EP1516123A1 - Hydrospeicher - Google Patents
HydrospeicherInfo
- Publication number
- EP1516123A1 EP1516123A1 EP03729952A EP03729952A EP1516123A1 EP 1516123 A1 EP1516123 A1 EP 1516123A1 EP 03729952 A EP03729952 A EP 03729952A EP 03729952 A EP03729952 A EP 03729952A EP 1516123 A1 EP1516123 A1 EP 1516123A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cover
- housing
- hydraulic accumulator
- longitudinal axis
- 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.)
- Granted
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
- 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 a piston accumulator, with a storage housing defining a longitudinal axis, which has at least one end a housing opening concentric to the longitudinal axis, which is closed by a cover which is surrounded by a radially inwardly deformed wall part of the storage housing surrounding it is positively secured against axial forces.
- Hydraulic accumulators of this type are commercially available and are widely used in connection with hydraulic systems.
- a piston accumulator of this type is sold, for example, by "Parker Hydraulics" under the trade name ACP Series Accumulator.
- Such hydraulic accumulators are characterized by comparatively low manufacturing costs, because the fastening of the cover closing the accumulator housing can be carried out simply and efficiently by forming a positive engagement between the cover and the wall part of the accumulator housing surrounding it, by the wall surrounding the cover, in the piston accumulator 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 circumference of the cover.
- the type of fastening of one or both housing covers of the known hydraulic accumulators which is advantageous in terms of simple and inexpensive production, leads to problems with regard to operating properties and leads to difficulties when installing such accumulators.
- the object of the invention is to create a hydraulic accumulator that is simple and inexpensive to produce, but is nevertheless distinguished by an improved connection between the accumulator housing and the housing cover.
- this object is achieved according to the invention in that at least one part of the housing opening and / or of the cover deformed transversely to the longitudinal axis is provided as a form-fitting securing against rotation of the cover relative to the longitudinal axis.
- the relevant housing cover is not only axially secured to the storage housing, but also by a further deformation on the storage housing and / or formed transversely to the longitudinal axis Cover is formed against rotation, which supports the cover against torques which are effective between it and the storage housing, the above-mentioned operating and / or installation problems are eliminated.
- the additional deformation required for the formation of the anti-rotation device can be carried out without difficulty during production, for example by means of an additional printing or pressing process, so that no significant increase in production costs has to be accepted.
- the anti-rotation device can have, for example, a flattened portion, which is worked into the circumferential annular surface of the cover in question and into which a wall part of the opening of the accumulator housing is pressed, in the case of a piston accumulator, for example, an end section of the cylinder tube.
- the arrangement can be such that several flattenings are provided distributed around the circumference of the cover in question. These can also be arranged so that they merge into one another to form a polygon shape.
- a toothing can be provided on the circumference of the cover, with which the wall of the opening of the accumulator housing, that is to say the wall of the cylinder tube in the case of a piston accumulator, can be pressed.
- a groove is incorporated into the circumference of the cover in question to form the anti-rotation device, which extends with a thread pitch along the circumference with respect to the longitudinal axis and into which a wall part of the opening of the storage housing protrudes radially inward, for example of Cylinder tube that can be pressed in.
- Such an embodiment is characterized by the possibility of particularly simple and cost-effective production, because, as will be explained in more detail below, when the cover in question is fastened, in addition to the rolling process which brings about the axial securing, only a further rolling or pressing tool along the Catch of the storage housing surrounding the lid must be applied, wherein when the tool overflows the spiral groove, which extends due to the thread pitch over an axial region of the lid, a bump-like inwardly projecting wall part is pressed into the spiral groove.
- FIG. 1 shows a greatly schematically simplified longitudinal section of a hydraulic accumulator designed as a piston accumulator according to the
- FIG. 2 shows a schematically simplified front view of the end of an exemplary embodiment of the hydraulic accumulator according to the invention in the form of a piston accumulator; 3 shows a section only showing the end region of the exemplary embodiment from FIG. 2 corresponding to the section line III-III from FIG. 2;
- FIG. 4 shows a side view of a housing cover of a further exemplary embodiment of the hydraulic accumulator according to the invention drawn on a larger scale compared to FIGS. 1 to 3, and FIG. 5 shows a sectional view drawn on a smaller scale compared to FIG. 4 only of the liquid-side end region of the installed cover of FIG. 4 containing embodiment.
- Fig. 1 shows a piston accumulator of known type
- Figs. 2 and 3 show a first embodiment of the hydraulic accumulator according to the invention
- Figs. 4 and 5 serve to illustrate a second exemplary embodiment of the hydraulic accumulator according to the invention
- are associated sealing elements each serve to seal between the housing cover and storage housing, omitted to simplify the illustration.
- All of the illustrated embodiments are piston accumulators in which a cylinder tube 1 is provided as the accumulator housing.
