EP2337897B1 - Device for railway maintenance - Google Patents

Device for railway maintenance Download PDF

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Publication number
EP2337897B1
EP2337897B1 EP09741369.4A EP09741369A EP2337897B1 EP 2337897 B1 EP2337897 B1 EP 2337897B1 EP 09741369 A EP09741369 A EP 09741369A EP 2337897 B1 EP2337897 B1 EP 2337897B1
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EP
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Prior art keywords
rail
along
axis
wheel
rails
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EP09741369.4A
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German (de)
French (fr)
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EP2337897A1 (en
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Jean Sauron
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CTF FRANCE
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CTF FRANCE
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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
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/18—Reconditioning or repairing worn or damaged parts on the spot, e.g. applying inlays, building-up rails by welding; Heating or cooling of parts on the spot, e.g. for reducing joint gaps, for hardening rails
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing

Definitions

  • the present invention relates to the maintenance and repair of rail wear, for example rails railroad networks.
  • the present invention relates to a device for the repair and maintenance of rails and switches.
  • the patent EP 1 145 793 describes an arc welding machine for rail maintenance.
  • This automaton comprises a frame, a welding apparatus including a torch for welding a rail area, and a control unit.
  • This automaton is equipped with two holding means on the rail to be repaired.
  • Each of these means may consist of a horizontal bar.
  • One end of said bar terminates in a clamp hooking the rail.
  • One of the jaws of the clamp passes under the head of the rail, that is to say under the part of the rail that comes into contact with railway vehicles.
  • the other end of the horizontal bar is attached to the frame. Said frame is therefore cantilevered relative to the rail, its weight allowing the clamp to remain firmly hooked under the rail head.
  • the torch located on a side face of the frame, is vertical to the rail to repair.
  • the torch to be welded is provided with displacement means along two axes located in a horizontal plane.
  • This mobility in two dimensions makes it possible to record the coordinates of at least three points, defining a rail surface to repair, then to let the automaton carry out this repair.
  • clamp-shaped holding means has several disadvantages, particularly related to clamp-shaped holding means.
  • two consecutive rails can be secured by at least one alignment splice.
  • Such a splint notably takes place along the part of the less thick rail, under the mushroom. The presence of such a splint prevents the use of clamp-shaped holding means, because the location of one end of the clamp is occupied by the splint.
  • Another disadvantage is related to the maintenance of switches or switches. Since the welding torch is located on a lateral face of the automaton, it is advisable to position the clamps on both sides of the zone to be repaired. However, such positioning is sometimes made impossible by the specific shapes of the switchgear parts, including crossover hearts.
  • rail maintenance devices provided with moving means on said rails such as wheels.
  • the documents CH624351 and RU 2253712 describe in particular devices moving by means of wheels bearing on two parallel rails, said wheels being divided into two groups arranged on either side of a vertical plane passing through the center of gravity of said devices.
  • center of gravity is meant the point of intersection of all planes that divide the device into two parts of equal weight.
  • the present invention overcomes these disadvantages by changing the arrangement and the holding means of the apparatus.
  • the invention therefore relates to a device for the maintenance or repair of rails and track apparatus, said device comprising in particular a frame and means of displacement on a rail, the displacement means comprising two wheels aligned along an axis of movement of the device. along a rail, said device being characterized in that the frame is disposed on the displacement means so that, when the wheels of said device are positioned on a rail, the center of gravity of said device is at the vertical of said rail.
  • a device according to the invention is not in cantilever with respect to the rail to be repaired.
  • the center of gravity of the device is at the vertical of said rail to fix. This makes it easy to move said device by rolling it along the rail, without the risk of tipping.
  • each wheel is provided with two cheeks of substantially annular shape. More preferably, the position of at least one of the two cheeks is adjustable along an axis of the wheel.
  • the device is therefore securely held at a specific location of the rail.
  • This holding system is particularly suitable for precision work such as arc welding.
  • an inner surface of at least one cheek has substantially the shape of a truncated cone of revolution, said surface being intended to come into contact with a rail.
  • This frustoconical shape allows the cheek to marry the profile of a classic rail mushroom.
  • the truncated cone surface is inclined at an angle between 1 ° and 15 relative to the base of said cone. Even more preferably, the angle is between 2 ° and 5 °.
  • the figure 1 represents a device according to one embodiment of the invention.
  • it is an arc welding apparatus.
  • the invention also relates to other rail maintenance devices, for example grinding devices.
