EP1516123B1 - Hydrospeicher - Google Patents

Hydrospeicher Download PDF

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Publication number
EP1516123B1
EP1516123B1 EP03729952.6A EP03729952A EP1516123B1 EP 1516123 B1 EP1516123 B1 EP 1516123B1 EP 03729952 A EP03729952 A EP 03729952A EP 1516123 B1 EP1516123 B1 EP 1516123B1
Authority
EP
European Patent Office
Prior art keywords
cover
housing
longitudinal axis
accumulator
opening
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.)
Expired - Lifetime
Application number
EP03729952.6A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1516123A1 (de
Inventor
Armin Kort
Herbert Baltes
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.)
Hydac Technology GmbH
Original Assignee
Hydac Technology 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 Hydac Technology GmbH filed Critical Hydac Technology GmbH
Publication of EP1516123A1 publication Critical patent/EP1516123A1/de
Application granted granted Critical
Publication of EP1516123B1 publication Critical patent/EP1516123B1/de
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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • 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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/04—Accumulators
    • F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
    • F15B1/24—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with 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
    • F15B2201/20—Accumulator cushioning means
    • F15B2201/205—Accumulator cushioning means using gas
    • 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
    • F15B2201/415—Gas ports
    • F15B2201/4155—Gas ports having valve means
    • 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
    • F15B2201/60—Assembling or methods for making accumulators
    • F15B2201/605—Assembling or methods for making housings therefor

Definitions

  • the invention relates to a hydraulic accumulator, in particular piston accumulator, with the features of the preamble of the respective patent claims 1 to 3.
  • Hydro accumulators of various types are commercially available and find widespread use in connection with hydraulic systems.
  • a piston accumulator of this kind is freely marketed, for example, by "Parker Hydraulics" under the trade name ACP Series Accumulator.
  • Such hydraulic accumulators are characterized by comparatively low production costs, because the fastening of the storage enclosure final cover by forming a positive engagement between the cover and the surrounding wall part of the storage enclosure can be done simply and efficiently by surrounding the cover wall, the piston cylinder in question the relevant cylinder tube is deformed by rolling so that a radially inwardly projecting annular bead is formed, which engages in an associated annular groove in the periphery of the lid.
  • the cover On the opposite side of the lid this reduces in diameter to the piston side and forms at the pending transition point from a contact cone for the storage enclosure, which forms an abutment against axial displacement in the other direction. Furthermore, the cover has an O-ring on its end face facing the piston, which is guided in an annular groove of the cover in its cylindrical end region. Due to the multi-stage arrangement in the lid area, the known solution is expensive to produce and with correspondingly high torques twisting of the lid relative to the storage housing as well as the other known solutions can not be ruled out.
  • a circumferential widening is provided as a further additional assurance in the known solution in the region of the free end of the lid with a sloping incision surface against which the corresponding inclined surface of the free end of the cylinder housing can be supported.
  • the solution known to that extent also builds up constructively large and is costly in terms of the variety of different steps and the material used in the production and the aforementioned anti-rotation is still effective from her effectiveness improvement.
  • a comparable solution also shows the DE 1 231 979 B on, which has a rotationally introduced notch in the region of the free end of the storage housing, which engages in a corresponding annular groove in the lid, which incorporated in a peripheral widening and in the lid limits an edge wall part, which folded in the direction of the concave shaped free inclined end of the storage enclosure there as an additional safeguard exerts at least one axial clamping force effect.
  • the invention has the object to provide a hydraulic accumulator which is simple and inexpensive to produce, but still characterized by an improved connection between the storage enclosure and housing cover.
  • this object is achieved according to the invention according to claim 1, that in addition to the positive protection against axial forces for the formation of a further rotation of the lid relative to the longitudinal axis, the lid at its end edge has at least one flat, in the aligned on it end portion of the storage case is pressed as a deformed part.
  • an anti-rotation is formed, which effectively supports the lid against torques that are effective between it and the storage enclosure, so that the above-mentioned operating and / or Installation problems are fixed.
  • the required for the formation of the rotation additional deformation is feasible in the production without difficulty, for example by means of an additional printing or pressing, so that no significant increase in manufacturing costs must be taken with significantly improved effectiveness of rotation against torsional forces.
  • the arrangement may preferably be made such that a plurality of flats distributed around the circumference of the respective lid are provided. These may also be arranged so that they merge to form a polygon shape.
  • a toothing is provided as a further possibility of forming the anti-rotation on the circumference of the lid, with which the wall of the opening of the storage housing as a deformed part, ie the wall of the cylinder tube, can be pressed.
  • a groove is incorporated to form the anti-rotation in the scope of the lid in question, which extends, based on the longitudinal axis with a pitch along the circumference and in a hump-like radially inwardly projecting Wall portion of the opening of the storage enclosure as a deformed part, such as the Cylinder tube, is einpressbar.
  • Such an embodiment is characterized by the possibility of particularly simple and cost-effective production, because, as explained below, in the attachment of the lid concerned except the axial securing effecting Rolliervorgang only another rolling or pressing tool along the circumference of the lid surrounding memory housing must be applied, wherein when the tool overruns the spiral groove, which extends due to the thread pitch over an axial region of the lid, a hump-like inwardly projecting wall portion is pressed into the spiral groove.
  • FIGS. 2 and 3 show a first embodiment of the hydraulic accumulator according to the invention and the 4 and 5 serve to illustrate a second embodiment of the hydraulic accumulator according to the invention, associated sealing elements, each of which serves to seal between the housing cover and storage housing, omitted for simplicity of illustration.
  • All of the illustrated embodiments are piston accumulators in which a cylinder tube 1 is provided as a storage housing.
  • steel with a ductility suitable for deformation by means of impressions or rolling is provided as the material for the cylinder tube 1.
  • the cylinder tube 1 contains a only in Fig. 1 plotted piston 3 as a separator between the liquid side 5 and gas side 7 of the memory.
  • the concentric to the longitudinal axis 9 opening of the cylinder tube 1 is completed at the end of the liquid side 5 by a circular housing cover 11.
  • At the gas side 7 concentric with the longitudinal axis 9 opening of the cylinder tube 1 is closed by a housing cover 13 end. This has a central bore 15 for a gas valve.
  • the lid 11 on the liquid side 5 also has a central bore 17 for connection to a hydraulic system.
  • Each lid 11, 13 has, in its end region facing the piston 3, an annular groove 19 incorporated in its circumference as a seat for a sealing element, not shown in the figures, for example an O-ring.
  • a further annular groove 21 is incorporated in the lid circumference.
  • This annular groove 21 serves for the axial securing of the lid 11, 13 in the cylinder tube 1, by a positive engagement between the cylinder tube 1 and annular groove 21 is formed by an indenting or rolling process, in which on the circumference of the cylinder tube 1, an outer notch 23 is formed through which an inwardly deformed annular bead 25 is generated, which engages in the annular groove 21 ,
  • the lid 11 has a flattening 27 in its outer end region, namely at its axially outer end edge 29.
  • this flattening 27 of the aligned thereon end portion 31 of the cylinder tube 1 is pressed.
  • the axially secured by the engagement of the annular bead 25 in the annular groove 21 cover 11 is thus secured to the flattening 27 in addition to rotation about the longitudinal axis 9.
  • the lid 11 between the annular groove 21 and the axially outer end edge 29 has a further annular groove 35, which has a spiral course, ie a thread pitch, relative to the longitudinal axis 9.
  • a further annular groove 35 is formed by an indentation or rolling process, which is performed on the cylinder tube 1 in the overflowed by the spiral annular groove 35 axial portion, a further notch 37 on the outside of the cylinder tube 1, through the wall material of the cylinder tube 1 as a bump 39 is pressed into the spiral annular groove 35.
  • a protuberance 39 results from the fact that a notching does not take place over the entire circumference of the cylinder tube 1, but only at the point at which the indenting or rolling tool overflows the spiral annular groove 35.
  • the cusp 39 which is only pressed in at this point, forms a discontinuity which, because of the oblique surfaces adjoining the cusp 39 due to the thread pitch of the spiral annular groove 35, acts as a security against rotation.
  • the bump 39 containing part of the spiral annular groove 35 remains free, as can be seen at 41, where the end edge 29 adjacent the end of the annular groove 35 can be seen.
  • a toothing for example in the form of a knurling, on the relevant cover, be provided.
  • a plurality of flats may be provided on the circumference of the lid in question, wherein any designs may be provided which lead to a non-circular shape on the lid in question, for example to the shape of a polygon.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
EP03729952.6A 2002-06-27 2003-04-30 Hydrospeicher Expired - Lifetime EP1516123B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10228701 2002-06-27
DE10228701A DE10228701A1 (de) 2002-06-27 2002-06-27 Hydrospeicher
PCT/EP2003/004499 WO2004003392A1 (de) 2002-06-27 2003-04-30 Hydrospeicher

Publications (2)

Publication Number Publication Date
EP1516123A1 EP1516123A1 (de) 2005-03-23
EP1516123B1 true EP1516123B1 (de) 2017-01-04

Family

ID=29723484

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03729952.6A Expired - Lifetime EP1516123B1 (de) 2002-06-27 2003-04-30 Hydrospeicher

Country Status (5)

Country Link
US (1) US7066208B2 (ja)
EP (1) EP1516123B1 (ja)
JP (1) JP4437080B2 (ja)
DE (1) DE10228701A1 (ja)
WO (1) WO2004003392A1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420380A (en) * 2004-11-18 2006-05-24 Parker Hannifin Plc Twin piston gas filled hydraulic actuator
WO2007130337A1 (en) 2006-05-01 2007-11-15 Michigan State University Process for the treatment of lignocellulosic biomass
WO2008157327A1 (en) * 2007-06-14 2008-12-24 Hybra-Drive Systems, Llc Compact hydraulic accumulator
EP2630399A2 (en) * 2010-09-22 2013-08-28 Limo-Reid, Inc. Ultra lightweight and compact accumulator
DE102010063318A1 (de) * 2010-12-17 2012-06-21 Robert Bosch Gmbh Hydraulikvorrichtung, insbesondere Niederdruckspeicher mit einem Verschlusselement
US9739292B1 (en) 2014-03-21 2017-08-22 Kocsis Technologies, Inc. Hydraulic accumulator having a closing arrangement
US20230135948A1 (en) * 2020-11-19 2023-05-04 Sonnax Transmission Company Drop-in signal accumulator piston kit and method for replacing an original equipment signal accumulator piston
EP4227572A1 (en) * 2022-02-15 2023-08-16 Parker Hannifin EMEA S.à.r.l. Storage tank for gaseous hydrogen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487512A (en) * 1946-01-10 1949-11-08 Automotive & Aircraft Hydrauli Cylinder and cylinder head construction

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2461132A (en) * 1946-12-07 1949-02-08 Urschel Engineering Company Fluid pressure unit
US2774619A (en) * 1953-07-04 1956-12-18 Mercier Jean Sealing means for a slidable member in a pressure unit
US2748801A (en) * 1953-10-22 1956-06-05 Tommy J Mccuistion Accumulators
US2873763A (en) * 1954-01-22 1959-02-17 Mercier Jean Sealing means for a slidable member in a pressure unit
US2780504A (en) * 1954-04-21 1957-02-05 Parker Appliance Co Accumulator piston
US3158180A (en) * 1960-12-28 1964-11-24 Greer Hydraulics Inc Blind shell piston accumulator
US3142318A (en) * 1962-12-18 1964-07-28 Mercier Jean Piston accumulator
DE1231979B (de) 1965-01-28 1967-01-05 Bosch Gmbh Robert Arbeitszylinder fuer Druckmittelanlagen
DE1803849A1 (de) * 1968-10-18 1970-05-27 Elmer Dipl Ing Adam Hydrospeicher mit schwimmendem Kolben
DE1939707C3 (de) * 1969-08-05 1975-05-07 Robert Bosch Gmbh, 7000 Stuttgart Arbeitszylinder für Druckmittelanlagen
US3863677A (en) * 1973-04-23 1975-02-04 Parker Hannifin Corp Accumulator with combination guide and seal ring
CA1180979A (en) * 1981-10-26 1985-01-15 Deere & Company Piston sealing arrangement
DE3917797A1 (de) * 1989-06-01 1990-12-06 Bosch Gmbh Robert Druckmittelspeicher, insbesondere fuer fahrzeug-bremsanlagen
DE3941241C2 (de) * 1989-12-14 2002-03-21 Continental Teves Ag & Co Ohg Kolbendruckspeicher, insbesondere für antriebsschlupfgeregelte Bremsanlagen, sowie Schaltanordnung dazu
DE4036399A1 (de) * 1990-11-15 1992-05-21 Teves Gmbh Alfred Hochdruckspeicher
US5311910A (en) * 1991-02-20 1994-05-17 Kabushiki Kaisha Showa Seisakusho Cap attachment structure for accumulator
US6267147B1 (en) * 2000-07-06 2001-07-31 Pratt & Whitney Canada Corp. Accumulator/oil tank for journal oil supply
US6460571B1 (en) * 2001-03-13 2002-10-08 Parker-Hannifin Corporation Crimped piston/membrane accumulator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2487512A (en) * 1946-01-10 1949-11-08 Automotive & Aircraft Hydrauli Cylinder and cylinder head construction

Also Published As

Publication number Publication date
DE10228701A1 (de) 2004-01-15
US20050224122A1 (en) 2005-10-13
JP2006508301A (ja) 2006-03-09
US7066208B2 (en) 2006-06-27
WO2004003392A1 (de) 2004-01-08
JP4437080B2 (ja) 2010-03-24
EP1516123A1 (de) 2005-03-23

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