EP0473030A1 - Distributeur proportionnel à siège à 4 voies - Google Patents

Distributeur proportionnel à siège à 4 voies Download PDF

Info

Publication number
EP0473030A1
EP0473030A1 EP91113761A EP91113761A EP0473030A1 EP 0473030 A1 EP0473030 A1 EP 0473030A1 EP 91113761 A EP91113761 A EP 91113761A EP 91113761 A EP91113761 A EP 91113761A EP 0473030 A1 EP0473030 A1 EP 0473030A1
Authority
EP
European Patent Office
Prior art keywords
valves
valve
proportional
proportional throttle
seat
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.)
Withdrawn
Application number
EP91113761A
Other languages
German (de)
English (en)
Inventor
Hans Schwelm
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.)
Hydrolux SARL
Original Assignee
Hydrolux SARL
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 Hydrolux SARL filed Critical Hydrolux SARL
Publication of EP0473030A1 publication Critical patent/EP0473030A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0402—Valve members; Fluid interconnections therefor for linearly sliding valves, e.g. spool 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
    • F15B11/003—Systems with 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
    • 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
    • F15B13/0401—Valve members; Fluid interconnections therefor
    • F15B13/0405—Valve members; Fluid interconnections therefor for seat valves, i.e. poppet 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
    • F15B2211/20—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
    • 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
    • F15B2211/3051—Cross-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
    • F15B2211/30505—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
    • F15B2211/3056—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
    • F15B2211/305—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
    • F15B2211/30575—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 in a Wheatstone Bridge arrangement (also half bridges)
    • 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
    • F15B2211/315—Directional control characterised by the connections of the valve or valves in the circuit
    • F15B2211/3157—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line
    • F15B2211/31576—Directional control characterised by the connections of the valve or valves in the circuit being connected to a pressure source, an output member and a return line having a single pressure source and a single 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
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • 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
    • F15B2211/40—Flow control
    • F15B2211/405—Flow control characterised by the type of flow control means or valve
    • F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
    • 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
    • F15B2211/40—Flow control
    • F15B2211/41—Flow control characterised by the positions of the valve element
    • F15B2211/413—Flow control characterised by the positions of the valve element the positions being continuously variable, e.g. as realised by proportional 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
    • F15B2211/40—Flow control
    • F15B2211/415—Flow control characterised by the connections of the flow control means in the circuit
    • F15B2211/41581—Flow control characterised by the connections of the flow 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
    • F15B2211/40—Flow control
    • F15B2211/46—Control of flow in the return line, i.e. meter-out 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
    • F15B2211/50563—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure
    • F15B2211/50572—Pressure control characterised by the type of pressure control means the pressure control means controlling a differential pressure using a pressure compensating valve for controlling the pressure difference across a flow 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
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5151—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a 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
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure 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
    • F15B2211/60—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
    • F15B2211/715—Output members, e.g. hydraulic motors or cylinders or control therefor having braking means
    • 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
    • F15B2211/80—Other types of control related to particular problems or conditions
    • F15B2211/86—Control during or prevention of abnormal conditions
    • F15B2211/8609—Control during or prevention of abnormal conditions the abnormal condition being cavitation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87193—Pilot-actuated
    • Y10T137/87209—Electric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/87169—Supply and exhaust
    • Y10T137/87233—Biased exhaust valve
    • Y10T137/87241—Biased closed

