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JPS57131891A - Oil hydraulic controller - Google Patents

Oil hydraulic controller

Info

Publication number
JPS57131891A
JPS57131891A JP56016584A JP1658481A JPS57131891A JP S57131891 A JPS57131891 A JP S57131891A JP 56016584 A JP56016584 A JP 56016584A JP 1658481 A JP1658481 A JP 1658481A JP S57131891 A JPS57131891 A JP S57131891A
Authority
JP
Japan
Prior art keywords
pressure
flow control
line
delivery amount
control valve
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
JP56016584A
Other languages
Japanese (ja)
Inventor
Kenichi Akimoto
Yoshisuke Akita
Hiroshi Kondo
Kenichi Aeba
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.)
Tokyo Keiki Inc
Original Assignee
Tokyo Keiki 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 Tokyo Keiki Co Ltd filed Critical Tokyo Keiki Co Ltd
Priority to JP56016584A priority Critical patent/JPS57131891A/en
Publication of JPS57131891A publication Critical patent/JPS57131891A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To improve responsive quality of flow control, by providing a sequence valve, having a value of operating set pressure higher than feathering pressure, in a load line at the secondary side of a flow control valve and increasing initial pipe pressure of a primary line at starting or accelerating operation. CONSTITUTION:A sequence valve 18, opened when secondary pressure becomes at least set pressure, is provided in a main pipe line 20 (load line) at the secondary side of a flow control valve 13. Before primary side pressure of the main pipe line 20 reaches a value of the set pressure of the sequence valve 18, pressure increased by a delivery amount is used only for driving a control actuator 10a, then the actuator eccentrically drives a ring so as to rapidly obtain a maximum delivery amount. In this way, a variable delivery vane pump 10 operates to promptly increase a delivery amount, and a rise-up of load can be quickly obtained to an operating speed on the basis of a set flow rate of the flow control valve 13.
JP56016584A 1981-02-06 1981-02-06 Oil hydraulic controller Pending JPS57131891A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56016584A JPS57131891A (en) 1981-02-06 1981-02-06 Oil hydraulic controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56016584A JPS57131891A (en) 1981-02-06 1981-02-06 Oil hydraulic controller

Publications (1)

Publication Number Publication Date
JPS57131891A true JPS57131891A (en) 1982-08-14

Family

ID=11920321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56016584A Pending JPS57131891A (en) 1981-02-06 1981-02-06 Oil hydraulic controller

Country Status (1)

Country Link
JP (1) JPS57131891A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62270803A (en) * 1986-05-19 1987-11-25 Nissei Plastics Ind Co Hydraulic circuit
EP0493596A1 (en) * 1989-09-22 1992-07-08 Kabushiki Kaisha Komatsu Seisakusho Capacity control circuit for variable capacity pump
US5183393A (en) * 1992-02-10 1993-02-02 Schaffner Larey D Power limiter control for a variable displacement axial piston pump
US5190445A (en) * 1989-04-28 1993-03-02 Kabushiki Kaisha Komatsu Seisakusho Variable capacity pump controller of hydraulically driven wheel
US5344288A (en) * 1993-01-28 1994-09-06 Kabushiki Kaisha Komatsu Seisakusho Device for controlling displacement of variable displacement hydraulic pump
JP2005090749A (en) * 2003-09-18 2005-04-07 Sauer Danfoss Inc Open circuit hydraulic transmission device comprising automatic pressure compensation remote equipment

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62270803A (en) * 1986-05-19 1987-11-25 Nissei Plastics Ind Co Hydraulic circuit
US5190445A (en) * 1989-04-28 1993-03-02 Kabushiki Kaisha Komatsu Seisakusho Variable capacity pump controller of hydraulically driven wheel
EP0493596A1 (en) * 1989-09-22 1992-07-08 Kabushiki Kaisha Komatsu Seisakusho Capacity control circuit for variable capacity pump
US5183393A (en) * 1992-02-10 1993-02-02 Schaffner Larey D Power limiter control for a variable displacement axial piston pump
US5344288A (en) * 1993-01-28 1994-09-06 Kabushiki Kaisha Komatsu Seisakusho Device for controlling displacement of variable displacement hydraulic pump
JP2005090749A (en) * 2003-09-18 2005-04-07 Sauer Danfoss Inc Open circuit hydraulic transmission device comprising automatic pressure compensation remote equipment

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