EP2998438A1 - Railway expansion device - Google Patents

Railway expansion device Download PDF

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Publication number
EP2998438A1
EP2998438A1 EP15183935.4A EP15183935A EP2998438A1 EP 2998438 A1 EP2998438 A1 EP 2998438A1 EP 15183935 A EP15183935 A EP 15183935A EP 2998438 A1 EP2998438 A1 EP 2998438A1
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EP
European Patent Office
Prior art keywords
rail
distal
width
proximal portion
point
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
Application number
EP15183935.4A
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German (de)
French (fr)
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EP2998438B1 (en
Inventor
Francesco Barresi
Luc BADER
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Vossloh COGIFER SA
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Vossloh COGIFER SA
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Priority to MA39630A priority Critical patent/MA39630B1/en
Publication of EP2998438A1 publication Critical patent/EP2998438A1/en
Application granted granted Critical
Publication of EP2998438B1 publication Critical patent/EP2998438B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B11/00—Rail joints
    • E01B11/02—Dismountable rail joints
    • E01B11/20—Dismountable rail joints with gap-bridging
    • E01B11/32—Dismountable rail joints with gap-bridging by separate parts, Inserts bridging both rail heads
    • E01B11/34—Auxiliary rail beside gap

Definitions

  • the invention also relates to a corresponding method.
  • the apparatus is for example a dilation apparatus.
  • the space is then intended to allow longitudinal expansion of at least one of the first rail and the second rail, or more generally a relative movement of the first rail relative to the second rail.
  • An expansion device is a device allowing the free expansion of the rails of a railroad subjected to temperature variations.
  • the railway type expansion devices are described in particular in the EN13232-8 standard.
  • the railway vehicles concerned are of all types: urban and suburban, and in particular trams, trains for long-distance traffic ... etc.
  • the purpose of the apparatus is to allow the wheel of the railway vehicle to move from the first rail to the second rail with a continuity of support, despite the discontinuity of the rails.
  • the first rail and the second rail have transversely thinned transverse portions.
  • the central device is a simple device extending longitudinally from the proximal portion of the first rail to the proximal portion of the second rail. The central device ensures continuity of the support of the wheel from a first point of the proximal portion of the first rail to a second point of the proximal portion of the second rail.
  • An object of the invention is therefore to overcome all or part of the above disadvantages, by providing an apparatus which prevents the occurrence of such a phenomenon of wear, or reduce its magnitude, while remaining simple to install and to maintain, and that is a competitive cost.
  • the invention relates to an apparatus as described above, further comprising a first distal device and a second distal device, each extending longitudinally from the distal portion to the proximal portion respectively of the first rail and the second rail, the first distal device and the second distal device respectively forming two additional running surfaces in the running surface, the additional running surfaces being continuous respectively from a third point of the distal portion of the first rail to the first point, and the second point at a fourth point of the distal portion of the second rail projecting on the longitudinal direction.
  • an apparatus 1 for a railway (not shown) intended to be traversed in a longitudinal direction L by a railway vehicle (not completely shown) comprising at least one wheel 5 visible on the Figures 2 to 8 .
  • Such a railway generally comprises two rails substantially parallel to each other. If these rails were represented on the figure 1 , one of them would extend longitudinally on both sides of the apparatus 1.
  • the railway vehicle is a tramway.
  • the railway vehicle is of any other known type, including suburban, regional or TGV (high-speed trains, for national or international routes).
  • the wheel 5 is for example a conventional tram wheel.
  • the wheel 5 comprises a tread 10 and a flange 15 ( figure 2 ).
  • the tread 10 is for example conical.
  • the tread 10 is adapted to roll on the apparatus according to a rolling plane P defined by the longitudinal direction L and by a transverse direction T substantially perpendicular to the longitudinal direction.
  • the transverse direction T is a generatrix of the conical surface defined by the tread 10.
  • the apparatus 1 comprises a first rail 20 and a second rail 25 extending longitudinally one in the extension of the other, and separated by a space 30.
  • the apparatus 1 also comprises a central device 35, a first distal device 40, and a second distal device 45.
  • the rail vehicle being in the example a tram, the apparatus 1 finally optionally comprises a housing 50 which is flush with the surface of the ground 55.
  • the apparatus 1 is for example a dilation apparatus.
  • the space 30 is intended to allow longitudinal expansion of the first rail (20) and / or the second rail (25).
  • the casing 50 forms a form around the other parts of the apparatus 1.
  • the casing 50 comprises a cover 57 ( figure 2 ), advantageously removable, extending substantially in continuity with the ground 55.
  • the cover 57 defines an opening 59 extending longitudinally to allow the wheel 5 to roll over the other parts of the apparatus 1.
  • the cover 57 is in two parts located transversely on either side of the other parts of the apparatus 1.
  • the apparatus 1 is substantially symmetrical with respect to a plane P 'perpendicular to the longitudinal direction L and situated longitudinally at the level of the space 30.
  • proximal and distal refer to the space 30.
  • the first rail 20 comprises a proximal portion 61, a distal portion 63, and a transition portion 65 located longitudinally between the proximal portion and the distal portion.
  • the first rail 20 defines a groove 67 designed to receive the flange 15 ( figure 2 ).
  • the flange 15 is located on the inner side of the wheel 5.
  • the proximal portion 61 defines a running surface 69 in the rolling surface P.
  • the proximal portion 61 optionally has an upper surface 71 inclined relative to the rolling surface P and adapted to form a ramp for access to the running surface 69 for the wheel 5 when the latter rolls from right to left on the figure 1 .
  • the running surface 69 has a transverse width L1 ( figure 5 ) advantageously substantially constant in the longitudinal direction L.
  • the distal portion 63 comprises a first portion 63A advantageously corresponding to the rail "current" of the railway, a second portion 63B having a first transverse thinning, and a transition portion 63C located longitudinally between the first portion and the second portion.
  • Part 63B is advantageously thinned only at the level of the mushroom (upper part adapted to contact with the wheel 10).
  • the distal portion 63 defines a rolling surface 73 in the plane P having transversely a width L2 ( Figures 2 to 4 ) advantageously substantially constant in the longitudinal direction L.
  • the running surface 73 is, for example, not affected by the first thinning, that is to say that the part of the missing mushroom due to the first thinning is not intended to be in contact with the wheel 10 .
  • the width L2 is greater than the width L1 and measures for example about twice that of the latter.
  • the structure of the second rail 25 is deduced from that of the first rail 20 by symmetry with respect to the plane P '.
  • the rail 25 comprises a proximal portion 75, a distal portion 77, and a transition portion 79 ( figure 1 ).
  • the proximal portion 75 defines a running surface 81 in the rolling plane P and has an upper surface 83 forming an access ramp.
  • the distal portion 77 includes a first portion 77A, a second portion 77B having a first transverse thinning, and a transition portion 77C.
  • the distal portion 77 defines a rolling surface 82.
  • the central device 35, the first distal device 40, and the second distal device 45 form for example a single piece, preferably metal.
  • These three elements advantageously form a portion of rail comprising figure 3 ) a shoe 85 secured to the ground, a mushroom 87, and a core 89 connecting the mushroom to the shoe.
  • the central device 35 extends longitudinally from the proximal portion 61 of the first rail 20 to the proximal portion 75 of the second rail 25.
  • the central device 35 forms, in the rolling plane P, a surface central bearing 91 ( figures 1 , and 6 to 8 ).
  • the central device 35 is substantially symmetrical with respect to the plane P '.
  • the central tread surface 91 has transversely a width L3 advantageously substantially constant in the longitudinal direction L.
  • the central tread surface 91 is continuous from a first point A of the proximal portion 61 of the first rail 20 to a second point B of the proximal portion 75 of the second rail 25 in projection on the longitudinal direction L.
  • the width L3 is greater than or equal to the width L2, preferably substantially equal to the width L2.
  • the central device 35 is located transversely substantially against the proximal portions 61, 75 of the first rail 20 and the second rail 25.
  • the first distal device 40 and the second distal device 45 are substantially symmetrical to one another with respect to the plane P '.
  • the first distal device 40 extends longitudinally from the distal portion 63 to the proximal portion 61 of the first rail 20 ( figure 1 ).
  • the first distal device 40 is for example located transversely against the distal portion 63.
  • the first distal device comprises a main portion 93, and a transition portion 95 located longitudinally between the main portion 93 and the central device 35.
  • the first distal device 40 extends longitudinally from the second portion 63A of the distal portion 63 to the proximal portion 61 of the first rail 20.
  • the first distal device 40 defines an additional running surface 97 in the running surface P, and advantageously comprises an access ramp 99 adapted to facilitate access of the wheel 5 to the additional running surface 97.
  • the additional running surface 97 has transversely, in the main portion 93, a width L4 substantially constant in the longitudinal direction L.
  • the width L4 is for example greater than or equal to the width L1, preferably substantially equal to the width L1.
  • the additional running surface 97 is continuous from a third point C of the proximal portion 63 of the first rail 20 to the first point A in projection on the longitudinal direction L.
  • the first thinning of the distal portion 63 of the first rail 20 maximizes the width L4. Indeed, in the absence of the first transverse thinning, the first distal device 40 would be transversely further away from the running surface 73.
  • the second distal device 45 being substantially symmetrical with the first distal device 40 with respect to the plane P ', the second distal device will not be described in detail.
  • the second distal device 45 comprises a main portion 101 and a transition portion 103.
  • the second distal device 45 defines an additional running surface 105 and advantageously comprises an access ramp 107.
  • the first distal device 40, the central device 35 and the second distal device 45 define for example an outer edge 109 substantially rectilinear and parallel to the longitudinal direction L.
  • the additional running surface 105 is continuous from the second point B to a fourth point D of the distal portion 77 of the second rail 25 in projection on the longitudinal direction L.
  • first rail 20 and the second rail 25 are likely to expand or contract longitudinally under the effect of temperature change. This has the effect of increasing or decreasing the length of the space 30.
  • the role of the apparatus 1 is to allow the railway vehicle (not shown) to cross the space 30.
  • the railway vehicle arrives for example longitudinally from the left side. If it came from the right side, the following steps would simply be reversed temporally.
  • the wheel 5 rolls on a rail (not shown), located in the extension of the first rail 20. Then the wheel 5 arrives on the first rail 20.
  • the tread 10 of the wheel 5 then rolls on the running surface 73 defined by the distal portion 63 of the first rail 20.
  • the strand 15 is then in the groove 67, which ensures a transverse guidance of the wheel 5 .
  • the wheel 5 continues to advance on the distal portion 63. As visible on the figure 3 , the wheel 5 is above the access ramp 99 of the first distal device 40, but is not yet in contact with the latter. The wheel 5 continues to press on the running surface 73.
  • the width of the support is always the width L2 of the tread 73.
  • the first transverse thinning of the rail 20 makes it possible to maximize the width of the access ramp 99 on the side of the distal portion 63 of the first rail 20.
  • the wheel 5 comes into contact with the access ramp 99 and arrives ( figure 4 ) on the additional tread 97 defined by the first distal device 40.
  • the width of the support is then the sum of the widths L2 and L4. Roughly at the cutting plane of the figure 4 , the wheel 5 passes longitudinally at the third point C ( figure 1 ).
  • the wheel 5 passes from the distal portion 63 to the proximal portion 61 ( figure 5 ).
  • the wheel 5 rolls on the running surface 69 of the proximal portion 61 having the width L1 smaller than the width L2.
  • the support is completed by the additional rolling surface 97.
  • the width of the support corresponds to the width L1. Creep wear phenomena of the upper surface of the first rail 20 may occur at this point in the devices of the prior art.
  • the wheel continues to advance ( figure 6 ), it passes continuously from the first distal device 40 to the central device 35.
  • the wheel 5 is then resting on the rolling surface 69 of the first rail 20 and on the central bearing surface 91 of the central device 35.
  • the width of the 'support is the sum of the widths L1 and L3.
  • the wheel 5 advances and arrives above the access ramp 71 of the first rail 20.
  • the wheel 5 is then supported only on the central device 35.
  • the width of the support is equal to the width L3.
  • the wheel 5 still advances to be above the space 30.
  • the wheel 5 is then always resting on the central device 35, with a bearing width L3.
  • the wheel 5 continues its progression to the right on the figure 1 and, because of the symmetry with respect to the plane P ', the same steps occur in the reverse order.
  • the wheel 5 passes longitudinally from the second point B to the fourth point D in a continuous manner thanks to the additional running surface 105 of the second distal device 45.
  • the additional tread surface 105 provides a bearing width L4 at a time when, in the prior art devices, the bearing width is only equal to L1.
  • the risk of creep wear near the transition portion 79 of the second rail 25 is greatly reduced in the device according to the invention.
  • the support of the wheel 5 is continuous not only from the first point A to the second point B, but also from the third point C to the first point A, and from the second point B to the fourth point D. which provides additional support for the wheel 5.
  • the risks of wear are necessarily reduced or canceled.
  • the apparatus 1 is simple to implement and at a competitive cost.
  • first distal device 40, the central device 35 and the second distal device 45 offer a physically continuous tread from the third point C to the fourth point D.
  • the continuity is not physical, but only in projection on the longitudinal direction L. Indeed, it is possible to achieve one or the other of the first distal device 40, the central device 35 and the second distal device 45 in such a way that these devices did not come from material, nor each in one piece. In these particular embodiments, there is no physical continuity of the tread, but only continuity in projection on the longitudinal direction L, which is sufficient to ensure a continuous support for the wheel 5.
  • first distal device 35, the second distal device 45 and the central device 35 are made of material and / or constituted by a rail makes it possible to simplify the device 1.
  • width L4 is at least equal to the width L1 allows at least to double the rolling width between the third point C and the first point A and, in the example shown, to obtain a rolling width L1 + L4 greater than or equal to the width L2 of the running surface of the distal portion 63 of the first rail 20.
  • the first optional thinning of the first rail 20 makes it possible to maximize the width L4.
  • width L3 of the central running surface 91 is at least equal to the width L2 makes it possible to obtain a rolling width at least equal to L2 when the wheel 5 bears only on the central device 35.
  • the rolling width is equal to the sum L1 + L3, which is strictly greater than the width L2 of the running surface of the distal portion 63 of the first rail 20 .
  • the rolling width is exactly equal to the width L3, that is to say that it is substantially equal to the width L2 of the distal portion 63 .
  • access ramps makes it easier for the wheel 5 to come into contact with the running surfaces, or facilitates the end of these contacts when the wheel 5 leaves the treads.

Abstract

Appareil (1) pour une voie ferrée parcourue selon une direction longitudinale (L) par un véhicule ferroviaire comportant au moins une roue (5), l'appareil comprenant un premier rail (20) et un deuxième rail (25) s'étendant longitudinalement l'un dans le prolongement de l'autre, et étant séparés par un espace (30). Les rails comprennent une portion proximale (61, 75) et une portion distale (63, 77) définissant respectivement des surfaces de roulement (69, 73, 81, 82) situées dans un même plan de roulement (P). Un dispositif central (35) s'étend longitudinalement depuis la portion proximale du premier rail jusqu'à la portion proximale du deuxième rail et forme une surface de roulement centrale (91) continue d'un premier point (A) jusqu'à un deuxième point (B) en projection sur la direction longitudinale. Un premier dispositif distal (40) et un deuxième dispositif distal (45) s'étendent longitudinalement depuis la portion distale jusqu'à la portion proximale respectivement du premier rail et du deuxième rail, et forment respectivement, dans le plan de roulement, deux surfaces de roulement supplémentaires (97, 105) continues respectivement d'un troisième point (C) jusqu'au premier point, et du deuxième point à un quatrième point (D) en projection sur la direction longitudinale. Procédé correspondant.Apparatus (1) for a track traveled in a longitudinal direction (L) by a railway vehicle having at least one wheel (5), the apparatus comprising a first rail (20) and a second rail (25) extending longitudinally one in the extension of the other, and being separated by a space (30). The rails comprise a proximal portion (61, 75) and a distal portion (63, 77) respectively defining rolling surfaces (69, 73, 81, 82) located in the same running plane (P). A central device (35) extends longitudinally from the proximal portion of the first rail to the proximal portion of the second rail and forms a continuous central tread surface (91) from a first point (A) to a second one point (B) in projection on the longitudinal direction. A first distal device (40) and a second distal device (45) extend longitudinally from the distal portion to the proximal portion respectively of the first rail and the second rail, and respectively form, in the running surface, two surfaces. additional rolling bearings (97, 105) respectively from a third point (C) to the first point, and from the second point to a fourth point (D) projecting in the longitudinal direction. Corresponding method.

Description

La présente invention concerne un appareil pour une voie ferrée destinée à être parcourue selon une direction longitudinale par un véhicule ferroviaire comportant au moins une roue, l'appareil comprenant :

  • un premier rail et un deuxième rail s'étendant longitudinalement l'un dans le prolongement de l'autre, et étant séparés par un espace, chacun du premier et du deuxième rail comprenant une portion proximale et une portion distale par rapport audit espace, les portions proximales et les portions distales définissant respectivement des surfaces de roulement pour ladite roue situées sensiblement dans un même plan de roulement défini par la direction longitudinale et une direction transversale sensiblement perpendiculaire à la direction longitudinale, la surface de roulement de la portion proximale présentant transversalement, pour chacun du premier rail et du deuxième rail, une largeur inférieure à une largeur de la surface de roulement de la portion distale, et
  • un dispositif central s'étendant longitudinalement depuis la portion proximale du premier rail jusqu'à la portion proximale du deuxième rail, le dispositif central formant, dans le plan de roulement, une surface de roulement centrale continue d'un premier point de la portion proximale du premier rail jusqu'à un deuxième point de la portion proximale du deuxième rail en projection sur la direction longitudinale.
The present invention relates to an apparatus for a railway track intended to be traversed in a longitudinal direction by a railway vehicle comprising at least one wheel, the apparatus comprising:
  • a first rail and a second rail extending longitudinally one in the extension of the other, and being separated by a space, each of the first and second rails comprising a proximal portion and a portion distal to said space, the proximal portions and the distal portions respectively defining rolling surfaces for said wheel located substantially in the same rolling plane defined by the longitudinal direction and a transverse direction substantially perpendicular to the longitudinal direction, the running surface of the proximal portion having transversely, for each of the first rail and the second rail, a width less than a width of the running surface of the distal portion, and
  • a central device extending longitudinally from the proximal portion of the first rail to the proximal portion of the second rail, the central device forming, in the rolling surface, a continuous central rolling surface of a first point of the proximal portion from the first rail to a second point of the proximal portion of the second rail projecting in the longitudinal direction.

L'invention concerne également un procédé correspondant.The invention also relates to a corresponding method.

L'appareil est par exemple un appareil de dilatation. L'espace est alors destiné à permettre une dilatation longitudinale d'au moins l'un du premier rail et du deuxième rail, ou plus généralement un mouvement relatif du premier rail par rapport au deuxième rail.The apparatus is for example a dilation apparatus. The space is then intended to allow longitudinal expansion of at least one of the first rail and the second rail, or more generally a relative movement of the first rail relative to the second rail.

Un appareil de dilatation est un dispositif permettant la libre dilatation des rails d'une voie ferrée soumis aux variations de températures. Les appareils de dilatation de type ferroviaire sont décrits notamment dans la norme EN13232-8.An expansion device is a device allowing the free expansion of the rails of a railroad subjected to temperature variations. The railway type expansion devices are described in particular in the EN13232-8 standard.

Les véhicules ferroviaires concernés sont de tous types : urbain et suburbain, et notamment tramways, trains pour la circulation à grande distance...etc.The railway vehicles concerned are of all types: urban and suburban, and in particular trams, trains for long-distance traffic ... etc.

Le but de l'appareil est de permettre à la roue du véhicule ferroviaire de passer du premier rail au deuxième rail avec une continuité d'appui, malgré la discontinuité des rails.The purpose of the apparatus is to allow the wheel of the railway vehicle to move from the first rail to the second rail with a continuity of support, despite the discontinuity of the rails.

Dans les appareils de l'art antérieur, le premier rail et le deuxième rail présentent des portions proximales amincies transversalement. Le dispositif central est un dispositif simple s'étendant longitudinalement depuis la portion proximale du premier rail jusqu'à la portion proximale du deuxième rail. Le dispositif central assure une continuité de l'appui de la roue depuis un premier point de la portion proximale du premier rail jusqu'à un deuxième point de la portion proximale du deuxième rail.In the apparatuses of the prior art, the first rail and the second rail have transversely thinned transverse portions. The central device is a simple device extending longitudinally from the proximal portion of the first rail to the proximal portion of the second rail. The central device ensures continuity of the support of the wheel from a first point of the proximal portion of the first rail to a second point of the proximal portion of the second rail.

Un tel appareil donne globalement satisfaction. Toutefois, il a parfois été observé des phénomènes d'usure et de détérioration qui, lorsqu'ils atteignent un certain degré, sont de nature à provoquer une discontinuité dans l'appui de la roue sur la voie ferrée. L'usure apparaît dans la portion proximale du premier rail et/ou du deuxième rail, dans une partie située au voisinage de la portion distale et qui ne se situe pas en regard du dispositif central. On observe à cet endroit un fluage de la matière dont est constituée la portion proximale. Une telle discontinuité est elle-même source d'usure pour le véhicule ferroviaire, de désagrément pour les passagers, et génère du bruit lorsque la roue franchit cette discontinuité.Such an apparatus gives overall satisfaction. However, it has sometimes been observed phenomena of wear and deterioration which, when they reach a certain degree, are likely to cause a discontinuity in the support of the wheel on the railway. The wear appears in the proximal portion of the first rail and / or the second rail, in a portion located in the vicinity of the distal portion and which is not facing the central device. At this point, a creep of the material of which the proximal portion is constituted is observed. Such a discontinuity is itself a source of wear for the rail vehicle, inconvenience for passengers, and generates noise when the wheel crosses this discontinuity.

Un but de l'invention est donc de pallier tout ou partie des inconvénients ci-dessus, en proposant un appareil qui empêche l'apparition d'un tel phénomène d'usure, ou bien réduise son ampleur, tout en restant simple à installer et à entretenir, et qui soit d'un coût compétitif.An object of the invention is therefore to overcome all or part of the above disadvantages, by providing an apparatus which prevents the occurrence of such a phenomenon of wear, or reduce its magnitude, while remaining simple to install and to maintain, and that is a competitive cost.

A cet effet, l'invention concerne un appareil tel que décrit ci-dessus, comprenant en outre un premier dispositif distal et un deuxième dispositif distal, chacun s'étendant longitudinalement depuis la portion distale jusqu'à la portion proximale respectivement du premier rail et du deuxième rail, le premier dispositif distal et le deuxième dispositif distal formant respectivement deux surfaces de roulement supplémentaires dans le plan de roulement, les surfaces de roulement supplémentaires étant continues respectivement d'un troisième point de la portion distale du premier rail jusqu'au premier point, et du deuxième point à un quatrième point de la portion distale du deuxième rail en projection sur la direction longitudinale.To this end, the invention relates to an apparatus as described above, further comprising a first distal device and a second distal device, each extending longitudinally from the distal portion to the proximal portion respectively of the first rail and the second rail, the first distal device and the second distal device respectively forming two additional running surfaces in the running surface, the additional running surfaces being continuous respectively from a third point of the distal portion of the first rail to the first point, and the second point at a fourth point of the distal portion of the second rail projecting on the longitudinal direction.

Selon des modes particuliers de réalisation, l'appareil comprend l'une ou plusieurs des caractéristiques suivantes, prise(s) isolément ou selon toutes les combinaisons techniquement possibles :

  • l'un ou plusieurs du premier dispositif distal, du deuxième dispositif distal, et du dispositif central est ou sont constitué(s) d'une seule pièce métallique ;
  • l'un ou plusieurs du premier dispositif distal, du deuxième dispositif distal, et du dispositif central est ou sont constitué(s) d'une portion de rail orientée longitudinalement ;
  • au moins deux du premier dispositif distal, du deuxième dispositif distal, et du dispositif central sont venus de matière ;
  • le dispositif central est situé transversalement sensiblement contre les parties proximales du premier rail et du deuxième rail ;
  • la surface de roulement centrale présente transversalement une largeur sensiblement constante selon la direction longitudinale ;
  • la largeur de la surface de roulement centrale est supérieure ou égale à la largeur de la surface de roulement de la portion distale du premier rail, de préférence sensiblement égale à la largeur de la surface de roulement de la portion distale du premier rail ;
  • le premier dispositif distal et/ou le deuxième dispositif distal sont situés dans le prolongement longitudinal du dispositif central, les surfaces de roulement de l'un et ou l'autre du premier dispositif distal et du deuxième dispositif distal ayant de préférence un bord destiné à être transversalement externe par rapport à la voie ferrée, ledit bord étant situé dans le prolongement longitudinal d'un bord du dispositif central destiné à être transversalement externe par rapport à la voie ferrée ;
  • le premier dispositif distal et/ou le deuxième dispositif distal comportent respectivement une surface supérieure formant une rampe d'accès à leurs surfaces de roulement pour ladite roue ;
  • les surfaces de roulement du premier dispositif distal et/ou du deuxième dispositif distal présentent transversalement une largeur sensiblement constante selon la direction longitudinale dans les parties principales ;
  • la largeur des surfaces de roulement du premier dispositif distal et/ou du deuxième dispositif distal est supérieure ou égale à la largeur de la surface de roulement de la portion proximale du premier rail, de préférence sensiblement égale à la largeur de la surface de roulement de la portion proximale du premier rail ;
  • le véhicule ferroviaire est un tramway, le premier rail et le deuxième rail définissant une gorge destinée à coopérer avec la roue ; et
  • l'appareil est un appareil de dilatation, l'espace étant destiné à permettre un mouvement relatif du premier rail par rapport au deuxième rail, notamment une dilatation longitudinale d'au moins l'un du premier rail et du deuxième rail.
According to particular embodiments, the apparatus comprises one or more of the following characteristics, taken individually or in any technically possible combination:
  • one or more of the first distal device, the second distal device, and the central device is or consist of a single metal part;
  • one or more of the first distal device, the second distal device, and the central device is or consist of a longitudinally oriented rail portion;
  • at least two of the first distal device, the second distal device, and the central device are integral;
  • the central device is located transversely substantially against the proximal portions of the first rail and the second rail;
  • the central running surface has a transverse width substantially constant in the longitudinal direction;
  • the width of the central running surface is greater than or equal to the width of the running surface of the distal portion of the first rail, preferably substantially equal to the width of the running surface of the distal portion of the first rail;
  • the first distal device and / or the second distal device are located in the longitudinal extension of the central device, the running surfaces of one or the other of the first distal device and the second distal device preferably having an edge intended to be transversely external to the railway, said edge being located in the longitudinal extension of an edge of the central device intended to be transversely external to the railway;
  • the first distal device and / or the second distal device respectively comprise an upper surface forming a ramp for access to their tread surfaces for said wheel;
  • the running surfaces of the first distal device and / or the second distal device transversely have a substantially constant width in the longitudinal direction in the main parts;
  • the width of the running surfaces of the first distal device and / or the second distal device is greater than or equal to the width of the running surface of the proximal portion of the first rail, preferably substantially equal to the width of the running surface of the the proximal portion of the first rail;
  • the railway vehicle is a tramway, the first rail and the second rail defining a groove for cooperating with the wheel; and
  • the apparatus is a dilatation apparatus, the space being adapted to allow relative movement of the first rail relative to the second rail, including longitudinal expansion of at least one of the first rail and the second rail.

