EP0587043A3 - Method and arrangement for control and regulation of a pressure generator for several different hydraulic consumers connected in parallel. - Google Patents

Method and arrangement for control and regulation of a pressure generator for several different hydraulic consumers connected in parallel. Download PDF

Info

Publication number
EP0587043A3
EP0587043A3 EP93114029A EP93114029A EP0587043A3 EP 0587043 A3 EP0587043 A3 EP 0587043A3 EP 93114029 A EP93114029 A EP 93114029A EP 93114029 A EP93114029 A EP 93114029A EP 0587043 A3 EP0587043 A3 EP 0587043A3
Authority
EP
European Patent Office
Prior art keywords
pressure
variable displacement
displacement pump
parallel
hydraulic consumers
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
EP93114029A
Other languages
German (de)
French (fr)
Other versions
EP0587043A2 (en
EP0587043B1 (en
Inventor
Matthias Brandt
Roland Dr-Ing Wegmann
Oliver Grimm
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.)
HPM HEMSCHEIDT GMBH
Original Assignee
Hemscheidt Maschinentechnik Schwerin GmbH and Co
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 Hemscheidt Maschinentechnik Schwerin GmbH and Co filed Critical Hemscheidt Maschinentechnik Schwerin GmbH and Co
Publication of EP0587043A2 publication Critical patent/EP0587043A2/en
Publication of EP0587043A3 publication Critical patent/EP0587043A3/en
Application granted granted Critical
Publication of EP0587043B1 publication Critical patent/EP0587043B1/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/161—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load
    • F15B11/165—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for adjusting the pump output or bypass in response to demand
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/08—Regulating by delivery pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/05—Pressure after the pump outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/2053—Type of pump
    • F15B2211/20546—Type of pump variable capacity
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/251—High pressure control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/25—Pressure control functions
    • F15B2211/253—Pressure margin control, e.g. pump pressure in relation to load pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6306—Electronic controllers using input signals representing a pressure
    • F15B2211/6313—Electronic controllers using input signals representing a pressure the pressure being a load pressure
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/63—Electronic controllers
    • F15B2211/6303—Electronic controllers using input signals
    • F15B2211/6336—Electronic controllers using input signals representing a state of the output member, e.g. position, speed or acceleration
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6652—Control of the pressure source, e.g. control of the swash plate angle
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/665—Methods of control using electronic components
    • F15B2211/6653—Pressure control
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7135—Combinations of output members of different types, e.g. single-acting cylinders with rotary motors
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/75—Control of speed of the output member
    • 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
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78—Control of multiple output members
    • F15B2211/781—Control of multiple output members one or more output members having priority

Abstract

The object of the invention, by means of an activating electronic unit for the variable displacement pump, is to effect automatically hydraulically regulated adaptation of the delivery flow of the variable displacement pump as a function of the volumetric flow of the different hydraulic consumers at constantly controlled pump pressure. The method according to the invention, after input of the various pressure values into the input unit (16) for the individual hydraulic consumers (12, 13, 15) connected in parallel, provides for the activating electronic unit (4.1) for the variable displacement pump (1) to determine the maximum operating pressure from the pressure values. The pressure level thus predetermined is signalled to the proportional pressure-relief valve (3) with a larger value predetermined in a defined manner. The hydraulic pressure requirement is then secured by the hydraulic pressure-regulating unit (2) via the variable displacement pump (1). <IMAGE>
EP93114029A 1992-09-08 1993-09-02 Method and arrangement for control and regulation of a pressure generator for several different hydraulic consumers connected in parallel Expired - Lifetime EP0587043B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4229950 1992-09-08
DE4229950A DE4229950C2 (en) 1992-09-08 1992-09-08 Method and device for controlling and regulating a pressure generator for several different hydraulic consumers connected in parallel

Publications (3)

Publication Number Publication Date
EP0587043A2 EP0587043A2 (en) 1994-03-16
EP0587043A3 true EP0587043A3 (en) 1995-04-26
EP0587043B1 EP0587043B1 (en) 1999-12-01

Family

ID=6467464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93114029A Expired - Lifetime EP0587043B1 (en) 1992-09-08 1993-09-02 Method and arrangement for control and regulation of a pressure generator for several different hydraulic consumers connected in parallel

Country Status (3)

Country Link
EP (1) EP0587043B1 (en)
AT (1) ATE187267T1 (en)
DE (2) DE4229950C2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19538649C2 (en) * 1995-10-17 2000-05-25 Brueninghaus Hydromatik Gmbh Power control with load sensing
DE10110398A1 (en) * 2001-03-03 2002-09-26 Mannesmann Rexroth Ag Method for regulating the pressure medium supply to a hydraulically operated actuator
JP4128482B2 (en) * 2002-04-30 2008-07-30 東芝機械株式会社 Hydraulic control system
JP4223893B2 (en) * 2002-10-23 2009-02-12 株式会社小松製作所 Control method and control device for hydraulic pump for work machine of work vehicle
DE102006009063A1 (en) 2006-02-27 2007-08-30 Liebherr-Werk Nenzing Gmbh, Nenzing Method and device for controlling a hydraulic drive system
DE102007053036A1 (en) * 2007-11-07 2009-05-14 Robert Bosch Gmbh Controlling and/or regulating device for hydrostatic drive unit i.e. excavator, has controller subjecting individual and/or group of consumers with hydrostatic energy exclusively and successively during required movement of consumers
DE102012011062A1 (en) * 2012-06-04 2013-12-05 Liebherr-France Sas Hydraulic system and pressure relief valve

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1205056A (en) * 1967-09-29 1970-09-16 Aida Iron Works & Co Ltd Improvements in or relating to presses
JPS5874902A (en) * 1981-10-30 1983-05-06 Hitachi Constr Mach Co Ltd Hydraulic circuit for working machine
DE3709504A1 (en) * 1987-03-23 1988-10-06 Rexroth Mannesmann Gmbh Valve device
US4864671A (en) * 1988-03-28 1989-09-12 Decubitus, Inc. Controllably inflatable cushion
EP0419673A1 (en) * 1989-03-22 1991-04-03 Hitachi Construction Machinery Co., Ltd. Hydraulic drive unit for civil engineering and construction machinery

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3943357A1 (en) * 1989-12-29 1991-07-04 Rexroth Mannesmann Gmbh CIRCUIT ARRANGEMENT WITH A CONTROL ELECTRONICS FOR THE MAGNETIC COILS OF ACTUATORS OF A HYDRAULIC SYSTEM

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1205056A (en) * 1967-09-29 1970-09-16 Aida Iron Works & Co Ltd Improvements in or relating to presses
JPS5874902A (en) * 1981-10-30 1983-05-06 Hitachi Constr Mach Co Ltd Hydraulic circuit for working machine
DE3709504A1 (en) * 1987-03-23 1988-10-06 Rexroth Mannesmann Gmbh Valve device
US4864671A (en) * 1988-03-28 1989-09-12 Decubitus, Inc. Controllably inflatable cushion
EP0419673A1 (en) * 1989-03-22 1991-04-03 Hitachi Construction Machinery Co., Ltd. Hydraulic drive unit for civil engineering and construction machinery

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 169 (M - 231)<1314> 26 July 1983 (1983-07-26) *

Also Published As

Publication number Publication date
EP0587043A2 (en) 1994-03-16
ATE187267T1 (en) 1999-12-15
EP0587043B1 (en) 1999-12-01
DE4229950C2 (en) 1996-02-01
DE59309888D1 (en) 2000-01-05
DE4229950A1 (en) 1994-03-24

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