EP1819928A1 - Cylindre pour l'hydraulique haute pression - Google Patents

Cylindre pour l'hydraulique haute pression

Info

Publication number
EP1819928A1
EP1819928A1 EP05804672A EP05804672A EP1819928A1 EP 1819928 A1 EP1819928 A1 EP 1819928A1 EP 05804672 A EP05804672 A EP 05804672A EP 05804672 A EP05804672 A EP 05804672A EP 1819928 A1 EP1819928 A1 EP 1819928A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
inner tube
fiber
reinforced plastic
jacket
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
EP05804672A
Other languages
German (de)
English (en)
Other versions
EP1819928B1 (fr
Inventor
Othmar HÖLZL
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.)
Holzl Margit
Original Assignee
Holzl Margit
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 Holzl Margit filed Critical Holzl Margit
Publication of EP1819928A1 publication Critical patent/EP1819928A1/fr
Application granted granted Critical
Publication of EP1819928B1 publication Critical patent/EP1819928B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F15B15/1428—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
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1438—Cylinder to end cap assemblies
    • 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 a cylinder for high-pressure hydraulics with a cylinder jacket running between a cylinder base and a cylinder head comprising an inner tube and an outer sheath of fiber-reinforced plastic applied to the inner tube.
  • the radial compressive forces are transmitted via the thin-walled inner tube to the fiber-reinforced outer jacket, which absorbs these compressive forces without having to fear a leakage of the cylinder, because the outer sheath made of fiber-reinforced plastic remains free of axial tensile loads.
  • the axial forces caused by the high-pressure hydraulics are absorbed exclusively by the tie rods.
  • a disadvantage of these known cylinders is that the tie rods required for receiving the axial forces do not only increase the construction costs and the cylinder dimensions, but also entail an increase in weight. Presentation of the invention
  • the invention is therefore the object of a cylinder for Hochdruck ⁇ hydraulics of the type described in such a way that can be dispensed with simple structural means on the use of tie rods for receiving the axial forces.
  • the invention solves the problem set by the fact that the screwed with the Zylinderbo ⁇ , with the outer shell shear-resistant connected inner tube of the cylinder jacket tensile strength acts on the cylinder head.
  • the axial forces can be surprisingly absorbed even in a Hoch réellehy ⁇ draulik by the cylinder jacket, if by a shear-resistant connection of the outer sheath made of fiber reinforced plastic with the inner tube corresponding, both in the circumferential direction and in the axial direction effective composite body is created.
  • the outer jacket of the cylinder jacket can be adapted in a simple manner to the respective load requirements. With the elimination of tie rods thus very light pressure cylinders are possible, which can be used despite the lightweight design for high pressure hydraulics.
  • the inner tube may consist of metal, but also of a polyetheretherketone (PEEK) in a manner known per se, because in both cases not only the axial tensile forces in combination with the outer sheath of fiber-reinforced plastic can be absorbed, but also the outer sheath an immediate load is protected by the hydraulic means, so that the strength properties of the fiber-reinforced plastic can not be affected by penetrating into micropores hydraulic fluid.
  • PEEK polyetheretherketone
  • connection conditions for the cylinder jacket to the cylinder bottom arise when the outer sheath made of plastic with the cylinder bottom is shear-resistant and the cylinder bottom overlaps the end, so that the axial introduction of force into the outer sheath aus ⁇ not finally on the shear forces between the inner tube and therelyman ⁇ tel done.
  • the shear-resistant connection between the outer sheath of fiber-reinforced plastic with the inner tube or the cylinder base can be achieved in a simple manner by an adhesive layer.
  • the tensile connection of the cylinder head to the cylinder jacket can be solved in a similar manner as the connection of the cylinder base constructive, but this excludes a subsequent removal of the cylinder head from the cylinder jacket and thus a possible piston expansion.
  • the inner tube of the cylinder jacket on the Zylinderkopf ⁇ side have an end annular flange which is overlapped by a cylinder head provided on the union nut, so that with the help of this Koch ⁇ nut the necessary tensile connection between the inner tube of the cylinder jacket and the cylinder head can be ensured can.
  • the outer sheath of fiber-reinforced plastic extends to the cylinder head side annular flange of the inner tube.
  • the illustrated cylinder has a cylinder bottom 1, a cylinder head 2 and a cylinder extending between cylinder base 1 and cylinder head 2 dermantel 3 on.
  • the cylinder jacket 3 is formed by a composite body made of a thin-walled, metallic inner tube 4 and an outer jacket 5 made of fiber-reinforced plastic that is connected to the inner tube 4 in a shear-resistant manner.
  • carbon fibers are preferably used. The choice of plastic is naturally made depending on the particular load requirements.
  • the inner tube 4 has on the side of the cylinder base 1 a thickened connection portion 6 with a thread 7, by means of which the inner tube 4 is connected in a tensile strength with the cylinder base 1.
  • the inner tube 4 is also provided with a thickened end portion 8, which, however, forms an end-side annular flange 9.
  • This annular flange 9 is overlapped by a screw-mounted on the cylinder head 2 screw nut 10, so that a tensile connection with the cylinder head 2 is made by the nut 10, which can be removed after loosening the nut 10 from the cylinder jacket 3.
  • the outer sheath 5 made of fiber-reinforced plastic extends in the region of the end portion 8 of the inner tube 4 to the annular flange 9 and is therefore enclosed by the union nut 10.
  • the outer shell 5 is extended beyond the thickened end portion 6 out and overlaps the cylinder base 1 frontally, whereby the axial connection of the cylinder jacket 3 is advantageously supported on the cylinder base 1, especially if the outer jacket 5 also with the Cylinder bottom 1 is shear-resistant connected by an adhesive layer.
  • the inner tube 4 may also be made of plastic, namely of a polyetheretherketone. Also in this case, the inner tube 4 is screwed to the Zylin derêt to achieve a secure axial connection. In addition, the inner tube 4 can be glued to the cylinder bottom.
  • the piston 13 with the piston rod 14 may also be made of fiber-reinforced plastic, but this is not mandatory.
  • a metallic coating is recommended in order to improve the sealing conditions for a high-pressure hydraulics.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Types And Forms Of Lifts (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Separation By Low-Temperature Treatments (AREA)
EP05804672A 2004-11-25 2005-11-24 Cylindre pour l'hydraulique haute pression Active EP1819928B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0198004A AT502447B1 (de) 2004-11-25 2004-11-25 Zylinder für hochdruckhydraulik
PCT/AT2005/000472 WO2006055997A1 (fr) 2004-11-25 2005-11-24 Cylindre pour l'hydraulique haute pression

