FR2308807A1 - Systeme de pompage double - Google Patents

Systeme de pompage double

Info

Publication number
FR2308807A1
FR2308807A1 FR7611309A FR7611309A FR2308807A1 FR 2308807 A1 FR2308807 A1 FR 2308807A1 FR 7611309 A FR7611309 A FR 7611309A FR 7611309 A FR7611309 A FR 7611309A FR 2308807 A1 FR2308807 A1 FR 2308807A1
Authority
FR
France
Prior art keywords
pumping system
double pumping
double
pumping
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.)
Withdrawn
Application number
FR7611309A
Other languages
English (en)
Inventor
Richard Lech
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.)
Navistar Inc
Original Assignee
International Harverster Corp
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 International Harverster Corp filed Critical International Harverster Corp
Publication of FR2308807A1 publication Critical patent/FR2308807A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2221—Control of flow rate; Load sensing arrangements
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with 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
    • 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
    • F15B2211/2053—Type of pump
    • F15B2211/20538—Type of pump constant capacity
    • 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
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20584—Combinations of pumps with high and low capacity
    • 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
    • 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
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • 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
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
FR7611309A 1975-04-23 1976-04-16 Systeme de pompage double Withdrawn FR2308807A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/570,974 US3962870A (en) 1975-04-23 1975-04-23 Variable volume dual pump circuit

Publications (1)

Publication Number Publication Date
FR2308807A1 true FR2308807A1 (fr) 1976-11-19

Family

ID=24281824

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7611309A Withdrawn FR2308807A1 (fr) 1975-04-23 1976-04-16 Systeme de pompage double

Country Status (3)

Country Link
US (1) US3962870A (fr)
JP (1) JPS51124781A (fr)
FR (1) FR2308807A1 (fr)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918163Y2 (ja) * 1979-04-17 1984-05-26 株式会社小松製作所 作動油タンク
US4382485A (en) * 1980-05-27 1983-05-10 Dresser Industries, Inc. Hydraulic logic control for variable displacement pump
US4359130A (en) * 1980-05-27 1982-11-16 International Harvester Co. Hydraulic system for responsive splitting of engine power
JPS578903U (fr) * 1980-06-18 1982-01-18
US4819430A (en) * 1983-01-21 1989-04-11 Hydreco, Inc. Variably charged hydraulic circuit
US4898078A (en) * 1987-09-11 1990-02-06 Deere & Company Hydraulic system for a work vehicle
US4809586A (en) * 1987-09-11 1989-03-07 Deere & Company Hydraulic system for a work vehicle
US5201174A (en) * 1991-12-02 1993-04-13 Deere & Company Auxiliary hydraulic pump system
US5335494A (en) * 1993-01-21 1994-08-09 Deere & Company Hydraulic system for reel mower vehicles
US5284249A (en) * 1993-02-05 1994-02-08 Dorr-Oliver Incorporated Direct hydraulic drive for large flotation cells
US5802745A (en) * 1995-09-15 1998-09-08 Haseotes; Byron Hydraulic system for a road vehicle
JP3001858B1 (ja) * 1998-08-18 2000-01-24 本田技研工業株式会社 潤滑油圧制御装置
US6029445A (en) * 1999-01-20 2000-02-29 Case Corporation Variable flow hydraulic system
DE19924473A1 (de) * 1999-05-28 2000-11-30 Mannesmann Rexroth Ag Hydraulischer Antrieb mit mehreren auch einen Differentialzylinder umfassenden hydraulischen Verbrauchern, insbesondere an einer Kunststoffspritzgießmaschine
AU2005311758B2 (en) * 2004-12-01 2011-11-10 Concentric Rockford Inc. Hydraulic drive system
US20070089874A1 (en) * 2005-10-24 2007-04-26 Tuntland John E Cooling system for a work machine
US7316111B2 (en) * 2006-01-13 2008-01-08 Clark Equipment Company Multi-purpose hydraulic system
US8322252B2 (en) * 2006-09-29 2012-12-04 Caterpillar Inc. Step-change transmission having charge and variable displacement pumps
US8128377B2 (en) * 2007-04-03 2012-03-06 GM Global Technology Operations LLC Split-pressure dual pump hydraulic fluid supply system for a multi-speed transmission and method
US20090025380A1 (en) 2007-07-24 2009-01-29 Parker Hannifin Corporation, An Ohio Corporation Fixed/variable hybrid system
EP2055953B1 (fr) * 2007-11-01 2018-08-15 Danfoss Power Solutions Aps Machine de travail pour fluides
EP2055942B1 (fr) * 2007-11-01 2012-06-06 Sauer-Danfoss ApS Système hydraulique avec pompe supplémentaire
US8801407B2 (en) * 2010-02-24 2014-08-12 Harris Waste Management Group, Inc. Hybrid electro-hydraulic power device
US9074670B1 (en) 2011-05-27 2015-07-07 Hydro-Gear Limited Partnership Hydraulic pump assembly
CN104011301A (zh) * 2011-12-13 2014-08-27 洋马株式会社 作业车辆
JP6690858B2 (ja) * 2016-12-14 2020-04-28 株式会社クボタ 作業機の油圧システム
EP4389546A1 (fr) * 2022-12-21 2024-06-26 CNH Industrial Italia S.p.A. Système de freinage amélioré à actionnement hydraulique pour un véhicule de travail et son procédé de commande