- steel is provided as the material for the cylinder tube 1 with a ductility suitable for the deformation by means of indenting or rolling.
- the cylinder tube 1 contains a piston 3, only shown in FIG. 1, as a separating element between the liquid side 5 and gas side 7 of the reservoir.
- the concentric to the longitudinal axis 9 opening of the cylinder tube 1 is closed at the end on the liquid side 5 by a circular housing cover 11.
- On the gas side 7, the opening of the cylinder tube 1 concentric with the longitudinal axis 9 is closed at the end by a housing cover 13.
- This has a central bore 15 for a gas valve.
- the cover 11 on the liquid side 5 also has a central bore 17 for establishing a connection with a hydraulic system.
- Each cover 11, 13 has in its end region facing the piston 3 an annular groove 19 machined into its circumference as a seat for a sealing element, not shown in the figures, for example an O-ring.
- Another annular groove 21 is incorporated into the circumference of the lid from the annular groove 19 axially offset towards the other end of the cover.
- This annular groove 21 serves to axially secure the cover 11, 13 in the cylinder tube 1, in that a positive engagement between the cylinder tube 1 and the annular groove 21 is formed by an indenting or rolling process, in which an outer notch 23 is formed on the circumference of the cylinder tube 1, by means of which an inwardly deformed annular bead 25 is generated which engages in the annular groove 21 ,
- the cover 11 has a flattening 27 in its outer end region, specifically on its axially outer end edge 29.
- the end section 31 of the cylinder tube 1 aligned with it is pressed into this flattening 27.
- the cover 11 which is axially secured by the engagement of the annular bead 25 in the annular groove 21 is thus additionally secured on the flattened portion 27 against rotation about the longitudinal axis 9.
- the cover 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, based on the longitudinal axis 9.
- a further notch 37 is formed on the outside of the cylinder tube 1 by a pressing-in or rolling process which is carried out on the cylinder tube 1 in the axial section overflowing with the spiral annular groove 35, by the wall material of the cylinder tube 1 as Hump 39 is pressed into the spiral annular groove 35.
- a bump 39 results from the fact that notching does not take place over the entire circumference of the cylinder tube 1, but only at the point at which the pressing-in or rolling tool overflows the spiral annular groove 35.
- the hump 39 which is only pressed in at this point forms a discontinuity which, because of the inclined surfaces adjoining the hump 39 due to the thread pitch of the spiral annular groove 35, acts as an anti-rotation device.
- the That part of the spiral annular groove 35 which does not contain the bump 39 remains free, as can be seen at 41, where the end of the annular groove 35 which is adjacent to the end edge 29 can be seen.
- a toothing for example in the form of knurling
- a plurality of flattened portions can also be provided on the circumference of the cover in question, it being possible for any design to be provided which leads to a non-circular shape on the cover in question, for example 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)
Abstract
Description
Claims
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 true EP1516123A1 (de) | 2005-03-23 |
EP1516123B1 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 (de) |
EP (1) | EP1516123B1 (de) |
JP (1) | JP4437080B2 (de) |
DE (1) | DE10228701A1 (de) |
WO (1) | WO2004003392A1 (de) |
Families Citing this family (8)
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 |
CN102787149B (zh) | 2006-05-01 | 2015-07-15 | 密歇根州立大学董事会 | 处理木质纤维素生物质的方法 |
EP2165081B1 (de) * | 2007-06-14 | 2015-02-18 | Limo-Reid, Inc. | Kompakter hydraulischer speicher |
EP2630399A2 (de) | 2010-09-22 | 2013-08-28 | Limo-Reid, Inc. | Ultraleichter und kompakter akkumulator |
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 (de) * | 2022-02-15 | 2023-08-16 | Parker Hannifin EMEA S.à.r.l. | Lagerbehälter für gasförmigen wasserstoff |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2487512A (en) * | 1946-01-10 | 1949-11-08 | Automotive & Aircraft Hydrauli | Cylinder and cylinder head construction |
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 |
-
2002
- 2002-06-27 DE DE10228701A patent/DE10228701A1/de not_active Withdrawn
-
2003
- 2003-04-30 US US10/512,642 patent/US7066208B2/en not_active Expired - Fee Related
- 2003-04-30 JP JP2004516553A patent/JP4437080B2/ja not_active Expired - Lifetime
- 2003-04-30 WO PCT/EP2003/004499 patent/WO2004003392A1/de active Application Filing
- 2003-04-30 EP EP03729952.6A patent/EP1516123B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO2004003392A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP1516123B1 (de) | 2017-01-04 |
DE10228701A1 (de) | 2004-01-15 |
JP2006508301A (ja) | 2006-03-09 |
JP4437080B2 (ja) | 2010-03-24 |
US20050224122A1 (en) | 2005-10-13 |
US7066208B2 (en) | 2006-06-27 |
WO2004003392A1 (de) | 2004-01-08 |
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