EP1086312A1 - Kolbenspeicher für einem verbraucher in einer hydraulikanlage zuzuführendes druckfluid - Google Patents
Kolbenspeicher für einem verbraucher in einer hydraulikanlage zuzuführendes druckfluidInfo
- Publication number
- EP1086312A1 EP1086312A1 EP99927842A EP99927842A EP1086312A1 EP 1086312 A1 EP1086312 A1 EP 1086312A1 EP 99927842 A EP99927842 A EP 99927842A EP 99927842 A EP99927842 A EP 99927842A EP 1086312 A1 EP1086312 A1 EP 1086312A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cylinder
- switching
- cylinder cover
- plunger
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D7/00—Hopper cars
- B61D7/14—Adaptations of hopper elements to railways
- B61D7/16—Closure elements for discharge openings
- B61D7/24—Opening or closing means
- B61D7/28—Opening or closing means hydraulic or pneumatic
-
- 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
- F15B1/027—Installations or systems with accumulators having accumulator charging devices
-
- 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
- F15B2201/41—Liquid ports
- F15B2201/411—Liquid 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
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/415—Gas ports
- F15B2201/4155—Gas ports having valve means
Definitions
- Piston accumulator for pressure fluid to be supplied to a consumer in a hydraulic system
- the invention relates to a piston accumulator for pressure fluid to be supplied to a consumer in a hydraulic system, in particular for the hydraulic actuation of the unloading device in non-self-propelled vehicles for bulk goods, with a piston which is arranged in a cylinder and divides the cylinder into an oil space and a gas space.
- a switching plunger which is axially movable in the cylinder and which cooperates with its inner end with the piston and is guided with its outer end in the cylinder cover delimiting the gas space, and with a switch valve which can be actuated by the outer end of the switching plunger and serves as a switch-off device for the charging fluid flow and which is connected to the connection for the charging fluid flow in the oil chamber via a bypass pipeline which serves as a switchable bypass of the piston accumulator.
- a piston accumulator of this type is known from DE 91 13 007 U1, which is provided for actuating the bulk material unloading device in railway wagons.
- the hydraulic system provided in such wagons has at least one hydraulic pump driven by a wheel set in question, which pumps a charging fluid flow into the piston accumulator while the wagon is moving. If the set operating pressure in the accumulator is reached, the switch-off device causes the charging fluid flow to be diverted without pressure via the bypass pipeline to the tank connection of the hydraulic system and thus flows into the fluid reservoir.
- the invention has for its object to provide a piston accumulator of the type mentioned, which is distinguished by a particularly simple and inexpensive construction.
- this object is achieved according to the invention in that the outer end of the switching plunger is guided outwards by sealing through the cylinder cover and is accessible on the outside of the cylinder as an actuating element for the switching valve and that this is on the outside of the cylinder cover detachably attachable unit forms.
- the cylinder cover itself is designed as a valve housing of the switching valve, which means that transverse bores for the valve connections and internal control surfaces must be present in the cylinder cover, which leads to a corresponding complication. tion and increases the cost, according to the invention a simply designed cylinder cover, which only ensures the gas-tight closure of the cylinder, is required.
- a commercially available directional control valve can be used on the outside.
- the advantage of this is also that it is particularly easy to maintain, because when the switching valve is replaced, it is not like the known one Piston accumulator which needs to be replaced with a cylinder cover, which represents an expensive component, but only the switching valve attached on the outside, so that a considerable reduction in maintenance costs is also achieved.
- the switching plunger is guided so as to be longitudinally displaceable at its inner end provided for the interaction with the piston in a traverse located in the gas space and fastened to the inner wall of the cylinder.
- This inner guidance opens up the possibility of designing the part of the cylinder defining the gas space in a considerable overall length, as a result of which the volume of the gas space inside the piston accumulator can be very large compared to the stroke volume of the piston in the oil space.
- Figure 1 is a schematic block diagram of the piston accumulator with associated hydraulic circuit.
