JP2004205019A5 - - Google Patents

Download PDF

Info

Publication number
JP2004205019A5
JP2004205019A5 JP2002378158A JP2002378158A JP2004205019A5 JP 2004205019 A5 JP2004205019 A5 JP 2004205019A5 JP 2002378158 A JP2002378158 A JP 2002378158A JP 2002378158 A JP2002378158 A JP 2002378158A JP 2004205019 A5 JP2004205019 A5 JP 2004205019A5
Authority
JP
Japan
Prior art keywords
pump
supplied
section
oil
parallel
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.)
Granted
Application number
JP2002378158A
Other languages
English (en)
Other versions
JP3992612B2 (ja
JP2004205019A (ja
Filing date
Publication date
Application filed filed Critical
Priority to JP2002378158A priority Critical patent/JP3992612B2/ja
Priority claimed from JP2002378158A external-priority patent/JP3992612B2/ja
Priority to US10/649,601 priority patent/US7069674B2/en
Priority to DE10339428A priority patent/DE10339428B4/de
Priority to FR0315452A priority patent/FR2849457B1/fr
Publication of JP2004205019A publication Critical patent/JP2004205019A/ja
Publication of JP2004205019A5 publication Critical patent/JP2004205019A5/ja
Application granted granted Critical
Publication of JP3992612B2 publication Critical patent/JP3992612B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Claims (1)

  1. 第１ポンプおよび第２ポンプからの圧油を左右走行用のセクションに独立供給するとともに、左右走行用のセクションの油を合流して、フロント作業装置用のセクションに供給するよう構成し、
    第３ポンプからの圧油を、旋回用のセクションにおけるセンター油路、および、旋回用のセクションと並列に配置されるとともに絞りを介在したパラレル油路を経てフロント作業装置用のセクションに供給するよう構成し、
    かつ、フロント作業系の検出負荷に応じて前記第１ポンプおよび第２ポンプを流量制御するロードセンシングシステムを備えてあることを特徴とするバックホウの油圧回路構造。
JP2002378158A 2002-12-26 2002-12-26 バックホウの油圧回路構造 Expired - Fee Related JP3992612B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2002378158A JP3992612B2 (ja) 2002-12-26 2002-12-26 バックホウの油圧回路構造
US10/649,601 US7069674B2 (en) 2002-12-26 2003-08-26 Hydraulic circuit for backhoe
DE10339428A DE10339428B4 (de) 2002-12-26 2003-08-27 Hydraulikkreis für Löffelbagger
FR0315452A FR2849457B1 (fr) 2002-12-26 2003-12-26 Circuit hydraulique pour pelle mecanique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002378158A JP3992612B2 (ja) 2002-12-26 2002-12-26 バックホウの油圧回路構造

Publications (3)

Publication Number Publication Date
JP2004205019A JP2004205019A (ja) 2004-07-22
JP2004205019A5 true JP2004205019A5 (ja) 2005-08-25
JP3992612B2 JP3992612B2 (ja) 2007-10-17

Family

ID=32501135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002378158A Expired - Fee Related JP3992612B2 (ja) 2002-12-26 2002-12-26 バックホウの油圧回路構造

Country Status (4)