L'invention a également pour objet un procédé comprenant les étapes suivantes :

  • parcours d'une voie ferrée selon une direction longitudinale par un véhicule ferroviaire comportant au moins une roue ;
  • fourniture d'un premier rail et d'un deuxième rail s'étendant longitudinalement l'un dans le prolongement de l'autre, et étant séparés par un espace destiné à permettre une dilatation longitudinale d'au moins l'un du premier rail et du deuxième rail, chacun du premier rail et du deuxième rail comprenant une portion proximale et une portion distale par rapport audit espace, les portions proximales et les portions distales définissant respectivement des surfaces de roulement pour ladite roue sensiblement dans un plan de roulement défini par la direction longitudinale et une direction transversale sensiblement perpendiculaire à la direction longitudinale, la surface de roulement de la portion proximale présentant transversalement, pour chacun du premier rail et du deuxième rail, une largeur inférieure à une largeur de la surface de roulement de la portion distale ;
  • fourniture d'un dispositif central s'étendant longitudinalement depuis la portion proximale du premier rail jusqu'à la portion proximale du deuxième rail, le dispositif central formant, dans le plan de roulement, une surface de roulement centrale continue d'un premier point de la portion proximale du premier rail jusqu'à un deuxième point de la portion proximale du deuxième rail en projection sur la direction longitudinale ; et
  • fourniture d'un premier dispositif distal et d'un deuxième dispositif distal, chacun s'étendant longitudinalement depuis la portion distale jusqu'à la portion proximale respectivement du premier rail et du deuxième rail, le premier dispositif distal et le deuxième dispositif distal formant respectivement deux surfaces de roulement supplémentaires dans le plan de roulement, les surfaces de roulement supplémentaires étant continues respectivement d'un troisième point de la portion distale du premier rail jusqu'au premier point, et du deuxième point à un quatrième point de la portion distale du deuxième rail en projection sur la direction longitudinale.
The subject of the invention is also a method comprising the following steps:
  • course of a railway in a longitudinal direction by a railway vehicle comprising at least one wheel;
  • providing a first rail and a second rail extending longitudinally one in line with the other, and being separated by a space for longitudinal expansion of at least one of the first rail and of the second rail, each of the first rail and the second rail comprising a proximal portion and a portion distal to said space, the proximal portions and the distal portions respectively defining rolling surfaces for said wheel substantially in a rolling plane defined by the longitudinal direction and a transverse direction substantially perpendicular to the longitudinal direction, the running surface of the portion transversely presenting, for each of the first rail and the second rail, a width less than a width of the running surface of the distal portion;
  • providing a central device extending longitudinally from the proximal portion of the first rail to the proximal portion of the second rail, the central device forming, in the rolling surface, a continuous central rolling surface of a first point of the proximal portion of the first rail to a second point of the proximal portion of the second rail projecting in the longitudinal direction; and
  • providing a first distal device and a second distal device, each extending longitudinally from the distal portion to the proximal portion respectively of the first rail and the second rail, the first distal device and the second distal device respectively forming two additional running surfaces in the running surface, the additional running surfaces being continuous respectively from a third point of the distal portion of the first rail to the first point, and from the second point to a fourth point of the distal portion of the first second rail projecting on the longitudinal direction.

L'invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d'exemple et faite en se référant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue de dessus d'un appareil selon l'invention, dans lequel le couvercle du boîtier a été retiré, et
  • les figures 2 à 8 sont des vues en coupe successives de l'appareil représenté sur la figure 1, selon des plans perpendiculaires à une direction longitudinale de l'appareil, chaque vue montrant comment la roue du véhicule ferroviaire appuie successivement sur les différentes parties de l'appareil.
The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings, in which:
  • the figure 1 is a top view of an apparatus according to the invention, in which the housing cover has been removed, and
  • the Figures 2 to 8 are successive sectional views of the apparatus shown on the figure 1 , in planes perpendicular to a longitudinal direction of the apparatus, each view showing how the wheel of the railway vehicle presses successively on the different parts of the apparatus.

En référence à la figure 1, on décrit un appareil 1 pour une voie ferrée (non représentée) destinée à être parcourue selon une direction longitudinale L par un véhicule ferroviaire (non totalement représenté) comportant au moins une roue 5 visible sur les figures 2 à 8.With reference to the figure 1 an apparatus 1 is described for a railway (not shown) intended to be traversed in a longitudinal direction L by a railway vehicle (not completely shown) comprising at least one wheel 5 visible on the Figures 2 to 8 .

Une telle voie ferrée comporte en général deux rails sensiblement parallèles l'un à l'autre. Si ces rails étaient représentés sur la figure 1, l'un d'entre eux s'étendrait longitudinalement de part et d'autre de l'appareil 1.Such a railway generally comprises two rails substantially parallel to each other. If these rails were represented on the figure 1 , one of them would extend longitudinally on both sides of the apparatus 1.

Dans l'exemple représenté, le véhicule ferroviaire est un tramway. Selon des variantes non représentées, le véhicule ferroviaire est de tout autre type connu, notamment suburbain, régional ou TGV (trains à grande vitesse, pour trajets nationaux ou internationaux).In the example shown, the railway vehicle is a tramway. According to variants not shown, the railway vehicle is of any other known type, including suburban, regional or TGV (high-speed trains, for national or international routes).

La roue 5 est par exemple une roue de tramway classique. La roue 5 comprend une bande de roulement 10 et un boudin 15 (figure 2).The wheel 5 is for example a conventional tram wheel. The wheel 5 comprises a tread 10 and a flange 15 ( figure 2 ).

La bande de roulement 10 est par exemple conique. La bande de roulement 10 est adaptée pour rouler sur l'appareil selon un plan de roulement P défini par la direction longitudinale L et par une direction transversale T sensiblement perpendiculaire à la direction longitudinale.The tread 10 is for example conical. The tread 10 is adapted to roll on the apparatus according to a rolling plane P defined by the longitudinal direction L and by a transverse direction T substantially perpendicular to the longitudinal direction.

La direction transversale T est une génératrice de la surface conique définie par la bande de roulement 10.The transverse direction T is a generatrix of the conical surface defined by the tread 10.

En référence à la figure 1, l'appareil 1 comprend un premier rail 20 et un deuxième rail 25 s'étendant longitudinalement l'un dans le prolongement de l'autre, et séparé par un espace 30. L'appareil 1 comprend aussi un dispositif central 35, un premier dispositif distal 40, et un deuxième dispositif distal 45. Le véhicule ferroviaire étant dans l'exemple un tramway, l'appareil 1 comprend enfin optionnellement un boîtier 50 qui affleure à la surface du sol 55.With reference to the figure 1 , the apparatus 1 comprises a first rail 20 and a second rail 25 extending longitudinally one in the extension of the other, and separated by a space 30. The apparatus 1 also comprises a central device 35, a first distal device 40, and a second distal device 45. The rail vehicle being in the example a tram, the apparatus 1 finally optionally comprises a housing 50 which is flush with the surface of the ground 55.

L'appareil 1 est par exemple un appareil de dilatation.The apparatus 1 is for example a dilation apparatus.

L'espace 30 est destiné à permettre une dilatation longitudinale du premier rail (20) et/ou du deuxième rail (25).The space 30 is intended to allow longitudinal expansion of the first rail (20) and / or the second rail (25).

Le boîtier 50 forme un coffrage autour des autres parties de l'appareil 1. Le boîtier 50 comporte un couvercle 57 (figure 2), avantageusement amovible, s'étendant sensiblement en continuité avec le sol 55. Le couvercle 57 définit une ouverture 59 s'étendant longitudinalement pour permettre à la roue 5 de rouler sur les autres parties de l'appareil 1.The casing 50 forms a form around the other parts of the apparatus 1. The casing 50 comprises a cover 57 ( figure 2 ), advantageously removable, extending substantially in continuity with the ground 55. The cover 57 defines an opening 59 extending longitudinally to allow the wheel 5 to roll over the other parts of the apparatus 1.

Selon un mode particulier de réalisation, le couvercle 57 est en deux parties situées transversalement de part et d'autre des autres parties de l'appareil 1.According to a particular embodiment, the cover 57 is in two parts located transversely on either side of the other parts of the apparatus 1.

Dans l'exemple représenté, l'appareil 1 est sensiblement symétrique par rapport à un plan P' perpendiculaire à la direction longitudinale L et situé longitudinalement au niveau de l'espace 30.In the example shown, the apparatus 1 is substantially symmetrical with respect to a plane P 'perpendicular to the longitudinal direction L and situated longitudinally at the level of the space 30.

Dans la présente demande, les termes « proximal » et « distal » s'entendent par rapport à l'espace 30.In the present application, the terms "proximal" and "distal" refer to the space 30.

Le premier rail 20 comprend une portion proximale 61, une portion distale 63, et une portion de transition 65 située longitudinalement entre la portion proximale et la portion distale. Le premier rail 20 définit une gorge 67 prévue pour recevoir le boudin 15 (figure 2).The first rail 20 comprises a proximal portion 61, a distal portion 63, and a transition portion 65 located longitudinally between the proximal portion and the distal portion. The first rail 20 defines a groove 67 designed to receive the flange 15 ( figure 2 ).

On définit en outre selon la direction transversale T un sens externe et un sens interne par rapport à la voie ferrée. Ainsi, le boudin 15 se situe du côté interne de la roue 5.In the transverse direction T, an external direction and an internal direction with respect to the railway are also defined. Thus, the flange 15 is located on the inner side of the wheel 5.

La portion proximale 61 définit une surface de roulement 69 dans le plan de roulement P. La portion proximale 61 comporte optionnellement une surface supérieure 71 inclinée par rapport au plan de roulement P et adaptée pour former une rampe d'accès à la surface de roulement 69 pour la roue 5 lorsque cette dernière roule de droite à gauche sur la figure 1.The proximal portion 61 defines a running surface 69 in the rolling surface P. The proximal portion 61 optionally has an upper surface 71 inclined relative to the rolling surface P and adapted to form a ramp for access to the running surface 69 for the wheel 5 when the latter rolls from right to left on the figure 1 .

La surface de roulement 69 présente transversalement une largeur L1 (figure 5) avantageusement sensiblement constante selon la direction longitudinale L.The running surface 69 has a transverse width L1 ( figure 5 ) advantageously substantially constant in the longitudinal direction L.

