| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable leg structure of a working vehicle capable of smoothly moving right and left inner pipes with respect to an outer pipe without generating any set-in of the outer pipe even during the maximum leg opening, and smoothly changing the spacing between crawlers. SOLUTION: The variable leg structure of the working vehicle comprises an outer pipe 7o which is provided along the width direction of a center frame 7 and has a sliding part 2b having an inside diameter face of the diameter smaller than that of an inside diameter face 7o1 at a center part on an end thereof, and inner pipes 8r, 9r, 8l, 9l which are fixed to track shoes 4l, 4r, and reciprocated in the outer pipe 7o while sliding on the inside diameter face of the sliding part sb to move the track shoes 4l, 4r in the width direction. COPYRIGHT: (C)2006,JPO&NCIPI
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