Country Link
US (1) US7069674B2 (ja)
JP (1) JP3992612B2 (ja)
DE (1) DE10339428B4 (ja)
FR (1) FR2849457B1 (ja)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3819699B2 (ja) * 2000-10-20 2006-09-13 日立建機株式会社 油圧走行車両
US7047735B2 (en) * 2004-07-30 2006-05-23 Deere & Company Increasing hydraulic flow to tractor attachments
KR100752115B1 (ko) * 2004-12-30 2007-08-24 두산인프라코어 주식회사 굴삭기의 유압펌프 제어시스템
JP4781708B2 (ja) * 2005-04-21 2011-09-28 株式会社クボタ 作業車輌の油圧システム
JP4502890B2 (ja) * 2005-06-30 2010-07-14 株式会社クボタ バックホウの油圧回路構造
KR100641397B1 (ko) * 2005-09-15 2006-11-01 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 유압제어시스템
US20090090102A1 (en) * 2006-05-03 2009-04-09 Wilfred Busse Method of reducing the load of one or more engines in a large hydraulic excavator
KR100800080B1 (ko) * 2006-08-11 2008-02-01 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 건설기계의 유압회로
JP4302724B2 (ja) * 2006-09-29 2009-07-29 株式会社クボタ バックホーの油圧システム
KR100886476B1 (ko) * 2007-03-12 2009-03-05 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 건설기계용 유압회로
KR100939802B1 (ko) * 2007-09-17 2010-02-02 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 중장비용 유압회로
JP4825765B2 (ja) * 2007-09-25 2011-11-30 株式会社クボタ バックホーの油圧システム
US8191290B2 (en) 2008-11-06 2012-06-05 Purdue Research Foundation Displacement-controlled hydraulic system for multi-function machines
US20110056194A1 (en) * 2009-09-10 2011-03-10 Bucyrus International, Inc. Hydraulic system for heavy equipment
US20110056192A1 (en) * 2009-09-10 2011-03-10 Robert Weber Technique for controlling pumps in a hydraulic system
JP5383591B2 (ja) * 2010-05-24 2014-01-08 日立建機株式会社 建設機械の油圧駆動装置
JP5528276B2 (ja) * 2010-09-21 2014-06-25 株式会社クボタ 作業機の油圧システム
US8626403B2 (en) 2010-10-06 2014-01-07 Caterpillar Global Mining Llc Energy management and storage system
US8606451B2 (en) 2010-10-06 2013-12-10 Caterpillar Global Mining Llc Energy system for heavy equipment
US8718845B2 (en) 2010-10-06 2014-05-06 Caterpillar Global Mining Llc Energy management system for heavy equipment
US8944103B2 (en) 2011-08-31 2015-02-03 Caterpillar Inc. Meterless hydraulic system having displacement control valve
US8863509B2 (en) 2011-08-31 2014-10-21 Caterpillar Inc. Meterless hydraulic system having load-holding bypass
US8966892B2 (en) 2011-08-31 2015-03-03 Caterpillar Inc. Meterless hydraulic system having restricted primary makeup
US9051714B2 (en) 2011-09-30 2015-06-09 Caterpillar Inc. Meterless hydraulic system having multi-actuator circuit
US8966891B2 (en) 2011-09-30 2015-03-03 Caterpillar Inc. Meterless hydraulic system having pump protection
US9151018B2 (en) 2011-09-30 2015-10-06 Caterpillar Inc. Closed-loop hydraulic system having energy recovery
US9057389B2 (en) 2011-09-30 2015-06-16 Caterpillar Inc. Meterless hydraulic system having multi-actuator circuit
US8978374B2 (en) 2011-10-21 2015-03-17 Caterpillar Inc. Meterless hydraulic system having flow sharing and combining functionality
US8984873B2 (en) 2011-10-21 2015-03-24 Caterpillar Inc. Meterless hydraulic system having flow sharing and combining functionality
US8978373B2 (en) 2011-10-21 2015-03-17 Caterpillar Inc. Meterless hydraulic system having flow sharing and combining functionality
US8893490B2 (en) 2011-10-21 2014-11-25 Caterpillar Inc. Hydraulic system
US8943819B2 (en) 2011-10-21 2015-02-03 Caterpillar Inc. Hydraulic system
US8910474B2 (en) 2011-10-21 2014-12-16 Caterpillar Inc. Hydraulic system
US8919114B2 (en) 2011-10-21 2014-12-30 Caterpillar Inc. Closed-loop hydraulic system having priority-based sharing
US9080310B2 (en) 2011-10-21 2015-07-14 Caterpillar Inc. Closed-loop hydraulic system having regeneration configuration
US9068578B2 (en) 2011-10-21 2015-06-30 Caterpillar Inc. Hydraulic system having flow combining capabilities
US8973358B2 (en) 2011-10-21 2015-03-10 Caterpillar Inc. Closed-loop hydraulic system having force modulation
US9279236B2 (en) 2012-06-04 2016-03-08 Caterpillar Inc. Electro-hydraulic system for recovering and reusing potential energy
US9190852B2 (en) 2012-09-21 2015-11-17 Caterpillar Global Mining Llc Systems and methods for stabilizing power rate of change within generator based applications
US9290912B2 (en) 2012-10-31 2016-03-22 Caterpillar Inc. Energy recovery system having integrated boom/swing circuits
CN103062140B (zh) * 2013-01-17 2014-01-08 江苏恒立高压油缸股份有限公司 基于合流控制方式的液压装置
US9290911B2 (en) 2013-02-19 2016-03-22 Caterpillar Inc. Energy recovery system for hydraulic machine
KR101982688B1 (ko) * 2013-03-22 2019-05-27 가부시키가이샤 히다치 겡키 티에라 건설 기계의 유압 구동 장치
JP6034773B2 (ja) * 2013-11-13 2016-11-30 株式会社クボタ 作業機
JP6539462B2 (ja) * 2015-03-10 2019-07-03 日立建機株式会社 ハイブリッド作業機械
JP5876185B1 (ja) * 2015-08-27 2016-03-02 憲平 山路 電磁比例制御弁システム
KR101779860B1 (ko) * 2015-10-28 2017-09-19 가부시키가이샤 고마쓰 세이사쿠쇼 건설 기계의 구동 장치

