KEY SELECTION UNIT FOR CORNCOBS THRASHING Russian patent published in 2020 - IPC A01F11/06 

FIELD: machine building.

SUBSTANCE: apparatus includes a conveying roll with a helical winding for moving and ejecting cobs from the threshing area, a threshing roller with projections of a curvilinear shape and a loading device. Rollers are located parallel and rotate in one direction, in the direction opposite to projection direction of projection. Projections of curvilinear shape are made in form of sections consisting of spring-loaded keys, besides, each next section is installed with displacement relative to previous one, with possibility of formation of spiral helical surface on threshing roll.

EFFECT: invention provides increase in the throughput capacity of the apparatus, while reducing damage to the selection material.

1 cl, 4 dwg