EP1331199A2 - Steuervorrichtung, insbesondere für den Einsatz bei hydraulisch arbeitenden Hubeinrichtungen - Google Patents
Steuervorrichtung, insbesondere für den Einsatz bei hydraulisch arbeitenden Hubeinrichtungen Download PDFInfo
- Publication number
- EP1331199A2 EP1331199A2 EP20020025356 EP02025356A EP1331199A2 EP 1331199 A2 EP1331199 A2 EP 1331199A2 EP 20020025356 EP20020025356 EP 20020025356 EP 02025356 A EP02025356 A EP 02025356A EP 1331199 A2 EP1331199 A2 EP 1331199A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure
- control
- pressure compensator
- valve
- throttle valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- 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
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
- F15B11/05—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed specially adapted to maintain constant speed, e.g. pressure-compensated, load-responsive
-
- 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
- F15B20/008—Valve 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
- F15B2211/40—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
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40576—Assemblies of multiple 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
- F15B2211/41—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
- F15B2211/575—Pilot pressure control
- F15B2211/5756—Pilot pressure control for opening a valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/635—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
-
- 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
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
-
- 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
- F15B2211/72—Output members, e.g. hydraulic motors or cylinders or control therefor having locking means
Definitions
- the invention relates to a control device, in particular for use Hydraulic lifting and lowering devices loads, with a connected to a return line of the lifting device, electrically controllable throttle valve and with a Pressure compensator, which provides at least one blocking and one control position is and which interacts with an unlocking device.
- a generic hydraulic control device is characterized by DE 44 23 644 C2 known.
- the known hydraulic control device is for use in the field of lifting devices, in particular for lifting masts of forklifts, provided one with a storage tank for hydraulic fluid connected feed pump as a pressure supply and a control piston connected to a return line has, which acts as a pressure compensator, and wherein the return line with connected to the reservoir.
- the control piston has an inlet, in the conveying direction of the pump behind a check valve to a Pump connected to the lifting device connecting conveyor line is and via a control line in such a way to a connecting line between the pump and the check valve is connected, that the control piston in the lowering direction as a discharge pressure balance and in the stroke direction as Circulating pressure balance is formed.
- the control piston is of a spring loaded, to the opposing acting a biasing spring is arranged, the via their spring force an interconnection of a control piston as open Pressure compensator, on the one hand, at rest without external influence a fürlenfinposition is taken, and as a closed pressure balance on the other hand, when at rest without external action a Lock position is taken, pretends.
- the rule arrangement is in Countersinking of the lifting device designed as a two-way - current controller and in the stroke direction as a three-way current controller. For switching the Regulating piston from the function as a discharge pressure balance in the function as Circulating pressure balance is an evaluation of a pressure difference in the range the check valve made. Further, between the control piston and the lifting device designed as a throttle valve orifice arranged and the throttle valve itself forms a two - way valve.
- the lowering function of forklift trucks is becoming very demanding today posed. Thus, in addition to the so-called. "Stacker leaks" a load-independent Limitation of the maximum speed, high lowering speeds even with an empty fork and a sensitive Dosing the lowering speed itself.
- the lowering function in modern Forklifts is often called a seat valve with steady opening behavior and series-connected constant volumetric flow controller or as a slide valve designed with discharge pressure balance, with seat or slide valve increasingly are electrically proportional actuated.
- the standard EN 1175, Part 1, or 2 safety of industrial trucks-electrical requirements, General requirements for industrial trucks with battery electric Drive or internal combustion engine, that in case of an error occurring the load movement can be stopped anyway.
- a valve arrangement in whose housing a spring-loaded in the closing direction valve body is arranged.
- the pertinent valve body controls the flow through a fluid channel whose input can be connected to a constant-displacement pump and whose outlet can be connected to a tank.
- On the not acted upon by the pump pressure side of the valve body is a control chamber.
- a throttle is arranged between the fluid channel and the control chamber.
- a switching valve connects in its rest position the control chamber with the tank and interrupts this connection in its working position.
- a switchable abutment for the spring increases in the working position of the switching valve, the bias of the spring relative to the rest position of the valve.