Definitions

  • the invention relates to a proportional 4-way valve in seat construction, in particular a proportional directional valve with individually controlled 2-way cartridge valves, which are combined into a compact unit by mounting on a common valve housing.
  • proportional and servo valves in a piston valve design are predominantly used as the link between signal processing electronics and the hydraulic power section.
  • valves with a hermetic sealing function are required to ensure position locking and pressure maintenance functions.
  • the leaks caused by the fitting play require additional downstream seat valves at high cost.
  • the proportional valves in the spool design according to the prior art require complex external position control of the spool.
  • FIG. 1 An electrohydraulic drive is shown in FIG. 1, a hydraulic cylinder 4 being selected as an application example as the hydraulic power unit.
  • a hydraulic cylinder 4 In certain areas of application, e.g. in the aforementioned, such a cylinder must be able to be locked in a given position for safety and functional reasons, which is basically done by providing seat valves which prevent the hydraulic fluid from flowing back out of the cylinder chamber into the supply lines ZA and ZB of the cylinder.
  • a proportional 4-way valve 6 essentially consisting of two proportional throttle valves C1 and C3 with integrated spring return which are manufactured by the applicant under the designation DPCMEE 16S8, and two pilot-controlled lowering brake valves C2 and C4 in the seat version, whereby check valves R1 and R3 are assigned to the outputs of valves C1 and C3.
  • valve C1 is opened according to the desired piston speed of the cylinder 4 by its control magnet a, whereby the supply line ZA is supplied with pressure oil via the check valve R1 and the working line connection A of the valve 6.
  • valve C4 is opened via control line X1 for throttled oil return from cylinder port ZB to tank port T of valve 6.
  • valve C1 For stopping the hydraulic cylinder piston 8 in a locked position, the valve C1 is closed, so that the connection ZA now lies on the check valve R1, and the connection ZB on the seat valve C4; The control line X1 is relieved via the valve C1 and the leakage oil return 10 to the tank connection T.
  • valves C3 and C2 are activated in an analogous manner (this via the control line X2), while the locking takes place in a similar manner to that previously described.
  • the lowering brake valves C2 or C4 are opened as far as the proportional valve C1 or C3 specifies via control line X1 or X2, i.e. Valves C1 and C4, or C3 and C2 interact depending on the load pressure, with negative loads they act as a discharge throttle and prevent the load from advancing and cavitation on the inflow side.
  • Each function of the hydraulic cylinder can be controlled and regulated accordingly.
  • the invention provides an option part O upstream of the proportional directional control valve 6 according to the invention, essentially consisting of a compensator K with a pressure connection P 'with a superimposed proportional pressure setting PA, PB, for load-independent flow control.
  • a load pressure tap L (connection LS) for flow rate adjustment is also possible when using a control pump RP.
  • part O only serves to supply energy to the proportional 4-way valve according to the invention.
  • FIG 2 shows a practical embodiment of the new proportional directional control valve in section (without option O from Figure 1).
  • the individual valves C1, C2, C3, C4 are designed as production-optimized screw-in valves for cost reduction and screwed into a common valve housing 12, resulting in a compact and robust valve unit (cartridge technology).
  • the newly developed proportional throttle valves C1, C3 have high dynamics and positioning accuracy due to the integrated spring return between the active cartridge of the main stage for pilot control without additional electrical feedback. Opening and closing times of 40 ms are achieved with 100% signal control and approx. 2% hysteresis.
  • valve arrangement shown can, however, be switched over in the simplest manner to differential operation of the cylinder 4, in which the valves C1 and C3 are opened simultaneously by their control magnets a and b for simultaneous pressurized oil application to the cylinder sides A and B, with a corresponding circuit (not shown) that the seat valves C2 and C4 remain closed and the check valve R3 is deactivated.
  • valves in the seat design provides hermetic tightness and thus maximum operational safety by blocking the cylinder 4 in the event of a power and / or pressure oil failure.

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)
EP91113761A 1990-08-31 1991-08-16 Distributeur proportionnel à siège à 4 voies Withdrawn EP0473030A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87794 1990-08-31
LU87794A LU87794A1 (fr) 1990-08-31 1990-08-31 Proportional-wegeventil in sitzbauweise

Publications (1)

Publication Number Publication Date
EP0473030A1 true EP0473030A1 (fr) 1992-03-04

Family

ID=19731251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91113761A Withdrawn EP0473030A1 (fr) 1990-08-31 1991-08-16 Distributeur proportionnel à siège à 4 voies

Country Status (6)

Country Link
US (1) US5211196A (fr)
EP (1) EP0473030A1 (fr)
CA (1) CA2049792A1 (fr)
FI (1) FI914098A (fr)
LU (1) LU87794A1 (fr)
NO (1) NO913406L (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19537482A1 (de) * 1995-10-09 1997-04-10 Schwelm Hans Hydraulischer Steuerblock
WO2001083998A1 (fr) * 2000-05-03 2001-11-08 Walter Weber Dispositif de commande pour verins hydrauliques a double effet
WO2008012082A3 (fr) * 2006-07-25 2008-06-05 Aros Hydraulik Système de commande pour un élément hydraulique
EP2320094A2 (fr) 2009-11-06 2011-05-11 CLAAS Industrietechnik GmbH Bloc de soupape
WO2022195006A1 (fr) * 2021-03-18 2022-09-22 Norgren Gmbh Appareil de réglage de pression

