flow threshing system, two rollers are arranged, and a double longitudinal axial flow threshing system is adopted, so that the overall harvesting efficiency of the harvester is improved. Meanwhile, the threshing machine body is designed to be of a structure with a wide upper part and a narrow lower part, the structure is simple, the size is small, the double-longitudinal axial flow roller can be arranged on the upper part, the width of the lower part of the threshing machine body can be effectively reduced, the distance between wheels cannot be increased too much, the passing performance of a harvester road can be improved due to a small wheel pitch, the operation adaptability is strong, and the threshing machine is not limited by the row spacing of crops.

Description

Small-sized double longitudinal axial flow combine harvester

Technical Field

The invention relates to the field of agricultural machinery, in particular to a small-sized double longitudinal axial flow combine harvester.

Background

The existing threshing machine body is designed to be vertically equal in height, so that the width of the threshing machine body is increased, the wheel track of wheels on two sides of the threshing machine body is increased, the road trafficability is poor, and the threshing machine body is easily limited by the row spacing of harvested crops.

That is to say, the existing axial-flow combine harvesters are large-scale combine harvesters which are complex in structure, high in cost and large in whole machine width and basically only suitable for operation in large farm fields. For areas such as small farms, rural cooperative agencies, and large grain farmers where plots are relatively concentrated but the scales are not too large, double longitudinal products which are suitable for efficient operation and low in cost are not available, and the ever-changing market demands cannot be met.

Disclosure of Invention

The technical problem to be solved by the invention is how to make the whole axial flow harvester simple in structure, small in volume and low in cost.

The technical scheme for solving the technical problems is as follows: the utility model provides a small-size two vertical axial flow combine, includes thresher body and thresher, thresher body extends along the fore-and-aft direction, and the width of its upper portion left and right directions is greater than the width of its lower part left and right directions, thresher includes two cylinders, two the cylinder side by side rotatable install in thresher body, the axis of cylinder sets up along thresher body's fore-and-aft direction.

The invention has the beneficial effects that: on the basis of the single longitudinal axial flow threshing system, two rollers are arranged, and a double longitudinal axial flow threshing system is adopted, so that the overall harvesting efficiency of the harvester is improved. Simultaneously with the design of thresher body for narrow structure under wide, moreover, the steam generator is simple in structure, small, can enough install two vertical axial flow drum on upper portion, can also effectually reduce the width of thresher body lower part (under the prerequisite of guaranteeing to go and the operation, the width can be compared with the thresher body of current single cylinder and increase a bit in order to be applicable to the sieve case below the double-drum structure, or the width also can keep unchangeable or reduce slightly), make the distance between the wheel can not increase too much, less wheel base can improve the trafficability characteristic of harvester road, operation strong adaptability, do not limited by the row spacing of crop.

On the basis of the technical scheme, the invention can be further improved as follows.

Further, the threshing machine body comprises a frame main body, a front panel arranged at the front end of the frame main body, a rear panel arranged at the rear end of the frame main body and two side panels respectively arranged at two sides of the frame main body; the both sides of frame main part respectively fixed mounting have a plurality of front and back interval to set up the stand, the upper end of stand with back timber fixed connection of frame main part both sides upper end, the lower extreme with the floorbar fixed connection of frame main part both sides lower extreme, width between the back timber of frame main part both sides upper end is greater than width between the floorbar of frame main part both sides lower extreme, the lower part of stand sets up for its upper portion inside slope, the curb plate with correspond the side the stand is connected, and its lower part also sets up for its upper portion leanin, the cylinder is located in the frame main part.

The beneficial effect of adopting the further scheme is that: the threshing machine body can be made of a frame structure and an additional external plate, the frame main body is fixedly assembled into a whole by beams (integrally formed, welded or fixedly assembled and connected and the like), the threshing machine body is firm in structure and can bear other parts, the threshing machine body can be used as a frame and a chassis of a harvester, and other parts are installed on the frame main body, so that the size of the whole machine can be effectively reduced, and the assembly difficulty is reduced. Of course, the threshing body having another structure may be any one as long as it has a wide top and a narrow bottom.

The upright posts on the two sides can increase the strength of the frame main body and facilitate the installation of the side plates, and the special shape that the lower part is bent inwards and inclined can ensure that the frame main body and even the whole threshing machine body realize a structure with a wide upper part and a narrow lower part.

Furthermore, the threshing device also comprises a drum cover and a concave sieve, the concave sieve is arranged in the threshing machine body, the drum cover is fixed above the concave sieve, two drums are arranged in a threshing cavity surrounded by the drum cover and the concave sieve in a side-by-side rotatable mode, the front end of the threshing device is provided with a threshing feed inlet, and the rear end of the threshing device is provided with a threshing grass discharge port.

The beneficial effect of adopting the further scheme is that: after the materials enter the threshing cavity, the threshing is realized under the combined action of the roller cover, the roller and the concave sieve, the seeds fall through the concave sieve, and the straws are discharged from the threshing straw outlet backwards.

Further, the roller cover comprises two roller cover bodies and a roller sundry blanking assembly, the two roller cover bodies are arranged side by side, the roller sundry blanking assembly comprises a roller sundry shell and a roller sundry distributor, the roller sundry shell is detachably connected and communicated with the two roller cover bodies respectively, and the roller sundry distributor is fixed in the roller sundry shell and is arranged between the two roller cover bodies.

The beneficial effect of adopting the further scheme is that: the setting of current miscellaneous blanking mouth is in the more position of material, and the risk that the cylinder blockked up is big, and the material that miscellaneous surplus got into two cylinders is uneven, easily leads to one of them cylinder load great. The miscellaneous surplus blanking subassembly of the miscellaneous seed grain that contains that this scheme will carry out secondary threshing sends into thresher through the miscellaneous surplus blanking subassembly of cylinder in, the miscellaneous tripper of cylinder will send into seed grain as far as even distribute two cylinder cover bodies for the material in two cylinders is average, and thresher work is steady smooth and easy, avoids blockking up or because of the vibration that the material is uneven and cause.

Furthermore, the concave plate sieve comprises two groups of concave plate units, each group of concave plate units comprises a threshing fixed concave plate and a threshing movable concave plate, and one side edge of the threshing movable concave plate is rotatably connected with one side edge of the threshing fixed concave plate and is positioned;

each roller comprises a threshing section, and the concave plate unit is arranged on the lower side of the threshing section of each roller; the threshing movable concave plates of the two concave plate units are respectively positioned at the opposite outer sides of the two rollers, and the rotating directions are opposite;

each group of concave plate units also comprises a separation fixed concave plate and a grass discharge fixed concave plate; each roller also comprises a separation section and a grass discharge section; the separation fixing concave plate and the grass discharging fixing concave plate are fixedly arranged on the lower sides of the separation section and the grass discharging section respectively.

The beneficial effect of adopting the further scheme is that: the existing concave sieve is a whole, the gap between the concave sieve and the roller is fixed, if the gap between one section of concave sieve and the roller needs to be adjusted, the position of the whole concave sieve needs to be adjusted, and the whole harvester needs to be disassembled, so that the adjustment process is complex and lack of pertinence, and the efficiency of threshing operation is reduced. After the scheme is adopted, the two threshing movable concave plates are respectively positioned at two sides of the two rollers, and the rotating directions are opposite; the threshing movable concave plates corresponding to the two rollers can be independently adjusted, and each threshing movable concave plate can adapt to the crop flow in the corresponding roller. And each section of concave plate can be independently disassembled.

Further, still include gap bridge and feeding arc board, the gap bridge connect in the front end of thresher body and with thresher body intercommunication, concave screen front end is connected with the feeding arc board, the gap bridge feeding arc board with thresher links up in proper order, the feeding arc board have two respectively to two the cambered surface of cylinder water conservancy diversion.

The beneficial effect of adopting the further scheme is that: the front part of the threshing device in the prior art is provided with a transverse axial flow roller for feeding crops, so that the volume and the weight of the whole harvester are increased, and the threshing device is complex in structure and difficult to install; however, simply omitting the transverse axial flow roller for feeding leads to the problem that the crop feeding cannot be smoothly carried out, thus reducing the threshing efficiency and the threshing quality and even improving the failure rate of the harvester. After this scheme of adoption, realize the feeding direction through simple structure's feeding arc board, the cambered surface threshes the even difference water conservancy diversion of material to two cylinders, has improved the efficiency and the quality of threshing operation. The whole machine has simple and compact structure, light weight and convenient maintenance.

Further, still include gap bridge transmission assembly and header lift cylinder, gap bridge transmission assembly locates the lateral wall of gap bridge, header lift cylinder is located gap bridge transmission assembly's the outside, and both ends respectively with the gap bridge with threshing machine body is articulated.

The beneficial effect of adopting the further scheme is that: in order to increase the feeding amount, the width of a gap bridge can be increased, the gap bridge is widened to cause that the distance between the two sides of the gap bridge and the inner side of a tire is short, the existing header lifting oil cylinder is arranged on the inner side of a gap bridge transmission assembly, namely, the header lifting oil cylinder is arranged close to the side wall of the gap bridge, and the gap bridge transmission assembly is easily interfered with the tire due to the existence of a chain transmission structure. This scheme changes header lift cylinder to the outside of passing a bridge transmission assembly, and the transmission assembly of passing a bridge can to the inboard transmission to save the holistic width of passing a bridge, avoid interfering with the tire.

The threshing device is characterized by further comprising a cleaning device and a cleaning fan, machine body partition plates extending in the front-back direction are respectively arranged in the middle of the upper end of the frame main body, middle partition plates extending in the front-back direction are respectively arranged in the middle of the lower end of the frame main body, and the threshing device is fixed on the machine body partition plates; the cleaning device is provided with two cleaning chambers which are arranged side by side at the left and right and are independent to each other, a vibrating screen is independently arranged in each cleaning chamber, and the two vibrating screens are independently adjustable; the cleaning fans are two and respectively blow air to the corresponding two vibrating screens.

The beneficial effect of adopting the further scheme is that: corresponding to the structure of the double-roller, the upper end of the frame main body is provided with a machine body clapboard which separates the two rollers to separate the left part and the right part of the threshing device, the falling space below the left roller and the right roller is not provided with a clapboard to separate the separated grains, and the grains naturally fall into the left cleaning chamber and the right cleaning chamber after falling on the middle clapboard at the lower end and are cleaned respectively.

The threshing device comprises a threshing body, a first intermediate transmission shaft, a shredding and straw discharging device and a chopper intermediate wheel, wherein the engine is positioned above the threshing body and is in transmission connection with one end of the first intermediate transmission shaft; the threshing machine is characterized by further comprising a roller transmission box and a second middle transmission shaft, wherein the roller transmission box is located on the front side of the threshing machine body, the second middle transmission shaft is located below the first middle transmission shaft, and the first middle transmission shaft is in transmission connection with the roller transmission box and the second middle transmission shaft respectively.

The beneficial effect of adopting the further scheme is that: because the threshing machine body is wide at the top and narrow at the bottom, the height difference of the transmission surface is larger, and the transmission of the height difference of the transmission surface is realized by adopting a second middle transmission shaft. The transmission surface of the straw chopping and discharging device is influenced by the components of the whole thresher and cannot be transmitted outside the threshing machine body, for example, after the side edge of the threshing machine body is provided with a seed lifting conveyor and other structures, the outer side of the threshing machine body does not have more spaces for transmission, the engine is arranged on the threshing machine body in the scheme, and the transmission structure of the straw chopping and discharging device is arranged above the threshing machine body, so that the components are ensured to be close to the middle part of the threshing machine body as far as possible, the width of the whole machine is reduced, and the space on the side surface of the threshing machine body is saved.

