BOOM OPERATION REGULATION DEVICE FOR HIGH LIFT WORK VEHICLE

摘要

PROBLEM TO BE SOLVED: To provide a boom operation regulation device for a high lift work vehicle corresponding to the hoisting load of a hoisting device and having high safety.;SOLUTION: This boom operation regulation device 80 for the high lift work vehicle 1 has a vehicle body 2 capable of running, a turn base 4 provided turnably in the vehicle body 2, a boom 5 pivotally connected with the turn base 4 so as to rise and fall down freely, a work base 9 held in the horizontal direction always irrespective of a rising angle of the boom 5 and attached to a tip part of the boom 5, and the hoisting device 40 attached to the tip part of the boom 5 or the work base 9. It has a winch load limit switch 26 for detecting the hoisting load of the hoisting device 40 and a boom operation regulation circuit 33 for regulating operation of the boom 5 in the direction in which load acting on the hoisting device 40 increases when it is detected by the winch load limit switch 26 that hoisting load exceeds allowable load.;COPYRIGHT: (C)2005,JPO&NCIPI