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0680064A (ja) * 1992-07-13 1994-03-22 Sumitomo Electric Ind Ltd 液圧制御装置
JP2992434B2 (ja) * 1993-12-02 1999-12-20 日立建機株式会社 建設機械の油圧制御装置
DE4420682A1 (de) * 1994-06-14 1996-01-04 Rexroth Mannesmann Gmbh Hydrauliksteuerung für eine teilende Werkzeugmaschine
US5499503A (en) * 1994-09-22 1996-03-19 Iowa Mold Tooling Company, Inc. Hydraulic swing circuit
US5579642A (en) * 1995-05-26 1996-12-03 Husco International, Inc. Pressure compensating hydraulic control system
DE19522746A1 (de) * 1995-06-22 1997-01-02 Bosch Gmbh Robert Elektrohydraulische Steuereinrichtung für einen doppeltwirkenden Verbraucher
US5799485A (en) * 1995-06-22 1998-09-01 Robert Bosch Gmbh Electrohydraulic control device for double-acting consumer
DE19635368C1 (de) * 1996-08-21 1997-12-04 Siemens Ag Elektro-pneumatischer Stellungsregler
KR100286517B1 (ko) * 1996-12-03 2001-04-16 사쿠마 하지메 건설 기계용 제어 장치
DE19650465B4 (de) * 1996-12-05 2005-12-01 Robert Bosch Gmbh Elektrohydraulische Steuereinrichtung
US5791142A (en) * 1997-03-27 1998-08-11 Husco International, Inc. Hydraulic control valve system with split pressure compensator
US5868059A (en) * 1997-05-28 1999-02-09 Caterpillar Inc. Electrohydraulic valve arrangement
US5813226A (en) * 1997-09-15 1998-09-29 Caterpillar Inc. Control scheme for pressure relief
US6131391A (en) * 1998-12-23 2000-10-17 Caterpillar Inc. Control system for controlling the speed of a hydraulic motor
DE19919015C2 (de) * 1999-04-27 2001-11-15 Sauer Danfoss Nordborg As Nord Hydraulische Ventilanordnung mit Verriegelungs- und Schwimmfunktion
US6691604B1 (en) 1999-09-28 2004-02-17 Caterpillar Inc Hydraulic system with an actuator having independent meter-in meter-out control
US7040349B2 (en) * 2002-03-27 2006-05-09 Viking Technologies, L.C. Piezo-electric actuated multi-valve manifold
DE10253340B4 (de) * 2002-04-26 2007-02-15 Volkmann Gmbh Betätigungsventil für einen zweiseitig wirksamen Pneumatikzylinder sowie Verwendung eines solchen Betätigungsventils für mittels Pneumatikzylindern ansteuerbare Spulengatter
US7021191B2 (en) * 2003-01-24 2006-04-04 Viking Technologies, L.C. Accurate fluid operated cylinder positioning system
DE112004000605T5 (de) * 2003-04-04 2006-03-09 Viking Technologies, L.C., Sarasota Vorrichtung und Verfahren zum Optimieren der Arbeit eines Formveränderungsmaterial-Betätigungsgliedprodukts
DE102004037460A1 (de) * 2004-08-02 2006-02-23 Liebherr-Hydraulikbagger Gmbh Hydrauliksystem
US7121189B2 (en) * 2004-09-29 2006-10-17 Caterpillar Inc. Electronically and hydraulically-actuated drain value
US7204084B2 (en) * 2004-10-29 2007-04-17 Caterpillar Inc Hydraulic system having a pressure compensator
US7146808B2 (en) * 2004-10-29 2006-12-12 Caterpillar Inc Hydraulic system having priority based flow control
US7441404B2 (en) 2004-11-30 2008-10-28 Caterpillar Inc. Configurable hydraulic control system
US7874241B2 (en) * 2005-04-19 2011-01-25 Emerson Process Management Power & Water Solutions, Inc. Electronically controllable and testable turbine trip system
US7243493B2 (en) * 2005-04-29 2007-07-17 Caterpillar Inc Valve gradually communicating a pressure signal
