GB1290247A - - Google Patents

Info

Publication number
GB1290247A
GB1290247A GB1290247DA GB1290247A GB 1290247 A GB1290247 A GB 1290247A GB 1290247D A GB1290247D A GB 1290247DA GB 1290247 A GB1290247 A GB 1290247A
Authority
GB
United Kingdom
Prior art keywords
valve
line
valves
delivery
lines
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
Other languages
English (en)
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 GB1290247A publication Critical patent/GB1290247A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/10—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears
    • B62D11/14—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source
    • B62D11/18—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using gearings with differential power outputs on opposite sides, e.g. twin-differential or epicyclic gears differential power outputs being effected by additional power supply to one side, e.g. power originating from secondary power source the additional power supply being supplied hydraulically
    • B62D11/183—Control systems therefor
    • 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
    • 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
    • F15B2211/20—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
    • F15B2211/30—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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3116—Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • 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
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
GB1290247D 1969-10-15 1970-10-14 Expired GB1290247A (US06312121-20011106-C00033.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691952034 DE1952034A1 (de) 1969-10-15 1969-10-15 Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu

Publications (1)

Publication Number Publication Date
GB1290247A true GB1290247A (US06312121-20011106-C00033.png) 1972-09-20

Family

ID=5748310

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1290247D Expired GB1290247A (US06312121-20011106-C00033.png) 1969-10-15 1970-10-14

Country Status (6)

Country Link
US (1) US3720059A (US06312121-20011106-C00033.png)
JP (1) JPS5417114B1 (US06312121-20011106-C00033.png)
DE (1) DE1952034A1 (US06312121-20011106-C00033.png)
FR (1) FR2065949A5 (US06312121-20011106-C00033.png)
GB (1) GB1290247A (US06312121-20011106-C00033.png)
SE (1) SE366098B (US06312121-20011106-C00033.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119178A (US06312121-20011106-C00033.png) * 1974-03-11 1975-09-18

Families Citing this family (60)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2148331B2 (US06312121-20011106-C00033.png) * 1971-08-06 1974-03-29 Poclain Sa
DE2148502B2 (de) * 1971-09-29 1978-11-02 G.L. Rexroth Gmbh, 8770 Lohr Ein- oder mehrkreisiges Hydrauliksystem
BE792618A (fr) * 1971-12-13 1973-06-12 Caterpillar Tractor Co Ensemble de valves de commande hydrauliques.
US3922855A (en) * 1971-12-13 1975-12-02 Caterpillar Tractor Co Hydraulic circuitry for an excavator
US4030623A (en) * 1971-12-13 1977-06-21 Caterpillar Tractor Co. Hydraulic circuitry for an excavator
BR7204458D0 (pt) * 1972-06-16 1974-09-05 Orenstein & Koppel Ag Escavadeira de roda de pas de comando e acionamente hidraulico
DE2364282C3 (de) * 1973-12-22 1983-01-13 O & K Orenstein & Koppel Ag, 1000 Berlin Schaltungsanordnung für Hydraulikmotoren
US4179981A (en) * 1975-10-30 1979-12-25 Poclain Device for sequentially supplying several hydraulic motors
US4024710A (en) * 1976-03-25 1977-05-24 Koehring Company Load sensing hydraulic circuit having power matching means
US4078681A (en) * 1976-08-24 1978-03-14 Caterpillar Tractor Co. Dual pump hydraulic control system with predetermined flow crossover provision
US4210061A (en) * 1976-12-02 1980-07-01 Caterpillar Tractor Co. Three-circuit fluid system having controlled fluid combining
US4112821A (en) * 1976-12-03 1978-09-12 Caterpillar Tractor Co. Fluid control system for multiple circuited work elements
US4073141A (en) * 1977-03-17 1978-02-14 Caterpillar Tractor Co. Fluid control system with priority flow
US4142445A (en) * 1977-03-17 1979-03-06 Caterpillar Tractor Co. Crossover plural circuit fluid system
US4262554A (en) * 1978-08-18 1981-04-21 S.R.M. Hydromekanik Aktiebolag Hydraulic valve system for controlling particularly a vehicle gearbox
US4208874A (en) * 1978-08-28 1980-06-24 Caterpillar Tractor Co. Apparatus for producing different flow rates of a fluid
US4369625A (en) * 1979-06-27 1983-01-25 Hitachi Construction Machinery Co., Ltd. Drive system for construction machinery and method of controlling hydraulic circuit means thereof
DE2930107A1 (de) * 1979-07-25 1981-02-05 Zahnradfabrik Friedrichshafen Hochdruckpumpe mit druckregler
JPS56501057A (US06312121-20011106-C00033.png) * 1979-08-30 1981-07-30
DE3007787A1 (de) * 1980-02-29 1981-09-17 Linde Ag, 6200 Wiesbaden Steuereinrichtung mit einem schieberventil mit feinsteuernuten am steuerschieber
JPS6129813Y2 (US06312121-20011106-C00033.png) * 1980-07-07 1986-09-02
JPS5751006A (en) * 1980-09-08 1982-03-25 Toshiba Mach Co Ltd Composite control valve for conflluence
DE3044144A1 (de) * 1980-11-24 1982-09-09 Linde Ag, 6200 Wiesbaden Hydrostatisches antriebssystem mit einer einstellbaren pumpe und mehreren verbrauchern
DE3146508A1 (de) * 1980-11-24 1982-06-24 Linde Ag, 6200 Wiesbaden Antriebssystem mit mindestens zwei teilsystemen
DE3071525D1 (en) * 1980-12-24 1986-05-07 Caterpillar Tractor Co System with constant force actuator
US4372193A (en) * 1980-12-24 1983-02-08 Caterpillar Tractor Co. System with constant force actuator
US4378675A (en) * 1981-01-14 1983-04-05 Mobil Oil Corporation Hydraulic pump interlock system
US4561824A (en) * 1981-03-03 1985-12-31 Hitachi, Ltd. Hydraulic drive system for civil engineering and construction machinery
DE3216249C2 (de) * 1981-05-02 1986-08-21 Hitachi Construction Machinery Co. Ltd., Tokio/Tokyo Hydrauliksystem für Hoch- und Tiefbaumaschinen
JPS6056923B2 (ja) * 1981-05-14 1985-12-12 日立建機株式会社 油圧回路
JPS6056924B2 (ja) * 1981-05-14 1985-12-12 日立建機株式会社 油圧回路
DE3221160C2 (de) * 1982-06-04 1986-05-07 Mannesmann Rexroth GmbH, 8770 Lohr Aus zwei Steuerblöcken bestehende Steuerventileinrichtung für mehrere hydraulische Antriebe, insbesondere von Mobilgeräten
US4545202A (en) * 1983-10-24 1985-10-08 Sundstrand Corporation Pressure-regulating system
IT1187892B (it) * 1986-02-04 1987-12-23 Chs Vickers Spa Circuito idraulico di comando per organi di lavoro di macchine movimento terra con frenatura centralizzata degli attuatori
US4787204A (en) * 1987-09-28 1988-11-29 J. I. Case Company Common relief valve
JP2511629Y2 (ja) * 1988-05-16 1996-09-25 株式会社小松製作所 油圧回路
WO1989012756A1 (en) * 1988-06-17 1989-12-28 Kabushiki Kaisha Kobe Seiko Sho Fluid control mechanism for power shovels
EP0425684B1 (en) * 1989-03-24 1994-12-14 Hitachi Construction Machinery Co., Ltd. Valve apparatus and hydraulic drive system
KR940009219B1 (ko) * 1989-03-30 1994-10-01 히다찌 겐끼 가부시기가이샤 장궤식차량의 유압구동장치
DE3919640C2 (de) * 1989-06-16 1996-10-02 Rexroth Mannesmann Gmbh Steuerventileinrichtung mit zwei Steuerblöcken und Pumpensteuerung für mehrere hydraulische Antriebe
DE4100988C2 (de) * 1991-01-15 2001-05-10 Linde Ag Hydraulisches Antriebssystem
DE69221799T2 (de) * 1991-04-15 1998-02-12 Hitachi Construction Machinery Hydraulisches steuersystem einer erdbaumaschine
US5448148A (en) * 1992-06-11 1995-09-05 Caterpillar Inc. Apparatus for positioning an excavator housing
AU708806B2 (en) * 1996-04-19 1999-08-12 Karl Obermoser Hydraulic ram pump
JP2000087904A (ja) * 1998-09-14 2000-03-28 Komatsu Ltd 圧油供給装置
JP3943779B2 (ja) * 1999-01-19 2007-07-11 日立建機株式会社 土木・建設機械の油圧駆動装置
DE19911440C2 (de) * 1999-03-04 2002-09-19 Komatsu Mining Germany Gmbh Vorrichtung und Verfahren zur Ansteuerung einer Hydraulikanlage einer Baumaschine, insbesondere eines Hydraulikbaggers
JP3859405B2 (ja) * 1999-10-01 2006-12-20 カヤバ工業株式会社 フェールセーフ回路
US6357231B1 (en) * 2000-05-09 2002-03-19 Clark Equipment Company Hydraulic pump circuit for mini excavators
CA2374901C (en) 2002-03-07 2005-05-24 Leon's Mfg. Company Inc. Loader drive system
FI20030115A (fi) * 2003-01-24 2004-07-25 Sandvik Tamrock Oy Hydraulijärjestelmä louhintalaitetta varten ja menetelmä kallioporakoneen tehon säätämiseksi
DE10336334B3 (de) * 2003-08-08 2005-08-04 Cnh Baumaschinen Gmbh Hydraulisches Steuersystem für Baumaschinenen, insbesondere für Bagger
JP4151597B2 (ja) * 2004-03-31 2008-09-17 コベルコ建機株式会社 油圧制御回路および建設機械
JP4541209B2 (ja) * 2005-03-31 2010-09-08 ナブテスコ株式会社 油圧回路
KR100665113B1 (ko) * 2005-12-09 2007-01-04 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 중장비의 유압회로
CN102536932A (zh) * 2012-01-11 2012-07-04 中联重科股份有限公司 压缩垃圾车及其液压系统
DE102012209142A1 (de) 2012-05-31 2013-12-05 Putzmeister Engineering Gmbh Hydrauliksystem
JP6643913B2 (ja) * 2016-02-16 2020-02-12 株式会社クボタ 油圧ブロック
US9677577B1 (en) * 2016-12-09 2017-06-13 Ellicott Dredge Enterprises, Llc Dredge having modular hydraulic manifolds
IT201700107028A1 (it) * 2017-09-25 2019-03-25 Tesmec Spa Apparecchiatura idraulica per la tesatura di conduttori per elettrodotti

