| 摘要 |
PROBLEM TO BE SOLVED: To improve working performance during balancing adjustment of a workbench, compared to conventional cases. SOLUTION: This vehicle for high lift work is provided with a pressure oil supply destination change-over valve 56 which has a first change-over position 56a for supplying pressure oil passing through a third electromagnetic control valve 53 to an expansion cylinder 31 and a second change-over position 56b for supplying pressure oil passing through the third electromagnetic control valve 53 to a leveling actuator 34, and enables operation of the leveling actuator 34 by operation of a boom operation lever 81 in the state that the pressure oil supply destination change-over valve 56 is switched to the second change-over position 56b. When the state that the pressure oil supply destination change-over valve 56 can be switched to the second change-over position 56b is detected by a change-over state detector 94, a restriction release part 67 of a controller 60 releases operation restriction of a boom 30 performed by a restriction part 64 of the controller 60. COPYRIGHT: (C)2007,JPO&INPIT
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