Comme visible sur la figure 1, la portion distale 63 comporte une première partie 63A correspondant avantageusement au rail « courant » de la voie ferrée, une deuxième partie 63B présentant un premier amincissement transversal, et une partie de transition 63C située longitudinalement entre la première partie et la deuxième partie. LAs visible on the figure 1 , the distal portion 63 comprises a first portion 63A advantageously corresponding to the rail "current" of the railway, a second portion 63B having a first transverse thinning, and a transition portion 63C located longitudinally between the first portion and the second portion. The

La partie 63B est avantageusement amincie uniquement au niveau du champignon (partie supérieure adaptée au contact avec la roue 10).Part 63B is advantageously thinned only at the level of the mushroom (upper part adapted to contact with the wheel 10).

La portion distale 63 définit une surface de roulement 73 dans le plan P présentant transversalement une largeur L2 (figures 2 à 4) avantageusement sensiblement constante selon la direction longitudinale L.The distal portion 63 defines a rolling surface 73 in the plane P having transversely a width L2 ( Figures 2 to 4 ) advantageously substantially constant in the longitudinal direction L.

La surface de roulement 73 n'est, par exemple, pas affectée par le premier amincissement, c'est-à-dire que la partie de champignon manquante du fait du premier amincissement n'est pas destinée à être en contact avec la roue 10.The running surface 73 is, for example, not affected by the first thinning, that is to say that the part of the missing mushroom due to the first thinning is not intended to be in contact with the wheel 10 .

La largeur L2 est supérieure à la largeur L1 et mesure par exemple environ le double de celle-ci.The width L2 is greater than the width L1 and measures for example about twice that of the latter.

La structure du deuxième rail 25 se déduit de celle du premier rail 20 par symétrie par rapport au plan P'. Le rail 25 comprend une portion proximale 75, une portion distale 77, et une portion de transition 79 (figure 1).The structure of the second rail 25 is deduced from that of the first rail 20 by symmetry with respect to the plane P '. The rail 25 comprises a proximal portion 75, a distal portion 77, and a transition portion 79 ( figure 1 ).

La portion proximale 75 définit une surface de roulement 81 dans le plan de roulement P et comporte une surface supérieure 83 formant une rampe d'accès.The proximal portion 75 defines a running surface 81 in the rolling plane P and has an upper surface 83 forming an access ramp.

Comme visible sur la figure 1, la portion distale 77 comporte une première partie 77A, une deuxième partie 77B présentant un premier amincissement transversal, et une partie de transition 77C.La portion distale 77 définit une surface de roulement 82.As visible on the figure 1 the distal portion 77 includes a first portion 77A, a second portion 77B having a first transverse thinning, and a transition portion 77C.The distal portion 77 defines a rolling surface 82.

Le dispositif central 35, le premier dispositif distal 40, et le deuxième dispositif distal 45 forment par exemple une seule pièce, avantageusement métallique. Ces trois éléments forment avantageusement une portion de rail comportant (figure 3) un patin 85 solidaire du sol, un champignon 87, et une âme 89 reliant le champignon au patin.The central device 35, the first distal device 40, and the second distal device 45 form for example a single piece, preferably metal. These three elements advantageously form a portion of rail comprising figure 3 ) a shoe 85 secured to the ground, a mushroom 87, and a core 89 connecting the mushroom to the shoe.

Comme visible sur la figure 1, le dispositif central 35 s'étend longitudinalement depuis la portion proximale 61 du premier rail 20 jusqu'à la portion proximale 75 du deuxième rail 25. Le dispositif central 35 forme, dans le plan de roulement P, une surface de roulement centrale 91 (figures 1, et 6 à 8). Le dispositif central 35 est sensiblement symétrique par rapport au plan P'.As visible on the figure 1 , the central device 35 extends longitudinally from the proximal portion 61 of the first rail 20 to the proximal portion 75 of the second rail 25. The central device 35 forms, in the rolling plane P, a surface central bearing 91 ( figures 1 , and 6 to 8 ). The central device 35 is substantially symmetrical with respect to the plane P '.

La surface de roulement centrale 91 présente transversalement une largeur L3 avantageusement sensiblement constante selon la direction longitudinale L. La surface de roulement centrale 91 est continue d'un premier point A de la portion proximale 61 du premier rail 20 jusqu'à un deuxième point B de la portion proximale 75 du deuxième rail 25 en projection sur la direction longitudinale L.The central tread surface 91 has transversely a width L3 advantageously substantially constant in the longitudinal direction L. The central tread surface 91 is continuous from a first point A of the proximal portion 61 of the first rail 20 to a second point B of the proximal portion 75 of the second rail 25 in projection on the longitudinal direction L.

Dit autrement, si l'on projette la surface de roulement centrale 91 sur la direction longitudinale L selon le plan de roulement P, cette projection est continue du premier point A jusqu'au deuxième point B.In other words, if the central running surface 91 is projected on the longitudinal direction L along the rolling plane P, this projection is continuous from the first point A to the second point B.

Par exemple, la largeur L3 est supérieure ou égale à la largueur L2, de préférence sensiblement égale à la largeur L2.For example, the width L3 is greater than or equal to the width L2, preferably substantially equal to the width L2.

Le dispositif central 35 est situé transversalement sensiblement contre les parties proximales 61, 75 du premier rail 20 et du deuxième rail 25.The central device 35 is located transversely substantially against the proximal portions 61, 75 of the first rail 20 and the second rail 25.

Le premier dispositif distal 40 et le deuxième dispositif distal 45 sont sensiblement symétriques l'un de l'autre par rapport au plan P'.The first distal device 40 and the second distal device 45 are substantially symmetrical to one another with respect to the plane P '.

Le premier dispositif distal 40 s'étend longitudinalement depuis la portion distale 63 jusqu'à la portion proximale 61 du premier rail 20 (figure 1). Le premier dispositif distal 40 est par exemple situé transversalement contre la portion distale 63. Le premier dispositif distal comprend une portion principale 93, et une portion de transition 95 située longitudinalement entre la portion principale 93 et le dispositif central 35.The first distal device 40 extends longitudinally from the distal portion 63 to the proximal portion 61 of the first rail 20 ( figure 1 ). The first distal device 40 is for example located transversely against the distal portion 63. The first distal device comprises a main portion 93, and a transition portion 95 located longitudinally between the main portion 93 and the central device 35.

Dans l'exemple représenté sur la figure 1, le premier dispositif distal 40 s'étend longitudinalement depuis la deuxième partie 63A de la portion distale 63 jusqu'à la portion proximale 61 du premier rail 20.In the example shown on the figure 1 the first distal device 40 extends longitudinally from the second portion 63A of the distal portion 63 to the proximal portion 61 of the first rail 20.

Le premier dispositif distal 40 définit une surface de roulement supplémentaire 97 dans le plan de roulement P, et comprend avantageusement une rampe d'accès 99 adaptée pour faciliter l'accès de la roue 5 à la surface de roulement supplémentaire 97.The first distal device 40 defines an additional running surface 97 in the running surface P, and advantageously comprises an access ramp 99 adapted to facilitate access of the wheel 5 to the additional running surface 97.

Avantageusement, la surface de roulement supplémentaire 97 présente transversalement, dans la portion principale 93, une largeur L4 sensiblement constante selon la direction longitudinale L.Advantageously, the additional running surface 97 has transversely, in the main portion 93, a width L4 substantially constant in the longitudinal direction L.

La largeur L4 est par exemple supérieure ou égale à la largeur L1, de préférence sensiblement égale à la largeur L1. La surface de roulement supplémentaire 97 est continue d'un troisième point C de la partie proximale 63 du premier rail 20 jusqu'au premier point A en projection sur la direction longitudinale L.The width L4 is for example greater than or equal to the width L1, preferably substantially equal to the width L1. The additional running surface 97 is continuous from a third point C of the proximal portion 63 of the first rail 20 to the first point A in projection on the longitudinal direction L.

Le premier amincissement de la portion distale 63 du premier rail 20 permet de maximiser la largeur L4. En effet, en l'absence du premier amincissement transversal, le premier dispositif distal 40 serait transversalement plus éloigné de la surface de roulement 73.The first thinning of the distal portion 63 of the first rail 20 maximizes the width L4. Indeed, in the absence of the first transverse thinning, the first distal device 40 would be transversely further away from the running surface 73.

Le deuxième dispositif distal 45 étant sensiblement symétrique du premier dispositif distal 40 par rapport au plan P', le deuxième dispositif distal ne sera pas décrit en détail.The second distal device 45 being substantially symmetrical with the first distal device 40 with respect to the plane P ', the second distal device will not be described in detail.

Le deuxième dispositif distal 45 comprend une portion principale 101 et une portion de transition 103. Le deuxième dispositif distal 45 définit une surface de roulement supplémentaire 105 et comporte avantageusement une rampe d'accès 107.The second distal device 45 comprises a main portion 101 and a transition portion 103. The second distal device 45 defines an additional running surface 105 and advantageously comprises an access ramp 107.

Le premier dispositif distal 40, le dispositif central 35 et le deuxième dispositif distal 45 définissent par exemple un bord externe 109 sensiblement rectiligne et parallèle à la direction longitudinale L.The first distal device 40, the central device 35 and the second distal device 45 define for example an outer edge 109 substantially rectilinear and parallel to the longitudinal direction L.

La surface de roulement supplémentaire 105 est continue du deuxième point B jusqu'à un quatrième point D de la portion distale 77 du deuxième rail 25 en projection sur la direction longitudinale L.The additional running surface 105 is continuous from the second point B to a fourth point D of the distal portion 77 of the second rail 25 in projection on the longitudinal direction L.

Le fonctionnement de l'appareil 1 va maintenant être décrit.The operation of the apparatus 1 will now be described.

