EP0877169A3 - Hydraulic control device for the load-independent control of a double acting actuator - Google Patents

Hydraulic control device for the load-independent control of a double acting actuator Download PDF

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Publication number
EP0877169A3
EP0877169A3 EP98102270A EP98102270A EP0877169A3 EP 0877169 A3 EP0877169 A3 EP 0877169A3 EP 98102270 A EP98102270 A EP 98102270A EP 98102270 A EP98102270 A EP 98102270A EP 0877169 A3 EP0877169 A3 EP 0877169A3
Authority
EP
European Patent Office
Prior art keywords
slide
load
pressure
control
control device
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
EP98102270A
Other languages
German (de)
French (fr)
Other versions
EP0877169A2 (en
EP0877169B1 (en
Inventor
Wolfgang Koetter
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
Publication of EP0877169A2 publication Critical patent/EP0877169A2/en
Publication of EP0877169A3 publication Critical patent/EP0877169A3/en
Application granted granted Critical
Publication of EP0877169B1 publication Critical patent/EP0877169B1/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
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
    • F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
    • F15B13/0417—Load sensing elements; Internal fluid connections therefor; Anti-saturation or pressure-compensation valves
    • 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
    • F15B11/163—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load for sharing the pump output equally amongst users or groups of users, e.g. using anti-saturation, pressure compensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C3/00—Circuit elements having moving parts
    • F15C3/06—Circuit elements having moving parts using balls or pill-shaped disks
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30505—Non-return valves, i.e. check valves
    • 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • F15B2211/3053—In combination with a pressure compensating valve
    • F15B2211/30555—Inlet and outlet of the pressure compensating valve being connected to the directional control valve
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3105—Neutral or centre positions
    • F15B2211/3111—Neutral or centre positions the pump port being closed in the centre position, e.g. so-called closed centre
    • 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
    • F15B2211/30—Directional control
    • F15B2211/31—Directional control characterised by the positions of the valve element
    • F15B2211/3122—Special positions other than the pump port being connected to working ports or the working ports being connected to the return line
    • F15B2211/3127—Floating position connecting the working ports and the return line
    • 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
    • F15B2211/30—Directional control
    • F15B2211/35—Directional control combined with flow control
    • F15B2211/351—Flow control by regulating means in feed line, i.e. meter-in 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/605—Load sensing circuits
    • F15B2211/6051—Load sensing circuits having valve means between output member and the load sensing circuit
    • F15B2211/6054—Load sensing circuits having valve means between output member and the load sensing circuit using shuttle valves
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Es wird eine hydraulische Steuereinrichtung (10) zur lastdruckunabhängigen Steuerung eines doppeltwirkenden Motors vorgeschlagen, die sich für eine versorgungsabhängige Ölstromaufteilung eignet und bei einfacher Bauweise höhere Sicherheitsanforderungen erfüllt. Eine der Meßblende (22) nachgeschaltete Druckwaage (12) hat einen Drosselschieber (48), der von einem Rückschlagventil (42) getrennt ist. Eine LS-Druckleitung (55) ist über den Drosselschieber (48) und einen Kolbenabschnitt (30) des Steuerschiebers (25) entlastbar, wobei dieser als Vollschieber ohne innere Kanäle ausgeführt ist. Ein Sinken der Last am Motor wird bei Pumpendruckabfall oder Leckage im Steuerkreis unabhängig von den Druckverhältnissen an der Druckwaage (12) durch das Rückschlagventil (42) verhindert. Dabei läßt sich der Steuerschieber (25) mit einer zusätzlichen Freigangstellung (37) ausbilden.