  • the device 1 comprises a frame 2, which rests on a frame 3 which it is secured.
  • the chassis 3 is provided with two wheels (4,5).
  • the wheels (4, 5) are aligned along an axis 6 of displacement of the device 1 along a rail 7 to be repaired.
  • the frame 2 is disposed on the frame 3 so that, when the wheels (4, 5) are positioned on a rail 7, the center of gravity of the device 1 is vertical to said rail 7.
  • the device 1 is not driven by its weight to tilt on either side of the rail 7. This is advantageous for operators likely to move the device 1 by rolling it along the rails to fix. It is also conceivable to motorize the frame 3 for its displacement, using the wheels (4,5), on the rail 7.
  • the wheels (4, 5) have a long wheelbase, that is to say a distance between the axles of said wheels (4, 5) along the axis 6 is equal to at least two thirds of a length of the frame 2 along said axis 6. This distance between the wheels promotes the stability of the device 1, limiting the risk of tilting forwards or back along the axis 6 of displacement.
  • the frame 2 is provided with a welding apparatus comprising a torch 9.
  • the torch 9 is equipped with displacement means in translation along two axes (X, Y) included in a horizontal plane.
  • a torch equipped with such means is described in the patent EP 1 145 793 .
  • the frame 2 is substantially vertical to the rail 7 to be repaired, unlike the apparatus described in FIG. EP Patent 1,145,793 .
  • the invention therefore makes it possible to place the torch 9 at one end 10 of the device 1, along the axis 6 of displacement. It can be indifferently a front end or back.
  • the torch is not arranged on a side face of the device.
  • This arrangement of the torch 9, for example at the front of the frame 2, allows the maintenance of parts having a specific shape, such as the hearts of crossing 11 of the switches. Indeed, an apparatus carrying a welding torch on a lateral face, as described in the patent EP 1 145 793 , is sometimes unsuitable for this type of room.
  • the holding system consisting of two clamps aligned on either side of the torch is more suitable for a straight rail than for an element such as a crossover core 11.
  • the figure 2 is a sectional view of a wheel 4 of the device 1, in position on a rail 7.
  • the wheel 4 is provided with two cheeks (12, 13) which are placed on either side of the head 14 of the rail 7.
  • the two cheeks (12, 13) are substantially annular in shape.
  • One of the functions of the cheeks (12, 13) is to guide the device 1 during its movement on the rail 7, so to avoid derailment.
  • one of the cheeks 12 is fixed, while the other cheek 13 is movable along an axis 15 of the wheel 4.
  • This system makes it possible to lock the device 1 in a precise position on the rail 7, taking in vice between the cheeks (12, 13) the mushroom 14 of said rail 7.
  • the cheek 13 can be loosened in order to make its mobility to the wheel 4.
  • This system which makes it possible to very precisely adjust the position of the device 1, is extremely advantageous for the minute operations of maintenance of the rails, such as the electric arc welding.
  • the adaptability of the space between the cheeks 12 and 13 makes it possible to use the device 1 on rails of different widths.
  • the adjustment system involves a button 16 clamping, a rod 17 partially threaded and a spring 18 clamping.
  • the wheel 4 is movable around the rod 17 by means of ball bearings 19.
  • the cheeks (12, 13) engage the rail 7 by an inner surface (20, 21).
  • One internal surface is considered to be one cheek facing the other cheek.
  • an inner surface 20 or 21 of at least one cheek 12 or 13 has substantially the shape of a truncated cone of revolution. More preferably, internal surfaces (20, 21) of the two cheeks (12, 13) have substantially the shape of a truncated cone of revolution.
  • This frustoconical shape makes it possible to marry more effectively the lateral edges of the mushroom 14 of a rail 7.
  • said edges are slightly inclined with respect to the vertical. More specifically, the edges of the mushroom 14 move away from each other on the way down.
  • a surface 20 or 21 forms an angle ⁇ with a plane perpendicular to the axis 15. This angle is such that the surfaces (20, 21) deviate from each other as one moves away from axis 15.
  • the angle ⁇ is between 1 ° and 15 °, more preferably between 2 ° and 5 °, more preferably between 3 ° and 4 °.
  • the frustoconical surfaces (20, 21) allow the cheeks (12, 13) to conform to the edges of a conventional rail head 14 more effectively than flat surfaces. The degree of tightening of the cheeks (12, 13) around the rail 7 is thus improved, which promotes the accuracy of the maintenance work performed by the device 1.
  • the characteristics of the frustoconical shapes of the surfaces 20 and 21 are chosen as a function of the type of rail to be repaired.
  • these surfaces are convex, that is to say that the surfaces (20, 21) deviate from each other as one moves away from the axis 15.
  • the surfaces (20, 21) According to the shape of the mushroom 14 of the rail to be repaired, it is also possible to give the surfaces (20, 21) a concave shape, the surfaces (20, 21) approaching each other as one moves away from the axis 15. It is also possible to choose a different angle ⁇ for the cheek 12 and the cheek 13, while remaining within the scope of the 'invention.

Description

La présente invention se rapporte à la maintenance et à la réparation des usures des rails, par exemple des rails de réseaux de chemins de fer.The present invention relates to the maintenance and repair of rail wear, for example rails railroad networks.

Plus précisément, la présente invention se rapporte à un dispositif pour la réparation et l'entretien de rails et appareils de voie.More specifically, the present invention relates to a device for the repair and maintenance of rails and switches.