En fonctionnement, le premier rail 20 et le deuxième rail 25 sont susceptibles de se dilater ou de se contracter longitudinalement sous l'effet de changement de température. Ceci a pour effet d'augmenter ou de diminuer la longueur de l'espace 30. Le rôle de l'appareil 1 est de permettre au véhicule ferroviaire (non représenté) de franchir l'espace 30.In operation, the first rail 20 and the second rail 25 are likely to expand or contract longitudinally under the effect of temperature change. This has the effect of increasing or decreasing the length of the space 30. The role of the apparatus 1 is to allow the railway vehicle (not shown) to cross the space 30.

On décrit ci-après comment la roue 5 du véhicule ferroviaire interagit avec l'appareil 1 pour franchir l'espace 30.Hereinafter described how the wheel 5 of the railway vehicle interacts with the apparatus 1 to cross the space 30.

En référence à la figure 1, le véhicule ferroviaire arrive par exemple longitudinalement depuis le côté gauche. S'il arrivait par le côté droit, les étapes ci-après seraient simplement inversées temporellement.With reference to the figure 1 , the railway vehicle arrives for example longitudinally from the left side. If it came from the right side, the following steps would simply be reversed temporally.

La roue 5 roule sur un rail (non représenté), situé dans le prolongement du premier rail 20. Puis la roue 5 arrive sur le premier rail 20.The wheel 5 rolls on a rail (not shown), located in the extension of the first rail 20. Then the wheel 5 arrives on the first rail 20.

Comme visible sur la figure 2, la bande de roulement 10 de la roue 5 roule alors sur la surface de roulement 73 définie par la portion distale 63 du premier rail 20. Le boudin 15 se situe alors dans la gorge 67, ce qui assure un guidage transversal de la roue 5.As visible on the figure 2 the tread 10 of the wheel 5 then rolls on the running surface 73 defined by the distal portion 63 of the first rail 20. The strand 15 is then in the groove 67, which ensures a transverse guidance of the wheel 5 .

La roue 5 continue d'avancer sur la portion distale 63. Comme visible sur la figure 3, la roue 5 se situe au-dessus de la rampe d'accès 99 du premier dispositif distal 40, mais n'est pas encore en contact avec ce dernier. La roue 5 continue d'appuyer sur la surface de roulement 73. La largeur de l'appui est toujours la largeur L2 de la bande de roulement 73.The wheel 5 continues to advance on the distal portion 63. As visible on the figure 3 , the wheel 5 is above the access ramp 99 of the first distal device 40, but is not yet in contact with the latter. The wheel 5 continues to press on the running surface 73. The width of the support is always the width L2 of the tread 73.

Pour les mêmes raisons déjà mentionnées plus haut, le premier amincissement transversal du rail 20 permet de maximiser la largeur de la rampe d'accès 99 du côté de la portion distale 63 du premier rail 20.For the same reasons already mentioned above, the first transverse thinning of the rail 20 makes it possible to maximize the width of the access ramp 99 on the side of the distal portion 63 of the first rail 20.

Ayant avancé un peu plus, la roue 5 vient en contact avec la rampe d'accès 99 et arrive (figure 4) sur la bande de roulement supplémentaire 97 définie par le premier dispositif distal 40. La largeur de l'appui est alors la somme des largeurs L2 et L4. A peu près au niveau du plan de coupe de la figure 4, la roue 5 passe longitudinalement au niveau du troisième point C (figure 1).Having advanced a little further, the wheel 5 comes into contact with the access ramp 99 and arrives ( figure 4 ) on the additional tread 97 defined by the first distal device 40. The width of the support is then the sum of the widths L2 and L4. Roughly at the cutting plane of the figure 4 , the wheel 5 passes longitudinally at the third point C ( figure 1 ).

Continuant d'avancer, la roue 5 passe de la portion distale 63 à la portion proximale 61 (figure 5). La roue 5 roule sur la surface de roulement 69 de la portion proximale 61 présentant la largeur L1 plus faible que la largeur L2. Toutefois, grâce à la présence du premier dispositif distal 40, l'appui est complété par la surface de roulement supplémentaire 97.Continuing to advance, the wheel 5 passes from the distal portion 63 to the proximal portion 61 ( figure 5 ). The wheel 5 rolls on the running surface 69 of the proximal portion 61 having the width L1 smaller than the width L2. However, thanks to the presence of the first distal device 40, the support is completed by the additional rolling surface 97.

Dans les dispositifs de l'art antérieur, le premier dispositif distal étant absent, la largeur de l'appui correspond à la largeur L1. Des phénomènes d'usure par fluage de la surface supérieure du premier rail 20 apparaissent éventuellement à cet endroit dans les dispositifs de l'art antérieur.In the devices of the prior art, the first distal device being absent, the width of the support corresponds to the width L1. Creep wear phenomena of the upper surface of the first rail 20 may occur at this point in the devices of the prior art.

La roue continuant d'avancer (figure 6), elle passe sans discontinuité du premier dispositif distal 40 au dispositif central 35. La roue 5 est alors en appui sur la surface de roulement 69 du premier rail 20 et sur la surface de roulement centrale 91 du dispositif central 35. La largeur de l'appui est la somme des largeurs L1 et L3.The wheel continues to advance ( figure 6 ), it passes continuously from the first distal device 40 to the central device 35. The wheel 5 is then resting on the rolling surface 69 of the first rail 20 and on the central bearing surface 91 of the central device 35. The width of the 'support is the sum of the widths L1 and L3.

Ensuite, la roue 5 avance et arrive au-dessus de la rampe d'accès 71 du premier rail 20. Le contact entre la roue 5 et la partie proximale 61 s'interrompt (figure 7). La roue 5 est alors en appui uniquement sur le dispositif central 35. La largeur de l'appui est égale à la largeur L3.Then, the wheel 5 advances and arrives above the access ramp 71 of the first rail 20. The contact between the wheel 5 and the proximal portion 61 stops ( figure 7 ). The wheel 5 is then supported only on the central device 35. The width of the support is equal to the width L3.

La roue 5 avance encore pour se situer au-dessus de l'espace 30. La roue 5 est alors toujours en appui sur le dispositif central 35, avec une largeur d'appui L3.The wheel 5 still advances to be above the space 30. The wheel 5 is then always resting on the central device 35, with a bearing width L3.

Enfin la roue 5 poursuit sa progression vers la droite sur la figure 1 et, du fait de la symétrie par rapport au plan P', les mêmes étapes se produisent dans l'ordre inverse. En particulier, la roue 5 passe longitudinalement du deuxième point B au quatrième point D de manière continue grâce à la surface de roulement supplémentaire 105 du deuxième dispositif distal 45.Finally the wheel 5 continues its progression to the right on the figure 1 and, because of the symmetry with respect to the plane P ', the same steps occur in the reverse order. In particular, the wheel 5 passes longitudinally from the second point B to the fourth point D in a continuous manner thanks to the additional running surface 105 of the second distal device 45.

La surface de roulement supplémentaire 105 offre une largeur d'appui L4 à un moment où, dans les dispositifs de l'art antérieur, la largeur d'appui est seulement égale à L1. Ainsi, le risque d'usure par fluage à proximité de la portion de transition 79 du deuxième rail 25 est fortement réduit dans le dispositif selon l'invention.The additional tread surface 105 provides a bearing width L4 at a time when, in the prior art devices, the bearing width is only equal to L1. Thus, the risk of creep wear near the transition portion 79 of the second rail 25 is greatly reduced in the device according to the invention.

Grâce aux caractéristiques décrites ci-dessus, l'appui de la roue 5 est continu non seulement du premier point A au deuxième point B, mais aussi du troisième point C au premier point A, et du deuxième point B au quatrième point D, ce qui fournit des appuis supplémentaires pour la roue 5. Les risques d'usure sont forcément réduits voire annulés.Thanks to the characteristics described above, the support of the wheel 5 is continuous not only from the first point A to the second point B, but also from the third point C to the first point A, and from the second point B to the fourth point D. which provides additional support for the wheel 5. The risks of wear are necessarily reduced or canceled.

Grâce aux caractéristiques décrites ci-dessus, l'appareil 1 est simple à mettre en oeuvre et d'un coût compétitif.Thanks to the characteristics described above, the apparatus 1 is simple to implement and at a competitive cost.

Il est à noter que le premier dispositif distal 40, le dispositif central 35 et le deuxième dispositif distal 45 offrent une bande de roulement physiquement continue depuis le troisième point C jusqu'au quatrième point D. Toutefois, selon des modes de réalisation particuliers non représentés, la continuité n'est pas physique, mais seulement en projection sur la direction longitudinale L. En effet, il est possible de réaliser l'un ou l'autre du premier dispositif distal 40, du dispositif central 35 et du deuxième dispositif distal 45 de telle manière que ces dispositifs ne soient pas venus de matière, ni chacun en une seule pièce. Dans ces modes de réalisation particuliers, il n'y a pas de continuité physique de la bande de roulement, mais seulement une continuité en projection sur la direction longitudinale L, ce qui est suffisant pour assurer un appui continu pour la roue 5.It should be noted that the first distal device 40, the central device 35 and the second distal device 45 offer a physically continuous tread from the third point C to the fourth point D. However, according to particular embodiments not shown , the continuity is not physical, but only in projection on the longitudinal direction L. Indeed, it is possible to achieve one or the other of the first distal device 40, the central device 35 and the second distal device 45 in such a way that these devices did not come from material, nor each in one piece. In these particular embodiments, there is no physical continuity of the tread, but only continuity in projection on the longitudinal direction L, which is sufficient to ensure a continuous support for the wheel 5.

La caractéristique optionnelle selon laquelle le premier dispositif distal 35, le deuxième dispositif distal 45 et le dispositif central 35 sont venus de matière et/ou constitués d'un rail permet de simplifier l'appareil 1.The optional feature according to which the first distal device 35, the second distal device 45 and the central device 35 are made of material and / or constituted by a rail makes it possible to simplify the device 1.

