SCREENING APPARATUS OF COMBINE

摘要

PROBLEM TO BE SOLVED: To improve the screening performance of a screening apparatus and the rejection ratio of rachis-branch and reduce the size of the body of a combine by decreasing the volume occupied by the screening apparatus. SOLUTION: The screening apparatus of a combine is provided with an unripe grain conveyor 23 and an unripe grain returning conveyor 14 to return and transport the screened unripe grains to the screening part. An unripe grain returning apparatus 10 having an unripe grain treating cylinder 11 is placed near the delivery end of the unripe grain returning conveyor 14 and the unripe grain treating cylinder 11 is driven by transmitting the driving force of the screening apparatus such as a winnower or a ripe grain conveyor.