Further, the chopping and grass discharging device comprises a chopping and grass discharging shell and a chopping and grass discharging working part, the chopping and grass discharging working part is detachably arranged in the chopping and grass discharging shell and can rotate, and the chopping and grass discharging working part is a grass discharging roller component or a chopping roller; the grass discharging roller assembly comprises a grass discharging roller and grass discharging blades, at least one side of each grass discharging blade is fixedly connected with the grass discharging roller, the grass discharging blades are arranged along the axial direction of the grass discharging roller, and one side or the middle of each grass discharging blade extends in the direction far away from the grass discharging roller and is provided with an arc-shaped bulge.

The beneficial effect of adopting the further scheme is that: for a small-sized harvester, due to insufficient space, the additional arrangement of the grass discharging device can influence other main machine working components to be detachable due to the grass discharging roller assembly. The grass can be arranged to the installation grass discharging roller subassembly according to the selection of operation condition in the shell of row's of the bits of broken glass row of this scheme, still install the cutter roller and cut up the straw, need not to increase new device for harvester overall structure is more compact, when realizing row's grass function, can not influence other part work. One side or the middle part of the grass discharge blade is provided with an arc-shaped bulge for stirring straws, so that grass discharge is realized, the surface is smooth, and grass is not easy to hang on the grass discharge blade.

Drawings

FIG. 1 is a side view of a small dual longitudinal axial flow combine harvester of the present invention;

fig. 2 is a front view of a small-sized dual longitudinal axial flow combine harvester of the present invention;

fig. 3 is a side view of the thresher body and gap bridge according to the present invention;

fig. 4 is a front view of a prior art thresher body;

fig. 5 is a front view of a thresher body according to the present invention;

FIG. 6 is a front view of a belt portion of the drive wheel of the thresher body in accordance with the present invention;

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a schematic structural view of the thresher body of the present invention without side plates and with front driving wheels and rear steering wheels;

FIG. 10 is a front view of FIG. 9, where m represents the width of the lower portion of the thresher body, n represents the track, and c represents the spacing of the front drive wheels from the thresher body;

FIG. 11 is a side view of FIG. 9 with the broken lines showing the extreme positions of upward flotation of the rear steerable wheels;

FIG. 12 is a top plan view of FIG. 9 with dashed lines indicating respective extreme positions of rotation of the two rear steerable wheels;

FIG. 13 is a partial three-dimensional view of a drum cover according to the present invention;

FIG. 14 is an internal structural view of a drum cover according to the present invention;

FIG. 15 is a bottom view of the drum cover according to the present invention;

FIG. 16 is a schematic view of the construction of two drums according to the present invention;

FIG. 17 is a schematic view of the feed arc plate of the present invention;

FIG. 18 is a schematic structural view of a three-stage split feeding arc plate of the present invention;

FIG. 19 is a schematic structural view of a recess screen of the present invention;

FIG. 20 is a schematic structural view of the notch plate screen draw bar mechanism of the present invention;

FIG. 21 is a partial schematic view of M of FIG. 20;

FIG. 22 is a side view of the concave screen and drum installation of the present invention;

FIG. 23 is a front view of the recessed plate screen of the present invention mounted with two drums;

FIG. 24 is a schematic structural view of a single screen box of the cleaning plant of the present invention;

FIG. 25 is a schematic view showing an assembly of the cleaning apparatus and the thresher body according to the present invention, in which the vibrating screen is hidden to see the internal structure;

FIG. 26 is a schematic structural view of a double screen box of the cleaning plant of the present invention;

FIG. 27 is a top view of FIG. 26;

FIG. 28 is a front view of FIG. 26;

FIG. 29 is a block diagram of the chopping weed extractor of the present invention;

fig. 30 is a partial enlarged view N of fig. 29;

FIG. 31 is a three-dimensional view of the chopping weed extractor of the present invention;

FIG. 32 is an exploded view of the shredding and weed-discharging device of the present invention;

FIG. 33 is a cross-sectional view of one of the grass blades of the chopping grass discharge apparatus of the present invention;

FIG. 34 is a three-dimensional block diagram of the transmission system of the present invention;

FIG. 35 is a three-dimensional drive configuration diagram of the drive system of the present invention;

FIG. 36 is a drive circuit diagram of the drive system of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. a header;

2. bridging; 201. a header lift cylinder;

3. a drum cover; 301. a roller cover body; 302. a drum trash shell; 303. a roller sundry distributor; 304. a grass guiding plate;

4. a drum; 401. feeding a cone; 402. a drum shaft; 403. fixing the breadth disc; 404. a rod toothing; 4041. a bar and tooth attachment; 405. a connecting disc;

5. a concave plate sieve; 51. threshing and fixing the concave plate; 52. a movable threshing concave plate; 53. a pull rod mechanism; 531. rotating the connecting piece; 532. a handle; 533. a handle fixing seat; 534. a rotating shaft; 535. a connecting pin; 536. an L-shaped connecting plate; 54. separating the fixed concave plate; 55. grass discharging and fixing concave plates;

6. a grass cutting and discharging device; 601. cutting the grass discharging shaft; 602. a grass discharging roller; 603. grass discharging blades; 604. a grass discharge plate mounting seat; 605. cutting the shell of the grass discharge;

7. a cleaning device; 701. a screen box; 702. a cleaning chamber; 703. vibrating screen; 704. a screen box baffle; 705. a cleaning transmission mechanism;

8. a cleaning fan; 9. a miscellaneous elevator;

10. a thresher body; 101. a frame body; 102. a front panel; 103. a rear panel; 104. a column; 105. mounting a plate; 106. a drum support; 107. front drive welding; 108. a rear steering bracket; 109. avoiding a space; 110. a machine body clapboard;

11. a kernel elevator; 12. a grain bin; 13. unloading the grain cylinder;

14. feeding an arc plate; 141. a cambered surface; 142. connecting the flat plates;

15. an engine; 16. a first intermediate drive shaft; 17. a chopper intermediate wheel; 18. a roller transmission case; 19. a second intermediate drive shaft; 20. a gap bridge driving shaft; 21. a header intermediate shaft; 22. cleaning a transmission shaft; 23. a first sieve box input wheel; 24. a second sieve box input wheel; 25. a grain unloading driving wheel; 26. a seed lifting transmission wheel; 27. a miscellaneous elevator transmission wheel; 28. a gearbox.

Detailed Description

The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention. Unless otherwise specified, 'front', 'rear', 'left' and 'right' in the present invention indicate front, rear, left and right in the working state of the harvester.

Example 1

As shown in fig. 1, the embodiment provides a small-size two vertical axial flow combine, including threshing body 10 and thresher, threshing body 10 extends along the fore-and-aft direction, and the width of its upper portion left and right sides direction is greater than the width of its lower part left and right sides direction, thresher includes two cylinders 4, two cylinder 4 rotatable install side by side in threshing body 10, the axis of cylinder 4 sets up along threshing body 10's fore-and-aft direction.

On the basis of the single longitudinal axial flow threshing system, two rollers 4 are arranged, and a double longitudinal axial flow threshing system is adopted, so that the overall harvesting efficiency of the harvester is improved. Meanwhile, the threshing machine body 10 is designed to be of a structure with a wide upper part and a narrow lower part, the structure is simple, the size is small, the double longitudinal axial flow rollers can be installed on the upper part, the width of the lower part of the threshing machine body can be effectively reduced (on the premise of ensuring running and operation, the width can be increased a little compared with the threshing machine body of the existing single roller so as to be suitable for a sieve box below the double-roller structure, or the width can be kept unchanged or slightly reduced), the distance between wheels can not be increased too much, the smaller wheel pitch can improve the trafficability of a harvester road, the operation adaptability is strong, and the threshing machine is not limited by the row pitch of crops.

On the basis of the above scheme, the threshing machine body 10 includes a frame main body 101, a front panel 102 installed at the front end of the frame main body 101, a rear panel 103 installed at the rear end of the frame main body 101, and two side panels installed at two sides of the frame main body 101, respectively; the both sides of frame main part 101 are fixed mounting respectively has a plurality of front and back interval to set up stand 104, the upper end of stand 104 with frame main part 101 both sides upper end top beam fixed connection, the lower extreme with the floorbar fixed connection of frame main part 101 both sides lower extreme, the width between the top beam of frame main part 101 both sides upper end is greater than the width between the floorbar of frame main part 101 both sides lower extreme, the lower part of stand 104 sets up for its upper portion inboard slope, the curb plate with correspond the side stand 104 is connected, and its lower part also sets up for its upper portion inboard slope, cylinder 4 is located in the frame main part 101.

Threshing machine body 10 can be made by adding external panel by frame construction, frame main part 101 is fixed by each roof beam and assembles an organic whole (integrated into one piece, welding or fixed assembly connect etc.), and sound construction can bear other each part, and threshing machine body 10 can regard as the frame and the chassis of harvester, installs other each part toward frame main part 101, can the effectual volume that reduces the complete machine, reduces the assembly degree of difficulty. Of course, the threshing machine body 10 having another configuration may be any configuration as long as it is wide in the upper part and narrow in the lower part. The upright posts 104 on both sides can increase the strength of the frame body 101 and facilitate the installation of the side plates, and the frame body 101 and the whole thresher body 10 can have a structure with a wide top and a narrow bottom due to the special shape that the lower part is bent and inclined inwards.

On the basis of any one of the above schemes, the threshing device further comprises a drum cover 3 and a concave sieve 5, the concave sieve 5 is installed in the threshing machine body 10, the drum cover 3 is fixed above the concave sieve 5, two drums 4 are rotatably installed in a threshing cavity surrounded by the drum cover 3 and the concave sieve 5 side by side, the front end of the threshing device is provided with a threshing feed inlet, and the rear end of the threshing device is provided with a threshing grass discharge port.

After the materials enter the threshing cavity, the threshing is realized under the combined action of the roller cover 3, the roller 4 and the concave plate sieve 5, the seeds fall through the concave plate sieve 5, and the straws are discharged from the threshing straw outlet backwards.

On the basis of any scheme, the roller cover 3 comprises two roller cover bodies 301 and a roller impurity blanking assembly, the two roller cover bodies 301 are arranged side by side, the roller impurity blanking assembly comprises a roller impurity shell 302 and a roller impurity distributor 303, the roller impurity shell 302 is detachably connected and communicated with the two roller cover bodies 301, and the roller impurity distributor 303 is fixed in the roller impurity shell 302 and between the two roller cover bodies 301.

The setting of current miscellaneous blanking mouth is in the more position of material, and the risk that cylinder 4 blockked up is big, and the material that miscellaneous surplus got into two cylinders 4 is uneven, easily leads to one of them cylinder 4 load great. The miscellaneous surplus blanking subassembly of the miscellaneous seed grain that contains that this scheme will carry out secondary threshing sends into thresher through the miscellaneous surplus of cylinder in, the miscellaneous tripper 303 of cylinder distributes the seed grain of sending into as far as is average to two cylinder cover bodies 301 for the material in two cylinders 4 is average, and thresher work is steady smooth and easy, avoids blockking up or because of the vibration that the material is uneven and cause.

On the basis of any scheme, the concave sieve 5 comprises two groups of concave units, each group of concave units comprises a threshing fixed concave 51 and a threshing movable concave 52, and one side edge of the threshing movable concave 52 is rotatably connected with and positioned on one side edge of the threshing fixed concave 51;

each roller 4 comprises a threshing section, and the concave plate unit is arranged on the lower side of the threshing section of each roller 4; the threshing movable concave 52 of the two concave units are respectively positioned at the opposite outer sides of the two rollers 4 and have opposite rotating directions;

each group of the concave plate units also comprises a separation fixing concave plate 54 and a grass discharge fixing concave plate 55; each of said drums 4 further comprises a separating section and a weed-discharging section; the separation fixing concave plate 54 and the grass discharge fixing concave plate 55 are fixedly installed at the lower sides of the separation section and the grass discharge section, respectively.

The two threshing movable concave plates 52 are respectively positioned at two sides of the two rollers 4 and have opposite rotating directions; the threshing movable concave plates 52 corresponding to the two rollers 4 can be independently adjusted, and each threshing movable concave plate 52 can adapt to the crop flow in the corresponding roller. And each section of concave plate can be independently disassembled.

On the basis of any scheme, still include gap bridge 2 and feeding arc board 14, gap bridge 2 connect in the front end of thresher body 10 and with thresher body 10 intercommunication, concave plate sieve 5 front end is connected with feeding arc board 14, gap bridge 2 feeding arc board 14 with thresher links up in proper order, feeding arc board 14 have two respectively to two cambered surface 141 of cylinder 4 water conservancy diversion.

The feeding guide is realized through the feeding arc plate 14 with simple structure, the arc surface 141 uniformly guides the materials to the space between the two rollers 4 and the concave plate sieve 5 for threshing respectively, and the efficiency of threshing operation and the threshing quality are improved. The whole machine has simple and compact structure, light weight and convenient maintenance.

On the basis of any one of the above schemes, as shown in fig. 34, the threshing device further comprises a gap bridge transmission assembly and a header lift cylinder 201, wherein the gap bridge transmission assembly is arranged on the side wall of the gap bridge 2, the header lift cylinder 201 is positioned on the outer side of the gap bridge transmission assembly, and two ends of the header lift cylinder are respectively hinged to the gap bridge 2 and the threshing machine body 10.

Change header lift cylinder 201 into the outside of gap bridge transmission assembly, gap bridge transmission assembly can be to the inboard transmission, also is to the position transmission that is close to 2 lateral walls of gap bridge, avoids gap bridge transmission assembly to keep away from gap bridge 2 to save the holistic width of gap bridge, avoid interfering with the tire.

On the basis of any scheme, the threshing device further comprises a cleaning device 7 and a cleaning fan 8, a machine body partition plate 110 extending along the front-back direction is arranged in the middle of the upper end of the frame main body 101, a middle partition plate extending along the front-back direction is arranged in the middle of the lower end of the frame main body 101, and the threshing device is fixed on the machine body partition plate 110; the cleaning device 7 is provided with two cleaning rooms 702 which are arranged side by side at the left and right and are independent from each other, a vibrating screen 703 is independently arranged in each cleaning room 702, and the two vibrating screens 703 are independently adjustable; the cleaning fans 8 are two and respectively blow air to the corresponding two vibrating screens 703.

Specifically, the junction of the two groups of concave units of the concave screen 5 is fixed on the machine body partition plate 110.

Further, preferably, two clean the coaxial fixed connection of fan 8's pivot, and two clean fan 8's shell fixed connection and intercommunication.

On the basis of any scheme, the threshing device further comprises an engine 15, a chopping and grass discharging device 6, a first intermediate transmission shaft 16 and a chopper intermediate wheel 17, wherein the engine 15 is located above the threshing machine body 10 and is in transmission connection with one end of the first intermediate transmission shaft 16, the first intermediate transmission shaft 16 is located above the threshing machine body 10, the chopping and grass discharging device 6 is located at the rear part of the threshing machine body 10, the chopper intermediate wheel 17 is located above the chopping and grass discharging device 6, the other end of the first intermediate transmission shaft 16 is in transmission connection with the chopper intermediate wheel 17, and the chopper intermediate wheel 17 is in transmission connection with the chopping and grass discharging device 6; the threshing machine further comprises a roller transmission box 18 and a second intermediate transmission shaft 19, the roller transmission box 18 is located on the front side of the threshing machine body 10, the second intermediate transmission shaft 19 is located below the first intermediate transmission shaft 16, and the first intermediate transmission shaft 16 is in transmission connection with the roller transmission box 18 and the second intermediate transmission shaft 19 respectively.

Specifically, as shown in fig. 3, the chopping and grass discharging device 6 is located at the rear part of the threshing machine body 10, and the chopping and grass discharging device 6 is communicated with a threshing and grass discharging port at the rear end of the threshing device. The chopping and grass discharging device 6 can be positioned right behind or below the threshing and grass discharging port.

Further, it is preferable that the gear box 28 of the harvester is disposed at the front lower part of the threshing machine body 10, so as to avoid occupying the top or side space of the threshing machine body 10, and make the whole structure more compact.

Because the threshing machine body 10 is wide at the top and narrow at the bottom, and the height difference of the transmission surface is larger, the transmission of the height difference of the transmission surface is realized by adopting the second middle transmission shaft 19. The transmission surface of the straw chopping and discharging device is affected by the components of the whole threshing machine and cannot be transmitted outside the threshing machine body 10, for example, after the side of the threshing machine body 10 is provided with a seed lifting conveyor 11 and other structures, the outside of the threshing machine body 10 has no more space for transmission, the engine 15 is arranged above the threshing machine body 10 according to the scheme, and the transmission structure of the straw chopping and discharging device 6 is arranged above the threshing machine body 10, so that the components are close to the middle part of the threshing machine body 10 as far as possible, the width of the whole threshing machine is reduced, and the space on the side surface of the threshing machine body 10 is saved.

On the basis of any one of the above schemes, the chopping and grass discharging device 6 comprises a chopping and grass discharging shell 605 and a chopping and grass discharging working member, wherein the chopping and grass discharging working member is detachably arranged in the chopping and grass discharging shell 605 and can rotate, and the chopping and grass discharging working member is a grass discharging roller assembly or a chopping roller; the grass discharging roller assembly comprises a grass discharging roller 602 and grass discharging blades 603, at least one side of each grass discharging blade 603 is fixedly connected with the grass discharging roller 602, the grass discharging blades 603 are arranged along the axial direction of the grass discharging roller 602, and one side or the middle of each grass discharging blade 603 extends in the direction far away from the grass discharging roller 602 and is provided with an arc-shaped bulge.

The grass discharging roller assembly can be installed to discharge grass in the chopping and grass discharging shell 605 or the chopping roller is installed to chop the straws according to the operation condition, a new device is not needed to be added, the whole structure of the harvester is more compact, and the work of other parts can not be influenced when the grass discharging function is realized. One side or the middle part of the grass discharge blade is provided with an arc-shaped bulge for stirring straws, so that grass discharge is realized, the surface is smooth, and grass is not easy to hang on the grass discharge blade.

The invention relates to a small-sized double longitudinal axial flow combine harvester, which comprises a header 1, a gap bridge 2, a roller cover 3, a roller 4, a concave sieve 5, a chopping and grass discharging device 6, a cleaning device 7, a cleaning fan 8, a sundry residue elevator 9, a threshing machine body 10, a seed elevator 11, a grain tank 12 and a grain unloading barrel 13.

The working process is as follows: the header 1 is arranged at the front part of the threshing machine body 10 and is communicated with a threshing device in the threshing machine body 10 through a gap bridge 2, and the harvested crops are fed into the threshing device. Threshing device includes cylinder lid 3, cylinder 4 and concave sieve 5, and cylinder lid 3 is fixed in the top of concave sieve 5, and cylinder 4 is two, and two cylinders 4 are rotatable installing in the threshing cavity that cylinder lid 3 and concave sieve 5 enclose side by side, and cylinder 4's axis sets up along the orientation by preceding to back of harvester, and the crop is threshed in threshing cavity realization.

The rear end of the threshing device is communicated with the chopping and straw discharging device 6, and the threshed straws are discharged from the rear end of the threshing device and chopped or pushed backwards by the chopping and straw discharging device 6; the threshed grains fall to a cleaning device 7 below through a concave plate sieve 5.

The vibrating screen in the cleaning device 7 further cleans the grains, the cleaning fan 8 supplies air to the vibrating screen, the sundries and the grains are separated under the action of the vibrating screen and the cleaning fan 8, and the sundries are discharged from the rear end of the cleaning device 7 under the blowing of the cleaning fan 8; the seeds still containing impurities fall into an impurity elevator 9 from the rear part of the cleaning device 7, and the impurity elevator 9 sends the part of seeds back to the threshing device from the roller cover 3 for secondary threshing; after being screened by the cleaning device 7, clean grains are lifted to a grain tank 12 from the front end of the cleaning device 7 through a grain elevator 11, and the grain tank 12 can discharge grains through a grain discharging barrel 13 after being filled with the grains.

Example 2

On the basis of embodiment 1, this embodiment is one specific embodiment of the threshing body 10.

As shown in fig. 4, the conventional threshing machine body 10 is designed to be vertically equal in height, and if two drums 4 are to be installed, the width of the conventional threshing machine body 10 must be increased, so that wheels on both sides of the threshing machine body 10 are also far away from each other, the track is increased, the passage of the path is deteriorated, and the threshing machine body is easily restricted by the row spacing of the harvested crops.

As shown in fig. 5 to 12, the threshing machine body 10 extends in the front-rear direction, and the width in the left-right direction of the upper portion thereof is larger than the width in the left-right direction of the lower portion thereof. The invention designs the threshing machine body 10 into a structure with a wide upper part and a narrow lower part, has simple structure and small volume, can install the double longitudinal axial flow roller 4 or a single large roller 4 at the upper part, and can effectively reduce the width of the lower part of the threshing machine body 10 (on the premise of ensuring running and operation, the width can be increased by a little compared with the threshing machine body 10 of the existing single roller 4 so as to be suitable for a sieve box under the structure of the double roller 4, or the width can be kept unchanged or slightly reduced), so that the distance between wheels can not be increased too much, the smaller wheel pitch can improve the road trafficability of the harvester, the operation adaptability is strong, and the harvester is not limited by the row pitch of crops.

Under the condition that the threshing machine body 10 with a wide upper part and a narrow lower part is as wide as a cleaning room as possible, a smaller space between the threshing machine body 10 and the front driving wheels can be realized, so that a smaller wheel track of the wide cleaning room is realized, and the whole machine can also realize better trafficability. The space left by the lower part and the upper part of the thresher body 10 relatively narrow can be provided with some original transmission parts, so that the whole machine has more compact structure and smaller volume.

