Title:
VALVE SYSTEM AND FLUID PRESSURE CIRCUIT
Document Type and Number:
Japanese Patent JP2003247506
Kind Code:
A
Abstract:
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.
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.
Inventors:
MORIYA NAOYUKI
SHIMADA YOSHIYUKI
AKIYAMA SEIICHI
SHIMADA YOSHIYUKI
AKIYAMA SEIICHI
Application Number:
JP2002046499A
Publication Date:
September 05, 2003
Filing Date:
February 22, 2002
Export Citation:
Assignee:
CATERPILLAR MITSUBISHI LTD
International Classes:
E02F9/20; E02F9/22; F15B11/17; F15B13/06; (IPC1-7): F15B13/06; E02F9/20; E02F9/22; F15B11/17
Attorney, Agent or Firm:
Kabazawa Xiang (2 people outside)