EP0701065A2 - Cylindre à pression pour hydraulique à haute pression - Google Patents

Cylindre à pression pour hydraulique à haute pression Download PDF

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Publication number
EP0701065A2
EP0701065A2 EP95112898A EP95112898A EP0701065A2 EP 0701065 A2 EP0701065 A2 EP 0701065A2 EP 95112898 A EP95112898 A EP 95112898A EP 95112898 A EP95112898 A EP 95112898A EP 0701065 A2 EP0701065 A2 EP 0701065A2
Authority
EP
European Patent Office
Prior art keywords
proviso
use according
pressure cylinder
end components
tube
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
Application number
EP95112898A
Other languages
German (de)
English (en)
Other versions
EP0701065A3 (fr
EP0701065B1 (fr
Inventor
Werner Prof. Dr. Ing. Hufenbach
Carsten H. Dr. Ing. Müller
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.)
Innotec Consult GmbH
Lingk and Sturzebecher GmbH
Original Assignee
Innotec Consult GmbH
Lingk and Sturzebecher GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Innotec Consult GmbH, Lingk and Sturzebecher GmbH filed Critical Innotec Consult GmbH
Publication of EP0701065A2 publication Critical patent/EP0701065A2/fr
Publication of EP0701065A3 publication Critical patent/EP0701065A3/fr
Application granted granted Critical
Publication of EP0701065B1 publication Critical patent/EP0701065B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1433—End caps
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1428—Cylinders
    • 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
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages
    • 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
    • F15B2215/00—Fluid-actuated devices for displacing a member from one position to another
    • F15B2215/30—Constructional details thereof
    • F15B2215/305—Constructional details thereof characterised by the use of special materials

Definitions

  • the invention relates to an actuator of the high-pressure hydraulic system, which has at least one pressure cylinder in which at least one metallic actuating piston with a piston rod is guided.
  • the pressure cylinder is generally provided with end components which are pushed into the pressure cylinder, held by tie rods and sealed against the pressure cylinder.
  • one of the end components is a closed component and the other has a bore in which the piston rod is guided in a sealed manner.
  • the piston can also have a piston rod on both sides, which are guided in both end components.
  • several pistons can also be provided in the pressure cylinder. It can be in the actuator z. B. act as a single or double acting actuator.
  • the piston of such an actuator generally has molded-on metallic piston rings or polymeric sliding bands which effect the guidance.
  • a soft seal can be arranged between the piston rings.
  • high pressure denotes a hydrostatic pressure of over 100 bar, for. B. from 400 to 500 bar.
  • the pressure cylinder is a component made of steel, which has a wall thickness corresponding to the pressure of the high-pressure medium. This makes the actuator a heavy weight unit.
  • the invention is based on the technical problem of creating an actuating cylinder of the design described at the outset and of the purpose described at the outset, which is much lighter with the same power and the same pressure as the high-pressure hydraulics and can therefore be used in particular in aircraft, in ships and other vehicles without that a disturbing increase in weight would have to be accepted.
  • the subject of the invention is the use of a composite unit consisting of a metallic liner in the form of a circular cylindrical inner tube and a fiber-reinforced plastic tube placed thereon as a pressure cylinder of an actuator of the high-pressure hydraulics, which has at least one such pressure cylinder, into which a metallic actuating piston with a piston rod works in the inner tube, with the proviso that the pressure cylinder has metallic end components which are fitted with a cylindrical fitting into the metallic inner liner of the pressure cylinder and are connected to it in a sealed manner, and project with collar formations above the pressure cylinder, at least one end component having a bore and the piston rod being guided therein , with the proviso that the supply and discharge of the high pressure medium takes place via channels in the end components and with the proviso that the two end components are connected by tie rods, which are held in the collar training.
  • Actuators that have a pressure cylinder made of a metallic liner and a casing made of fiber-proven plastic are known (WO 93/23675).
  • the metallic liner and the casing are not designed as circular cylindrical tubes. The manufacture is therefore complex.
  • Actuators are also known which have a pressure cylinder made of an inner tube and an outer tube (WO 91/11319), both of which consist of fiber-proven plastic. These actuators are not very suitable for high pressure hydraulics.
  • the pressure cylinder consists of a thin-walled inner tube and a fiber-reinforced plastic tube can exist if the requirements described in claim 1 are realized and if the connection of the pressure cylinder to the end components and the adjustment of the tie rods stabilizes the pressure cylinder against deformations caused by high pressure medium.
  • the high-pressure medium in the outer tube which is connected to the end components, would easily produce tensile forces running in the circumferential direction, the high-pressure medium increasing the diameter of the outer tube. This would result in an impairment of the tightness between the piston and the inner tube.
  • this disruptive deformation can be prevented if a fiber composite outer tube with a high modulus of elasticity is used in the circumferential direction in the manner described.
  • the outer jacket is under slight tension when the high-pressure medium is not present.
  • the pretension can also be set up without a force-locking connection between the end components and the inner jacket in such a way that disruptive deformations of the pressure cylinder do not occur under the pressure of the high-pressure medium.
  • a composite assembly consisting of a metallic liner in the form of a circular cylindrical inner tube and a plastic-fiber-reinforced plastic tube placed thereon designates an aggregate of these two components, regardless of whether the fiber-reinforced plastic tube is connected to the metallic inner tube via a shrink connection or via an adhesive connection is.
  • the composite can also be given by the outer tube being wound directly onto the inner tube, the different thermal expansions of the two materials, metal on the one hand and fiber-reinforced plastic on the other, being able to be used in a targeted manner.
  • the teaching of the invention leads to an actuator of very light construction, which is nevertheless able to absorb extremely high pressures of the high-pressure medium and can produce corresponding actuating forces.
  • the actuators constructed according to the teaching of the invention are furthermore distinguished by a long service life. They are nonetheless easy to manufacture than mass-produced items.
  • the pressure cylinder does not absorb axial forces caused by pressure medium. These are only taken up by the tie rod, which does not hinder deformation in the circumferential or radial direction. The preload caused by the tie rods is low. Buckling deformations of the printing cylinder are avoided.
  • the highly rigid fiber composite pipe counteracts an annoying increase in diameter as a result of the internal pressure.
  • the collar designs can be designed as a circumferential collar and molded onto the adapters. But there is also the possibility to design the collar recesses as collar sections and to form them onto the adapters. Depending on the design of the federal government training, one could also speak of flanges. According to a preferred embodiment of the invention Drawbars designed as bolts and have these nuts, via which the tensile force can be adjusted.
  • the fiber-reinforced plastic tube is expediently designed in detail as it results from the claims 9 to 14.
  • the actuators shown in the figures are actuators for the high pressure hydraulics. They have at least one pressure cylinder 1 in which a metallic actuating piston 2 with a piston rod 3 is guided.
  • FIGS. 1 and 2 From a comparative view of FIGS. 1 and 2 it can be seen that as the pressure cylinder 1, a composite unit made of a metallic liner in the form of a circular cylindrical inner tube 4 and one placed thereon fiber-reinforced plastic tube 5 is executed.
  • the plastic tube forms the outer tube.
  • the pressure cylinder 1 has metallic end components 6 which are fitted into the pressure cylinder 1 with a cylindrical fitting piece and are connected to it in a sealed manner.
  • the end components 6 project with collar formations 8 above the pressure cylinder.
  • the arrangement is such that at least one end component 6 has a bore 9 in which the piston rod 3 is guided.
  • Usual seals 10 are provided.
  • the high-pressure medium is supplied and removed via channels 11 in these end components 6.
  • the two end components 6 are connected by tie rods 12 which are held in the collar 8. You are e.g. B. passed through corresponding holes 13.
  • the pressure cylinder 1 is stabilized against deformations caused by high pressure medium.
  • the pressure cylinder 1 may be under the pressure of a high pressure medium. It can be seen that the pressure cylinder 1 does not have deformations caused by high pressure medium.
  • the inner tube 4 is a drawn tube in the form of a precision tube with a wall thickness of less than 1 mm. It was for reasons of scale in Fig. 1 with a drawn excessively thick wall.
  • the actuating piston 2 and / or the end components 6 consist of an alloy from the group of steel alloys, aluminum alloys, magnesium alloys, aluminum / magnesium alloys.
  • the end components 6 may be positively connected to the inner tube 4, as is indicated in FIG. 1.
  • the composite also acts as a seal.
  • the collar designs 8 are designed as a circumferential collar, which has a flange-like character in the exemplary embodiment.
  • the tie rods 12 are bolts which have nuts 14, via which the tensile force can be adjusted.
  • the construction of the plastic tube 5 can only be hinted at. It is designed in detail as it corresponds to claims 9 to 14.
  • an actuator constructed according to the teaching of the invention can also have an actuating piston 2 with two piston rods 3 or two actuating pistons 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
EP19950112898 1994-08-27 1995-08-17 Cylindre à pression pour hydraulique à haute pression Expired - Lifetime EP0701065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4430502 1994-08-27
DE19944430502 DE4430502C2 (de) 1994-08-27 1994-08-27 Verwendung eines Verbundaggregates aus einem Liner und einem faserverstärkten Kunststoffrohr als Druckzylinder eines Stelltriebes der Hochdruckhydraulik

Publications (3)

Publication Number Publication Date
EP0701065A2 true EP0701065A2 (fr) 1996-03-13
EP0701065A3 EP0701065A3 (fr) 1996-12-27
EP0701065B1 EP0701065B1 (fr) 2000-03-01

Family

ID=6526745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950112898 Expired - Lifetime EP0701065B1 (fr) 1994-08-27 1995-08-17 Cylindre à pression pour hydraulique à haute pression

Country Status (4)

Country Link
EP (1) EP0701065B1 (fr)
DE (1) DE4430502C2 (fr)
DK (1) DK0701065T3 (fr)
ES (1) ES2145858T3 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19649133C1 (de) * 1996-11-27 1998-03-05 Dornier Gmbh Hydraulik-Zylinder
EP0841490A2 (fr) 1996-11-05 1998-05-13 Deutsches Zentrum für Luft- und Raumfahrt e.V. Dispositif pour l'introduction de force
WO1998022715A3 (fr) * 1996-11-16 1998-09-03 Lingk & Sturzebecher Leichtbau Tige de piston pour piston de regulation d'un reducteur de positionnement
WO2006055997A1 (fr) 2004-11-25 2006-06-01 HÖLZL, Margit Cylindre pour l'hydraulique haute pression
US7984731B2 (en) 2007-11-13 2011-07-26 Parker-Hannifin Corporation Lightweight high pressure repairable piston tie rod composite accumulator
US8262825B2 (en) 2007-09-11 2012-09-11 Parker Hannifin Gmbh End-fittings for composite tubes, method for joining fittings to the ends of composite tubes and composite tubes incorporating end-fitting
US8695643B2 (en) 2007-11-08 2014-04-15 Parker-Hannifin Corporation Lightweight high pressure repairable piston composite accumulator with slip flange
DE102009014813B4 (de) * 2009-03-25 2014-10-23 Festo Ag & Co. Kg Linearantrieb
EP4545807A1 (fr) * 2023-10-23 2025-04-30 Goodrich Actuation Systems SAS Ensemble actionneur

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19732934A1 (de) * 1997-07-31 1999-02-04 Mannesmann Rexroth Ag Hydraulischer Zylinder in Zugankerbauart, insbesondere für Kleinpressen
DE19811657A1 (de) * 1998-03-18 1999-09-23 Schaeffler Waelzlager Ohg Hydraulisch betätigbares Ausrücksystem
EP0987446A1 (fr) * 1998-09-15 2000-03-22 Lingk & Sturzebecher Leichtbau GmbH Vérin hydraulique
DE19925600A1 (de) * 1999-06-04 2000-12-14 Sbs Sondermaschinen Gmbh Leichtbau-Hydraulikzylinder mit Zugankern
DE102004008523B4 (de) * 2004-02-20 2007-02-01 Liebherr-Aerospace Lindenberg Gmbh Verfahren zur Herstellung eines Druckzylinders und Kolbenstange für Aktuatoren oder Stoßdämpfer und Verfahren zu deren Herstellung
DE102006047413B4 (de) * 2005-10-06 2014-01-16 Technische Universität Dresden Zylinder aus Faserverbundwerkstoff mit metallischen Flanschkomponenten sowie Verfahren zur Herstellung
DE102009029299B4 (de) * 2009-09-09 2015-12-31 Leichtbau-Zentrum Sachsen Gmbh Schwingungsdämpfer
AT512703B1 (de) * 2012-04-12 2014-06-15 Neuson Hydrotec Gmbh Kolben-Zylindereinheit
DE102015211545B3 (de) * 2015-06-23 2016-11-10 Innotec Lightweight Engineering & Polymer Technology Gmbh Zylinderrohr für einen Hydraulik- oder Pneumatikzylinder
DE102017000857A1 (de) * 2017-01-31 2018-08-02 Liebherr-Components Kirchdorf GmbH Zylinder-Kolben-Vorrichtung
EP3546787B1 (fr) * 2018-03-27 2021-02-24 Aida Engineering, Ltd. Dispositif de coussin de gaz
DE102023200931B4 (de) * 2023-02-06 2025-05-08 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein Hydraulikzylinder, Verfahren zu seiner Herstellung und damit ausgestatteter Bohrhammer
DE102023205446A1 (de) * 2023-06-13 2024-12-19 Zf Friedrichshafen Ag Verstellbare Dämpfventileinrichtung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011319A1 (fr) 1990-01-25 1991-08-08 Hitachi Construction Machinery Co., Ltd. Recipient de pression en materiau composite
WO1993023675A1 (fr) 1992-05-13 1993-11-25 Hr Textron Inc. Cylindre composite pour verins hydrauliques d'avions

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3286737A (en) * 1963-08-01 1966-11-22 Dowsmith Inc Wear-resistant article and method of making the same
DE6916307U (de) * 1969-04-23 1969-09-04 Kloeckner Werke Ag Druckzylinder
FR2554876B1 (fr) * 1983-11-10 1988-02-26 Peugeot Aciers Et Outillage Verin a base de materiaux composites
IT1185613B (it) * 1985-05-30 1987-11-12 Magnaghi Cleodinamica Spa Accumulatore di pressione gas-olio con struttura in materiali compositi per circuiti idraulici di velivoli
US4885981A (en) * 1988-04-08 1989-12-12 General Signal Corporation Spring return cylinder actuator
DE9207582U1 (de) * 1992-06-04 1992-08-20 Festo KG, 7300 Esslingen Gehäuse für einen Arbeitszylinder
JPH0829265B2 (ja) * 1992-12-09 1996-03-27 崇 川合 粒体選別装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011319A1 (fr) 1990-01-25 1991-08-08 Hitachi Construction Machinery Co., Ltd. Recipient de pression en materiau composite
WO1993023675A1 (fr) 1992-05-13 1993-11-25 Hr Textron Inc. Cylindre composite pour verins hydrauliques d'avions

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0841490A2 (fr) 1996-11-05 1998-05-13 Deutsches Zentrum für Luft- und Raumfahrt e.V. Dispositif pour l'introduction de force
DE19645467A1 (de) * 1996-11-05 1998-05-14 Deutsch Zentr Luft & Raumfahrt Vorrichtung zur Krafteinleitung
WO1998022715A3 (fr) * 1996-11-16 1998-09-03 Lingk & Sturzebecher Leichtbau Tige de piston pour piston de regulation d'un reducteur de positionnement
DE19649133C1 (de) * 1996-11-27 1998-03-05 Dornier Gmbh Hydraulik-Zylinder
WO2006055997A1 (fr) 2004-11-25 2006-06-01 HÖLZL, Margit Cylindre pour l'hydraulique haute pression
US8262825B2 (en) 2007-09-11 2012-09-11 Parker Hannifin Gmbh End-fittings for composite tubes, method for joining fittings to the ends of composite tubes and composite tubes incorporating end-fitting
US8695643B2 (en) 2007-11-08 2014-04-15 Parker-Hannifin Corporation Lightweight high pressure repairable piston composite accumulator with slip flange
US7984731B2 (en) 2007-11-13 2011-07-26 Parker-Hannifin Corporation Lightweight high pressure repairable piston tie rod composite accumulator
DE102009014813B4 (de) * 2009-03-25 2014-10-23 Festo Ag & Co. Kg Linearantrieb
EP4545807A1 (fr) * 2023-10-23 2025-04-30 Goodrich Actuation Systems SAS Ensemble actionneur

Also Published As

Publication number Publication date
DE4430502C2 (de) 1999-08-19
DK0701065T3 (da) 2000-07-31
ES2145858T3 (es) 2000-07-16
EP0701065A3 (fr) 1996-12-27
EP0701065B1 (fr) 2000-03-01
DE4430502A1 (de) 1996-02-29

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