DE69030507T2 - HYDRAULIC DRIVE DEVICE FOR CONSTRUCTION MACHINERY - Google Patents

HYDRAULIC DRIVE DEVICE FOR CONSTRUCTION MACHINERY

Info

Publication number
DE69030507T2
DE69030507T2 DE69030507T DE69030507T DE69030507T2 DE 69030507 T2 DE69030507 T2 DE 69030507T2 DE 69030507 T DE69030507 T DE 69030507T DE 69030507 T DE69030507 T DE 69030507T DE 69030507 T2 DE69030507 T2 DE 69030507T2
Authority
DE
Germany
Prior art keywords
drive device
hydraulic drive
construction machinery
machinery
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.)
Expired - Fee Related
Application number
DE69030507T
Other languages
German (de)
Other versions
DE69030507D1 (en
Inventor
Yukio Moriya
Takeshi Kobayashi
Takumi Onoda
Fujitoshi Takamura
Toshio Yokoyama
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 DE69030507D1 publication Critical patent/DE69030507D1/en
Publication of DE69030507T2 publication Critical patent/DE69030507T2/en
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
    • 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
    • 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
    • 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

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)
  • Operation Control Of Excavators (AREA)
DE69030507T 1990-02-20 1990-02-20 HYDRAULIC DRIVE DEVICE FOR CONSTRUCTION MACHINERY Expired - Fee Related DE69030507T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1990/000195 WO1991013218A1 (en) 1990-02-20 1990-02-20 Hydraulic driving device of construction machinery

Publications (2)

Publication Number Publication Date
DE69030507D1 DE69030507D1 (en) 1997-05-22
DE69030507T2 true DE69030507T2 (en) 1997-09-25

Family

ID=13986369

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69030507T Expired - Fee Related DE69030507T2 (en) 1990-02-20 1990-02-20 HYDRAULIC DRIVE DEVICE FOR CONSTRUCTION MACHINERY

Country Status (3)

Country Link
EP (1) EP0553347B1 (en)
DE (1) DE69030507T2 (en)
WO (1) WO1991013218A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5578805A (en) * 1978-12-11 1980-06-13 Japan Steel Works Ltd:The Turning device by utilizing variable pump
JPS58213927A (en) * 1982-06-07 1983-12-13 Daikin Ind Ltd Construction machine such as power shovel
JPS62160331A (en) * 1986-01-08 1987-07-16 Hitachi Constr Mach Co Ltd Controller for engine and oil-pressure pump
JPH0686905B2 (en) * 1987-07-08 1994-11-02 株式会社神戸製鋼所 Turning control method for hydraulic work machine
JP2509311B2 (en) * 1988-10-25 1996-06-19 株式会社小松製作所 Work machine control method for construction machinery

Also Published As

Publication number Publication date
EP0553347B1 (en) 1997-04-16
EP0553347A4 (en) 1993-03-02
EP0553347A1 (en) 1993-08-04
DE69030507D1 (en) 1997-05-22
WO1991013218A1 (en) 1991-09-05

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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