EP1371853B1 - Elektrohydraulische Spannvorrichtung - Google Patents
Elektrohydraulische Spannvorrichtung Download PDFInfo
- 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 - Lifetime
Links
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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)
Description
- Fig. 1
- ein schematisches Blockschaltbild einer elektrohydraulischen Spannvorrichtung,
- Fig. 2
- eine Seitenansicht, teilweise im Schnitt, einer konkreten Ausführung der Hydrauliksteuerung, und
- Fig. 3
- einen Teilschnitt in der Schnittebene III-III in Fig. 2.
Claims (4)
- Elektrohydraulische Spannvorrichtung (S) für eine Werkzeugmaschine, mit einem über ein Wegesteuerventil (W) in einem Hauptkreis (19) und ein diesem vorgesetztes Spanndruckventil (V) betätigbaren Spannelement (1), einem in einem zu einer Steuerkammer (14) des Spanndruckventils (V) führenden, hydraulischen Vorsteuerkreis (15) stromauf eines Sicherungsventils (C) angeordneten Proportional-Druckregelventil (B) zum Einstellen eines mit dem Soll-Spanndruck korrespondierenden Stelldrucks zum Vorspannen einer Stellfeder, die im Spanndruckventil (V) einen den Soll-Spanndruck stromauf des Wegesteuerventils (W) einstellenden Regelkolben (K) gegen den im Wegesteuerventil (W) an einer ist-Spanndruck-Anzapfung (9) des Wegesteuerventils zum Übertragen auf den Regelkolben (K) des Spanndruckventils (V) abgegriffenen Ist-Spanndruck beaufschlagt, und mit einer Steuervorrichtung (4) zum Betätigen des Proportional-Druckregelventils (B) und des Sicherungsventils (C), dadurch gekennzeichnet, dass zum Einstellen, Überwachen und/oder Regeln des Stelldrucks in der Steuerkammer (14) und/oder des vom Regelkolben (K) eingestellten Soll-Spanndrucks ausschließlich ein an die Ist- Spanndruck-Anzapfung (9) angeschlossener Analog-Druckaufnehmer (A) für den Ist-Spanndruck vorgesehen und als Ist-Wertgeber an die Steuervorrichtung (4) angeschlossen ist.
- Elektrohydraulische Spannvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Sicherungsventil (C) zwischen einer den Stelldruck in der Steuerkammer (14) leckagefrei haltenden Absperrstellung und einer Durchgangsstellung verstellbar ist und eine Absperrvorrichtung (D) aufweist, die in der Absperrstellung in beiden Strömungsrichtungen leckagefrei dicht ist.
- Elektrohydraulische Spannvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Analog-Druckaufnehmer (A) ein drucksensitives Wandlerelement (38) aufweist, mit dem proportional zum Ist-Spanndruck eine Signalspannung oder ein Signalstrom generierbar ist.
- Elektrohydraulische Spannvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Sicherungsventil (C) und das Proportional-Druckregelventil (B) in einem Kopfteil (20) der Steuerkammer (14) gemeinsam angeordnet sind, und dass der Proportionalmagnet (18) des Proportional-Druckregelventils (B) und der Schwarz/Weiß-Magnet (17) des Sicherungsventils (C) zu einem Doppelmagneten (21) zusammengefasst sind, der am Kopfteil montiert ist.
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 (de) | 2003-12-17 |
EP1371853B1 true EP1371853B1 (de) | 2005-03-16 |
Family
ID=29285781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03006775A Expired - Lifetime EP1371853B1 (de) | 2002-06-10 | 2003-03-25 | Elektrohydraulische Spannvorrichtung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1371853B1 (de) |
DE (2) | DE20208992U1 (de) |
Families Citing this family (3)
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)
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 |
-
2002
- 2002-06-10 DE DE20208992U patent/DE20208992U1/de not_active Expired - Lifetime
-
2003
- 2003-03-25 DE DE50300358T patent/DE50300358D1/de not_active Expired - Lifetime
- 2003-03-25 EP EP03006775A patent/EP1371853B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE50300358D1 (de) | 2005-04-21 |
DE20208992U1 (de) | 2003-10-23 |
EP1371853A1 (de) | 2003-12-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2638297B1 (de) | Hydraulischer oder pneumatischer antrieb zur betätigung einer armatur mit einem regel- oder schaltventil | |
EP0473030A1 (de) | Proportional-4-Wegeventil in Sitzbauweise | |
LU88277A1 (de) | Vorgesteuertes Servoventil | |
DE4302755A1 (de) | Steuereinrichtung zur Regelung einer von zwei zusammenwirkenden Hydraulik-Verbrauchern abhängigen Arbeitskenngröße | |
EP0433791B1 (de) | Antrieb für ein Speiseventil | |
DE69417153T2 (de) | Steuerungsvorrichtung eines Stellgliedes einer Baumaschine | |
DE102012016838B4 (de) | Hydraulische Steuerschaltung für eine hydraulisch betätigte Gießeinheit | |
DE4330038A1 (de) | Hydraulische Sicherheitsschaltung | |
EP1371853B1 (de) | Elektrohydraulische Spannvorrichtung | |
DE3836453A1 (de) | Ventilanordnung zur steuerung und ueberwachung des arbeitsdruckes eines hydraulischen verbrauchers | |
DE4230183C2 (de) | Steuervorrichtung für Hydromotoren | |
DE4237901C2 (de) | Elektrohydraulische Steuervorrichtung und Druckminderventil | |
EP1970787B1 (de) | Druckregel-Sitzventil | |
DE102013213537A1 (de) | Steuereinrichtung für einen mit einem Arbeitsfluid betriebenen Aktor und Verfahren zum Betreiben der Steuereinrichtung | |
EP0884486B1 (de) | Elektrohydraulische Spannvorrichtung | |
DE29612346U1 (de) | Einrichtung zum Selbsttest pneumatischer Antriebe sowie Stellungsregler mit einer derartigen Einrichtung | |
DE9210647U1 (de) | Hydraulische Steuervorrichtung | |
DE29612775U1 (de) | Stellungsregler sowie Regelventil mit einem derartigen Stellungsregler | |
WO2005093263A1 (de) | Hydraulisches steuersystem | |
EP2157320A1 (de) | Hydrauliksteuerung für einen Hydromotor | |
DE4320937A1 (de) | Stellantrieb für ein Regelventil | |
DE3880586T2 (de) | Hydraulisches steuersystem. | |
EP1574720B1 (de) | Elektrohydraulische Steuervorrichtung und Verfahren zu ihrer Abschaltung | |
EP0884484B1 (de) | Elektrohydraulische Spannvorrichtung | |
EP1371854B1 (de) | Elektrohydraulische Spannvorrichtung |
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 |