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4559965A (en) * 1984-01-09 1985-12-24 J. I. Case Company Multiple compensating unloading valve circuit
US4663936A (en) * 1984-06-07 1987-05-12 Eaton Corporation Load sensing priority system with bypass control
JPH01223276A (ja) 1988-02-29 1989-09-06 Mazda Motor Corp ドアストライカの取付構造及びその取付方法
JPH01223226A (ja) * 1988-03-01 1989-09-06 Kubota Ltd バックホウ作業車の油圧回路
JPH0751796B2 (ja) 1989-04-18 1995-06-05 株式会社クボタ バックホウの油圧回路
JP2635206B2 (ja) * 1990-09-06 1997-07-30 株式会社クボタ 掘削作業車の油圧回路構造
JP3221268B2 (ja) * 1995-01-20 2001-10-22 日立建機株式会社 油圧ショベルの油圧回路
JP3153118B2 (ja) 1996-02-01 2001-04-03 新キャタピラー三菱株式会社 油圧式作業機械の油圧回路
EP1798346B1 (en) * 1996-02-28 2010-12-22 Komatsu Ltd. Control device for hydraulic drive machine
US5722190A (en) * 1996-03-15 1998-03-03 The Gradall Company Priority biased load sense hydraulic system for hydraulic excavators
US5784945A (en) * 1997-05-14 1998-07-28 Caterpillar Inc. Method and apparatus for determining a valve transform
US6029445A (en) * 1999-01-20 2000-02-29 Case Corporation Variable flow hydraulic system
JP2001050209A (ja) 1999-08-10 2001-02-23 Kayaba Ind Co Ltd 建設車両用油圧回路
JP3854027B2 (ja) * 2000-01-12 2006-12-06 日立建機株式会社 油圧駆動装置
JP3753595B2 (ja) 2000-06-15 2006-03-08 株式会社クボタ バックホウの油圧装置
JP4454131B2 (ja) * 2000-09-26 2010-04-21 日立建機株式会社 建設機械の油圧再生装置及び建設機械
JP3748775B2 (ja) 2001-01-05 2006-02-22 株式会社クボタ バックホウの油圧装置
JP4548959B2 (ja) * 2001-03-19 2010-09-22 カヤバ工業株式会社 油圧制御装置
JP4137431B2 (ja) 2001-11-09 2008-08-20 ナブテスコ株式会社 油圧回路

Similar Documents

Publication Publication Date Title
JP2004205019A5 (ja)
EP2267229A3 (en) Hydraulic control system for the upper swing structure of an excavator
DK2102529T3 (da) Hydrostatisk køretøjsdrev
JP2009538781A (ja) 車両用サスペンションシステム
DE60231287D1 (de) Steuersystem eines Stuhls
JP2005061477A (ja) 油圧駆動装置
ATE455213T1 (de) Kompaktbagger
DE502005002764D1 (de) Hydraulische lenkung mit absicherung gegen unkontrollierte lenkbewegungen
JP2016145604A5 (ja)
JP2004204909A5 (ja)
JP2004176920A5 (ja)
JPS6331164U (ja)
ATE554044T1 (de) Kran mit ausgeglichenem hauptausleger und hilfsausleger, der senkrecht gehalten werden kann
JPH0262953U (ja)
JPH0175604U (ja)
JPH0247252U (ja)
JP2581863Y2 (ja) 往復動用切換弁の油圧回路
ATE338889T1 (de) Ventil für fluidsystem
SE0100627L (sv) Hydraulisk styranordning
JP2000120616A5 (ja)
JPS5914533Y2 (ja) ド−ザ付バツクホウ作業車の流体圧回路
JPH01128466U (ja)
JPS5927526Y2 (ja) 優先回路装置
JPH072726Y2 (ja) バツクホ−の油圧回路
SE0100480D0 (sv) Hydraulic steering arrangement