| 摘要 |
PROBLEM TO BE SOLVED: To easily put a vehicle for high lift work in a ground boarding position in a short period of time. SOLUTION: The vehicle for high lift work 1 includes a hydraulic circuit 60 which consists of a boom side oil passage 65 communicating a hydraulic pump P with a turning motor BA3, a jack oil passage 66 branching off of the boom side oil passage 65 and communicating the hydraulic pump P with jack cylinders JA1-JA4, and a change over valve CHV capable of changing over to supply working fluid from the hydraulic pump P to a side of the boom side oil passage 65. A branch oil passage 84 capable of supplying working fluid to the jack cylinders JA1-JA4 branches off of a second auxiliary oil passage 83. The change over valve CHV is changed over to supply working fluid to the side of the boom side oil passage 65 to supply working fluid to the jack cylinders JA1-JA4 via the branch oil passage 84 to enable simultaneous operation of a boom 22 and a plurality of jacks 40 until the boom 22 and a plurality of the jacks 40 move from storage positions to the ground boarding position of a platform 24. COPYRIGHT: (C)2007,JPO&INPIT
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