| 摘要 |
PROBLEM TO BE SOLVED: To solve inconvenience that a step in a thickness direction is generated on a tooth base part joint surface of opposed division sprockets by thickness dispersion between the division sprockets, i.e., cast parts and an inner side surface of forked projection of a core metal buried in a traveling crawler is rotated together by the step in the hooked state, in a working vehicle forming a drive sprocket driving the traveling crawler by integrating division sprockets radially divided. SOLUTION: Side edges Ca, Ca and an outer peripheral edge Cb of the tooth base part 25b joint surface P of the division sprockets 25, 25 are chamfered. COPYRIGHT: (C)2006,JPO&NCIPI
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