WO2020215400A1

WO2020215400A1 - Vertical bending head-feed combine harvester

Info

Publication number: WO2020215400A1
Application number: PCT/CN2019/086837
Authority: WO
Inventors: 何嘉俊
Original assignee: 何嘉俊
Priority date: 2019-04-25
Filing date: 2019-05-14
Publication date: 2020-10-29
Also published as: CN110100564A; CN110100564B

Abstract

A vertical bending head-feed combine harvester, comprising a header (2). The header (2) is provided with a crop lifting mechanism, a cut knife mechanism, a gripping bending conveyor mechanism, and a threshing cylinder (3). The gripping bending conveyor mechanism comprises a gripping threshing conveyor chain (10), a bending chain (11), and a straw discharging chain (12) which have a consistent running speed. The crop lifting mechanism lifts a non-straight plant, and the lifted plant enters a position between the crop lifting mechanism and the gripping bending conveyor mechanism. In this case, the upper portion of the plant is held by the bending chain (11), the lower portion thereof is held by the straw discharging chain (12), and the root portion thereof is cut by the cut knife mechanism. With the movement of the bending chain (11) and the straw discharging chain (12), the upper portion of the plant is bent by the bending chain (11). A closed interval located in a horizontal plane is formed between two adjacent bending fingers (18) of the bending chain (11). The bending fingers (18) rotates to bend the plant on gripping chain teeth of the gripping threshing conveyor chain (10), such that the plant is controlled and brought to an inlet of the threshing cylinder (3) by the gripping threshing conveyor chain (10). The lower portion of the plant held by the straw discharging chain (12) and the upper portion of the plant are concurrently threshed at an equal speed.

Description

Top-mounted bending semi-feeding combine harvester

Technical field

The invention relates to the technical field of a half-feeding combine harvester, in particular to a top-mounted bending half-feeding combine harvester.

Background technique

The Chinese invention patent with publication number CN103039207A discloses a bidirectional clamping and bending chain conveying mechanism for a combine harvester, wherein the conveying chain for clamping and bending is provided with vertical sprocket, which is located on the outer side near the side of the Fuhe finger. The outer side of the chain plate is provided with transverse sprocket perpendicular to the outer chain plate, and a bending guide, which uses the transverse sprocket of the two-way clamping chain to move with the moving object, and uses the bending guide to guide the cone to tilt the plant into the vertical Straight chain teeth can send the upper part of the plant into the drum for threshing. The Chinese invention patents with publication numbers CN104145615A and CN104396435A also use the same clamping and bending conveyor chain with transverse sprocket.

However, the reciprocating direction of the clamping and bending conveyor chain is opposite, and the trajectory of the reciprocating stroke must be extended enough in the vertical direction to prevent the horizontal sprocket of the reciprocating chain from contacting the plant at the same time, affecting the normal movement of the plant; Moreover, the structure of the harvester adopting the clamping and bending conveyor chain with the above-mentioned structure is relatively complicated and occupies a large space, which is a necessary passage for the operation of the lower end of the plant. The volume of the lower end of the plant is much larger than that of the upper end of the plant. A slight lag can easily cause blockage and affect the operation process.

Summary of the invention

In view of the defects in the prior art, the technical problem to be solved by the present invention is to provide a top-mounted bending half-feeding combine harvester to hold the lower end and the upper end of the plant during the process of plant support.

In order to solve the above-mentioned technical problems, the top-mounted bending half-feeding combine harvester of the present invention includes a chassis, a header and an engine that drives the chassis to move, and the header is provided with a supporting mechanism driven by the engine , A cutter mechanism, a clamping and bending conveying mechanism, a threshing drum and a grain collecting mechanism, the clamping and bending conveying mechanism includes a clamping and threshing conveying chain, a bending chain and a grass arranging chain with a consistent running speed; in the threshing One side of the entrance of the drum is provided with the bending chain, and the running track of the bending chain is in the horizontal plane. The bending chain includes a bending driving wheel, a first bending driven wheel, a second bending driven wheel, The lower bottom plate of the bending chain and the upper cover plate of the bending chain are provided with the bearing seat of the first bending driven wheel and the mounting shaft of the second bending driven wheel. The shaft is installed downward through the bearing seat, the second bending driven wheel is fitted with rolling bearings and then assembled on the mounting shaft. The bending fingers are evenly distributed on the chain plates of the bending chain, and the chain of the bending chain bypasses the bending driving wheel , The first bending driven wheel and the second bending driven wheel; the running track of the bending fingers between the first bending driven wheel and the second bending driven wheel is close to the running track of the supporting fingers of the supporting mechanism , The running track of the bending finger between the bending driving wheel and the second bending driven wheel is close to the entrance end surface of the threshing drum; the running track of the clamping threshing conveyor chain is located in the vertical plane, and the clamping threshing conveyor The chain includes a running rail, a driven wheel of the clamping and threshing conveyor chain and a driving wheel of the clamping and threshing conveyor chain. The chain plate of the clamping and threshing conveyor chain is provided with vertical clamping sprocket, which clamps the front side of the threshing conveyor chain A front cover is provided, a rear baffle is provided on the rear side, the running rail is arranged on the upper part of the rear baffle, and a mounting sleeve is also provided at the left end of the rear baffle. The clamping threshing The driven wheel of the conveyor chain is installed in the mounting sleeve through a bracket, and a compression spring is arranged between the bracket and the mounting sleeve; the clamping threshing conveyor chain bypasses the clamping threshing conveyor chain driving wheel, running guide rail and clamping The threshing conveyor chain is provided with a driven wheel; a first bead is arranged above the clamping and threshing conveyor chain, and a plant threshing channel is formed between the first bead and the clamping and threshing conveyor chain; the rear side gear of the clamping and threshing conveyor chain A pressing plate is arranged on the rear and upper part of the plate to increase the frictional force of plant threshing and forcing the plant to approach the threshing drum; the front and lower part of the front cover plate of the clamping threshing conveyor chain is provided with a second pressing bar to clamp the front cover plate of the threshing conveyor chain The gap with the second bead forms a channel for forcing the plants to maintain a vertical attitude for threshing; the running track of the grass row chain is located in the horizontal plane, and the grass row chain is arranged directly below the clamping and threshing conveyor chain, above and below the grass row chain The upper cover plate and the lower plate of the grass chain are respectively provided. The grass drive wheel and the grass driven wheel are arranged between the grass chain upper cover and the grass chain lower plate. The grass chain is wound around the On the grass row driving wheel and the grass row driven wheel, a number of rows of grass chain teeth are arranged on the chain plate of the grass row chain, and the grass row chain channel barriers are arranged above the tooth tips of the grass row chain teeth. One end of the rail is bent forward and fixed on the grass supporting mechanism; the upper cover plate of the grass chain is fixedly installed on the lower bottom plate of the grass chain, and the upper cover plate of the grass chain is in front of The gap between the edge and the rails of the grass-row chain channel forms a channel for the grass-row chain teeth to move the plants; the cutting knife mechanism includes a cutting knife arranged on the cutting knife beam, and the cutting knife is arranged on the bending chain and the grass row Right below the chain.

