JP2001336177A - 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 - Google Patents

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

Info

Publication number
JP2001336177A
JP2001336177A JP2000161468A JP2000161468A JP2001336177A JP 2001336177 A JP2001336177 A JP 2001336177A JP 2000161468 A JP2000161468 A JP 2000161468A JP 2000161468 A JP2000161468 A JP 2000161468A JP 2001336177 A JP2001336177 A JP 2001336177A
Authority
JP
Japan
Prior art keywords
hydraulic
pilot
control valve
oil
boom
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.)
Pending
Application number
JP2000161468A
Other languages
English (en)
Japanese (ja)
Inventor
Yutaka Onoe
裕 尾上
Yasushi Tanaka
泰 田中
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
Priority to JP2000161468A priority Critical patent/JP2001336177A/ja
Priority to DE60143698T priority patent/DE60143698D1/de
Priority to PCT/JP2001/004625 priority patent/WO2001092651A1/ja
Priority to EP01934472A priority patent/EP1300519B1/de
Publication of JP2001336177A publication Critical patent/JP2001336177A/ja
Pending 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)
  • Component Parts Of Construction Machinery (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
JP2000161468A 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 Pending JP2001336177A (ja)

Priority Applications (4)

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
DE60143698T DE60143698D1 (de) 2000-05-31 2001-05-31 Baumaschine mit einem hydraulischen kreislauf und notbetriebsverfahren eines anbaugerätes.
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
EP01934472A EP1300519B1 (de) 2000-05-31 2001-05-31 Baumaschine mit einem hydraulischen kreislauf und notbetriebsverfahren eines anbaugerätes.

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
JP2001336177A true JP2001336177A (ja) 2001-12-07

Family

ID=18665488

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2000161468A Pending 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

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006028182A1 (ja) * 2004-09-10 2006-03-16 Hitashi Construction Machinery Co., Ltd. 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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9085873B2 (en) 2011-12-23 2015-07-21 Caterpillar Inc. Hydraulic system for controlling a work implement
US9708796B2 (en) 2014-09-25 2017-07-18 Cnh Industrial America Llc Hydraulic valve
US9790964B2 (en) 2014-09-25 2017-10-17 Cnh Industrial America Llc Hydraulic system

Family Cites Families (5)

* 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
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006028182A1 (ja) * 2004-09-10 2006-03-16 Hitashi Construction Machinery Co., Ltd. 作業機械
US7464493B2 (en) 2004-09-10 2008-12-16 Hitachi Construction Machinery Co., Ltd. Work machine
KR101031128B1 (ko) 2004-09-10 2011-04-27 히다찌 겐끼 가부시키가이샤 작업 기계
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

Also Published As

Publication number Publication date
EP1300519A9 (de) 2003-08-06
EP1300519A1 (de) 2003-04-09
WO2001092651A1 (fr) 2001-12-06
EP1300519A4 (de) 2009-03-11
DE60143698D1 (de) 2011-02-03
EP1300519B1 (de) 2010-12-22

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