US7204185B2 (en) * 2005-04-29 2007-04-17 Caterpillar Inc Hydraulic system having a pressure compensator
US7194856B2 (en) * 2005-05-31 2007-03-27 Caterpillar Inc Hydraulic system having IMV ride control configuration
US7302797B2 (en) * 2005-05-31 2007-12-04 Caterpillar Inc. Hydraulic system having a post-pressure compensator
US7210396B2 (en) * 2005-08-31 2007-05-01 Caterpillar Inc Valve having a hysteretic filtered actuation command
US7331175B2 (en) * 2005-08-31 2008-02-19 Caterpillar Inc. Hydraulic system having area controlled bypass
US20100043418A1 (en) * 2005-09-30 2010-02-25 Caterpillar Inc. Hydraulic system and method for control
US7614336B2 (en) * 2005-09-30 2009-11-10 Caterpillar Inc. Hydraulic system having augmented pressure compensation
US7320216B2 (en) * 2005-10-31 2008-01-22 Caterpillar Inc. Hydraulic system having pressure compensated bypass
US20080034957A1 (en) * 2006-08-09 2008-02-14 Stephenson Dwight B Hydraulic Actuator Control Circuit With Pressure Operated Counterbalancing Valves
JP5004641B2 (ja) * 2007-04-18 2012-08-22 カヤバ工業株式会社 アクチュエータの制御装置
SE531754C2 (sv) * 2007-05-11 2009-07-28 Nordhydraulic Ab Hydraulisk lastkontrollventilanordning
US20080295681A1 (en) * 2007-05-31 2008-12-04 Caterpillar Inc. Hydraulic system having an external pressure compensator
US7621211B2 (en) * 2007-05-31 2009-11-24 Caterpillar Inc. Force feedback poppet valve having an integrated pressure compensator
US8479504B2 (en) * 2007-05-31 2013-07-09 Caterpillar Inc. Hydraulic system having an external pressure compensator
DE102007029355A1 (de) * 2007-06-26 2009-01-02 Robert Bosch Gmbh Hydraulische Steueranordnung
EP2048261A1 (fr) * 2007-10-12 2009-04-15 ArcelorMittal France Générateur de vapeur industriel pour le dépôt d'un revêtement d'alliage sur une bande métallique
US7854115B2 (en) * 2008-04-25 2010-12-21 Husco International, Inc. Post-pressure compensated hydraulic control valve with load sense pressure limiting
US20100090143A1 (en) * 2008-08-28 2010-04-15 Kot Norbert J Dual locking valve
GB2472005A (en) * 2009-07-20 2011-01-26 Ultronics Ltd Control arrangement for monitoring a hydraulic system and altering opening of spool valve in response to operating parameters
US8631650B2 (en) 2009-09-25 2014-01-21 Caterpillar Inc. Hydraulic system and method for control
US8667886B2 (en) * 2009-12-04 2014-03-11 Deere And Company Variable output hydraulic actuator system
DE102012005593A1 (de) * 2012-03-20 2013-09-26 Robert Bosch Gmbh Hydraulische Pilotventilanordnung und hydraulische Ventilanordnung damit
PH12013000162A1 (en) 2012-06-08 2015-03-16 Emerson process man power and water solutions inc Electronically controllable and testable turbine trip system with redundant bleed manifolds
US9611871B2 (en) 2013-09-13 2017-04-04 Norbert J. Kot Pneumatic valve assembly and method
CN106122141B (zh) * 2016-05-31 2018-04-03 上海人豪液压技术有限公司 采用模块化可配组插装阀rhcv组合的电液控制终端
US10798866B2 (en) 2018-08-10 2020-10-13 Cnh Industrial America Llc Depth control system for raising and lowering a work unit of an implement
IT201900015363A1 (it) * 2019-09-02 2021-03-02 Cnh Ind Italia Spa Valvola direzionale per un veicolo da lavoro e relativa disposizione idraulica