- valve body and the slide of the switching valve are arranged in a common bore, wherein a spring is guided between the valve body and the slide.
- the slide of the switching valve is used at least at interrupted connection between the control chamber and the tank as an abutment for the spring.
- the valve assembly in particular as a relief valve for a supplied by a constant pump consumer used, for example in the form of a conventional forklift, the known hydraulic valve assembly in addition to an operating state “hold” for the fork, the operating states “lifting slowly” and “Lifting fast”, as well as “lowering slowly” and “lowering fast” allows.
- the invention has the object, while maintaining the advantages of the known solution, namely to provide a compact constructive control device at low manufacturing costs available, which allows a high lowering speed with empty fork in normal operation, so to further improve in that even in the event of an accident, the safety is significantly increased and there can not be an undesired lowering of the lifting device with or without load.
- This object is achieved by a hydraulic control device with the features of claim 1 in its entirety.
- the throttle valve is closed in normal position and becomes electric preferably controlled via a proportional pressure control valve.
- the Pressure compensator is designed as a discharge pressure balance so that they are in normal position also remains closed and only when pressing the lowering function the open control position occupies.
- the pressure compensator piston is in Normal position held by a spring in the locked position. Only by control an unblocking device via a directional valve in pending Senksignal is the unlocking of the piston and the pressure compensator can regulate. Then, for example, the piston of the throttle valve remains at a Error after switching off the Senksignals in open position, the Load movement stopped by closing the pressure compensator (fail-safe position).
- the inventive control device to an additional can be dispensed in series valve can be on the one hand realize the solution of the invention cost and the other is the lowering speed when lowering without load not by a additional flow resistance unnecessarily reduced.
- the unlocking device is an unlocking cylinder with an energy store, Preferably in the form of a compression spring, the pressure compensator in seeks to keep their blocking position, with a pressure supply via a Switching device switchable with its fluid pressure of the pertinent Force direction of the unlocking counteracts.
- the unlocking device is thus able to use its energy storage device, the pressure compensator in Move direction of their blocking position and safe in this locked position to keep.
- the Entsperrzylinder and the pressure balance are mechanically via an actuating piston of the unlocking cylinder coupled together.
- Control device is between the lifting device and the throttle one Control line connected to the return line, the pending hydraulic pressure as a control signal to the pressure compensator passes, wherein by means of a tapping line the pending hydraulic pressure between Throttle valve and pressure compensator as another control signal with opposite Direction of action is passed to the pressure compensator. This is achieved a current control function.
- FIG. 1 shows in the manner of a circuit diagram an embodiment of the hydraulic Control device, wherein the structural components shown there only insofar as they represent the lowering function for a hydraulic working lifting device 10 relate to a load compensation and a redundant safety switching device.
- the lifting device 10 is in the manner of a hydraulic working cylinder constructed with a working piston 12 and an actuating rod 14.
- the operating rod 14th is connected at its one free end to the working piston 12 and to its other free end with a load receiving device 16, for example is loaded with a cargo 18 as a load. Further subdivided the working piston 12 within the cylinder housing this in one Piston chamber 20 and a rod space 22.
- the lifting device 10 should represent a mast from a forklift truck; but she could as well well od from a hydraulically operated Aufzug Surprise. Like. Exist, whereby a plurality of lifting devices 10 in obvious successive or series arrangement trigger one or more lifting operations could (not shown).
- valve block 28 Between the lifting device 10 and a fluid reservoir 24 (Tank) is in a return line 26 a designated as a whole by 28 Valve block switched.
- the valve block 28 has a connection A for the connection of the lifting device 10 and a connection T for the connection of the fluid reservoir 24.
- the valve control block 28 has a connection point P for pressure supply, for example in the form of a hydraulic pump 30, with its suction side to the fluid - reservoir 24 is also connected.
- the pressure supply could also be internally via the hydraulic circuit of Forklift done.
- the valve block 28 has a connected to the return line 26 Pressure compensator 32, which is also called with discharge pressure balance on.
