GB2045360B - Drive system for construction machinery - Google Patents

Drive system for construction machinery

Info

Publication number
GB2045360B
GB2045360B GB8006247A GB8006247A GB2045360B GB 2045360 B GB2045360 B GB 2045360B GB 8006247 A GB8006247 A GB 8006247A GB 8006247 A GB8006247 A GB 8006247A GB 2045360 B GB2045360 B GB 2045360B
Authority
GB
United Kingdom
Prior art keywords
drive system
construction machinery
machinery
construction
drive
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
Application number
GB8006247A
Other versions
GB2045360A (en
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
Priority claimed from JP2077679A external-priority patent/JPS55115606A/en
Priority claimed from JP8021279A external-priority patent/JPS566901A/en
Priority claimed from JP54134259A external-priority patent/JPS595166B2/en
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of GB2045360A publication Critical patent/GB2045360A/en
Application granted granted Critical
Publication of GB2045360B publication Critical patent/GB2045360B/en
Expired 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
    • E02F9/2217—Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels
    • 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
    • E02F9/2239—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance
    • E02F9/2242—Control of flow rate; Load sensing arrangements using two or more pumps with cross-assistance including an electronic controller
    • 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

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)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)
GB8006247A 1979-02-26 1980-02-25 Drive system for construction machinery Expired GB2045360B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2077679A JPS55115606A (en) 1979-02-26 1979-02-26 Closed hydraulic circuit for controlling operation of pump
JP8021279A JPS566901A (en) 1979-06-27 1979-06-27 Hydraulic circuit for construction equipment
JP54134259A JPS595166B2 (en) 1979-10-19 1979-10-19 Control method of pump control hydraulic circuit

Publications (2)

Publication Number Publication Date
GB2045360A GB2045360A (en) 1980-10-29
GB2045360B true GB2045360B (en) 1982-12-08

Family

ID=27283160

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8006247A Expired GB2045360B (en) 1979-02-26 1980-02-25 Drive system for construction machinery

Country Status (4)

Country Link
DE (1) DE3007011A1 (en)
FR (1) FR2449751A1 (en)
GB (1) GB2045360B (en)
SE (1) SE448762B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57197336A (en) * 1981-05-29 1982-12-03 Komatsu Ltd Oil-pressure circuit for turning excavator
JPS5817202A (en) * 1981-07-24 1983-02-01 Hitachi Constr Mach Co Ltd Control unit for hydraulic circuit
JPS5857504A (en) * 1981-10-02 1983-04-05 Hitachi Constr Mach Co Ltd Controller for hydraulic circuit
US4537029A (en) * 1982-09-23 1985-08-27 Vickers, Incorporated Power transmission
EP0301096B1 (en) * 1987-01-30 1994-03-02 Kabushiki Kaisha Komatsu Seisakusho Operation controller
DE3704452A1 (en) * 1987-02-10 1988-08-18 Mannesmann Ag Hydraulic system for an excavator
GB2250108B (en) * 1990-10-31 1995-02-08 Samsung Heavy Ind Control system for automatically controlling actuators of an excavator
JP5572586B2 (en) * 2011-05-19 2014-08-13 日立建機株式会社 Hydraulic drive device for work machine
JP5973979B2 (en) 2013-11-21 2016-08-23 日立建機株式会社 Drive device for work machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631530A1 (en) * 1976-07-14 1978-01-19 Weserhuette Ag Eisenwerk Control system for hydraulically driven excavator - has minimal number of operating levers for interlocked individual circuits

Also Published As

Publication number Publication date
DE3007011A1 (en) 1981-01-15
SE8001459L (en) 1980-08-27
GB2045360A (en) 1980-10-29
DE3007011C2 (en) 1987-01-02
SE448762B (en) 1987-03-16
FR2449751A1 (en) 1980-09-19
FR2449751B1 (en) 1985-04-12

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950225