JPS5578803A - Liquid pressure circuit - Google Patents

Liquid pressure circuit

Info

Publication number
JPS5578803A
JPS5578803A JP14787378A JP14787378A JPS5578803A JP S5578803 A JPS5578803 A JP S5578803A JP 14787378 A JP14787378 A JP 14787378A JP 14787378 A JP14787378 A JP 14787378A JP S5578803 A JPS5578803 A JP S5578803A
Authority
JP
Japan
Prior art keywords
liquid pressure
actuator
pressure pump
check valve
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP14787378A
Other languages
Japanese (ja)
Other versions
JPS587845B2 (en
Inventor
Akira Dobashi
Kenji Maeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14787378A priority Critical patent/JPS587845B2/en
Publication of JPS5578803A publication Critical patent/JPS5578803A/en
Publication of JPS587845B2 publication Critical patent/JPS587845B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To correctly stop the actuator, when lowered a delivery pressure of the liquid pressure pump, by providing a check valve of pilot type in a half way of the line, that connects the changeover valve and the actuator, and directly inducting a pilot pressure from the liquid pressure pump.
CONSTITUTION: In a half way of the line that connects a changeover valve 1 and an actuator 2, is prpvided a check valve 5, 6 of pilot type, and a pilot pressure, for operating this check valve 5, 6 of pilot type, is directly inducted from a liquid pressure pump 7. In this way, with a delivery pressure of the liquid pressure pump 7 lowering below a specified value, the check valve 5, 6 of pilot type is closed, and a flow of the liquid, going to the changeover valve 1 from the acuator 2, can be correctly checked. Accordingly, when lowered the delivery pressure of the liquid pressure pump 7, the actuator 2 can be correctly stopped.
COPYRIGHT: (C)1980,JPO&Japio
JP14787378A 1978-12-01 1978-12-01 hydraulic circuit Expired JPS587845B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14787378A JPS587845B2 (en) 1978-12-01 1978-12-01 hydraulic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14787378A JPS587845B2 (en) 1978-12-01 1978-12-01 hydraulic circuit

Publications (2)

Publication Number Publication Date
JPS5578803A true JPS5578803A (en) 1980-06-13
JPS587845B2 JPS587845B2 (en) 1983-02-12

Family

ID=15440155

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14787378A Expired JPS587845B2 (en) 1978-12-01 1978-12-01 hydraulic circuit

Country Status (1)

Country Link
JP (1) JPS587845B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008149596A1 (en) * 2007-06-05 2008-12-11 Sanyo Kiki Co., Ltd. Hydraulic controller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008149596A1 (en) * 2007-06-05 2008-12-11 Sanyo Kiki Co., Ltd. Hydraulic controller
JP2008303909A (en) * 2007-06-05 2008-12-18 Sanyo Kiki Co Ltd Hydraulic control device
US8671986B2 (en) 2007-06-05 2014-03-18 Sanyo Kiki Co., Ltd. Hydraulic controller

Also Published As

Publication number Publication date
JPS587845B2 (en) 1983-02-12

Similar Documents

Publication Publication Date Title
JPS5270235A (en) Cylinder number controlling system in engine
JPS521324A (en) Exhaust gas recirculation apparatus
JPS5578803A (en) Liquid pressure circuit
JPS5246227A (en) Exhaust-gas reciculation system
JPS57176384A (en) Compressor
JPS5422068A (en) Control valve for machine
JPS5311306A (en) Pump unit
JPS5620806A (en) Fluid control system
JPS532711A (en) Oil supply unit
JPS5610801A (en) Double-system confluence circuit device
JPS5666572A (en) Automatic unloader valve with built-in pressure control mechanism
JPS56160405A (en) Fluid circuit
JPS57157802A (en) Surge pressure absorber circuit
JPS57132938A (en) Vacuum adsorbing device
JPS5264532A (en) Cabureter for stratified combusting type engine
JPS5572699A (en) Pump device
JPS5260412A (en) Automatic well pump
JPS5755225A (en) Fuel cock device for fuel tank
JPS56135781A (en) Apparatus for controlling exhausting pressure and flowing quantity in screw compressor
JPS5578804A (en) Valve block for pressure fluid
JPS56120863A (en) Change-over valve
JPS5336706A (en) Jet pump flow-quantity controlling valve used for heating system
JPS52153210A (en) Automatic pumping device
JPS52112103A (en) Automatic operating method of vortex flow pump
JPS53131329A (en) Injection carburetter