EP0145919B1 - Device for continuously reprofiling the head of at least one rail - Google Patents

Device for continuously reprofiling the head of at least one rail Download PDF

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Publication number
EP0145919B1
EP0145919B1 EP84113253A EP84113253A EP0145919B1 EP 0145919 B1 EP0145919 B1 EP 0145919B1 EP 84113253 A EP84113253 A EP 84113253A EP 84113253 A EP84113253 A EP 84113253A EP 0145919 B1 EP0145919 B1 EP 0145919B1
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EP
European Patent Office
Prior art keywords
rail
grinding unit
pivoting
axis
grinding
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Expired
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EP84113253A
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German (de)
French (fr)
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EP0145919A1 (en
Inventor
Romolo Panetti
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Speno International SA
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Speno International SA
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Publication date
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Priority to AT84113253T priority Critical patent/ATE27718T1/en
Publication of EP0145919A1 publication Critical patent/EP0145919A1/en
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Publication of EP0145919B1 publication Critical patent/EP0145919B1/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
    • 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
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding

Definitions

  • Machines using pivoting grinding units controlled are currently used for reprofiling the rails because it is thus possible to reduce the number of grinding wheels necessary and therefore to make compact machines.
  • These machines with controlled pivoting grinding units as described in patents CH 606,616 or CH 633,336, have in particular the drawback of requiring, during each angular adjustment of the position of the grinding wheel, to reposition the grinding wheel against the rail to be ground.
  • the angular amplitude of the pivoting of the grinding units is limited.
  • a device for reprofiling the fungus of at least one rail comprising a support carrying at least one grinding unit, pivotally mounted about an axis parallel to the axis longitudinal of the rail, having at least one grinding wheel driven in rotation by a motor and means of axial displacement of this grinding wheel to apply it against a generator of the rail head and thus compensating for its wear.
  • This known device also comprises means for moving the pivot axis of the grinding unit, parallel to itself, in a direction perpendicular to the longitudinal axis of the rail.
  • the object of the present invention is therefore to produce a machine in which the grinding wheel (s) can pivot by a large angle, of approximately 180 °, that is to say by a much greater angle than on existing machines, while avoiding that during its pivoting, the grinding wheel does not come into conflict with the obstacles it might encounter on the way, such as fishplates, lag screws, etc.
  • the subject of the present invention is a reprofiling device comprising the characteristics listed in claim 1.
  • Figure 1 shows schematically the principle of moving a grinding wheel according to the present invention.
  • the center of the active surface moves in 01, 02, 03, 04 and 05 successively for successive angular positions of the grinding wheel offset by 45 ° in the example illustrated, but this active surface of the grinding wheel always remains in contact or at immediate proximity to the rail head.
  • Such movement of the grinding wheel 3 can be obtained by the combination of a rotation of the grinding unit about an axis parallel to the longitudinal axis of the rail and a movement of this pivot axis, parallel to itself, in a direction perpendicular to the longitudinal axis of the rail 11.
  • the first embodiment of the device for the continuous reprofiling of the head of at least one rail of a railway track comprises a carriage 1 provided with flanged wheels 2 which are preferably applied without play against the rails using adequate resources.
  • This carriage 1 is thus guided longitudinally and transversely by the rails and is connected to a rail vehicle (not shown) by means ensuring traction.
  • This carriage 1 is also connected to the rail vehicle by lifting means causing relative displacements in height between the carriage 1 and the rail vehicle.
  • At least one grinding unit is mounted so as to be angularly movable relative to the latter about an axis substantially parallel to the longitudinal axis of the rail.
  • Each grinding unit comprises a grinding wheel 3 driven in rotation by a motor 4 sliding with the aid of slides 5 on a yoke 6 parallel to the axis of rotation of the grinding wheel 3.
  • This axial rectilinear movement of the grinding unit allows to apply it with. a determined force against the surface of the rail head and to compensate for its wear.
  • a jack 7 connects the yoke 6 to the motor 4 and thus allows the wheel 3 to be applied against a generator of the rail to be ground with a determined force causing it to move. axial to compensate for the wear of the grinding wheel.
  • the yoke 6 comprises two concentric pins 8, constituting the pivot axis of the grinding unit, pivoted in a slide 9 sliding on transverse guide bars 10 of the carriage 1, that is to say extending perpendicularly in the longitudinal plane of symmetry of the carriage and therefore of the rail 11 to be ground.
