EP0650558B1 - Steueranordnung für mindestens einen hydraulischen verbraucher - Google Patents

Steueranordnung für mindestens einen hydraulischen verbraucher Download PDF

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Publication number
EP0650558B1
EP0650558B1 EP93915747A EP93915747A EP0650558B1 EP 0650558 B1 EP0650558 B1 EP 0650558B1 EP 93915747 A EP93915747 A EP 93915747A EP 93915747 A EP93915747 A EP 93915747A EP 0650558 B1 EP0650558 B1 EP 0650558B1
Authority
EP
European Patent Office
Prior art keywords
control
valve
pressure
consumer
piston
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
EP93915747A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0650558A1 (de
Inventor
Armin Stellwagen
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.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth AG
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 Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Publication of EP0650558A1 publication Critical patent/EP0650558A1/de
Application granted granted Critical
Publication of EP0650558B1 publication Critical patent/EP0650558B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F15B11/168—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors with sensing of servomotor demand or load with an isolator valve (duplicating valve), i.e. at least one load sense [LS] pressure is derived from a work port load sense pressure but is not a work port pressure itself
    • 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
    • F15B2211/20553—Type of pump variable capacity with pilot circuit, e.g. for controlling a swash plate
    • 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
    • F15B2211/30515—Load holding 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
    • F15B2211/30535—In combination with a pressure compensating valve the pressure compensating valve is arranged between pressure source and 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
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/3057—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve having two valves, one for each port of a double-acting 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/329—Directional control characterised by the type of actuation actuated by fluid 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
    • F15B2211/30—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
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50518—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using pressure relief 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5159—Pressure control characterised by the connections of the pressure control means in the circuit being connected to an output member and a 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
    • F15B2211/50—Pressure control
    • F15B2211/55—Pressure control for limiting a pressure up to a maximum pressure, e.g. by using a pressure relief 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
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/65—Methods of control of the load sensing 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
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders

Definitions

  • the control piston of the throttle valve has a second pressure surface which, in the sense of closing the throttle valve, can be acted upon by a control pressure generated solely by the load when the directional control valve piston is in the rest position.
  • the control piston of the throttle valve has a third pressure surface at the front, ie on the side facing the valve seat, which can be acted upon by the load pressure prevailing in the respective consumer line between the throttle valve and the consumer in the sense of opening the throttle valve. The force generated by the loading pressure on this third pressure surface is intended to open the throttle valve when the consumer line to the tank is relieved.
  • control pressure that is to say the pressure acting on the rear second pressure surface of the control piston of the throttle valve, corresponding to the sizes of the first, second and third pressure surfaces in such a way from the load pressure of the respective Consumer and the highest load pressure of several consumers is generated that a balance of forces between the forces exerted on the first and third pressure surface on the one hand and the forces exerted on the second pressure surface on the other hand is adjustable on the control piston.
  • a combined pressure limiting and suction valve is connected to the section 33 between the throttle valve 23 and the consumer of each consumer line 21 or 22 and is also connected to the tank line 13.
  • the annular surface 40 created by the step in the control piston 34 and always at a distance from the conical surface 35 can therefore be acted upon by the pressure prevailing in section 33 of a consumer line and is referred to as the third pressure surface.
  • the first pressure surface and the third pressure surface of the control piston 34 are the same size.
  • the control piston 34 has a second pressure surface 41 which faces a control chamber 42 which can be acted upon by a control pressure and which is exactly the same size as the first pressure surface 36 and the third pressure surface 40 taken together.
  • FIG. 7 shows a modified throttle valve 23, the control piston 130 of which is stepped both at the front and at the rear. Like the control piston 34, it faces the valve seat and has a first pressure surface 36 and a third pressure surface 40.
  • the second pressure surface 41 now corresponds in size to the pressure surface 36 and can be acted upon by the highest load pressure.
  • the control chamber behind the pressure surface 41 is connected to the consumer line 21 or 22 via a nozzle 133.
  • a nozzle 79 as in the embodiments according to FIGS. 1 to 6 is not present.
  • a fourth pressure area 131 corresponds in size to the pressure area 40 and is connected via a nozzle 132 to a consumer line 21 or 22.
  • the surface 40 and 131 generated forces are equal to each other, so that a balance can be established between the highest load pressure and the pressure prevailing on the first pressure surface 36.
  • FIGS. 2 and 3 are considered in particular.
  • the directional valve pistons 15 of the two directional valves 16 and 17 are in their rest position, so the consumer is not actuated.
  • the section 28 of the consumer lines 21 and 22 and the two lines 52 are relieved towards the tank.
  • the load pressure of the consumer even if it should be higher than that of all other consumers, cannot be applied to the load signal line 57. If the load pressure of the consumer is higher than the load pressure prevailing in the load signal line, the slide piston 71 is pushed into the edge of the bore 95 as far as the stop on one side of the stop head 96.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Servomotors (AREA)
EP93915747A 1992-07-16 1993-06-30 Steueranordnung für mindestens einen hydraulischen verbraucher Expired - Lifetime EP0650558B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4223389 1992-07-16
DE4223389A DE4223389C2 (de) 1992-07-16 1992-07-16 Steueranordnung für mindestens einen hydraulischen Verbraucher
PCT/EP1993/001680 WO1994002743A1 (de) 1992-07-16 1993-06-30 Steueranordnung für mindestens einen hydraulischen verbraucher

Publications (2)