La circulation de véhicules tels que les trains induit une usure des rails qui les supportent. Cette usure se manifeste par exemple par des rayures ou des creux dans la surface des rails. Afin de conserver les voies ferrées en état de fonctionnement, il convient de combler ces rayures ou ces creux.The circulation of vehicles such as trains induces a wear of the rails that support them. This wear is manifested for example by scratches or hollows in the surface of the rails. In order to keep the tracks in working condition, these scratches or hollows should be filled.

Afin d'assurer l'entretien des rails, il est notamment connu d'utiliser des automates spécialement conçus pour réparer ces creux, en les comblant à l'aide d'un matériau de soudure.In order to ensure the maintenance of the rails, it is in particular known to use specially designed automats for repairing these depressions by filling them with a welding material.

Par exemple, le brevet EP 1 145 793 décrit un automate de soudage à l'arc électrique pour la maintenance des rails. Cet automate comporte un bâti, un appareillage de soudage incluant une torche pour souder une zone de rail, ainsi qu'une unité de commande.For example, the patent EP 1 145 793 describes an arc welding machine for rail maintenance. This automaton comprises a frame, a welding apparatus including a torch for welding a rail area, and a control unit.

Cet automate est équipé de deux moyens de maintien sur le rail à réparer. Chacun de ces moyens peut consister en une barre horizontale. Une extrémité de ladite barre se termine en une pince crochetant le rail. L'une des mâchoires de la pince passe sous le champignon du rail, c'est-à-dire sous la partie du rail qui entre en contact avec les véhicules ferroviaires. L'autre extrémité de la barre horizontale est fixée au bâti. Ledit bâti se trouve donc en porte à faux par rapport au rail, son poids permettant à la pince de rester solidement crochetée sous le champignon du rail. La torche, située sur une face latérale du bâti, se trouve à la verticale du rail à réparer.This automaton is equipped with two holding means on the rail to be repaired. Each of these means may consist of a horizontal bar. One end of said bar terminates in a clamp hooking the rail. One of the jaws of the clamp passes under the head of the rail, that is to say under the part of the rail that comes into contact with railway vehicles. The other end of the horizontal bar is attached to the frame. Said frame is therefore cantilevered relative to the rail, its weight allowing the clamp to remain firmly hooked under the rail head. The torch, located on a side face of the frame, is vertical to the rail to repair.

Selon le brevet EP 1 145 793 , la torche à souder est munie de moyens de déplacement selon deux axes situés dans un plan horizontal. Cette mobilité dans deux dimensions permet d'enregistrer les coordonnées d'au moins trois points, définissant une surface de rail à réparer, puis de laisser l'automate procéder à cette réparation.According to the patent EP 1 145 793 , the torch to be welded is provided with displacement means along two axes located in a horizontal plane. This mobility in two dimensions makes it possible to record the coordinates of at least three points, defining a rail surface to repair, then to let the automaton carry out this repair.

Toutefois, un tel dispositif présente plusieurs inconvénients, notamment liés aux moyens de maintien en forme de pince. Par exemple, deux rails consécutifs peuvent être rendus solidaires par au moins une éclisse d'alignement. Une telle éclisse prend notamment place le long de la partie la moins épaisse du rail, sous le champignon. La présence d'une telle éclisse empêche l'utilisation des moyens de maintien en forme de pince, car l'emplacement d'une extrémité de la pince est occupé par l'éclisse.However, such a device has several disadvantages, particularly related to clamp-shaped holding means. For example, two consecutive rails can be secured by at least one alignment splice. Such a splint notably takes place along the part of the less thick rail, under the mushroom. The presence of such a splint prevents the use of clamp-shaped holding means, because the location of one end of the clamp is occupied by the splint.

Un autre inconvénient est lié à l'entretien des appareils de voie ou aiguillages. La torche à souder étant située sur une face latérale de l'automate, il convient de positionner les pinces de part et d'autre de la zone à réparer. Toutefois, un tel positionnement est parfois rendu impossible par les formes spécifiques des pièces d'appareil de voie, notamment les coeurs de croisement.Another disadvantage is related to the maintenance of switches or switches. Since the welding torch is located on a lateral face of the automaton, it is advisable to position the clamps on both sides of the zone to be repaired. However, such positioning is sometimes made impossible by the specific shapes of the switchgear parts, including crossover hearts.

Sont également connus des dispositifs d'entretien de rails, munis de moyens de déplacement sur lesdits rails tels que des roulettes. Les documents CH624351 et RU 2253712 décrivent notamment des dispositifs se déplaçant au moyen de roulettes prenant appui sur deux rails parallèles, lesdites roulettes étant divisées en deux groupes disposés de part et d'autre d'un plan vertical passant par le centre de gravité desdits dispositifs.Also known are rail maintenance devices provided with moving means on said rails such as wheels. The documents CH624351 and RU 2253712 describe in particular devices moving by means of wheels bearing on two parallel rails, said wheels being divided into two groups arranged on either side of a vertical plane passing through the center of gravity of said devices.

