EP0919670A4 - DEVICE FOR REDUCING THE JUMP AT THE END OF THE MOVEMENT OF A CONSTRUCTION MACHINE WITH A TWO-PIECE BOOM - Google Patents

DEVICE FOR REDUCING THE JUMP AT THE END OF THE MOVEMENT OF A CONSTRUCTION MACHINE WITH A TWO-PIECE BOOM

Info

Publication number
EP0919670A4
EP0919670A4 EP97930798A EP97930798A EP0919670A4 EP 0919670 A4 EP0919670 A4 EP 0919670A4 EP 97930798 A EP97930798 A EP 97930798A EP 97930798 A EP97930798 A EP 97930798A EP 0919670 A4 EP0919670 A4 EP 0919670A4
Authority
EP
European Patent Office
Prior art keywords
shock
reducing
construction machine
stroke end
type construction
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.)
Withdrawn
Application number
EP97930798A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0919670A1 (en
Inventor
Noritaka Nagata
Takeshi Nakamori
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Publication of EP0919670A1 publication Critical patent/EP0919670A1/en
Publication of EP0919670A4 publication Critical patent/EP0919670A4/en
Withdrawn legal-status Critical Current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
    • E02F9/2203—Arrangements for controlling the attitude of actuators, e.g. speed, floating function
    • E02F9/2214—Arrangements for controlling the attitude of actuators, e.g. speed, floating function for reducing the shock generated at the stroke end
    • 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
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/30—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom
    • E02F3/301—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets with a dipper-arm pivoted on a cantilever beam, i.e. boom with more than two arms (boom included), e.g. two-part boom with additional dipper-arm
    • 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
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • 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
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Operation Control Of Excavators (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP97930798A 1996-07-19 1997-07-15 DEVICE FOR REDUCING THE JUMP AT THE END OF THE MOVEMENT OF A CONSTRUCTION MACHINE WITH A TWO-PIECE BOOM Withdrawn EP0919670A4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP190901/96 1996-07-19
JP19090196A JP3734189B2 (ja) 1996-07-19 1996-07-19 ２ピースブーム型建設機械のストロークエンドショック低減装置
PCT/JP1997/002450 WO1998003739A1 (fr) 1996-07-19 1997-07-15 Dispositif de reduction des chocs au point extreme de la course d'un engin de construction du type a fleche articulee

Publications (2)

Publication Number Publication Date
EP0919670A1 EP0919670A1 (en) 1999-06-02
EP0919670A4 true EP0919670A4 (en) 2000-04-05

Family

ID=16265610

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930798A Withdrawn EP0919670A4 (en) 1996-07-19 1997-07-15 DEVICE FOR REDUCING THE JUMP AT THE END OF THE MOVEMENT OF A CONSTRUCTION MACHINE WITH A TWO-PIECE BOOM

Country Status (4)

Country Link
EP (1) EP0919670A4 (ja)
JP (1) JP3734189B2 (ja)
KR (1) KR980009676A (ja)
WO (1) WO1998003739A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100598111B1 (ko) 2004-12-20 2006-07-07 삼성전자주식회사 레귤레이터 및 이를 사용하여 가스를 공급하는 방법
KR100974275B1 (ko) * 2007-12-17 2010-08-06 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 소 선회식 굴삭기의 붐 충격 완화장치 및 그 제어방법
KR101911090B1 (ko) * 2011-12-27 2018-10-25 두산인프라코어 주식회사 인양력 증대 자세교정 장치
CN102591221B (zh) * 2012-02-07 2014-07-09 三一汽车制造有限公司 控制器、多节臂架设备的控制系统和方法、工程机械设备
KR200475536Y1 (ko) * 2013-12-30 2014-12-09 두산인프라코어 주식회사 관절식 붐 장착 굴삭기의 오토 아이들 해제장치
SG11201608725YA (en) 2014-04-25 2016-11-29 Shire Human Genetic Therapies Methods for purification of messenger rna
KR102054666B1 (ko) * 2017-04-06 2020-01-22 두산인프라코어 주식회사 건설 기계의 유량 제어 방법 및 이를 수행하기 위한 시스템

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910673A (en) * 1987-05-29 1990-03-20 Hitachi Construction Machinery Co., Ltd. Apparatus for controlling arm movement of industrial vehicle
WO1995018272A1 (fr) * 1993-12-28 1995-07-06 Komatsu Ltd. Dispositif de commande d'un engin de travaux publics
EP0671511A2 (en) * 1994-03-07 1995-09-13 Hitachi Construction Machinery Co., Ltd. Swing type excavator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257703A (ja) * 1988-08-18 1990-02-27 Kobe Steel Ltd 油圧シリンダの制御方法
JPH02253002A (ja) * 1989-03-27 1990-10-11 Hitachi Constr Mach Co Ltd 作業機械の油圧回路
JPH02135779U (ja) * 1989-04-15 1990-11-13
JPH02279841A (ja) * 1989-04-19 1990-11-15 Yutani Heavy Ind Ltd 建設機械の油圧緩衝制御装置
JPH02279838A (ja) * 1989-04-19 1990-11-15 Yutani Heavy Ind Ltd 建設機械の油圧緩衝制御装置
JPH02292420A (ja) * 1989-05-08 1990-12-03 Hitachi Constr Mach Co Ltd 建設機械の故障診断装置
JPH03257229A (ja) * 1990-03-07 1991-11-15 Kubota Corp バックホウの制御装置
JP3012461B2 (ja) * 1994-09-09 2000-02-21 株式会社クボタ バックホウ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4910673A (en) * 1987-05-29 1990-03-20 Hitachi Construction Machinery Co., Ltd. Apparatus for controlling arm movement of industrial vehicle
WO1995018272A1 (fr) * 1993-12-28 1995-07-06 Komatsu Ltd. Dispositif de commande d'un engin de travaux publics
EP0671511A2 (en) * 1994-03-07 1995-09-13 Hitachi Construction Machinery Co., Ltd. Swing type excavator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9803739A1 *

Also Published As

Publication number Publication date
WO1998003739A1 (fr) 1998-01-29
KR980009676A (ko) 1998-04-30
EP0919670A1 (en) 1999-06-02
JPH1037246A (ja) 1998-02-10
JP3734189B2 (ja) 2006-01-11

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