JPS4865382A - - Google Patents

Info

Publication number
JPS4865382A
JPS4865382A JP47124012A JP12401272A JPS4865382A JP S4865382 A JPS4865382 A JP S4865382A JP 47124012 A JP47124012 A JP 47124012A JP 12401272 A JP12401272 A JP 12401272A JP S4865382 A JPS4865382 A JP S4865382A
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
JP47124012A
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 JPS4865382A publication Critical patent/JPS4865382A/ja
Pending legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2278Hydraulic circuits
    • E02F9/2296Systems with a variable displacement pump
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2221Control of flow rate; Load sensing arrangements
    • E02F9/2239Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2278Hydraulic circuits
    • E02F9/2292Systems with two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • F15B13/08Assemblies of units, each for the control of a single servomotor only
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/2053Type of pump
    • F15B2211/20546Type of pump variable capacity
    • F15B2211/20553Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/20Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205Systems with pumps
    • F15B2211/20576Systems with pumps with multiple pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/305Directional control characterised by the type of valves
    • F15B2211/3056Assemblies of multiple valves
    • F15B2211/3059Assemblies of multiple valves having multiple valves for multiple output members
    • F15B2211/30595Assemblies of multiple valves having multiple valves for multiple output members with additional valves between the groups of valves for multiple output members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/31Directional control characterised by the positions of the valve element
    • F15B2211/3105Neutral or centre positions
    • F15B2211/3116Neutral or centre positions the pump port being open in the centre position, e.g. so-called open centre
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/30Directional control
    • F15B2211/355Pilot pressure control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/76Control of force or torque of the output member
    • F15B2211/763Control of torque of the output member by means of a variable capacity motor, i.e. by a secondary control on the motor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/87169Supply and exhaust

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)
  • Multiple-Way Valves (AREA)
JP47124012A 1971-12-13 1972-12-12 Pending JPS4865382A (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20702871A 1971-12-13 1971-12-13

Publications (1)

Publication Number Publication Date
JPS4865382A true JPS4865382A (ja) 1973-09-08

Family

ID=22768912

Family Applications (2)

Application Number Title Priority Date Filing Date
JP47124012A Pending JPS4865382A (ja) 1971-12-13 1972-12-12
JP1980035746U Pending JPS55134505U (ja) 1971-12-13 1980-03-17

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP1980035746U Pending JPS55134505U (ja) 1971-12-13 1980-03-17

Country Status (8)

Country Link
US (1) US3759292A (ja)
JP (2) JPS4865382A (ja)
BE (1) BE792618A (ja)
CA (1) CA976839A (ja)
DE (1) DE2261626C2 (ja)
FR (1) FR2163536B1 (ja)
GB (1) GB1413689A (ja)
SE (1) SE390199B (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5880033A (ja) * 1981-11-02 1983-05-14 Kobe Steel Ltd 油圧シヨベルの油圧回路
EP0286683A1 (en) * 1986-09-01 1988-10-19 Hitachi Construction Machinery Co., Ltd. Hydraulic pilot type direction control valve
CN111051707A (zh) * 2017-08-15 2020-04-21 伊顿智能动力有限公司 滑阀

