EP1300519A4 - Circuit hydraulique et procede d'entrainement d'urgence de fixation pour machines de construction - Google Patents

Circuit hydraulique et procede d'entrainement d'urgence de fixation pour machines de construction

Info

Publication number
EP1300519A4
EP1300519A4 EP01934472A EP01934472A EP1300519A4 EP 1300519 A4 EP1300519 A4 EP 1300519A4 EP 01934472 A EP01934472 A EP 01934472A EP 01934472 A EP01934472 A EP 01934472A EP 1300519 A4 EP1300519 A4 EP 1300519A4
Authority
EP
European Patent Office
Prior art keywords
construction machinery
attachment
hydraulic circuit
pilot
control valve
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
EP01934472A
Other languages
German (de)
English (en)
Other versions
EP1300519B1 (fr
EP1300519A9 (fr
EP1300519A1 (fr
Inventor
Hiroshi Onoue
Yasushi Tanaka
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 EP1300519A1 publication Critical patent/EP1300519A1/fr
Publication of EP1300519A9 publication Critical patent/EP1300519A9/fr
Publication of EP1300519A4 publication Critical patent/EP1300519A4/fr
Application granted granted Critical
Publication of EP1300519B1 publication Critical patent/EP1300519B1/fr
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
    • E02F9/226—Safety arrangements, e.g. hydraulic driven fans, preventing cavitation, leakage, overheating
    • 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
    • E02F9/2278—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

La présente invention concerne un circuit hydraulique destiné à des machines de construction, comprenant une soupape de commande commandée par pilote hydraulique, destinée à commander une élément d'actionnement servant à entraîner une fixation frontale, et une conduite pilote servant à acheminer une pression pilote hydraulique jusqu'à la soupape de commande présentant un orifice d'entrée d'huile pressurisée permettant à une pompe hydraulique manuelle d'être connectée à ladite conduite. Selon l'invention, l'huile pressurisée est introduite dans la conduite pilote par l'orifice grâce à la pompe hydraulique manuelle de manière à faire basculer la soupape de commande, la fixation frontale pouvant être entraînée, en cas d'urgence, uniquement grâce à l'apport d'une très simple amélioration qui ne nécessite plus la présence d'une conduite de dérivation et d'une soupape de sélection.
EP01934472A 2000-05-31 2001-05-31 Machine de construction avec un circuit hydraulique et procédé d'entrainement d'urgence d'un équipement. Expired - Lifetime EP1300519B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000161468A JP2001336177A (ja) 2000-05-31 2000-05-31 建設機械の油圧回路およびアタッチメント緊急駆動方法
JP2000161468 2000-05-31
PCT/JP2001/004625 WO2001092651A1 (fr) 2000-05-31 2001-05-31 Circuit hydraulique et procede d'entrainement d'urgence de fixation pour machines de construction

Publications (4)

Publication Number Publication Date
EP1300519A1 EP1300519A1 (fr) 2003-04-09
EP1300519A9 EP1300519A9 (fr) 2003-08-06
EP1300519A4 true EP1300519A4 (fr) 2009-03-11
EP1300519B1 EP1300519B1 (fr) 2010-12-22

Family

ID=18665488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01934472A Expired - Lifetime EP1300519B1 (fr) 2000-05-31 2001-05-31 Machine de construction avec un circuit hydraulique et procédé d'entrainement d'urgence d'un équipement.

Country Status (4)

Country Link
EP (1) EP1300519B1 (fr)
JP (1) JP2001336177A (fr)
DE (1) DE60143698D1 (fr)
WO (1) WO2001092651A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4294563B2 (ja) 2004-09-10 2009-07-15 日立建機株式会社 作業機械
JP2011226104A (ja) * 2010-04-16 2011-11-10 Hitachi Constr Mach Co Ltd 長尺フロントの動力異常停止時降下装置と降下方法
US9085873B2 (en) 2011-12-23 2015-07-21 Caterpillar Inc. Hydraulic system for controlling a work implement
US9790964B2 (en) 2014-09-25 2017-10-17 Cnh Industrial America Llc Hydraulic system
US9708796B2 (en) 2014-09-25 2017-07-18 Cnh Industrial America Llc Hydraulic valve
WO2025063195A1 (fr) * 2023-09-20 2025-03-27 日立建機株式会社 Machine de travail

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0693630A (ja) * 1992-09-11 1994-04-05 Hitachi Constr Mach Co Ltd 作業機用バケット制御装置
JPH07317713A (ja) * 1994-05-27 1995-12-08 Yutani Heavy Ind Ltd 建設機械の油圧回路
JP2000096631A (ja) * 1998-09-18 2000-04-04 Hitachi Constr Mach Co Ltd 油圧ショベルの油圧回路

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5976659A (ja) 1982-10-25 1984-05-01 Nippon Kokan Kk <Nkk> 地金洗浄用バ−ナ−
JPH0617885Y2 (ja) * 1987-04-14 1994-05-11 セイレイ工業株式会社 バツクホ−における作業機の降下に対する安全装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0693630A (ja) * 1992-09-11 1994-04-05 Hitachi Constr Mach Co Ltd 作業機用バケット制御装置
JPH07317713A (ja) * 1994-05-27 1995-12-08 Yutani Heavy Ind Ltd 建設機械の油圧回路
JP2000096631A (ja) * 1998-09-18 2000-04-04 Hitachi Constr Mach Co Ltd 油圧ショベルの油圧回路

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0192651A1 *

Also Published As

Publication number Publication date
EP1300519B1 (fr) 2010-12-22
WO2001092651A1 (fr) 2001-12-06
EP1300519A9 (fr) 2003-08-06
DE60143698D1 (de) 2011-02-03
JP2001336177A (ja) 2001-12-07
EP1300519A1 (fr) 2003-04-09

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