On the basis of the above technical solution, the threshing machine body 10 includes a frame main body 101, a front panel 102 installed at the front end of the frame main body 101, a rear panel 103 installed at the rear end of the frame main body 101, and two side panels installed at both sides of the frame main body 101, respectively. Threshing machine body 10 can be made by adding external panel by frame construction, frame main part 101 is fixed by each roof beam and assembles an organic whole (integrated into one piece, welding or fixed assembly connect etc.), and sound construction can bear other each part, and threshing machine body 10 can regard as the frame and the chassis of harvester, installs other each part toward frame main part 101, can the effectual volume that reduces the complete machine, reduces the assembly degree of difficulty. Of course, the threshing machine body 10 having another configuration may be any configuration as long as it is wide in the upper part and narrow in the lower part.

On this basis, preferably, a plurality of upright columns 104 are fixedly installed on two sides of the frame main body 101 respectively, and are arranged at intervals front and back, the upper ends of the upright columns 104 are fixedly connected with top beams at the upper ends of the two sides of the frame main body 101, the lower ends of the upright columns are fixedly connected with bottom beams at the lower ends of the two sides of the frame main body 101, the width between the top beams at the upper ends of the two sides of the frame main body 101 is larger than the width between the bottom beams at the lower ends of the two sides of the frame main body 101, the lower parts of the upright columns 104 are arranged in an inward inclined manner relative to the upper parts of the upright columns, the side plates are connected with the upright columns 104 on the corresponding sides, and the lower parts of the side plates are also arranged in an inward inclined manner relative to the upper parts of the upright columns. The upright posts 104 on both sides can increase the strength of the frame body 101 and facilitate the installation of the side plates, and the frame body 101 and the whole thresher body 10 can have a structure with a wide top and a narrow bottom due to the special shape that the lower part is bent and inclined inwards.

Further, the side plate includes a plurality of mounting plates 105, and the mounting plates 105 are detachably connected between the adjacent vertical columns 104 or between the vertical columns 104 located at the front and rear ends and the front and rear vertical beams adjacent to both sides of the frame body 101. The side of the frame body 101 is divided into a plurality of large maintenance observation holes by the upright posts 104, the corresponding mounting plates 105 are detachably mounted, and when the internal condition or maintenance is required to be observed, for example, when the threshing device is maintained, the corresponding mounting plates 105 are dismounted. A handle for hand holding may also be provided on the outside of each mounting plate 105 for ease of removal.

Further, the upright columns 104 are inclined from the upper end to the front end and the lower end to the back end, the upright columns 104 on the two sides of the frame body 101 are arranged in a left-right one-to-one correspondence manner, and a roller support 106 is arranged between the left-right corresponding upright columns 104. The roller bracket 106 is arranged between the corresponding upright posts 104, because the threshing requirement is that the front of the roller 4 is low and the back is high, if the upright posts 104 are straight, when the installation angle of the roller 4 is inclined greatly, the inclined roller bracket 106 cannot be arranged on the corresponding upright posts 104, so the upright posts 104 need to be arranged in a corresponding inclined mode, the roller bracket 106 is also inclined, the inclined angle of the upright posts 104 and the roller bracket 106 in the front-back direction relative to the vertical direction is the same as the inclined angle of the roller 4 in the up-down direction relative to the horizontal direction, and the roller 4 can be installed at a proper inclined angle.

Correspondingly, the top beams on the two sides of the frame main body 101 can be divided into two horizontal sections, because the front surface of the roller 4 is lower, one section in front of the top beam can be correspondingly lower, one section in back is higher, and the front end of the back section is lapped at the back end of the front section, so that some space can be saved above the front section, other parts can be conveniently installed, and the size of the whole machine body is reduced.

Further, the upright post 104 and the side plates are both structures with vertical upper parts and inward-inclined lower parts, and the joints of the upper and lower parts are bent structures or arc transition structures. In order to form the structure that the width is narrow down, the stand 104 and the curb plate of frame main part 101 both sides preferably be that upper portion is vertical, the inside slope of lower part extends, and the upper portion is vertical to be favorable to controlling holistic width, also can not touch other objects when the operation of traveling, and the inside slope of lower part extends, can be the structure of buckling, and direct dogleg shape's bending is passed (can set up the fillet and prevent colliding with in the department of buckling), also can directly set up the cambered surface shape structure that the arc transits. The cambered surface-shaped structure is structurally optimized relatively, but the manufacture and assembly are possibly troublesome, the bent structure is simple to manufacture and assemble, the space utilization rate is slightly poor, the collision is easy, and the specific structure can be determined according to the actual application condition.

On the basis of any of the above schemes, the front panel 102 is fixedly or detachably connected to the upper part of the front end of the frame main body 101, the lower part of the front end of the frame main body 101 is provided with a feeding port of the threshing machine body, and the front driving welding joint 107 is fixedly connected to the lower end of the front end of the frame main body 101. The front panel 102 is detachably connected to facilitate the disassembly, assembly and maintenance of the roller 4, and may be fixedly connected to disassemble, assembly and maintain the roller 4 in other manners. In addition, the front drive weld 107 may be welded or fixedly assembled by an assembly to the front of the lower end of the frame body 101 for mounting the front drive axle and the two front drive wheels, with the lower end of the frame body 101 as a chassis.

On the basis of any one of the above schemes, the rear end of the frame main body 101 is fixedly connected or detachably connected with the rear panel 103, the rear end lower end of the frame main body 101 is fixedly connected with a rear steering support 108, and the rear end lower end of the frame main body 101 is provided with an avoidance space 109 for avoiding the rotation of a rear steering wheel. Set up back panel 103 to the connection of dismantling, make things convenient for the dismouting and the maintenance of cylinder 4, it also can be fixed connection, through other modes dismouting and maintenance cylinder 4. In addition, with the lower end of the frame body 101 as a chassis, a rear steering bracket 108 may be welded or fixedly fitted by a fitting to the rear of the lower end of the frame body 101 for mounting a rear steering axle and two rear steering wheels.

More specifically, the concave screen 5 is fixed on the roller bracket 106, the axis of the roller 4 and the concave screen 5 are installed above the concave screen 5 in parallel, and two ends of the roller 4 are rotatably installed on the front panel 102 and the rear panel 103 through bearings respectively.

Specifically, the chopping and grass discharging device 6 is located at the rear part of the threshing machine body 10 and is installed above the rear steering bracket 108.

And because of the rear steering wheel reduces with threshing machine body 10 distance when the steering angle grow, cause the interference, can collide with the rear end lower extreme of frame main part 101, consequently, the position that corresponds rear steering wheel at threshing machine body 10 sets up dodges the structure, can set up the breach with the whole upwards arch of floorbar rear end or rear end bottom of threshing machine body 10 both sides, form between threshing machine body 10 floorbar and rear steering support 108 and dodge space 109, dodge the required space of rear steering wheel steering and upper and lower float, can make rear steering wheel and threshing machine body 10 vertically arrange compacter like this, again can not interfere with threshing machine body 10 in turning to the within range.

In addition to any of the above embodiments, the frame body 101 has a body partition 110 extending in the front-rear direction at a middle position of the upper end thereof, and the frame body 101 has a middle partition extending in the front-rear direction at a middle position of the lower end thereof. Corresponding with the structure of twin drum 4, can set up organism baffle 110 in the upper end of frame main part 101, separate two cylinders 4, will control and take off the branch mechanism and separate, control and take off the branch mechanism whereabouts space and do not establish the baffle and separate and take off the thing, take off the thing and fall into left and right cleaning room after the intermediate bottom that falls on the lower extreme naturally, clean respectively.

In this embodiment, the threshing machine body 10 can be used as a frame and a chassis, other supporting structures do not need to be additionally arranged, the requirements of the threshing machine body 10 and the frame assembly type on the assembly space are eliminated, the space is saved more, the cleaning device 7 can be fixedly connected below the threshing machine body, the cleaning chamber and the cleaning fan 8 are welded into an integrated structure with the lower end of the threshing machine body 10, and the front part and the rear part are respectively welded with the front driving welding part 107 and the rear steering support 108. The threshing body 10 of the present invention can be widely applied to agricultural machines such as combine harvesters, particularly small-sized double longitudinal axial flow combine harvesters, and other agricultural machines involving a case where the wheel track cannot be increased due to the need to widen the threshing portion, and the threshing body 10 of the present invention can also be employed.

Example 3

On the basis of embodiment 1 or embodiment 2, this embodiment is one specific embodiment of the roller cover 3 in the threshing device.

As shown in fig. 13-15, the roller cover 3 includes two roller cover bodies 301 and a roller sundry blanking assembly, the two roller cover bodies 301 are arranged side by side, the roller sundry blanking assembly includes a roller sundry shell 302 and a roller sundry distributor 303, the roller sundry shell 302 has a sundry feeding port, and the lower end of the roller sundry shell 302 is detachably connected and communicated with the two roller cover bodies 301, the roller sundry distributor 303 is installed in the roller sundry shell 302 and between the two roller cover bodies 301.

Any side wall or top wall of the drum waste shell 302 is provided with a waste feeding hole for feeding, and an area enclosed by the connecting positions of the two drum cover bodies 301 and the drum waste shell 302 is open, so that the drum cover bodies 301 are communicated with the drum waste shell 302.

The roller trash distributor 303 is fixedly or swingably mounted in the roller trash shell 302. When the roller sundry distributor 303 can swing, the lower end of the roller sundry distributor 303 is hinged with the roller sundry shell 302, and the upper end of the roller sundry distributor 303 can swing back and forth under the driving of the power mechanism, so that the adjustable distribution is realized. When the roller trash distributor 303 is fixed, the lower end of the roller trash distributor 303 is fixedly connected with the roller trash shell 302.

The grains containing impurities and needing to be threshed for the second time are sent into the threshing device through the roller impurity blanking assembly, the roller impurity distributor 303 distributes the sent grains to the two roller cover bodies 301 as evenly as possible, so that the materials in the two rollers 4 are even, the threshing device works stably and smoothly, and the blockage or the vibration caused by the unbalance of the materials is avoided.

On the basis of any scheme, the drum sundry shell 302 comprises a drum sundry cover plate and two drum sundry end plates, the middle of the drum sundry cover plate protrudes upwards, two sides of the drum sundry cover plate are detachably connected with the two drum cover bodies 301 at the same time, the two drum sundry end plates are detachably connected with two ends of the drum sundry cover plate respectively, and one of the drum sundry end plates is provided with the sundry feed inlet.

The drum waste shell 302 can be detached, so that the roller waste shell 302 can be detached and maintained conveniently, and after the drum waste shell 302 is detached during maintenance, blockage in the roller cover 3 can be cleaned, or the roller cover 3 can be directly pulled out from the threshing machine body 10, so that the roller cover 3 can be replaced or the drum 4 inside can be maintained.

On the basis of any scheme, the roller waste distributor 303 comprises two waste distributing plates, the upper ends of the two waste distributing plates are fixed with each other, the two waste distributing plates are gradually far away from each other from top to bottom, and the lower ends of the two waste distributing plates are detachably connected with the two roller cover bodies 301 respectively.

The materials evenly fall into the roller 4 below the roller cover body 301 along the two impurity material separating plates. Preferably, the trash elevator 9 for conveying trash and seeds conveys the material to the upper part of the roller trash distributor 303 and drops the material downwards, so that the material is naturally divided into two parts which respectively drop into the two roller cover bodies 301.

Specifically, as shown in fig. 14, the two waste material distributing plates form two inclined surfaces which are inclined to the two roller cover bodies 301, and the materials are guided by the inclined surfaces to be distributed.

