| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems of a conventional combine harvester comprising the impossibility to attain a speed difference between the running speeds of the forward motion and backward motion when a hydraulic speed changer and a subsidiary speed changer are operated to the maximum speed positions and the impossibility to perform an efficient work in the gyration traveling by increasing the backward motion speed in high efficiency and improving the work efficiency as a whole. SOLUTION: The traveling transmission device of the combine harvester transmits the rotational power of an engine 1 to a travel mission device 3 from a normal/reverse rotation changing device 2 through a transmission path F furnished with a forward-side one-way clutch 8 and a transmission path R furnished with a backward-side one-way clutch 9 to drive the traveling device 5 of the vehicle body 4. These two transmission paths are provided with speed changing mechanisms to transmit the power at a high speed at the backward motion side compared with the forward motion side. COPYRIGHT: (C)2005,JPO&NCIPI
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