The article raises the issue of climate warming without loss of harvesting dry short-stalked crops will increase, and requires an urgent technological and technical solution. Research aimed at the development of a device installed in an inclined chamber, providing a reduction in grain losses during harvesting of dry short-stalked grain mass, is relevant and of great economic importance. The aim of the study was to increase the efficiency of harvesting dry short-stalked crops due to the uniform distribution of threshed grain mass supplied to the combine harvester. And the scientific hypothesis of the study was to increase the efficiency of a single-drum combine harvester by threshing dry short-stalked breads, by ensuring a uniform layer of grain mass entering the local government. The results showed that the threshing of grain increases due to the uniform distribution of mass depending on the length of the discrete part of the corrugation. The results of the experiment are obtained.