Publication Number Publication Date
EP0650558A1 EP0650558A1 (de) 1995-05-03
EP0650558B1 true EP0650558B1 (de) 1997-01-29

Family

ID=6463338

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93915747A Expired - Lifetime EP0650558B1 (de) 1992-07-16 1993-06-30 Steueranordnung für mindestens einen hydraulischen verbraucher

Country Status (5)

Country Link
US (1) US5558004A (ja)
EP (1) EP0650558B1 (ja)
JP (1) JPH07509046A (ja)
DE (1) DE4223389C2 (ja)
WO (1) WO1994002743A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056288B4 (de) * 2000-11-14 2009-10-08 Linde Material Handling Gmbh Steuerventileinrichtung

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19608758A1 (de) * 1996-03-07 1997-09-11 Rexroth Mannesmann Gmbh Hydraulische Ventilanordnung
US5890362A (en) * 1997-10-23 1999-04-06 Husco International, Inc. Hydraulic control valve system with non-shuttle pressure compensator
US6557822B1 (en) 2000-11-21 2003-05-06 Caterpillar Inc. Dynamically stable flow amplifying poppet valve
DE10220376B4 (de) * 2002-05-07 2004-07-15 Brueninghaus Hydromatik Gmbh Hydraulische Steuerung mit aktiver Rückstellung
EP1895168B1 (en) * 2006-09-01 2009-05-06 Parker Hannifin Aktiebolag Valve arrangement
DE112007003562T5 (de) * 2007-07-02 2010-05-12 Parker Hannifin Ab Fluidventilanordnung
DE102008009722B4 (de) * 2008-02-19 2012-08-23 Marco Systemanalyse Und Entwicklung Gmbh Ventilanordnung
DE202008008045U1 (de) * 2008-06-16 2009-11-05 Liebherr-Hydraulikbagger Gmbh Hydraulischer Antrieb
US8863509B2 (en) * 2011-08-31 2014-10-21 Caterpillar Inc. Meterless hydraulic system having load-holding bypass
DE102013215750A1 (de) * 2013-08-09 2015-02-12 Robert Bosch Gmbh Ventilblock zur Bewegung eines Kran-Auslegers
DE102014202784A1 (de) * 2014-02-17 2015-08-20 Robert Bosch Gmbh Ventilblock zur Bewegung eines Kran-Auslegers
CN104632746B (zh) * 2015-03-04 2017-11-24 徐州重型机械有限公司 切换阀、切换液压系统以及起重机
CN113323070B (zh) * 2021-06-28 2022-03-25 雷沃工程机械集团有限公司 一种挖掘机动臂液压系统及其控制方法

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US4145958A (en) * 1977-12-02 1979-03-27 Borg-Warner Corporation Fluid control system with automatically actuated motor port lock-out valves
DE3128044A1 (de) * 1981-07-16 1983-02-03 Mannesmann Rexroth GmbH, 8770 Lohr "vorrichtung zum betaetigen eines doppeltwirkenden arbeitszylinders"
DE3221160C2 (de) * 1982-06-04 1986-05-07 Mannesmann Rexroth GmbH, 8770 Lohr Aus zwei Steuerblöcken bestehende Steuerventileinrichtung für mehrere hydraulische Antriebe, insbesondere von Mobilgeräten
US4617798A (en) * 1983-04-13 1986-10-21 Linde Aktiengesellschaft Hydrostatic drive systems
DE3334094A1 (de) * 1983-09-21 1985-04-18 Robert Bosch Gmbh, 7000 Stuttgart Hydraulische steuereinrichtung
DE3434014A1 (de) * 1984-09-15 1986-03-20 Beringer-Hydraulik GmbH, Neuheim, Zug Hydraulische steuerung
DE3505623A1 (de) * 1985-02-19 1986-08-21 Robert Bosch Gmbh, 7000 Stuttgart Hydraulisches wegeventil fuer eine lastdruckkompensierte steuerung
DE3602362A1 (de) * 1986-01-27 1987-07-30 Man Nutzfahrzeuge Gmbh Ventilanordnung fuer einen hydraulischen druckspeicher
DE3634728A1 (de) * 1986-10-11 1988-04-21 Rexroth Mannesmann Gmbh Ventilanordnung zum lastunabhaengigen steuern mehrerer gleichzeitig betaetigter hydraulischer verbraucher
US4716933A (en) * 1986-10-16 1988-01-05 J. I. Case Company Valve unit
DE3640640C2 (de) * 1986-11-28 1999-07-22 Linde Ag Hydrostatisches Antriebssystem mit einem Verbraucher mit zwei Anschlüssen
IN170798B (ja) * 1988-05-12 1992-05-23 Hitachi Construction Machinery
JP3061858B2 (ja) * 1990-07-05 2000-07-10 日立建機株式会社 油圧駆動装置及び弁装置
US5207059A (en) * 1992-01-15 1993-05-04 Caterpillar Inc. Hydraulic control system having poppet and spool type valves
US5220862A (en) * 1992-05-15 1993-06-22 Caterpillar Inc. Fluid regeneration circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10056288B4 (de) * 2000-11-14 2009-10-08 Linde Material Handling Gmbh Steuerventileinrichtung

Also Published As

Publication number Publication date
EP0650558A1 (de) 1995-05-03
DE4223389A1 (de) 1994-01-20
DE4223389C2 (de) 2001-01-04
WO1994002743A1 (de) 1994-02-03
JPH07509046A (ja) 1995-10-05
US5558004A (en) 1996-09-24

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