Preferably, the grass supporting mechanism includes a supporting grass top plate, a supporting grass bottom plate, and a supporting grass chain arranged between the supporting grass top plate and the supporting grass bottom plate, and a plurality of supporting grasses are arranged on the chain plate of the supporting grass chain. The grass supporting mechanism further includes a supporting grass channel baffle located above the grass supporting fingertips of the grass supporting chain; the first bead, the second bead and the grass chain channel barrier are all fixed on the Fuhe on the floor.

Preferably, the header includes a left side guard plate and a right side guard plate arranged vertically, a vertical middle partition is arranged between the left side guard plate and the right side guard plate, and the left side guard The plate is connected to the middle partition through the grain collecting drum, and the middle partition is connected to the right side guard plate through the upper cover plate of the bending chain, the lower bottom plate of the bending chain and the mounting plate; A threshing drum box containing the threshing drum is formed between the threshing drums, and a grain collecting spiral auger channel is provided at the bottom of the threshing drum box, and the grain collecting spiral auger is arranged in the channel; A grain throwing and conveying channel is connected to the mouth of the spiral auger; the left end of the shaft of the grain gathering spiral auger is provided with a throwing bucket, and the throwing bucket is located at the bottom of the grain throwing and conveying channel. The left end of the shaft of the screw auger is rotatably connected with the side plate of the grain throwing and conveying channel, and the right end passes through the middle partition and is rotatably connected with the middle partition; The right end of the side guard plate is connected with the middle partition board, and the rear side guard plate is arranged at the front end of the threshing drum box and is parallel to the rotating shaft of the threshing drum; the left side guard plate and the right side guard plate pass through the lower bottom plate of the grass row chain Connection, a notch is provided on the left side guard plate for the installation of the grass chain, and a reinforcing connecting plate is provided on the lower bottom plate of the grass chain, and the reinforcing connecting plate is connected to the upper and lower sides of the notch; The cutter beam is arranged directly below the grass chain and is connected to the left side guard plate and the right side guard plate respectively.

Preferably, the gap between the lower edge of the rear side baffle that clamps the threshing conveyor chain and the grain collecting drum forms a channel for cleaning and discharging the threshing plant debris and sundries.

Preferably, the header is installed on the chassis through a lifting mechanism, the lifting mechanism includes a support seat fixed on the chassis, and a connector fixed on the header; the support seat includes two A vertically arranged guide rail. A first connecting beam and a second connecting beam are arranged from top to bottom between the two guide rails. An assembly seat is provided on the second connecting beam, and a screw is rotatably connected in the assembly seat. The lower end of the guide rail is fixedly connected to the chassis through a connecting plate; the connecting piece includes two vertically arranged positioning plates, the two positioning plates are fixedly connected to the header, and the two positioning plates are connected from above. A first crossbar and a second crossbar are provided to the lower level, the middle of the first crossbar is provided with an adjusting nut adapted to the screw rod, and the middle of the second crossbar is provided for the screw to pass through. The guide sleeve; the ends of the first cross bar and the second cross bar pass through the two positioning plates, and a guide wheel is sleeved on the outer periphery of the end of the first cross bar and the second cross bar , The guide wheel passes through the guide rail.

Preferably, a transmission is provided on the chassis, and the input shaft of the transmission is drivingly connected to the output shaft of the engine; the transmission includes a first output shaft, a second output shaft, and a third output shaft. The shaft and the second output shaft are in transmission connection with the driving wheels on the chassis, and the third output shaft is in transmission connection with the header angle gearbox provided on the header through a universal joint; the universal joint The end far away from the third output shaft is connected with a hexagonal shaft, and a hexagonal bushing connected to the hexagonal shaft is provided in the header angle gearbox, and the hexagonal bushing forms the power input of the header angle gearbox Shaft, and the hexagonal sleeve is connected with the power output shaft of the header angle gear transmission through a bevel gear.

Preferably, the clamping and bending conveying mechanism includes a bending angle gear transmission, and the power input shaft of the bending angle gear transmission is connected with the power output shaft of the header angle gear transmission through a chain drive; The bending angle gear transmission is provided with a first power output shaft, a second power output shaft and a third power output shaft that are drivingly connected to the power input shaft of the bending angle gear transmission, the first power output shaft Coaxially with the threshing drum, the first power output shaft is connected to the threshing drum through a first shaft sleeve for driving the threshing drum to rotate, and the shaft of the grain collection screw auger is connected to the first shaft sleeve The drive wheel of the clamping and threshing conveyor chain is installed on the second power output shaft, and the third power output shaft is connected in transmission with the bending drive wheel.

Preferably, the cutter mechanism includes a cutter gearbox, the first bending driven wheel is fixedly connected to the power input shaft of the cutter gearbox through a second shaft sleeve, and the top of the cutter gearbox The power output shaft is fixedly connected with the grass row driving wheel, and the power output shaft at the bottom of the cutting knife gearbox is fixedly connected with a driving cam, and the driving cam is used to drive the cutting knife to move.

The present invention has the following beneficial effects:

(1) The crop supporting mechanism of the present invention straightens the plant with an incorrect posture, and the post-adjusted plant enters between the crop supporting mechanism and the clamping and bending conveying mechanism. At this time, the upper part of the plant is held by the bending sprocket frame , The lower part is held by the grass sprocket frame, and the root is cut by the cutter mechanism; a closed interval is formed between the two sprocket, the plants in the closed interval are driven by the chain teeth, and the plants can move up and down in the vertical direction to adapt Due to the fact that the plant is not absolutely vertical, and the spacing between the supporting fingers and the chain teeth brings a little advance or delay, this situation is called frame control. With the movement of the bending chain and the grass chain, it calmly frame The plants are controlled and transported to the second bending driven wheel. The bending refers to the rotation to bend the plants on the clamping sprocket of the clamping threshing conveyor chain, so that the plants are controlled by the clamping threshing conveyor chain and brought into the entrance of the threshing drum , And are clamped by the clamping chain teeth to move towards the exit of the threshing drum, the threshing teeth of the threshing drum pass through the moving plants to comb the plants to complete the threshing process; in this process, the lower part of the plant is rowing grass The frame of the chain is held in parallel with the upper part of the plant at the same speed. In the present invention, the first bead, the second bead and the grass chain channel can ensure that the plant passes through the plant threshing channel in a vertical posture, while clamping the rear of the threshing conveyor chain. The pressure plate on the side baffle can define the vertical position of the upper part of the bent plant, ensuring that the plant is close to the threshing drum. It can be seen that the present invention can perform multi-organization parallel docking operations in the process of supporting the plants to simultaneously control the lower and upper ends of the plants, and also perform cutting and bending feeding. The position of the cutting knife is directly below the threshing barrel box, and the distance between the plant and the feeding inlet of the threshing barrel box tends to zero when the plant is cut.

(2) The clamping and threshing conveyor chain of the present invention is only provided with vertical clamping sprocket, and the horizontal sprocket is omitted. There is no situation that the horizontal sprocket of the reciprocating stroke is in contact with the plant at the same time, so the clamping threshing conveyor chain The height in the vertical direction and the width in the horizontal direction can be reduced, so that under the gripping and threshing conveyor chain, the position of the channel for cleaning and discharging the threshing plant debris and debris is freed, and the threshing The right side of the conveyor chain gives way to the installation position of the second bushing.

(3) The cutting table of the present invention is installed on the chassis through a lifting mechanism, so that the height of the cutting table relative to the chassis can be adjusted, which can meet the needs of harvesting plants of different heights, and expand the scope of application of the harvester; in addition, the cutting table is lifted and lowered. Mechanism installation. In practice, the support base can be installed on other walking chassis and connected to the appropriate power to be assembled into a combine harvester that meets the needs of different environments.

(4) The third output shaft of the transmission that transmits power to the header is only directly connected with the hexagonal shaft, and the axial position of the hexagonal bushing relative to the hexagonal shaft is adjustable, and the circumferential position is fixed. When the header is raised and lowered, the change Only the up and down position of the hexagonal bushing relative to the hexagonal shaft does not affect the power transmission between the hexagonal bushing and the hexagonal shaft, so that when the height of the header relative to the chassis changes, the power mechanisms on the header can still be guaranteed Power transmission with the transmission.

(5) In order to eliminate the influence of the coaxiality error between the hexagonal shaft and the third output shaft caused by the lifting of the header on the power transmission, in the present invention, the hexagonal shaft and the third output shaft are connected by a universal joint to ensure The power transmission between the hexagonal shaft and the third output shaft is normal.

Description of the drawings

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings that need to be used in the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, various elements or parts are not necessarily drawn according to actual scale.

Figure 1 is a schematic diagram of the structure of the top-mounted bending half-feeding combine harvester of the present invention;

Figure 2 is one of the structural schematic diagrams of the clamping, bending and conveying mechanism of the present invention;

Fig. 3 is the second structural diagram of the clamping, bending and conveying mechanism of the present invention;

Figure 4 is one of the schematic diagrams of the power transmission structure of the present invention;

Figure 5 is the second schematic diagram of the power transmission structure of the present invention;

Figure 6 is a schematic diagram of the structure of the header of the present invention;

Fig. 7 is a schematic view of the structure of the connection between the lifting mechanism and the header of the present invention and the schematic view of the structure of the connecting piece of the lifting mechanism.

Reference signs:

1-chassis; 2-header; 3-threshing drum; 4-fuhe top plate; 5-fuhe bottom plate; 6-fuhe chain; 7-fuhe finger; 8-fuhe channel baffle; 9-fenhe Plate; 10-clamping threshing conveyor chain; 11-bending chain; 12-row grass chain; 13-bending driving wheel; 14-first bending driven wheel; 15-second bending driven wheel; 16-bending Bending chain lower bottom plate; 17-bending chain upper cover plate; 18-bending finger; 19-front cover plate; 20-rear side baffle plate; 21-first bead; 22-press plate; 23-second bead; 24-row grass chain upper cover plate; 25-row grass chain lower bottom plate; 26-row grass chain channel rail; 27-cutting knife beam; 28-cutting knife; 29-longitudinal beam; 30-post; 31-left Guard plate; 32-right guard plate; 33-middle partition; 34-grain collecting drum; 35-mounting plate; 36-threshing drum box; 37-grain collecting screw auger; 38-grain throwing and conveying channel; 39 -Throwing bucket; 40-reinforced connecting plate; 41-rail; 42-screw; 43-positioning plate; 44-adjusting nut; 45-guide sleeve; 46-guide wheel; 47-transmission; 48-engine; 49-part One output shaft; 50-second output shaft; 51-third output shaft; 52-drive wheel; 53-cutting table angle gear transmission; 54-hexagonal shaft; 55-bending angle gear transmission; 56-second PTO shaft; 57-third PTO shaft; 58-first bushing; 59-cutter gearbox; 60-second bushing; 61-Fuhe angle gear gearbox; 62-running rail; 63-installation Cover; 64-support; 65-clamping threshing conveyor chain driven wheel; 66-clamping threshing conveyor chain driving wheel.