Par centre de gravité, on entend le point d'intersection de tous les plans qui divisent le dispositif en deux parties de poids égal.By center of gravity is meant the point of intersection of all planes that divide the device into two parts of equal weight.

Les dispositifs décrits dans les documents CH624351 et RU 2253712 nécessitent la présence de deux rails parallèles pour se déplacer. Il est donc difficile de les utiliser pour l'entretien des aiguillages ou des coeurs de croisement, c'est-à-dire dans des zones où les rails sont disposés de manière non parallèle.The devices described in the documents CH624351 and RU 2253712 require the presence of two parallel rails to move. It is therefore difficult to use them for the maintenance of switches or crossover hearts, that is to say in areas where the rails are arranged non-parallel.

La présente invention permet de remédier à ces inconvénients, en modifiant la disposition et les moyens de maintien de l'appareil. L'invention concerne donc un dispositif pour la maintenance ou la réparation de rails et appareils de voie, ledit dispositif comprenant notamment un bâti et des moyens de déplacement sur un rail, les moyens de déplacement comportant deux roues alignées selon un axe de déplacement du dispositif le long d'un rail, ledit dispositif étant caractérisé en ce que le bâti est disposé sur les moyens de déplacement de manière à ce que, lorsque les roues dudit dispositif sont positionnées sur un rail, le centre de gravité dudit dispositif se trouve à la verticale dudit rail.The present invention overcomes these disadvantages by changing the arrangement and the holding means of the apparatus. The invention therefore relates to a device for the maintenance or repair of rails and track apparatus, said device comprising in particular a frame and means of displacement on a rail, the displacement means comprising two wheels aligned along an axis of movement of the device. along a rail, said device being characterized in that the frame is disposed on the displacement means so that, when the wheels of said device are positioned on a rail, the center of gravity of said device is at the vertical of said rail.

Contrairement à l'appareil décrit dans le brevet EP 1 145 793 , un dispositif selon l'invention ne se trouve pas en porte à faux par rapport au rail à réparer. Le centre de gravité du dispositif se trouve à la verticale dudit rail à réparer. Cela permet de déplacer facilement ledit dispositif en le faisant rouler le long du rail, sans risquer de le faire basculer.Unlike the apparatus described in the patent EP 1 145 793 , a device according to the invention is not in cantilever with respect to the rail to be repaired. The center of gravity of the device is at the vertical of said rail to fix. This makes it easy to move said device by rolling it along the rail, without the risk of tipping.

Selon une forme préférentielle de l'invention, chaque roue est munie de deux joues de forme sensiblement annulaire. Plus préférentiellement, la position de l'une au moins des deux joues est réglable selon un axe de la roue. On peut donc déplacer le dispositif le long d'un rail en le faisant rouler ; puis, après avoir choisi la position appropriée, on peut déplacer la joue mobile en direction de la joue fixe afin de serrer le champignon du rail entre les deux joues. Le dispositif est donc maintenu solidement à un endroit spécifique du rail.. Ce système de maintien est particulièrement adapté à des travaux de précision tels que le soudage à l'arc électrique.According to a preferred form of the invention, each wheel is provided with two cheeks of substantially annular shape. More preferably, the position of at least one of the two cheeks is adjustable along an axis of the wheel. We can move the device along a rail by rolling it; then, after choosing the appropriate position, we can move the movable cheek towards the fixed cheek to tighten the mushroom of the rail between the two cheeks. The device is therefore securely held at a specific location of the rail. This holding system is particularly suitable for precision work such as arc welding.

Selon une forme préférentielle de l'invention, une surface interne d'au moins une joue a sensiblement la forme d'un tronc de cône de révolution, ladite surface étant destinée à entrer en contact avec un rail. Cette forme tronconique permet à la joue d'épouser le profil d'un champignon de rail classique. Plus préférentiellement, la surface en tronc de cône est inclinée d'un angle compris entre 1 ° et 15 par rapport à la base dudit cône. Encore plus préférentiellement, l'angle est compris entre 2°et 5°.According to a preferred form of the invention, an inner surface of at least one cheek has substantially the shape of a truncated cone of revolution, said surface being intended to come into contact with a rail. This frustoconical shape allows the cheek to marry the profile of a classic rail mushroom. More preferably, the truncated cone surface is inclined at an angle between 1 ° and 15 relative to the base of said cone. Even more preferably, the angle is between 2 ° and 5 °.

L'invention sera mieux comprise à la lecture de la description qui suit et à l'examen des figures qui l'accompagnent. Celles-ci sont données à titre indicatif et nullement limitatif de l'invention. Les figures montrent :

  • Figure 1 : une vue en perspective d'un dispositif selon un mode de réalisation de l'invention ;
  • Figure 2: une vue en coupe d'une roue d'un dispositif tel que représenté à la figure 1.
The invention will be better understood on reading the description which follows and on examining the figures which accompany it. These are given as an indication and in no way limitative of the invention. The figures show:
  • Figure 1 : a perspective view of a device according to an embodiment of the invention;
  • Figure 2 : a sectional view of a wheel of a device as shown in FIG. figure 1 .