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US2643516A (en) * 1951-12-08 1953-06-30 Goodman Mfg Co Fluid pressure system
US2979908A (en) * 1960-01-04 1961-04-18 Warner Swasey Co Hydraulic control systems
US3146593A (en) * 1960-04-18 1964-09-01 Parker Hannifin Corp Dual pump system and control valve assembly therefor
US3037354A (en) * 1961-05-02 1962-06-05 Hydraulic Unit Specialities Co Hydraulic apparatus for variable load systems
US3183977A (en) * 1962-12-03 1965-05-18 Allis Chalmers Mfg Co Tractor power lift system
US3386344A (en) * 1966-09-30 1968-06-04 Caterpillar Tractor Co Self-loading scraper hydraulic circuit with diverter
US3535877A (en) * 1969-05-09 1970-10-27 Gen Signal Corp Three-pump hydraulic system incorporating an unloader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50119178A (US06312121-20011106-C00033.png) * 1974-03-11 1975-09-18
JPS539346B2 (US06312121-20011106-C00033.png) * 1974-03-11 1978-04-05

Also Published As

Publication number Publication date
SE366098B (US06312121-20011106-C00033.png) 1974-04-08
US3720059A (en) 1973-03-13
DE1952034A1 (de) 1971-04-22
JPS5417114B1 (US06312121-20011106-C00033.png) 1979-06-27
FR2065949A5 (US06312121-20011106-C00033.png) 1971-08-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee