CN2862655Y

CN2862655Y - Rethreshing device for rice or wheat combine harvester

Info

Publication number: CN2862655Y
Application number: CNU2005201342445U
Authority: CN
Inventors: 陈德俊; 傅美贞; 徐锦大; 王益志; 楼妙良
Original assignee: Jinhua Polytechnic
Current assignee: Jinhua Polytechnic
Priority date: 2005-12-26
Filing date: 2005-12-26
Publication date: 2007-01-31
Anticipated expiration: 2015-12-26

Abstract

The utility model relates to a tailings re-threshing device applicable for the full feeding rice and wheat combine harvester. The utility model aims at the defect of current tailings re-threshing device used on the existing full feeding rice and wheat combine harvester that the threshing effect is poor, the re-threshing device is easy to be jammed and the seed cracking ratio is high, the utility model provides a rice and wheat combine harvester re-threshing device that can fully thresh the tailings and avoid from the jam of re-threshing device and reduce the seed fragment. The utility model comprises a drill, a re-threshing cylinder, a grid concave plate screen, a lower shell, a shaft, a sliding plate and an upper shell. Wherein, the shaft is fixed on the frame, one end of the shaft installs with the driving chain wheel, the body of the re-threshing cylinder arranges spiral vane, plate tooth and grass discharging vane, the plate tooth is arranged along the circle direction of the cylinder body, the grid concave plate screen is arranged under the re-threshing cylinder, the lower shell under the grid concave plate screen is connected with the sliding plate, the upper shell is on the upper of the re-threshing cylinder, the right end of the grid concave plate screen has grass discharging outlet, the lift end of the re-threshing cylinder is connected with martial sending drill.

Description

The rice/wheat combine surplus rethreshing device of mixing

Technical field

The utility model belongs to agricultural machinery technological field, particularly a kind of assorted surplus rethreshing device of rice/wheat combine that is applied on the full feeding rice wheat combine.

Background technology

During the full feeding rice and wheat combine operation, enter shaking shoe through threshing cylinder threshing and the mixture from grid-type concave sieve, separating, form, under blower fan and vibratory sieve effect, make a seed from mixture, separate and enter the flat spin conveyer that is positioned under the vibratory sieve and send into the collection tanker by grain seed, broken cane and clever shell.But also some is fully by threshing and also have the small ear head of ripe seed, short cane and blade of grass, because of volume is bigger, is pulled to the latter half of and tail sheet of vibratory sieve and falls.If enter the collection tanker after they enter seed flat spin conveyer, the seed cleannes will be descended, the seed percentage of impurity improves.Therefore, rear portion at combine seed flat spin conveyer, the assorted surplus flat spin conveyer of collecting small ear and short cane etc. need be set, and they are delivered to assorted surplus rethreshing device, hit repeatedly and rub at plate tooth and concave grate, again fall into vibratory sieve once more after the threshing, under the effect of wind-force and sieve, carry out secondary and clean, thereby guaranteed the seed cleannes.On existing caterpillar band self-propelled all feeding-in combine, because of the not assorted surplus rethreshing device of former design, the producer that has has disposed by the simple and easy rethreshing device that cutter tooth and stamped sieve constitute is installed on the auger blade, this rethreshing device helical blade transporting velocity is fast, it exists assorted surplus threshing weak effect, the weak point that rethreshing device easily stops up and the seed damage rate is high; Other has producer to dispose with the work assorted surplus rethreshing device of parts of centrifugal fan, because fan propeller is short to assorted surplus action time, it also exists the threshing weak effect, when assorted surplus water content is higher, and the susceptible to plugging weak point of threshing fan.

Summary of the invention

The utility model is at the existing threshing weak effect of the existing assorted surplus rethreshing device that uses on the full feeding rice wheat combine, rethreshing device easily stops up and the high weak point of seed damage rate, a kind of assorted surplus abundant threshing that makes is provided, can avoids the assorted surplus rethreshing device of rice/wheat combine of rethreshing device obstruction and minimizing seed damage.

The technical scheme that the assorted surplus rethreshing device of the utility model rice/wheat combine adopts is finished in the following way: the assorted surplus rethreshing device of rice/wheat combine comprises screw feeder, re-threshing roller, grid-type concave sieve, lower encioser, axle, slide plate and upper encloser.Wherein, axle is fixed on the frame, one end of axle is equipped with drive sprocket, on the cylindrical shell of re-threshing roller, be provided with have conveying, helical blade, plate tooth and the Lysimachia sikokiana blade of threshing and removing cane function, the plate tooth is arranged in the shape of a spiral along the cylindrical shell circumferencial direction, the grid-type concave sieve is housed below the re-threshing roller, it and re-threshing roller are formed rethreshing device, gap between them is 5 to 20mm, the lower encioser and the slide plate of grid-type concave sieve below join, re-threshing roller top is upper encloser, and the right-hand member of grid-type concave sieve has straw outlet, and re-threshing roller left end and feeding screw feeder join.