La figure 1 représente un dispositif selon un mode de réalisation de l'invention. Dans cet exemple, il s'agit d'un appareil de soudage à l'arc électrique. Toutefois, l'invention concerne également d'autres dispositifs d'entretien des rails, par exemple des appareils de meulage.The figure 1 represents a device according to one embodiment of the invention. In this example, it is an arc welding apparatus. However, the invention also relates to other rail maintenance devices, for example grinding devices.

Le dispositif 1 comporte un bâti 2, lequel repose sur un châssis 3 dont il est solidaire. Le châssis 3 est muni de deux roues (4,5). Les roues (4,5) sont alignées le long d'un axe 6 de déplacement du dispositif 1 le long d'un rail 7 à réparer.The device 1 comprises a frame 2, which rests on a frame 3 which it is secured. The chassis 3 is provided with two wheels (4,5). The wheels (4, 5) are aligned along an axis 6 of displacement of the device 1 along a rail 7 to be repaired.

L'un des avantages des roues (4,5), par rapport au système de pinces décrit dans le brevet EP 1 145 793 , est que le positionnement du dispositif 1 n'est pas gêné par la présence d'éclisses 8 à la jonction de deux rails.One of the advantages of the wheels (4,5), compared to the clamp system described in the patent EP 1 145 793 is that the positioning of the device 1 is not hindered by the presence of fishplates 8 at the junction of two rails.

Le bâti 2 est disposé sur le châssis 3 de manière à ce que, lorsque les roues (4,5) sont positionnées sur un rail 7, le centre 22 de gravité du dispositif 1 se trouve à la verticale dudit rail 7.The frame 2 is disposed on the frame 3 so that, when the wheels (4, 5) are positioned on a rail 7, the center of gravity of the device 1 is vertical to said rail 7.

Plus précisément, on considère un plan vertical, parallèle à l'axe 6 et passant par le centre 22 de gravité du dispositif 1. Ce plan vertical traverse une partie 23 de chaque roue (4, 5), ladite partie 23 étant destinée à reposer sur le rail 7.More specifically, consider a vertical plane, parallel to the axis 6 and passing through the center 22 of gravity of the device 1. This vertical plane passes through a portion 23 of each wheel (4, 5), said portion 23 being intended to rest on the rail 7.

De cette manière, le dispositif 1 n'est pas entraîné par son poids à basculer d'un côté ou de l'autre du rail 7. Cela est avantageux pour des opérateurs susceptibles de déplacer le dispositif 1 en le faisant rouler le long des rails à réparer. Il est également envisageable de motoriser le bâti 3 pour son déplacement, à l'aide des roues (4,5), sur le rail 7.In this way, the device 1 is not driven by its weight to tilt on either side of the rail 7. This is advantageous for operators likely to move the device 1 by rolling it along the rails to fix. It is also conceivable to motorize the frame 3 for its displacement, using the wheels (4,5), on the rail 7.

De manière avantageuse, les roues (4,5) sont à fort empattement, c'est-à-dire qu'une distance entre les essieux desdites roues (4,5) selon l'axe 6 est égale à au moins deux tiers d'une longueur du bâti 2 selon ledit axe 6. Cette distance entre les roues favorise la stabilité du dispositif 1, en limitant les risques de basculement vers l'avant ou vers l'arrière selon l'axe 6 de déplacement.Advantageously, the wheels (4, 5) have a long wheelbase, that is to say a distance between the axles of said wheels (4, 5) along the axis 6 is equal to at least two thirds of a length of the frame 2 along said axis 6. This distance between the wheels promotes the stability of the device 1, limiting the risk of tilting forwards or back along the axis 6 of displacement.

Selon le mode de réalisation de l'invention représenté à la figure 1, le bâti 2 est muni d'un appareillage de soudage comprenant une torche 9. La torche 9 est équipée de moyens de déplacement en translation selon deux axes (X, Y) compris dans un plan horizontal. Une torche équipée de tels moyens est décrite dans le brevet EP 1 145 793 .According to the embodiment of the invention shown in figure 1 , the frame 2 is provided with a welding apparatus comprising a torch 9. The torch 9 is equipped with displacement means in translation along two axes (X, Y) included in a horizontal plane. A torch equipped with such means is described in the patent EP 1 145 793 .

Selon l'invention, le bâti 2 se trouve sensiblement à la verticale du rail 7 à réparer, contrairement à l'appareil décrit dans le brevet EP 1 145 793 . L'invention permet donc de placer la torche 9 à une extrémité 10 du dispositif 1, selon l'axe 6 de déplacement. Il peut s'agir indifféremment d'une extrémité avant ou arrière. Contrairement à l'appareil décrit dans le brevet EP 1 145 793 , la torche n'est donc pas disposée sur une face latérale de l'appareil.According to the invention, the frame 2 is substantially vertical to the rail 7 to be repaired, unlike the apparatus described in FIG. EP Patent 1,145,793 . The invention therefore makes it possible to place the torch 9 at one end 10 of the device 1, along the axis 6 of displacement. It can be indifferently a front end or back. Unlike the apparatus described in the patent EP 1 145 793 , the torch is not arranged on a side face of the device.