Detailed ways

The embodiments of the technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and therefore are only used as examples, and cannot be used to limit the protection scope of the present invention.

As shown in Figures 1-8, the top-mounted bending semi-feeding combine harvester provided by an embodiment of the present invention includes a chassis 1, a header 2 and an engine that drives the chassis 1 to move. The header 2 is provided with There are a grain supporting mechanism, a cutter mechanism, a clamping and bending conveying mechanism, a threshing drum 3 and a grain gathering mechanism driven by the engine.

In this embodiment, the above-mentioned supporting grass mechanism includes a supporting grass top plate 4, a supporting grass bottom plate 5, and a supporting grass chain 6 arranged between the supporting grass top plate 4 and the supporting grass bottom plate 5. The chain plate of the supporting grass chain 6 A number of supporting fingers 7 is provided, and the supporting mechanism also includes a supporting channel baffle 8 located above the supporting fingertips of the supporting chain 6, and the supporting channel baffle 8 is parallel to the upward trajectory of the supporting fingers 7 , The bottom of the top plate 4 and the bottom of the baffle 8 of the weed channel are both provided with a wed dividing plate 9.

The Fuhe mechanism is a mature mechanism with half-feeding harvesters. Components of different brands are different, but its function has not changed. It is the running channel of Fuhe plants. The grass supporting mechanism can be arranged symmetrically or sequentially along the width direction of the cutting table. Correspondingly, the clamping, bending and conveying mechanism and the cutting knife mechanism corresponding to the supporting grass mechanism change operations according to the increase or decrease of the running channel of the supporting grass plant. The length of the trajectory is used to construct models of different specifications.

The above-mentioned clamping and bending conveying mechanism includes a clamping and threshing conveying chain 10, a bending chain 11, and a grass row chain 12 with the same running speed.

Specifically, the above-mentioned bending chain 11 is provided on one side of the entrance of the threshing drum 3, and the running track of the bending chain 11 is in the horizontal plane. The bending chain 11 includes a bending driving wheel 13 and a first bending driven wheel 14. , The second bending driven wheel 15, the lower bottom plate 16 of the bending chain, and the upper cover plate 17 of the bending chain. The lower bottom plate 16 of the bending chain is provided with the bearing seat of the first bending driven wheel 14 and the second bending driven wheel 15 is installed on the mounting shaft, the first bending driven wheel 14 passes through the bearing seat in the axial direction, and the second bending driven wheel 15 is fitted with rolling bearings and then assembled on the mounting shaft. The chain plates of the bending chain 11 are evenly distributed Bending finger 18, the chain of the bending chain 11 bypasses the bending driving wheel 13, the first bending driven wheel 14 and the second bending driven wheel 15; the first bending driven wheel 14 and the second bending driven wheel 15 The running track of the bending finger 18 in between is close to the running track of the above-mentioned supporting finger 7, and the running track of the bending finger 18 between the bending driving wheel 13 and the second bending driven wheel 15 is close to the entrance end surface of the threshing drum 3. .

The running track of the clamping and threshing conveyor chain 10 is in a vertical plane, the chain plates of the clamping and threshing conveyor chain 10 are provided with vertical clamping sprocket, and the front side of the clamping and threshing conveyor chain 10 is provided with a front side cover Plate 19, the rear side is provided with a rear side baffle 20, above the rear side baffle is provided a running rail 62 that clamps the threshing conveyor chain, and a driven wheel mounting sleeve is provided at the left end of the rear side baffle 20 that clamps the threshing conveyor chain 63. There is a compression spring in the mounting sleeve 63. The driven wheel 65 of the threshing conveyor chain is clamped and installed on the bracket 64 and then fitted into the mounting sleeve 63. The compression spring abuts between the mounting sleeve 63 and the bracket 64. A first bead 21 is provided above the clamping and threshing conveying chain 10, and a plant threshing channel is formed between the first bead 21 and the clamping and threshing conveying chain 10; an enlarged plant is arranged on the upper rear side of the rear baffle 20 The threshing friction force forces the plant to approach the pressure plate 22 of the threshing drum; a second bead 23 is provided under the front cover 19 of the clamping and threshing conveyor chain, and the gap between the front cover of the clamping and threshing conveyor chain and the second bead 23 is formed Forcing the plant to maintain a vertical posture for threshing channels.

The running track of the above-mentioned grass-row chain 12 is located in the horizontal plane, and the grass-row chain 12 is arranged directly below the clamping and threshing conveyor chain 10. The grass-row chain upper cover 24 and the grass-row chain are respectively arranged above and below the grass chain 12 The lower bottom plate 25 is provided with a grass row driving wheel and a grass row driven wheel between the grass row chain upper cover plate 24 and the grass row chain lower bottom plate 25. The grass row chain 12 is wound on the grass row drive wheel and the grass row driven wheel. A number of rows of grass chain teeth are provided on the chain plate of the grass chain 12, and a grass chain channel barrier 26 is provided above the tooth tip of the grass chain tooth. There is a certain gap in the vertical direction, which partially overlaps in the horizontal direction; the above-mentioned grass chain upper cover 24 is fixedly installed on the lower plate 25 of the grass chain, and the front edge of the grass chain upper cover 24 is connected to the grass chain channel block The gap between the strips 26 forms a channel for the grass sprocket to move the plants.