- Fig. 2 shows a longitudinal section of the piston accumulator
- Fig. 3 is a partial longitudinal section compared to Fig. 2 drawn on a larger scale, in which a part of the cylinder cover is shown with associated components.
- the cylinder of a piston accumulator is denoted by 1, the interior of which is divided into an oil chamber 5 and a gas chamber 7 by a separating piston 3 arranged overhung.
- 2 shows the piston 3 in its end position lying against the cylinder base 9, which corresponds to the operating state in which the oil chamber 5 is not charged by a supplied charging fluid flow, the volume of the oil chamber 5 under the influence of the compressed gas in the gas chamber 7 (at the
- Embodiment N 2 therefore practical by moving the piston 3
- the cylinder base 9 has a connection 1 1, to which the pressure fluid from the associated hydraulic pump 1 3 can be supplied via a check valve 1 5.
- a second connection 1 7 on the cylinder base 9 enables the working fluid flow to be discharged via a check valve 19 to the consumer concerned, ie in the special case mentioned to the working cylinder of the associated bulk material unloading device.
- a switching plunger 25 in the form of a relatively long round rod in the cylinder 1 is axially longitudinally displaceable.
- a partition wall 29 fastened to a rib 27 on the inner wall of the cylinder 1 and having a gas passage 31 forms a guide for its axial movement at the inner end region of the switching plunger 25.
- the switching plunger 25 is biased by its spring force, which in the exemplary embodiment shown is formed by a plate spring assembly 33 (see in particular FIG. 3), for its end position advanced against the separating piston 3, which is shown in FIG. 2, in which the Switch plunger 25 protrudes with its relevant end 35 beyond the partition wall 29 by a distance which is adapted to the actuation path of the actuator 37 of the switching valve 23.
- the dividing wall 29 forms a mechanical stop for limiting the lifting movement of the separating piston 3 caused by the charging fluid flow, which, when in contact with the dividing wall 29 in cooperation with the end 35 of the switching plunger 25, counteracts the spring force of the plate spring assembly 33 for actuating the switching valve 23 shifts (to the right in Fig. 2).
- the outer end of the switching plunger 25 opposite the partition 29 extends through a cylinder cover 39 screwed into the relevant end of the cylinder 1 as the end of the gas space 7, with a set of seals 41 for Forming a seal with respect to the bore 45 of the cylinder cover 39 cooperates with a tapered section 43 of the switching plunger 25.
- This tapered section 43 extends through a dirt deflector 47 into an extension 49 of the bore 45, in which the switching plunger 25 forms a shoulder surface 51 in a knife passes even further tapered, end-side shaft part 53.
- the extension 49 accommodates the plate spring assembly 33 surrounding the shaft part 53, which is supported on the one hand on the shoulder surface 51 of the switching plunger 25 and on the other hand on a threaded sleeve 57 screwed into an end internal thread 55 of the bore extension 49.
- a filling valve, which can only be seen in FIG. 2, for supplying the compressed gas to the gas space 7 is designated by 59.
- the end of the shaft part 53 of the switching plunger 25 forms a coupling member 61 for the articulated connection with the actuator 37 of the switching valve 23.
- this is a commercially available directional valve of the slide type, which acts as a removable unit can be directly unscrewed from a base plate 72, which is connected to the cylinder cover 30 via a holding frame 63 and a screw connection 65.
- the bypass pipeline 21 is connected to the switching valve 23 which, when actuated, ie when the switching plunger 23 displaces the actuator 37 against the acting spring force (to the right in the drawing), that prevailing in the pipeline 21 Turns on the boost pressure of the oil chamber 5 to a control line 67.
- the pressure of the control line 67 releases a hydraulically unlockable check valve 69 connected to it.
- the check valve 69 is switched so that it releases a fluid connection from the bypass pipeline 21 to the tank connection 71 in the unlocked state via a throttle 70 connected upstream of it.
