| 摘要 |
PROBLEM TO BE SOLVED: To provide a combine harvester improved in gear shifting operability by smoothly transferring to a different turning condition and performing travelling shift with auxiliary gear sifting operation and gear shifting operation of a variable motor of a hydraulic continuously variable transmission. SOLUTION: A main shifting lever 60 for shifting a variable pump 29a of the hydraulic continuously variable transmission 29, an auxiliary shifting lever 62, and a steering operation tool 9 for turning a car body 2 are provided. Speed of an axis gear 52 of one of a right and a left sides is reduced to turn on the basis of the turning operation of the steering operating tool 9, and the axis gear 52 of one of the right and the left sides is reversely turned on the basis of the spinning operation of the steering operating tool 9. Furthermore, the variable motor 29b of the hydraulic continuously variable transmission 29 is structured to be operated for shift to perform gear shifting operation of the auxiliary shifting gear 35 by the auxiliary shifting lever 62 and gear shifting operation of the variable motor 29b. COPYRIGHT: (C)2007,JPO&INPIT
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