EP2753757B1 - Fish-plate enabling insulation of a buried rail - Google Patents

Fish-plate enabling insulation of a buried rail Download PDF

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Publication number
EP2753757B1
EP2753757B1 EP12756788.1A EP12756788A EP2753757B1 EP 2753757 B1 EP2753757 B1 EP 2753757B1 EP 12756788 A EP12756788 A EP 12756788A EP 2753757 B1 EP2753757 B1 EP 2753757B1
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EP
European Patent Office
Prior art keywords
splice bar
rail
fibres
matrix
bar according
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EP12756788.1A
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German (de)
French (fr)
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EP2753757A1 (en
Inventor
Patrice Boulesteix
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Plastiform's
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Plastiform's
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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
    • E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
    • E01B19/003—Means for reducing the development or propagation of noise
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B21/00—Track superstructure adapted for tramways in paved streets

Definitions

  • the present invention relates to a device for sealing along a rail buried in a substrate.
  • the rail is preferably provided isolated from the substrate by a system of splints.
  • the splints provide sound insulation, electrical insulation and sealing around the rail vis-à-vis its environment.
  • the platform As the platform is subjected to the weather, it is particularly subject to strong temperature variations, particularly in certain regions where the thermal amplitudes can reach 40 to 50 ° C.
  • the fishplates subject to these temperature variations, by retracting longitudinally, create between them spaces detrimental to the insulation, including sealing.
  • a withdrawal greater than 1% is generally not acceptable, earth, water or gravel, in particular, can be introduced and thus create leakage of stray currents.
  • such a splint intended to isolate a railway rail from its environment, in particular a buried rail, is characterized in that it comprises an insulating material forming a matrix, thermally insulating and / or electrically and / or watertight, and, fibers forming at least one sheet, arranged and selected to give the splice a linear shrinkage coefficient, measured along the longitudinal direction, less than the linear shrinkage coefficient of the matrix, measured according to the longitudinal direction, the matrix consisting of several plates extending longitudinally and assembled together, each of said plies being assembled between two of said plates
  • the fibers comprise a set of fibers extending substantially longitudinally in said matrix.
  • These fibers may form a web, preferably consisting of two sets of fibers, crossed with each other.
  • the figure 1 illustrates a rail 1 buried in a substrate 2-4.
  • the rail is intended to roll the wheels 5 of a train.
  • the rail 1 is isolated from the substrate 2-4 by ribs 6-8.
  • the rail is isolated by three fishplates 6-8, whose role is mainly to avoid leakage currents, the rail 1 being conductive.
  • a first splint 6 extends along a left flank (in the position of the figure 1 ) of the rail 1
  • a second splint 7 extends along a right side of the rail and the third envelope the sole of the rail.
  • the fishplates have complementary shapes to each other and to the rail so that they fit together with each other and with the rail.
  • the fishbone 6-8 extend longitudinally - that is, perpendicular to the plane of the figure 1 - Along the rail 1.
  • Each splint having a given length it is extended along the same rail 1 by another splint of the same type, adjacent to the previous one.
  • the figure 2 illustrates an embodiment for the first splice 6.
  • the splice consists of a matrix plate material, each plate 11 being arranged vertically (in the position of Figures 1 and 2 ) and extending longitudinally along the length of the splint.
  • the splice 6 consists of eleven plates 11 arranged transversely against each other and assembled together.
  • Each layer 12 comprises, firstly a first set of fibers 13 arranged substantially longitudinally and a second set of fibers 14 arranged to connect the fibers 13 between they.
  • the fibers are chosen so that they have a shrinkage coefficient lower than that of the plate material.
  • the length of a splint containing such a layer 12 varies less with the temperature than the length of a splice without such a layer.
  • the splints in particular the lateral splints 6, 7, are advantageously made of a plastic foam, for example a polyethylene foam.
  • the fibers may in particular be of one or more materials, in particular polypropylene, polyamide, polyester and / or glass.
  • a web may consist of a single set of fibers arranged longitudinally. It may also consist of two crossed assemblies and both forming an angle with a longitudinal direction, for example arranged symmetrically to each other with respect to this direction.
  • the longitudinal shrinkage coefficient of the matrix is reduced so that it is substantially equal to the linear shrinkage coefficient of the fibers.
  • the fibers are chosen so that the longitudinal shrinkage coefficient is less than 0.04% / ° K, so that for a thermal amplitude of 25 ° K, the longitudinal shrinkage of the splint is less than 1%. . Even more preferably, the fibers are selected so that the longitudinal shrinkage coefficient is less than 0.02% / ° K.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Materials For Medical Uses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Moulding By Coating Moulds (AREA)
  • Package Frames And Binding Bands (AREA)
  • Laminated Bodies (AREA)

