CLEANING MECHANISM OF GRAIN HARVESTER Russian patent published in 2003 - IPC

FIELD: agricultural engineering. SUBSTANCE: proposed cleaning mechanism includes shaking board, scalping and dressing shoes and drive crankshaft. Crankshaft of drive crankshaft are arranged at angle of 180^o, and connecting rods are fitted on cranks. Some connecting rods are connected to shaking boards and others are connected to scalping shoe. Second drive shaft is installed vertically and is provided with crank connected with dressing shoe. Vertical shaft is connected with drive crankshaft by belt drives. With harvester engine operating, movement is transmitted to driven crankshaft. Connecting rods fitted on cranks of driven shaft transmit movement to shaking board and scalping shoe. Forces of inertia at their movement to opposite sides are equalized. Simultaneously, movement is transmitted from vertical shaft to dressing shoe executing rotation. Inertia forces arising at circular movement of dressing shoe are equalized by counterweight. Invention provides reduction of dynamic loads and vibration of harvester frame. EFFECT: improved reliability of harvester in operation. 2 dwg