  • the grinding unit 3, 4, 7 is mounted on the carriage 1 so as to pivot around an axis parallel to the longitudinal axis of the rail; this pivot axis being movable parallel to itself in a direction perpendicular to the axis of said rail.
  • this displacement of the axis perpendicular to the axis of the rail 11 is rectilinear but in variants it could be linear, curvilinear or other.
  • the grinding unit 3, 4, 7 comprises means for driving the latter in its pivoting movements around the axis materialized by its two pins 8.
  • These means comprise a toothed wheel 14 , integral with a pin 8, engaged with a helical screw 15 journalled in the slide 9 and driven in rotation for example by a stepping motor 16.
  • These means may also include, as in the example illustrated, a sensor 17 supplying an indicator i of the angular position of the helical screw 15 relative to the slide. This angular indication corresponds to the inclination of the grinding unit 3, 4, 7 relative to the carriage 1.
  • An electromagnetic brake 18 can be provided to lock the grinding unit in a given angular position, which is necessary so that the angular position of this grinding unit is fixed during a grinding operation in the selected position corresponding to the grinding of a determined generator of rail 11.
  • the grinding unit 3, 4, 7 also comprises means for moving the pivot axis of the grinding unit comprising a screw 19 cooperating with a part 20 fixed to the cross member 12 of the carriage forming nut.
  • This screw is pivoted in the holes of the slide 9 but cannot move axially relative to the latter:
  • a stepping motor 21 drives the screw 19 in rotation and moves the slide 9 along its guide bars 10.
  • Means are provided for slaving between them the pivoting of the grinding unit and the movement of its pivot axis.
  • these means are constituted by an electrical synchronization device S of the two stepping motors 16 and 21 so that the angular displacements of the grinding unit and the displacement of its pivot axis are such that the center 0 of the active surface of the grinding wheel 3 follows the line A of FIG. 1. In this way the grinding wheel 3 can pass from a horizontal position to a vertical position, its active surface always remaining substantially at the same distance from the surface of the rail head 11, or even in contact with it.
  • the axial stroke of the grinding wheel is practically reduced to the axial stroke necessary for compensating for the wear of the grinding wheel and for positioning it. removal, out of service. Under these conditions, the size of the grinding unit is greatly reduced and therefore the guidance of the grinding wheel is more precise.
  • the grinding wheel 3 has four degrees of freedom; pivoting about the pivot axis 8 of the grinding unit; a translation of this axis 8 in a direction perpendicular to the longitudinal axis of the rail, an axial displacement in the direction of the rail and a rotation about its own axis.
  • two translational drives 19, 20, 21 and two pivoting drives 15, 16 can be provided, respectively. on either side of the slides 5.
  • the mounting of the grinding unit 3, 4, 7 on the carriage 1 is the same as in the first embodiment, only the drive means of the unit in its pivoting and driving the pivot axis of the grinding unit in its movements, are different.
  • a sensor 25 delivers an indication relating to the inclination of the grinding unit as a function of the linear position of the piston of the jack 22.
  • a position sensor 27 delivers an indication of the position of the slide 9 relative to the carriage 1 to a position indicator i.
  • a servo device S causes the cylinders to be supplied with working fluid in a synchronized manner so that the center 0 of the active surface of the grinding wheel 3 follows the path A illustrated in FIG. 1 so that for all the inclinations from the grinding wheel its distance from the rail head remains substantially constant.
  • the grinding unit 3, 4, 7 sliding in the yoke 6 is pivotally mounted via the pins 8 of the yoke 6 on the free end of levers 32 the other end of which is pivoted on the crosspieces 12 of the carriage 1.
  • These levers are actuated in angular framings around their articulation on the crosspieces 12 by jacks 33 fixed to the carriage and the piston of which is connected to the middle part of the lever 32.
  • pin (s) 8 are integral with toothed wheels 28 meshing with the internal toothing of toothed rings 29 which they are integral with the carriage.
  • a desmodromic connection is produced between the pivoting of the grinding unit and the displacement of its pivot axis which here always takes place parallel to itself and in directions perpendicular to the axis of the rail 11 but following a circular and no longer straight path.
  • the number of teeth of the crowns 29 and of the toothed wheels 28 is such that the center of the active surface of the grinding wheel 3 travels along the path A of FIG. 1 during the angular displacements of the levers 32.
  • the grinding unit is mounted on its support carriage so as to be able to pivot around an axis parallel to the longitudinal axis of the rail and so on the other hand that its pivot axis jointly undergoes a translation perpendicular to the longitudinal axis of the rail.
  • the grinding units can include grindstones, lapidaries or peripherals.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Character Spaces And Line Spaces In Printers (AREA)

