| 摘要 |
PROBLEM TO BE SOLVED: To provide a combine harvester that safely retreats and travels in the case of some kind of abnormality related to speed change or steering operation detecting means and controllers and continues a threshing operation, etc. SOLUTION: The combine harvester includes: the first controller 200 that forms control information according to input information on the basis of detection information from the first speed change operation detecting means 141a and the first steering operation detecting means 151a and controls a hydraulic continuously variable transmission 40 for traveling and a hydraulic continuously variable transmission 50 for steering; and the second controller 300 that forms control information according to input information on the basis of detection information of the second speed change operation detecting means 141b and the second steering operation detecting means 151b. The input information is mutually compared with the control information and each operation state is determined. When at least one of the input information and the control information is not coincident, the hydraulic continuously variable transmissions for traveling and steering are controlled so as to restrict a traveling speed and the drive of each operation part is restricted. COPYRIGHT: (C)2010,JPO&INPIT
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