WORKING VEHICLE SAFETY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a working vehicle safety device for preventing an accident in which a travelling body is brought in an unstable attitude after starting work because of starting work with a jack in an abnormal condition in grounding after the protruding operation of the jack. SOLUTION: The working vehicle safety device is provided for a high lift working vehicle 1 having a boom 30 and the jack 13 on the travelling body 10. It comprises: a grounded condition checking switch 71 to be operated at a position of visually checking the grounded condition of at least one jack 13 out of the plurality of jacks 13; a jack grounding completion detector 82 for detecting that all jacks 13 are in the grounded condition; and an interlock circuit 80 for permitting the operation of the boom 30 when the grounded condition checking switch 71 is operated after the jack grounding completion detector 82 detects that all jacks 13 are in the grounded condition. COPYRIGHT: (C)2007,JPO&INPIT