VALVE SYSTEM AND FLUID PRESSURE CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide a valve system capable of directly performing pilot operations of a main control valve and precisely grasping an interlocked operating state without using a pressure switch on a pressure sensor.

SOLUTION: An oil pressure remote-control valve 24 produces a pilot pressure to the main control valve 23 of a hydraulic circuit in proportion to control input amount by a manipulation body 22. A control input amount detection device 26, which outputs an electric signal corresponding to control input amount by a lever to a controller 25 for controlling the hydraulic circuit by electrically detecting the control input amount of the manipulation body 22, is arranged on an upper portion of the oil pressure remote-control valve 24.

COPYRIGHT: (C)2003,JPO