On the basis of any of the above solutions, as shown in fig. 15, each of the roller cover bodies 301 further includes a plurality of grass guide plates 304, the grass guide plates 304 are arranged in parallel at intervals along the length direction of the roller cover body 301 and are fixedly connected with the inner side of the roller cover body 301, and the grass guide plates 304 are arranged obliquely with respect to the length direction of the roller cover body 301.

With the rotation of the roller 4, the material moves backwards along the length direction of the roller cover body 301 under the guiding action of the grass guiding plate 304.

On the basis of any scheme, the grass guiding interval between two adjacent grass guiding plates 304 is d1, and the grass guiding interval d1 at the back of the roller cover body 301 is larger than the grass guiding interval d1 at the front of the roller cover body 301.

The material moves along the direction of the axis of the roller 4 in the threshing device, namely, the material moves from front to back as shown in fig. 15, the grass guiding distance d1 is gradually increased along the moving direction of the material, because the material is partially discharged through the concave plate sieve 5 below the roller 4 in the moving process, the material at the position of the roller 4 is gradually reduced, the increase of the grass guiding distance d1 can adapt to the change of the material, the threshing efficiency is increased, the incomplete loss of crop threshing is obviously improved, and the operation efficiency is not influenced.

Preferably, the roller cover body 301 is provided with a roller cover threshing section and a roller cover separation section which are sequentially arranged from front to back, the grass guiding interval d1 of the roller cover threshing section is 80-100mm, and the grass guiding interval d1 of the roller cover separation section is 150-250 mm.

Specifically, the cylinder 4 of the threshing device comprises a threshing section and a separating section, the threshing section of the cylinder cover is correspondingly arranged above the threshing section of the cylinder 4, and the separating section of the cylinder cover is correspondingly arranged above the separating section of the cylinder 4.

On the basis of any of the above schemes, the inclination directions of the grass guide plates 304 in the two roller cover bodies 301 are opposite to the longitudinal direction of the roller cover bodies 301, the included angle between the grass guide plates 304 and the longitudinal direction of the roller cover bodies 301 is a grass guide plate included angle a1, and the grass guide plate included angle a1 is 35-45 °.

The included angle a1 of the grass guiding plate is slightly larger than that of the existing grass guiding plate, so that the threshed objects of primary threshing are properly reduced, the cleaning load is reduced, and the operation efficiency is not influenced.

The grass-guiding plates 304 in the two roller cover bodies 301 are inclined in opposite directions, that is, as shown in fig. 15, the grass-guiding plates 304 in the two roller cover bodies 301 are symmetrical. Two rollers 4 with opposite rotating directions are arranged below the roller cover 3, and the grass guiding plates 304 with opposite inclining directions are arranged corresponding to the rollers 4 with opposite rotating directions and are matched with each other to guide materials.

On the basis of any scheme, the adjacent side edges of the two roller cover bodies 301 are overlapped. The roller cover 3 has compact integral structure and convenient assembly and disassembly.

On the basis of the scheme, the harvester further comprises a cleaning device 7, a shaking plate is arranged at the front end of the cleaning device 7, and the roller sundry shell 302 is located above the shaking plate.

The material from top to bottom passes through cylinder cover body 301 and thresher after, falls on the shake board, through the shake board shake, even send the shale shaker in shake board rear to, avoids the material to block up, cleans efficiently.

Example 4

The present embodiment is a specific embodiment of the threshing device and the feeding arc plate 14 based on any one of embodiments 1 to 3.

As shown in fig. 16 and 17, each drum 4 includes a feed cone 401 and a drum shaft 402, the feed cone 401 being fixed to a front end of the drum shaft 402; the drum shafts 402 of the two drums 4 are arranged in parallel left and right; the feeding arc plate 14 is detachably arranged at the lower sides of the two feeding cones 401 and is connected to the front end of the concave plate sieve 5; the side of the feeding arc plate 14 facing the feeding cone 401 has an arc surface 141 for guiding the flow to each roller 4; the roller 4 is a longitudinal axial flow roller, two parallel longitudinal axial flow rollers are adopted for separation operation, and the feeding arc plate 14 is arranged on the lower side of the feeding cone 401, so that the separation device can independently perform the complete threshing process of crops without arranging an auxiliary device; meanwhile, the arc surfaces 141 of the feeding arc plate 14 corresponding to the two feeding cones 401 can uniformly guide the materials to the two rollers 4 respectively for threshing, so that the efficiency of threshing operation and the threshing quality are improved.

The drum shaft 402 is rotatably mounted to the detaching body 10 through a bearing.

On the basis of any scheme, a fixed breadth disc 403 is detachably arranged at the rear end of the roller shaft 402; at least one bar tooth element 404 is detachably arranged between the fixed width disc 403 and the feeding cone 401, and the bar tooth element 404 is parallel to the roller shaft 402; it is further preferred that the bar engaging members 404 of the present invention are a plurality of bars, and the plurality of bar engaging members 404 are arranged around the drum shaft 402 at regular intervals around the drum shaft 402 with the drum shaft 402 as an axis, thereby forming an open drum wall; by providing a plurality of removable bar teeth 404, the diameter of the drum 4 can be adjusted, enabling it to be used for different crops or different threshing operations.

On the basis of any scheme, the rod tooth element 404 is at least two sections, each section of the rod tooth element 404 is detachably connected with a connecting disc 405, and the connecting disc 405 is fixed on the roller shaft 402; each section of the rod tooth assembly 404 can be detached, so that the threshing device can be provided with different types of rod tooth assemblies 404 according to different types of crops, and the threshing device can be more suitable for the characteristics of different crops, thereby further improving the threshing efficiency and the threshing quality.

The rod engaging member 404 may be two, three or four segments, based on any of the above solutions; because the stalk length, the grain size and the like of the crops are different, the number of the sections of the stalk tooth assembly 404 can be set by combining the characteristics of the crops, so that the threshing device has wide applicability.

Further preferably, the rod engaging member 404 is three segments, which are used for threshing, separating and discharging grass in sequence from the feeding cone 401 to the fixed breadth disc 403, and the length of the rod engaging members 404 in the three segments is equal; the use of three sections of the straw engaging members 404 allows the crop to be sequentially threshed, separated and weed-removed without the need for other auxiliary devices to remove grass.

On the basis of any scheme, the rod tooth assembly 404 comprises threshing rods and threshing teeth, wherein a plurality of threshing teeth are uniformly fixed on each threshing rod at intervals, and each threshing tooth extends along the radial direction of each threshing rod; when the rod engaging member 404 is segmented, specifically, threshing rod segmentation, the threshing teeth are still uniformly distributed on each segment of threshing rod; when the roller 4 rotates, the threshing rod drives the crops to rotate, and the threshing teeth can thresh.

As shown in fig. 16, on the basis of any of the above solutions, each segment of the rod-tooth assembly 404 includes a threshing rod and threshing teeth, two ends of the threshing rod are respectively and fixedly provided with a rod-tooth connecting piece 4041, and the rod-tooth connecting piece 4041 is provided with a plurality of sets of rod-tooth mounting holes; a plurality of threshing teeth are uniformly fixed on the threshing rod at intervals, the threshing teeth extend along the radial direction of the threshing rod, and an included angle is formed between the axis of each threshing tooth and the drum shaft 402; the angle between the axis of threshing teeth and the drum shaft 402 is different at the mounting position of the threshing rod corresponding to each group of rod tooth mounting hole. During adjustment, the threshing rod is detached and rotated, so that the included angle between the axis of the threshing teeth and the drum shaft 402 is adjusted to a required angle, and then the rod tooth mounting hole corresponding to the position is fixed on the fixed breadth disc 403 or the connecting disc 405 through a bolt and a nut; in the adjusting process, the fixed positions of the two ends of the threshing rod are not changed, and only the mounting holes for fixing are changed; the included angle between the axis of the threshing teeth and the roller shaft is adjusted by rotating the threshing rod, so that the threshing teeth of the roller can adapt to different crops and threshing conditions, and the applicability of the roller is wider.

On the basis of any scheme, the threshing rod can be a rod piece with a smooth surface, and also can be a threaded rod, and the threaded rod is preferably a threaded rod; the threshing teeth may also be threshing elements having a particular shape, such as helical teeth, conical teeth, etc.

On the basis of any scheme, a spiral feeding blade is arranged on the feeding cone 401; when the roller 4 rolls, the feeding cone 401 is driven to rotate, the spiral feeding blade on the feeding cone 401 can drive crops to enter the roller 4 and carry out spiral motion along the roller 4, and threshing is realized under the action of threshing teeth.

On the basis of any scheme, the rotating directions of the two rollers 4 are opposite, namely clockwise and anticlockwise; the rotation directions of the two rollers 4 are set to be opposite directions, so that the crops positioned between the two rollers 4 can be further threshed under the rotation of the two rollers, and the problem of poor threshing effect caused by mutual transfer of the crops of the two rollers 4 can be prevented. Specifically, the left roller 4 rotates clockwise and the right roller 4 rotates counterclockwise as viewed in the direction shown in fig. 1.

On the basis of any scheme, the rear end edge of the feeding arc plate 14 is arc-shaped; the front end of the feeding arc plate 14 is provided with a connecting flat plate 142, the connecting flat plate 142 is fixedly connected with the arc surface 141, and the arc surface 141 is divided into a plurality of sections; the curved edge can be connected with a concave sieve 5 arranged at the lower side of the two drums 4, and the connecting plate 142 can be connected with a gap bridge 2 located at the front part of the threshing device.

On the basis of any scheme, the front size of each cambered surface 141 of the feeding arc plate 14 is larger than or equal to the rear size; when the diameter is gradually reduced, the diameter of the cambered surface 141 corresponding to each feeding cone 401 is gradually reduced, so that the flow guiding effect on the crops can be further improved, and the crops can more easily enter the roller 4.

On the basis of any scheme, an arc transition connecting structure is arranged between the two arc surfaces 141 of the feeding arc plate 14 and the connecting flat plate 142; the arc transition connection structure can form separation between the two feeding cones 401, so that crops are separated when entering the two rollers 4, and the problems of feeding faults and the like caused by mutual influence in the entering process are prevented.

On the basis of any scheme, the feeding arc plate 14 can be integrally formed or welded after being manufactured in sections; in the case of the segment fabrication, as shown in fig. 18, the segment is divided into three segments.

The working process of the threshing device is as follows: the crop enters the roller 4 along with the rotation of the feeding cone 401 under the cooperation of the feeding arc plate 14 and the feeding cone 401. The two rollers 4 rotate respectively in the anticlockwise direction and the clockwise direction, crops in each roller 4 spirally rotate towards the fixed breadth disc 403 along the rolling tangential direction, and threshing operation is carried out under the action of the rod tooth elements 404 of the rollers 4; the threshed seeds fall from the open drum wall and are continuously screened or collected, and the crop straws continuously rotate towards the fixed width disc 403 and are discharged out of the drum 4.

