CN101653073A - Segmented selecting device for combine harvester - Google Patents

Abstract

A segmented selecting device for combine harvester comprises a upper shaking plate, a lower shaking plate, a selecting chamber bottom shell, a grain screw, an impurity screw, a grain slide plate, an impurity slide plate, a tail cover, a tail sieve, a cleaning upper sieve, a casing, a cleaning lower sieve, a back separating concave, a separating concave, an axial-flow roller, a front roller, a frame and a centrifugal blower fan. The upper shaking plate is provided at the back lower part of the axial flow roller and the back separating concave; The lower shaking plate is provided at the right lower part of the axial-flow roller and the separating concave; the upper shaking plate and the lower shaking plate are staggered in the front-back direction; furthermore the upper shaking plate is staggered backwards compared with the lower shaking plate, the back separating concave and the separating concave are equipped at the back lower part of the axial-flow roller, the front roller is providedin front of the axial-flow roller; the centrifugal blower fan is positioned in front of the separating chamber bottom shell; the casing is equipped to the upper plane of the frame; and the tail coveris equipped at the back end of the casing. The combine harvester which adopts the segmented selecting device can fully exert the potential of the threshing device, increases the operation efficiencyand effectively prevents the grain loss caused by falling to the ground in the selecting process.

Description

A kind of segmented selecting device for combine harvester

Technical field

The invention belongs to agricultural mechanical field, especially a kind of segmented selecting device for combine harvester.

Background technology

The mixture that existing combine sheller unit forms and is successively carried mixture after separating notch board and dropping to shuttle board or other conveying plants to cleaning the top sieve front end.Clean and from front to back mixture is cleaned successively after top sieve accesses mixture.In the normal harvest phase and be no more than under the situation of specified feed quantity, the service behaviour of sorting screen is better.But combine gathers in when exceed standard feed quantity or cereal moisture percentage are higher and tends to occur mixture in the threshing and produce to pile up all the time from front to back on sorting screen surface, causes grain can't separate from mixture, produces grain and lands loss.Its reason: the feed quantity that exceeds standard increases the compass screen surface upper thickness, and the air-flow under the sorting screen surface is difficult to hold up blocked up material bed; The mixture moisture content is too high, and its original floating velocity is increased, and the air-flow under the sorting screen surface is difficult to hold up bigger material bed of humidity.

Result of the above problems is at present: control cereal enters the total amount in the threshing chamber, avoids the higher grain harvest of moisture content.Or reduce operating speed in this case; Also there is the rotating speed that increases former cleaning fan that its compass screen surface overdraught speed is raise; The lengthening sorting screen surface is also arranged, prolong mixture and on compass screen surface, pass through the path.Prevent to produce grain in the watering and separation procedure and land loss.But the result who does like this, the one, reduced the operating efficiency of combine; The 2nd, the air velocity that raises can blow out grain outside the machine; The 3rd, the compass screen surface back segment gas velocity that prolongs is spent the low mixture of having piled up that is difficult to hold up.

Summary of the invention

The object of the present invention is to provide a kind of potential that can give full play to the combine sheller unit, prevent effectively in the watering and separation procedure that grain lands loss, the combine segmented cleaning plant that operating efficiency is high.

The present invention is achieved through the following technical solutions above-mentioned purpose, and this segmented cleaning plant comprises: go up shuttle board, following shuttle board, cleaning room drain pan; the seed screw feeder, tailing auger, seed slide plate; assorted surplus slide plate, hood, tail sheet; clean top sieve, casing is cleaned down sieve; notch board is separated in the back, separates notch board, axial-flow type drum; front roll, frame, centrifugal blower.The back lower place at axial-flow type drum and back separation notch board is provided with shuttle board; under axial-flow type drum and the separation notch board shuttle board is set down; last shuttle board and the front and back dislocation of following shuttle board; and last shuttle board shuttle board down misplaces backward; centrifugal blower is positioned at cleaning room drain pan the place ahead and is installed in frame; the seed screw feeder; tailing auger is installed in the cleaning room drain pan; the seed slide plate; assorted surplus slide plate; tail sheet; clean top sieve and clean down screen banks and become screen box to be installed in the frame; casing is installed on the frame on the plane; hood is installed in casing rear end; notch board is separated in the back; separate notch board and be installed in the axial-flow type drum back lower place, front roll is in axial-flow type drum the place ahead.

Last shuttle board and the front and back dislocation of following shuttle board, the middle section position of top sieve is being cleaned in the orthographic projection of last shuttle board end, and the front-end position of top sieve is being cleaned in the orthographic projection of following shuttle board end.

The invention has the beneficial effects as follows: adopted combine segmented cleaning plant, can give full play to the potential of combine sheller unit, improved operating efficiency, prevented that effectively grain in the watering and separation procedure lands loss.

Description of drawings

Fig. 1 is a kind of combine segmented of the present invention cleaning plant structural representation.