- the piston 3 acts on the switching plunger 25 and moves it against the acting spring force to actuate the switching valve 23 and accordingly Chend the charge pressure prevailing in the bypass pipe 21 to the control line 67, via the unlocked check valve 69 and the upstream throttle 70, the pressure-free discharge of the charging fluid flow takes place, so that the piston accumulator is hydraulically bridged.
- the switching valve 23 returns to the switching state in which the pressure drops in the oil chamber 5 when the piston 3 moves away from the end 35 of the switching plunger 25 connected to the pipeline 21 is blocked and the control line 67 is connected to the tank connection 71, ie is depressurized.
- the check valve 69 is no longer unlocked, and the bypass of the piston accumulator via the bypass pipeline 21 is prevented, so that the charging fluid flow for charging the piston accumulator can become effective again.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Pressure Circuits (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19827363A DE19827363A1 (de) | 1998-06-19 | 1998-06-19 | Kolbenspeicher für einem Verbraucher in einer Hydraulikanlage zuzuführendes Druckfluid |
DE19827363 | 1998-06-19 | ||
PCT/EP1999/003816 WO1999067536A1 (de) | 1998-06-19 | 1999-06-02 | Kolbenspeicher für einem verbraucher in einer hydraulikanlage zuzuführendes druckfluid |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1086312A1 true EP1086312A1 (de) | 2001-03-28 |
EP1086312B1 EP1086312B1 (de) | 2003-05-21 |
Family
ID=7871409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99927842A Expired - Lifetime EP1086312B1 (de) | 1998-06-19 | 1999-06-02 | Kolbenspeicher für einem verbraucher in einer hydraulikanlage zuzuführendes druckfluid |
Country Status (9)
Country | Link |
---|---|
US (1) | US6332477B1 (de) |
EP (1) | EP1086312B1 (de) |
JP (1) | JP2002519590A (de) |
AT (1) | ATE241087T1 (de) |
DE (2) | DE19827363A1 (de) |
DK (1) | DK1086312T3 (de) |
ES (1) | ES2200523T3 (de) |
PT (1) | PT1086312E (de) |
WO (1) | WO1999067536A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10244705B3 (de) * | 2002-09-24 | 2004-01-08 | Gesellschaft für technische Entwicklungen mbH | Vorrichtung zum Reduzieren und Vergleichmäßigen des Drucks eines viskosen Mediums |
EP2058527A3 (de) * | 2007-11-08 | 2012-05-30 | Parker-Hannifin Corporation | Leichter, reparierbarer Hochdruckkolbenspeicher aus Verbundwerkstoff mit Gleitflansch |
CN101435450B (zh) * | 2007-11-13 | 2011-09-07 | 中国国际海运集装箱(集团)股份有限公司 | 液压单元、脚轮组件、及集装箱移动装置和方法 |
EP2060797A3 (de) | 2007-11-13 | 2012-11-14 | Parker-Hannifin Corporation | Leichter, reparierbarer, mehrteiliger Hochdruckkolbenspeicher mit Zugstange |
US9127661B2 (en) | 2010-10-25 | 2015-09-08 | Hamilton Sundstrand Corporation | Bootstrap accumulator system with telescoping actuator cylinder |
ITBO20120233A1 (it) * | 2012-04-27 | 2013-10-28 | Magneti Marelli Spa | Servocomando idraulico di un cambio servocomandato |
CN105604741B (zh) * | 2016-03-14 | 2018-01-12 | 武汉科技大学 | 二甲醚发动机预混压燃燃烧系统阀门开度控制装置 |
US10954966B2 (en) | 2017-10-25 | 2021-03-23 | Raytheon Company | Bootstrap accumulator containing integrated bypass valve |