Example 5

This embodiment is a specific embodiment of the concave sieve 5 in the threshing device on the basis of any of embodiments 1 to 4. As shown in fig. 19 to 23, the concave sieve 5 includes at least one group of concave units, each group of concave units includes a threshing fixed concave 51 and a threshing movable concave 52, and one side edge of the threshing movable concave 52 is rotatably connected with one side edge of the threshing fixed concave 51; a pull rod mechanism 53 is fixedly arranged outside the other side edge of the threshing movable concave 52. The pull rod mechanism 53 comprises a rotary connecting piece 531, a handle 532, a handle fixing seat 533 and a rotary shaft 534; one end of the rotary connecting piece 531 is rotatably connected with the threshing movable concave 52, the other end is fixedly connected with the rotary shaft 534 through a bolt and a nut, and the rotary shaft 534 is fixedly connected with one end of the handle 532; a long hole is formed in the middle of the handle 532 along the length direction, the handle fixing seat 533 is fixed on the machine body, a plurality of adjusting holes are formed in the handle fixing seat, and the adjusting holes are arranged at intervals up and down; the long hole can be matched and connected with any adjusting hole through a bolt and a nut, so that the handle 532 can move up and down and be positioned relative to the handle fixing seat 533; when the handle 532 moves up and down, one end of the handle 532 rotates to drive the rotating shaft 534 to move left and right, and the rotating shaft 534 drives the rotating connecting piece 531 to rotate the threshing movable concave 52 up and down; the handle 532 is adopted to drive the rotating connecting piece 531 to drive the threshing movable concave plate 52 to rotate downwards or upwards, so that the structure is simple, labor is saved, and the adjusting process of the threshing movable concave plate 52 is simple and efficient; in addition, the position of the threshing movable concave 52 can be quickly judged according to the specific adjusting hole fixed by the handle 532, thereby being convenient for determining that the threshing movable concave 52 continuously rotates upwards or downwards.

The handle 532 is provided with the long hole to be fixed with any adjusting hole, the long hole is matched with the adjusting hole more easily during adjustment, and meanwhile, all the positions of the long hole can be fixed, so that the adjusting process and the fixing process are more convenient and labor-saving, and the handle 532 does not need to be accurately moved to a specific position.

On the basis of any of the above schemes, the long holes on the handle fixing seat 533 have various arrangement modes, including being arranged at intervals along a straight line or being arranged at intervals along a folding line.

On the basis of any scheme, the rotary connecting piece 531 and the rotary shaft 534 are fixed through bolts, so that the displacement of the threshing movable concave plate 52 caused by the relative rotation between the rotary connecting piece 531 and the rotary shaft 534 in the threshing operation process is prevented.

As shown in fig. 20, in any of the above embodiments, there are two rotating connectors 531, and the rotating shaft 534 penetrates through the other ends of the two rotating connectors 531; the rotating shaft 534 is parallel to the axial direction of the threshing movable concave 52, and the positions of the two rotating connectors 531 are respectively corresponding to the edges of the two ends of the threshing movable concave 52; the rotary connecting pieces 531 are arranged on the edges of the two ends of the threshing movable concave 52, so that the threshing movable concave 52 can be uniformly stressed, the rotary adjusting process of the threshing movable concave 52 is easier to control, and the threshing movable concave is more stable when being fixed.

On the basis of any scheme, the handle 532 is of a bending structure, and the bending structure is close to one end of the handle 532 connected with the rotating shaft 534; the handle 532 with the structure has short moment acting on the threshing movable concave 52 and long moment for applying force, so that the handle 532 saves more labor when adjusting the threshing movable concave 52.

As shown in fig. 21, in any of the above embodiments, the other end of the rotary connector 531 is provided with a connecting pin 535, the connecting pin 535 can rotate and be positioned relative to the rotary connector 531, and the connecting pin 535 is detachably connected with one end of the L-shaped connecting plate 536; the edge of the end part of the threshing movable concave plate 52 is provided with a fixed part which extends outwards along the radial direction of the threshing movable concave plate, and the other end of the L-shaped connecting plate 536 is rotatably connected with the fixed part of the threshing movable concave plate 52; when the rotary connecting member 531 moves left and right, the horizontal force can be converted into a downward force by the connecting pin 535 and the L-shaped connecting plate 536, so that the threshing movable concave 52 can be rotated more easily, and the adjustment process of the threshing movable concave 52 is more labor-saving.

The roller 4 comprises a threshing section, and a threshing fixed concave 51 and a threshing movable concave 52 are positioned at the lower side of the threshing section; the threshing section of the roller 4 is provided with a rotatable threshing movable concave 52, so that the gap between the threshing movable concave and the roller 4 can be adjusted, and the threshing device is suitable for different crops.

On the basis of any scheme, the concave plate screen 5 comprises two groups of concave plate units; the number of the rollers 4 is two, and the two rollers 4 are arranged side by side; a concave plate unit is arranged at the lower side of the threshing section of each roller 4; the threshing movable concave plates 52 of the two concave plate units are respectively positioned at the opposite outer sides of the two rollers 4 and have opposite rotating directions; the threshing movable concave plates 52 corresponding to the two rollers 4 can be independently adjusted, and each threshing movable concave plate 52 can adapt to the crop flow in the corresponding roller 4.

On the basis of any scheme, each concave plate unit further comprises a separation fixing concave plate 54 and a grass discharge fixing concave plate 55; each of said drums 4 further comprises a separating section and a weed-discharging section; the separation fixing concave plate 54 and the grass discharge fixing concave plate 55 are respectively and fixedly arranged at the lower sides of the separation section and the grass discharge section; each section of concave plate can be independently disassembled; meanwhile, during adjustment, only the concave plate unit corresponding to the threshing section can be adjusted, and the separation fixing concave plate 54 and the grass discharge fixing concave plate 55 are not needed, so that the adjustment process is more labor-saving and quicker.

The working process of the concave plate sieve 5 is as follows:

before the threshing device carries out threshing operation, the clearance between a threshing movable concave plate 52 of the concave plate sieve 5 and the roller 4 is adjusted; the specific adjustment mode is as follows: when the handle 532 is pulled down or pushed up, one end of the handle 532 rotates to drive the rotating shaft 534 to move left and right, so that the rotating connecting piece 531 is driven to move left and right; the rotating link 531 drives the connecting pin 535 and the L-shaped connecting plate 536 to convert the horizontal force into a downward oblique force, so that the threshing movable concave 52 rotates downward or upward, and the gap between the threshing movable concave and the roller 4 is increased or decreased. After the gap between the threshing movable concave 52 and the roller 4 is adjusted to a required size, the long hole on the handle 532 and one adjusting hole of the handle fixing seat 533 are fixed through a bolt and a nut; thereby completing the adjustment of the threshing movable concave 52.

Example 6

On the basis of any one of the embodiments 1 to 5, the embodiment is one specific embodiment of the cleaning device.

As shown in fig. 24 to 28, the cleaning plant 7 has two cleaning rooms 702 which are arranged side by side and are independent of each other, a vibrating screen 703 is independently arranged in each cleaning room 702, and the two vibrating screens 703 are independently adjustable. In order to solve the problem of insufficient strength of the vibrating screens 703, the invention adopts the cleaning device 7 with double cleaning chambers 702, and the independent vibrating screen 703 is arranged in each cleaning chamber 702, so that the length of a single vibrating screen 703 is not too long, the strength is high, the vibrating screens 703 are not easy to deform, the two vibrating screens 703 are respectively adjustable from two sides and are mutually independent, the two vibrating screens 703 can be adjusted to the same state or different states, the single adjustment adaptability is stronger than that of the original single vibrating screen 703, and the cleaning effect is better.

The adjustment of the vibrating screen 703 may be specifically performed by providing elongated holes in the side walls of the screen box 701, and assembling them at different positions, as shown in fig. 24. The independent adjustment of the two vibrating screens 703 can be realized by respectively arranging corresponding strip holes and assembling parts on the side walls of the two sides of the screen box 701 (if the scheme of the double screen box 701 is adopted, the corresponding strip holes and assembling parts can be arranged on the side walls of the two screen boxes far away from each other, and the independent adjustment of the two vibrating screens 703 cannot be influenced).

On the basis of the technical scheme, one embodiment is as follows: as shown in fig. 24 and 25, the cleaning device 7 includes a sieve box 701, a sieve box partition 704 is fixedly provided in the middle of the sieve box 701 in the front-rear direction, and the sieve box partition 704 divides the sieve box 701 into two cleaning chambers 702. The cleaning device 7 can adopt an integral frame type structure of a single screen box 701, the screen box 701 is divided into a left cleaning room and a right cleaning room by a screen box clapboard 704, the left cleaning room and the right cleaning room are respectively, and the vibrating screen 703 is divided into a two-section structure left and right and respectively adjustable.

Preferably, the bottom of the sieve box 701 is sequentially provided with an air inlet, a seed grain outlet and a sundry residue outlet from front to back, and the air inlet, the seed grain outlet and the sundry residue outlet are divided into a left part and a right part by the sieve box partition plate 704. Since the screen box 701 is divided into two cleaning chambers 702, the corresponding air inlet, grain outlet and impurity outlet at the bottom are also divided into two parts. Cleaning fan 8 can set up to two, and the spiral case is established ties, and its air outlet corresponds two air intakes respectively and bloies, perhaps singly cleans fan 8 and sets up two air outlets and correspond two air intakes respectively and bloy, realizes cleaning the function, and two seed grain exports all communicate to seed grain lift conveyer 11, and two miscellaneous exports all communicate to miscellaneous lift conveyer 9, and seed grain export and miscellaneous exit can set up the deflector that corresponds, carry out the material direction.

Preferably, the cleaning device 7 further comprises a cleaning transmission mechanism 705, and the cleaning transmission mechanism is in transmission connection with the screen box 701. The screen box 701 may be driven by a cleaning drive 705, and the power system drives the screen box 701 to vibrate through the cleaning drive 705. The cleaning transmission 705 generally includes a screen box input wheel (for power input), a driving shaft (for transmitting power from the screen box input wheel to the eccentric block), an eccentric block (for transmitting power to the screen box 701 to drive vibration), and the like.

On the basis of the technical scheme, the other implementation mode is as follows: as shown in fig. 26 to 28, the cleaning device 7 includes two screen boxes 701, the two screen boxes 701 are arranged side by side from left to right, and each screen box 701 is internally provided with an independent cleaning room 702. The cleaning device 7 can adopt a split frame type structure with double screen boxes 701, namely, two independent screen boxes 701 respectively form an independent cleaning room 702, namely a left cleaning room and a right cleaning room, and the vibrating screens 703 in the cleaning device also respectively and independently work and can be independently adjusted according to the operation working condition. Correspondingly, the lower part of the threshing machine body 10 arranged above the cleaning device 7 can be additionally provided with a middle clapboard, so that the space at the lower part of the threshing machine body 10 is divided into two parts, and two cleaning spaces above the corresponding screen boxes 701 are formed.

Preferably, the bottom of each screen box 701 is provided with an air inlet, a grain outlet and a residue outlet from front to back in sequence. Because the adopted double-sieve box 701 split frame type structure is adopted, the lower end of each sieve box 701 is required to be provided with an air inlet, a seed grain outlet and a sundry residue outlet independently, and the air inlets, the seed grain outlet and the sundry residue outlet of the two sieve boxes 701 are also arranged side by side in pairs. Cleaning fan 8 can set up to two, and the spiral case is established ties, and its air outlet corresponds the air intake of two sieve casees 701 respectively and bloies, perhaps singly cleans fan 8 and sets up two air outlets and correspond the air intake of two sieve casees respectively and bloies, realizes cleaning the function, and the seed grain export of two sieve casees 701 all communicates to seed grain lift conveyer 11, and the miscellaneous export of two sieve casees 701 all communicates to miscellaneous lift conveyer 9, and seed grain export and miscellaneous export can set up the deflector that corresponds, carries out the material direction.

