DOUBLE-DRUM THRESHING DEVICE Russian patent published in 2014 - IPC A01F12/26 

FIELD: agriculture.

SUBSTANCE: double-drum threshing device comprises a concave with the first threshing drum, an intermediate grid with an intermediate beater, a concave with a second threshing drum, a guide grid with a concave beater. The intermediate and the concave beaters are equipped with a finger mechanism. The rods of the intermediate and the guide grids in longitudinal-vertical plane are made by the third-order algebraic curve x³=y²·(D-x). The grain separation zone is activated through the intermediate and guide grids of the intermediate and concave beaters.

EFFECT: grain crushing is reduced, carrying capacity of the device is increased.

1 dwg