| 摘要 |
PROBLEM TO BE SOLVED: To maintain the speed of a feed chain even at a low-speed farm work and to reduce power necessary for threshing by decreasing the thickness of a straw layer in a high-speed farm work. SOLUTION: The combine is provided with a separation input shaft 71 to transmit the driving force to a separation mechanism 60 of a thresher 4, a shaft 72 to drive a reaping part 8 synchronizing with the vehicle speed and a feed chain input shaft 50 to transmit the driving force to the feed chain 5. The combine is further provided with a speed varying mechanism 93 for the feed chain to change a rotation speed of the separation input shaft 71 according to the change of the rotation speed of the synchronizing shaft 72.
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