During work, outside under the drive power source, drive sprocket makes the re-threshing roller high speed rotating, fall into the screw feeder of the assorted excess material of horizontal tailing auger from vibratory sieve rear portion and tail sheet through arranged perpendicular, enter rethreshing device by the upper encloser sealing, the helical blade of the re-threshing roller left end excess material of will mixing is carried to the right, under the diaphragm plate effect on plate tooth on the re-threshing roller and the grid-type concave sieve, assorted excess material constantly is subjected to impacting rubbing in the upset, seed is taken off from small ear, short cane is further pulverized, and separates from grid-type concave under centrifugal action, and returns to sorting screen by lower encioser through slide plate and clean.Not pulverized cane under the effect of the plate tooth that line is in the shape of a spiral arranged, is pushed to rethreshing device at right-hand member, and under the effect of Lysimachia sikokiana blade, from the straw outlet of grid-type concave sieve right-hand member, enter sorting screen, under vibratory sieve and wind-force effect, finally be discharged from outside the machine.

The utility model is compared with the existing assorted surplus rethreshing device that uses on the full feeding rice wheat combine, and it is abundant to have an assorted surplus threshing, can avoid rethreshing device to stop up and reduce the characteristics of seed damage.The utility model is particularly suitable as a kind of assorted surplus rethreshing device of rice/wheat combine that is applied on the full feeding rice wheat combine.

Description of drawings

Fig. 1 is the structural representation of the assorted surplus rethreshing device of rice/wheat combine.

Fig. 2 is the A-A cutaway view of Fig. 1.

Fig. 3 is the B-B cutaway view of Fig. 1.

Embodiment

Contrast accompanying drawing below, the utility model is described in further detail by embodiment.

With reference to accompanying drawing 1 and accompanying drawing 3, the assorted surplus rethreshing device of a kind of rice/wheat combine comprises screw feeder 3, re-threshing roller 5, grid-type concave sieve 6, lower encioser 7, axle 11, slide plate 12 and upper encloser 13, axle 11 is fixed on the frame 2 by two rolling bearings 10, one end of axle 11 is equipped with drive sprocket 1, is provided with helical blade 4, plate tooth 8 and Lysimachia sikokiana blade 9 on the cylindrical shell of re-threshing roller 5; Plate tooth 8 is arranged in the shape of a spiral along the cylindrical shell circumferencial direction, its helical pitch be helical blade 4 helical pitch 4/5; The grid-type concave sieve of being made by steel wire and diaphragm plate 15 6 is housed below the re-threshing roller 5, it and re-threshing roller 5 are formed rethreshing device, both gaps are 10mm between them, wherein diaphragm plate 15 has the function of upset, the separating area of grid-type concave sieve 6 is big, can avoid rethreshing device to stop up and the minimizing seed damage; The lower encioser 7 that grid-type concave sieves 6 belows joins with slide plate 12; Re-threshing roller 5 tops are upper encloser 13, and the right-hand member of grid-type concave sieve 6 has straw outlet 14; Re-threshing roller 5 left ends and feeding screw feeder 3 join.

Claims

1, a kind of rice/wheat combine surplus rethreshing device of mixing, it is characterized in that the assorted surplus rethreshing device of this a kind of rice/wheat combine comprises screw feeder (3), re-threshing roller (5), grid-type concave sieve (6), lower encioser (7), axle (11), slide plate (12) and upper encloser (13), axle (11) is fixed on the frame (2) by two rolling bearings (10), on the cylindrical shell of re-threshing roller (5), be provided with helical blade (4), plate tooth (8) and Lysimachia sikokiana blade (9), plate tooth (8) is arranged along the cylindrical shell circumferencial direction, grid-type concave sieve (6) is housed below the re-threshing roller (5), gap between re-threshing roller (5) and the grid-type concave sieve (6) is 5 to 20mm, the lower encioser (7) of grid-type concave sieve (6) below joins with slide plate (12), re-threshing roller (5) top is upper encloser (13), the right-hand member of grid-type concave sieve (6) has straw outlet (14), and re-threshing roller (5) left end and feeding screw feeder (3) join.

2, the assorted surplus rethreshing device of rice/wheat combine according to claim 1 is characterized in that plate tooth (8) arranges in the shape of a spiral along the cylindrical shell circumferencial direction, its helical pitch be helical blade (4) helical pitch 4/5.

3, the assorted surplus rethreshing device of rice/wheat combine according to claim 1 is characterized in that grid-type concave sieves (6) and made by steel wire and diaphragm plate (15).

4, the assorted surplus rethreshing device of rice/wheat combine according to claim 1 is characterized in that at an end of axle (11) drive sprocket (1) being housed.