The front end of each vibrating screen 703 is provided with a shaking plate, which in this embodiment is located above the cleaning fan 8.

Aiming at the technical scheme, one of the transmission modes is as follows: the cleaning device 7 further comprises a cleaning transmission mechanism 705, and the cleaning transmission mechanism 705 is in transmission connection with the two screen boxes 701 respectively. The two screen boxes 701 can be driven by a cleaning transmission mechanism 705, and a power system synchronously transmits power to the two screen boxes 701 through the cleaning transmission mechanism 705 to drive the two screen boxes 701 to synchronously vibrate. At this time, the cleaning transmission mechanism 705 needs to drive the two sieve boxes 701 to vibrate synchronously, and only needs to set two eccentric blocks on the driving shaft (if the eccentric distance and the size of the two eccentric blocks are different, the vibration of the two sieve boxes 701 may not be synchronous).

Aiming at the technical scheme, the other transmission mode is as follows: the cleaning device 7 further comprises two cleaning transmission mechanisms 705, and the two cleaning transmission mechanisms 705 are in one-to-one correspondence with the two screen boxes 701 and are in transmission connection with the two screen boxes 701. The two screen boxes 701 can be respectively driven by two cleaning transmission mechanisms 705, the screen box input wheels of the two cleaning transmission mechanisms 705 are respectively called a first screen box input wheel 23 and a second screen box input wheel 24, as shown in fig. 35, the power system respectively transmits power to the two screen boxes 701 through the first screen box input wheel 23 and the second screen box input wheel 24, and the two screen boxes 701 can be synchronously or asynchronously moved through the adjustment of transmission components (such as the diameter and the number of teeth of a belt wheel or the eccentric distance and the size of an eccentric block) of the cleaning transmission mechanisms 705, so that the use is more flexible, and the cleaning device is also suitable for various special conditions on the basis of conventional cleaning and is a better technical scheme.

Preferably, the cleaning device 7 further comprises a cleaning transmission shaft 22, and the cleaning transmission shaft 22 is in transmission connection with the two cleaning transmission mechanisms 705 respectively. On the basis that the two cleaning transmission mechanisms 705 are respectively in transmission connection with the corresponding screen boxes 701, the power system can be respectively provided with two different transmission lines for respectively transmitting power to the two cleaning transmission mechanisms 705, and the two cleaning transmission mechanisms 705 can be synchronous or asynchronous through adjustment of some transmission parts on the transmission lines, so that a double adjustment mechanism for vibration of the screen boxes 701 is formed, the adjustment is more accurate, but the structure is relatively complex; the power system can also be provided with a transmission route which is in transmission connection with the two cleaning transmission mechanisms 705 through the cleaning transmission shaft 22, one power is input, the two screen boxes 701 move independently, and the movement of the two screen boxes 701 can be synchronous or asynchronous through the adjustment of the transmission parts of the cleaning transmission mechanisms 705; the specific selection of the transmission mode can be judged according to the actual situation.

The harvester of this embodiment can regard as frame and chassis with thresher body 10, does not need other bearing structure of extra setting again, has cancelled thresher body 10 and frame assembled to the demand of fitting space, has saved the space more, can fixed connection cleaning plant 7 below it, sieve case 701 and cleaning fan 8's spiral case and thresher body 10 lower extreme welding formula structure as an organic whole. The cleaning device 7 of the invention can be widely applied to agricultural machinery, such as combine harvesters, in particular to small-sized double longitudinal axial flow combine harvesters, and other agricultural machinery, which relates to the condition that the length of the sieve sheet of the integral vibrating sieve 703 is too long, can also adopt the cleaning device 7 of the invention.

Example 7

On the basis of any one of embodiments 1 to 6, the present embodiment is one specific embodiment of the chopping and grass discharging device 6. As shown in fig. 29-33, the grass chopping and discharging device 6 comprises a grass chopping and discharging housing 605 and a grass discharging roller assembly, the grass discharging roller assembly comprises a grass discharging roller 602 and grass discharging blades 603, the grass discharging roller 602 is detachably mounted in the grass chopping and discharging housing 605 and can rotate, at least one side of the grass discharging blades 603 is fixedly connected with the grass discharging roller 602, the grass discharging blades 603 are arranged along the axial direction of the grass discharging roller 602, and one side or the middle part of the grass discharging blades 603 extends in the direction away from the grass discharging roller 602 and is provided with arc-shaped protrusions.

One side or the middle part of the grass discharge blade 603 is provided with an arc-shaped bulge for stirring straws to realize grass discharge, the surface is smooth, and grass is not easy to hang on the grass discharge blade 603. Moreover, for a small-sized harvester, the grass discharging roller assembly can be detached, the grass discharging roller assembly can be installed in the grass cutting and discharging shell 605 to discharge grass according to the operation condition, or the grass cutting roller is installed to cut the straws, a new device is not required to be added, the whole structure of the harvester is more compact, the grass discharging function is realized, and meanwhile, the work of other parts is not influenced.

Preferably, as shown in FIG. 32, the chopped weed housing 605 is formed by detachably assembling a plurality of plate-like structures, so as to facilitate the detachment, maintenance and replacement of the weed discharging roller assembly.

For the grass blades 603, the following two embodiments are included, but not limited to:

first embodiment of grass discharge blade: as shown in fig. 33, the grass discharging blades 603 are symmetrically arranged on both sides, the cross section of each grass discharging blade 603 is in a V shape, both sides of each grass discharging blade 603 are fixedly connected with the grass discharging roller 602, and the middle of each grass discharging blade 603 extends in a direction away from the grass discharging roller 602 and has an arc-shaped protrusion. The two sides of the grass discharging blade 603 are welded or bolted with the grass discharging roller 602.

Grass discharging blade embodiment two: as shown in fig. 29 and 30, one side of the grass discharging blade 603 is fixedly connected to the grass discharging roller 602, and the other side of the grass discharging blade 603 extends away from the grass discharging roller 602 and has an arc-shaped protrusion.

The grass chopping and discharging device 6 further comprises a grass discharging plate mounting seat 604, the grass discharging plate mounting seat 604 is fixedly connected with the grass discharging roller 602, one side of the grass discharging blades 603 is fixedly connected with the grass discharging plate mounting seat 604, the other side direction is far away from the direction of the grass discharging roller 602, the direction is extended and then the rear part of the rotating direction of the grass discharging roller 602 is bent, and an arc-shaped bulge is formed at the bent part.

Wherein, one side of the grass discharging blade 603 is welded or bolted with the grass discharging plate mounting seat 604. As shown in fig. 31 and 32, each grass discharging blade 603 is fixedly connected with a plurality of grass discharging plate mounting seats 604 arranged in a row; alternatively, the grass discharging plate mounting seat 604 may be a strip-shaped structure arranged along the axial direction of the grass discharging roller 602, and each grass discharging blade 603 is fixedly connected with a corresponding grass discharging plate mounting seat 604.

Compared with the scheme of the first grass discharge blade embodiment, when the same rotation diameter of the grass chopping and discharging device is achieved, the other side of the grass discharge blade 603 does not need to extend to the grass discharge roller 602, so that the area of the grass discharge blade needed by the grass discharge blade 603 adopting the second grass discharge blade embodiment is smaller, materials are saved, the effect of avoiding grass hanging can be achieved, and the weight of the device is reduced. It should be noted that the diameter of the rotation of the grass cutting and discharging device, which is indicated by the chain line in fig. 29, is the diameter of the cylinder formed by the rotation of the outermost end of the grass cutting and discharging device.

On the basis of any scheme, the number of the grass discharging blades 603 is at least three, and the at least three grass discharging blades 603 are uniformly distributed along the circumferential direction of the grass discharging roller 602.

On the basis of any of the above schemes, it is preferable that the number of the grass discharging blades 603 is five.

On the basis of any one of the above schemes, the grass discharging roller assembly further comprises a chopped grass discharging shaft 601, the chopped grass discharging shaft 601 is detachably mounted in the chopped grass discharging housing 605 and can rotate, and the grass discharging roller 602 is coaxially mounted on the outer side of the chopped grass discharging shaft 601.

Specifically, both ends of the grass chopping and discharging shaft 601 are rotatably mounted in the grass chopping and discharging housing 605 through bearings.

On the basis of any scheme, the minimum value k of the distance between the grass discharge blades 603 and the bottom plate of the chopped grass discharge shell 605 is 25-35 mm. The distance between the grass discharge blades 603 and the bottom plate of the chopped grass discharge shell 605 is too large, so that blockage can be caused, and grass discharge is not smooth; if the distance is too small, the grass discharging efficiency is low, and the discharged grass is broken. When the minimum k of the distance is 25-35mm, smooth grass discharge can be ensured, and the grass discharge efficiency is high.

As shown in fig. 30, the minimum value k represents: the grass blades 603 are rotated to be closest to the floor of the chopped grass housing 605, with the outermost ends of the grass blades 603 being spaced from the floor of the chopped grass housing 605.

The minimum value k may be adjusted by changing the size of the grass discharge blades 603, the diameter of the grass discharge roller 602, or the height of the chopped grass discharge shaft 601.

On the basis of any scheme, the straw chopping machine further comprises a chopping roller, wherein the chopping roller is detachably arranged in the chopping and straw discharging shell 605 and can rotate.

The grass discharge roller assembly and the shredding roller are both removably mounted within the shredding grass discharge housing 605 and may be used interchangeably to share the shredding grass discharge housing 605 and the transmission. If grass needs to be reserved, a grass discharging roller assembly is installed, and if grass is not needed, a chopping roller is installed to crush the grass.

Example 8

The present embodiment is one specific embodiment of a transmission system based on any one of embodiment 1 to embodiment 7.

As shown in fig. 34-36, the transmission system includes a first intermediate transmission shaft 16 and a chopper intermediate wheel 17, the engine 15 is located above the threshing body 10 and in transmission connection with one end of the first intermediate transmission shaft 16, the first intermediate transmission shaft 16 is located above the threshing body 10, the chopping and grass discharging device 6 is located at the rear part of the threshing body 10, the chopper intermediate wheel 17 is located above the chopping and grass discharging device 6, the other end of the first intermediate transmission shaft 16 is in transmission connection with the chopper intermediate wheel 17, and the chopper intermediate wheel 17 is in transmission connection with the chopping and grass discharging device 6.

The structure which is driven by the straw cutting and discharging device 6 is arranged above the threshing machine body 10, and the parts are ensured to be close to the middle part of the threshing machine body 10 as much as possible, thereby reducing the width of the whole machine and saving the space on the side surface of the threshing machine body 10.

The transmission connection in the present embodiment may be a belt transmission connection or a chain transmission connection.

Both ends of the first intermediate transmission shaft 16 may extend to both sides of the thresher body 10, respectively, or at least one end of the first intermediate transmission shaft 16 is located right above the side wall of the thresher body 10.

On the basis of any of the above schemes, the first intermediate transmission shaft 16 is located above the thresher body 10, one end of which extends to the outside of one side of the thresher body 10, and the other end of which extends to the position right above the other side of the thresher body 10. The other end of the first intermediate transmission shaft 16 is arranged above the threshing machine body 10 and transmits the power to the chopping and grass discharging device 6, thereby avoiding occupying side space.

