| 摘要 |
PROBLEM TO BE SOLVED: To provide a supporting device for a working vehicle allowing easy switching from a vehicle movable state by ground of a roller to a state of allowing a vehicle to perfectly float, and eliminating troublesome operations, such as positional adjustment in installation of a lumber board and loading/unloading of the lumber board, which are required in a well-known vehicle (Fig. 28 (not shown in the figure)) constituted so that the vehicle can be moved by grounding the roller of a jack device with the roller along with a wheel. SOLUTION: The roller 6 grounded along with the wheel 11 of the vehicle and a ground plate 6 (substitutes therefor may be used) for floatingly supporting the vehicle are installed in four portions, front and rear, and right and left, of a vehicle body by a jack so as to be vertically moved, and the roller and the ground plate can be selectively grounded according to the purpose of use. COPYRIGHT: (C)2006,JPO&NCIPI
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