DE69216055D1 - Hydraulischer kreislauf für schwenkbare arbeitsvorrichtung - Google Patents

Hydraulischer kreislauf für schwenkbare arbeitsvorrichtung

Info

Publication number
DE69216055D1
DE69216055D1 DE69216055T DE69216055T DE69216055D1 DE 69216055 D1 DE69216055 D1 DE 69216055D1 DE 69216055 T DE69216055 T DE 69216055T DE 69216055 T DE69216055 T DE 69216055T DE 69216055 D1 DE69216055 D1 DE 69216055D1
Authority
DE
Germany
Prior art keywords
hydraulic circuit
working device
swiveling
swiveling working
hydraulic
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 - Fee Related
Application number
DE69216055T
Other languages
English (en)
Other versions
DE69216055T2 (de
Inventor
Kohji Komatsu Kawasa Yamashita
Teruo Akiyama
Tadao Komatsu Kawasak Karakama
Naoki - - Isizaki
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
Application granted granted Critical
Publication of DE69216055D1 publication Critical patent/DE69216055D1/de
Publication of DE69216055T2 publication Critical patent/DE69216055T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • 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
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted 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
    • E02F9/2232—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
    • E02F9/2278—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
    • E02F9/2292—Systems with two or more 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
    • E02F9/2278—Hydraulic circuits
    • E02F9/2296—Systems with a variable displacement pump

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
  • Lifting Devices For Agricultural Implements (AREA)
DE69216055T 1991-06-12 1992-06-10 Hydraulischer kreislauf für schwenkbare arbeitsvorrichtung Expired - Fee Related DE69216055T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP03166230A JP3101830B2 (ja) 1991-06-12 1991-06-12 旋回式作業装置の油圧回路
PCT/JP1992/000742 WO1992022712A1 (en) 1991-06-12 1992-06-10 Hydraulic circuit in swingable working apparatus

Publications (2)

Publication Number Publication Date
DE69216055D1 true DE69216055D1 (de) 1997-01-30
DE69216055T2 DE69216055T2 (de) 1997-05-15

Family

ID=15827527

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69216055T Expired - Fee Related DE69216055T2 (de) 1991-06-12 1992-06-10 Hydraulischer kreislauf für schwenkbare arbeitsvorrichtung

Country Status (6)

Country Link
US (1) US5291821A (de)
EP (1) EP0543025B1 (de)
JP (1) JP3101830B2 (de)
KR (1) KR0166100B1 (de)
DE (1) DE69216055T2 (de)
WO (1) WO1992022712A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4341244C2 (de) * 1993-12-03 1997-08-14 Orenstein & Koppel Ag Steuerung zur Aufteilung des durch mindestens eine Pumpe zur Verfügung gestellten Förderstromes bei Hydrauliksystemen auf mehrere Verbraucher
CN1044634C (zh) * 1996-11-13 1999-08-11 中国人民解放军第二炮兵工程学院 大型起竖设备液压系统
US6782697B2 (en) * 2001-12-28 2004-08-31 Caterpillar Inc. Pressure-compensating valve with load check
ITPR20020032A1 (it) * 2002-06-13 2003-12-15 Renzo Bompieri Impianto oleodinamico per ruotare gru di autocarri e/o bracci meccanici di escavatori e relativo procedimento.
US6761027B2 (en) * 2002-06-27 2004-07-13 Caterpillar Inc Pressure-compensated hydraulic circuit with regeneration
KR101742322B1 (ko) * 2010-12-24 2017-06-01 두산인프라코어 주식회사 전자유압펌프용 비상 제어부를 포함하는 건설기계의 유압 시스템
JP6850707B2 (ja) * 2017-09-29 2021-03-31 日立建機株式会社 作業機械

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906670A1 (de) * 1979-02-21 1980-09-04 Bosch Gmbh Robert Ventileinrichtung zur lastkompensierten steuerung eines hydraulischen verbrauchers
JPS5934336A (ja) * 1982-08-19 1984-02-24 Kayaba Ind Co Ltd ２ポンプシステムの同時操作回路
JPS59161524A (ja) * 1983-03-07 1984-09-12 Hitachi Constr Mach Co Ltd 土木，建設機械の油圧回路
JPS61173561A (ja) * 1985-01-28 1986-08-05 Fujitsu Ltd 低速デ−タチヤネル試験方式
JPS61173561U (de) * 1985-04-18 1986-10-28
JPS62288702A (ja) * 1986-06-05 1987-12-15 Sumitomo Heavy Ind Ltd 負荷保持油圧回路
JP2582266B2 (ja) * 1987-09-29 1997-02-19 新キヤタピラー三菱株式会社 流体圧制御システム
JPH0249405A (ja) * 1988-08-11 1990-02-19 Chichibu Cement Co Ltd 可変抵抗装置
JPH02286902A (ja) * 1989-04-28 1990-11-27 Komatsu Ltd 油圧回路
US5209063A (en) * 1989-05-24 1993-05-11 Kabushiki Kaisha Komatsu Seisakusho Hydraulic circuit utilizing a compensator pressure selecting value
JP2721404B2 (ja) * 1989-09-27 1998-03-04 日立建機株式会社 油圧シヨベルの油圧回路

Also Published As

Publication number Publication date
JP3101830B2 (ja) 2000-10-23
DE69216055T2 (de) 1997-05-15
EP0543025A4 (en) 1994-06-29
KR930701668A (ko) 1993-06-12
EP0543025A1 (de) 1993-05-26
US5291821A (en) 1994-03-08
WO1992022712A1 (en) 1992-12-23
EP0543025B1 (de) 1996-12-18
KR0166100B1 (ko) 1999-02-18
JPH04366238A (ja) 1992-12-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee