EP2541071B1 - Agencement de soupapes pour un système de commande hydraulique - Google Patents

Agencement de soupapes pour un système de commande hydraulique Download PDF

Info

Publication number
EP2541071B1
EP2541071B1 EP12004137.1A EP12004137A EP2541071B1 EP 2541071 B1 EP2541071 B1 EP 2541071B1 EP 12004137 A EP12004137 A EP 12004137A EP 2541071 B1 EP2541071 B1 EP 2541071B1
Authority
EP
European Patent Office
Prior art keywords
connection
consumer
valve
pressure
hydraulic
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.)
Active
Application number
EP12004137.1A
Other languages
German (de)
English (en)
Other versions
EP2541071A3 (fr
EP2541071A2 (fr
Inventor
Michael Dipl.-Ing. Deeken
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.)
Liebherr Machines Bulle SA
Original Assignee
Liebherr Machines Bulle SA
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
Priority claimed from CH01393/11A external-priority patent/CH705150A1/de
Application filed by Liebherr Machines Bulle SA filed Critical Liebherr Machines Bulle SA
Publication of EP2541071A2 publication Critical patent/EP2541071A2/fr
Publication of EP2541071A3 publication Critical patent/EP2541071A3/fr
Application granted granted Critical
Publication of EP2541071B1 publication Critical patent/EP2541071B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F15B11/006—Hydraulic "Wheatstone bridge" circuits, i.e. with four nodes, P-A-T-B, and on-off or proportional valves in each link
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F15B2211/20576—Systems with pumps with multiple pumps
    • F15B2211/20592—Combinations of pumps for supplying high and low pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/30—Directional control
    • F15B2211/305—Directional control characterised by the type of valves
    • F15B2211/3056—Assemblies of multiple valves
    • F15B2211/30565—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve
    • F15B2211/30575—Assemblies of multiple valves having multiple valves for a single output member, e.g. for creating higher valve function by use of multiple valves like two 2/2-valves replacing a 5/3-valve in a Wheatstone Bridge arrangement (also half bridges)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/40—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
    • F15B2211/41563—Flow control characterised by the connections of the flow control means in the circuit being connected to a pressure source 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
    • F15B2211/45—Control of bleed-off flow, e.g. control of bypass flow 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
    • F15B2211/70—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
    • F15B2211/7053—Double-acting output members

Definitions

  • the present invention relates to a hydraulic system with a valve arrangement for a hydraulic control system for controlling a hydraulic consumer, with a pressure connection for connection to a pressure supply, a tank connection for connection with a return line, and two consumer connections for connection with the connections of the hydraulic consumer.
  • valve arrangements are used as standard in hydraulic control systems in order to control the inlet to and the outlet from a hydraulic consumer.
  • a 4/3 proportional directional control valve is usually used to control the movement of the hydraulic consumer in both directions.
  • a hydraulic system with a valve arrangement with disengaged control edges according to the preamble of claim 1 is from DE 102 96 739 B4 known.
  • the object of the present invention is to further improve such a valve arrangement with broken control edges, in which at least two separate valves are used to control the connection of the two consumer connections with the pressure connection and the tank connection.
  • the present invention shows a valve arrangement for a hydraulic control system for controlling a hydraulic consumer, with a pressure connection for connection to a pressure supply, a tank connection for connection to a return line, and two consumer connections for connection to the connections of the hydraulic consumer.
  • the valve arrangement further comprises a valve for connecting the pressure connection and the tank connection.
  • valve according to the invention for connecting the pressure connection and the tank connection enables an "open center" function which connects the pressure connection and the tank connection as long as there is no volume flow requirement for the hydraulic consumer. This allows a more flexible use of the invention Valve arrangement and improves the control options. In particular, it is possible to connect several valve arrangements in series.
  • the system of resolved control edges also makes it possible to control the individual control edges separately from one another and / or to design or dimension them differently in order to adapt the cross-sections and to minimize the flow losses.
  • valves for connecting the pressure connection and the tank connection are at least partially controlled separately and possibly differently.
  • valves for connecting the pressure connection and the tank connection can be used for the valves for connecting the pressure connection and the tank connection, in particular differently dimensioned valves.
  • valve for connecting the pressure connection and the tank connection is designed as a separate valve.
  • the "open center" function is therefore not integrated into the valves for connecting the two consumer connections with the pressure connection and tank connection, but is implemented separately.
  • a 2/2-way valve can be used for the valve to connect the pressure connection and the tank connection.
  • the present invention is advantageously used to control hydraulic consumers with two directions of movement.
  • the valve arrangement is designed in such a way that it can connect both consumer connections to the pressure connection or the tank connection, depending on the desired direction of movement.
  • the present invention is advantageously used in valve assemblies with disengaged control edges, in which the first consumer connection is connected with the pressure connection a different valve is used than for connecting the second consumer connection with the tank connection and / or with a different valve being used for connecting the second consumer connection with the pressure connection than for connecting the first consumer connection with the tank connection.
  • a different valve is used than for connecting the second consumer connection with the tank connection and / or with a different valve being used for connecting the second consumer connection with the pressure connection than for connecting the first consumer connection with the tank connection.
  • a different valve is used to connect the first consumer port to the pressure port than to connect the second consumer port to the pressure port and / or to connect the first consumer port to the tank port a different valve is used than to connect the second consumer port with the tank connection.
  • valves are used for all connections between the two consumer connections and pressure connection and tank connection, that is to say a total of four valves for connecting the two consumer connections with pressure connection and tank connection.
  • 2/2-way valves can be used for the valves for connecting the consumer connections with the pressure connection and the tank connection.
  • valves can be used to connect the consumer connections with the pressure connection and the tank connection. If a consumer is to be controlled with two directions of movement, two 3/3-way valves are advantageously used for this.
  • the valve arrangement according to the invention advantageously comprises a control which closes the valve for connecting the pressure connection and the tank connection when the connection between one of the consumer connections and the pressure connection is opened. Conversely, the control opens the valve for connecting the pressure connection and the tank connection when all connections between one of the consumer connections and the pressure connection are closed. Furthermore, the control can also take into account the connections between the consumer connections and the tank connection in the same way.
  • valves for connecting the consumer connections to the pressure connection and tank connection and the valve for connecting the pressure connection and tank connection are controlled hydraulically.
  • the valves for connecting the consumer connections to the pressure connection and tank connection and / or the valve for connecting the pressure connection and tank connection can each be controlled via a separate valve assigned to them.
  • a 3/3-way valve can be used for this purpose, for example.
  • the valves for connecting the consumer connections with the pressure connection and tank connection are each controlled via a separate valve assigned to them.
  • the valve for connecting the pressure connection and the tank connection is also controlled via a separate valve assigned to it.
  • valves for connecting the consumer connections to the pressure connection and tank connection and / or the valve for connecting the pressure connection and tank connection are at least partially controlled together.
  • valves for connecting the consumer connections to the pressure connection and the tank connection can at least partially be controlled together will.
  • control can take place via two separate valves, which each control a direction of movement of the hydraulic consumer.
  • valve for connecting the pressure connection and tank connection is controlled together with the valves for connecting the consumer connections with the pressure connection and the tank connection.
  • valve arrangement can be designed in such a way that the control connection of the valve for connecting the pressure connection and tank connection is connected to one or more control lines for controlling the valves for connecting the consumer connections with the pressure connection and tank connection.
  • the control connection of the valve for connecting the pressure connection and the tank connection is advantageously connected to a plurality of control lines for controlling the other valves, and advantageously to all control lines.
  • the connection is advantageously made via one or more check valves. In this way it can be ensured by the hydraulic control that the valve for connecting the pressure connection and the tank connection opens when all the other valves are closed and closes when one of the other valves opens.
  • the present invention comprises a hydraulic system with a hydraulic control system comprising a valve arrangement as described above.
  • the hydraulic system comprises at least one hydraulic pump for providing hydraulic pressure at the pressure connection of the valve arrangement, as well as a return line for connection to the tank connection of the valve arrangement.
  • the hydraulic system according to the invention comprises a consumer whose inlet and outlet are connected to the two consumer connections of the valve arrangement.
  • the valve arrangement according to the invention is advantageously used with a consumer with two directions of movement.
  • the consumer can in particular be a translational or a rotary consumer.
  • the hydraulic consumer can be a hydraulic cylinder or a hydraulic motor.
  • the hydraulic control system can comprise a further valve arrangement which is connected in series with the valve arrangement according to the invention.
  • the valve according to the invention for connecting pressure connection and tank connection enables such a series connection, since in the neutral position of the valve arrangement according to the invention hydraulic pressure flows from the pressure connection to the tank connection and thus on to the further valve arrangement.
  • the further valve arrangement is also a valve arrangement according to the invention with open control edges and a valve for connecting the pressure connection and the tank connection.
  • it can also be a conventional valve.
  • the present invention further comprises an implement having a hydraulic system as described above.
  • it can be a movable work device.
  • the working device according to the invention can be an earth moving device, a handling device and / or a crane.
  • the hydraulic control system according to the invention is advantageously used to control work equipment of the implement.
  • a hydraulic cylinder or a hydraulic motor of the work equipment can be controlled.
  • a hydraulic cylinder for lifting a boom or a hydraulic motor for driving a slewing gear or a winch can be controlled.
  • the present invention further comprises a method of operating a hydraulic system as set out above.
  • the valve for connecting the pressure connection and the tank connection is closed when the connection between one of the consumer connections and the pressure connection is opened.
  • the hydraulic system is advantageously operated in the same way as has already been shown above with regard to the valve arrangement according to the invention.
  • the present invention enables a particularly efficient distribution of the volume flows to a consumer. Dissolved control edges are used for this.
  • an "open center” function is integrated through an additional seat valve. The invention can thus minimize the pressure losses in the consumer returns.
  • seat valves of different sizes can be used for the inlet and outlet of the hydraulic consumer. Simultaneously with the opening of the inlet aperture, the "open center" aperture closes to reduce the volume flow.
  • the inlet and outlet control edges are not designed as a 4/3-way valve, as is customary, but rather as individual control edges in the form of 2/2-way valves. This results in a number of four 2/2-way valves, two each for the two consumer connections A and B, i.e. one valve for the inlet and one valve for the outlet for each of the consumer connections.
  • the "open center” function is implemented via an additional 2/2-way valve, which is closed when the hydraulic consumer requests a volume flow. This enables valve sections to be connected in series.
