Title:
VALVE CONTROL DEVICE FOR HYDRAULIC ACTUATOR
Document Type and Number:
Japanese Patent JPH07103206
Kind Code:
A
Abstract:
PURPOSE: To comply with one actuator by one switching valve for the manual operation limit time for stopping the supply of automatic pressure oil during manual control in the case of supplying pressure oil to the actuator while depending on manual control and automatic control.
CONSTITUTION: A third switching valve 20 for the manual operation limit time is disposed in a pilot oil passage from a pilot pump 16 to a first switching valve 18 for manual control.
Inventors:
ONO TOMOAKI
TOZAWA SHOJI
FUJII SATOSHI
HARADA KOICHI
SAKAI MAKOTO
TOZAWA SHOJI
FUJII SATOSHI
HARADA KOICHI
SAKAI MAKOTO
Application Number:
JP26787693A
Publication Date:
April 18, 1995
Filing Date:
September 30, 1993
Export Citation:
Assignee:
CATERPILLAR MITSUBISHI LTD
International Classes:
E02F3/43; F15B11/08; E02F9/22; (IPC1-7): F15B11/08; E02F9/22
Attorney, Agent or Firm:
Tetsuo Hirose