Cette disposition de la torche 9, par exemple à l'avant du bâti 2, permet l'entretien de pièces ayant une forme spécifique, telles les coeurs de croisement 11 des appareils de voie. En effet, un appareil portant une torche de soudage sur une face latérale, comme décrit dans le brevet EP 1 145 793 , est parfois inadapté à ce type de pièce. Le système de maintien composé de deux pinces alignées, de part et d'autre de la torche, est plus approprié à un rail rectiligne qu'à un élément tel qu'un coeur de croisement 11.This arrangement of the torch 9, for example at the front of the frame 2, allows the maintenance of parts having a specific shape, such as the hearts of crossing 11 of the switches. Indeed, an apparatus carrying a welding torch on a lateral face, as described in the patent EP 1 145 793 , is sometimes unsuitable for this type of room. The holding system consisting of two clamps aligned on either side of the torch is more suitable for a straight rail than for an element such as a crossover core 11.

Au contraire, selon le mode de réalisation de l'invention représenté à la figure 1, il est aisé de positionner le dispositif 1 à proximité du coeur de croisement 11. La torche 9 se trouve à l'avant du bâti 2. Ladite torche est donc à son tour disposée facilement à la verticale dudit coeur de croisement, pour entretenir ou réparer la zone concernée.On the contrary, according to the embodiment of the invention shown in figure 1 it is easy to position the device 1 near the crossing center 11. The torch 9 is at the front of the frame 2. Said torch is in turn easily disposed vertically said crossover, to maintain or repair the affected area.

La figure 2 représente une vue en coupe d'une roue 4 du dispositif 1, en position sur un rail 7. La roue 4 est munie de deux joues (12, 13) qui se placent de part et d'autre du champignon 14 du rail 7. Les deux joues (12, 13) sont de forme sensiblement annulaire. L'une des fonctions des joues (12, 13) est de guider le dispositif 1 lors de son déplacement sur le rail 7, donc d'éviter son déraillement.The figure 2 is a sectional view of a wheel 4 of the device 1, in position on a rail 7. The wheel 4 is provided with two cheeks (12, 13) which are placed on either side of the head 14 of the rail 7. The two cheeks (12, 13) are substantially annular in shape. One of the functions of the cheeks (12, 13) is to guide the device 1 during its movement on the rail 7, so to avoid derailment.

De manière préférentielle, l'une des joues 12 est fixe, tandis que l'autre joue 13 est mobile selon un axe 15 de la roue 4. Ce système permet de bloquer le dispositif 1 dans une position précise sur le rail 7, en prenant en étau entre les joues (12, 13) le champignon 14 dudit rail 7. Lorsque l'on souhaite déplacer le dispositif 1, la joue 13 peut être desserrée afin de rendre sa mobilité à la roue 4.Preferably, one of the cheeks 12 is fixed, while the other cheek 13 is movable along an axis 15 of the wheel 4. This system makes it possible to lock the device 1 in a precise position on the rail 7, taking in vice between the cheeks (12, 13) the mushroom 14 of said rail 7. When it is desired to move the device 1, the cheek 13 can be loosened in order to make its mobility to the wheel 4.

Ce système, qui permet de régler très précisément la position du dispositif 1, est extrêmement avantageux pour les opérations minutieuses d'entretien des rails, comme le soudage à l'arc électrique. De plus, l'adaptabilité de l'espace entre les joues 12 et 13 permet d'utiliser le dispositif 1 sur des rails de différentes largeurs.This system, which makes it possible to very precisely adjust the position of the device 1, is extremely advantageous for the minute operations of maintenance of the rails, such as the electric arc welding. In addition, the adaptability of the space between the cheeks 12 and 13 makes it possible to use the device 1 on rails of different widths.

On considère le plan vertical évoqué précédemment, parallèle à l'axe 6 et passant par le centre 22 de gravité du dispositif 1. Afin que ledit centre 22 de gravité soit à la verticale du rail 7 quelle que soit la position de la joue 13 mobile, il est avantageux que les joues (12, 13) soient situées de part et d'autre dudit plan vertical lorsque la joue 13 est positionnée au plus proche de la joue 12. Il est donc préférable de dimensionner et de disposer la roue 4 en fonction de la position du plan vertical évoqué ci-dessus.Considering the vertical plane mentioned above, parallel to the axis 6 and passing through the center 22 of gravity of the device 1. So that said center of gravity 22 is vertical to the rail 7 regardless of the position of the movable cheek 13 , it is advantageous that the cheeks (12, 13) are located on either side of said vertical plane when the cheek 13 is positioned closest to the cheek 12. It is therefore preferable to size and dispose the wheel 4 in depending on the position of the vertical plane mentioned above.

