EP1555347B1 - Aiguillage ferroviaire à aiguille flexible - Google Patents

Aiguillage ferroviaire à aiguille flexible Download PDF

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Publication number
EP1555347B1
EP1555347B1 EP04380012A EP04380012A EP1555347B1 EP 1555347 B1 EP1555347 B1 EP 1555347B1 EP 04380012 A EP04380012 A EP 04380012A EP 04380012 A EP04380012 A EP 04380012A EP 1555347 B1 EP1555347 B1 EP 1555347B1
Authority
EP
European Patent Office
Prior art keywords
main point
acute
counterpoint
manganese steel
front part
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
EP04380012A
Other languages
German (de)
English (en)
Other versions
EP1555347A1 (fr
Inventor
Juan Carlos Sanchez Jorrin
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.)
JEZ Sistemas Ferroviarios SL
Original Assignee
JEZ Sistemas Ferroviarios SL
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Publication date
Application filed by JEZ Sistemas Ferroviarios SL filed Critical JEZ Sistemas Ferroviarios SL
Priority to DE602004006072T priority Critical patent/DE602004006072D1/de
Priority to EP04380012A priority patent/EP1555347B1/fr
Priority to ES04380012T priority patent/ES2286578T3/es
Priority to PT04380012T priority patent/PT1555347E/pt
Priority to AT04380012T priority patent/ATE360723T1/de
Publication of EP1555347A1 publication Critical patent/EP1555347A1/fr
Application granted granted Critical
Publication of EP1555347B1 publication Critical patent/EP1555347B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00—Switches; Crossings
    • E01B7/10—Frogs
    • E01B7/14—Frogs with movable parts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00—Switches; Crossings
    • E01B7/02—Tongues; Associated constructions
    • E01B7/06—Constructions with flexible tongues or flexible fishplates

