FR2449751A1 - Systeme d'actionnement pour des machines de construction et procede pour la commande des circuits hydrauliques d'un tel systeme - Google Patents

Systeme d'actionnement pour des machines de construction et procede pour la commande des circuits hydrauliques d'un tel systeme

Info

Publication number
FR2449751A1
FR2449751A1 FR8004111A FR8004111A FR2449751A1 FR 2449751 A1 FR2449751 A1 FR 2449751A1 FR 8004111 A FR8004111 A FR 8004111A FR 8004111 A FR8004111 A FR 8004111A FR 2449751 A1 FR2449751 A1 FR 2449751A1
Authority
FR
France
Prior art keywords
hydraulic
actuators
actuator
closed circuit
construction machines
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.)
Granted
Application number
FR8004111A
Other languages
English (en)
French (fr)
Other versions
FR2449751B1 (fi
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/ja
Priority claimed from JP8021279A external-priority patent/JPS566901A/ja
Priority claimed from JP54134259A external-priority patent/JPS595166B2/ja
Application filed by Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Publication of FR2449751A1 publication Critical patent/FR2449751A1/fr
Application granted granted Critical
Publication of FR2449751B1 publication Critical patent/FR2449751B1/fr
Granted 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)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
FR8004111A 1979-02-26 1980-02-25 Systeme d'actionnement pour des machines de construction et procede pour la commande des circuits hydrauliques d'un tel systeme Granted FR2449751A1 (fr)

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 (ja) 1979-10-19 1979-10-19 ポンプ制御油圧回路の制御方法

Publications (2)

Publication Number Publication Date
FR2449751A1 true FR2449751A1 (fr) 1980-09-19
FR2449751B1 FR2449751B1 (fi) 1985-04-12

Family

ID=27283160

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8004111A Granted FR2449751A1 (fr) 1979-02-26 1980-02-25 Systeme d'actionnement pour des machines de construction et procede pour la commande des circuits hydrauliques d'un tel systeme

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506803A1 (fr) * 1981-05-29 1982-12-03 Komatsu Mfg Co Ltd Circuit hydraulique pour pelles mecaniques du type a structure pivotante
EP0301096A1 (en) * 1987-01-30 1989-02-01 Kabushiki Kaisha Komatsu Seisakusho Operation controller

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5817202A (ja) * 1981-07-24 1983-02-01 Hitachi Constr Mach Co Ltd 油圧回路の制御方法
JPS5857504A (ja) * 1981-10-02 1983-04-05 Hitachi Constr Mach Co Ltd 油圧回路の制御方法
US4537029A (en) * 1982-09-23 1985-08-27 Vickers, Incorporated Power transmission
DE3704452A1 (de) * 1987-02-10 1988-08-18 Mannesmann Ag Hydraulikanlage fuer einen bagger
GB2250108B (en) * 1990-10-31 1995-02-08 Samsung Heavy Ind Control system for automatically controlling actuators of an excavator
JP5572586B2 (ja) 2011-05-19 2014-08-13 日立建機株式会社 作業機械の油圧駆動装置
JP5973979B2 (ja) 2013-11-21 2016-08-23 日立建機株式会社 作業機械の駆動装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2631530A1 (de) * 1976-07-14 1978-01-19 Weserhuette Ag Eisenwerk Steuerung von hydraulisch angetriebenen bagger- und auslegerkranen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
EXBK/62 *
EXBK/76 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506803A1 (fr) * 1981-05-29 1982-12-03 Komatsu Mfg Co Ltd Circuit hydraulique pour pelles mecaniques du type a structure pivotante
EP0301096A1 (en) * 1987-01-30 1989-02-01 Kabushiki Kaisha Komatsu Seisakusho Operation controller
EP0301096A4 (en) * 1987-01-30 1989-10-12 Komatsu Mfg Co Ltd CONTROL UNIT.

Also Published As

Publication number Publication date
GB2045360B (en) 1982-12-08
SE448762B (sv) 1987-03-16
FR2449751B1 (fi) 1985-04-12
GB2045360A (en) 1980-10-29
SE8001459L (sv) 1980-08-27
DE3007011C2 (fi) 1987-01-02
DE3007011A1 (de) 1981-01-15

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Legal Events

Date Code Title Description
ST Notification of lapse