Abstract

The device for reprofiling the head of at least one rail comprises a support (1, 2, 12, 13, 9) carrying at least one grinding unit (3, 4, 6, 7) pivotally mounted about an axis (8) extending parallel to the longitudinal axis of the rail (11). This grinding unit has a grinding wheel (3) driven in rotation by a motor (4) and structure (7) for displacing axially the grinding unit (3) to apply it against a side line of the head of the rail (11) and thus compensate its wearing off. It comprises structure (9, 10, 19, 20, 21) for displacing the axis of pivoting (8) of the grinding unit (3, 4, 6, 7) parallel to itself, in a direction transverse to the longitudinal axis of the rail (11). Servo-mechanism is provided to make dependent on each other the pivoting of the grinding unit (3, 4, 6, 7) and the displacement of its axis of pivoting (8).

Description

On utilise actuellement des machines comportant des unités de meulage pivotantes commandées pour le reprofilage des rails car il est ainsi possible de réduire le nombre de meules nécessaires et donc de réaliser des machines compactes. Ces machines à unités de meulage pivotantes commandées, telles que décrites dans les brevets CH 606.616 ou CH 633.336, présentent notamment l'inconvénient de nécessiter lors de chaque réglage angulaire de la position de la meule un repositionnement de la meule contre le rail à meuler. De plus, l'amplitude angulaire du pivotement des unités de meulage est limité.Machines using pivoting grinding units controlled are currently used for reprofiling the rails because it is thus possible to reduce the number of grinding wheels necessary and therefore to make compact machines. These machines with controlled pivoting grinding units, as described in patents CH 606,616 or CH 633,336, have in particular the drawback of requiring, during each angular adjustment of the position of the grinding wheel, to reposition the grinding wheel against the rail to be ground. In addition, the angular amplitude of the pivoting of the grinding units is limited.

Il est en outre connu du brevet GB-A-1.151.010 un dispositif pour le reprofilage du champignon d'au moins un rail comportant un support portant au moins une unité de meulage, montée pivotante autour d'un axe parallèle à l'axe longitudinal du rail, présentant au moins une meule entraînée en rotation par un moteur et des moyens de déplacement axial de cette meule pour l'appliquer contre une génératrice du champignon du rail et compensant ainsi son usure. Ce dispositif connu comporte également des moyens de déplacement de l'axe de pivotement de l'unité de meulage, parallèlement à lui-même, suivant une direction perpendiculaire à l'axe longitudinal du rail.It is also known from GB-A-1,151,010 a device for reprofiling the fungus of at least one rail comprising a support carrying at least one grinding unit, pivotally mounted about an axis parallel to the axis longitudinal of the rail, having at least one grinding wheel driven in rotation by a motor and means of axial displacement of this grinding wheel to apply it against a generator of the rail head and thus compensating for its wear. This known device also comprises means for moving the pivot axis of the grinding unit, parallel to itself, in a direction perpendicular to the longitudinal axis of the rail.

Le problème qui se pose actuellement pour les machines de reprofilage des rails est de pouvoir, avec la même meule, meuler aussi bien la face, le congé intérieur et la table de roulement que la face et le congé extérieur du rail. Ceci est notamment indispensable lorsqu'on prépare les rails pour le barreaudage. Avec les machines existantes, ceci ne peut se faire qu'avec des réglages manuels longs et des unités de meulage encombrantes, leur course axiale, parallèle à l'axe de rotation de la meule, devant être grande. Enfin, ces grandes courses axiales nuisent à la précision du meulage.The problem which currently arises for rail reprofiling machines is to be able, with the same grinding wheel, to grind both the face, the internal leave and the rolling table as well as the face and external leave of the rail. This is particularly essential when preparing the rails for the railing. With existing machines, this can only be done with long manual adjustments and bulky grinding units, their axial stroke, parallel to the axis of rotation of the grinding wheel, having to be large. Finally, these large axial strokes affect the precision of grinding.