Definitions

  • the present invention relates to an acute swing nose crossing with improved elements on the rolling surface, of application to both assembled swing nose crossings and in swing nose crossings with monoblock elements, based on the construction of all or part of the elements with rolling surface in austenitic manganese steel.
  • the improvements relate in particular to acute crossings in which the moving element consists of a main nose and a counter-nose joined to the main nose and moving with it in its sideways motion.
  • the crossing is the part of the railway where two tracks cross each other, and it must allow traffic to pass on both lines of the track without any restriction.
  • Crossings can be divided into those with fixed noses and those with swing noses, the latter having the advantage of eliminating the gap or interruption on the rolling surface required in fixed-nose crossings to allow the railway wheel flanges to pass.
  • the acute swing nose crossing comprises a fixed part and a moving part, the moving part being alternately coupled to either side of the fixed part to allow the railway wheel to pass on one or the other rail, constituting a continuous rolling surface. In this way check rails to guide the railway axles through the fixed-nose crossing gap are no longer necessary.
  • the elements with rolling surfaces of the crossing both of the fixed and moving element, have been made of steel of natural hardness or of steel, hardened by a heat treatment, the latter case providing a better wear resistance as the hardness of the rolling area is above 300 HBN.
  • austenitic manganese steel is also known, as these show an excellent compromise between the impact and wear resistance.
  • Austenitic manganese steel shows a marked phenomenon of surface hardening by cold plastic deformation as the train wheels pass, so that an extremely hard surface layer develops on its surface, suitable to resist the wear yet maintaining great ductility of its core so that it can withstand impact loads and resist crack propagation.
  • this swing nose crossing consists of a fixed and a moving element, with the property that the front triangular area of the moving element is made of cast manganese steel, having behind it two prolongations made of rails. The triangle and the rail prolongations are joined to each other by flash butt welding. This welding process is described for example in European Patent n° 0 467 881 and others.
  • the fixed part consists of a part made of cast manganese steel and a part made of rails that act as anchoring for several accessories, and as a coupling means for the moving element on either side of the fixed element.
  • the elements made of manganese steel are hardened by explosive hardening to an approximate hardness of 350 HBN.
  • the acute swing crossing object of the invention consists of a main point and a counterpoint, with the property that the main point is formed by two parts, a front part and a rear part, the front part, which is alternately coupled to either side of the fixed element, being made of austenitic manganese steel, while the rear part being made of machined rail.
  • the rear part made of a machined rail and the front part made of manganese steel are joined to each other by the aforementioned flash butt welding technique, reinforcing the joint of the parts by safety fishplates so that the main point will mainly bend at the rear part.
  • the counterpoint is made of rail and is integrally joined to the main point by bolted unions, so that the counterpoint follows the sideways motion of the main point when the moving element is in operation.
  • the object is to make all or part of the elements with rolling surfaces of the acute swing nose crossing of austenitic manganese steel, which provides a number of advantages over those made of carbon steel, low alloyed carbon steels of natural hardness or carbon steels with surface hardening by a heat treatment:
  • a pre-hardening by explosion or an analogous plastic deformation can be performed on the rolling surfaces of the elements made of austenitic manganese steel, conferring an initial hardness to the material between 320 and 350 HBN, limiting the initial plastic deformation induced by the contact of railway wheels.
  • This pre-hardening increases the life of the component and contributes to maintain the geometry of the rolling area throughout the service life of the component.
  • the acute swing nose crossing object of the invention comprises a fixed element (1) and a moving element (2), the moving element (2) being composed of a main point (2A) and a counterpoint (2B).
  • the front part of the main point (2A) is alternatively coupled to the two parts made of rail (1A) and (1B) of the fixed element (1), this displacement being performed by electromechanical elements, not shown in the figures, alternately giving passage by the main line, as shown in figure 1, or to the branch line, as shown in figure 2, closing the crossing gap and constituting a continuous rolling surface.
  • the main point (2A) consists of two parts (2A') and (2A"), with the property that the front part (2A') is made of austenitic manganese steel and it is the part that is alternately coupled to the two parts of the rail of the fixed element (1A) and (1B) in order to constitute with them a continuous rolling surface.
  • the rear part (2A) is made of machined rail that is joined to the fixed part (1) by heel blocks (1C).
  • the front part (2A') of the main point (2A) is welded by flash butt welding to the rear part (2A") of the main point (2A), made of machined rail, which is meant to establish continuity of the rolling surface of the main track, to absorb the elastic deformations during the sideways movement of the main point and to join this main point to the fixed element (1A), by means of heel blocks (1C). So that the elastic deformations are not transmitted to the welding between the front part (2A') and the rear part (2A") of the main point (2A) the welding is reinforced with two fishplates (2C) and (2C') on either side of it.
  • the counterpoint (2B) is made of machined rail and is integrally joined to the main point (2A), accompanying it in its sideways motion, so that it is perfectly coupled at the side of the main point, forming with it a continuous rolling surface to allow, when required and according to the crossing geometry, a longitudinal sliding of the main point (2A) and the counterpoint (2B), by making elongated holes in one of the two parts (2A) or (2B) of the moving element and using an elastic bolted union between them to prevent the moving element (2) from forming a non-deformable triangle in its transverse motion.
  • the purpose of the counterpoint is to provide continuity to the rolling surface in the branch line, to absorb elastic deformation during the sideways motion of the main point and to serve as a union element between the main point and the fixed element rail part (1B) by means of the corresponding heel blocks (1 C).
  • the moving element is completed by inner distance blocks (2F) that are alternately bolted to the main point (2A) and to the counterpoint (2B) so that the two maintain relative separations determined by the crossing geometry.
  • the acute swing nose crossing object of the Patent can be incorporated to a continuous welded track.
  • the fixed element consists of two rail sections (1A) and (1B), the contact with the railway wheel occurring on its front part, while its rear part acts as a support for heel blocks (1 C), distance blocks (1D) and base plates (1 E), together forming a unit joined by brackets, bolted unions and elastic clips.
  • the two rail parts (1A) and (1B) are made of austenitic manganese steel, so that in the area where rolling contact occurs the wheel always rests on austenitic manganese steel.
  • the parts (1A) and (1B) are welded to two rails of carbon steel or of low alloyed steels (1A') and (1B'), by a special flash butt welding technique, these rails (1A') and (1B') joining it to the track with a continuous welded rail.
  • the fixed element (1) consists of a monoblock case (1F), moulded in austenitic manganese steel, and of two rail parts (1A) and (1B) that act as anchoring for accessories such as distance blocks (1D), heel blocks (1 C) or sliding plates (1E), the moulded case (1 F) being joined by its front part to two rails of carbon steel or low alloyed steels (1A') and (1B') by a flash butt welding technique that allow their union by thermit welding to the rails of the railway turnout intermediate panel.
  • Both the rails of the rear part (1A) and (1 B) and those of the front part (1A') and (1B') are welded to the moulded case (1F) by a flash butt welding technique.
  • the upper surfaces of the moulded case (1 F) of the fixed element are moulded analogously to the rail profiles (1A) and (1B), thereby allowing the train wheels to pass and the alternate coupling of the moving element to give way to the main or branch line.
  • All of the described embodiments improve the performance of the elements or parts made of austenitic manganese steel subjecting them, in the areas in contact with the wheels, to a surface hardening process by explosion or analogous plastic deformation, conferring to the surface an initial hardness of 320 to 350 HBN, thereby limiting the initial plastic deformation of the rolling surface and thus increasing the lifetime of the component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Heat Treatment Of Articles (AREA)
  • Metal Rolling (AREA)
  • Push-Button Switches (AREA)

Claims (9)

  1. Croisement aigu à coeur mobile pour chemins de fer composé d'un élément fixé (1) qui incorpore deux rails (1A et 1 B) et un élément mobile (2) comprenant un point principal (2A) qui est couplé alternativement à chaque côté de l'élément fixé pour constituer une voie ferrée à roulement, et un contrepoint (2B) dans lequel le point principal (2A) consiste en deux parties, une partie avant (2A') faite d'acier au manganèse et une partie arrière (2A") faite d'un rail usiné, les deux parties (2A' et 2A") étant reliées par soudage en bout par étincelage, le soudage étant renforcé entre les deux parties (2A' et 2A") par des éclisses brutes (2C') de sorte que le point principal (2A) se courbe principalement à la partie arrière (2A") et le contrepoint (2B) étant fait d'un rail usiné est relié intégralement au point principal (2A), de sorte que le contrepoint (2B) suit le mouvement de côté du point principal (2A) pendant l'exécution de la manoeuvre de l'élément mobile (2), les deux parties de l'élément mobile (2A et 2B) étant attachées aux rails (1A et 1 B) de l'élément fixé par des entretoises de talon (1C) définissant un joint rigide, caractérisé en ce que la partie avant (2A') du point principal (2A) est fait d'acier au manganèse austénitique et le contrepoint (2B) est relié au point principal (2A) par des liaisons à boulons.
  2. Croisement aigu à coeur mobile pour voies de chemin de fer selon la revendication 1, caractérisé en ce que l'élément fixé consiste en deux parties ou éléments de rails (1A) et (1 B), la roue de voie de chemin de fer faisant contact avec la partie avant de ceux-ci, les deux parties (1A) et (1 B) agissant comme support d'ancrage pour les entretoises de talon (1C) et les blocs espaceurs (1D), les deux étant reliés à des plaques de base (1E) par des liaisons boulonnées, des fixations et des clips élastiques, formant ensemble une unité assemblée.
  3. Croisement à coeur mobile aigu pour chemins de fer selon la revendication 1 ou 2, caractérisé en ce que les parties de rails (1A) et (1B) de l'élément fixé sont faites d'acier au manganèse austénitique et sont reliées par leurs parties avant au deux rails (1A'), (1B'), faites d'acier au carbone ou d'acier faiblement allié, par une technique de soudage en bout par étincelage, de sorte qu'ils peuvent être incorporés à une voie ferrée avec un rail soudé de manière continue par soudage aluminothermique.
  4. Croisement aigu à coeur mobile pour voies de chemin de fer selon la revendication 1, caractérisé en ce que l'élément fixé (1) consiste en une première partie composée d'un boîtier monobloc (1F), moulé dans de l'acier à manganèse austénitique, et d'une seconde partie faite des rails (1A) et (1B) qui agissent comme ancrage pour des accessoires tel que des blocs espaceurs (1D), des entretoises de talon (1C) ou des plaques glissantes (1E), le boîtier monobloc (1F) étant relié aux deux rails avant (1A') et (1 B') ce qui permet une connexion à une voie de chemin de fer avec un rail soudé de manière continue par soudage aluminothermique formant les rails de la partie arrière (1A) et (1B), et ceux de la partie avant (1A') et (1 B') soudés au boîtier monobloc (1F) par une technique de soudage en bout par étincelage, l'élément mobile (2) étant couplé alternativement à chaque côté du boîtier monobloc (1F) pour livrer passage à la ligne principale ou la ligne secondaire.
  5. Croisement aigu à coeur mobile pour voies de chemin de fer selon la revendication 1, caractérisé en ce que la surface de contact avec les roues de la voie de chemin de fer de la partie avant (2A') du point principal (2A), fait d'acier à manganèse austénitique, est pré-durcie par explosion ou déformation plastique analogue jusqu'à une dureté entre approximativement 320 et 350 HBN de façon à augmenter sa durée de vie de service.
  6. Croisement aigu à coeur mobile pour voies de chemin de fer selon les revendications 1 et 3, caractérisé en ce que la surface de contact avec les roues de la voie de chemin de fer de la partie avant (2A') du point principal (2A), faite d'acier à manganèse austénitique, et les parties de rails (1A) et (1B) de l'élément fixé (1), faites d'acier à manganèse austénitique, sont pré-durcies par explosion ou déformation plastique analogue jusqu'à une dureté approximativement de 320 et 350 HBN de façon à augmenter sa durée de vie de service.
  7. Croisement aigu à coeur mobile pour voies de chemin de fer selon les revendications 1 et 4, caractérisé en ce que la surface de contact avec les roues de la voie de chemin de fer de la partie avant (2A') du point principal (2A), faite d'acier à manganèse austénitique, et le boîtier monobloc (1F) de l'élément fixé (1), fait d'acier à manganèse austénitique, sont pré-durcis par explosion ou déformation plastique analogue jusqu'à une dureté entre approximativement de 320 et 350 HBN de façon à augmenter sa durée de vie de service.
  8. Croisement aigu à coeur mobile selon l'une quelconque des revendications précédentes, dans lequel lesdites liaisons boulonnées par lesquelles le contrepoint (2B) est relié intégralement au point principal (2A) sont disposées de manière à permettre le glissement longitudinal entre le point principal (2A) et le contrepoint (2B).
  9. Croisement aigu à coeur mobile selon l'une quelconque des revendications précédentes, dans lequel lesdites unions boulonnées par lesquelles le contrepoint (2B) est intégralement relié au point principal (2A) sont des liaisons boulonnées élastiques incluant des trous allongés dans l'un desdits contrepoints (2B) et point principal (2A), de façon à empêcher l'élément mobile (2) de former un triangle non déformable dans son mouvement transversal.
EP04380012A 2004-01-16 2004-01-16 Aiguillage ferroviaire à aiguille flexible Expired - Lifetime EP1555347B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE602004006072T DE602004006072D1 (de) 2004-01-16 2004-01-16 Eisenbahnweiche mit flexibler Zunge
EP04380012A EP1555347B1 (fr) 2004-01-16 2004-01-16 Aiguillage ferroviaire à aiguille flexible
ES04380012T ES2286578T3 (es) 2004-01-16 2004-01-16 Corazon agudo de punta movil para ferrocarril.
PT04380012T PT1555347E (pt) 2004-01-16 2004-01-16 Agulha ferroviária com ponta móvel.
AT04380012T ATE360723T1 (de) 2004-01-16 2004-01-16 Eisenbahnweiche mit flexibler zunge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04380012A EP1555347B1 (fr) 2004-01-16 2004-01-16 Aiguillage ferroviaire à aiguille flexible

Publications (2)

Publication Number Publication Date
EP1555347A1 EP1555347A1 (fr) 2005-07-20
EP1555347B1 true EP1555347B1 (fr) 2007-04-25

Family

ID=34610247

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04380012A Expired - Lifetime EP1555347B1 (fr) 2004-01-16 2004-01-16 Aiguillage ferroviaire à aiguille flexible

Country Status (5)

Country Link
EP (1) EP1555347B1 (fr)
AT (1) ATE360723T1 (fr)
DE (1) DE602004006072D1 (fr)
ES (1) ES2286578T3 (fr)
PT (1) PT1555347E (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2399735B1 (es) * 2010-06-15 2013-11-13 Jez Sistemas Ferroviarios, S.L. Corazon agudo de punta movil para aparatos de via de carril garganta
FR2992334B1 (fr) * 2012-06-21 2015-01-02 Vossloh Cogifer Jonction d'elements de voie ferroviaire en acier manganese par soudure directe
GB2581383A (en) * 2019-02-15 2020-08-19 Progress Rail Services Uk Ltd Improved steel railway crossing

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE158723C (fr) *
GB466688A (en) * 1935-06-20 1937-06-02 Jean Francois Eugene Grand Improvements in railroad crossings
GB796415A (en) * 1955-02-17 1958-06-11 John Edmond Irvine Improvements in or relating to fishplates for railway track
DE1242252B (de) * 1965-04-24 1967-06-15 Kloeckner Werke Ag Gegossenes Herzstueck fuer Weichen und Verfahren zum Herstellen eines solchen Herzstueckes
AT395122B (de) 1990-07-20 1992-09-25 Voest Alpine Eisenbahnsysteme Verfahren zur verbindung von aus manganhartstahlguss bestehenden weichenteilen bzw. manganstahlschienen mit einer schiene aus kohlenstoffstahl
FR2737739B1 (fr) * 1995-08-10 1997-10-24 Cogifer Pointe mobile de coeur de croisement pour appareils de voie ferree de tres grande longueur, incorpores dans les longs rails soudes
ES2137807B1 (es) 1996-04-29 2000-08-16 Jez Sistemas Ferroviarios S L Cruzamiento agudo de punta movil para ferrocarril.
DE19621017C1 (de) * 1996-05-24 1998-01-08 Butzbacher Weichenbau Gmbh Verfahren zur Herstellung eines Gleisoberbauteils sowie Gleisoberbauteil

Also Published As

Publication number Publication date
ATE360723T1 (de) 2007-05-15
DE602004006072D1 (de) 2007-06-06
EP1555347A1 (fr) 2005-07-20
PT1555347E (pt) 2007-08-03
ES2286578T3 (es) 2007-12-01

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