Description

La présente invention se rapporte à un dispositif pour réaliser une étanchéité le long d'un rail enterré dans un substrat.The present invention relates to a device for sealing along a rail buried in a substrate.

Pour certains véhicules roulant sur rail, notamment les tramways, les rails ne doivent pas constituer un obstacle pour une circulation piétonne ou automobile qui circule sur la même plateforme que celle utilisée par le véhicule sur rail. C'est notamment le cas lorsque cette plateforme est une chaussée routière partagée par un tramway. Les rails sont alors généralement prévus enterrés dans un substrat de cette plateforme, de façon à être affleurant avec la plateforme.For certain vehicles running on rail, in particular trams, the rails must not constitute an obstacle for a pedestrian or automobile traffic which circulates on the same platform as that used by the rail vehicle. This is particularly the case when this platform is a road pavement shared by a tramway. The rails are then generally provided buried in a substrate of this platform, so as to be flush with the platform.

Comme particulièrement illustré par le document FR 2 885 372 , le rail est de préférence prévu isolé du substrat par un système d'éclisses. Les éclisses assurent notamment une isolation phonique, une isolation électrique et une étanchéité autour du rail vis-à-vis de son environnement.As particularly illustrated by the document FR 2,885,372 , the rail is preferably provided isolated from the substrate by a system of splints. The splints provide sound insulation, electrical insulation and sealing around the rail vis-à-vis its environment.

La plateforme étant soumise aux intempéries, elle est notamment soumise à de fortes variations de températures, particulièrement dans certaines régions où les amplitudes thermiques peuvent atteindre 40 à 50°C. Les éclisses, soumises à ces variations de températures, en se rétractant longitudinalement, créent entre elles des espaces préjudiciables à l'isolation, notamment à l'étanchéité. Un retrait supérieur à 1% n'est généralement pas acceptable, de la terre, de l'eau ou des graviers, notamment, peuvent s'introduire et créer ainsi des fuites de courants vagabonds.As the platform is subjected to the weather, it is particularly subject to strong temperature variations, particularly in certain regions where the thermal amplitudes can reach 40 to 50 ° C. The fishplates, subject to these temperature variations, by retracting longitudinally, create between them spaces detrimental to the insulation, including sealing. A withdrawal greater than 1% is generally not acceptable, earth, water or gravel, in particular, can be introduced and thus create leakage of stray currents.

Les documents US-A-1771078 et EP-A-1331310 décrivent des éclisses destinées à isoler un rail de chemin de fer.The documents US Patent 1771078 and EP-A-1331310 describe fishplates for isolating a railroad rail.

L'invention a pour but de proposer un dispositif d'éclisse, apte à maintenir une isolation satisfaisante le long d'un rail enterré.The invention aims to provide a splint device, able to maintain satisfactory insulation along a buried rail.

Selon l'invention, une telle éclisse, destinée à isoler un rail de chemin de fer de son environnement, notamment un rail enterré, est caractérisée en ce qu'elle comprend une matière isolante formant matrice, isolante thermiquement et/ou électriquement et/ou étanche à l'eau, et, des fibres formant au moins une nappe, disposées et choisies pour conférer à l'éclisse un coefficient de retrait linéaire, mesuré selon la direction longitudinale, inférieur au coefficient de retrait linéaire de la matrice, mesuré selon la direction longitudinale, la matrice étant constituée de plusieurs plaques s'étendant longitudinalement et assemblées entre elles, chacune desdites nappes étant assemblée entre deux desdites plaquesAccording to the invention, such a splint, intended to isolate a railway rail from its environment, in particular a buried rail, is characterized in that it comprises an insulating material forming a matrix, thermally insulating and / or electrically and / or watertight, and, fibers forming at least one sheet, arranged and selected to give the splice a linear shrinkage coefficient, measured along the longitudinal direction, less than the linear shrinkage coefficient of the matrix, measured according to the longitudinal direction, the matrix consisting of several plates extending longitudinally and assembled together, each of said plies being assembled between two of said plates

Avantageusement, les fibres comprennent un ensemble de fibres s'étendant sensiblement longitudinalement dans ladite matrice. Ces fibres peuvent former une nappe, de préférence constituée de deux ensembles de fibres, croisés entre eux.Advantageously, the fibers comprise a set of fibers extending substantially longitudinally in said matrix. These fibers may form a web, preferably consisting of two sets of fibers, crossed with each other.

Dans un mode de réalisation préféré, chaque plaque est de préférence disposée verticalement. De préférence aussi, une éclisse comprend au moins deux nappes.In a preferred embodiment, each plate is preferably arranged vertically. Also preferably, a splint comprises at least two layers.

Plusieurs modes d'exécution de l'invention seront décrits ci-après, à titre d'exemples non limitatifs, en référence aux dessins annexés dans lesquels :

  • La figure 1 est une coupe transversale d'une installation de rail enterré, illustrant un contexte possible de l'invention ; et,
  • La figure 2 est une illustration d'un mode de réalisation d'une éclisse selon l'invention, dans le contexte de la figure 1.
Several embodiments of the invention will be described below, by way of non-limiting examples, with reference to the appended drawings in which:
  • The figure 1 is a cross-section of a buried rail installation, illustrating a possible context of the invention; and,
  • The figure 2 is an illustration of an embodiment of a splice according to the invention, in the context of the figure 1 .

La figure 1 illustre un rail 1 enterré dans un substrat 2-4. Le rail est prévu pour y faire rouler les roues 5 d'un train. Le rail 1 est isolé du substrat 2-4 par des éclisses 6-8.The figure 1 illustrates a rail 1 buried in a substrate 2-4. The rail is intended to roll the wheels 5 of a train. The rail 1 is isolated from the substrate 2-4 by ribs 6-8.

Dans l'exemple illustré, le rail est isolé par trois éclisses 6-8, dont le rôle est principalement d'éviter des courants de fuite, le rail 1 étant conducteur. Parmi les trois éclisses, une première éclisse 6 s'étend le long d'un flanc gauche (dans la position de la figure 1) du rail 1, une deuxième éclisse 7 s'étend le long d'un flanc droit du rail et la troisième enveloppe la semelle du rail. Les éclisses ont des formes complémentaires entre elles et avec le rail de sorte qu'elles s'emboîtent entre elles et avec le rail. Les éclisses 6-8 s'étendent longitudinalement - c'est-à-dire perpendiculairement au plan de la figure 1 - le long du rail 1. Chaque éclisse ayant une longueur donnée, elle est prolongée le long du même rail 1 par une autre éclisse du même type, adjacente à la précédente.In the example shown, the rail is isolated by three fishplates 6-8, whose role is mainly to avoid leakage currents, the rail 1 being conductive. Of the three splints, a first splint 6 extends along a left flank (in the position of the figure 1 ) of the rail 1, a second splint 7 extends along a right side of the rail and the third envelope the sole of the rail. The fishplates have complementary shapes to each other and to the rail so that they fit together with each other and with the rail. The fishbone 6-8 extend longitudinally - that is, perpendicular to the plane of the figure 1 - Along the rail 1. Each splint having a given length, it is extended along the same rail 1 by another splint of the same type, adjacent to the previous one.