CA3166177A1 (en) * | 2019-12-27 | 2021-07-01 | Performance Pulsation Control, Inc. | Bladder saver device |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2743741A (en) * | 1952-09-29 | 1956-05-01 | Techron Ltd | Hydraulic accumulator |
US2797708A (en) * | 1953-06-02 | 1957-07-02 | Gen Motors Corp | Accumulator |
US3043341A (en) * | 1957-07-12 | 1962-07-10 | Loewy Eng Co Ltd | Hydraulic accumulator |
DE1188247B (de) * | 1959-10-17 | 1965-03-04 | Friedrich Stuebbe | Druckmittelakkumulator fuer den hydraulischen Antrieb von Spritzgiessmaschinen, Werkzeugmaschinen od. dgl. |
FR1297881A (fr) * | 1961-05-26 | 1962-07-06 | Garniture d'étanchéité | |
DE1185025B (de) * | 1962-06-13 | 1965-01-07 | Montan Hydraulik G M B H & Co | Druckoelspeicher fuer hydraulische Einrichtungen mit Steuerung durch ein Ventil |
US3979910A (en) * | 1973-04-16 | 1976-09-14 | Canada Wire And Cable Limited | Closed circuit hydraulic control system |
US3901279A (en) * | 1974-01-30 | 1975-08-26 | Karl Schnell | Filling apparatus for pasty media, particularly for sausage meat |
JPS51133631A (en) * | 1975-05-16 | 1976-11-19 | Hitachi Ltd | Dash pot |
DE3048651A1 (de) * | 1980-12-23 | 1982-07-15 | Gesellschaft für Hydraulik-Zubehör mbH, 6603 Sulzbach | "druckbehaelter, insbesondere hydropneumatischer speicher" |
US4343477A (en) * | 1981-02-04 | 1982-08-10 | Combustion Engineering, Inc. | Sealing device with thermal expansion pressure accumulator |
US4457348A (en) * | 1982-07-07 | 1984-07-03 | Mueller Martin J | Food product fill pump |
DE3705642A1 (de) * | 1986-07-02 | 1988-01-14 | Man Nutzfahrzeuge Gmbh | Energiespeicher- und abgabeeinrichtung |
DE3744179A1 (de) * | 1987-12-24 | 1989-07-06 | Integral Hydraulik Co | Montage- und fuellvorrichtung fuer einen hydropneumatischen kolbenspeicher |
DE9113007U1 (de) * | 1991-10-19 | 1991-12-19 | Bolenz & Schäfer Maschinenfabrik GmbH, 35216 Biedenkopf | Zylinder-Druckspeicher mit Lade-Ölstromabschalteinrichtung in einer Hydraulikanlage |
US6116585A (en) * | 1997-08-11 | 2000-09-12 | Mannesmann Sachs Ag | Pressure holder with an enclosed gas mass |
-
1998
- 1998-06-19 DE DE19827363A patent/DE19827363A1/de not_active Withdrawn
-
1999
- 1999-06-02 US US09/601,134 patent/US6332477B1/en not_active Expired - Fee Related
- 1999-06-02 ES ES99927842T patent/ES2200523T3/es not_active Expired - Lifetime
- 1999-06-02 DK DK99927842T patent/DK1086312T3/da active
- 1999-06-02 EP EP99927842A patent/EP1086312B1/de not_active Expired - Lifetime
- 1999-06-02 JP JP2000556159A patent/JP2002519590A/ja active Pending
- 1999-06-02 PT PT99927842T patent/PT1086312E/pt unknown
- 1999-06-02 DE DE59905659T patent/DE59905659D1/de not_active Expired - Fee Related
- 1999-06-02 AT AT99927842T patent/ATE241087T1/de not_active IP Right Cessation
- 1999-06-02 WO PCT/EP1999/003816 patent/WO1999067536A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9967536A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999067536A1 (de) | 1999-12-29 |
ATE241087T1 (de) | 2003-06-15 |
EP1086312B1 (de) | 2003-05-21 |
DE59905659D1 (de) | 2003-06-26 |
PT1086312E (pt) | 2003-10-31 |
ES2200523T3 (es) | 2004-03-01 |
JP2002519590A (ja) | 2002-07-02 |
US6332477B1 (en) | 2001-12-25 |
DE19827363A1 (de) | 1999-12-23 |
DK1086312T3 (da) | 2003-09-15 |
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