Document Type and Number:
Japanese Patent JPH0119073
Kind Code:
B2
Abstract:
PURPOSE:To improve the reliability of operation of the captioned controller in undesirable condition by independenty performing ordinary operation of a control valve with a manual operation handle and remote operation of a control valve with a proportional electromagnet. CONSTITUTION:A variable displacement pump 2 driven by an engine 1 drives a hydraulic motor 7. A charge pump 12 connected to the driving shaft 13 of the variable displacement pump 2 feeds working oil into a control valve 15. The one edge of the spool 33 of the control valve 15 is connected to a manually operated handle 37 through links 63 and 67 and a torsion spring 45, and said edge is also connected to a proportional electromagnets 21a and 21b through a swing lever 76, and both operating means can be optionally through switching. Therefore, this fluid controller can be favorably used in undesirable conditions such as contamination due to working oil on a truck-mixer, high temperature and so on.
Inventors:
INOE OSAMU
ORISHIMA HIROSHI
ORISHIMA HIROSHI
Application Number:
JP20386981A
Publication Date:
April 10, 1989
Filing Date:
December 16, 1981
Export Citation:
Assignee:
DAIKIN KOGYO CO LTD
International Classes:
F04B1/26; F15B9/08; F15B9/09; F15B13/04