GRAIN CLEANER Russian patent published in 2001 - IPC

FIELD: agricultural engineering. SUBSTANCE: engineering. grain cleaner has screen concave in cross-section with convex lips connected to side edges of screen. Shaft of machine is arranged at angle to horizontal plane and is connected with frame by means of bearing units. Oscillatory motion drive is furnished with induction motor. Screen is rigidly coupled with shaft. pan for through fraction is secured on shaft by means of bearing units and is coupled with screen by mechanism providing balancing of inertia forces and converting amplitudes of oscillations. Axle of mechanism is rigidly secured in frame. Chute for tails fraction is secured on frame from side of screen tails edge. EFFECT: improved reliability of grain cleaner and increased capacity of machine owing to balancing of inertia forces. 3 dwg