EP3580463A1 - Dispositif cylindre-piston comportant au moins un tube intérieur et au moins un tube extérieur - Google Patents

Dispositif cylindre-piston comportant au moins un tube intérieur et au moins un tube extérieur

Info

Publication number
EP3580463A1
EP3580463A1 EP18704936.6A EP18704936A EP3580463A1 EP 3580463 A1 EP3580463 A1 EP 3580463A1 EP 18704936 A EP18704936 A EP 18704936A EP 3580463 A1 EP3580463 A1 EP 3580463A1
Authority
EP
European Patent Office
Prior art keywords
cylinder
tube
inner tube
outer tube
piston device
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
EP18704936.6A
Other languages
German (de)
English (en)
Other versions
EP3580463B1 (fr
Inventor
Hans-Peter Lavergne
Anton STAIMER
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 Components Kirchdorf GmbH
Original Assignee
Liebherr Components Kirchdorf 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 Liebherr Components Kirchdorf GmbH filed Critical Liebherr Components Kirchdorf GmbH
Publication of EP3580463A1 publication Critical patent/EP3580463A1/fr
Application granted granted Critical
Publication of EP3580463B1 publication Critical patent/EP3580463B1/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
    • F15B15/1438—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
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/30—Accumulator separating means
    • F15B2201/31—Accumulator separating means having rigid separating means, e.g. pistons
    • 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
    • F15B2201/00—Accumulators
    • F15B2201/40—Constructional details of accumulators not otherwise provided for
    • F15B2201/405—Housings
    • F15B2201/4056—Housings characterised by the attachment of housing components
    • 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

  • Cylinder-piston device with at least one inner tube and at least one outer tube
  • the invention relates to a cylinder-piston device with at least one inner tube and at least one outer tube, wherein the inner tube is at least partially supported within the outer tube, with at least one cylinder head, with at least one piston rod bearing and at least one sleeve.
  • a notched ring is wrapped in the manufacturing process of the cylinder tube together with this.
  • the notch of the ring ring elements are inserted and clamped with a two-piece tail.
  • a disadvantage of the said devices are the complicated production and / or assembly required for their production and the use of complex and correspondingly expensive individual components.
  • a cylinder-piston device which can be produced particularly easily and which is better suited for the use or load of the device occurring buckling and / or bending forces and by the pressurized fluid on the Cylinder piston device to absorb acting pressure forces.
  • a cylinder-piston device with the features of claim 1.
  • Advantageous embodiments are the subject of the dependent claims. Accordingly, a cylinder-piston device is provided with at least one inner tube and at least one outer tube, wherein the inner tube is at least partially supported within the outer tube.
  • the cylinder Piston device further comprises at least one cylinder head, at least one piston rod bearing and at least one sleeve.
  • the cylinder-piston device may comprise a piston with a corresponding piston head.
  • the at least one sleeve can be designed to determine the inner tube and / or the outer tube on the piston rod bearing and / or on the cylinder head, in particular in a force-locking and / or form-fitting manner.
  • means for a cohesive bond of said components can be provided in the coupling region defined here, alternatively or additionally.
  • the coupling can therefore be chosen almost arbitrarily and also combined.
  • the at least one cuff may, according to a preferred but not to be envisaged embodiment, at least one slotted end portion of the inner tube and / or the outer tube to the cylinder head and / or to determine the piston rod bearing.
  • the cuff may be at least partially concave in the region in which it rests against the slotted end region.
  • the terms of the cylinder head, the piston rod bearing and the end portions are to be interpreted broadly and may refer to features that are similar in function to the features described.
  • the cylinder head and / or the piston rod bearing can therefore designate components which limit or close a cylinder-piston device in the axial outward direction.
  • the slotted end regions may mean axially outer regions of the tubes which do not have a planar outer surface but comprise, for example, regularly or irregularly arranged recesses.
  • the inventively designed coupling mechanism between the tubes and the cylinder head or the piston rod bearing allows the use of particularly easy to manufacture tube blanks for manufacturing the inner tube and / or the outer tube. This in turn requires a particularly flexible production of cylinder-piston devices according to the invention with different Chen dimensions of a variable modular system of the necessary components.
  • the inner tube and / or the outer tube and / or the sleeve made of a fiber composite plastic and / or are made of a metal. It is therefore also conceivable that at least a part of said components is made of a fiber composite plastic, while another part of said components is made of a metal. Also conceivable are combined components in which both one metal or several metals as well as fiber composite plastics or a fiber composite plastic are used. The use of a fiber composite plastic or of fiber composite plastics makes the production advantageously easier cylinder piston devices possible.
  • the inner tube and / or the outer tube are at least partially closed by the cylinder head and / or the piston rod bearing.
  • the axially outer regions of the inner tube and / or of the outer tube can thus be closed at least partially with a particularly at least partially circular or annular surface.
  • the term of the cylinder tube may refer to one of the two tubes inner tube or outer tube or include both tubes.
  • the sleeve in particular pressed, onto tongues of the inner tube and / or the outer tube, in particular radially outwards. Formations or sections in the axial end regions of the tubes can be formed with the tongues of the tubes mentioned. be thought, which are formed by the slotted design of the end portions as tongue-shaped, lug-shaped or similar portions of the tubes and extend in particular in the axial direction outwardly away from the remaining structure of the tubes or of the tube.
  • the sleeve can be arranged at least partially in the radial direction further out than the tongues.
  • a radially inner portion of the collar may be in direct or indirect contact with a radially outer portion of the tongues. By indirect contact is meant in particular a contact of the respective sections, in which an additional adhesive is provided between the tongues and the sleeve.
  • the tongues can be particularly easily pressed or bent by the cuffs against other components of the cylinder-piston device and thereby the coupling of said components can be particularly easily effected.
  • adhesive is provided in the region of the tongues.
  • the adhesive can improve the coupling between said components and also exert a sealing effect for sealing the cylinder-piston device in the respective area.
  • a pressure-stable filler in particular made of plastic, wood and / or metal, is provided between the inner tube and the outer tube.
  • a pressure-stable filler in particular made of plastic, wood and / or metal, is provided between the inner tube and the outer tube.
  • the pressure-stable filler a better power transmission between the inner tube and the outer tube can be made possible and so the pressure load, for example, of the inner tube can be reduced.
  • the stability of the cylinder-piston device with respect to other loads than the pressure load can be improved. In particular, the stability of the cylinder-piston device with respect to buckling and / or bending loads can be increased.
  • the inner tube is at least partially within the outer tube and / or concentric with it is stored. In a further preferred embodiment it can be provided that the inner tube is shorter than the outer tube.
  • the difference in length between the tubes may correspond substantially to the axial extent of two sleeves. In this case, a length difference is conceivable which corresponds for example to more than 50% of the summed axial extent of the two sleeves and in particular more than 80% of the summed axial extent of the two sleeves.
  • the inner tube and / or the outer tube can comprise two slotted end regions which lie opposite one another.
  • the two slotted end portions can be provided in each case on axially opposite sides of the respective tube.
  • the invention is further directed to a pressure accumulator or an actuator with at least one cylinder-piston device according to one of claims 1 to 9.
  • Figure 1 an external view of a cylinder-piston device according to the invention
  • Figure 2 is a longitudinal sectional view of a cylinder-piston device according to the invention.
  • 3a and 3b detailed views for coupling the individual components of the cylinder-piston device according to the invention.
  • FIG. 1 shows an external view of a cylinder-piston device according to the invention, wherein an outer tube 7 of the cylinder of the cylinder-piston device is shown externally, at the two axial end regions of which there is respectively a sleeve 5 for coupling at least part of the components of the cylinder. the piston device is provided.
  • an end region of a piston 1 mounted at least partly within the cylinder 7 is shown, which can comprise an eye or a bushing for coupling the cylinder-piston device with other devices.
  • a second eye or a second passage is shown, which may be associated with a partially visible cylinder head 4, which may be at least partially received by the upper sleeve 5 or included.
  • Figure 2 shows a longitudinal sectional view of a cylinder-piston device according to the invention, in which a piston 1 is slidably mounted within the complex cylinder of the cylinder-piston device.
  • the cylinder in this case comprises an inner tube 6 and an inner tube 6 surrounding the outer tube 7, which may be arranged coaxially with each other.
  • the piston 1 has a piston head 2, which is mounted displaceably within the inner ear 6.
  • a seal 10 can seal the sealing gap between the piston head 2 and the inner tube 6.
  • a cylinder head 4 may be adapted to be coupled to both pipes 6, 7.
  • an in particular cylindrical elevation 41 may be provided in an axially central region of the cylinder head 4, in whose lateral surface or in the lateral surface region of a seal 1 1 may be provided.
  • the seal 1 1 may be adapted to seal the sealing gap between the elevation 41 and the inner tube 6.
  • the cylinder head 4 may further comprise on a radially outer side and in particular on a radially furthest surface a radially inwardly curved portion, on which one of the tubes 6, 7 can abut with its slotted end portion 71.
  • the slotted end region 71 of the corresponding tube 6, 7 can be pressed against the cylinder head 4 by the sleeve 5, wherein the slotted end regions 71 or the slotted end region 71 can be curved radially inwards.
  • a piston rod bearing 3 is provided, in which the piston rod 1 is slidably mounted.
  • the sealing gap between the piston rod 1 and the bearing 3 can be sealed by at least one seal 8. It is also conceivable embodiment with three corresponding seals. 8
  • a seal 9 for sealing the corresponding sealing gap can also be provided between the piston rod bearing 3 and the inner tube 6.
  • the sleeve 5 may be non-positively and / or positively connected to at least one of the tubes 6, 7. For this purpose, it is conceivable to press the sleeve 5 to the respective components, to screw with the rod bearing 3 and / or with the cylinder head 4 and / or otherwise to couple.
  • Figures 3a and 3b show the corresponding coupling region of the sleeve 5 in a side or an exploded perspective view.
  • the slotted end portions 71 of the tube 6, 7 can be slotted in the axial direction, in particular, identical tongues can be worked out of the tubes 6, 7.
  • the tongues can be made in one piece with the rest of the structure of the tube or tubes 6, 7.
  • both tubes 6, 7 are each pressed by their own sleeve 5 onto, for example, the piston rod bearing 3 and / or the cylinder head 4, wherein the two sleeves 5 can be at least partly supported one inside the other and can comprise, for example, bushings or at least one bushing through which the internally mounted piston rod bearing 3 or the internally mounted cylinder head 4 can be performed by the cuffs 5 to the outside.
  • the cuffs 5 can be made according to different diameters.
  • the inner tube 6 and / or the outer tube 7 may be made of a fiber composite plastic. Also conceivable are embodiments in which one of the tubes 6, 7 is made of one material, while the other tube 6, 7 is made of a different material.
  • the inner tube 6 and / or the outer tube 7 may be at least partially in their respective ceiling area or floor area, i. their axially outer openings or sections by means of the cylinder head 4 and / or closed by means of the piston rod bearing 3.
  • planar and further, in particular parallel arranged closure portions may be provided on the cylinder head 4 and / or on the piston rod bearing 3. These may be circular or annular and may be arranged concentrically with each other.
  • the invention may relate to a hydraulic cylinder or actuator and / or to a pressure accumulator.
  • the case provided cylinder tube can be made in two parts.
  • An inner tube 6 may be at least partially supported within an outer tube 7.
  • the tubes can be made of fiber composite plastic or metal.
  • the inner tube 6 may be at least partially closed by the piston rod bearing 3 and the cylinder head 4. About this internal structure, the particular cylindrical outer tube 7 can be pushed or positioned. The outer tube 7 and / or the inner tube 6 may be slotted at their ends.
  • the tongues formed by the slots can be pressed firmly onto the rounded outer contours of the piston rod bearing 3 and / or the cylinder head 4 with a fiber composite sleeve 5, which is pressed from the outside.
  • the adhesive can increase the strength of the composite and also as a seal be used.
  • the outer tube 7 may represent a tie rod in this composite. But it can absorb pressure forces.
  • the inner tube 6 absorbs the hydraulic pressure forces and can also be biased. Between the inner and outer tubes 6, 7 can still be a pressure-resistant filler made of plastic, wood or metal are introduced to increase the stiffness or dent resistance.
  • the term of the end pieces may refer in the present case to the cylinder head 4 and / or to the piston rod bearing 3.
  • a non-positive and positive connection between at least the outer tube 7 and the cylinder head 4 and / or the piston rod bearing 3 consist, which makes it possible to initiate the tensile and compressive stresses in the tails.
  • a variable modular system for manufacturing the cylinder-piston device can further be provided, in which the use of easy-to-manufacture tube blanks is possible. Also, at least a part of the components or the semi-finished products can be produced in cost-effective and flexible continuous production. Overall, the geometry of the invention increases the area moment of inertia in the load case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)

Abstract

Dispositif cylindre-piston comportant au moins un tube intérieur (6) et au moins un tube extérieur (7). L'invention concerne un dispositif cylindre-piston comportant au moins un tube intérieur (6) et au moins un tube extérieur (7), le tube intérieur étant monté dans le tube extérieur, et comportant au moins une culasse (4), au moins un support (3) de tige de piston et au moins un manchon (5).
EP18704936.6A 2017-02-07 2018-02-05 Dispositif comportant un piston, un cylindre et au moins un tube intérieur et au moins un tube extérieur Active EP3580463B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017001133.8A DE102017001133A1 (de) 2017-02-07 2017-02-07 Zylinder-Kolben-Vorrichtung mit wenigstens einem Innenrohr und wenigstens einem Außenrohr
PCT/EP2018/052830 WO2018146053A1 (fr) 2017-02-07 2018-02-05 Dispositif cylindre-piston comportant au moins un tube intérieur et au moins un tube extérieur

Publications (2)

Publication Number Publication Date
EP3580463A1 true EP3580463A1 (fr) 2019-12-18
EP3580463B1 EP3580463B1 (fr) 2022-08-24

Family

ID=61198833

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18704936.6A Active EP3580463B1 (fr) 2017-02-07 2018-02-05 Dispositif comportant un piston, un cylindre et au moins un tube intérieur et au moins un tube extérieur

Country Status (3)

Country Link
EP (1) EP3580463B1 (fr)
DE (1) DE102017001133A1 (fr)
WO (1) WO2018146053A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019131319A1 (de) * 2019-11-20 2021-05-20 Thyssenkrupp Ag Schwingungsdämpfer und Kraftfahrzeug mit einem solchen Schwingungsdämpfer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB874999A (en) 1958-02-20 1961-08-16 Bwg Bergwerk U Walzwerk Maschb Hydraulic telescopic pit props
GB1551223A (en) 1975-05-01 1979-08-30 High Temperature Eng Ltd Tubular members
ES2121493B1 (es) 1993-11-02 1999-06-01 Fichtel & Sachs Ag Conjunto de piston y cilindro y procedimiento y dispositivo para cerrar un conjunto de piston y cilindro.
DE19513469C1 (de) 1995-04-08 1996-04-11 Fichtel & Sachs Ag Sicherungselement
US8757423B2 (en) * 2010-07-02 2014-06-24 GM Global Technology Operations LLC Composite pressure vessel and method of assembling the same
DE102013100591A1 (de) * 2013-01-21 2014-07-24 Technische Universität Darmstadt Druckbehälter sowie Verfahren zum Herstellen eines Druckbehälters
AT514081B1 (de) * 2013-03-28 2014-10-15 Mark Hydraulik Gmbh Zylindergehäuse in Leichtbau-Mischbauweise sowie Verfahren zur Herstellung desselben
DE102015213308B4 (de) 2015-07-15 2019-03-14 Thyssenkrupp Ag Schwingungsdämpfer mit Kohlefaserdämpferrohr mit Gewindeadapter für Kraftfahrzeug

Also Published As

Publication number Publication date
DE102017001133A1 (de) 2018-08-09
EP3580463B1 (fr) 2022-08-24
WO2018146053A1 (fr) 2018-08-16

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