EP0825943A1 - Einrichtung zum umstellen von weichen - Google Patents
Einrichtung zum umstellen von weichenInfo
- Publication number
- EP0825943A1 EP0825943A1 EP96910853A EP96910853A EP0825943A1 EP 0825943 A1 EP0825943 A1 EP 0825943A1 EP 96910853 A EP96910853 A EP 96910853A EP 96910853 A EP96910853 A EP 96910853A EP 0825943 A1 EP0825943 A1 EP 0825943A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cylinder
- hydraulic
- valves
- pressure
- 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
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/04—Fluid-pressure devices for operating points or scotch-blocks
- B61L5/045—Fluid-pressure devices for operating points or scotch-blocks using electrically controlled fluid-pressure operated driving means
Definitions
- the invention relates to a device for switching switches with a plurality of hydraulic cylinder piston units which are connected in parallel or in series and which are arranged offset in the longitudinal direction of the rail and are connected to a hydraulic drive unit.
- a device for switching switches with a plurality of hydraulic cylinder piston units which are connected in parallel or in series and which are arranged offset in the longitudinal direction of the rail and are connected to a hydraulic drive unit.
- it is known to carry out the connection of the individual closures with a mechanical linkage.
- Such a mechanical connection of a plurality of actuating devices or closures requires a relatively large amount of space and a large number of different individual parts.
- the packability of the tongue device is impaired, and an unfavorable one-sided mass distribution on a switch is also caused.
- a hydraulic actuating device is already known from EP-A2 480 303, in which a plurality of individual adjusting cylinders are controlled via a hydraulic station.
- Different circuit arrangements for the series connection or the parallel connection of a plurality of such hydraulic actuating devices are known from DE-B2 1952823.
- the invention now aims to provide a device of the type mentioned at the outset, which can easily be retrofitted into existing switch devices and in which the effort for a correspondingly complex control can be dispensed with.
- the invention aims at ensuring a high degree of reliability and failure resistance despite a simple construction requiring only a small number of different components.
- the desired displacement position should be reliably achieved even with low fluid losses and without complex volumetric control of the hydraulic drive.
- the device according to the invention should be able to be used in a simple manner as an exchange for mechanical devices of known construction in order to improve the packability of the tongue device and to avoid the one-sided mass distribution on the switch.
- the task according to the invention is essentially that the hydraulic cylinder piston units each contain a floating piston or plunger guided between two work spaces and that the floating pistons or plungers cooperate with pusher valves within their displacement path.
- the control of different adjustment positions along the rail path is achieved by means of the lockable or switchable connection by means of the push-open valves. Depending on the piston or plunger position, this connection is opened or interrupted. If the connection is interrupted, the target position of the actuating device is reached exactly.
- Such a hydraulic actuating device with floating pistons or plungers thus, in addition to its compact design, also easily adapts to the respectively required requirements.
- a separate, advantageously reversible hydraulic drive unit fluid is displaced into the work spaces of identically constructed cylinder piston units during a changeover process, whereby the coupling with neighboring cylinder piston units can be achieved directly.
- a device can be constructed with an identically constructed cylinder-piston unit of particularly simple construction, only corresponding hydraulic lines being provided for the connection between adjacent cylinder-piston units. The interconnection is carried out in such a way that adjacent cylinder piston units are adjusted in the same direction when medium is pressed out of the hydraulic drive unit.
- the design according to the invention is developed in such a way that the push-open valves are arranged in a bore in the piston or plunger connected to the two working spaces, the end or ring surfaces of the piston or plunger respectively immersing in the opposite working spaces having an identical cross-sectional area can.
- a floating piston or plunger represents a structurally particularly simple, reliable and compact structural unit, which can be arranged at the desired location with a small space requirement.
- a plurality of identical cylinder-piston units of this type can be provided, the main advantage being that identical cross-sectional areas are acted upon by pressure medium, which results in a synchronous movement.
- the design can advantageously be such that the piston or plunger of the pump element has a bearing, in particular a sliding block with an annular groove or a bearing eye between its free ends, and that the bearing consists of an opening of the cylinder is protruding or arranged between two fixed cylinders.
- a particularly simple and reliable compact design is possible, which is also suitable for retrofitting in a simple manner.
- the annular surface of a piston can, as already mentioned above, ensure the required identical working cross section in both directions of displacement.
- a particularly simple construction is achieved in this case in that the piston is rigidly connected to a continuous piston rod which penetrates the cylinder and that the piston rod or the cylinder is fixed in place.
- the entire system is advantageously set at a predetermined excess pressure in relation to the atmospheric pressure.
- temperature fluctuations which could lead to a change in pressure, can be buffered, for which purpose the design is advantageously made such that the working spaces of the cylinder-piston units are connected to a pressure accumulator via pressure relief valves.
- the pressure relief valves are designed as controllable check valves, such controllable check valves resulting in a high degree of operational reliability. At high operating temperatures, medium is pressed out into the pressure accumulator by opening the check valves, whereas when the pressure drops, the pressure flows into the system via the check valves in turn can be made available.
- the design can be made in a particularly simple manner so that a pressure-controlled directional control valve is connected to the pump work rooms, which at Fall below a predetermined pressure in the closed position, which ensures that in this case all actuating devices are blocked. Blocking of the actuating devices would be signaled by the mechanical actuator and the corresponding control devices for the mechanical actuator at the corresponding location, so that the damage can be remedied immediately.
- FIG. 1 shows a plan view of a partial area of a rail switch
- FIG. 2 shows a detail of the connection of a cylinder piston unit with a mechanical slide rod
- FIG. 3 shows a schematic partial view of the illustration according to FIG. 2
- FIG. 4 shows an enlarged illustration of the hydraulic cylinder piston unit partly in section
- Fig. 5 is a plan view of the illustration according to Fig. 4
- Fig. 6 is a schematic representation of the hydraulic connection of the individual cylinder piston units
- Fig. 7 shows an alternative embodiment of cylinder piston units for the device according to the invention
- Fig. 8 is a schematic view of the in a switch built training according to FIG. 7.
- Fig. 1 rails 1 are schematically indicated, which are connected to sleepers 2.
- tongue rails 3 are provided, which can be brought into their respective position via a separate reversible hydraulic drive unit, which is schematically designated by 4.
- the hydraulic drive unit 4 acts on the tongue rails 3 via a hydraulic linkage 5 and the hydraulic cylinder piston units 6.
- Several hydraulic cylinder piston units 6 can be seen in the course of the rail, which are coupled to one another. In the illustration in FIG. 2, the hydraulic cylinder piston units 6 with the slide rods 7 can be seen more clearly.
- the cylinder-piston units 6 have a sliding block 8, in which a pin 9 of the slide rod 7 engages.
- FIG. 3 the type of fixing the hydraulic cylinder piston units 6 on the threshold 2 is illustrated. The determination is made via a stop plate 10, which is fixed on the threshold 2. The hydraulic cylinder piston units 6 require relatively little space, so that the plugging of the substructure is not impaired.
- FIGS. 4 and 5 The operation of the hydraulic cylinder piston units and their preferred embodiment is explained in more detail in FIGS. 4 and 5. 4 and 5, a plunger 11 having hydraulic cylinder-piston unit 6 can be seen.
- the plungers 11 plunge into the respective working spaces 13 of the hydraulic cylinder piston units via seals 12, and when the plunger 11 is displaced in one of the directions of the double arrow 14, medium is pressed out of the corresponding working space 13.
- the hydraulic connections open to the outer openings 15 in the respective work space 13.
- the sliding block is again designated 8, via which the mechanical coupling takes place.
- a rubber sleeve 16 is also provided.
- the device according to FIG. 4 can be seen in plan view.
- the same cross sections are effective on both sides.
- the cylinders of the hydraulic cylinder-piston unit are fixed via bolts 17 on the angle plate 10.
- the working spaces 13 are connected to one another and to a separate hydraulic drive unit 4 via hydraulic lines 5, for example in parallel with the hydraulic drive unit 4, the connection being regulated in such a way that when the first hydraulic cylinder piston unit is displaced, all the other hydraulic cylinder piston units are connected 6 are coupled to the same displacement.
- hydraulic lines 5 contain a series of valves in order to keep the pressure constant under operating conditions and to be able to reliably detect impermissible situations.
- a spring-loaded valve 20 is provided, which is acted upon by the hydraulic pressure in the lines 5.
- a pressure accumulator 21 is also provided, which is connected to the respective hydraulic lines 5 via overflow valves or check valves 22.
- the overflow valves or non-return valves are switched such that fluid is pressed into the accumulator 21 when the pressure rises due to thermal expansion and, conversely, fluid is pressed back into the lines 5 from the hydraulic accumulator 21 when the pressure drops slightly.
- the spring-loaded safety valves 20 are only effective in the event of a leak and a corresponding pressure drop in the accumulator 21.
- FIG. 7 shows a modified design of the hydraulic cylinder-piston units. Again, for the purpose of loading the same work surfaces with fluid, the design is such that the same cross sections of a piston come into effect in the two work spaces 13.
- the piston 23 is connected to a piston rod 24 and in the present case the ring surface is effective or acted upon. Otherwise, the same components are found in this embodiment as in the embodiment in FIG. 6, and the same reference numerals have been used here again.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
- Fluid-Pressure Circuits (AREA)
- Selective Calling Equipment (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Keying Circuit Devices (AREA)
- Vehicle Body Suspensions (AREA)
- Pens And Brushes (AREA)
- Motor Or Generator Current Collectors (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Jib Cranes (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Braking Arrangements (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Lock And Its Accessories (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9630140T SI0825943T1 (en) | 1995-05-03 | 1996-05-02 | Points control device |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0075995A AT403462B (de) | 1995-05-03 | 1995-05-03 | Einrichtung zum umstellen von weichen |
AT759/95 | 1995-05-03 | ||
AT75995 | 1995-05-03 | ||
PCT/AT1996/000087 WO1996034786A1 (de) | 1995-05-03 | 1996-05-02 | Einrichtung zum umstellen von weichen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0825943A1 true EP0825943A1 (de) | 1998-03-04 |
EP0825943B1 EP0825943B1 (de) | 2000-01-19 |
Family
ID=3499043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96910853A Expired - Lifetime EP0825943B1 (de) | 1995-05-03 | 1996-05-02 | Einrichtung zum umstellen von weichen |
Country Status (14)
Country | Link |
---|---|
US (1) | US6056244A (de) |
EP (1) | EP0825943B1 (de) |
AT (2) | AT403462B (de) |
AU (1) | AU703598B2 (de) |
CA (1) | CA2220083C (de) |
DE (1) | DE59604244D1 (de) |
DK (1) | DK0825943T3 (de) |
ES (1) | ES2141492T3 (de) |
GR (1) | GR3033037T3 (de) |
NO (1) | NO975025L (de) |
PL (1) | PL180128B1 (de) |
PT (1) | PT825943E (de) |
RU (1) | RU2143360C1 (de) |
WO (1) | WO1996034786A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT403463B (de) * | 1995-12-14 | 1998-02-25 | Vae Ag | Einrichtung zum sichern der endlagen von weichen- und kreuzungsstellantrieben |
IT1298019B1 (it) * | 1997-10-22 | 1999-12-20 | Sasib Railway Spa | Cassa di manovra per scambi ferroviari, ferrotranviari, o simili. |
AT406038B (de) * | 1997-12-17 | 2000-01-25 | Vae Ag | Einrichtung zum unterstützen der verschiebebewegung und zum elastischen verriegeln von beweglichen weichenteilen |
AT407369B (de) * | 1998-04-07 | 2001-02-26 | Vae Ag | Einrichtung zum umstellen der beweglichen teile von schienenweichen oder -kreuzungen |
AT5757U1 (de) * | 2001-07-31 | 2002-11-25 | Vae Eisenbahnsysteme Gmbh | Einrichtung zum umstellen von weichen |
AT411350B (de) * | 2002-08-13 | 2003-12-29 | Vae Eisenbahnsysteme Gmbh | Weichenantrieb für bewegliche herze |
EP1459954B1 (de) * | 2003-03-21 | 2006-06-14 | Alcatel | Weichenantriebssystem |
AT6379U3 (de) * | 2003-05-09 | 2005-06-27 | Vae Eisenbahnsysteme Gmbh | Einrichtung zum fernüberwachen von weichenantrieben |
ITFI20030296A1 (it) * | 2003-11-19 | 2005-05-20 | Ge Transp Systems S P A | Cassa di manovra per scambi ferroviari |
AT502042B1 (de) * | 2005-05-18 | 2007-01-15 | Vae Gmbh | Vorrichtung zur endlagenprüfung von beweglichen teilen einer schienenweiche |