Différents systèmes de réglages de la position de la joue 13 mobile, connus de l'homme du métier, peuvent être adoptés. Selon le mode de réalisation de l'invention représenté à la figure 2, le système de réglage met en jeu un bouton 16 de serrage, une tige 17 partiellement filetée et un ressort 18 de serrage. La roue 4 est mobile autour de la tige 17 grâce à des roulements à bille 19.Different systems for adjusting the position of the mobile cheek 13 known to those skilled in the art can be adopted. According to the embodiment of the invention shown in figure 2 , the adjustment system involves a button 16 clamping, a rod 17 partially threaded and a spring 18 clamping. The wheel 4 is movable around the rod 17 by means of ball bearings 19.

Les joues (12, 13) entrent en contact avec le rail 7 par une surface interne (20, 21). On considère comme interne une surface d'une joue qui fait face à l'autre joue. De manière préférentielle, une surface interne 20 ou 21 d'au moins une joue 12 ou 13 a sensiblement la forme d'un tronc de cône de révolution. De manière plus préférentielle, des surfaces internes (20, 21) des deux joues (12,13) ont sensiblement la forme d'un tronc de cône de révolution.The cheeks (12, 13) engage the rail 7 by an inner surface (20, 21). One internal surface is considered to be one cheek facing the other cheek. Preferably, an inner surface 20 or 21 of at least one cheek 12 or 13 has substantially the shape of a truncated cone of revolution. More preferably, internal surfaces (20, 21) of the two cheeks (12, 13) have substantially the shape of a truncated cone of revolution.

Cette forme tronconique permet d'épouser plus efficacement les bords latéraux du champignon 14 d'un rail 7. En effet, de manière classique, lesdits bords sont légèrement inclinés par rapport à la verticale. Plus précisément, les bords du champignon 14 s'éloignent l'un de l'autre en descendant.This frustoconical shape makes it possible to marry more effectively the lateral edges of the mushroom 14 of a rail 7. In fact, conventionally, said edges are slightly inclined with respect to the vertical. More specifically, the edges of the mushroom 14 move away from each other on the way down.

De manière préférentielle, selon un plan de coupe contenant l'axe 15 de la roue 4, une surface 20 ou 21 forme un angle α avec un plan perpendiculaire à l'axe 15. Cet angle est tel que les surfaces (20, 21) s'écartent l'une de l'autre à mesure que l'on s'éloigne de l'axe 15.Preferably, according to a cutting plane containing the axis 15 of the wheel 4, a surface 20 or 21 forms an angle α with a plane perpendicular to the axis 15. This angle is such that the surfaces (20, 21) deviate from each other as one moves away from axis 15.

De manière préférentielle, l'angle α est compris entre 1 ° et 15°, plus préférentiellement entre 2° et 5°, encore plus préférentiellement entre 3° et 4°.Preferably, the angle α is between 1 ° and 15 °, more preferably between 2 ° and 5 °, more preferably between 3 ° and 4 °.

Les surfaces (20, 21) tronconiques permettent aux joues (12, 13) d'épouser les bords d'un champignon 14 de rail classique, plus efficacement que des surfaces planes. Le degré de serrage des joues (12, 13) autour du rail 7 s'en trouve donc amélioré, ce qui favorise la précision des travaux de maintenance réalisés par le dispositif 1.The frustoconical surfaces (20, 21) allow the cheeks (12, 13) to conform to the edges of a conventional rail head 14 more effectively than flat surfaces. The degree of tightening of the cheeks (12, 13) around the rail 7 is thus improved, which promotes the accuracy of the maintenance work performed by the device 1.

Les caractéristiques des formes tronconiques des surfaces 20 et 21 sont choisies en fonction du type de rail à réparer. Dans l'exemple présenté à la figure 2, ces surfaces sont convexes, c'est-à-dire que les surfaces (20, 21) s'écartent l'une de l'autre à mesure que l'on s'éloigne de l'axe 15. Selon la forme du champignon 14 du rail à réparer, on peut également donner aux surfaces (20, 21) une forme concave, les surfaces (20, 21) se rapprochant l'une de l'autre à mesure que l'on s'éloigne de l'axe 15. Il est également possible de choisir un angle α différent pour la joue 12 et pour la joue 13, tout en demeurant dans le cadre de l'invention.The characteristics of the frustoconical shapes of the surfaces 20 and 21 are chosen as a function of the type of rail to be repaired. In the example presented at figure 2 these surfaces are convex, that is to say that the surfaces (20, 21) deviate from each other as one moves away from the axis 15. According to the shape of the mushroom 14 of the rail to be repaired, it is also possible to give the surfaces (20, 21) a concave shape, the surfaces (20, 21) approaching each other as one moves away from the axis 15. It is also possible to choose a different angle α for the cheek 12 and the cheek 13, while remaining within the scope of the 'invention.