In this embodiment, the first bead 21, the second bead 23, and the grass chain channel barrier 26 are fixedly connected to the supporting grass floor 5 before bending at one end close to the supporting grass mechanism.

The above-mentioned cutting knife mechanism includes a cutting knife 28 arranged on the cutting knife beam 27. The cutting knife 28 is arranged directly under the bending chain 11 and the grass chain 12. On the cutting knife beam 27, two ends of the cutting knife 28 are respectively provided. A longitudinal beam 29 is provided, and each longitudinal beam 29 is provided with a column 30 fixedly connected to the lower part of the grass bottom plate 5, and the above-mentioned grass dividing plate 9 is located at the front end of the longitudinal beam 29.

When the top-mounted bending half-feeding combine harvester in this embodiment is working, the plant support mechanism will straighten the plant with an incorrect posture, and the posture adjusted plant will enter between the plant support mechanism and the clamping and bending conveying mechanism. , The upper part of the plant is held by the bending chain 11 frame, the lower part is held by the grass chain 12 frame, the root is cut by the cutting knife 28; with the movement of the bending chain 11 and the grass chain 12, the upper part of the plant is bent The chain 11 is bent, and the two adjacent bending fingers 18 of the bending chain 11 form a closed interval in the horizontal plane, which calmly frame the control plant and transport it to the second bending driven wheel 15, the bending finger 18 Rotating homeopathically bends the plants on the clamping sprocket of the clamping and threshing conveyor chain 10, so that the plants are controlled by the clamping and threshing conveyor chain 10 and brought into the entrance of the threshing drum 3, and are clamped by the clamping sprocket. Moving toward the exit of the threshing drum 3, the threshing teeth of the threshing drum 3 pass through the moving plants to comb the plants to complete the threshing process; in this process, the lower part of the plant is held in the frame of the row of grass chains 12 The upper part of the threshing conveyor chain is parallel at the same speed. The first bead 21, the second bead 23 and the grass chain channel fence 26 can ensure that the plants pass through the plant threshing channel in a vertical position, while clamping the threshing conveyor chain 10 on the rear side baffle 20 The pressing plate 22 can limit the position of the upper part of the bent plant to ensure that the plant is close to the threshing drum 3.

In this embodiment, the pressing plate 22 is behind the clamping and threshing conveyor chain 10, and its lower end is close to the root of the clamping sprocket of the clamping and threshing conveyor chain 10 in the vertical direction, and close to the rolling of the threshing teeth of the threshing drum 3 in the horizontal direction. The trajectory, at its right end (the end close to the bending chain 11), has an upward bevel guide section to facilitate the introduction of the upper part of the bent plant into the entrance of the threshing drum 3.

Specifically, the above-mentioned clamping and threshing conveyor chain 10 passes through the running rail 62, bypassing the clamping and threshing conveyor chain driven wheel 65 and the clamping and threshing conveyor chain driving wheel 66, and the top of the front cover plate 19 is lower than that The tooth roots of the clamping sprocket, the lower edges of the front cover 19 and the rear baffle 20 are lower than the tooth tips of the clamping sprocket running there, and the front cover 19 and the rear stop The edge of the plate 20 near the exit of the threshing drum 3 is longer than the tooth tip of the clamping sprocket that runs there; the front side edges of the upper cover plate 24 and the lower bottom plate 25 of the grass arranging chain are located at this position The roots of the sprocket teeth, the edge of the upper cover 24 and the lower bottom plate 25 of the wicker chain close to the exit of the threshing drum 3 are longer than the tooth tips of the wicker sprocket teeth running there, on the left There is also a protruding inclined surface at the side end to cover part of the tooth surface, so that after the plant is discharged from the threshing drum 3, the frame of the plant by the clamping sprocket and the grass rowing sprocket is released to facilitate the smooth discharge of the plant.

In addition, the operating speed of the harvester in this embodiment and the operating speed of the Fuhe finger 7 need to meet a certain relationship to ensure that when the root of the plant is at the edge of the cutting knife 28, the upper part of the plant is exactly at the two adjacent bends. Between the fingers 18, prevent the plant from entering between two adjacent bending fingers 18 too early or late, so as to avoid the plant from being pulled up and down. Operating speed set _operation is i harvester, grain refers to the intersection of an extension line help flanks running track 7 of the clamping plane of the sprocket is A, operating means 7 Rotary Wo trajectory plane and the ground plane of intersection is B, cutter blade 28 in the projection points of the ground level is C, linear velocity operation means Rotary Wo i 7 ≈i _help _transport × AB / BC, the cutter blade 28, i.e. the projected point C moves from point B to point The time required is roughly the same as the time required for Fuhe Finger 7 to move from point B to point A. It should be noted that the above-mentioned relationship between Fuhe Finger 7 and the operating speed of the harvester has been described in detail by the applicant in the previously authorized invention patent (publication number CN104396435A). This speed relationship does not belong to this application. The scope of protection will not be repeated here.

Specifically, the above-mentioned header 2 includes a left side guard plate 31 and a right side guard plate 32 vertically arranged, a vertical middle partition 33 is arranged between the left side guard plate 31 and the right side guard plate 32, and the left side guard plate The guard plate 31 is connected to the middle partition 33 through the grain collecting drum 34, and the middle partition 33 is connected to the right guard plate 32 through the upper cover plate 17 of the bending chain, the lower bottom plate 16 of the bending chain, and the mounting plate 35; A threshing drum box 36 containing the threshing drum 3 is formed between the plate 31 and the intermediate partition 33. At the bottom of the threshing drum box 36 is provided a grain gathering spiral auger channel, and a grain gathering spiral auger 37 is provided in the channel. , The grain collecting screw auger passage opening close to the left side guard 31 is connected with a grain throwing and conveying passage 38, and the left end of the shaft of the grain collecting spiral auger 37 is provided with a throwing bucket 39, which is located At the bottom of the grain throwing and conveying channel 38, the left end of the shaft of the grain collecting screw auger 37 is rotatably connected with the side plate of the grain throwing and conveying channel 38, and the right end passes through the middle partition 33 and rotates with the middle partition 33 In connection, the above-mentioned grain throwing and conveying channel 38, the grain collecting screw auger 37 and the throwing bucket 39 form the aforementioned grain collecting mechanism.

