COMBINED HARVESTER, MECHANISM OF REPEATED THRESHING FOR COMBINED HARVESTER AND METHOD FOR SELECTIVE REPEATED THRESHING OF UNDERTHRESHING IN COMBINED HARVESTER

摘要

A system of repeated threshing for a combined harvester comprises a feeding mechanism for transporting underthreshing from a graincleaning section of the combined harvester to a unit for repeated threshing and a bypass which can be used for delivery of underthreshing by-passing the unit for repeated threshing. The unit for repeated threshing comprises a casing of the repeated threshing which at least partially encloses a rotor of the repeated threshing. The stated rotor and casing have interacting threshing elements, which provide full repeated threshing of the underthreshing delivered to the casing and also transporting the repeatedly threshed underthreshing from the outlet of the casing into a downloading channel leading to a grain-cleaning section of the combined harvester. The design of the feeding mechanism provides throwing the underthreshing into the inlet of the casing in the direction which is practically tangent to the rotatinal direction of the rotor. In order to bypass the unit for the repeated threshing, a deflector can be used. Said deflector blocks the inlet and baffles the underthreshing into a bypass channel which comes out to the downloading channel.