  • the system of broken control edges makes it possible to use different valves and / or to control inlet and outlet edges or directions of movement of the hydraulic consumer separately from one another. This allows the cross-sections to be adapted and flow losses to be minimized.
  • valve arrangements according to the invention shown serve to control a hydraulic consumer 11.
  • this is a hydraulic cylinder.
  • a hydraulic motor could also be controlled.
  • the hydraulic consumer 11 has two connections which, depending on the direction of movement, form an inlet or outlet. Furthermore, a hydraulic pump 10 is provided, which provides hydraulic pressure for operating the hydraulic consumer 11, as well as a tank 12 to which hydraulic fluid can flow back.
  • the valve arrangement according to the invention now has two consumer connections A and B for connection to the connections of the hydraulic consumer 11, a pressure connection P for connection to the hydraulic pump 10 and a tank connection T for connection to a return line leading to the tank.
  • the individual connections can also be designed in the form of several connections connected in parallel.
  • the valve arrangement according to the invention is a valve arrangement with disengaged control edges so that the two consumer connections A and B and both directions of movement of the consumer are controlled via separate valves and thus not mechanically interconnected control edges.
  • there are four valves 1 to 4 in the exemplary embodiment valve 1 connecting the pressure port P to the first consumer port A, valve 2 connecting the tank port T to the first consumer port A, valve 3 connecting the pressure port P to the second consumer port B and valve 4 the tank port T. connects to the second consumer connection B. 2/2-way valves are used as valves.
  • valves for controlling the two consumer connections could also be an arrangement with only two separate valves. With such an arrangement, either the two consumer connections could then be controlled separately, or the two directions of movement of the hydraulic consumer. For example, two 3/3-way valves could be used for this.
  • valves to control the two consumer connections or directions of movement enables, on the one hand, separate and possibly different control of the valves, and on the other hand, the use of differently dimensioned valves. These two possibilities can be used individually or in combination to adapt to the respective application and thus to reduce losses.
  • valve or valves that connect or connect the first consumer port A to the pressure port P and the tank port T can be designed differently than the valve or valves that connect or connect the second consumer port B to the tank port T and pressure port P . connect.
  • different valve cross-sections can be used.
  • the valve or valves which control a first direction of movement of the hydraulic consumer are designed differently from the valve or valves which control a second direction of movement.
  • valve 5 which connects the pressure connection P to the tank connection T.
  • the valve 5 is designed as a separate valve to the other valves. This provides a further separate control edge via which a direct connection between the pressure connection and the tank connection can be established.
  • An "open center” function can be implemented by the valve 5, which connects the pressure connection and the tank connection to one another when the two consumer connections are separated from the pressure connection and vice versa.
  • a corresponding control is advantageously provided for this.
  • the control is advantageously designed in such a way that the valve 5 closes when one of the valves for connecting the pressure connection to one of the two consumer connections opens in order to throttle the volume flow.
  • valves 1 to 5 are controlled hydraulically.
  • a hydraulic pump 13 is provided for this purpose, which provides the control pressure required for this.
  • control valves SV1 to SV5 can also be integrated into the valves 1 to 5, so that two-stage valves are used in each case.
  • control valves SV1 'and SV2' are used to control valves 1 to 5.
  • the control valve SV1 ' controls the valves 1 and 4, that is, the connection of the first consumer connection A with the pressure connection and the connection of the second consumer connection B with the tank connection.
  • the second control valve SV2 ' controls valves 2 and 3, that is, the connection of the second consumer connection to the pressure connection and the connection of the first consumer connection to the tank connection.
  • the first control valve SV1 'thus controls the first direction of movement, in which connection A of the consumer is pressurized while hydraulic fluid flows off from the second connection B.
  • the control valve SV2 ' controls the opposite direction.
  • control valves SV1 'and SV2' for controlling the valves 1 to 4 are now also used for controlling the valve 5 for connecting the pressure connection and the tank connection.
  • the control connection of the valve 5 is connected via check valves 16 to the control lines for controlling the valves 1 to 4.
  • the check valves 16 ensure that the highest control pressure is applied to the control connection of the valve 5.
  • the valve 5 is thereby automatically closed when one of the valves 1 to 4 is opened.
  • a corresponding control of the valve 5 for connecting the pressure connection and tank connection would also be in the case of the in Figure 1
  • the embodiment shown is conceivable in that the control valve SV5 is omitted and the control connection of the valve 5 is connected to the control lines for the valves 1 to 4 via check valves.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valve Housings (AREA)