Figure 00000001
A hydraulic control device (10) for load-independent control of a double-acting engine is proposed, which is suitable for a supply-dependent oil flow distribution and, with a simple construction, meets higher safety requirements. A pressure compensator (12) connected downstream of the measuring orifice (22) has a throttle slide (48) which is separated from a check valve (42). An LS pressure line (55) can be relieved via the throttle slide (48) and a piston section (30) of the control slide (25), which is designed as a full slide without internal channels. The check valve (42) prevents the load on the motor from dropping in the event of a drop in pump pressure or leakage in the control circuit, regardless of the pressure conditions on the pressure compensator (12). The control slide (25) can be designed with an additional free position (37).
Figure 00000001
EP98102270A 1997-05-07 1998-02-10 Hydraulic control device for the load-independent control of a double acting actuator Expired - Lifetime EP0877169B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19719228 1997-05-07
DE19719228A DE19719228A1 (en) 1997-05-07 1997-05-07 Hydraulic control device for load-independent control of a double-acting engine

Publications (3)

Publication Number Publication Date
EP0877169A2 EP0877169A2 (en) 1998-11-11
EP0877169A3 true EP0877169A3 (en) 2000-01-19
EP0877169B1 EP0877169B1 (en) 2003-12-03

Family

ID=7828844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98102270A Expired - Lifetime EP0877169B1 (en) 1997-05-07 1998-02-10 Hydraulic control device for the load-independent control of a double acting actuator

Country Status (2)

Country Link
EP (1) EP0877169B1 (en)
DE (2) DE19719228A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109798270A (en) * 2019-02-25 2019-05-24 哈尔滨工业大学 Multi-modal energy-saving servo actuator and the multi-modal energy-efficient method of realization

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10027382A1 (en) 2000-06-02 2001-12-06 Bosch Gmbh Robert Hydraulic control device
US6318079B1 (en) * 2000-08-08 2001-11-20 Husco International, Inc. Hydraulic control valve system with pressure compensated flow control

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629850A1 (en) * 1986-09-02 1988-03-03 Bosch Gmbh Robert Hydraulic directional control valve
DE3634728A1 (en) * 1986-10-11 1988-04-21 Rexroth Mannesmann Gmbh VALVE ARRANGEMENT FOR LOAD-INDEPENDENT CONTROL OF SEVERAL SIMPLY ACTUATED HYDRAULIC CONSUMERS
DE4026720A1 (en) * 1989-12-19 1991-06-20 Bosch Gmbh Robert Hydraulic directional control valve for load sensing - incorporates extra chamber to allow left or right hand installation
DE4136991A1 (en) * 1991-11-11 1993-05-13 Bosch Gmbh Robert Hydraulic path control valve - comprises assembly with integrated flow regulating valve and check valve, flow regulating valve limiting pressure medium flow to hydromotor
EP0550257A1 (en) * 1991-12-25 1993-07-07 Kayaba Industry Co., Ltd. Device for controlling multiple hydraulic actuators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3629850A1 (en) * 1986-09-02 1988-03-03 Bosch Gmbh Robert Hydraulic directional control valve
DE3634728A1 (en) * 1986-10-11 1988-04-21 Rexroth Mannesmann Gmbh VALVE ARRANGEMENT FOR LOAD-INDEPENDENT CONTROL OF SEVERAL SIMPLY ACTUATED HYDRAULIC CONSUMERS
DE4026720A1 (en) * 1989-12-19 1991-06-20 Bosch Gmbh Robert Hydraulic directional control valve for load sensing - incorporates extra chamber to allow left or right hand installation
DE4136991A1 (en) * 1991-11-11 1993-05-13 Bosch Gmbh Robert Hydraulic path control valve - comprises assembly with integrated flow regulating valve and check valve, flow regulating valve limiting pressure medium flow to hydromotor
EP0550257A1 (en) * 1991-12-25 1993-07-07 Kayaba Industry Co., Ltd. Device for controlling multiple hydraulic actuators

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109798270A (en) * 2019-02-25 2019-05-24 哈尔滨工业大学 Multi-modal energy-saving servo actuator and the multi-modal energy-efficient method of realization

Also Published As

Publication number Publication date
EP0877169A2 (en) 1998-11-11
DE19719228A1 (en) 1998-11-12
EP0877169B1 (en) 2003-12-03
DE59810308D1 (en) 2004-01-15

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