- the Pressure compensator 32 is shown in its unactuated normal position 34 in FIG. in which they the return line 26 relative to the fluid reservoir 24 blocks. In addition to this normal or blocking position 34, the Pressure compensator 32 a control position 36 with throttle function. On your an actuating side with pressure control spring 40, the pressure compensator 32 at a tap line 42 connected in the return line 26 between Throttle and pressure compensator 32 is connected.
- the pressure compensator 32 acts with an unlocking device 44, which in the manner of a Entsperrzylinders is constructed with a piston rod portion 46, which has an energy storage 48 in the form of a compression spring the pressure compensator 32 in its normal or to keep blocking position 34.
- control position 36 is via a corresponding actuator, such as Joy stick (not shown) given a lowering signal and the switching device 56 is controlled simultaneously and automatically, with the pressure supply 30 under pressure to the connecting line 54 is connected.
- the fluid pressure of the pressure supply 30 then penetrates into the rod annulus 52 of the unlocking device 44 and pushes the Piston rod member 46 seen in the direction of the Fig.1 to the right against the action of the energy storage 48 in the corresponding housing parts into it.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Transportation (AREA)
- Analytical Chemistry (AREA)
- Structural Engineering (AREA)
- Combustion & Propulsion (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
- Lifting Devices For Agricultural Implements (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
Description
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, unter Beibehalten der Vorteile der bekannten Lösung, nämlich eine kompakt aufbauende Steuervorrichtung bei geringen Herstellkosten zur Verfügung zu stellen, die im Normalbetrieb eine hohe Senkgeschwindigkeit bei leerer Lastgabel erlaubt, diese derart weiter zu verbessern, daß auch bei einem Störfall die Sicherheit deutlich erhöht ist und es nicht zu einem ungewollten Absenken der Hubeinrichtung mit oder ohne Last kommen kann. Eine dahingehende Aufgabe löst eine hydraulische Steuervorrichtung mit den Merkmalen des Patentanspruches 1 in seiner Gesamtheit.
- Fig.1
- in der Art eines Schaltplanes die wesentlichen Komponenten für eine Senkfunktion bei einer Hubvorrichtung mit Lastkompensation und redundant wirkender Sicherheitseinrichtung;
- Fig.2,3,4 und 5
- einen Ventilblock mit den relevanten Ventilkomponenten zur Realisierung einer Schaltvorrichtung nach der Fig.1, und zwar in Normalstellung, Regelstellung, Fail-Safe-Stellung sowie beim Senken ohne Last.
Claims (7)
- Steuervorrichtung, insbesondere für den Einsatz bei hydraulisch arbeitenden Hubeinrichtungen (10) zum Anheben und Absenken von Lasten, mit einem an eine Rücklaufleitung (26) der Hubeinrichtung (10) angeschlossenen, elektrisch ansteuerbaren Drosselventil (60) sowie mit einer Druckwaage (32), die mit mindestens einer Sperr(34)- und einer Regelstellung (36) versehen ist und die mit einer Entsperreinrichtung (44) zusammenwirkt, dadurch gekennzeichnet, daß die Druckwaage (32) in ihrer Normalstellung die Rücklaufleitung (26) sperrt, daß durch Ansteuern der Entsperreinrichtung (44) die Druckwaage (32) beim Absenken der Last ihre Regelstellung einnimmt und daß bei einem Ausfall des Drosselventils (60) mittels der Entsperreinrichtung (44) die Druckwaage (32) in ihre Sperrstellung (34) bringbar ist oder bei einem Ausfall der Druckwaage (32) das Drosselventil (60) seine Sperrstellung (63) einnimmt.
- Steuervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Entsperreinrichtung (44) ein Entsperrzylinder ist mit einem Energiespeicher (48), vorzugsweise in Form einer Druckfeder, der die Druckwaage (32) in ihrer Sperrstellung (34) zu halten sucht, und daß eine Druckversorgung über eine Zuschalteinrichtung (56) zuschaltbar mit ihrem Fluiddruck der dahingehenden Kraftrichtung der Entsperreinrichtung (44) entgegenwirkt.
- Steuervorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Entsperrzylinder und die Druckwaage (32) über einen Betätigungskolben (46) des Entsperrzylinders mechanisch miteinander gekoppelt sind.
- Steuervorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß die Zuschalteinrichtung (56) aus einem 3/2-Wege-Ventil gebildet ist.
- Steuervorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Drosselventil (60) über ein Proportional-Druckregelventil (62) angesteuert stetig einstellbar ist, das über einen Direktanschluß (64) permanent an eine Druckversorgung angeschlossen ist.
- Steuervorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zwischen der Hubeinrichtung (10) und dem Drosselventil (60) eine Steuerleitung (66) an die Rücklaufleitung (26) angeschlossen ist, die den anstehenden hydraulischen Druck als Steuersignal an die Druckwaage (32) weitergibt und daß mittels einer Abgriffsleitung (42) der anstehende hydraulische Druck zwischen Drosselventil (60) und Druckwaage (32) als weiteres Steuersignal mit entgegengesetzter Wirkung an die Druckwaage (32) weitergegeben ist.
- Steuervorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Druckwaage (32), die Entsperreinrichtung (44), das Drosselventil (60) und das Druckregelventil (62) als eine Baueinheit in einem Ventilblock (26) zusammengefaßt sind.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10202607 | 2002-01-24 | ||
DE10202607A DE10202607C1 (de) | 2002-01-24 | 2002-01-24 | Steuervorrichtung, insbesondere für den Einsatz bei hydraulisch arbeitenden Hubeinrichtungen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1331199A2 true EP1331199A2 (de) | 2003-07-30 |
EP1331199A3 EP1331199A3 (de) | 2004-05-12 |
EP1331199B1 EP1331199B1 (de) | 2006-09-13 |
Family
ID=7712928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02025356A Expired - Lifetime EP1331199B1 (de) | 2002-01-24 | 2002-11-14 | Steuervorrichtung, insbesondere für den Einsatz bei hydraulisch arbeitenden Hubeinrichtungen |
Country Status (5)
Country | Link |
---|---|
US (1) | US6786132B2 (de) |
EP (1) | EP1331199B1 (de) |
AT (1) | ATE339386T1 (de) |
DE (2) | DE10202607C1 (de) |
ES (1) | ES2271174T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1895167A2 (de) * | 2006-08-21 | 2008-03-05 | Kabushiki Kaisha Toyoda Jidoshokki | Hydraulische Steuervorrichtung |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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AU2006308808B2 (en) * | 2005-11-04 | 2013-09-19 | Mark Andrew Fogarty | Pressure release valve, system and method of use |
DE102007062649A1 (de) | 2007-12-24 | 2009-06-25 | Hydac Electronic Gmbh | Ventilvorrichtung |
DE102012107256B4 (de) | 2012-05-07 | 2023-08-31 | Buchholz Hydraulik Gmbh | Hydraulischer Hubantrieb einer mobilen Arbeitsmaschine |
DE102012010522A1 (de) * | 2012-05-25 | 2013-11-28 | Hydac Fluidtechnik Gmbh | Ventil für Ventilanordnung |
CN103629194B (zh) * | 2013-12-10 | 2015-11-25 | 沈阳东北电力调节技术有限公司 | 机械式快动的集成式电液执行器 |
DE102014202436A1 (de) * | 2014-02-11 | 2015-08-13 | Franz Xaver Meiller Fahrzeug- Und Maschinenfabrik - Gmbh & Co Kg | Hydraulisches Kippsystem für einen mittels eines Kippventils stetig steuerbaren, in der Senkgeschwindigkeit nicht durch das Kippventil begrenzten Senkbetrieb |
US9914524B2 (en) * | 2015-01-19 | 2018-03-13 | The Boeing Company | Latch pin assembly for folding wing tip system |