When the harvester is working, the plants are threshed under the action of the threshing drum 3, and the fallen grain particles fall into the bottom of the threshing drum box 36 under the action of gravity. With the rotation of the grain collecting screw agitator 37, the grain particles are passed by the grain collecting spiral. The auger 37 drives gradually to move in the direction of the auger 39, and finally enters the hoisting bucket 39. The hoisting bucket 39 is fixedly connected with the shaft of the grain collection screw auger 37, and then follows the rotation of the grain collection screw auger 37 , The throwing bucket 39 is easy to periodically throw up the grain particles inside it and discharge them from the top outlet of the grain throwing and conveying channel 38 for easy collection. It should be noted that the throwing bucket 39 must have a sufficiently high rotation speed to achieve the purpose of conveying and transferring grain upwards. It can be used as a choice for terraces and paddy field machines; if the grain needs a higher lift and a longer transfer distance, you can choose Now a very mature screw auger conveying method.

Specifically, the left end of the rear baffle plate 20 that clamps the threshing conveyor chain 10 extends out of the left side guard plate 31, the right end is connected with the middle partition 33, and the rear baffle plate 20 is arranged at the front end of the threshing drum box 36 and parallel On the rotating shaft of the threshing drum 3; the gap between the lower edge of the rear side baffle 20 clamping the threshing conveyor chain 10 and the grain collecting drum 34 forms a channel for cleaning and discharging the threshing plant debris and debris.

Specifically, the left side guard plate 31 and the right side guard plate 32 are connected by the lower bottom plate 25 of the grass row chain, and the left side guard plate 31 is provided with a gap for the installation of the grass row chain 12, and the grass row chain The bottom plate 25 is provided with a reinforced connecting plate 40, which is connected to the upper and lower sides of the gap; the cutter beam 27 is provided directly under the grass chain 12, and is respectively connected to the left side guard 31 and the right side guard The board 32 is connected.

Further, the header 2 of this embodiment is installed on the chassis 1 through a lifting mechanism, which includes a support seat fixed on the chassis 1 and a connecting piece fixed on the header 2; wherein The support base includes two vertically arranged guide rails 41, a first connecting beam and a second connecting beam are arranged from top to bottom between the two guide rails 41, and an assembly seat is provided on the second connecting beam, and the assembly seat rotates A screw 42 is connected, and the lower end of the guide rail 41 is fixedly connected to the chassis 1 through a connecting plate; the connecting piece includes two vertical positioning plates 43, the two positioning plates 43 are fixedly connected to the header 2, two positioning plates A first crossbar and a second crossbar are horizontally arranged from top to bottom between 43, the middle of the first crossbar is provided with an adjusting nut 44 that is adapted to the screw 42, and the middle of the second crossbar A guide sleeve 45 for the screw 42 to pass through is provided; the ends of the first and second cross bars both penetrate through the two positioning plates 43, and are located at the ends of the first and second cross bars. A guide wheel 46 is sleeved on the outer circumference, and the guide wheel 46 is inserted in the guide rail 41. By rotating the adjusting nut 44, the guide wheel 46 moves up and down along the guide rail 41 in the vertical direction, so that the height of the header 2 relative to the chassis 1 can be adjusted. In practice, the support base can also be installed on other power-providing devices. On the walking chassis, the header 2 and the walking chassis can be assembled to form a combine harvester that meets different environmental requirements.

The engine 48 of the harvester of this embodiment is arranged on the chassis 1, and a transmission 47 is arranged on the chassis 1. The input shaft of the transmission 47 is connected with the output shaft of the engine 48 through a belt drive, and the transmission 47 is used to transmit power to the chassis 1. The walking driving wheel, the supporting mechanism, the cutter mechanism, the clamping and bending conveying mechanism, the threshing drum 3 and the grain gathering mechanism.

The aforementioned transmission 47 includes a first output shaft 49, a second output shaft 50, and a third output shaft 51. The first output shaft 49 and the second output shaft 50 are in driving connection with the drive wheels 52 on the chassis 1; The output shaft 51 is in transmission connection with the header angle gear box 53 provided on the header 2 through a universal joint. The header angle gear box 53 is fixed on the mounting plate 35 and is used to drive the header on the header 2 The actuators transmit power. The end of the universal joint away from the third output shaft 51 is connected with a hexagonal shaft 54. A hexagonal shaft sleeve that is connected to the hexagonal shaft 54 is provided in the header angle gearbox 53. The hexagonal sleeve forms The power input shaft of the header angle gear transmission 53, and the hexagonal sleeve and the power output shaft of the header angle gear transmission 53 are connected by bevel gear transmission. In this embodiment, the third output shaft 51 of the transmission 47 that transmits power to the header 2 is only directly connected to the hexagonal shaft 54, and the axial position of the hexagonal shaft sleeve relative to the hexagonal shaft 54 is adjustable, and the circumferential position is fixed. When the header 2 is raised and lowered, only the upper and lower positions of the hexagonal bushing relative to the hexagonal shaft 54 are changed, and the power transmission between the hexagonal bushing and the hexagonal shaft 54 is not affected. This occurs at the height of the header 2 relative to the chassis 1 When changed, the power transmission between the power mechanisms on the header 2 and the transmission 47 can still be ensured.