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4078681A (en) * 1976-08-24 1978-03-14 Caterpillar Tractor Co. Dual pump hydraulic control system with predetermined flow crossover provision
US4280397A (en) * 1978-04-27 1981-07-28 Joy Manufacturing Company Hydraulic fluid control apparatus
WO1980001940A1 (en) * 1979-03-05 1980-09-18 Mcwilliams O Balanced spool valve
DE3044171A1 (de) * 1980-11-24 1982-06-16 Linde Ag, 6200 Wiesbaden Antriebssystem mit mindestens zwei teilsystemen
JPS57120704A (en) * 1981-01-19 1982-07-27 Toshiba Mach Co Ltd Confluent composite control valve
JPS59186502U (ja) * 1983-05-31 1984-12-11 株式会社小松製作所 方向切換弁
DE3415621C3 (de) * 1983-06-13 1997-07-17 Husco Int Inc Hydraulisches Mehrwege-Steuerventil
US6397890B1 (en) * 1999-02-15 2002-06-04 Case Corp. Variable metering fluid control valve
ITBO20000473A1 (it) * 2000-07-31 2002-01-31 Hydrocontrol S P A Distributore oleodinamico , per il controllo dell' azionamento di un decespugliatore .
JP5087047B2 (ja) * 2009-06-18 2012-11-28 日立建機株式会社 油圧作業機械
CN102947599B (zh) * 2010-06-22 2015-03-11 日立建机株式会社 作业车辆的液压控制装置
US10024445B2 (en) * 2014-06-25 2018-07-17 Parker-Hannifin Corporation Reverse flow check valve in hydraulic valve with series circuit
US9387759B2 (en) 2014-09-22 2016-07-12 Caterpillar Inc. Flow divider free wheeling valve
JP6643913B2 (ja) * 2016-02-16 2020-02-12 株式会社クボタ 油圧ブロック
US11460053B2 (en) * 2020-03-16 2022-10-04 Parker-Hannifin Corporation Open center control valve configured to combine fluid flow received from multiple sources

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2879612A (en) * 1956-05-02 1959-03-31 Gar Wood Ind Inc Hydraulic drive for ditcher conveyor
US2979908A (en) * 1960-01-04 1961-04-18 Warner Swasey Co Hydraulic control systems
DE1159764B (de) * 1960-06-07 1963-12-19 Fritz Spierig Fa Hydraulische Steuereinrichtung zum Betrieb von hydraulisch betaetigten Arbeitsgeraeten
NL125372C (ja) * 1962-04-30 1900-01-01
AT246516B (de) * 1964-07-24 1966-04-25 Prerovske Strojirny Np Hydraulische Steuerung
GB1045030A (en) * 1964-09-30 1966-10-05 Dowty Hydraulic Units Ltd Fluid valves
DE1952034A1 (de) * 1969-10-15 1971-04-22 Linde Ag Steuereinrichtung fuer eine hydraulische Anlage und Ventil hierzu

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5880033A (ja) * 1981-11-02 1983-05-14 Kobe Steel Ltd 油圧シヨベルの油圧回路
JPS6311494B2 (ja) * 1981-11-02 1988-03-14 Kobe Steel Ltd
EP0286683A1 (en) * 1986-09-01 1988-10-19 Hitachi Construction Machinery Co., Ltd. Hydraulic pilot type direction control valve
EP0286683B1 (en) * 1986-09-01 1993-12-15 Hitachi Construction Machinery Co., Ltd. Hydraulic pilot type direction control valve
CN111051707A (zh) * 2017-08-15 2020-04-21 伊顿智能动力有限公司 滑阀
CN111051707B (zh) * 2017-08-15 2023-02-28 丹佛斯动力系统Ii技术有限公司 滑阀

Also Published As

Publication number Publication date
FR2163536B1 (ja) 1978-08-04
JPS55134505U (ja) 1980-09-24
US3759292A (en) 1973-09-18
DE2261626C2 (de) 1985-08-29
GB1413689A (en) 1975-11-12
FR2163536A1 (ja) 1973-07-27
SE390199B (sv) 1976-12-06
DE2261626A1 (de) 1973-06-14
BE792618A (fr) 1973-06-12
CA976839A (en) 1975-10-28

Similar Documents

Publication Publication Date Title
FR2163536B1 (ja)
ATA136472A (ja)
AR196074A1 (ja)
AU2658571A (ja)
AU2941471A (ja)
AU2684071A (ja)
AU2952271A (ja)
AU3005371A (ja)
AU2894671A (ja)
AU2875571A (ja)
AU2930871A (ja)
AU2473671A (ja)
AU2724971A (ja)
AU2854371A (ja)
AU2455871A (ja)
AU2880771A (ja)
AU2885171A (ja)
AR202997Q (ja)
AU2907471A (ja)
AU2927871A (ja)
AU2669471A (ja)
AU2415871A (ja)
AU1109576A (ja)
AU2938071A (ja)
AU2940971A (ja)