DE102017008359A1 (de) | 2017-09-06 | 2019-03-07 | Hydac Fluidtechnik Gmbh | Ventil |
DE102018104586A1 (de) | 2018-02-28 | 2019-08-29 | Jungheinrich Aktiengesellschaft | Flurförderzeug mit mindestens einem hydraulischen Masthubzylinder |
CN108488130B (zh) * | 2018-05-18 | 2019-12-24 | 江苏南京白马现代农业高新技术产业园有限公司 | 一种控制阀装置 |
CN108612700B (zh) * | 2018-05-18 | 2020-11-24 | 安徽仕烽油压科技有限公司 | 插装式翻转控制阀 |
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DE4239321A1 (de) * | 1992-11-23 | 1994-05-26 | Heilmeier & Weinlein | Elektrohydraulisches Hubmodul |
DE4423644A1 (de) * | 1994-07-06 | 1996-01-11 | Buchholz Hydraulik | Hydraulische Steuervorrichtung |
DE19622763A1 (de) * | 1996-06-07 | 1997-12-11 | Rexroth Mannesmann Gmbh | Ventilanordnung |
EP0893607A1 (de) * | 1997-07-25 | 1999-01-27 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Magnetbetätigtes Ablassventil |
DE10010670A1 (de) * | 2000-03-04 | 2001-09-13 | Jungheinrich Ag | Hydraulische Hubvorrichtung für batteriebetriebene Flurförderzeuge |
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---|---|---|---|---|
JPS54162353A (en) * | 1978-06-13 | 1979-12-22 | Toshiba Corp | Hydraulic circuit for driving cargo handling apparatus |
DE3621854A1 (de) * | 1986-06-30 | 1988-01-07 | Rexroth Mannesmann Gmbh | Steuerschaltung fuer ein hydraulisches kraftheber-regelsystem |
US6065386A (en) * | 1996-01-30 | 2000-05-23 | Mannesmann Rexroth Ag | Hydraulic device for controlling a hydraulic-fluid flow |
-
2002
- 2002-01-24 DE DE10202607A patent/DE10202607C1/de not_active Expired - Fee Related
- 2002-11-14 AT AT02025356T patent/ATE339386T1/de active
- 2002-11-14 ES ES02025356T patent/ES2271174T3/es not_active Expired - Lifetime
- 2002-11-14 DE DE50208129T patent/DE50208129D1/de not_active Expired - Lifetime
- 2002-11-14 EP EP02025356A patent/EP1331199B1/de not_active Expired - Lifetime
-
2003
- 2003-01-23 US US10/349,174 patent/US6786132B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4239321A1 (de) * | 1992-11-23 | 1994-05-26 | Heilmeier & Weinlein | Elektrohydraulisches Hubmodul |
DE4423644A1 (de) * | 1994-07-06 | 1996-01-11 | Buchholz Hydraulik | Hydraulische Steuervorrichtung |
DE19622763A1 (de) * | 1996-06-07 | 1997-12-11 | Rexroth Mannesmann Gmbh | Ventilanordnung |
EP0893607A1 (de) * | 1997-07-25 | 1999-01-27 | HEILMEIER & WEINLEIN Fabrik für Oel-Hydraulik GmbH & Co. KG | Magnetbetätigtes Ablassventil |
DE10010670A1 (de) * | 2000-03-04 | 2001-09-13 | Jungheinrich Ag | Hydraulische Hubvorrichtung für batteriebetriebene Flurförderzeuge |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1895167A2 (de) * | 2006-08-21 | 2008-03-05 | Kabushiki Kaisha Toyoda Jidoshokki | Hydraulische Steuervorrichtung |
EP1895167A3 (de) * | 2006-08-21 | 2009-08-26 | Kabushiki Kaisha Toyota Jidoshokki | Hydraulische Steuervorrichtung |
US7650907B2 (en) | 2006-08-21 | 2010-01-26 | Kabushiki Kaisha Toyota Jidoshokki | Hydraulic control apparatus |
Also Published As
Publication number | Publication date |
---|---|
ES2271174T3 (es) | 2007-04-16 |
US6786132B2 (en) | 2004-09-07 |
EP1331199B1 (de) | 2006-09-13 |
DE10202607C1 (de) | 2003-07-31 |
DE50208129D1 (de) | 2006-10-26 |
US20030136124A1 (en) | 2003-07-24 |
EP1331199A3 (de) | 2004-05-12 |
ATE339386T1 (de) | 2006-10-15 |
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