DE69416636T2 - Flüssigkeits-Steuersystem - Google Patents

Flüssigkeits-Steuersystem

Info

Publication number
DE69416636T2
DE69416636T2 DE69416636T DE69416636T DE69416636T2 DE 69416636 T2 DE69416636 T2 DE 69416636T2 DE 69416636 T DE69416636 T DE 69416636T DE 69416636 T DE69416636 T DE 69416636T DE 69416636 T2 DE69416636 T2 DE 69416636T2
Authority
DE
Germany
Prior art keywords
control system
liquid control
liquid
control
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 - Lifetime
Application number
DE69416636T
Other languages
English (en)
Other versions
DE69416636D1 (de
Inventor
Hideyo Kato
Masami Ochiai
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.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of DE69416636D1 publication Critical patent/DE69416636D1/de
Application granted granted Critical
Publication of DE69416636T2 publication Critical patent/DE69416636T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E02F9/2296—Systems with a variable displacement pump
    • 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
    • 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
    • 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
    • E02F9/2232—Control of flow rate; Load sensing arrangements using one or more variable displacement 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
    • F15B2211/20546—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
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to load 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
    • F15B2211/50—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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
DE69416636T 1993-11-08 1994-11-08 Flüssigkeits-Steuersystem Expired - Lifetime DE69416636T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27836593A JP3477687B2 (ja) 1993-11-08 1993-11-08 流量制御装置

Publications (2)

Publication Number Publication Date
DE69416636D1 DE69416636D1 (de) 1999-04-01
DE69416636T2 true DE69416636T2 (de) 1999-09-02

Family

ID=17596331

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69416636T Expired - Lifetime DE69416636T2 (de) 1993-11-08 1994-11-08 Flüssigkeits-Steuersystem

Country Status (5)

Country Link
US (1) US5460001A (de)
EP (1) EP0652376B1 (de)
JP (1) JP3477687B2 (de)
KR (1) KR100297882B1 (de)
DE (1) DE69416636T2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9420394D0 (en) * 1994-10-10 1994-11-23 Trinova Ltd An hydraulic circuit controlling an actuator
US5809862A (en) * 1995-08-04 1998-09-22 Dallman; Jimmie J. Flotation control system
JP3606976B2 (ja) * 1995-12-26 2005-01-05 日立建機株式会社 油圧作業機の油圧制御システム
US6050090A (en) * 1996-06-11 2000-04-18 Kabushiki Kaisha Kobe Seiko Sho Control apparatus for hydraulic excavator
DE19904616A1 (de) * 1999-02-05 2000-08-10 Mannesmann Rexroth Ag Steueranordnung für wenigstens zwei hydraulische Verbraucher und Druckdifferenzventil dafür
US6931847B1 (en) * 2004-03-04 2005-08-23 Sauer-Danfoss, Inc. Flow sharing priority circuit for open circuit systems with several actuators per pump
JP2006283785A (ja) * 2005-03-31 2006-10-19 Nabtesco Corp 油圧回路およびその弁装置
US20090223765A1 (en) * 2008-03-10 2009-09-10 Marinus Bernard Bosma Hinged checkpoint-friendly trolley bag with removable laptop case and method of using same
US20090314594A1 (en) * 2008-06-19 2009-12-24 Doug Harrison TSA Computer Travel Bag
JP5368294B2 (ja) * 2009-12-28 2013-12-18 日立住友重機械建機クレーン株式会社 カウンタウエイトの懸垂装置および移動式クレーン
EP2589822B1 (de) * 2010-06-30 2016-08-31 Volvo Construction Equipment AB Steuerungseinheit für eine hydraulikpumpe einer baumaschine
EP2660478B1 (de) * 2010-12-27 2017-03-15 Volvo Construction Equipment AB Hydraulisches steuersystem eines auslegerdrehgelenkverbundantriebs einer einer baumaschine
JP5878811B2 (ja) * 2012-04-10 2016-03-08 日立建機株式会社 建設機械の油圧駆動装置
JP5661084B2 (ja) * 2012-11-13 2015-01-28 株式会社神戸製鋼所 作業機械の油圧駆動装置
JP5661085B2 (ja) 2012-11-13 2015-01-28 株式会社神戸製鋼所 作業機械の油圧駆動装置
EP2947211B1 (de) * 2013-01-18 2018-09-26 Volvo Construction Equipment AB Flusssteuerungsvorrichtung und flusssteuerungsverfahren für eine baumaschine
US10072681B1 (en) 2014-06-23 2018-09-11 Vecna Technologies, Inc. Controlling a fluid actuated device
US10563676B1 (en) * 2014-06-23 2020-02-18 Vecna Robotics, Inc. Hydrosymbiosis
CN115233766B (zh) * 2022-07-08 2023-11-28 湖南工业职业技术学院 一种挖掘机液压控制系统及液压负流量控制方法
CN117686042B (zh) * 2024-02-02 2024-05-24 成都秦川物联网科技股份有限公司 一种物联网超声波水表阀控联动方法、系统及设备

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401009A (en) * 1972-11-08 1983-08-30 Control Concepts, Inc. Closed center programmed valve system with load sense
US4523430A (en) * 1981-03-19 1985-06-18 Daikin Kogyo Co., Ltd. Fluid flow control system
JP2582266B2 (ja) * 1987-09-29 1997-02-19 新キヤタピラー三菱株式会社 流体圧制御システム
JP3061826B2 (ja) * 1988-05-10 2000-07-10 日立建機株式会社 建設機械の油圧駆動装置
KR940008638B1 (ko) * 1988-07-08 1994-09-24 히다찌 겐끼 가부시기가이샤 건설기계의 유압구동장치
KR920007650B1 (ko) * 1989-02-20 1992-09-14 히다찌 겐끼 가부시기가이샤 작업기계의 유압회로장치
EP0440802B1 (de) * 1989-07-27 1995-10-18 Hitachi Construction Machinery Co., Ltd. Anordnung zur steuerung einer hydraulischen pumpe
JPH0374605A (ja) * 1989-08-16 1991-03-29 Komatsu Ltd 作業機シリンダの圧油供給装置
AT393207B (de) * 1990-03-23 1991-09-10 Kitzberger Max Mag Bausatz fuer ein moebelstueck
US4977928A (en) * 1990-05-07 1990-12-18 Caterpillar Inc. Load sensing hydraulic system
US5271227A (en) * 1990-05-15 1993-12-21 Kabushiki Kaisha Komatsu Seisakusho Hydraulic apparatus with pressure compensating valves
KR970001723B1 (ko) * 1990-09-11 1997-02-14 히다찌 겐끼 가부시기가이샤 건설기계의 유압제어장치
JP3124094B2 (ja) * 1991-12-25 2001-01-15 カヤバ工業株式会社 複数アクチュエータの制御装置
US5438832A (en) * 1992-08-31 1995-08-08 Kayaba Industry Co., Ltd. Variable displacement pump with adjustment responsive to drive motor speed

Also Published As

Publication number Publication date
DE69416636D1 (de) 1999-04-01
US5460001A (en) 1995-10-24
JPH07133802A (ja) 1995-05-23
KR950014612A (ko) 1995-06-16
EP0652376B1 (de) 1999-02-24
KR100297882B1 (ko) 2001-10-24
JP3477687B2 (ja) 2003-12-10
EP0652376A1 (de) 1995-05-10

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition