EP1371853B1 - Dispositif de serrage électrohydraulique - Google Patents

Dispositif de serrage électrohydraulique Download PDF

Info

Publication number
EP1371853B1
EP1371853B1 EP03006775A EP03006775A EP1371853B1 EP 1371853 B1 EP1371853 B1 EP 1371853B1 EP 03006775 A EP03006775 A EP 03006775A EP 03006775 A EP03006775 A EP 03006775A EP 1371853 B1 EP1371853 B1 EP 1371853B1
Authority
EP
European Patent Office
Prior art keywords
pressure
valve
tensioning
control
actual
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 - Fee Related
Application number
EP03006775A
Other languages
German (de)
English (en)
Other versions
EP1371853A1 (fr
Inventor
Georg Dipl.-Ing. Neumair (Fh)
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.)
Hawe Hydraulik GmbH and Co KG
Original Assignee
Hawe Hydraulik GmbH and Co KG
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 Hawe Hydraulik GmbH and Co KG filed Critical Hawe Hydraulik GmbH and Co KG
Publication of EP1371853A1 publication Critical patent/EP1371853A1/fr
Application granted granted Critical
Publication of EP1371853B1 publication Critical patent/EP1371853B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • 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
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F15B19/005—Fault detection or monitoring
    • 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
    • F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
    • F15B20/002—Electrical failure
    • 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
    • F15B2211/20538—Type of pump constant 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
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
    • 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
    • F15B2211/32—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
    • F15B2211/50—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
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to 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
    • F15B2211/50—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
    • F15B2211/50—Pressure control
    • F15B2211/57—Control of a differential 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
    • 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
    • F15B2211/635—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements
    • F15B2211/6355—Circuits providing pilot pressure to pilot pressure-controlled fluid circuit elements having valve means

Definitions

  • the invention relates to an electro-hydraulic tensioning device according to the preamble of claim 1.
  • the control piston of the clamping pressure valve is an electrical Assigned switch, which transmits a signal to the higher-level control device, as soon as the control piston assumes a position dependent on the pressure, which is the target clamping pressure or should correspond to a pressure near the target clamping pressure.
  • the mode becomes the setting of the target clamping pressure or the failure to reach the target clamping pressure reported to the control device. Be about the control device then the corresponding work processes in the machine tool controlled or at least released or suppressed.
  • the control piston plays in dependence of the pressurization by the tapped at the tap in the Hegeberichtventil actual clamping pressure and the opposite Pressure of the spring, its biasing pressure on the hydraulic pressure in the control chamber is set.
  • Pressure fluctuations in the system for example, caused by leakage in the clamping element, by a memory charging operation, or by other influences, has to balance the control piston, but fitted relatively tight must be and therefore unsatisfactory, especially with low pressure fluctuations gets along.
  • Such game movements of the control piston for balancing of pressure fluctuations can be the meaningfulness of the signals of the electric Affect switch for the control device, so that the control device under unfavorable operating conditions an incorrect or none or none receives usable information.
  • influences in the electrical system can do this cause the proportional pressure control valve to change the pressure when the flow changes in the control chamber unintentionally changed, causing the set clamping pressure deviates from the target clamping pressure without the control device informed is.
  • the proportional pressure control valve increase the signal pressure when changing the current.
  • the directional control valve can influence the clamping pressure. All the above influences can individually or in combination cause the actual clamping pressure for the clamping element unintentionally deviates from the nominal clamping pressure, resulting in damage in the machine tool, the clamping element or on workpieces can result.
  • electro-pneumatic control device in a pneumatically controlled against spring pressure 3/2-way control valve a Pressure sensing device provided for measuring the pressure in a consumer connection, to determine if the valve slide is against the force of a spring a first position has moved properly to the second position.
  • the pressure sensing device can generate a signal that matches the tapped pressure of the Load device is supplied, corresponds.
  • the pressure signal is sent to a control device transmitted as an analog signal or in digital format.
  • EP 1 150 019 A EP 0 884 484 A
  • US Pat. No. 6,199,378 B also of interest are: EP 1 150 019 A, EP 0 884 484 A, US Pat. No. 6,199,378 B.
  • the invention is based on the object, an electro-hydraulic clamping device of the type mentioned structurally simple and yet with high reliability for the clamping element, the workpieces and the machine tool.
  • the electro-hydraulic clamping device is structurally simple and works reliable, because simple and inexpensive valves can be used, where no expensive and complicated monitoring facilities are provided.
  • the operational safety is high because the analog pressure transducer is the actual clamping pressure in the directional control valve taps, i. where he transferred to the clamping element and also for transferring to the control piston is tapped, and so the control device meaningful informs, whether the actual clamping pressure coincides with the nominal clamping pressure or not.
  • the analogue pressure transducer uses the tapping in this way, which in any case is present for the proper functioning of the pressure relief valve. Any influences on the clamping pressure are not at the place of origin or in considered the responsible for the genesis valve, but indirectly over their effect on the actual clamping pressure. This simplifies the monitoring effort considerably.
  • the analog pressure transducer offers the possibility of a Actual value / setpoint adjustment to carry out a permanent or cyclic control, that is to say, if a deviation occurs irrespective of this which point an influence on the clamping pressure has occurred. It becomes the realization takes into account that ultimately it only matters that the actual clamping pressure on the Clamping element coincides with the desired clamping pressure or quickly in accordance to bring is because damage only in the clamping element or over the clamping element regardless of where in the hydraulic control Influence on the clamping pressure adjustment is taken.
  • the safety valve with a shut-off device be formed in the shut-off position of the safety valve in both flow directions leakproof is tight.
  • Current changes by example the proportional pressure control valve could be caused to set the control pressure in the Control chamber inadvertently increase, can in the shut-off position of the safety valve no longer affect the control chamber. It may even have a control routine be used when after correct adjustment of the target clamping pressure or the correct setting pressure in the control chamber, the proportional pressure control valve switched off in befindlichem in the shut-off valve is, and only at a desired change of the signal pressure is actuated.
  • a pressure-sensitive transducer element in the analog pressure transducer generates a for Actual clamping pressure is proportional signal voltage or a signal current, i. a per manente analog information for the control device from which these permanent is informed about the pressure conditions in the clamping element.
  • the signal from the analogue pressure transducer can with a simple electro-hydraulic tensioning device if necessary, be processed only to display a good or error signal.
  • the control device is designed so that they are in a closed Control loop affects the setting of the clamping pressure increases as soon as Deviations between the actual clamping pressure and the desired set clamping pressure be reported.
  • the safety valve and the proportional pressure control valve housed together in a headboard of the control chamber. Also the magnets of the safety valve and the proportional pressure control valve can cost effectively and to save installation space to a Be summarized double magnets.
  • An electro-hydraulic tensioning device S for a machine tool comprises as main components a hydraulically actuable tensioning element 1, a hydraulic controller H and a superordinate controller 4, e.g. an electronic Control, if necessary. With control function, and a setting device 5 for electrical Adjusting the clamping pressure. Furthermore, a display 6 for a good or Error signal be provided.
  • the clamping element 1 is connected via working lines 2, 3 to the hydraulic control H, which is supplied by a pump P (or from a pressure accumulator).
  • a main circuit 19 originating from the pump P is a clamping pressure valve V (e.g. a pressure reducing valve) arranged with a control piston K, the clamping pressure for a directional control valve W sets, from which the working lines 2, 3 go out.
  • Main circuit 19 branches upstream of the clamping pressure valve V a setting pilot circuit 15th to a control chamber 14 of the clamping pressure valve V from.
  • In the control chamber 14 is an adjusting piston 13 slidably disposed, for biasing a setting spring 12 for the control piston K is used.
  • the directional control valve W is, by two magnets 7, 8 from the neutral position shown adjusted in each case a control position.
  • a tap 9 provided for the actual clamping pressure, either in the working line 2 or is fed into the working line 3.
  • a control line 10 connected, which leads to the clamping pressure valve V, such that the control piston K is acted upon by the actual clamping pressure against the force of the adjusting spring 12.
  • A is an analog-pressure transducer A, for example, contains a transducer element 30, which consists of the actual clamping pressure in the Control line 11 generates a proportional voltage or current signal and to the Control device 4 transmits.
  • a return line 16 leads to a tank T.
  • a proportional pressure control valve B and a safety valve C arranged in the adjustment pilot circuit 15 to the control chamber 14 .
  • the signal pressure in the Control chamber 14 is by means of a proportional solenoid 18 of the proportional pressure control valve set, which is also connected to the return line 16 is.
  • the safety valve C is between the shut-off position set by a spring 28 O by means of a black / white magnet 17 in a passage position c switchable.
  • a shut-off D contained in the shut-off position O shuts off leak-free in both flow directions.
  • In the in 1 shutoff position O of the backup valve C can therefore no Pressure fluid from the control chamber 14 drain, but no pressure fluid over the proportional pressure control valve B are fed.
  • the target clamping pressure by means of set the adjustment 5.
  • the proportional solenoid 18 receives power with a certain value, e.g. once the directional control valve W in one of its control positions is placed.
  • the safety valve C from the shut-off position shown O switched to its passage position c (energizing the Black and white magnets 17).
  • the control pressure is set, the one certain position of the adjusting piston 13 and a certain bias the adjusting spring 12 causes the recirculating piston K against the actual clamping pressure in the Control line 10 charged.
  • the analogue pressure transducer 30 reports the actual clamping pressure to the control device 4, the one Adjustment can be made between the actual clamping pressure and the nominal clamping pressure. If the actual clamping pressure coincides with the set clamping pressure, then first the Fuse valve C is switched to the shut-off position O and then the proportional solenoid 18 of the proportional pressure control valve B completely de-energized. This will the pilot control setting circuit 15 between the proportional pressure control valve B and the Relief valve C to the return line 16 relieved. The signal pressure in the control chamber 14 remains held.
  • the hydraulic control H in FIGS. 2 and 3 is composed of a plurality of blocks, in which the clamping pressure valve V, the directional control valve W, the proportional pressure control valve B, and the safety valve C are included.
  • the proportional pressure control valve B and the safety valve C are side by side in a headboard 20 of the control chamber 14 is arranged, in which the adjusting piston 13, the adjusting spring 12th applied.
  • the left in Fig. 2 end of the control piston K is the return line 16th relieved.
  • At the right in Fig. 2 end of the control piston K is above the control line 10, the actual clamping pressure on.
  • the analogue pressure transducer A is directly on the one too Way control valve W containing block mounted such that it reduces the pressure in the Control line 10 (or the unspecified here tap 9) picks up.
  • the magnets 18, 17 are combined in a double magnet 21, which has a single plug connection 29 has.
  • Fig. 3 it can be seen that the adjusting pilot circuit 15 in a chamber 22 in Head part 20 opens.
  • the proportional pressure control valve B is housed (Cartridge). From Proporbonal-Druckregelvenfil B leads a channel 23rd to a chamber 24 in which the safety valve C is mounted.
  • the safety valve C has a hollow valve insert 25 on which a valve seat 26 is formed.
  • a closing element 27 which is a spherical or conical sealing surface has (seat valve) and by a spring 28 in the flow direction from the channel 23 to the control chamber 14, the closing element 27 in the direction of the valve seat 26 charged.
  • the closing element 27 can by the black / white magnet 18th be lifted against the force of the spring 28 from the valve seat 26 (passage position).
  • Fig. 3 illustrates the shut-off position of the backup valve C.
  • the shut-off device D of the safety valve is not mandatory. It could the safety valve also be designed so that it is in the shut-off position only in the flow direction from the control chamber 14 to the proportional pressure control valve B seals leak-free.
  • the magnets 17, 18 could be from each other be separate units.
  • the valves B, C could be arranged differently than shown.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (4)

