JPS5025571B1 - - Google Patents

Info

Publication number
JPS5025571B1
JPS5025571B1 JP45037838A JP3783870A JPS5025571B1 JP S5025571 B1 JPS5025571 B1 JP S5025571B1 JP 45037838 A JP45037838 A JP 45037838A JP 3783870 A JP3783870 A JP 3783870A JP S5025571 B1 JPS5025571 B1 JP S5025571B1
Authority
JP
Japan
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
JP45037838A
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 filed Critical
Publication of JPS5025571B1 publication Critical patent/JPS5025571B1/ja
Pending 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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • 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
    • 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
    • F15B2211/20576—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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check 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
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable 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
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow to the return line
    • 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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • 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
    • F15B2211/65—Methods of control of the load sensing 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142—Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • 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)
  • Power Steering Mechanism (AREA)
JP45037838A 1969-05-09 1970-05-01 Pending JPS5025571B1 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US82340169A 1969-05-09 1969-05-09

Publications (1)

Publication Number Publication Date
JPS5025571B1 true JPS5025571B1 (ja) 1975-08-25

Family

ID=25238661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45037838A Pending JPS5025571B1 (ja) 1969-05-09 1970-05-01

Country Status (6)

Country Link
US (1) US3535877A (ja)
JP (1) JPS5025571B1 (ja)
DE (1) DE2012752C3 (ja)
FR (1) FR2046570A5 (ja)
GB (1) GB1243761A (ja)
SE (1) SE346834B (ja)

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148331B2 (ja) * 1971-08-06 1974-03-29 Poclain Sa
DE1952034A1 (de) * 1969-10-15 1971-04-22 Linde Ag Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu
US3719249A (en) * 1971-03-05 1973-03-06 Gen Signal Corp Power steering system affording emergency steering capability
US3868821A (en) * 1974-03-20 1975-03-04 Tyrone Hydraulics Automatic pump control system
DE2435602C3 (de) * 1974-07-24 1980-06-12 International Harvester Company Mbh, 4040 Neuss Selbsttätige Steuereinrichtung zur Verteilung des Druckmittels auf zwei Hydrauliksysteme
US3942413A (en) * 1974-08-01 1976-03-09 Borg-Warner Corporation Load limiting system
US3975909A (en) * 1975-02-26 1976-08-24 Tyrone Hydraulics, Inc. Engine sensor hydraulic control system
US3972185A (en) * 1975-02-28 1976-08-03 Caterpillar Tractor Co. Hydraulic system for a pipelayer
DE2625101C2 (de) * 1976-06-04 1985-11-14 Robert Bosch Gmbh, 7000 Stuttgart Hydraulische Steuereinrichtung zur volumenstromabhängigen Verteilung von Druckflüssigkeit auf zwei Systeme
US4121501A (en) * 1977-07-11 1978-10-24 Caterpillar Tractor Co. Flow combining system for dual pumps
US4141280A (en) * 1977-07-11 1979-02-27 Caterpillar Tractor Co. Dual pump flow combining system
US4204811A (en) * 1977-08-19 1980-05-27 The Garrett Corporation Fluid pumping system
GB2041851B (en) * 1978-12-25 1983-04-13 Komatsu Mfg Co Ltd Hydraulic circuits for off-highway vehicles
JPS5766243A (en) * 1980-10-09 1982-04-22 Komatsu Ltd Liquid pressure circuit for construction machinery
US4517800A (en) * 1980-10-31 1985-05-21 Kabushiki Kaisha Komatsu Seisakusho Hydraulic control system for off-highway self-propelled work machines
US4422290A (en) * 1981-08-26 1983-12-27 General Signal Hydraulic control system for governing steering and implement actuators
DE3210759A1 (de) * 1981-09-17 1983-10-06 Walter Schopf Pumpenkombination mit mengenreguliereinrichtung
JPS58135551U (ja) * 1982-03-09 1983-09-12 株式会社クボタ トラクタの駆動構造
US4819430A (en) * 1983-01-21 1989-04-11 Hydreco, Inc. Variably charged hydraulic circuit
DE3513967A1 (de) * 1985-04-18 1986-10-23 Mannesmann Rexroth GmbH, 8770 Lohr Sicherheitsanordnung fuer vorrangige hydraulische verbraucher
US4649705A (en) * 1985-05-14 1987-03-17 Clark Equipment Company Composite hydraulic system
AU631727B2 (en) * 1990-03-09 1992-12-03 Kubota Corporation Hydraulic circuit for a working vehicle having a plurality of hydraulic actuators
US5513732A (en) * 1994-08-05 1996-05-07 Ford Motor Company Regulation of hydraulic pressure in a system having multiple pressure sources
US5615553A (en) * 1995-06-28 1997-04-01 Case Corporation Hydraulic circuit with load sensing feature
DE102006060351B8 (de) * 2006-12-20 2008-07-24 Sauer-Danfoss Gmbh & Co Ohg Hydraulische Schaltungsanordnung mit Energierückgewinnung
JP5232843B2 (ja) * 2010-09-16 2013-07-10 株式会社山田製作所 可変流量オイルポンプ
CN103016457B (zh) * 2012-12-05 2015-08-26 中联重科股份有限公司 液压泵控制系统、车辆及其转向液压系统
EP3006744B1 (en) * 2013-05-30 2019-06-12 Hitachi Construction Machinery Tierra Co., Ltd. Hydraulic drive device for construction machinery
DE102014218884B4 (de) * 2014-09-19 2020-12-10 Voith Patent Gmbh Hydraulischer Antrieb mit Eilhub und Lasthub
CN108167240B (zh) * 2017-12-05 2019-07-02 西安交通大学 一种局部加载液压机的液压系统
DE102019109773A1 (de) * 2019-04-12 2020-10-15 Wirtgen Gmbh Baumaschine und Verfahren zum Steuern einer Baumaschine
US11168711B2 (en) * 2019-10-24 2021-11-09 Deere & Company Hydraulic system for a multi-function machine
CN113565817A (zh) * 2021-06-29 2021-10-29 英轩重工有限公司 一种卸荷阀及其装载机液压多泵合流系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2103530A (en) * 1935-09-05 1937-12-28 Maine Steel Inc System of equalizing the lifting speed of differently loaded hydraulic jacks
US2879612A (en) * 1956-05-02 1959-03-31 Gar Wood Ind Inc Hydraulic drive for ditcher conveyor
US3360925A (en) * 1966-02-03 1968-01-02 Int Harvester Co Multiple speed hydraulic control system
US3410295A (en) * 1966-02-21 1968-11-12 Gen Signal Corp Regulating valve for metering flow to two hydraulic circuits
US3386344A (en) * 1966-09-30 1968-06-04 Caterpillar Tractor Co Self-loading scraper hydraulic circuit with diverter

Also Published As

Publication number Publication date
DE2012752B2 (de) 1973-03-29
DE2012752C3 (de) 1973-10-18
FR2046570A5 (ja) 1971-03-05
US3535877A (en) 1970-10-27
DE2012752A1 (de) 1970-11-26
SE346834B (ja) 1972-07-17
GB1243761A (en) 1971-08-25

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