Le fait que la largeur L4 soit au moins égale à la largeur L1 permet au moins de doubler la largeur de roulement entre le troisième point C et le premier point A et, dans l'exemple représenté, d'obtenir une largeur de roulement L1 + L4 supérieure ou égale à la largeur L2 de la surface de roulement de la portion distale 63 du premier rail 20.The fact that the width L4 is at least equal to the width L1 allows at least to double the rolling width between the third point C and the first point A and, in the example shown, to obtain a rolling width L1 + L4 greater than or equal to the width L2 of the running surface of the distal portion 63 of the first rail 20.

Le premier amincissement optionnel du premier rail 20 permet de maximiser la largeur L4.The first optional thinning of the first rail 20 makes it possible to maximize the width L4.

Le fait que la largeur L3 de la surface de roulement centrale 91 soit au moins égale à la largeur L2 permet d'obtenir une largeur de roulement au moins égale à L2 lorsque la roue 5 est en appui uniquement sur le dispositif central 35.The fact that the width L3 of the central running surface 91 is at least equal to the width L2 makes it possible to obtain a rolling width at least equal to L2 when the wheel 5 bears only on the central device 35.

Tant que la roue 5 est également en appui sur la partie proximale 61, la largeur de roulement est égale à la somme L1 + L3, qui est strictement supérieure à la largeur L2 de la surface de roulement de la portion distale 63 du premier rail 20.As long as the wheel 5 is also resting on the proximal portion 61, the rolling width is equal to the sum L1 + L3, which is strictly greater than the width L2 of the running surface of the distal portion 63 of the first rail 20 .

Lorsque la roue 5 n'est en appui que sur le dispositif central 35, la largeur de roulement est exactement égale à la largeur L3, c'est-à-dire qu'elle est sensiblement égale à la largeur L2 de la portion distale 63.When the wheel 5 bears only on the central device 35, the rolling width is exactly equal to the width L3, that is to say that it is substantially equal to the width L2 of the distal portion 63 .

La présence optionnelle de rampes d'accès facilite la mise en contact de la roue 5 avec les surfaces de roulement, ou bien facilite la fin de ces contacts lorsque la roue 5 quitte les bandes de roulement.The optional presence of access ramps makes it easier for the wheel 5 to come into contact with the running surfaces, or facilitates the end of these contacts when the wheel 5 leaves the treads.

Claims (14)