Claims (10)

  1. Système hydraulique avec une pompe hydraulique (10) et un consommateur (11) hydraulique ainsi qu'avec un système de commande hydraulique servant à piloter le consommateur (11) hydraulique, comprenant par ailleurs un ensemble de soupapes avec un raccord de pression (P) destiné à être relié à la pompe hydraulique (10), un raccord de réservoir (T) destiné à être relié à un conduit de retour, et deux raccords de consommateur (A, B) destinés à être reliés aux raccords du consommateur hydraulique, dans lequel au moins deux soupapes (1, 2, 3, 4) séparées sont utilisées pour piloter la liaison des deux raccords de consommateur (A, B) au raccord de pression (P) et au raccord de réservoir (T), dans lequel l'ensemble de soupapes comprend une soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T), et
    dans lequel les soupapes (1, 2, 3, 4) servant à relier les raccords de consommateur (A, B) au raccord de pression (P) et au raccord de réservoir (T) et la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T) sont pilotées de manière hydraulique,
    caractérisé en ce
    que les soupapes (1, 2, 3, 4) servant à relier les raccords de consommateur (A, B) au raccord de pression (P) et au raccord de réservoir (T) et la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T) sont pilotées respectivement par l'intermédiaire d'une soupape (SV1, SV2, SV3, SV4, SV5) séparée qui leur est associée, dans lequel est prévue à cet effet une autre pompe hydraulique (13), laquelle fournit la pression de commande requise à cet effet, ou que les soupapes (1, 2, 3, 4) servant à relier les raccords de consommateur (A, B) au raccord de pression (P) et au raccord de réservoir (T) et la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T) sont pilotées au moins en partie conjointement, dans lequel le pilotage est effectué par l'intermédiaire de deux soupapes (SV1', SV2') séparées, lesquelles pilotent respectivement une direction de déplacement du consommateur (11) hydraulique,
    dans lequel est prévue à cet effet une autre pompe hydraulique (13), laquelle fournit la pression de commande requise à cet effet.
  2. Système hydraulique selon la revendication 1, dans lequel la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T) est réalisée en tant que soupape séparée.
  3. Système hydraulique selon la revendication 1 ou 2, dans lequel est utilisée pour relier le premier raccord de consommateur (A) au raccord de pression (P) une soupape autre que celle servant à relier le deuxième raccord de consommateur au raccord de réservoir (T) et/ou dans lequel est utilisée pour relier le deuxième raccord de consommateur (B) au raccord de pression (P) une soupape autre que celle servant à relier le premier raccord de consommateur (A) au raccord de réservoir (T) et/ou dans lequel est utilisée pour relier le premier raccord de consommateur (A) au raccord de pression (P) une soupape autre que celle servant à relier le deuxième raccord de consommateur (B) au raccord de pression (P) et/ou est utilisée pour relier le premier raccord de consommateur (A) au raccord de réservoir (R) une soupape autre que celle servant à relier le deuxième raccord de consommateur (B) au raccord de réservoir (T).
  4. Système hydraulique selon l'une quelconque des revendications précédentes, dans lequel sont utilisées respectivement des soupapes de distribution à 2 voies pour les soupapes (1, 2, 3, 4) servant à relier les raccords de consommateur (A, B) au raccord de pression (P) et au raccord de réservoir (T) et/ou pour la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T).
  5. Système hydraulique selon l'une quelconque des revendications précédentes avec une commande, laquelle ferme la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T) quand la liaison entre un des raccords de consommateur (A, B) et le raccord de pression (P) est ouverte.
  6. Système hydraulique selon l'une quelconque des revendications précédentes, dans lequel le raccord de commande de la soupape (5) servant à relier le raccord de pression (P) et le raccord de réservoir (T) est en liaison avec une ou plusieurs lignes de commande servant à piloter les soupapes (1, 2, 3, 4) servant à relier les raccords de consommateur (A, B) au raccord de pression (P) et au raccord de réservoir (T), avantageusement par l'intermédiaire d'une ou de plusieurs soupapes anti-retour (16).
  7. Système hydraulique selon l'une quelconque des revendications précédentes, dans lequel l'ensemble de soupapes est branché en série avec un ensemble de soupapes supplémentaire.
  8. Appareil de travail avec un système hydraulique selon l'une quelconque des revendications précédentes, dans lequel il s'agit avantageusement d'un appareil de travail pouvant être déplacé.
  9. Appareil de travail selon la revendication 8, dans lequel le système de commande hydraulique est utilisé avantageusement pour piloter un équipement de travail de l'appareil de travail, par ailleurs avantageusement pour piloter un cylindre hydraulique ou un moteur hydraulique de l'équipement de travail.
  10. Procédé servant à faire fonctionner un système hydraulique selon l'une quelconque des revendications 1 à 7, dans lequel la soupape servant à relier le raccord de pression (P) et le raccord de réservoir (T) est fermée quand la liaison entre un des raccords de consommateur (A, B) et le raccord de pression (P) est ouverte.
EP12004137.1A 2011-06-30 2012-05-29 Agencement de soupapes pour un système de commande hydraulique Active EP2541071B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011106081 2011-06-30
CH01393/11A CH705150A1 (de) 2011-06-30 2011-08-25 Ventilanordnung für ein hydraulisches Steuerungssystem.

Publications (3)

Publication Number Publication Date
EP2541071A2 EP2541071A2 (fr) 2013-01-02
EP2541071A3 EP2541071A3 (fr) 2016-12-07
EP2541071B1 true EP2541071B1 (fr) 2020-11-11

Family

ID=46245447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12004137.1A Active EP2541071B1 (fr) 2011-06-30 2012-05-29 Agencement de soupapes pour un système de commande hydraulique

Country Status (1)

Country Link
EP (1) EP2541071B1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987036B (zh) * 2015-02-05 2018-01-09 徐工集团工程机械股份有限公司 支腿控制组合阀、液压系统及起重机
US11867169B2 (en) * 2021-11-08 2024-01-09 Pdc Machines, Inc. High-throughput diaphragm compressor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19500749A1 (de) * 1995-01-12 1996-07-18 Danfoss As Drei- oder Mehr-Wege-Ventil
DE10296739B4 (de) * 2001-05-02 2008-05-08 Husco International Inc., Waukesha Hydrauliksystem und Verfahren zum Betreiben eines Hydrauliksystems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411536A (en) * 1966-07-06 1968-11-19 Koehring Co Pilot operated control valve mechanism
US4723576A (en) * 1985-06-24 1988-02-09 Fluidcircuit Technologies, Inc. Fluid power control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19500749A1 (de) * 1995-01-12 1996-07-18 Danfoss As Drei- oder Mehr-Wege-Ventil
DE10296739B4 (de) * 2001-05-02 2008-05-08 Husco International Inc., Waukesha Hydrauliksystem und Verfahren zum Betreiben eines Hydrauliksystems

