| 摘要 |
PROBLEM TO BE SOLVED: To improve working efficiency and suppress damage to a crawler and generation of abnormal sound since an endless track type working vehicle is capable of smoothly moving to upstairs without a falling-down of a vehicle body to the front when going up to the tops of steps such as stairs, and easily turning in even a narrow place. SOLUTION: In the vehicle main body 1 having the crawler 7, a front side vehicle body supporting device 13 is provided. An elevating mechanism 14 constituting the front side vehicle body supporting device 13 is constituted of a supporting arm 14B connected to a vehicle body frame 3 with a pin via a bracket 14A and a hydraulic cylinder 14D for elevating and driving the supporting arm 14B in directions of arrows A and B. A rotating body supporting part 15 is provided on a distal end side of the supporting arm 14B. A grounding rolling element 16 constituted of a spherical body is rollably fitted to the rotating body supporting body 15. COPYRIGHT: (C)2006,JPO&NCIPI
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