| 摘要 |
PROBLEM TO BE SOLVED: To improve the safety of a high-lift work in a high-lift working vehicle having a boom and a jack. SOLUTION: The high-lift working vehicle 1 includes: the boom 5 mounted on a car body 2; a work bench 7 mounted at the tip of the boom 5; a jack 8 fitted to the car body 2 to lift up and support the car body 2; an interlock control circuit for allowing the elongating and contracting movement of the jack 8 in the state where the boom 5 is stored on the car body 2 and regulating the operation of the jack 8 in the state where the boom 5 is not stored on the car body 2; a jack operating lever 12a for elongating and contracting the jack 8; a boom storage detector for detecting that the boom 5 is stored on the car body 2; and an upper power supply switch 11c provided on the work bench 7, wherein in the state where the upper power supply switch 11c is on-operated, even if the storage of the boom 5 is detected, the elongating and contracting movement of the jack 8 is regulated regardless of the operation of the jack operating lever 12a. COPYRIGHT: (C)2006,JPO&NCIPI
|