AT507216B1 (de) * | 2008-09-11 | 2010-03-15 | Vae Eisenbahnsysteme Gmbh | Vorrichtung zum festlegen einer weichenstelleinrichtung an backenschienen einer schienenweiche |
EP2418135B1 (de) * | 2010-07-22 | 2013-04-17 | ALSTOM Transport SA | Methode und Hydrauliksteuereinheit für Hydraulikstelleinrichtungen in Antrieben von Eisenbahnweichen |
DE202010008526U1 (de) * | 2010-09-14 | 2010-12-30 | Contec Gmbh Transportation Systems | Betonschwelle |
CN102951181B (zh) * | 2012-11-16 | 2015-08-19 | 北京中铁通电务技术开发有限公司 | 一种轨枕式电液转辙机 |
US20210025115A1 (en) * | 2016-09-12 | 2021-01-28 | Dilson dos Santos Rodrigues | Saborage-resistant switch device for moving railroad switch points |
CN112249086B (zh) * | 2020-10-17 | 2021-09-03 | 西安交通大学 | 一种矿用液压增力一体化直驱转辙机 |
CN112727831A (zh) * | 2021-01-04 | 2021-04-30 | 北京全路通信信号研究设计院集团有限公司 | 一种电液转辙机用液压动力单元 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1910070B2 (de) * | 1969-02-28 | 1973-08-16 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Elektrohydraulischer antrieb zum umstellen von auffahrbaren und nicht auffahrbaren weichen in eisenbahnanlagen |
CH520009A (de) * | 1970-06-16 | 1972-03-15 | Int Standard Electric Corp | Elektrohydraulischer Antrieb zum Umstellen von auffahrbaren und nichtauffahrbaren Weichen in Eisenbahnanlagen |
DE2144564A1 (de) * | 1971-09-06 | 1973-03-15 | Siemens Ag | Weichenstellsystem fuer eisenbahnanlagen mit schlankweichen |
IT1242226B (it) * | 1990-10-10 | 1994-03-03 | Sasib Spa | Dispositivo di manovra per deviatoi ferroviari, in particolare per linee ad alta velocita' |
US5417392A (en) * | 1993-10-25 | 1995-05-23 | Wyatt; Michael L. | Hydraulic switch stand with rail pump charging and hydraulic lock |
ATE172416T1 (de) * | 1994-06-24 | 1998-11-15 | Vae Ag | Einrichtung zum umstellen von weichen |
-
1995
- 1995-05-03 AT AT0075995A patent/AT403462B/de not_active IP Right Cessation
-
1996
- 1996-05-02 PL PL96323107A patent/PL180128B1/pl unknown
- 1996-05-02 ES ES96910853T patent/ES2141492T3/es not_active Expired - Lifetime
- 1996-05-02 CA CA002220083A patent/CA2220083C/en not_active Expired - Lifetime
- 1996-05-02 RU RU98104705A patent/RU2143360C1/ru active
- 1996-05-02 PT PT96910853T patent/PT825943E/pt unknown
- 1996-05-02 WO PCT/AT1996/000087 patent/WO1996034786A1/de active IP Right Grant
- 1996-05-02 DK DK96910853T patent/DK0825943T3/da not_active Application Discontinuation
- 1996-05-02 AU AU53927/96A patent/AU703598B2/en not_active Ceased
- 1996-05-02 US US08/945,292 patent/US6056244A/en not_active Expired - Lifetime
- 1996-05-02 DE DE59604244T patent/DE59604244D1/de not_active Expired - Lifetime
- 1996-05-02 AT AT96910853T patent/ATE188928T1/de active
- 1996-05-02 EP EP96910853A patent/EP0825943B1/de not_active Expired - Lifetime
-
1997
- 1997-10-31 NO NO975025A patent/NO975025L/no not_active Application Discontinuation
-
2000
- 2000-03-22 GR GR20000400723T patent/GR3033037T3/el unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9634786A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2220083A1 (en) | 1996-11-07 |
AU5392796A (en) | 1996-11-21 |
AU703598B2 (en) | 1999-03-25 |
PL180128B1 (pl) | 2000-12-29 |
DE59604244D1 (de) | 2000-02-24 |
US6056244A (en) | 2000-05-02 |
RU2143360C1 (ru) | 1999-12-27 |
NO975025L (no) | 1998-01-02 |
GR3033037T3 (en) | 2000-08-31 |
PT825943E (pt) | 2000-06-30 |
ATE188928T1 (de) | 2000-02-15 |
ES2141492T3 (es) | 2000-03-16 |
EP0825943B1 (de) | 2000-01-19 |
DK0825943T3 (da) | 2000-07-03 |
WO1996034786A1 (de) | 1996-11-07 |
NO975025D0 (no) | 1997-10-31 |
CA2220083C (en) | 2001-02-20 |
ATA75995A (de) | 1997-07-15 |
PL323107A1 (en) | 1998-03-16 |
AT403462B (de) | 1998-02-25 |
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