A threshing device for a combine harvester

Abstract

The invention discloses a threshing device of a combined harvester. The threshing device comprises a threshing barrel and a sieve plate. The sieve plate is matched with the threshing barrel, the threshing barrel comprises a barrel wall, a plurality of rows of threshing columns and first springs, the multiple rows of threshing columns are uniformly arranged along the whole barrel wall, and the adjacent threshing columns are connected with one another by the first springs; the threshing columns comprise static columns and movable columns, the static columns are fixedly arranged on the barrel wall, and the movable columns are axially hinged to the barrel wall; the movable columns comprise first wall outer portions and first wall inner portions, the first wall outer portions are positioned onthe outer side of the barrel wall, the first wall inner portions are positioned on the inner side of the barrel wall, the static columns comprise second wall outer portions and second wall inner portions, the second wall outer portions are positioned on the outer side of the barrel wall, and the second wall inner portions are positioned on the inner side of the barrel wall; the heights of protrusions of the first wall outer portions are higher than the heights of protrusions of the second wall outer portions; the first wall inner portions are separated from the second wall inner portions, andthe adjacent second wall inner portions which are positioned on upstream of the rotation directions are connected with one another by the first springs. The threshing device has the advantages that good threshing effects can be realized by the threshing device, and the threshing device cannot be easily jammed or damaged.

Description

technical field [0001] The invention relates to the field of harvesters, and in particular provides a threshing device of a combine harvester. Background technique [0002] Threshing is one of the important working steps of the combine harvester. After the crops enter the threshing mechanism, they are squeezed and rubbed between the threshing cylinder and the sieve plate to achieve threshing. The fallen seeds leak through the sieve plate and enter the storage room. The remaining branches after threshing) are discharged under the rotation of the threshing cylinder. In order to reduce the breakage and damage to the seeds during the threshing process, the patent application No. 201210452737.8 discloses a rice and wheat ear grain peeling structure for a harvester, which is tightly wrapped with rubber or silica gel on the outer circumference of the drum. Floor. However, under the high-intensity work of the threshing mechanism, the rubber or silica gel coating is easy to wear, w...

AI Technical Summary

Problems solved by technology

However, under the high-intensity work of the threshing mechanism, the rubber or silica gel coating is easy to wear, which affects the threshing effect and service life, and once there is a blockage between the threshing cylinder and the sieve plate, it will damage the threshing mechanism, the driving device that drives the threshing cylinder, etc. cause serious injury

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