GB1461658A - Hydraulic circuit - Google Patents

Hydraulic circuit

Info

Publication number
GB1461658A
GB1461658A GB2424274A GB2424274A GB1461658A GB 1461658 A GB1461658 A GB 1461658A GB 2424274 A GB2424274 A GB 2424274A GB 2424274 A GB2424274 A GB 2424274A GB 1461658 A GB1461658 A GB 1461658A
Authority
GB
United Kingdom
Prior art keywords
load circuit
sensor
pumps
hydraulic circuit
detected
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.)
Expired
Application number
GB2424274A
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.)
Poclain SA
Original Assignee
Poclain SA
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 Poclain SA filed Critical Poclain SA
Publication of GB1461658A publication Critical patent/GB1461658A/en
Expired 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
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • 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
    • F15B2211/20576—Systems with pumps with multiple pumps
    • 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/632—Electronic controllers using input signals representing a flow rate
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6652—Control of the pressure source, e.g. control of the swash plate angle
    • 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6654—Flow rate control
    • 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/76—Control of force or torque of the output member

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)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Control Of Fluid Pressure (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

1461658 Automatic control POCLAIN 31 May 1974 [5 June 1973] 24242/74 Heading G3N A plurality of constant flow pumps 1, 2, 3, e.g. of different outputs, are driven by a common constant power motor M and supply a load circuit 4, e.g. in a civil engineering machine, electricallyoperated by-pass valves 5, 6, 7 in the pump delivery lines being automatically controlled by a logic circuit 10, in response to the load circuit pressure detected by a sensor 9, to connect selected pumps to the load circuit appropriate to the detected pressure at the sensor 9.
GB2424274A 1973-06-05 1974-05-31 Hydraulic circuit Expired GB1461658A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7320411A FR2232692B3 (en) 1973-06-05 1973-06-05

Publications (1)

Publication Number Publication Date
GB1461658A true GB1461658A (en) 1977-01-19

Family

ID=9120530

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2422974A Expired GB1461657A (en) 1973-06-05 1974-05-31 Hydraulic circuit
GB2424274A Expired GB1461658A (en) 1973-06-05 1974-05-31 Hydraulic circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2422974A Expired GB1461657A (en) 1973-06-05 1974-05-31 Hydraulic circuit

Country Status (8)

Country Link
JP (2) JPS5022181A (en)
BE (2) BE815647A (en)
BR (2) BR7404587A (en)
DE (2) DE2426904A1 (en)
ES (2) ES426973A1 (en)
FR (1) FR2232692B3 (en)
GB (2) GB1461657A (en)
IT (2) IT1012891B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3800964A1 (en) * 1988-01-15 1989-07-27 Loewe Pumpenfabrik Gmbh Pump system for operating pump installations comprising a plurality of pumps
JP2776882B2 (en) * 1989-04-27 1998-07-16 株式会社ユニシアジェックス Pump device
US5199854A (en) * 1990-08-08 1993-04-06 Nissan Motor Co., Ltd. Hydraulic supply arrangement for use with active automotive suspension or the like
US5251442A (en) * 1991-10-24 1993-10-12 Roche Engineering Corporation Fluid power regenerator
US5319932A (en) * 1993-04-28 1994-06-14 Roche Engineering Corporation Power sensing regenerator
DE19930562A1 (en) * 1999-07-02 2001-01-04 Still Gmbh Hydraulic system for an industrial truck
US8690553B2 (en) * 2008-02-04 2014-04-08 Illinois Tool Works Inc. Service pack tandem pump
DE102011015903B4 (en) 2011-04-01 2021-12-16 Robert Bosch Gmbh Pump arrangement

Also Published As

Publication number Publication date
DE2426839A1 (en) 1975-01-09
BR7404588D0 (en) 1975-01-07
ES426973A1 (en) 1976-07-16
FR2232692A1 (en) 1975-01-03
BE815647A (en) 1974-09-16
ES426974A1 (en) 1976-07-16
DE2426904A1 (en) 1975-01-02
GB1461657A (en) 1977-01-19
BE815648A (en) 1974-09-16
IT1012891B (en) 1977-03-10
FR2232692B3 (en) 1976-07-23
BR7404587A (en) 1976-02-10
JPS5022181A (en) 1975-03-10
IT1017630B (en) 1977-08-10
BR7404587D0 (en) 1975-01-07
JPS5022182A (en) 1975-03-10

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee