EP0779197B1 - Dispositif de sécurité de positions de fin de course de commandes de positionnement pour aiguillages et croisements - Google Patents

Dispositif de sécurité de positions de fin de course de commandes de positionnement pour aiguillages et croisements Download PDF

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Publication number
EP0779197B1
EP0779197B1 EP96890186A EP96890186A EP0779197B1 EP 0779197 B1 EP0779197 B1 EP 0779197B1 EP 96890186 A EP96890186 A EP 96890186A EP 96890186 A EP96890186 A EP 96890186A EP 0779197 B1 EP0779197 B1 EP 0779197B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
piston
locking members
cylinder
spring
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
EP96890186A
Other languages
German (de)
English (en)
Other versions
EP0779197A1 (fr
Inventor
Herbert Dipl.-Ing. Achleitner
Gerald Durchschlag
Josef Hörtler
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.)
Voestalpine Railway Systems GmbH
Original Assignee
Voestalpine VAE 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 Voestalpine VAE GmbH filed Critical Voestalpine VAE GmbH
Publication of EP0779197A1 publication Critical patent/EP0779197A1/fr
Application granted granted Critical
Publication of EP0779197B1 publication Critical patent/EP0779197B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B61L5/10—Locking mechanisms for points; Means for indicating the setting of points

Definitions

  • the invention relates to a device for securing the End positions for hydraulic actuators for turnout or Intersection parts in which at least one fluid can be applied Piston cooperates in its end position with a valve.
  • FIG. 1 Facilities of the type mentioned can either with a pressure accumulator or a hydraulic pump.
  • a mechanical drive can be provided, whereby the adjustment movement of a hydraulic cylinder piston unit is recorded, depending on the direction of adjustment displaced volume of this acting as a hydraulic pump first device further hydraulic actuators supplied is, so that a corresponding synchronous shift of Switch parts, especially long switch tongues over a large one Length of the same, can be made.
  • the adjustment path of such hydraulic drives by stops be limited, with preference when reaching such Stop an opening valve is actuated. Pressure and temperature fluctuations, which extend over a longer period of time, can be substantially balanced with such valves become.
  • EP 603 156 A1 a locking device for a Switch lock, in which two movable relative to each other Parts in a non-positive in at least one direction of movement Position are movable.
  • a conventional hydraulic actuator for switches or Crossing parts have become known, for example, from CH 520 009 A.
  • the invention now aims to set up a device to create the type mentioned, with which even with strong mechanical Shocks as well as with permanent forces each selected end position until a new one is applied definitive positive hydraulic pressure is maintained.
  • the locking device should be in the cylinder piston unit of the hydraulic actuator can, even using small parts large adjustment stroke of the cylinder-piston unit released shall be.
  • the invention consists in essential in that the Locking member sleeve is formed in two parts, wherein an inner sleeve slidably mounted coaxially to an outer sleeve and the openings for the Covers locking members.
  • the construction according to the invention is such that the locking members guided in radial openings in a sleeve are, the sleeve against the force of a spring coaxial is movable.
  • a sleeve can be preferred be formed by balls locking members, the Locking members, and in the case of balls the diameter of the Balls in the radial direction should be larger than the radial one Extension of the sleeve.
  • the training according to the invention is such that the the sleeve guiding locking members is formed in two parts, an inner sleeve being displaceable coaxially with an outer sleeve is stored and the openings for in a sliding position covers the locking members.
  • the inner sleeve holds the balls in particular Barriers in their position in which they subsequently follow immersing the piston against an abutment shoulder of the piston can be pressed resiliently.
  • FIG. 1 shows the basic arrangement one behind the other switched actuators for switch and crossing parts
  • Fig. 2 shows a longitudinal section through a hydraulic actuator End position assurance
  • Fig. 3 shows a longitudinal section through a hydraulic actuator End position assurance
  • Fig. 4 shows a longitudinal section through the hydraulic actuator according to the invention with end position assurance in a safe end position (Fig. 3), in a transitional position (Fig. 4), and in an adjustment position (Fig. 5).
  • hydraulic actuators 1 are hydraulic Lines 2 connected one behind the other.
  • the hydraulic Actuators are designed as cylinder piston units and have a piston 3, which in two cylinders 4th is axially slidably mounted.
  • the piston 3 When pressurizing the Working rooms 5 through liquid supplied via line 2 the piston 3 is axially displaced.
  • a stop shoulder 8 of the piston 3 works in this position with a device for securing the end position 9 together, ensuring that the piston 3rd remains in the end position against the force of a spring 10.
  • the hydraulic Actuator 1 is while maintaining the reference numerals 1 from slidingly mounted in a cylinder 4 Piston 3 formed, the tightness of the working spaces by Sealing rings 11 is guaranteed.
  • the piston 3 is in the respective end position by the securing device of the end position 9 held on one side of the cylinder piston unit. In this Position is immersed by the cylinder piston 3 during the displacement process Radially displaceable in a circumferential piston groove 12 Locking member 13, e.g.
  • the sleeve 17th has openings 18 for guiding the locking members 13 in which the locking members 13 are axially supported and is against the force of the axially mounted in the circumferential groove 12
  • Spring 10 also axially slidably mounted.
  • the sleeve 17 is opposite to move the spring force so that the shut-off member 13 in the Piston circumferential groove 12 immersed.
  • the operational readiness for Any adjustment is given when the locking members 13 completely into the circumferential groove 12 so that the Piston 3 is freely movable along the cylinder 4.
  • the Location of the radially displaceable locking members 13 during the displacement process corresponds to the conditions on the the safety device in the secured state opposite side of the cylinder piston unit in Fig. 2.
  • Fig. 3 now shows the embodiment of an actuator according to the invention, the construction being such that the displaceable locking members 13, by which the end position securing is accomplished, are not supported on the piston and must be carried along during the adjustment process.
  • Fig. 3 shows the secured end position, in which a piston end part 19 is attached to the end of the piston.
  • the entire piston is in turn axially displaceably mounted in a cylinder 4, the working spaces 3 being in turn sealed by seals 11.
  • the two working spaces 5 of the hydraulic actuator are connected to one another by the bore 6 which coaxially penetrates the piston 3.
  • the poppet valve 7 is also arranged. This is designed here as a check valve with a shut-off element, for example in the form of a ball 20.
  • a spherical radially displaceable locking member 13 is in turn guided in a coaxially movably mounted driving sleeve 17 with openings 18.
  • the driver sleeve 17 is guided on a stepped outer guide sleeve 25, which can be used from the front side in the cylinder 4 with the cylinder base 21 removed, which has the advantage over the embodiment according to FIG. 2 that the radially displaceable locking members 13 do not have to be moved ,
  • the guide sleeve 25 On the face side, the guide sleeve 25 has an area of the smallest radius 26, which is adjoined by an area of larger radius 27, on which the driving sleeve 17 is axially displaceably mounted. In the secured position, as shown in Fig.
  • the locking member 13 is displaced radially inward through the central region of the guide sleeve 25 so that part of the outer surface of the locking member 13 displaced radially inward abuts against the stop shoulder 8 of the piston end piece 19 and an offset of the piston can only take place when the force of the spring 10 is overcome.
  • 4 shows the positions of the individual elements of the device for securing the end position during the transition from the end position into an axial displacement position of the piston 3.
  • the locking member 13 guided in the driving sleeve 17 is carried along by the stop shoulder 8 until it plunges into an area adjoining the area 27 of the guide sleeve 25 with the largest clear cross-section 29 such that the stop shoulder 8, the driving sleeve 17 and that can move over displaceable locking member 13 carried by her and thus the piston is released from the secured position.
  • an auxiliary spring 30 is supported on the bottom 21 of the cylinder and acts against the cover sleeve 31, the other end of which cooperates with the stop of the end piece 19.
  • the piston 3 is axially displaced by a correspondingly applied pressure so that the end piece of the piston 19 is brought out of the area of interaction with the device for securing the end position 9.
  • the maximum travel and the spring force of the auxiliary spring 30 and the length of the cover sleeve 31 are adjusted so that the outer wall of the cover sleeve 31, the falling out of the locking member 13 from the Breakthrough 18 prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Actuator (AREA)
  • Vehicle Body Suspensions (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Body Structure For Vehicles (AREA)
  • Control Of Position Or Direction (AREA)
  • Lock And Its Accessories (AREA)
  • Fluid-Pressure Circuits (AREA)

Claims (5)