La figure 2 illustre un mode de réalisation pour la première éclisse 6. L'éclisse est constituée d'un matériau en plaque formant matrice, chaque plaque 11 étant disposée verticalement (dans la position des figures 1 et 2) et s'étendant longitudinalement sur la longueur de l'éclisse. Dans cet exemple, l'éclisse 6 est constituée de onze plaques 11 disposées transversalement l'une contre l'autre et assemblées entre elles.The figure 2 illustrates an embodiment for the first splice 6. The splice consists of a matrix plate material, each plate 11 being arranged vertically (in the position of Figures 1 and 2 ) and extending longitudinally along the length of the splint. In this example, the splice 6 consists of eleven plates 11 arranged transversely against each other and assembled together.

Deux nappes 12 de fibres 13,14 sont disposées entre deux plaques adjacentes. Une nappe est disposée entre la troisième et la quatrième plaque en partant de l'un ou l'autre des côtés de l'éclisse 6. Chaque nappe 12 comprend, d'une part un premier ensemble de fibres 13 disposées sensiblement longitudinalement et, un deuxième ensemble de fibres 14 disposées de façon à relier les fibres 13 entre elles.Two plies 12 of fibers 13, 14 are arranged between two adjacent plates. A web is disposed between the third and fourth plates from one or the other of the sides of the splice 6. Each layer 12 comprises, firstly a first set of fibers 13 arranged substantially longitudinally and a second set of fibers 14 arranged to connect the fibers 13 between they.

Les fibres sont choisies de sorte qu'elles ont un coefficient de retrait inférieur à celui du matériau en plaque. Ainsi, la longueur d'une éclisse contenant une telle nappe 12 varie moins avec la température que la longueur d'une éclisse dépourvue d'une telle nappe.The fibers are chosen so that they have a shrinkage coefficient lower than that of the plate material. Thus, the length of a splint containing such a layer 12 varies less with the temperature than the length of a splice without such a layer.

Les éclisses, notamment les éclisses latérales 6, 7, sont avantageusement en une mousse de matière plastique, par exemple une mousse polyéthylène. Les fibres peuvent notamment être d'une ou plusieurs matières, notamment de polypropylène, de polyamide, polyester et/ou de verre.The splints, in particular the lateral splints 6, 7, are advantageously made of a plastic foam, for example a polyethylene foam. The fibers may in particular be of one or more materials, in particular polypropylene, polyamide, polyester and / or glass.

Bien sûr, l'invention définie par les revendications n'est pas limitée aux exemples qui viennent d'être décrits.Of course, the invention defined by the claims is not limited to the examples which have just been described.

Ainsi, une nappe peut être constituée d'un seul ensemble de fibres disposées longitudinalement. Elle peut aussi être constituée de deux ensembles croisés et formant l'un et l'autre un angle avec une direction longitudinale, par exemple disposées symétriquement l'un de l'autre par rapport à cette direction.Thus, a web may consist of a single set of fibers arranged longitudinally. It may also consist of two crossed assemblies and both forming an angle with a longitudinal direction, for example arranged symmetrically to each other with respect to this direction.

Grâce à l'incorporation de fibres à faible coefficient de retrait dans la matrice d'une éclisse selon l'invention, on réduit le coefficient de retrait longitudinal de la matrice de sorte qu'il est sensiblement égal au coefficient de retrait linéaire des fibres. De préférence, on choisit les fibres de sorte que le coefficient de retrait longitudinal est inférieur à 0,04% /°K, de sorte que pour une amplitude thermique de 25°K, le retrait longitudinal de l'éclisse est inférieur à 1%. De façon encore plus préférée, on choisit les fibres de sorte que le coefficient de retrait longitudinal est inférieur à 0,02% /°K.By incorporating fibers with a low shrinkage coefficient into the matrix of a splint according to the invention, the longitudinal shrinkage coefficient of the matrix is reduced so that it is substantially equal to the linear shrinkage coefficient of the fibers. Preferably, the fibers are chosen so that the longitudinal shrinkage coefficient is less than 0.04% / ° K, so that for a thermal amplitude of 25 ° K, the longitudinal shrinkage of the splint is less than 1%. . Even more preferably, the fibers are selected so that the longitudinal shrinkage coefficient is less than 0.02% / ° K.

