| 摘要 |
PROBLEM TO BE SOLVED: To enable a small turning radius of running crawler of a combine in lateral turning. SOLUTION: Left/right running crawlers 3 and 3 are wound on left/right driving sprockets 28 and 28, left/right forward rolling wheels 30 and 30, left/right intermediate rolling wheels 31 and 31, left/right backward rolling wheels 35 and 35, and left/right idling rollers 29 and 29. The left/right intermediate rolling wheels 31 and 31 are bridged before or after intermediate balancing bodies 36 and 36 separately from the other wheels to be constituted vertically movably like a seesaw. During lateral turning of the left/right running crawlers 3 and 3, the intermediate balancing bodies 36 and 36 are lifted down to lift down the left/right intermediate rolling wheels 31 and 31. COPYRIGHT: (C)2004,JPO
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