FR2449751A1 - ACTUATION SYSTEM FOR CONSTRUCTION MACHINES AND METHOD FOR CONTROLLING HYDRAULIC CIRCUITS OF SUCH A SYSTEM - Google Patents

ACTUATION SYSTEM FOR CONSTRUCTION MACHINES AND METHOD FOR CONTROLLING HYDRAULIC CIRCUITS OF SUCH A SYSTEM

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
French (fr)
Other versions
FR2449751B1 (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 FR2449751A1 publication Critical patent/FR2449751A1/en
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

Abstract

DANS LE SYSTEME D'ACTIONNEMENT OU DE COMMANDE DE MACHINE DE CONSTRUCTION SELON LA PRESENTE INVENTION LE CIRCUIT HYDRAULIQUE COMPREND PLUSIEURS POMPES HYDRAULIQUES 1-4 A DEPLACEMENT VARIABLE ET PLUSIEURS ACTIONNEURS HYDRAULIQUES 5, 5, 6, 7, 8, 9 ET 11. CHAQUE POMPE EST RACCORDEE EN CIRCUIT FERME A UN OU PLUSIEURS ACTIONNEURS PAR UNE OU PLUSIEURS VALVES A SOLENOIDE POUR ENTRAINER UN OU PLUSIEURS ORGANES MOBILES RELIES A L'ACTIONNEUR OU AUX ACTIONNEURS RESPECTIFS QUAND DU FLUIDE SOUS PRESSION EST ENVOYE A CET ACTIONNEUR OU A CES ACTIONNEURS PAR LA POMPE, AU MOINS UN DES ACTIONNEURS HYDRAULIQUES CHOISIS ETANT EN OUTRE RACCORDE EN CIRCUIT FERME PAR L'INTERMEDIAIRE D'UNE VALVE A SOLENOIDE A AU MOINS UNE DES POMPES HYDRAULIQUES AUTRE QUE LA POMPE HYDRAULIQUE QUI EST RACCORDEE EN CIRCUIT FERME A L'ACTIONNEUR HYDRAULIQUE CHOISI. APPLICATIONS : ENTRE AUTRES, COMMANDE DE PELLES ET GRUES HYDRAULIQUES.IN THE ACTUATION OR CONTROL SYSTEM OF A CONSTRUCTION MACHINE ACCORDING TO THE PRESENT INVENTION THE HYDRAULIC CIRCUIT INCLUDES SEVERAL HYDRAULIC PUMPS 1-4 WITH VARIABLE DISPLACEMENT AND SEVERAL HYDRAULIC ACTUATORS 5, 5, 6, 7, 8, 9 AND 11. EACH PUMP IS CONNECTED IN A CLOSED CIRCUIT TO ONE OR MORE ACTUATORS BY ONE OR MORE SOLENOID VALVES TO DRIVE ONE OR MORE MOVABLE PARTS CONNECTED TO THE ACTUATOR OR TO THE RESPECTIVE ACTUATORS WHEN PRESSURIZED FLUID IS SENT TO THIS ACTUATOR OR THROUGH THESE ACTUATOR , AT LEAST ONE OF THE SELECTED HYDRAULIC ACTUATORS BEING ALSO CONNECTED IN A CLOSED CIRCUIT THROUGH A SOLENOID VALVE HAS AT LEAST ONE OF THE HYDRAULIC PUMPS OTHER THAN THE HYDRAULIC PUMP WHICH IS CONNECTED IN A CLOSED CIRCUIT TO THE CHOOSE ACTION. APPLICATIONS: AMONG OTHERS, CONTROL OF HYDRAULIC SHOVELS AND CRANES.

FR8004111A 1979-02-26 1980-02-25 ACTUATION SYSTEM FOR CONSTRUCTION MACHINES AND METHOD FOR CONTROLLING HYDRAULIC CIRCUITS OF SUCH A SYSTEM Granted FR2449751A1 (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
FR2449751A1 true FR2449751A1 (en) 1980-09-19
FR2449751B1 FR2449751B1 (en) 1985-04-12

Family

ID=27283160

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8004111A Granted FR2449751A1 (en) 1979-02-26 1980-02-25 ACTUATION SYSTEM FOR CONSTRUCTION MACHINES AND METHOD FOR CONTROLLING HYDRAULIC CIRCUITS OF SUCH A SYSTEM

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2506803A1 (en) * 1981-05-29 1982-12-03 Komatsu Mfg Co Ltd HYDRAULIC CIRCUIT FOR MECHANICAL EXCAVATORS OF THE PIVOTING STRUCTURE TYPE
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 (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
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

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 (en) * 1981-05-29 1982-12-03 Komatsu Mfg Co Ltd HYDRAULIC CIRCUIT FOR MECHANICAL EXCAVATORS OF THE PIVOTING STRUCTURE TYPE
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 Operation controller.

Also Published As

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

Similar Documents

Publication Publication Date Title
EP0381328A3 (en) Oil hydraulic circuit for hydraulic machine such as a shovel
US4476679A (en) Civil engineering and construction machinery with hydraulic drive system
EP0419673A4 (en) Hydraulic drive unit for civil engineering and construction machinery
FR2449751A1 (en) ACTUATION SYSTEM FOR CONSTRUCTION MACHINES AND METHOD FOR CONTROLLING HYDRAULIC CIRCUITS OF SUCH A SYSTEM
DE2112813C3 (en) Electro-hydraulic control device
CA2135574A1 (en) Control Device for Actuator of Construction Equipment
US5375686A (en) Device for controlling hydraulic steering clutch and brake
JPH01165766U (en)
KR900016555A (en) Backhoe Hydraulic Circuit
JPS5614605A (en) Hydraulic driving method and system for actuator
EP0762018A3 (en) Hydraulic control apparatus for continuously variable transmission of vehicle
EP1371853B1 (en) Electrohydraulic clamping device
JPS57174541A (en) Oil-pressure working machine
GB1462806A (en) Remote controllable earth-moving or construction machine
JPS57173601A (en) Hydraulic circuit
JPH0246417Y2 (en)
JPS57143180A (en) Control method of variable displacement oil hydraulic pump
ATE103035T1 (en) ACTUATOR.
DE10140528A1 (en) Device for controlling gas exchange valves
KR940000179Y1 (en) Oil-pressure control devices for out-trigger in wheel type excavator
GB1291311A (en) Machine having a fluid operated boom or other movable member
SU1239235A1 (en) Hydraulic drive of amelioration machine
SU1548370A1 (en) Hydraulic drive of slewing gear of excavating working equipment
SU964271A1 (en) Reversive pneumohydraulic drive
SU1460436A2 (en) Hydraulic position drive

Legal Events

Date Code Title Description
ST Notification of lapse