Le but de la présente invention est donc de réaliser une machine dont la ou les meules puissent pivoter d'un grand angle, d'environ 180°, soit d'un angle beaucoup plus grand que sur les machines existantes, tout en évitant qu'au cours de son pivotement la meule n'entre en conflit avec les obstacles qu'elle pourrait rencontrer en voie, tels les éclisses, tire-fonds, etc. De plus, pour assurer une bonne qualité du meulage, il faut éviter qu'un changement d'inclinaison de la meule n'entraîne une correction importante de sa position axiale, parallèle à son axe de rotation, pour la ramener en contact avec le rail.The object of the present invention is therefore to produce a machine in which the grinding wheel (s) can pivot by a large angle, of approximately 180 °, that is to say by a much greater angle than on existing machines, while avoiding that during its pivoting, the grinding wheel does not come into conflict with the obstacles it might encounter on the way, such as fishplates, lag screws, etc. In addition, to ensure good quality of the grinding, it is necessary to avoid that a change of inclination of the grinding wheel does not entail a significant correction of its axial position, parallel to its axis of rotation, to bring it back into contact with the rail. .

La présente invention a pour objet un dispositif de reprofilage comprenant les caractéristiques énumérées à la revendication 1.The subject of the present invention is a reprofiling device comprising the characteristics listed in claim 1.

Le dessin annexé illustre schématiquement et à titre d'exemple trois formes d'exécution du dispositif selon l'invention.

  • La figure 1 est un schéma illustrant la trajectoire du centre de la surface active de la meule lors du pivotement de l'unité de meulage autour de son axe qui est parallèle à l'axe longitudinal du rail.
  • La figure 2 est une vue de côté, partielle, d'un chariot porte-meules suivant une première forme d'exécution.
  • La figure 3 est une vue partielle de dessus du dispositif illustré à la figure 2.
  • La figure 4 est une vue en bout du dispositif illustré à la figure 2.
  • La figure 5 est une vue semblable à la figure 4 d'une seconde forme d'exécution du dispositif.
  • La figure 6 illustre schématiquement une troisième forme d'exécution du dispositif.
The accompanying drawing illustrates schematically and by way of example three embodiments of the device according to the invention.
  • FIG. 1 is a diagram illustrating the trajectory of the center of the active surface of the grinding wheel when the grinding unit is pivoted about its axis which is parallel to the longitudinal axis of the rail.
  • Figure 2 is a partial side view of a grinding wheel carriage according to a first embodiment.
  • FIG. 3 is a partial top view of the device illustrated in FIG. 2.
  • FIG. 4 is an end view of the device illustrated in FIG. 2.
  • Figure 5 is a view similar to Figure 4 of a second embodiment of the device.
  • Figure 6 schematically illustrates a third embodiment of the device.

La figure 1 schématise le principe du déplacement d'une meule selon la présente invention. Pour obtenir le résultat désiré, soit le pivotement de la meule de 180° tout en maintenant celle-ci au contact du rail ou, lorsque celui-ci est déformé, à sa proximité immédiate, on déplace le centre 0 de la surface active de la meule le long de la ligne A tout en provoquant une rotation de la meule autour d'un axe parallèle à l'axe longitudinal du rail. Le centre de la surface active se déplace en 01, 02, 03, 04 et 05 successivement pour des positions angulaires de la meule successives décalées de 45° dans l'exemple illustré, mais cette surface active de la meule reste toujours au contact ou à proximité immédiate du champignon du rail. Un tel mouvement de la meule 3 peut être obtenu grâce à la combinaison d'une rotation de l'unité de meulage autour d'un axe parallèle à l'axe longitudinal du rail et d'un déplacement de cet axe de pivotement, parallèlement à lui-même, suivant une direction perpendiculaire à l'axe longitudinal du rail 11.Figure 1 shows schematically the principle of moving a grinding wheel according to the present invention. To obtain the desired result, either rotate the grinding wheel 180 ° while keeping it in contact with the rail or, when the latter is deformed, in its immediate vicinity, the center 0 of the active surface of the grinding wheel along line A while causing the grinding wheel to rotate about an axis parallel to the longitudinal axis of the rail. The center of the active surface moves in 01, 02, 03, 04 and 05 successively for successive angular positions of the grinding wheel offset by 45 ° in the example illustrated, but this active surface of the grinding wheel always remains in contact or at immediate proximity to the rail head. Such movement of the grinding wheel 3 can be obtained by the combination of a rotation of the grinding unit about an axis parallel to the longitudinal axis of the rail and a movement of this pivot axis, parallel to itself, in a direction perpendicular to the longitudinal axis of the rail 11.

