| 摘要 |
PROBLEM TO BE SOLVED: To relieve a shock at a turning start during non-work traveling or the like in a crawler traveling vehicle turning a machine body on the basis of intermittent operation of transmission clutches. SOLUTION: A combined harvester 1 is provided with a linear traveling power transmitting system synchronously transmitting traveling power inputted from a power source to right and left crawler driving shafts 16R and 16L, a turning power transmitting system 15 changing the traveling power by the transmission clutches C1-C4 and selectively transmitting the changed power to the right and left crawler driving shafts 16R and 16L, and a control part 70 intermittently operating the transmission clutches C1-C4 in response to a turning operation of a multi-lever 69. The control part 70 is provided with a continuous engagement mode for continuously engaging the transmission clutch C3, an inching engagement mode for intermittently engaging the transmission clutch C3, and an engagement mode changing means (a turning operation control) for changing the engagement modes in response to predetermined conditions. COPYRIGHT: (C)2003,JPO
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