DE69720382D1 - Hydraulischer Schaltkreis für hydraulische Arbeitsmaschine - Google Patents

Hydraulischer Schaltkreis für hydraulische Arbeitsmaschine

Info

Publication number
DE69720382D1
DE69720382D1 DE69720382T DE69720382T DE69720382D1 DE 69720382 D1 DE69720382 D1 DE 69720382D1 DE 69720382 T DE69720382 T DE 69720382T DE 69720382 T DE69720382 T DE 69720382T DE 69720382 D1 DE69720382 D1 DE 69720382D1
Authority
DE
Germany
Prior art keywords
hydraulic
work machine
circuit
hydraulic circuit
hydraulic work
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
DE69720382T
Other languages
English (en)
Other versions
DE69720382T2 (de
Inventor
Kouji Ishikawa
Genroku Sugiyama
Tsukasa Toyooka
Tsuyoshi Nakamura
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
Application granted granted Critical
Publication of DE69720382D1 publication Critical patent/DE69720382D1/de
Publication of DE69720382T2 publication Critical patent/DE69720382T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • E02F9/2225—Control of flow rate; Load sensing arrangements using pressure-compensating valves
    • 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
    • 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
    • E02F9/2235—Control of flow rate; Load sensing arrangements using one or more variable displacement pumps including an electronic controller
    • 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
    • E02F9/2282—Systems using center bypass type changeover valves
    • 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
    • E02F9/2285—Pilot-operated systems
    • 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

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)
DE69720382T 1996-12-10 1997-12-04 Hydraulischer Schaltkreis für hydraulische Arbeitsmaschine Expired - Lifetime DE69720382T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP32987696 1996-12-10
JP32987696A JP3549989B2 (ja) 1996-12-10 1996-12-10 油圧作業機の油圧回路装置

Publications (2)

Publication Number Publication Date
DE69720382D1 true DE69720382D1 (de) 2003-05-08
DE69720382T2 DE69720382T2 (de) 2004-02-05

Family

ID=18226241

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69720382T Expired - Lifetime DE69720382T2 (de) 1996-12-10 1997-12-04 Hydraulischer Schaltkreis für hydraulische Arbeitsmaschine

Country Status (6)