Specifically, the above-mentioned clamping and bending conveying mechanism includes a bending angle gear transmission 55 provided on the mounting plate 35, and the cutting knife mechanism includes a cutting knife transmission 59; wherein, the power input shaft of the bending angle gear transmission 55 is connected to The power output shaft of the header angle gear transmission 53 is connected by a chain drive; the bending angle gear transmission 55 is provided with a first power output shaft and a second power transmission connected to the power input shaft of the bending angle gear transmission 55 The output shaft 56 and the third power output shaft 57, the first power output shaft is coaxial with the threshing drum 3, and the first power output shaft is connected to the threshing drum 3 through a first sleeve 58 for driving the threshing drum 3 to rotate , And the shaft of the grain collection screw auger 37 is connected with the first shaft sleeve 58 through a chain drive; the driving wheel 66 of the clamping and threshing conveyor chain is installed on the second power output shaft 56, and the third power output shaft 57 is connected to the bending driver The wheel 13 is in transmission connection, the first bending driven wheel 14 is fixedly connected to the power input shaft of the cutter gearbox 59 through the second bushing 60 downwards, and the power output shaft on the top of the cutter gearbox 59 is connected to the grass row The grass discharging driving wheel of the chain 12 is fixedly connected, and the power output shaft at the bottom of the cutting knife gearbox 59 is fixedly connected to a driving cam, and the driving cam is used to drive the cutting knife 28 to move.

It can be seen that the bending angle gear gearbox 55 of this embodiment can simultaneously transmit power to the threshing drum 3, the grain gathering screw auger 37, the bending chain 11, the grass arranging chain 12 and the clamping and threshing conveyor chain 10. The synchronous movement of the bending chain 11, the grass arranging chain 12 and the clamping and threshing conveyor chain 10 ensures that the rotation speeds of the three are consistent, which can effectively ensure the synchronous transportation of the upper and lower parts of the plant.

The power output shaft of the above-mentioned header angle gear transmission 53 is also connected to the Fuhe angle gear transmission 61 through a chain drive, and the power output shaft of the Fuhe angle gear transmission 61 is in transmission connection with the driving wheel of the Fuhe chain 6 to Drive the Fuhe chain 6 to rotate.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: Modifications to the technical solutions recorded in the foregoing embodiments, or equivalent replacements of some or all of the technical features; these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention. It should be covered in the scope of the claims and specification of the present invention.

Claims

A top-mounted bending and half-feeding combine harvester includes a chassis, a cutting platform, and an engine that drives the chassis to move. The cutting platform is provided with a supporting mechanism, a cutter mechanism, and a clamping mechanism driven by the engine. The bending and conveying mechanism, the threshing drum and the grain collecting mechanism are characterized by:

The clamping and bending conveying mechanism includes a clamping and threshing conveying chain, a bending chain, and a grass-rowing chain with consistent running speeds;

The bending chain is provided on one side of the entrance of the threshing drum, and the running track of the bending chain is in the horizontal plane. The bending chain includes a bending driving wheel, a first bending driven wheel, and a second bending chain. Bending the driven wheel, the lower bottom plate of the bending chain and the upper cover plate of the bending chain. The lower bottom plate of the bending chain is provided with the bearing seat of the first bending driven wheel and the mounting shaft of the second bending driven wheel. The axis of the bent driven wheel is installed downward through the bearing seat. The second bent driven wheel is fitted with rolling bearings and then assembled on the mounting shaft. The chain plates of the bending chain are evenly distributed with bending fingers, and the chain of the bending chain bypasses The bending driving wheel, the first bending driven wheel and the second bending driven wheel; the running track of the bending finger between the first bending driven wheel and the second bending driven wheel is close to the supporting grain of the supporting mechanism The running track of the bending finger between the bending driving wheel and the second bending driven wheel is close to the entrance end surface of the threshing drum;

The running track of the clamping and threshing conveyor chain is located in a vertical plane. The clamping and threshing conveyor chain includes a running rail, a driven wheel of the clamping and threshing conveyor chain and a driving wheel of the clamping and threshing conveyor chain. The chain plate is provided with vertical clamping sprocket, the front side of the clamping threshing conveyor chain is provided with a front cover plate, and the rear side is provided with a rear side baffle, and the running rail is arranged on the upper part of the rear side baffle , A mounting sleeve is also provided at the left end of the rear baffle, the clamping and threshing conveyor chain driven wheel is installed in the mounting sleeve through a bracket, and a compression spring is provided between the bracket and the mounting sleeve; The clamping and threshing conveyor chain bypasses the driving wheel of the clamping and threshing conveyor chain, the running guide rail and the driven wheel of the clamping and threshing conveyor chain; a first bead is arranged above the clamping and threshing conveyor chain, and the first bead and the clamp The plant threshing channel is formed between the threshing conveyor chains;

A pressing plate is arranged on the rear and upper part of the rear side baffle of the clamping and threshing conveyor chain to increase the friction of plant threshing and forcing the plants to approach the threshing drum; the front and lower part of the front cover of the clamping and threshing conveyor chain is provided with a second pressing bar , The gap between the front cover plate of the clamping threshing conveyor chain and the second bead forms a channel for forcing the plants to maintain a vertical posture for threshing;

The running track of the grass row chain is located in the horizontal plane, and the grass row chain is arranged directly below the clamping and threshing conveyor chain. The upper and lower plates of the grass row chain are respectively provided above and below the grass row chain. A grass row driving wheel and a grass row driven wheel are arranged between the upper cover plate of the grass row chain and the lower bottom plate of the grass row chain. The grass row chain is wound around the grass row drive wheel and the grass row driven wheel. A number of rows of grass chain teeth are arranged on the board, and a grass chain channel barrier is arranged above the tooth tips of the grass chain teeth. One end of the grass chain channel barrier is bent forward and fixed on the grass supporting mechanism; The upper cover plate of the grass chain is fixedly installed on the lower bottom plate of the grass chain, and the gap between the front edge of the upper cover plate of the grass chain and the rail of the grass chain channel forms a channel for the grass chain teeth to pull plants;