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309983A (en) * 1941-03-06 1943-02-02 Hydraulic Dev Corp Inc Multiple cylinder press
US3023579A (en) * 1960-04-28 1962-03-06 Ford Motor Co Fluid pressure system
FR2101886A5 (fr) * 1970-08-01 1972-03-31 Salzgitter Maschinen Ag
US3686862A (en) * 1971-04-14 1972-08-29 Bucyrus Erie Co Hydraulic system for single engine truck crane or the like
FR2203438A5 (fr) * 1972-10-17 1974-05-10 Poclain Sa
FR2232226A5 (fr) * 1973-05-28 1974-12-27 Poclain Sa
FR2271416A1 (fr) * 1974-05-15 1975-12-12 Poclain Sa
US3952509A (en) * 1975-04-10 1976-04-27 Allis-Chalmers Corporation Hydraulic system combining open center and closed center hydraulic circuits

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659419A (en) * 1969-10-13 1972-05-02 Hitachi Construction Machinery Hydraulic circuit of hydraulically driven vehicle
US3859790A (en) * 1972-10-17 1975-01-14 Serge B Bacquie Device for supplying fluid under pressure to at least two utilisation circuits
US3785157A (en) * 1972-11-24 1974-01-15 Deere & Co Flow control dump valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2309983A (en) * 1941-03-06 1943-02-02 Hydraulic Dev Corp Inc Multiple cylinder press
US3023579A (en) * 1960-04-28 1962-03-06 Ford Motor Co Fluid pressure system
FR2101886A5 (fr) * 1970-08-01 1972-03-31 Salzgitter Maschinen Ag
US3686862A (en) * 1971-04-14 1972-08-29 Bucyrus Erie Co Hydraulic system for single engine truck crane or the like
FR2203438A5 (fr) * 1972-10-17 1974-05-10 Poclain Sa
FR2232226A5 (fr) * 1973-05-28 1974-12-27 Poclain Sa
FR2271416A1 (fr) * 1974-05-15 1975-12-12 Poclain Sa
US3952509A (en) * 1975-04-10 1976-04-27 Allis-Chalmers Corporation Hydraulic system combining open center and closed center hydraulic circuits

Also Published As

Publication number Publication date
US3962870A (en) 1976-06-15
JPS51124781A (en) 1976-10-30

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Legal Events

Date Code Title Description
ST Notification of lapse