THRESHING DEVICE (VERSIONS) Russian patent published in 2015 - IPC A01F12/18 A01F12/24 

FIELD: agriculture.

SUBSTANCE: threshing device consists of a drum with teeth working elements or a universal drum provided with teeth working elements and corrugated bars fixed in working or non-working position, and the grate-type concave provided with detachable extreme cross plates with trapezoidal protrusions extending between the teeth of the drum. The trapezoidal protrusions of the detachable plates are located with the pitch equal to double pitch of the teeth traces of the drum. The protrusions of the rear detachable plate are shifted relative to the protrusions of the front detachable plate by the pitch size of the teeth traces of the drum.

EFFECT: reduction of energy intensity of the technological process and grain damage during threshing rice.

6 cl, 13 dwg