Modernization of the thresher of a grain harvester

The article presents the results of laboratory studies of a modernized threshing device of a combine harvester. The change in the design of the thresher was carried out in order to change the parameters of air flows in the gap between the threshing drum and the concave deck. It is shown that the introduced design changes contribute to a better separation of grain from the straw grate of the separated material and prevent the reverse movement of air masses from the threshing gap between the thresher beaters.