Country Link
US (1) US5974796A (de)
EP (1) EP0848113B1 (de)
JP (1) JP3549989B2 (de)
KR (1) KR100228539B1 (de)
CN (1) CN1167887C (de)
DE (1) DE69720382T2 (de)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3339821B2 (ja) * 1998-06-29 2002-10-28 新キャタピラー三菱株式会社 作業機械のロック方法およびそのロック装置
JP3865590B2 (ja) * 2001-02-19 2007-01-10 日立建機株式会社 建設機械の油圧回路
ITMI20010202U1 (it) * 2001-04-05 2002-10-07 Intes S P A Macchina per tendere nastri migliorata
US20050055479A1 (en) * 2002-11-21 2005-03-10 Aviad Zer Multi-module circuit card with inter-module direct memory access
CN100392257C (zh) * 2003-01-14 2008-06-04 日立建机株式会社 液压作业机
JP3952994B2 (ja) * 2003-06-13 2007-08-01 コベルコ建機株式会社 建設機械
DE10327519A1 (de) * 2003-06-17 2005-01-20 Ortlinghaus-Werke Gmbh Hydraulische Schaltung
KR100518769B1 (ko) * 2003-06-19 2005-10-05 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 유압펌프 토출유량 제어회로
US7209995B2 (en) * 2003-12-09 2007-04-24 Sandisk Corporation Efficient connection between modules of removable electronic circuit cards
DE10358727B3 (de) * 2003-12-15 2005-08-25 Brueninghaus Hydromatik Gmbh Summenleistungsregelvorrichtung
KR101056135B1 (ko) * 2004-03-26 2011-08-10 히다치 겡키 가부시키 가이샤 경전제어방법, 경전제어장치, 경전제어프로그램을 기록한 컴퓨터로 판독가능한 기록매체 및 건설기계
KR100621981B1 (ko) * 2004-04-08 2006-09-14 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 중장비용 조이스틱 중립상태에서의 유량 보상방법
US7331175B2 (en) * 2005-08-31 2008-02-19 Caterpillar Inc. Hydraulic system having area controlled bypass
US7320216B2 (en) * 2005-10-31 2008-01-22 Caterpillar Inc. Hydraulic system having pressure compensated bypass
US7530225B2 (en) * 2006-05-23 2009-05-12 Volvo Construction Equipment Holding Sweden Ab Apparatus for increasing operation speed of boom on excavators
JP2009097579A (ja) * 2007-10-15 2009-05-07 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd 建設機械の油圧回路
JP2009115201A (ja) * 2007-11-06 2009-05-28 Sumitomo (Shi) Construction Machinery Manufacturing Co Ltd 建設機械の油圧回路
EP2275299A4 (de) * 2008-04-11 2017-12-06 Sumitomo Heavy Industries, LTD. Arbeitsmaschine
JP5523028B2 (ja) * 2009-09-04 2014-06-18 日立建機株式会社 油圧作業機械の油圧駆動装置
US8661804B2 (en) * 2009-12-11 2014-03-04 Caterpillar Inc. Control system for swashplate pump
US8676474B2 (en) * 2010-12-30 2014-03-18 Caterpillar Inc. Machine control system and method
CN102269190B (zh) * 2011-07-04 2013-06-05 中联重科股份有限公司 液压控制回路
WO2013037582A1 (de) * 2011-09-16 2013-03-21 Robert Bosch Gmbh Versteileinrichtung für eine hydrostatische maschine und hydrostatische maschine
WO2013063749A1 (zh) * 2011-10-31 2013-05-10 中联重科股份有限公司 液压控制回路
CN102374203B (zh) * 2011-10-31 2013-03-13 中联重科股份有限公司 液压控制回路
KR20140103924A (ko) * 2011-11-30 2014-08-27 볼보 컨스트럭션 이큅먼트 에이비 레귤레이터에 의해 제어되는 미터 아웃 유압 제어시스템
US20150316078A1 (en) * 2012-12-14 2015-11-05 Volvo Construction Equipment Ab Hydraulic circuit for construction machines
KR101958026B1 (ko) * 2012-12-26 2019-03-13 두산인프라코어 주식회사 배기가스 후처리장치 강제재생의 유압회로 시스템
JP6228430B2 (ja) * 2013-10-31 2017-11-08 川崎重工業株式会社 液圧駆動装置
JP6415839B2 (ja) * 2014-03-31 2018-10-31 住友重機械工業株式会社 ショベル
JP2016169818A (ja) * 2015-03-13 2016-09-23 川崎重工業株式会社 油圧駆動システム
DE102015208077A1 (de) * 2015-04-30 2016-11-03 Deere & Company Generatoreinheit
JP6605519B2 (ja) * 2017-02-03 2019-11-13 日立建機株式会社 建設機械
KR20220042059A (ko) * 2019-08-08 2022-04-04 스미토모 겐키 가부시키가이샤 쇼벨
JP7324114B2 (ja) * 2019-10-10 2023-08-09 日立建機株式会社 建設機械

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US2455837A (en) * 1942-11-27 1948-12-07 Hydraulic Dev Corp Inc Pump control means for hydraulic systems
US3563675A (en) * 1968-10-11 1971-02-16 Sundstrand Corp Hydraulic pump
US3971216A (en) * 1974-06-19 1976-07-27 The Scott & Fetzer Company Load responsive system with synthetic signal
US4730543A (en) * 1985-06-17 1988-03-15 Hi-Ranger, Inc. Closed center hydraulic valve control system for aerial lift
JPS6226630A (ja) * 1985-07-27 1987-02-04 Konishiroku Photo Ind Co Ltd 磁気記録媒体
KR910009257B1 (ko) * 1985-09-07 1991-11-07 히다찌 겡끼 가부시기가이샤 유압건설기계의 제어시스템
US4838755A (en) * 1987-02-19 1989-06-13 Deere & Company Automatic engine control for an excavator
KR930009513B1 (ko) * 1989-01-18 1993-10-06 히다찌 겐끼 가부시기가이샤 건설기계의 유압구동장치
JP3007196B2 (ja) * 1991-08-31 2000-02-07 株式会社三共 玉送出装置
JPH0628304A (ja) * 1992-05-22 1994-02-04 Sharp Corp マルチリピータ
US5630317A (en) * 1993-03-26 1997-05-20 Kabushiki Kaisha Komatsu Seisakusho Controller for hydraulic drive machine

Also Published As

Publication number Publication date
EP0848113B1 (de) 2003-04-02
US5974796A (en) 1999-11-02
CN1167887C (zh) 2004-09-22
KR100228539B1 (ko) 1999-11-01
JPH10169604A (ja) 1998-06-23
KR19980063919A (ko) 1998-10-07
JP3549989B2 (ja) 2004-08-04
EP0848113A1 (de) 1998-06-17
CN1184899A (zh) 1998-06-17
DE69720382T2 (de) 2004-02-05

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Legal Events

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8364 No opposition during term of opposition