| 摘要 |
PROBLEM TO BE SOLVED: To provide a combine harvester which can use the power of an engine 21 to drive a threshing portion 4 as much as the power loss of a hydraulic speed change mechanism 107 and can easily improve the efficiency of a harvest work, the fuel cost of an engine 21, and the like. SOLUTION: This combine harvester, in which the hydraulic speed change mechanism 107 for transmitting the power of the engine 21 is disposed in a transmission case 23, is characterized by disposing a vehicle speed-synchronizing shaft 72 for synchronizing with a vehicle speed through the hydraulic speed change mechanism 107 to drive a reaping portion 8, further disposing a constant rotation shaft 71 for directly transmitting the driving force of the engine 21, and selecting either of the vehicle speed-synchronizing shaft 72 and the constant rotation shaft 71 to drive the reaping portion 8.
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