Appareil (1) pour une voie ferrée destinée à être parcourue selon une direction longitudinale (L) par un véhicule ferroviaire comportant au moins une roue (5), l'appareil (1) comprenant : - un premier rail (20) et un deuxième rail (25) s'étendant longitudinalement l'un dans le prolongement de l'autre, et étant séparés par un espace (30), chacun du premier et du deuxième rail (25) comprenant une portion proximale (61, 75) et une portion distale (63, 77) par rapport audit espace (30), les portions proximales (61, 75) et les portions distales (63, 77) définissant respectivement des surfaces de roulement (69, 73, 81, 82) pour ladite roue (5) situées sensiblement dans un même plan de roulement (P) défini par la direction longitudinale (L) et une direction transversale (T) sensiblement perpendiculaire à la direction longitudinale (L), la surface de roulement (69, 81) de la portion proximale (61, 75) présentant transversalement, pour chacun du premier rail (20) et du deuxième rail (25), une largeur (L1) inférieure à une largeur (L2) de la surface de roulement (73, 82) de la portion distale (63, 77), et - un dispositif central (35) s'étendant longitudinalement depuis la portion proximale (61) du premier rail (20) jusqu'à la portion proximale (75) du deuxième rail (25), le dispositif central (35) formant, dans le plan de roulement (P), une surface de roulement centrale (91) continue d'un premier point (A) de la portion proximale (61) du premier rail (20) jusqu'à un deuxième point (B) de la portion proximale (75) du deuxième rail (25) en projection sur la direction longitudinale (L), caractérisé en ce qu'il comprend en outre un premier dispositif distal (40) et un deuxième dispositif distal (45), chacun s'étendant longitudinalement depuis la portion distale (63, 77) jusqu'à la portion proximale (61, 75) respectivement du premier rail (20) et du deuxième rail (25), le premier dispositif distal (40) et le deuxième dispositif distal (45) formant respectivement deux surfaces de roulement supplémentaires (97, 105) dans le plan de roulement (P), les surfaces de roulement supplémentaires (97, 105) étant continues respectivement d'un troisième point (C) de la portion distale (63) du premier rail (20) jusqu'au premier point (A), et du deuxième point (B) à un quatrième point (D) de la portion distale (77) du deuxième rail (25) en projection sur la direction longitudinale (L).Apparatus (1) for a track intended to be traversed in a longitudinal direction (L) by a railway vehicle having at least one wheel (5), the apparatus (1) comprising: a first rail (20) and a second rail (25) extending longitudinally one in the extension of the other, and being separated by a space (30), each of the first and second rails (25) comprising a proximal portion (61, 75) and a distal portion (63, 77) with respect to said gap (30), the proximal portions (61, 75) and the distal portions (63, 77) respectively defining rolling surfaces (69); , 73, 81, 82) for said wheel (5) located substantially in the same rolling plane (P) defined by the longitudinal direction (L) and a transverse direction (T) substantially perpendicular to the longitudinal direction (L), the tread surface (69, 81) of the proximal portion (61, 75) having transversely, for each of the first rail (20) and the second rail (25), a width (L1) smaller than a width (L2) of the tread surface (73, 82) of the distal portion (63, 77), and a central device (35) extending longitudinally from the proximal portion (61) of the first rail (20) to the proximal portion (75) of the second rail (25), the central device (35) forming, in the running surface (P), a central running surface (91) continuous from a first point (A) of the proximal portion (61) of the first rail (20) to a second point (B) of the proximal portion (75) of the second rail (25) projecting in the longitudinal direction (L), characterized in that it further comprises a first distal (40) and a second distal (45) each extending longitudinally from the distal portion (63, 77) to the proximal portion (61, 75) respectively of the first rail (20) and the second rail (25), the first distal device (40) and the second distal device (45) respectively forming two additional running surfaces (97, 105) in the running surface (P) the additional running surfaces (97, 105) being continuous respectively from a third point (C) of the distal portion (63) of the first rail (20) to the first point (A) and from the second point (B). ) at a fourth point (D) of the distal portion (77) of the second rail (25) projecting in the longitudinal direction (L). Appareil (1) selon la revendication 1, caractérisé en ce que l'un ou plusieurs du premier dispositif distal (40), du deuxième dispositif distal (45), et du dispositif central (35) est ou sont constitué(s) d'une seule pièce métallique.Apparatus (1) according to claim 1, characterized in that one or more of the first distal device (40), the second distal device (45), and the central device (35) are or consist of a single piece of metal. Appareil (1) selon la revendication 1 ou 2, caractérisé en ce que l'un ou plusieurs du premier dispositif distal (40), du deuxième dispositif distal (45), et du dispositif central (35) est ou sont constitué(s) d'une portion de rail orientée longitudinalement.Apparatus (1) according to claim 1 or 2, characterized in that one or more of the first distal device (40), the second distal device (45), and the central device (35) is or consist of a longitudinally oriented rail portion. Appareil (1) selon l'une quelconque des revendications 1 à 3, caractérisé en ce qu'au moins deux du premier dispositif distal (40), du deuxième dispositif distal (45), et du dispositif central (35) sont venus de matière.Apparatus (1) according to one of claims 1 to 3, characterized in that at least two of the first distal device (40), the second distal device (45) and the central device (35) are integral . Appareil (1) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le dispositif central (35) est situé transversalement sensiblement contre les parties proximales (61, 75) du premier rail (20) et du deuxième rail (25).Apparatus (1) according to any one of claims 1 to 4, characterized in that the central device (35) is located transversely substantially against the proximal portions (61, 75) of the first rail (20) and the second rail (25). ). Appareil (1) selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la surface de roulement centrale (91) présente transversalement une largeur (L3) sensiblement constante selon la direction longitudinale (L).Apparatus (1) according to any one of claims 1 to 5, characterized in that the central bearing surface (91) has a transverse width (L3) substantially constant in the longitudinal direction (L). Appareil (1) selon la revendication 6, caractérisé en ce que la largeur (L3) de la surface de roulement centrale (91) est supérieure ou égale à la largeur (L2) de la surface de roulement (73) de la portion distale (63) du premier rail (20), de préférence sensiblement égale à la largeur (L2) de la surface de roulement (73) de la portion distale (63) du premier rail (20).Apparatus (1) according to claim 6, characterized in that the width (L3) of the central running surface (91) is greater than or equal to the width (L2) of the running surface (73) of the distal portion ( 63) of the first rail (20), preferably substantially equal to the width (L2) of the running surface (73) of the distal portion (63) of the first rail (20). Appareil (1) selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le premier dispositif distal (40) et/ou le deuxième dispositif distal (45) sont situés dans le prolongement longitudinal du dispositif central (35), les surfaces de roulement supplémentaires (97, 105) de l'un et/ou l'autre du premier dispositif distal (40) et du deuxième dispositif distal (45) ayant de préférence un bord (109) destiné à être transversalement externe par rapport à la voie ferrée, ledit bord étant situé dans le prolongement longitudinal d'un bord du dispositif central (35) destiné à être transversalement externe par rapport à la voie ferrée.Apparatus (1) according to any one of claims 1 to 7, characterized in that the first distal device (40) and / or the second distal device (45) are located in the longitudinal extension of the central device (35), the additional tread surfaces (97, 105) of one and / or the other of the first distal device (40) and the second distal device (45) preferably having an edge (109) to be transversely external to the the railway, said edge being located in the longitudinal extension of an edge of the central device (35) intended to be transversely external to the railway. Appareil (1) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le premier dispositif distal (40) et/ou le deuxième dispositif distal (45) comportent respectivement une surface supérieure formant une rampe d'accès (99, 107) à leurs surfaces de roulement (97, 105) pour ladite roue (5).Apparatus (1) according to any one of claims 1 to 8, characterized in that the first distal device (40) and / or the second distal device (45) respectively comprise an upper surface forming an access ramp (99, 107) to their tread surfaces (97, 105) for said wheel (5). Appareil (1) selon l'une quelconque des revendications 1 à 9, caractérisé en ce que les surfaces de roulement supplémentaires (97, 105) du premier dispositif distal (40) et/ou du deuxième dispositif distal (45) présentent transversalement une largeur (L4) sensiblement constante selon la direction longitudinale (L) dans les parties principales (93, 101).Apparatus (1) according to any one of claims 1 to 9, characterized in that the additional running surfaces (97, 105) of the first distal device (40) and / or the second distal device (45) have a transverse width (L4) substantially constant in the longitudinal direction (L) in the main portions (93, 101). Appareil (1) selon la revendication 10, caractérisé en ce que : - la largeur (L4) de la surface de roulement supplémentaire (97) du premier dispositif distal (40) est supérieure ou égale à la largeur (L1) de la surface de roulement (69) de la portion proximale (61) du premier rail (20), de préférence sensiblement égale à la largeur (L1) de la surface de roulement (69) de la portion proximale (61) du premier rail (20), et/ou - la largeur (L4) de la surface de roulement supplémentaire (105) du deuxième dispositif distal (45) est supérieure ou égale à la largeur (L1) de la surface de roulement (81) de la portion proximale (75) du deuxième rail (25), de préférence sensiblement égale à la largeur (L1) de la surface de roulement (81) de la portion proximale (75) du deuxième rail (25). Apparatus (1) according to claim 10, characterized in that : the width (L4) of the additional running surface (97) of the first distal device (40) is greater than or equal to the width (L1) of the running surface; (69) the proximal portion (61) of the first rail (20), preferably substantially equal to the width (L1) of the tread surface (69) of the proximal portion (61) of the first rail (20), and /or the width (L4) of the additional running surface (105) of the second distal device (45) is greater than or equal to the width (L1) of the running surface (81) of the proximal portion (75) of the second rail (25), preferably substantially equal to the width (L1) of the running surface (81) of the proximal portion (75) of the second rail (25). Appareil (1) selon l'une quelconque des revendications 1 à 11, caractérisé en ce que le véhicule ferroviaire est un tramway, le premier rail (20) et le deuxième rail (25) définissant une gorge (67) destinée à coopérer avec la roue (5).Apparatus (1) according to any one of claims 1 to 11, characterized in that the railway vehicle is a tram, the first rail (20) and the second rail (25) defining a groove (67) intended to cooperate with the wheel (5). Appareil (1) selon l'une quelconque des revendications 1 à 12, caractérisé en ce que l'appareil (1) est un appareil de dilatation, l'espace (30) étant destiné à permettre un mouvement relatif du premier rail (20) par rapport au deuxième rail (25), notamment une dilatation longitudinale d'au moins l'un du premier rail (20) et du deuxième rail (25).Apparatus (1) according to any one of claims 1 to 12, characterized in that the apparatus (1) is an expansion apparatus, the space (30) being adapted to allow relative movement of the first rail (20) relative to the second rail (25), in particular a longitudinal expansion of at least one of the first rail (20) and the second rail (25). Procédé comprenant les étapes suivantes : - parcours d'une voie ferrée selon une direction longitudinale (L) par un véhicule ferroviaire comportant au moins une roue (5) ; - fourniture d'un premier rail (20) et d'un deuxième rail (25) s'étendant longitudinalement l'un dans le prolongement de l'autre, et étant séparés par un espace (30), chacun du premier rail (20) et du deuxième rail (25) comprenant une portion proximale (61, 75) et une portion distale (63, 77) par rapport audit espace (30), les portions proximales (61, 75) et les portions distales (63, 77) définissant respectivement des surfaces de roulement (69, 73, 81, 82) pour ladite roue (5) sensiblement dans un plan de roulement (P) défini par la direction longitudinale (L) et une direction transversale (T) sensiblement perpendiculaire à la direction longitudinale (L), la surface de roulement (69, 81) de la portion proximale (61, 75) présentant transversalement, pour chacun du premier rail (20) et du deuxième rail (25), une largeur (L1) inférieure à une largeur (L2) de la surface de roulement (73, 82) de la portion distale (63, 77) ; - fourniture d'un dispositif central (35) s'étendant longitudinalement depuis la portion proximale (61) du premier rail (20) jusqu'à la portion proximale (75) du deuxième rail (25), le dispositif central (35) formant, dans le plan de roulement (P), une surface de roulement centrale (91) continue d'un premier point (A) de la portion proximale (61) du premier rail (20) jusqu'à un deuxième point de la portion proximale (75) du deuxième rail (25) en projection sur la direction longitudinale (L) ; et - fourniture d'un premier dispositif distal (40) et d'un deuxième dispositif distal (45), chacun s'étendant longitudinalement depuis la portion distale (63, 77) jusqu'à la portion proximale (61, 75) respectivement du premier rail (20) et du deuxième rail (25), le premier dispositif distal (40) et le deuxième dispositif distal (45) formant respectivement deux surfaces de roulement supplémentaires (97, 105) dans le plan de roulement (P), les surfaces de roulement supplémentaires (97, 105) étant continues respectivement d'un troisième point (C) de la portion distale (63) du premier rail (20) jusqu'au premier point (A), et du deuxième point (B) à un quatrième point (D) de la portion distale (77) du deuxième rail (25) en projection sur la direction longitudinale (L). Process comprising the following steps: - course of a railway in a longitudinal direction (L) by a railway vehicle comprising at least one wheel (5); - providing a first rail (20) and a second rail (25) extending longitudinally one in the extension of the other, and being separated by a space (30), each of the first rail (20) ) and the second rail (25) comprising a proximal portion (61, 75) and a distal portion (63, 77) with respect to said gap (30), the proximal portions (61, 75) and the distal portions (63, 77). ) respectively defining rolling surfaces (69, 73, 81, 82) for said wheel (5) substantially in a rolling plane (P) defined by the longitudinal direction (L) and a transverse direction (T) substantially perpendicular to the longitudinal direction (L), the running surface (69, 81) of the proximal portion (61, 75) having, transversely, for each of the first rail (20) and the second rail (25), a width (L1) less than a width (L2) of the tread surface (73, 82) of the distal portion (63, 77); providing a central device (35) extending longitudinally from the proximal portion (61) of the first rail (20) to the proximal portion (75) of the second rail (25), the central device (35) forming in the running surface (P), a continuous running surface (91) of a first point (A) of the proximal portion (61) of the first rail (20) to a second point of the proximal portion (75) of the second rail (25) projecting in the longitudinal direction (L); and providing a first distal device (40) and a second distal device (45), each extending longitudinally from the distal portion (63, 77) to the proximal portion (61, 75) respectively of the first rail (20) and the second rail (25), the first distal device (40) and the second distal device (45) respectively forming two additional running surfaces (97, 105) in the running surface (P), the surfaces of additional bearing (97, 105) being continuous respectively from a third point (C) of the distal portion (63) of the first rail (20) to the first point (A), and from the second point (B) to a fourth point (D) of the distal portion (77) of the second rail (25) projecting in the longitudinal direction (L).
EP15183935.4A 2014-09-19 2015-09-04 Device for railway track Active EP2998438B1 (en)

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MA39630A MA39630B1 (en) 2014-09-19 2015-09-04 Railway track device

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FR1458883A FR3026114B1 (en) 2014-09-19 2014-09-19 APPARATUS FOR RAILWAY

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AU (1) AU2015227501B2 (en)
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE270492C (en) *
US276900A (en) * 1883-05-01 Joseph s
GB191016396A (en) * 1909-07-09 1910-09-29 Powell Orgain Adams Improvements in or relating to Railway Rail Joints.
FR1077771A (en) * 1953-05-22 1954-11-10 Haine Saint Pierre Lesquin Expansion joint for rails

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191516396A (en) * 1915-11-20 1916-10-26 Joseph Higginson Improvements in the Liquid Fuel Supply Arrangements of Internal Combustion Engines.
FR2698110B1 (en) * 1992-11-16 1995-02-03 Cogifer Improved needle rail for switchgear.
JP5713725B2 (en) * 2011-02-23 2015-05-07 三菱重工業株式会社 Bifurcation device and track system traffic system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE270492C (en) *
US276900A (en) * 1883-05-01 Joseph s
GB191016396A (en) * 1909-07-09 1910-09-29 Powell Orgain Adams Improvements in or relating to Railway Rail Joints.
FR1077771A (en) * 1953-05-22 1954-11-10 Haine Saint Pierre Lesquin Expansion joint for rails

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FR3026114A1 (en) 2016-03-25
IL241481A0 (en) 2015-11-30
MA39630B1 (en) 2019-12-31
KR102426227B1 (en) 2022-07-29
AU2015227501A1 (en) 2016-04-07
AU2015227501B2 (en) 2019-10-10
TN2015000399A1 (en) 2017-01-03
MA39630A (en) 2019-05-15
EP2998438B1 (en) 2019-05-15
FR3026114B1 (en) 2016-12-09
KR20160034203A (en) 2016-03-29

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