JPS5943202A - 油圧制御回路 - Google Patents

油圧制御回路

Info

Publication number
JPS5943202A
JPS5943202A JP57153282A JP15328282A JPS5943202A JP S5943202 A JPS5943202 A JP S5943202A JP 57153282 A JP57153282 A JP 57153282A JP 15328282 A JP15328282 A JP 15328282A JP S5943202 A JPS5943202 A JP S5943202A
Authority
JP
Japan
Prior art keywords
pressure
pilot
throttle
valve
passage
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
JP57153282A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0333926B2 (en]
Inventor
Haruhiko Kawasaki
治彦 川崎
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.)
KYB Corp
Original Assignee
Kayaba Industry 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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to JP57153282A priority Critical patent/JPS5943202A/ja
Publication of JPS5943202A publication Critical patent/JPS5943202A/ja
Publication of JPH0333926B2 publication Critical patent/JPH0333926B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
    • F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
    • F15B11/055—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive by adjusting the pump output or bypass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to load pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40507—Flow control characterised by the type of flow control means or valve with constant throttles or orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40576—Assemblies of multiple valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41554—Flow control characterised by the connections of the flow control means in the circuit being connected to a return line and a directional control valve

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Fluid-Pressure Circuits (AREA)
JP57153282A 1982-09-02 1982-09-02 油圧制御回路 Granted JPS5943202A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57153282A JPS5943202A (ja) 1982-09-02 1982-09-02 油圧制御回路

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57153282A JPS5943202A (ja) 1982-09-02 1982-09-02 油圧制御回路

Publications (2)

Publication Number Publication Date
JPS5943202A true JPS5943202A (ja) 1984-03-10
JPH0333926B2 JPH0333926B2 (en]) 1991-05-20

Family

ID=15559058

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57153282A Granted JPS5943202A (ja) 1982-09-02 1982-09-02 油圧制御回路

Country Status (1)

Country Link
JP (1) JPS5943202A (en])

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389401U (en]) * 1986-11-29 1988-06-10
US4938023A (en) * 1987-09-29 1990-07-03 Shin Caterpillar Mitsubishi Ltd. Swing-frame motor flow and sensed load pressure control system for hydraulic excavator
GB2403029A (en) * 2003-06-19 2004-12-22 Volvo Constr Equip Holding Se Circuit for controlling hydraulic pump discharge

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313748A (en) * 1976-07-21 1978-02-07 Mitsubishi Electric Corp Elevator group managing device
JPS57137701A (en) * 1981-01-16 1982-08-25 Gen Signal Corp Fluid pressure controller

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313748A (en) * 1976-07-21 1978-02-07 Mitsubishi Electric Corp Elevator group managing device
JPS57137701A (en) * 1981-01-16 1982-08-25 Gen Signal Corp Fluid pressure controller

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6389401U (en]) * 1986-11-29 1988-06-10
US4938023A (en) * 1987-09-29 1990-07-03 Shin Caterpillar Mitsubishi Ltd. Swing-frame motor flow and sensed load pressure control system for hydraulic excavator
GB2403029A (en) * 2003-06-19 2004-12-22 Volvo Constr Equip Holding Se Circuit for controlling hydraulic pump discharge
FR2856443A1 (fr) * 2003-06-19 2004-12-24 Volvo Constr Equip Holding Se Circuit de controle du debit de refoulement d'une pompe hydraulique
US6976358B2 (en) 2003-06-19 2005-12-20 Volvo Construction Equipment Holding Sweden Ab Circuit for controlling discharge amount of hydraulic pump
GB2403029B (en) * 2003-06-19 2008-01-16 Volvo Constr Equip Holding Se Circuit for controlling discharge amount of hydraulic pump

Also Published As

Publication number Publication date
JPH0333926B2 (en]) 1991-05-20

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