Claims (8)

  1. Device (1) for the maintenance or repair of rails and points and crossings, said device comprising in particular:
    - a frame (2);
    - means (3, 4, 5) for movement on a rail (7);
    the movement means comprising two wheels (4, 5) that are aligned along an axis (6) of movement of the device along said rail (7);
    said device being characterized in that the frame (2) is disposed on the movement means (3) such that a vertical plane, parallel to the axis (6) and passing through the centre (22) of gravity of the device (1), passes through a part (23) of each wheel (4, 5), said part (23) being intended to rest on the rail (7).
  2. Device according to Claim 1, characterized in that each wheel is provided with two rims (12, 13) having an approximately annular shape.
  3. Device according to Claim 2, characterized in that the position of at least one of the two rims (13) is adjustable along an axis (15) of the wheel.
  4. Device according to Claim 2 or Claim 3, characterized in that an internal surface (20) of at least one rim is approximately in the form of an axisymmetric cone frustum, said surface (20) being intended to come into contact with the rail (7).
  5. Device according to Claim 4, characterized in that the surface (20) in the form of a cone frustum is inclined at an angle of between 1° and 15° with respect to the base of said cone.
  6. Device according to one of the preceding claims, characterized in that it is provided with electric arc welding means (9).
  7. Device according to Claim 6, characterized in that the welding means (9) are disposed at a front or rear end (10) of the device, along an axis (6) of movement along said rail (7).
  8. Use of a device according to one of the preceding claims for repairing and/or maintaining rails or points and crossings.
EP09741369.4A 2008-09-09 2009-09-04 Device for railway maintenance Active EP2337897B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0856050A FR2935715B1 (en) 2008-09-09 2008-09-09 DEVICE FOR MAINTENANCE OF RAILS
PCT/FR2009/051672 WO2010029248A1 (en) 2008-09-09 2009-09-04 Device for railway maintenance

Publications (2)

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EP2337897A1 EP2337897A1 (en) 2011-06-29
EP2337897B1 true EP2337897B1 (en) 2015-06-03

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US (1) US8490548B2 (en)
EP (1) EP2337897B1 (en)
CN (1) CN102177297B (en)
FR (1) FR2935715B1 (en)
RU (1) RU2487208C2 (en)
WO (1) WO2010029248A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2972378B1 (en) * 2011-03-09 2013-03-29 Solytek SHELTER OF WELDING.
CN202809417U (en) * 2012-03-27 2013-03-20 武汉新瑞达激光工程有限责任公司 On-line type steel rail laser processing vehicle
DE102014008996A1 (en) * 2014-06-23 2015-12-24 Wolf Dieter Herf Divided double-track sprocket wheel for rail, two-way and street vehicles
CN104120673B (en) * 2014-07-08 2016-05-25 西安工程大学 T shape railway switch maintenance tool
US10286460B2 (en) 2017-04-07 2019-05-14 Robert J. Murphy Single-pass, single-radial layer, circumferential-progression fill-welding system, apparatus and method for refurbishing railway and other transit rails

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US2859706A (en) * 1955-09-22 1958-11-11 Nordberg Manufacturing Co Track working machine
CH624351A5 (en) * 1977-08-18 1981-07-31 Leo Ritler Rail vehicle, in particular for devices required for track workings
SU1084346A1 (en) * 1982-02-08 1984-04-07 Свердловское Специализированное Монтажно-Наладочное Управление "Цветметналадка" Self-indexing bogie for monitoring deviations from rectilinearity of crane track rail
US5080021A (en) * 1988-06-23 1992-01-14 Harnischfeger Corporation Apparatus and method for correcting skew of a traveling crane
DE59405715D1 (en) * 1994-02-01 1998-05-20 Plasser Bahnbaumasch Franz Device for grinding rails
US6207920B1 (en) * 1997-02-21 2001-03-27 Lincoln Global, Inc. Method and system for welding railroad rails
CN2367633Y (en) * 1998-12-24 2000-03-08 孟庆梁 Light steel-rail grinding machine
FR2806337B1 (en) * 2000-03-15 2002-05-31 Joseph Sauron Materiel Ind ARC WELDING PROCESS AND AUTOMATION USING FURNISHED WIRES
RU2253712C1 (en) * 2004-04-16 2005-06-10 Богданов Виктор Михайлович Rail reinforcement device
DE202006011589U1 (en) * 2006-07-28 2006-10-05 Robel Bahnbaumaschinen Gmbh Railway track maintenance vehicle has holder for reversibly fixing track processing machine fixed onto frame supports, movable longitudinally by drive and with transverse support with fixing device for reversible attachment of machine

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Publication number Publication date
CN102177297A (en) 2011-09-07
US20110168050A1 (en) 2011-07-14
FR2935715B1 (en) 2014-07-18
CN102177297B (en) 2012-12-05
RU2487208C2 (en) 2013-07-10
FR2935715A1 (en) 2010-03-12
EP2337897A1 (en) 2011-06-29
RU2011113825A (en) 2012-10-20
WO2010029248A1 (en) 2010-03-18
US8490548B2 (en) 2013-07-23

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