Threshing device

Abstract

The invention provides a threshing device, wherein the attachments such as straws and the like attaching to the surface of a screen are peeled off and the obstruction of swing screening shelves is avoided, thereby improving the screening efficiency and the threshing efficiency.A scraper (82) equipped with a rim part (82a) for peeling off the attachments attaching to the surface of the screen (23) is arranged to freely reciprocate along the length direction of the screen (23).In addition, a plurality of scrapers (82) arranged on the front and rear screens (23) are formed integratedly with the single plate (81) arranged along the swing direction of the swing screening shelf (20) so as to form a cleaning part (80).The cleaning part (80) is arranged to freely reciprocate along the length direction of the screen (23).In addition, the rim part (82a) of the scraper (82) inclines toward the movement direction of the scraper (82) and protrudes toward the left and right sides of the single plate (81).

Description

technical field [0001] The present invention relates to a threshing device mounted on a combine harvester (combine) or the like. Background technique [0002] Conventionally, a threshing device has provided a swing screening shelf under a drum chamber having a threshing drum, and the swing screening shelf is swingable and has a plurality of sieves (sieve). [0003] In such a threshing device, the following problems occurred: a large amount of straw chips generated in the drum chamber fell to the swing screening shelf, blocking the leakage gap between the filter screens arranged on the swing screening shelf, reducing the the screening efficiency. [0004] In order to solve such a problem, as disclosed in patent document 1, the apparatus provided with the flat plate-shaped cleaning member for removing the straw chip|tips adhering to the screen surface is known. That is to say, on the flat plate along the swing direction of the swing screening shelf, a plurality of holes in t...

AI Technical Summary

Problems solved by technology

[0003] In such a threshing device, the following problems occurred: a large amount of straw chips generated in the drum chamber fell to the swing screening shelf, blocking the leakage gap between the filter screens arranged on the swing screening shelf, reducing the screening efficiency

[0007] That is, since this technique does not chip off the straw chips adhering to the surface of the sieve, the straw chips adhering to the surface of the sieve cannot be sufficiently removed.

[0008] Therefore, the straw chips falling from the drum chamber adhere to the surface of the screens and block the leakage gap between the screens, hindering the leakage of the grains, and the problem of reduced screening efficiency cannot be eliminated.

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