Embodiment

As shown in Figure 1: combine segmented cleaning plant comprises shuttle board 1, following shuttle board 2, cleaning room drain pan 3; seed screw feeder 4, tailing auger 5, seed slide plate 6; assorted surplus slide plate 7, hood 8, tail sheet 9; clean top sieve 10, casing 11 is cleaned down sieve 12; notch board 13 is separated in the back, separates notch board 14, axial-flow type drum 15; front roll 16, frame 17, centrifugal blower 18.The back lower place of axial-flow type drum 15 and back separation notch board 13 is provided with shuttle board 1 in the combine sheller unit; under axial-flow type drum 15 and the separation notch board 14 shuttle board 2 is set down; last shuttle board 1 and the dislocation of following shuttle board 2 front and back; and last shuttle board 1 shuttle board 2 down misplaces backward; and guarantee to go up the orthographic projection of shuttle board 1 end at the middle section position of cleaning top sieve 10; the orthographic projection of following shuttle board 2 ends is at the front-end position of cleaning top sieve 10; centrifugal blower 18 and cleaning room drain pan 3 are installed in the frame 17; centrifugal blower 18 is positioned at cleaning room drain pan 3 the place aheads; seed screw feeder 4; tailing auger 5 is installed in the cleaning room drain pan 3; seed slide plate 6; assorted surplus slide plate 7; tail sheet 9; clean top sieve 10 and clean down sieve 12 composition screen boxs and be installed in the frame 17; casing 11 is installed in plane on the frame; hood 8 is installed in casing 11 rear ends; notch board 13 is separated in the back; separate notch board 14 and be installed in axial-flow type drum 15 back lower places, front roll 16 is in axial-flow type drum 15 the place aheads.This segmented cleaning plant can obviously reduce combine mixture thickness on sorting screen surface when the higher harvesting of exceed standard feed quantity or cereal moisture percentage, can effectively grain be separated from mixture, prevents to produce grain and lands loss.

During duty, cereal enters sheller unit by combine harvester cutting table, is transported to axial-flow type drum 15 through front roll 16, through axial-flow type drum 15, after separate under notch board 13 and the effect that separates notch board 14 and finish the threshing separation process.In the threshing separation process, stalk outside the straw outlet discharge machine of threshing device, seed, clever shell and crushing straw then by after separate notch board 13 and separate notch board 14 and be divided in two parts and drop on shuttle board 1 and the following shuttle board 2.The mixture of falling down on the shuttle board 2 moves on following shuttle board 2 backward, drops to the leading portion of cleaning top sieve 10 behind end; And the mixture of falling on the shuttle board 1 moves on last shuttle board 1 backward, drops to the stage casing of cleaning top sieve 10 behind end.Like this; just successively being divided into front and back two parts at the enterprising row filter of compass screen surface in the former cleaning plant to the mixture of cleaning the conveying of top sieve 10 front ends; clever shell in this process in the mixture and crushing straw are through centrifugal blower 18; clean top sieve 10; tail sheet 9; clean down sieve 12 actings in conjunction from casing 11; in the cavity volume that hood 8 and frame 17 formed outside the discharge machine; seed enters seed screw feeder 4 through seed slide plate 6 and enters tanker; the assorted surplus slide plate 7 of assorted surplus warp enters tailing auger 5 and takes off again; owing to clean respectively for two sections before and after mixture is divided into; just can adapt to the super feed quantity and the operation under the cereal moisture percentage condition with higher of combine, effectively improve the operating efficiency of machine.

Claims (2)

1. a segmented selecting device for combine harvester mainly comprises: go up shuttle board (1); following shuttle board (2); cleaning room drain pan (3); seed screw feeder (4); tailing auger (5); seed slide plate (6); assorted surplus slide plate (7); hood (8); tail sheet (9); clean top sieve (10); casing (11); clean down sieve (12); notch board (13) is separated in the back; separate notch board (14); axial-flow type drum (15); front roll (16); frame (17); centrifugal blower (18); it is characterized in that: the back lower place at axial-flow type drum (15) and back separation notch board (13) is provided with shuttle board (1); under axial-flow type drum (15) and the separation notch board (14) shuttle board (2) is set down; last shuttle board (1) and the dislocation of following shuttle board (2) front and back; and last shuttle board (1) shuttle board (2) down misplaces backward; centrifugal blower (18) is positioned at cleaning room drain pan (3) the place ahead and is installed in frame (17); seed screw feeder (4); tailing auger (5) is installed in the cleaning room drain pan (3); seed slide plate (6); assorted surplus slide plate (7); tail sheet (9); clean top sieve (10) and clean down sieve (12) and form screen box and be installed in the frame (17), casing (11) is installed in frame (17) and goes up on the plane, and hood (8) is installed in casing (11) rear end; notch board (13) is separated in the back; separate notch board (14) and be installed in axial-flow type drum (15) back lower place, front roll (16) is in axial-flow type drum (15) the place ahead.

2. a kind of segmented selecting device for combine harvester according to claim 1, it is characterized in that: go up shuttle board (1) and the dislocation of following shuttle board (2) front and back, the orthographic projection of last shuttle board (1) end is at the middle section position of cleaning top sieve (10), and the orthographic projection of following shuttle board (2) end is at the front-end position of cleaning top sieve (10).

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