Title:
OPERATING DEVICE FOR HYDRAULIC DRIVE WINCH
Document Type and Number:
Japanese Patent JPH01145997
Kind Code:
A
Abstract:
PURPOSE: To prevent misoperation by arranging an automatic stopper mechanism between a brake pedal of a hydraulically driven winch and an operating clutch lever of a work directional control valve to control ON/OFF of a clutch and an automatic brake. CONSTITUTION: In hoisting/lowering operation, a clutch lever 34 is put in a work position of a continuous line, an automatic side stopper rod 70 is projected, the tip is engaged with the upper surface of a stopper piece 55, and rotation in the free-fall direction is checked as long as there is no pulling-in operation of an interlocking cable 47 by a brake pedal. In this state, hoisting/lowering is performed by hoisting lever operation. When a manual side stopper rod 75 is also engaged with the stopper piece 55, rotation to the free-fall side is doubly checked. Next, when the automatic side stopper rod 70 is also retreated by pulling the interlocking cable 47 by stepping the brake pedal by retreating the manual side stopper rod 75, the clutch lever 34 can be operated to a free-fall position of a chain line to switch a work directional control valve.
Inventors:
KOIZUMI YUKIO
MATSUNAGA HIDENORI
MATSUNAGA HIDENORI
Application Number:
JP30374087A
Publication Date:
June 07, 1989
Filing Date:
November 30, 1987
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B66D1/44; (IPC1-7): B66D1/44
Attorney, Agent or Firm:
Etsushi Kotani (2 outside)