EP2128446B1 - Unité hydraulique - Google Patents

Unité hydraulique Download PDF

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Publication number
EP2128446B1
EP2128446B1 EP09006984.0A EP09006984A EP2128446B1 EP 2128446 B1 EP2128446 B1 EP 2128446B1 EP 09006984 A EP09006984 A EP 09006984A EP 2128446 B1 EP2128446 B1 EP 2128446B1
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EP
European Patent Office
Prior art keywords
hydraulic
pump
motor
unit according
housing
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.)
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Application number
EP09006984.0A
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German (de)
English (en)
Other versions
EP2128446A2 (fr
EP2128446A3 (fr
Inventor
Kai Böhner
Christian Dipl.-Ing. Böhner
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.)
BOEHNER-EH GmbH
Original Assignee
Bohner-Eh GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/14—Lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings

Definitions

  • Hydraulic units are known from the prior art.
  • WO 2006/056256 A2 teaches a hydraulic power unit, which uses an electric motor and a pump operated via this for generating pressure to a pressurized hydraulic fluid at an output.
  • the hydraulic fluid drawn in by the pump is provided with a storage space with a variable compensation volume, in which the hydraulic fluid is stored gas-free.
  • the hydraulic pump and the hydraulic block form a functional unit
  • the hydraulic block is provided with a plurality of hydraulic connection elements and a flange arranged in the pump housing delivery chamber is covered by the hydraulic block on the opposite side of the motor housing.
  • the arrangement of the hydraulic pump immediately adjacent to the hydraulic block allows both a manufacturing technology easy to implement, as well as reliably operable in operation functional unit.
  • the integration of the delivery chamber of the pump final "lid" to the hydraulic block the dimensioning of the entire hydraulic unit is reduced. Parts of the pump components are assigned to the hydraulic unit. Both in the pump housing, as well as in the hydraulic block valves can be integrated.
  • the hydraulic connection elements serve as an interface of the hydraulic unit to the connecting lines of the hydraulic actuators to be driven,
  • the hydraulic accumulator can be part of the uniform, manageable rigid module, thus reducing the dimensioning of the entire unit.
  • the hydraulic fluid flowing through all the elements of the module in the longitudinal direction is preferably guided in one circulation.
  • This can be the Hydraulic fluid also be assigned a cooling function in addition to the power transmission function.
  • hydraulic elements such as pressure relief valves, suction valves or pilot operated check valves may be integrally employed and assisted by the shape and shape of the channels in the pump housing (e.g., channeling and / or concentration of hydraulic fluid in the area of the valves used).
  • the immediate vicinity of the hydraulic block to the pump achieves design advantages, it can be ensured directly from the delivery chamber of the pump via shortest connections to the hydraulic connection elements and optionally between these intermediate overload valves / pressure relief valves a safe, reliable and energy-saving operation of the hydraulic unit ,
  • circumferential elements of the hydraulic pump protrude into the region of the hydraulic block via the flange surface arranged between the pump housing and the hydraulic block in the delivery chamber.
  • shaft elements (pinion shaft) of the pump can be mounted at least in regions in a corresponding recess of the hydraulic block.
  • the dimensioning of the entire hydraulic unit is further reduced.
  • the rotating elements of the hydraulic pump are guided in the region of the hydraulic block.
  • Such a guide can positively affect both the storage and optionally other functions of the pump shaft to elements of the hydraulic block, for example, the pump shaft is formed as a hollow shaft, which in a continuing, preferably hydraulic fluid leading channel of the hydraulic block continues.
  • the peripheral elements arranged in the pump housing, cooperating therewith, valve elements arranged in the pump housing and the valve elements of the hydraulic block form a coherent integrated hydraulic functional unit.
  • the surface of the hydraulic block facing the pump does not only have a function concluding the delivery chamber, but also has further recesses influencing the function of the pump and / or the hydraulic fluid management, control and / or regulation.
  • the fact that there is a connection to the pump directly from the valve elements of the hydraulic block both a structurally simple, and low-maintenance and thus a reliable hydraulic unit is provided, for example, the sealed areas can be reduced to a minimum (only static seals).
  • the pump is designed such that it is operable in four-quadrant mode and thereby allows a promotion of the hydraulic fluid in two directions (forward / backward).
  • This also makes it possible, for example, not only to use the hydraulic unit as a medium providing hydraulic pressure, but also to tap from this electrical energy when the hydraulic unit is acted upon by a hydraulic pressure (energy return - 2, and 4 th quadrant).
  • drive modes for the motor are preferably called controlled or unregulated electrical asynchronous or synchronous motors.
  • drive modes for the motor are preferably called controlled or unregulated electrical asynchronous or synchronous motors.
  • under oil designs are preferred which ensure intensive cooling, build compact and achieve a low mass moment of inertia.
  • a hydraulic pump can be designed as a radial piston pump and arranged both on the pump and preferably on the storage side of the engine. Since this has a favorable efficiency and reaches high load pressures at a smaller flow rate, it is suitable for the above-described Forming and / or shear phases. Consequently, the radial piston pump can serve primarily as a second higher pressure level. In order to be able to use the full drive power for the high pressures, the delivery of the low-pressure pump is automatically switched to pressureless circulation.
  • a hydraulic return flow channel is formed in the central region of the at least one hydraulic pump, which connects the outlet of the pressure limiting valve with the hydraulic reservoir passing through the engine and hydraulic accumulator.
  • a hydraulic return flow channel is preferably operatively connected directly or indirectly to the pressure limiting valve and / or hydraulic element.
  • the shaft of the motor and / or the shaft of the pump as Hollow shaft formed and forms a part of the return channel (circulation channel) for the hydraulic fluid to return them to the hydraulic accumulator.
  • both the dimensioning of the entire hydraulic unit can be reduced, as well as a cooling function are taken over by the flowing back through the return flow in the hydraulic fluid, as this when flowing through the motor and / or pump hollow shaft to just this place, but especially at the stator and rotor of the engine can dissipate heat energy.
  • the return flow channel formed by the shaft of the engine immediately continues with the volume of the hydraulic accumulator.
  • the opposing flanges of the pump housing are aligned parallel to each other.
  • these flanges are aligned parallel to each other and / or have a coordinated coupling surface, it is possible, in the manner of a modular system, one, two or more pump housing together and thus designed depending on the application, the performance of the hydraulic unit targeted.
  • a coupling element such as a cross slide.
  • a coupling element may be formed depending on the combination of different motors and different pumps as a specific combination part, so that at the interfaces of the engine and the pump relatively simple held, the respective component conditions corresponding configurations of the interfaces can be implemented.
  • a first coupling element for connecting the two elements can be used and in a second combination case in the combination of a second motor with again the first pump, a second coupling element can be used.
  • connecting flange passing through hydraulic fluid carrying elements substantially symmetrical to the motor axis.
  • hydraulic block, the pump housing, the motor housing and the storage housing are formed substantially rotationally symmetrical and are arranged coaxially or axially parallel to each other.
  • the pump housing and / or the motor housing in each case with at least one region beyond the outer diameter of the pump housing or the motor housing final pump flange respectively motor flange area is provided.
  • the pump flange region and the motor flange region advantageously have at least one mounting flange arranged in a coplanar plane, on which the essentially cylindrical hydraulic unit can be reliably and statically mounted on a flat surface.
  • the hydraulic accumulator used is preferably a bladder accumulator or a piston accumulator which has an air or gas bias directed against the hydraulic reservoir.
  • the bladder accumulator or piston accumulator can also be preloaded with a different preloading element (for example a spring).
  • a bladder accumulator having at least one air or gas bias directed against the hydraulic reservoir has the advantage that by controlling and regulating the air or gas bias (e.g., from a pneumatic network), the operation of the hydraulic unit can be selectively influenced.
  • a terminal adapter with hydraulic connection elements can be attached to the hydraulic block.
  • a cover housing element can be attached to the hydraulic block, which covers at least one valve element.
  • various modular attachment to the hydraulic block connection adapter can be arranged on the hydraulic block.
  • the hydraulic connection elements of the hydraulic block are then formed by the hydraulic connection elements of the connection adapter. Actuators can be directly connected with suitable flanges, so that the hydraulic unit forms a unit with the actuator.
  • the hydraulic unit is designed in such a way that no outwardly acting seals are arranged on moving parts. This is achieved inter alia by the encapsulated, guided in the manner of a circulation hydraulic fluid.
  • a further advantageous measure is to provide at least one suction valve for volume compensation for thermal processes and possibly leakage in the hydraulic unit.
  • the hydraulic actuators perform linear and / or rotary movements.
  • the unit for decentralized drives can be provided and position independent, stationary and in particular mobile operation with high accelerations (eg mounting on a robot).
  • hydraulic unit 1 is (not shown) for driving a coupled hydraulic actuator driven by a arranged in a motor housing 2 electric motor 3.
  • a storage housing 4 is flanged with a hydraulic accumulator 5 arranged therein.
  • a hydraulic accumulator 5 is arranged in a pump housing 6 hydraulic pump 7 and on the pump housing 5, a hydraulic block 8 is attached.
  • hydraulic connection elements 9 interfaces
  • the hydraulic reservoir is formed, in particular, by the volume area penetrated by the hydraulic fluid, wherein the largest hydraulic reservoir volume can be found in the region of the hydraulic accumulator 5.
  • the motor 3 has a hollow shaft 14, which is used as reflux channel 12 for the hydraulic fluid to the hydraulic accumulator 5.
  • the hollow shaft 14 it is advantageous, as shown, to connect coaxially with the Hydraulik Wegflußkanal 12 (hollow shaft 15) of the hydraulic pump 7.
  • the hydraulic return passage 12 with its hollow shafts 14, 15 is directly connected to the volume of the hydraulic accumulator 5.
  • the hydraulic accumulator 5 comprises a bladder accumulator, which at its end remote from the motor 3 end 17 with a can be operated against the hydraulic reservoir directed air or gas bias and / or spring element bias. Furthermore, in particular from the sectional view ( Fig. 2 ) can be seen that on the moving parts (hollow shafts 14, 15 and bearing elements of the motor 3 and the hydraulic accumulator 5) no outwardly acting seals are arranged.
  • the pump housing 6 is wholly or partially provided with hydraulic elements (valves, channels). Because in Fig. 2 In some cases the (hidden) elements lying behind the cut surfaces are shown visually (dot-dash line S), the connecting channels 18 arranged in the region of the connection surface of the hydraulic block 8 and the hydraulic pump 7 as well as parts of the delivery chambers 10 of the hydraulic pump 7 are visible. The connecting channels 18 and parts of the delivery chamber 10 are thus incorporated as hydraulic elements in the pump housing 6.
  • the hydraulic block 8 is shown cut, it is easy to see how the pressure relief valve 11 is disposed within the hydraulic block 8 and how the outgoing from the pump connecting channels 18th and the central hydraulic fluid return passage 12 leads from the hydraulic block 8 to the hollow shafts 14, 15.
  • 8 additional attachments 21, 22 can be seen on the hydraulic block.
  • the hydraulic block 8 is viewed from the side view in cross-section T-shaped.
  • a cover housing element 21 can be attached to the hydraulic block 8 in such a way that it at least partially covers the hydraulic block 8 as well as optionally valves 11 connected to the hydraulic block 8 and projecting beyond its contour.
  • the hydraulic connection elements 9 associated with the hydraulic block 8 are arranged in the illustrated embodiment on the connection adapter 22 and connected by means of channels to the hydraulic block 8.
  • connection adapter 22 serves as an adapter to the different connection options due to different connection line connections of the actuators used in each case (line diameter, terminal locking mechanism).
  • connection line connections of the actuators used in each case line diameter, terminal locking mechanism.
  • Abdeckgekoruseelement 21 and / or the terminal adapter 22 it is possible to keep the hydraulic block 8 manufacturing technology simple and to run it as a series part.
  • the application-specific interfaces can be assigned to the modular adapters 22 which can be attached to the hydraulic block 8.
  • the second radial piston pump 27 As the second higher pressure level, it is set with the first hydraulic pump 7 in parallel.
  • the hydraulic pumps 7, 27 are set in operative connection, that when exceeding the low pressure, the promotion of the low-pressure pump 7 is automatically pressureless circulation, so that the drive power of the engine. 3 concentrated on the high-pressure pump 27.
  • FIG. 7 represents the basic design for the operation of a co-axial cylinder.
  • actuators with one-sided piston rod (reference numeral 25 in Fig. 6 ) have different Flow and return volumes.
  • the speeds for such cylinders are also the same after this circuit, but during the flow, the missing volume is sucked in via a check valve in the function as Nachsaugventil 31 and the excess volume flows through a pressure relief valve 11 during the return.
  • actuators are shown with one-sided piston rod and different flow and return speed.
  • the excess oil flows through a pressure-controlled 2-way valve and at FIG. 9 via a pilot operated check valve without pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (15)

  1. Unité hydraulique (1) pour fournir un liquide hydraulique sous pression en vue de l'entraînement d'un actionneur hydraulique accouplé, comprenant un moteur (3) disposé dans un boîtier de moteur (2), un accumulateur hydraulique (5) disposé dans un boîtier d'accumulateur (4), une pompe hydraulique (7) disposée dans un boîtier de pompe (6) et un bloc hydraulique (8), au moins le boîtier de moteur (2), le boîtier de pompe (6) et le bloc hydraulique (8) formant un module rigide (30) pouvant être manipulé d'une seule pièce et le liquide hydraulique circulant dans le module (30) traversant tous les éléments du module (30) en partie dans la direction longitudinale,
    la pompe hydraulique (7) et le bloc hydraulique (8) formant une unité fonctionnelle et le bloc hydraulique (8) étant pourvu d'une pluralité d'éléments de raccordement hydrauliques (9), caractérisée en ce que le bloc hydraulique couvre par une bride une chambre de refoulement (10) disposée dans le boîtier de pompe (6) du côté opposé au boîtier de moteur (2).
  2. Unité hydraulique selon la revendication 1,
    caractérisée en ce que
    l'accumulateur hydraulique (5) fait partie du module rigide (30) pouvant être manipulé d'une seule pièce.
  3. Unité hydraulique selon la revendication 1 ou 2,
    caractérisée en ce que
    le liquide hydraulique circulant à travers tous les éléments du module (30) dans la direction longitudinale est conduit en circulation.
  4. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la pompe hydraulique (7) est une pompe (7) pouvant être entraînée dans un mode à quatre quadrants, qui permet un refoulement de liquide hydraulique dans deux directions, à savoir la direction vers l'avant et la direction vers l'arrière.
  5. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'une pompe hydraulique supplémentaire (27) est disposée entre le boîtier de pompe (6) de la (première) pompe hydraulique (7) et le moteur (3) entraînant la pompe hydraulique (7), laquelle peut également être entraînée par le biais du moteur (3).
  6. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'une pompe hydraulique supplémentaire est disposée entre le boîtier de pompe (6) de la (première) pompe hydraulique (7) et le bloc hydraulique (8), laquelle peut également être entraînée par le biais du moteur (3).
  7. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'une pompe hydraulique supplémentaire (27) est disposée entre le moteur (3) et l'accumulateur hydraulique (5), laquelle peut également être entraînée par le biais du moteur (3) entraînant la première pompe hydraulique (7).
  8. Unité hydraulique selon l'une quelconque des revendications 5 à 7,
    caractérisée en ce que
    la première pompe hydraulique (7) et la pompe hydraulique supplémentaire (27) peuvent fonctionner en série pour obtenir des pressions élevées.
  9. Unité hydraulique selon l'une quelconque des revendications 5 à 8,
    caractérisée en ce que
    les pompes hydrauliques (7, 27) sont en liaison fonctionnelle de telle sorte que lors d'un dépassement de la basse pression, le refoulement de la pompe à basse pression (7) s'ajuste automatiquement à une circulation.
  10. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    dans la région centrale (Z) de l'au moins une pompe hydraulique (7) est formé un canal de reflux hydraulique (12) qui relie la sortie d'au moins une soupape de limitation de la pression (11) et/ou d'un clapet antiretour déverrouillable à un réservoir hydraulique traversant le moteur (3).
  11. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'arbre du moteur (3) est réalisé sous forme d'arbre creux (14) et forme un canal de reflux (12) pour le liquide hydraulique vers l'accumulateur hydraulique (5).
  12. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    l'accumulateur hydraulique (5) est un accumulateur à vessie ou un accumulateur à piston qui présente une précontrainte d'air ou de gaz et/ou une précontrainte par un élément de ressort, orientée vers le réservoir hydraulique.
  13. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    le boîtier du bloc hydraulique (8) se compose d'une bride de soupape centrale (21) et d'au moins une bride de raccordement (20) appliquée contre celle-ci.
  14. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'aucun joint d'étanchéité agissant vers l'extérieur n'est disposé sur les pièces mobiles.
  15. Unité hydraulique selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'une alimentation et un retour d'un actionneur hydraulique peuvent être réalisés par inversion du sens de rotation de la pompe.
EP09006984.0A 2008-05-26 2009-05-26 Unité hydraulique Active EP2128446B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008025054A DE102008025054B4 (de) 2008-05-26 2008-05-26 Hydraulikeinheit

Publications (3)

Publication Number Publication Date
EP2128446A2 EP2128446A2 (fr) 2009-12-02
EP2128446A3 EP2128446A3 (fr) 2014-05-21
EP2128446B1 true EP2128446B1 (fr) 2017-04-26

Family

ID=40903248

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09006984.0A Active EP2128446B1 (fr) 2008-05-26 2009-05-26 Unité hydraulique

Country Status (2)

Country Link
EP (1) EP2128446B1 (fr)
DE (1) DE102008025054B4 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
DE102021119466A1 (de) 2021-07-27 2023-02-02 Eckerle Technologies GmbH Hydraulikeinheit

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Publication number Priority date Publication date Assignee Title
DE102011080377B4 (de) * 2011-08-03 2015-10-22 Pressure Wave Systems Gmbh Kühlvorrichtung mit Kompressorvorrichtung sowie Gifford-McMahon-Kühler oder Pulsrohrkühler
DE102012211138B4 (de) * 2012-06-28 2017-05-18 Robert Bosch Gmbh Brennkraftmaschine
DE102013111098B3 (de) 2013-10-08 2014-11-13 4-QM hydraulics GmbH Strömungsmaschine
DE102014103959A1 (de) 2014-03-21 2015-09-24 Eckerle Industrie-Elektronik Gmbh Motor-Pumpen-Einheit
DE102014012694B3 (de) * 2014-09-01 2016-02-25 Böhner-EH GmbH Hydraulische Vorrichtung
DE102015006954A1 (de) * 2015-06-05 2016-12-08 Sca Schucker Gmbh & Co. Kg Vorrichtung zum Fördern von viskosem Material
DE102017125749A1 (de) 2017-11-03 2019-05-09 Böllhoff Verbindungstechnik GmbH Elektrohydraulisches Linearstellglied
DE102021211345A1 (de) 2021-10-07 2023-04-13 Robert Bosch Gesellschaft mit beschränkter Haftung Hydraulische Kompaktachse, die mehrere rohrartige Bauteile umfasst

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DE2748897A1 (de) * 1977-11-02 1979-05-03 Suspa Federungstech Elektromotorisches pumpenaggregat
DE4120665A1 (de) * 1991-06-22 1992-12-24 Teves Gmbh Alfred Elektromotorisch angetriebene hydraulikpumpe
JPH09177667A (ja) * 1995-12-26 1997-07-11 Tokimec Inc 液圧閉回路用液圧パッケージ
JP3915241B2 (ja) * 1998-04-22 2007-05-16 株式会社デンソー 複数の回転式ポンプを備えたポンプ装置及びその組付け方法
DE10028957C2 (de) * 2000-06-16 2002-07-11 Lukas Hydraulik Gmbh & Co Kg Tragbare Hydraulikpumpeneinheit
JP2002364535A (ja) * 2001-06-08 2002-12-18 Toyota Industries Corp 回転装置
DE112005002804B4 (de) 2004-11-19 2014-07-31 Richard Bergner Verbindungstechnik Gmbh & Co. Kg Hydraulikaggregat sowie Verfahren zur Bereitstellung einer unter Druck stehenden Hydraulikflüssigkeit

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021119466A1 (de) 2021-07-27 2023-02-02 Eckerle Technologies GmbH Hydraulikeinheit
WO2023006454A1 (fr) 2021-07-27 2023-02-02 Hydraulik Nord Technologies GmbH Unité hydraulique
DE102021119466B4 (de) 2021-07-27 2024-04-11 Eckerle Technologies GmbH Hydraulikeinheit

Also Published As

Publication number Publication date
DE102008025054A1 (de) 2009-12-03
EP2128446A2 (fr) 2009-12-02
EP2128446A3 (fr) 2014-05-21
DE102008025054B4 (de) 2011-04-28

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