  1. Dispositif de serrage (S) électrohydraulique pour une machine-outil, comportant un élément de serrage (1) pouvant être actionné par l'intermédiaire d'une vanne pilote de distribution (W) dans un circuit principal et d'une vanne de pression de serrage (V) montée en amont de celle-ci, une vanne de régulation proportionnelle (B) disposée en amont d'une vanne de sécurité (C) dans un circuit pilote (15) hydraulique menant à une chambre de commande (14) de la vanne de pression de serrage (V) pour régler une pression de réglage correspondant à la pression de serrage de consigne afin de pré-contraindre un ressort de réglage qui, dans la vanne de pression de serrage (V), sollicite un piston de régulation (K) réglant la pression de serrage de consigne, en amont de la vanne pilote de distribution (W) contre la pression de serrage réelle captée dans la vanne pilote de distribution (W) à un piquage (9) de pression de serrage réelle de la vanne pilote de distribution pour transmission au piston de régulation (K) de la vanne de pression de serrage (V), et comportant un dispositif de commande (4) pour actionner la vanne de régulation de pression proportionnelle (B) et la vanne de sécurité (C), caractérisé en ce que, pour le réglage, la surveillance et/ou la régulation de la pression de réglage dans la chambre de commande (14) et/ou de la pression de serrage de consigne réglée par le piston de régulation (K), est prévu exclusivement un capteur de pression analogique (A) pour la pression de serrage réelle raccordé au piquage (9) de pression de serrage réelle et raccordé au dispositif de commande (4) en tant qu'indicateur de valeur réelle.
  2. Dispositif de serrage (S) électrohydraulique selon la revendication 1, caractérisé en ce que la vanne de sécurité (C) peut être réglée entre une position de blocage maintenant la pression de réglage sans fuite dans la chambre de commande (14) et une position de passage, et présente un dispositif de blocage (D) qui, dans la position de blocage, est étanche sans fuite dans les deux sens d'écoulement.
  3. Dispositif de serrage (S) électrohydraulique selon la revendication 1, caractérisé en ce que le capteur de pression analogique (A) présente un élément convertisseur (38) sensible à la pression avec lequel une tension de signal ou un courant de signal peut être généré proportionnellement à la pression de serrage réelle.
  4. Dispositif de serrage (S) électrohydraulique selon la revendication 1, caractérisé en ce que la vanne de sécurité (C) et la vanne de régulation de pression proportionnelle (B) sont disposées conjointement dans une partie de tête (20) de la chambre de commande (14), et que l'aimant proportionnel (18) de la vanne de régulation de pression proportionnelle (B) et l'aimant tout ou rien (17) de la vanne de sécurité (C) sont réunis en un aimant double (21), qui est monté sur la partie de tête.
EP03006775A 2002-06-10 2003-03-25 Dispositif de serrage électrohydraulique Expired - Fee Related EP1371853B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20208992U DE20208992U1 (de) 2002-06-10 2002-06-10 Elektrohydraulische Spannvorrichtung
DE20208992U 2002-06-10

Publications (2)

Publication Number Publication Date
EP1371853A1 EP1371853A1 (fr) 2003-12-17
EP1371853B1 true EP1371853B1 (fr) 2005-03-16

Family

ID=29285781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03006775A Expired - Fee Related EP1371853B1 (fr) 2002-06-10 2003-03-25 Dispositif de serrage électrohydraulique

Country Status (2)

Country Link
EP (1) EP1371853B1 (fr)
DE (2) DE20208992U1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005008763A1 (de) * 2005-02-25 2006-08-31 Bosch Rexroth Ag Hydraulisch verstellbares Druckventil in Sitzbauweise
DE102012005224A1 (de) * 2012-03-15 2013-09-19 Festo Ag & Co. Kg Fluidsystem und Verfahren zum Betreiben eines Fluidsystems
DE102016003973A1 (de) * 2016-04-01 2017-10-05 Hydac System Gmbh Sicherheitsschaltung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9310932U1 (de) 1993-07-21 1993-09-30 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Elektrohydraulische Steuervorrichtung
DE29710129U1 (de) 1997-06-10 1997-08-14 Heilmeier & Weinlein Fabrik für Oel-Hydraulik GmbH & Co KG, 81673 München Elektrohydraulische Spannvorrichtung
US6199378B1 (en) 1999-09-21 2001-03-13 Caterpillar Inc. Off-setting rate of pressure rise in a fluid system
SE0001608L (sv) 2000-04-28 2001-06-11 Hiab Ab Hydraulisk kran med organ för registrering av lyftning och nedsättning av last, förfarande för sådan registrering samt förfarande för beräkning av utmattningsbelastningen hos sådan kran

Also Published As

Publication number Publication date
DE20208992U1 (de) 2003-10-23
DE50300358D1 (de) 2005-04-21
EP1371853A1 (fr) 2003-12-17

Similar Documents

Publication Publication Date Title
EP2638297B1 (fr) Entraînement hydraulique ou pneumatique pour l'actionnement d'un appareil de robinetterie comportant une soupape de réglage ou de commande
EP0473030A1 (fr) Distributeur proportionnel à siège à 4 voies
LU88277A1 (de) Vorgesteuertes Servoventil
DE4302755A1 (de) Steuereinrichtung zur Regelung einer von zwei zusammenwirkenden Hydraulik-Verbrauchern abhängigen Arbeitskenngröße
EP0433791B1 (fr) Actuateur pour une valve d'alimentation
DE4404224A1 (de) Hydraulische Funktionseinheit
DE4330038A1 (de) Hydraulische Sicherheitsschaltung
EP1371853B1 (fr) Dispositif de serrage électrohydraulique
DE3836453A1 (de) Ventilanordnung zur steuerung und ueberwachung des arbeitsdruckes eines hydraulischen verbrauchers
DE102012016838B4 (de) Hydraulische Steuerschaltung für eine hydraulisch betätigte Gießeinheit
DE4230183C2 (de) Steuervorrichtung für Hydromotoren
DE4237901C2 (de) Elektrohydraulische Steuervorrichtung und Druckminderventil
DE102013213537A1 (de) Steuereinrichtung für einen mit einem Arbeitsfluid betriebenen Aktor und Verfahren zum Betreiben der Steuereinrichtung
EP1970787B1 (fr) Soupape à siège à réglage de pression
EP0884486B1 (fr) Dispositif de serrage électrohydraulique
DE9210647U1 (de) Hydraulische Steuervorrichtung
DE29612775U1 (de) Stellungsregler sowie Regelventil mit einem derartigen Stellungsregler
WO2005093263A1 (fr) Systeme de commande hydraulique
DE3880586T2 (de) Hydraulisches steuersystem.
DE10248319A1 (de) Ventileinheit
DE2029287A1 (de) Servostellantrieb mit hydraulischer Waage
EP1574720B1 (fr) Commande électro-hydraulique et méthode de sa déactivation
EP0884484B1 (fr) Dispositif de serrage électrohydraulique
DE29612346U1 (de) Einrichtung zum Selbsttest pneumatischer Antriebe sowie Stellungsregler mit einer derartigen Einrichtung
DE4320937A1 (de) Stellantrieb für ein Regelventil

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): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

17P Request for examination filed

Effective date: 20040129

17Q First examination report despatched

Effective date: 20040430

AKX Designation fees paid

Designated state(s): CZ DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CZ DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

REF Corresponds to:

Ref document number: 50300358

Country of ref document: DE

Date of ref document: 20050421

Kind code of ref document: P

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20050420

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20051219

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20070329

Year of fee payment: 5

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20080325

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080325

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20120405

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20131129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130402

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20140322

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CZ

Payment date: 20150302

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150325

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50300358

Country of ref document: DE

Representative=s name: GROSSE, SCHUMACHER, KNAUER, VON HIRSCHHAUSEN, DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160325

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20170329

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50300358

Country of ref document: DE

Representative=s name: GROSSE, SCHUMACHER, KNAUER, VON HIRSCHHAUSEN, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50300358

Country of ref document: DE

Owner name: HAWE HYDRAULIK SE, DE

Free format text: FORMER OWNER: HAWE HYDRAULIK GMBH & CO. KG, 81673 MUENCHEN, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50300358

Country of ref document: DE

Representative=s name: GROSSE, SCHUMACHER, KNAUER, VON HIRSCHHAUSEN, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 50300358

Country of ref document: DE

Owner name: HAWE HYDRAULIK SE, DE

Free format text: FORMER OWNER: HAWE HYDRAULIK SE, 81673 MUENCHEN, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50300358

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181002

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230523