  1. Dispositif de sécurité des positions de fin de course dans des dispositifs hydrauliques de commande de positionnement (1) pour des pièces d'aiguillage ou de croisement, dans lesquels au moins un piston (3), susceptible d'être sollicité par un fluide, coopère à sa position finale avec une soupape (7), des organes de blocage (13) déplaçables radialement étant disposés coaxialement par rapport au piston (3), organes de blocage qui, à la position de sécurité, coopèrent en direction axiale de façon élastique avec un épaulement d'appui (8) du cylindre, les organes de blocage (13) étant guidés dans des passages radiaux d'une douille (17) et la douille (17) étant déplaçable coaxialement à l'encontre de la force d'un ressort (10), caractérisé en ce que la douille (17) guidant les organes de blocage (13) est réalisée en deux parties, une douille intérieure (31) étant montée déplaçable coaxialement par rapport à une douille extérieure (17) et, en une position de manoeuvre, couvrant les passages (18) prévus pour les organes de blocage (13).
  2. Dispositif selon la revendication 1, caractérisé en ce que les organes de blocage (13) en direction radiale sont de dimension supérieure à la dimension radiale de la douille (17).
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que la douille intérieure (31) est en appui de façon élastique sur le cylindre (4) ou sur le fond du cylindre (21)
  4. Dispositif selon la revendication 1, 2 ou 3, caractérisé en ce que le piston (3) présente un épaulement de butée pour la douille intérieure (31) de la douille (17, 31) en deux parties.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que les organes de blocage (13) sont formés par des billes.
EP96890186A 1995-12-14 1996-12-05 Dispositif de sécurité de positions de fin de course de commandes de positionnement pour aiguillages et croisements Expired - Lifetime EP0779197B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT202695 1995-12-14
AT0202695A AT403463B (de) 1995-12-14 1995-12-14 Einrichtung zum sichern der endlagen von weichen- und kreuzungsstellantrieben
AT2026/95 1995-12-14

Publications (2)

Publication Number Publication Date
EP0779197A1 EP0779197A1 (fr) 1997-06-18
EP0779197B1 true EP0779197B1 (fr) 2002-03-20

Family

ID=3526208

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96890186A Expired - Lifetime EP0779197B1 (fr) 1995-12-14 1996-12-05 Dispositif de sécurité de positions de fin de course de commandes de positionnement pour aiguillages et croisements

Country Status (4)

Country Link
EP (1) EP0779197B1 (fr)
AT (2) AT403463B (fr)
DE (1) DE59608916D1 (fr)
PT (1) PT779197E (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT406038B (de) * 1997-12-17 2000-01-25 Vae Ag Einrichtung zum unterstützen der verschiebebewegung und zum elastischen verriegeln von beweglichen weichenteilen
WO2002055360A1 (fr) 2001-01-11 2002-07-18 Vae Eisenbahnsysteme Gmbh Dispositif de deplacement et de blocage d'elements d'aiguillage mobiles
AT5757U1 (de) * 2001-07-31 2002-11-25 Vae Eisenbahnsysteme Gmbh Einrichtung zum umstellen von weichen
AT500296B1 (de) * 2003-10-31 2006-12-15 Vae Gmbh Einrichtung zum verriegeln von endlagen von beweglichen weichenteilen, insbesondere weichenverschluss
CZ20898U1 (cs) * 2010-04-14 2010-05-17 DT-VÝHYBKÁRNA A STROJÍRNA, a.s. Akcní clen hydraulického záveru s mechanickým uzamykáním a závorováním
US8684318B2 (en) 2010-09-16 2014-04-01 Spx International Limited Mechanical lock

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH520009A (de) * 1970-06-16 1972-03-15 Int Standard Electric Corp Elektrohydraulischer Antrieb zum Umstellen von auffahrbaren und nichtauffahrbaren Weichen in Eisenbahnanlagen
DE2049873A1 (de) * 1970-10-10 1972-04-13 Goldschmidt Ag Th Selbstverriegelnde Stellvorrichtung
SI9300651A (en) * 1992-12-17 1994-06-30 Voest Alpine Eisenbahnsysteme Device for bolding movable parts of railway switches
CA2170128C (fr) * 1994-06-24 1999-05-11 Gerald Durchschlag Dispositif d'aiguillage
AT403462B (de) * 1995-05-03 1998-02-25 Vae Ag Einrichtung zum umstellen von weichen

Also Published As

Publication number Publication date
PT779197E (pt) 2002-07-31
ATE214672T1 (de) 2002-04-15
DE59608916D1 (de) 2002-04-25
AT403463B (de) 1998-02-25
EP0779197A1 (fr) 1997-06-18
ATA202695A (de) 1997-07-15

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