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2654366A1 (de) * 1976-12-01 1978-06-08 Claas Maschf Gmbh Geb Hydroventileinrichtung
LU85774A1 (fr) * 1985-02-13 1985-07-24 Hydrolux Sarl Hydraulischer steuerblock
GB2212220A (en) * 1987-11-12 1989-07-19 Hydrolux Sarl Hydraulic control block

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4201052A (en) * 1979-03-26 1980-05-06 Sperry Rand Corporation Power transmission
US4480527A (en) * 1980-02-04 1984-11-06 Vickers, Incorporated Power transmission
DE3140266A1 (de) * 1981-10-10 1983-04-28 Mannesmann Rexroth GmbH, 8770 Lohr "vorrichtung zum steuern eines hydromotors"
JPS61124702A (ja) * 1984-11-22 1986-06-12 Komatsu Ltd 油圧制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2654366A1 (de) * 1976-12-01 1978-06-08 Claas Maschf Gmbh Geb Hydroventileinrichtung
LU85774A1 (fr) * 1985-02-13 1985-07-24 Hydrolux Sarl Hydraulischer steuerblock
GB2212220A (en) * 1987-11-12 1989-07-19 Hydrolux Sarl Hydraulic control block

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19537482A1 (de) * 1995-10-09 1997-04-10 Schwelm Hans Hydraulischer Steuerblock
WO1997013980A2 (fr) * 1995-10-09 1997-04-17 Hans Schwelm Systeme de soupapes
WO1997013980A3 (fr) * 1995-10-09 1997-07-03 Hans Schwelm Systeme de soupapes
US5975134A (en) * 1995-10-09 1999-11-02 Schwelm; Hans Valve system
CZ297720B6 (cs) * 1995-10-09 2007-03-14 Class Industrietechnik Gmbh Centrální blok ventilového systému a ventilový blok dvou nebo trícestného ventilu a jeho pouzití
WO2001083998A1 (fr) * 2000-05-03 2001-11-08 Walter Weber Dispositif de commande pour verins hydrauliques a double effet
WO2008012082A3 (fr) * 2006-07-25 2008-06-05 Aros Hydraulik Système de commande pour un élément hydraulique
EP2320094A2 (fr) 2009-11-06 2011-05-11 CLAAS Industrietechnik GmbH Bloc de soupape
DE102009052257A1 (de) 2009-11-06 2011-05-12 Claas Industrietechnik Gmbh Ventilbaugruppe
EP2320094A3 (fr) * 2009-11-06 2014-08-06 CLAAS Industrietechnik GmbH Bloc de soupape
RU2529543C2 (ru) * 2009-11-06 2014-09-27 КЛААС ИНДУСТРИТЕХНИК ГмбХ Блок клапанов
WO2022195006A1 (fr) * 2021-03-18 2022-09-22 Norgren Gmbh Appareil de réglage de pression

Also Published As

Publication number Publication date
US5211196A (en) 1993-05-18
CA2049792A1 (fr) 1992-03-01
FI914098A (fi) 1992-03-01
NO913406D0 (no) 1991-08-30
LU87794A1 (fr) 1991-02-18
FI914098A0 (fi) 1991-08-30
NO913406L (no) 1992-03-02

Similar Documents

Publication Publication Date Title
EP0473030A1 (fr) Distributeur proportionnel à siège à 4 voies
EP0628731B1 (fr) Servo-soupape asservie
EP0546300B1 (fr) Dispositif de commande électrohydraulique
DE3347000C2 (fr)
DE4302755A1 (de) Steuereinrichtung zur Regelung einer von zwei zusammenwirkenden Hydraulik-Verbrauchern abhängigen Arbeitskenngröße
EP0650558B1 (fr) Dispositif de commande pour au moins un consommateur hydraulique
DE4108915C2 (de) Hydraulische Einrichtung zur Druckmittelversorgung eines bevorrechtigten Primärlastkreises
EP3058236A1 (fr) Dispositif de commande
CH708877B1 (de) Hydraulikventilanordnung mit Steuerungs-/Regelungsfunktion und zugehöriges Rücklaufventil.
DE10219717B3 (de) Hydraulische Ventilanordnung
DE102009035278B4 (de) Druckverstärker
DE102004025322A1 (de) Hydraulische Ventilanordnung
DE3836453A1 (de) Ventilanordnung zur steuerung und ueberwachung des arbeitsdruckes eines hydraulischen verbrauchers
DE10340505B4 (de) Ventilanordnung zur Steuerung eines Hydraulikantriebs
DE4230183C2 (de) Steuervorrichtung für Hydromotoren
CH708876B1 (de) Hydraulikventilanordnung mit Steuerungs-/Regelungsfunktion und zugehöriges Rücklaufventil.
DE4237901C2 (de) Elektrohydraulische Steuervorrichtung und Druckminderventil
EP0219052B1 (fr) Dispositif de commande hydraulique
EP0884486B1 (fr) Dispositif de serrage électrohydraulique
DE3225132A1 (de) Hydraulisches sicherheitsbremsventil
DE102008008102A1 (de) Verfahren und Vorrichtung zur Druckmittelversorgung von zumindest drei hydraulischen Verbrauchern
DE10340506B4 (de) Ventilanordnung zur Steuerung eines Hydraulikantriebes
EP1574720B1 (fr) Commande électro-hydraulique et méthode de sa déactivation
DE102015209657A1 (de) Hydraulische Ventilanordnung, hydraulischer Ventilblock mit einer derartigen Ventilanordnung, und hydraulischer Antrieb damit
DE4140423A1 (de) Vorrichtung zur einstellung des arbeitsfluessigkeitsdruckes

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19920512

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19940301