JPS57177405A - Combined flow type flow control circuit associated with pressure compensation - Google Patents

Combined flow type flow control circuit associated with pressure compensation

Info

Publication number
JPS57177405A
JPS57177405A JP6302281A JP6302281A JPS57177405A JP S57177405 A JPS57177405 A JP S57177405A JP 6302281 A JP6302281 A JP 6302281A JP 6302281 A JP6302281 A JP 6302281A JP S57177405 A JPS57177405 A JP S57177405A
Authority
JP
Japan
Prior art keywords
valve
flow control
pump
control circuit
pressure compensation
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.)
Pending
Application number
JP6302281A
Other languages
Japanese (ja)
Inventor
Kenji Masuda
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries Ltd
Daikin Kogyo Co 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 Daikin Industries Ltd, Daikin Kogyo Co Ltd filed Critical Daikin Industries Ltd
Priority to JP6302281A priority Critical patent/JPS57177405A/en
Publication of JPS57177405A publication Critical patent/JPS57177405A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: In a flow control circuit for a hydraulic circuit havng a plurality of pumps, to enable the selection of the flow control pattern and the quick flow control, by combining or separating the delivery flow of each pump in accordance to the exchange operation of an exchange valve and the opening of a throttle valve.
CONSTITUTION: A throttle valve 15 is placed in the main line 13 for connecting an actuator 12 to the delivery side of variable pump 11. A load sensing valve 21, a pilot valve 22 fir controlling the pressure having similar structure and surge abosrbing valve 23 in the shape of a relief valve are provided between said valve 15 and the pump 11. Furthermore a fixed pump 71 is provided where the delivery line 72 is connected to the main line 13 at the upstream of the valve 15 while simultaneously connected to a bypass type pressure compensation valve 74. The spring chamber of said valve 74 can connect a two-way exchange electromagntic valve 77 to the downstream of a tank 80 and the throttle valve 15. The pilot line 78 between the valves 74, 77 is connected through a relief valve 87 to the tank 89.
COPYRIGHT: (C)1982,JPO&Japio
JP6302281A 1981-04-25 1981-04-25 Combined flow type flow control circuit associated with pressure compensation Pending JPS57177405A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6302281A JPS57177405A (en) 1981-04-25 1981-04-25 Combined flow type flow control circuit associated with pressure compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6302281A JPS57177405A (en) 1981-04-25 1981-04-25 Combined flow type flow control circuit associated with pressure compensation

Publications (1)

Publication Number Publication Date
JPS57177405A true JPS57177405A (en) 1982-11-01

Family

ID=13217274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6302281A Pending JPS57177405A (en) 1981-04-25 1981-04-25 Combined flow type flow control circuit associated with pressure compensation

Country Status (1)

Country Link
JP (1) JPS57177405A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012154464A2 (en) * 2011-05-10 2012-11-15 Caterpillar Inc. Pressure limiting in hydraulic systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012154464A2 (en) * 2011-05-10 2012-11-15 Caterpillar Inc. Pressure limiting in hydraulic systems
WO2012154464A3 (en) * 2011-05-10 2013-01-03 Caterpillar Inc. Pressure limiting in hydraulic systems
US9003786B2 (en) 2011-05-10 2015-04-14 Caterpillar Inc. Pressure limiting in hydraulic systems

Similar Documents

Publication Publication Date Title
JPS57177405A (en) Combined flow type flow control circuit associated with pressure compensation
JPS57177403A (en) Combined flow type flow control circuit associated with pressure compensation
JPS57177404A (en) Combined flow type flow control circuit associated with pressure compensation
JPS57177406A (en) Combind flow type flow control circuit capable of mode exchange
JPS56143803A (en) Fluid controller
JPS55115605A (en) Flow distributing valve
JPS55159301A (en) Control circuit for actuator
JPS54156985A (en) Safety device of hydraulic circuit having a plurality of actuators
JPS57131890A (en) Oil hydraulic controller
JPS5788237A (en) Hydraulic actuator type fuel injection timing regulator
JPS56141403A (en) Fluid controller
JPS56156482A (en) Input limiting method and device for hydraulic device driven by engine
JPS57131889A (en) Oil hydraulic controller
JPS5776304A (en) Hydraulic circuit for construction machinery
JPS5640914A (en) Flow rate control unit
JPH0219601Y2 (en)
JPS5620809A (en) Fluid control system
JPS5469676A (en) Oil pressure control system
JPS5830973Y2 (en) Actuator drive circuit
JPS5620807A (en) Amount of flow and pressure control system
JPS57140434A (en) Oil-pressure circuit for oil-pressure shovel
JPS571804A (en) Composite valve with pressure compensation for discharge control
EP0057526A3 (en) Hydraulic circuit selector with flow control
JPS57134006A (en) Control valve
JPS5444115A (en) Bypass apparatus of gas compressor for gas turbine