The cutting knife mechanism includes a cutting knife arranged on a cross beam of the cutting knife, and the cutting knife is arranged directly below the bending chain and the grass arranging chain.
The top-mounted bending half-feeding combine harvester according to claim 1, characterized in that:

The supporting grass mechanism includes a supporting grass top plate, a supporting grass bottom plate, and a supporting grass chain arranged between the supporting grass top plate and the supporting grass bottom plate, and a plurality of supporting grass fingers are arranged on the chain plate of the supporting grass chain, and The supporting structure also includes a supporting channel baffle located above the supporting fingertip of the supporting chain;

The first battens, the second battens and the grass chain channel rails are all fixed on the buttress bottom plate.
The top-mounted bending half-feeding combine harvester according to claim 1, characterized in that:

The header includes a left side guard plate and a right side guard plate arranged vertically, a vertical middle partition is arranged between the left side guard plate and the right side guard plate, and the left side guard plate passes through the collector. The grain drum is connected to the middle partition, and the middle partition is connected to the right side guard plate through the upper cover plate of the bending chain, the lower bottom plate of the bending chain, and the mounting plate; the left side guard plate and the middle partition form an accommodation In the threshing drum box of the threshing drum, the bottom of the threshing drum box is provided with a grain gathering spiral auger channel, and the grain gathering spiral auger is arranged in the channel; the grain gathering spiral auger is close to the left side guard plate The grain throwing and conveying channel is connected at the channel entrance;

The left end of the shaft of the grain collecting screw auger is provided with a throwing bucket, which is located at the bottom of the grain throwing and conveying channel, and the left end of the shaft of the grain collecting screw auger is connected to the left end of the grain throwing and conveying channel. The side plate is rotationally connected, and the right end passes through the middle partition and is rotationally connected with the middle partition;

The left end of the rear side baffle plate that clamps the threshing conveyor chain extends out of the left side guard plate, the right end is connected with the middle partition, and the rear side baffle is arranged at the front end of the threshing drum box and parallel to the rotating shaft of the threshing drum;

The left side guard plate and the right side guard plate are connected by the lower bottom plate of the grass row chain, the left side guard plate is provided with a gap for the installation of the grass row chain, and the lower plate of the grass row chain is provided There are reinforced connecting plates, which are connected on the upper and lower sides of the gap; the cutter beam is arranged directly under the grass chain, and is respectively connected with the left side guard plate and the right side guard plate.
The top-mounted bending semi-feeding combine harvester according to claim 3, characterized in that:

The gap between the lower edge of the rear side baffle plate that clamps the threshing conveyor chain and the grain collecting drum forms a channel for cleaning and discharging the threshing plant debris and sundries.
The top-mounted bending semi-feeding combine harvester according to claim 3, characterized in that:

The header is installed on the chassis by a lifting mechanism, the lifting mechanism includes a support seat fixed on the chassis, and a connecting piece fixed on the header;

The supporting seat includes two vertically arranged guide rails, a first connecting beam and a second connecting beam are arranged from top to bottom between the two guide rails, and an assembly seat is provided on the second connecting beam, and the assembly seat is A screw is rotatably connected, and the lower end of the guide rail is fixedly connected to the chassis through a connecting plate;

The connecting piece includes two vertically arranged positioning plates, the two positioning plates are fixedly connected to the header, and a first crossbar and a first crossbar and a first crossbar are horizontally arranged from top to bottom between the two positioning plates. Two cross bars, the middle of the first cross bar is provided with an adjusting nut adapted to the screw rod, and the middle of the second cross bar is provided with a guide sleeve for the screw to pass through; the first cross bar The ends of the second cross bar and the second cross bar both penetrate through the two positioning plates, and a guide wheel is sleeved on the outer periphery of the end of the first cross bar and the second cross bar, and the guide wheel is inserted in the guide rail .
The top-mounted bending half-feeding combine harvester according to claim 5, characterized in that:

A transmission is provided on the chassis, and the input shaft of the transmission is drivingly connected with the output shaft of the engine;

The transmission includes a first output shaft, a second output shaft, and a third output shaft. The first output shaft and the second output shaft are in transmission connection with the driving wheels on the chassis. The third output shaft is The joint is in transmission connection with the angle gearbox of the header provided on the header;

A hexagonal shaft is connected to the end of the universal joint away from the third output shaft, and a hexagonal bushing connected to the hexagonal shaft is provided in the header angle gearbox, and the hexagonal bushing forms the header angle gear The power input shaft of the gearbox, and the hexagonal shaft sleeve is connected with the power output shaft of the header angle gear transmission through a bevel gear.
The top-mounted bending half-feeding combine harvester according to claim 6, characterized in that:

The clamping and bending conveying mechanism includes a bending angle gear transmission, and the power input shaft of the bending angle gear transmission is connected with the power output shaft of the header angle gear transmission through a chain drive;

The bending angle gear transmission is provided with a first power output shaft, a second power output shaft and a third power output shaft which are connected to the power input shaft of the bending angle gear transmission. The output shaft is coaxial with the threshing drum, and the first power output shaft is connected to the threshing drum through a first sleeve for driving the threshing drum to rotate, and the shaft of the grain collection screw auger is connected to the first The shaft sleeve is connected by chain drive;

The driving wheel of the clamping and threshing conveyor chain is installed on the second power output shaft, and the third power output shaft is drivingly connected with the bending driving wheel.
The top-mounted bending half-feeding combine harvester according to claim 7, characterized in that:

The cutter mechanism includes a cutter gearbox, the first bending driven wheel is fixedly connected to the power input shaft of the cutter gearbox through a second bushing downward in the axial direction, and the power output on the top of the cutter gearbox is The shaft is fixedly connected with the grass discharging driving wheel, and the power output shaft at the bottom of the cutting knife gearbox is fixedly connected with a driving cam, and the driving cam is used to drive the cutting knife to move.