Claims (8)

  1. Splice bar (6-8) intended to insulate a rail (1) of a railroad from its environment, in particular a buried rail, comprising:
    - a matrix formed from a material that is thermally and/or electrically insulating and/or watertight; and,
    - fibres (13, 14) forming at least one web (12), arranged and chosen to provide the splice bar with a linear shrinkage coefficient, measured according to the longitudinal direction, less than the linear shrinkage coefficient of the matrix, measured according to the longitudinal direction
    characterised in that said matrix is comprised of several plates (11) extending longitudinally and assembled together, with each one of said webs (12) being assembled between two of said plates (11).
  2. Splice bar according to claim 1, characterised in that each plate (11) is arranged vertically.
  3. Splice bar according to one of claims 1 or 2,
    characterised in that the fibres (13, 14) comprise a set of fibres extending substantially longitudinally in said matrix.
  4. Splice bar according to one of claims 1 to 3,
    characterised in that each web (12) is comprised of two sets of fibres (13, 14), crossed between them.
  5. Splice bar according to one of claims 1 to 4,
    characterised in that it comprises at least two webs.
  6. Splice bar according to one of claims 1 to 5,
    characterised in that the matrix is made from a foam of plastic material, more preferably a polyethylene foam.
  7. Splice bar according to one of claims 1 to 6,
    characterised in that the fibres (13, 14) include one or several materials among polypropylene, polyamide, polyester and glass.
  8. Splice bar according to one of claims 1 to 7,
    characterised in that the fibres (13, 14) have a longitudinal shrinkage coefficient less than 0.04%/°K, more preferably less than 0.02% /°K.
EP12756788.1A 2011-09-06 2012-08-24 Fish-plate enabling insulation of a buried rail Active EP2753757B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1157885A FR2979643B1 (en) 2011-09-06 2011-09-06 ECLISSES FOR BETTER INSULATION OF A BRAIN RAIL.
PCT/FR2012/051929 WO2013034831A1 (en) 2011-09-06 2012-08-24 Splice bars enabling the improved insulation of a buried rail

Publications (2)

Publication Number Publication Date
EP2753757A1 EP2753757A1 (en) 2014-07-16
EP2753757B1 true EP2753757B1 (en) 2017-07-19

Family

ID=46829822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12756788.1A Active EP2753757B1 (en) 2011-09-06 2012-08-24 Fish-plate enabling insulation of a buried rail

Country Status (6)

Country Link
EP (1) EP2753757B1 (en)
ES (1) ES2644130T3 (en)
FR (1) FR2979643B1 (en)
MA (1) MA35512B1 (en)
TN (1) TN2014000088A1 (en)
WO (1) WO2013034831A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3018288A1 (en) * 2014-03-06 2015-09-11 Plastiform S ECLISSE COMPRISING A PROTECTIVE STRIP.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1771078A (en) * 1926-01-06 1930-07-22 Carey Philip Mfg Co Rail-expansion sound deadener
ES2220129T3 (en) * 1998-10-16 2004-12-01 Phoenix Aktiengesellschaft RAIL SYSTEM WITH ELECTRICAL INSULATION.
AT411694B (en) * 2002-01-24 2004-04-26 Getzner Werkstoffe Holding Gmbh DEVICE FOR THE ELASTIC STORAGE OF A RILLED RAIL
DE10224286C5 (en) * 2002-05-31 2010-01-28 Strabag Ag Track for rail vehicles and method for producing a track
FR2885372B1 (en) 2005-05-03 2010-10-29 Plastiform S DEVICE FOR THE ISOLATION AND SEALING OF A RAIL OF RAILWAY EQUIPMENT, TRAMWAY TYPE, MOUNTED ON TRAVERS

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP2753757A1 (en) 2014-07-16
TN2014000088A1 (en) 2015-07-01
WO2013034831A1 (en) 2013-03-14
FR2979643A1 (en) 2013-03-08
ES2644130T3 (en) 2017-11-27
MA35512B1 (en) 2014-10-02
FR2979643B1 (en) 2014-07-04

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