DE3683805D1 - CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES. - Google Patents

CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES.

Info

Publication number
DE3683805D1
DE3683805D1 DE8686106864T DE3683805T DE3683805D1 DE 3683805 D1 DE3683805 D1 DE 3683805D1 DE 8686106864 T DE8686106864 T DE 8686106864T DE 3683805 T DE3683805 T DE 3683805T DE 3683805 D1 DE3683805 D1 DE 3683805D1
Authority
DE
Germany
Prior art keywords
pump
valves
control device
controls
working 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.)
Expired - Lifetime
Application number
DE8686106864T
Other languages
German (de)
Inventor
Erich Eckhardt
Gerhard Nonnenmacher
Roman Romes
Franz Schwede
Dieter Weigle
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Priority to DE8686106864T priority Critical patent/DE3683805D1/en
Application granted granted Critical
Publication of DE3683805D1 publication Critical patent/DE3683805D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram

Abstract

A hydraulic device such as a double acting cylinder is driven by a pump in turn driven by an engine. Supply from the pump to opposite sides of the piston is controlled by an electromagnetically operated valve. A second electromagnetic valve controls two pistons combined with the pump to vary its output. The operating handle for the cylinder is connected to a nominal value signal emitter which controls both electromagnetic valves. Both valves act proportionally in one of several alternative control arrangements, an additional signal is injected at a summing point following the signal emitter. This superimposes a minimum flow additional to that supplied by the valves.
DE8686106864T 1985-06-19 1986-05-21 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES. Expired - Lifetime DE3683805D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8686106864T DE3683805D1 (en) 1985-06-19 1986-05-21 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853521815 DE3521815A1 (en) 1985-06-19 1985-06-19 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES
DE8686106864T DE3683805D1 (en) 1985-06-19 1986-05-21 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES.

Publications (1)

Publication Number Publication Date
DE3683805D1 true DE3683805D1 (en) 1992-03-19

Family

ID=6273575

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19853521815 Withdrawn DE3521815A1 (en) 1985-06-19 1985-06-19 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES
DE8686106864T Expired - Lifetime DE3683805D1 (en) 1985-06-19 1986-05-21 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19853521815 Withdrawn DE3521815A1 (en) 1985-06-19 1985-06-19 CONTROL DEVICE FOR HYDRAULIC WORKING MACHINES

Country Status (2)

Country Link
EP (1) EP0205925B1 (en)
DE (2) DE3521815A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2648584B1 (en) * 1989-06-16 1991-10-11 Rexroth Sigma METHOD AND SYSTEM FOR REGULATING THE MIDDLE CURRENT THROUGH A LOAD, AND ELECTRIC REMOTE CONTROL DEVICE OF THE MANIPULATOR TYPE USING THE SAME
FR2650635A1 (en) * 1989-08-07 1991-02-08 Rexroth Sigma Method for operating at least one variable output pump in an electrohydraulic plant, and electrohydraulic plant implementing this method
DE4129858A1 (en) * 1991-09-07 1993-03-11 Kiwa Maschinenfabrik Gmbh METHOD AND CIRCUIT FOR CONTROLLING, IN PARTICULAR A CRANE SYSTEM
DE19545657A1 (en) * 1995-12-07 1997-06-12 Rexroth Mannesmann Gmbh Hydraulic valve arrangement with a pressure-controlled directional valve
CN107917117A (en) * 2016-10-11 2018-04-17 张利 A kind of mechanical hydraulic servo cylinder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1807171A1 (en) * 1968-11-06 1970-06-18 Bosch Gmbh Robert Device for the electro-hydraulic remote control of hydraulic directional control valves
GB1385099A (en) * 1972-08-25 1975-02-26 Coventry Climax Eng Ltd Industrial fork lift truck
SE435750B (en) * 1979-06-15 1984-10-15 Akermans Verkstad Ab DEVICE FOR RESTRICTING FROM A HYDRAULIC DEVICE WITHOUT POWER
JPS5899501A (en) * 1981-12-03 1983-06-13 Ishikawajima Harima Heavy Ind Co Ltd Hydraulic pump control circuit

Also Published As

Publication number Publication date
DE3521815A1 (en) 1987-01-02
EP0205925A3 (en) 1989-03-22
EP0205925A2 (en) 1986-12-30
EP0205925B1 (en) 1992-02-05

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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