Also Published As

Publication number Publication date
EP2541071A3 (fr) 2016-12-07
EP2541071A2 (fr) 2013-01-02

Similar Documents

Publication Publication Date Title
EP1767824B1 (fr) Système de commande hydraulique pour une boîte de vitesses à double embrayage automatisée
EP1767825B1 (fr) Système de commande hydraulique pour une boîte de vitesses à double embrayage automatisée
EP2628959B1 (fr) Servosoupape
DE102004052602B4 (de) Ventilanordnung
EP3058236B1 (fr) Dispositif de commande
DE4204123A1 (de) Hinterradlenkvorrichtung
DE102010034187A1 (de) Steuereinrichtung für erstes und zweites Arbeitsgerät
DE102010054108A1 (de) Ventilanordnung zur Steuerung eines Zusatz-Lenksystems bei mehrachsigen Fahrzeugen, insbesondere Mobilkranen
EP2672124A2 (fr) Système hydraulique et vanne de limitation de pression
EP2541071B1 (fr) Agencement de soupapes pour un système de commande hydraulique
DE102015212101A1 (de) Hydrauliksteuerung für einen Aktuator in einem Fahrzeuggetriebe
DE102016123503B4 (de) Hydraulikventilverband
DE102016205582A1 (de) Hydraulische Antriebsvorrichtung mit Regenerationsbetrieb
DE102010001069A1 (de) Vorrichtung zur Ansteuerung von hydraulischen Schaltzylindern
EP3012463A1 (fr) Agregat hydraulique
DE102017002784A1 (de) Steuereinheit für eine Steuerungsvorrichtung für ein Schwerlast-Fahrzeug, insbesondere für einen Schwanenhals, eine Hubanordnung oder eine Lenkanordnung eines Schwerlast-Fahrzeugs, sowie eine derartige Steuerungsvorrichtung
DE112008003999T5 (de) Fluidbetriebenes Betätigungssystem
DE102013002814A1 (de) Hydrauliksystem für eine Arbeitsvorrichtung
DE102017206581A1 (de) Ventilanordnung für Stiel-Zylinder mit zwei Betriebszuständen
EP1574720B1 (fr) Commande électro-hydraulique et méthode de sa déactivation
DE102020107544A1 (de) Hydraulikanordnung
DE102017102307B3 (de) Kraftfahrzeug mit offener Fahrgastzelle
CH705150A1 (de) Ventilanordnung für ein hydraulisches Steuerungssystem.
DE202017001550U1 (de) Steuereinheit für eine Steuerungsvorrichtung für ein Schwerlast-Fahrzeug, insbesondere für einen Schwanenhals, eine Hubanordnung oder eine Lenkanordnung eines Schwerlast-Fahrzeugs, sowie eine derartige Steuerungsvorrichtung
DE102009058404A1 (de) Schaltungsanordnung zur Ansteuerung eines doppelt wirkenden Verbrauchers

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: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: F15B 11/00 20060101AFI20161102BHEP

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20170607

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20181115

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20200515

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LIEBHERR-MACHINES BULLE SA

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: LIEBHERR MACHINES BULLE SA

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: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1333745

Country of ref document: AT

Kind code of ref document: T

Effective date: 20201115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012016466

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20201111

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210212

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210311

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210211

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

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210311

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210211

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

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

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

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

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012016466

Country of ref document: DE

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

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

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: 20210812

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

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

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20210529

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

Ref country code: LI

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

Effective date: 20210531

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

Ref country code: LU

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

Effective date: 20210529

Ref country code: CH

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

Effective date: 20210531

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20210531

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

Ref country code: IE

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

Effective date: 20210529

Ref country code: GB

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

Effective date: 20210529

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20210311

Ref country code: FR

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

Effective date: 20210531

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1333745

Country of ref document: AT

Kind code of ref document: T

Effective date: 20210529

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

Ref country code: BE

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

Effective date: 20210531

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

Ref country code: AT

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

Effective date: 20210529

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

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20120529

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111

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

Ref country code: DE

Payment date: 20230525

Year of fee payment: 12

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

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20201111