On the basis of any of the above schemes, the transmission system further includes a drum transmission case 18 and a second intermediate transmission shaft 19, the drum transmission case 18 is located at the front side of the threshing machine body 10, the second intermediate transmission shaft 19 is located below the first intermediate transmission shaft 16, and the first intermediate transmission shaft 16 is in transmission connection with the drum transmission case 18 and the second intermediate transmission shaft 19 respectively.

The roller transmission case 18 transmits power to the rollers 4 for threshing, and when there are two rollers 4, the roller transmission case 18 is in transmission connection with the two rollers 4, respectively.

On the basis of any one of the above schemes, the transmission system further comprises a gap driving shaft 20, the second intermediate transmission shaft 19 is in transmission connection with the gap driving shaft 20, and the gap driving shaft 20 is located on the front side of the second intermediate transmission shaft 19. The second intermediate transmission shaft 19 arranged at the lower part transmits power to the gap bridge driving shaft 20, the space at the lower part of the side of the threshing machine body 10 is fully utilized, and the width of the whole machine is reduced as much as possible. The gap bridge driving shaft 20 provides power for the gap bridge 2 of the harvester.

On the basis of any one of the above schemes, the transmission system further comprises a cutting table intermediate shaft 21, the gap bridge driving shaft 20 is located at the front side of the threshing machine body 10, the cutting table intermediate shaft 21 is located the gap bridge driving shaft 20 and between the second intermediate transmission shafts 19, the second intermediate transmission shafts 19 are in transmission connection with the cutting table intermediate shaft 21 and the gap bridge driving shaft 20 in sequence. The header jackshaft 21 is additionally arranged, so that a transmission structure is convenient to arrange and the transmission ratio is convenient to adjust.

Specifically, the intermediate driving shaft 20 is connected with the cutting table intermediate shaft 21 through chain transmission, the cutting table intermediate shaft 21 is fixed with a first intermediate chain wheel, the cutting table intermediate shaft 21 is fixed with a second intermediate chain wheel, and the first intermediate chain wheel and the second intermediate chain wheel are connected through chain transmission. The second middle transmission shaft 19 is in chain transmission connection with the cutting table middle shaft 21, the second middle transmission shaft 19 is fixedly provided with a first cutting table middle chain wheel, the cutting table middle shaft 21 is fixedly provided with a second cutting table middle chain wheel, and the first cutting table middle chain wheel is in chain transmission connection with the second cutting table middle chain wheel. The second intermediate chain wheel is positioned on one side of the second header intermediate chain wheel close to the separation machine body 10. The space with smaller left and right width at the lower part of the side wall of the threshing machine body 10 is fully utilized, and the whole width of the harvester is reduced.

On the basis of any scheme, the transmission system further comprises a grain lifting transmission wheel 26 and a miscellaneous elevator transmission wheel 27, and the second intermediate transmission shaft 19 is in transmission connection with the grain lifting transmission wheel 26 and the miscellaneous elevator transmission wheel 27 respectively. The kernel lifting transmission wheel 26 is in transmission connection with the kernel lifter 11 and inputs power for the kernel lifter 11. The miscellaneous elevator transmission wheel 27 is in transmission connection with the miscellaneous elevator 9 and inputs power for the miscellaneous elevator 9.

On the basis of any one of the above schemes, the harvester further comprises a cleaning fan 8, and the seed lifting transmission wheel 26 is in transmission connection with the cleaning fan 8.

Specifically, the grain lifting transmission wheel 26 is in transmission connection with a rotating shaft of the cleaning fan 8.

On the basis of any one of the above schemes, the transmission system further comprises a cleaning transmission shaft 22, and the second intermediate transmission shaft 19 is in transmission connection with the cleaning transmission shaft 22.

When the harvester cleaning device 7 is provided with a screen box, the cleaning transmission shaft 22 is in transmission connection with the screen box and provides power.

On the basis of any one of the above schemes, the transmission system further comprises a first screen box input wheel 23 and a second screen box input wheel 24, and two ends of the cleaning transmission shaft 22 are respectively in transmission connection with the first screen box input wheel 23 and the second screen box input wheel 24.

When the cleaning device 7 of the harvester is provided with two screen boxes, the first screen box input wheel 23 and the second screen box input wheel 24 are respectively in transmission connection with the two screen boxes and provide power.

On the basis of any one of the above schemes, the transmission system further comprises a grain unloading transmission wheel 25, and the engine 15 is in transmission connection with the grain unloading transmission wheel 25.

The grain unloading driving wheel 25 is in transmission connection with the grain unloading barrel 13 and provides power input.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a small-size two vertical axial flow combine, its characterized in that, includes thresher body (10) and thresher, thresher body (10) extend along the fore-and-aft direction, and the width of its upper portion left and right sides direction is greater than the width of its lower part left and right sides direction, thresher includes two cylinder (4), two cylinder (4) rotatable install side by side in thresher body (10), the fore-and-aft direction setting of threshing body (10) is followed to the axis of cylinder (4).

2. The small-sized double longitudinal axial flow combine harvester according to claim 1, wherein the thresher body (10) comprises a frame body (101), a front panel (102) mounted at the front end of the frame body (101), a rear panel (103) mounted at the rear end of the frame body (101), and two side panels respectively mounted at both sides of the frame body (101); the both sides of frame main part (101) are fixed mounting respectively has a plurality of front and back interval to set up stand (104), the upper end of stand (104) with frame main part (101) both sides upper end back timber fixed connection, the lower extreme with the floorbar fixed connection of frame main part (101) both sides lower extreme, the width between the roof beam of frame main part (101) both sides upper end is greater than width between the floorbar of frame main part (101) both sides lower extreme, the lower part of stand (104) sets up for its upper portion inboard slope, the curb plate with correspond the side stand (104) are connected, and its lower part also sets up for its upper portion inboard slope, cylinder (4) are located in the frame main part (101).

3. The small-sized double longitudinal axial flow combine harvester according to claim 1, wherein the threshing device further comprises a drum cover (3) and a concave sieve (5), the concave sieve (5) is installed in the threshing machine body (10), the drum cover (3) is fixed above the concave sieve (5), the two drums (4) are rotatably installed in a threshing cavity enclosed by the drum cover (3) and the concave sieve (5) side by side, the front end of the threshing device is provided with a threshing feed inlet, and the rear end of the threshing device is provided with a threshing grass discharge port.

4. A small-sized dual longitudinal axial flow combine harvester according to claim 3, wherein the roller cover (3) comprises two roller cover bodies (301) and a roller trash discharging assembly, the two roller cover bodies (301) are arranged side by side, the roller trash discharging assembly comprises a roller trash shell (302) and a roller trash distributor (303), the roller trash shell (302) is detachably connected and communicated with the two roller cover bodies (301), and the roller trash distributor (303) is fixed in the roller trash shell (302) and between the two roller cover bodies (301).

5. The small-sized double longitudinal axial flow combine harvester according to claim 3, wherein the concave sieve (5) comprises two groups of concave units, each group of concave units comprises a threshing fixed concave (51) and a threshing movable concave (52), one side edge of the threshing movable concave (52) is rotatably connected with and positioned on one side edge of the threshing fixed concave (51);

each roller (4) comprises a threshing section, and the concave plate unit is arranged on the lower side of the threshing section of each roller (4); the threshing movable concave plates (52) of the two concave plate units are respectively positioned at the opposite outer sides of the two rollers (4) and have opposite rotating directions;

each group of concave plate units also comprises a separation fixed concave plate (54) and a grass discharge fixed concave plate (55); each drum (4) further comprises a separating section and a grass discharging section; the separation fixing concave plate (54) and the grass discharge fixing concave plate (55) are fixedly arranged at the lower sides of the separation section and the grass discharge section respectively.

6. The small-sized double longitudinal axial flow combine harvester according to claim 3, further comprising a gap bridge (2) and a feeding arc plate (14), wherein the gap bridge (2) is connected to the front end of the threshing machine body (10) and communicated with the threshing machine body (10), the feeding arc plate (14) is connected to the front end of the concave sieve (5), the gap bridge (2), the feeding arc plate (14) and the threshing device are sequentially connected, and the feeding arc plate (14) is provided with two arc surfaces (141) for guiding the flow to the two rollers (4).

7. The small-sized double longitudinal axial flow combine harvester according to claim 6, further comprising a gap bridge transmission assembly and a header lift cylinder (201), wherein the gap bridge transmission assembly is arranged on the side wall of the gap bridge (2), the header lift cylinder (201) is positioned on the outer side of the gap bridge transmission assembly, and two ends of the header lift cylinder are respectively hinged with the gap bridge (2) and the threshing machine body (10).

8. The small-sized double longitudinal axial flow combine harvester according to claim 2, further comprising a cleaning device (7) and a cleaning fan (8), wherein the frame body (101) is provided with a body partition (110) extending in the front-rear direction at a middle position of the upper end thereof, the frame body (101) is provided with a middle partition extending in the front-rear direction at a middle position of the lower end thereof, and the threshing device is fixed on the body partition (110); the cleaning device (7) is provided with two cleaning rooms (702) which are arranged side by side at the left and right and are independent from each other, a vibrating screen (703) is independently arranged in each cleaning room (702), and the two vibrating screens (703) are independently adjustable; the cleaning fans (8) are two and respectively blow air to the corresponding two vibrating screens (703).

9. A small-sized double longitudinal axial flow combine harvester according to any one of the claims 1 to 8, it is characterized by also comprising an engine (15), a chopping and grass discharging device (6), a first intermediate transmission shaft (16) and a chopper intermediate wheel (17), the engine (15) is positioned above the threshing machine body (10) and is in transmission connection with one end of the first middle transmission shaft (16), the first middle transmission shaft (16) is positioned above the threshing machine body (10), the chopping and grass discharging device (6) is positioned at the rear part of the threshing machine body (10), the chopper intermediate wheel (17) is positioned above the chopping and grass discharging device (6), the other end of the first middle transmission shaft (16) is in transmission connection with the chopper middle wheel (17), the chopper intermediate wheel (17) is in transmission connection with the chopping and grass discharging device (6); the threshing machine is characterized by further comprising a roller transmission box (18) and a second middle transmission shaft (19), wherein the roller transmission box (18) is located on the front side of the threshing machine body (10), the second middle transmission shaft (19) is located below the first middle transmission shaft (16), and the first middle transmission shaft (16) is in transmission connection with the roller transmission box (18) and the second middle transmission shaft (19) respectively.

10. The small double longitudinal axial flow combine harvester according to claim 9, wherein the chopping and grass discharging device (6) comprises a chopping and grass discharging housing (605) and chopping and grass discharging working members, the chopping and grass discharging working members are detachably arranged in the chopping and grass discharging housing (605) and can rotate, and the chopping and grass discharging working members are grass discharging roller assemblies or chopping rollers; grass discharging roller subassembly includes grass discharging roller (602) and grass discharging blade (603), at least one side of grass discharging blade (603) with grass discharging roller (602) fixed connection, grass discharging blade (603) are followed grass discharging roller (602) axis direction sets up, just one side or the middle part of grass discharging blade (603) are to keeping away from the direction extension of grass discharging roller (602) and have the arc arch.