Publications (2)

Publication Number Publication Date
EP1819928A1 true EP1819928A1 (fr) 2007-08-22
EP1819928B1 EP1819928B1 (fr) 2010-08-25

Family

ID=35953816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05804672A Active EP1819928B1 (fr) 2004-11-25 2005-11-24 Cylindre pour l'hydraulique haute pression

Country Status (5)

Country Link
US (1) US20100077918A1 (fr)
EP (1) EP1819928B1 (fr)
AT (2) AT502447B1 (fr)
DE (1) DE502005010149D1 (fr)
WO (1) WO2006055997A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ561410A (en) 2007-09-11 2010-04-30 Parker Hannifin Gmbh End-fittings for composite tubes, method for joining fittings to the ends of composite tubes and composite tubes incorporating end-fittings
DE102010024126A1 (de) * 2010-06-17 2011-12-22 Carl Freudenberg Kg Kolbenspeicher
CN102705293B (zh) * 2012-06-14 2014-04-09 中联重科股份有限公司 致动缸的缸体及其制造方法和混凝土泵送设备
CN103075387B (zh) * 2013-01-21 2015-08-05 四川重汽王牌兴城液压件有限公司 2tg-e110×90液压油缸进油机构及其生产方法
DE102013201301B3 (de) * 2013-01-28 2014-05-22 Zf Friedrichshafen Ag Zylinderaggregat mit einer Klebeverbindung
FR3002187B1 (fr) * 2013-02-20 2016-07-22 Peugeot Citroen Automobiles Sa Dispositif d'amortissement a jambe de force hybride, pour un train avant de vehicule
DE102015211545B3 (de) * 2015-06-23 2016-11-10 Innotec Lightweight Engineering & Polymer Technology Gmbh Zylinderrohr für einen Hydraulik- oder Pneumatikzylinder
CN105673609B (zh) * 2016-03-17 2018-11-16 中联重科股份有限公司 复合材料套筒和液压缸
CN105587709B (zh) * 2016-03-17 2018-03-06 中联重科股份有限公司 液压缸
US10272991B2 (en) 2016-06-23 2019-04-30 Goodrich Corporation Metallic composite joint
CN107693292A (zh) * 2017-10-26 2018-02-16 广州艾捷斯医疗器械有限公司 一种靠背可伸缩的儿童牙科综合治疗机
AU2018203763A1 (en) * 2018-05-29 2019-12-19 Turnbull, Sam Dominic Seaton MR Intrascopic Cylinder
DE102021209068A1 (de) * 2021-08-18 2023-02-23 Festo Se & Co. Kg Fluidbetätigter Arbeitszylinder und diesbezügliches Herstellungsverfahren
JP7431919B1 (ja) * 2022-10-19 2024-02-15 カヤバ株式会社 流体圧シリンダ
EP4261385A1 (fr) * 2023-01-24 2023-10-18 DWL Baumaschinen AG Unité de presse à dresser pour constructions de conduites sans tranchée

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US2865693A (en) * 1954-05-18 1958-12-23 George E Barnhart Cylinder construction
US3334773A (en) * 1965-04-12 1967-08-08 Charles W Bimba Fluid motor with removable-locking end closure unit
DE6916307U (de) 1969-04-23 1969-09-04 Kloeckner Werke Ag Druckzylinder
JPS5864715A (ja) * 1981-10-12 1983-04-18 三菱電機株式会社 炭化水素地下資源電気加熱用電極装置の電気絶縁被覆された導管の製造法
JPS603388A (ja) * 1983-06-17 1985-01-09 三菱電機株式会社 炭化水素地下資源電気加熱用電極支持導管およびその製法
US4697499A (en) * 1984-08-20 1987-10-06 Pneumo Corporation Dual tandem composite cylinder assembly
CA1251379A (fr) * 1984-08-20 1989-03-21 William Dirkin Commande fluidique a cylindre composite
US4685384A (en) * 1984-08-20 1987-08-11 Pneumo Corporation Fluid actuator including composite cylinder assembly
US4867044A (en) * 1984-11-26 1989-09-19 The United States Of America As Represented By The Secretary Of The Navy Jam resistant fluid power actuator for ballistic-damage tolerant redundant cylinder assemblies
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
US5415079A (en) * 1992-05-13 1995-05-16 Hr Textron, Inc. Composite cylinder for use in aircraft hydraulic actuator
DE4430502C2 (de) 1994-08-27 1999-08-19 Lingk & Sturzebecher Gmbh Verwendung eines Verbundaggregates aus einem Liner und einem faserverstärkten Kunststoffrohr als Druckzylinder eines Stelltriebes der Hochdruckhydraulik
US5651303A (en) * 1994-11-14 1997-07-29 Polygon Company Fluid cylinder end cap assembly
DE19649133C1 (de) * 1996-11-27 1998-03-05 Dornier Gmbh Hydraulik-Zylinder
NL1017640C2 (nl) * 2001-03-19 2002-09-20 Steon Holding B V Cilinder en zuiger-cilindersamenstel.
WO2004070163A1 (fr) * 2003-02-03 2004-08-19 Baker Hughes Incorporated Garniture d'etancheite (packer) de fond de trou ou bouchon provisoire composite gonflable

Non-Patent Citations (1)

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Title
See references of WO2006055997A1 *

Also Published As

Publication number Publication date
ATE479024T1 (de) 2010-09-15
US20100077918A1 (en) 2010-04-01
WO2006055997A1 (fr) 2006-06-01
AT502447B1 (de) 2007-06-15
DE502005010149D1 (de) 2010-10-07
EP1819928B1 (fr) 2010-08-25
AT502447A1 (de) 2007-03-15

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