La première forme d'exécution du dispositif pour le reprofilage en continu du champignon d'au moins un rail d'une voie ferrée comporte un chariot 1 muni de roues à boudin 2 qui sont de préférence appliquées sans jeu contre les rails à l'aide de moyens adéquats. Ce chariot 1 est ainsi guidé longitudinalement et transversalement par les rails et est relié à un véhicule ferroviaire (non illustré) par des moyens en assurant la traction. Ce chariot 1 est encore relié au véhicule ferroviaire par des moyens de relevage provoquant des déplacements relatifs en hauteur entre le chariot 1 et le véhicule ferroviaire.The first embodiment of the device for the continuous reprofiling of the head of at least one rail of a railway track comprises a carriage 1 provided with flanged wheels 2 which are preferably applied without play against the rails using adequate resources. This carriage 1 is thus guided longitudinally and transversely by the rails and is connected to a rail vehicle (not shown) by means ensuring traction. This carriage 1 is also connected to the rail vehicle by lifting means causing relative displacements in height between the carriage 1 and the rail vehicle.

Sur ce chariot 1, au moins une unité de meulage est montée de manière à être déplaçable angulairement par rapport à celui-ci autour d'un axe sensiblement parallèle à l'axe longitudinal du rail. Chaque unité de meulage comporte une meule 3 entraînée en rotation par un moteur 4 coulissant à l'aide de glissières 5 sur un joug 6 parallèlement à l'axe de rotation de la meule 3. Ce déplacement rectiligne axial de l'unité de meulage permet de l'appliquer avec. une force déterminée contre Ja surface du champignon du rail et de compenser son usure. Un vérin 7 relie le joug 6 au moteur 4 et permet ainsi d'appliquer la meule 3 contre une génératrice du rail à meuler avec une force déterminée en provoquant ses déplacements axiaux pour compenser l'usure de la meule.On this carriage 1, at least one grinding unit is mounted so as to be angularly movable relative to the latter about an axis substantially parallel to the longitudinal axis of the rail. Each grinding unit comprises a grinding wheel 3 driven in rotation by a motor 4 sliding with the aid of slides 5 on a yoke 6 parallel to the axis of rotation of the grinding wheel 3. This axial rectilinear movement of the grinding unit allows to apply it with. a determined force against the surface of the rail head and to compensate for its wear. A jack 7 connects the yoke 6 to the motor 4 and thus allows the wheel 3 to be applied against a generator of the rail to be ground with a determined force causing it to move. axial to compensate for the wear of the grinding wheel.

Le joug 6 comporte deux tourillons concentriques 8, constituant l'axe de pivotement de l'unité de meulage, pivotés dans un coulisseau 9 coulissant sur des barres de guidage transversales 10 du chariot 1, c'est-à-dire s'étendant perpendiculairement au plan de symétrie longitudinal du chariot et donc du rail 11 devant être meulé.The yoke 6 comprises two concentric pins 8, constituting the pivot axis of the grinding unit, pivoted in a slide 9 sliding on transverse guide bars 10 of the carriage 1, that is to say extending perpendicularly in the longitudinal plane of symmetry of the carriage and therefore of the rail 11 to be ground.

Ces barres de guidage sont reliées à des traverses 12 du chariot, elles-mêmes fixées aux longerons centraux 13 du châssis dudit chariot 1.These guide bars are connected to cross members 12 of the carriage, themselves fixed to the central beams 13 of the chassis of said carriage 1.

De cette façon l'unité de meulage 3, 4, 7 est montée sur le chariot 1 de manière à pivoter autour d'un axe parallèle à l'axe longitudinal du rail; cet axe de pivotement étant déplaçable parallèlement à lui-même suivant une direction perpendiculaire à l'axe dudit rail. Dans l'exemple illustré ce déplacement de l'axe perpendiculairement à l'axe du rail 11 est rectiligne mais dans des variantes il pourrait être linéaire, curviligne ou autre.In this way the grinding unit 3, 4, 7 is mounted on the carriage 1 so as to pivot around an axis parallel to the longitudinal axis of the rail; this pivot axis being movable parallel to itself in a direction perpendicular to the axis of said rail. In the example illustrated, this displacement of the axis perpendicular to the axis of the rail 11 is rectilinear but in variants it could be linear, curvilinear or other.

Dans l'exemple illustré, l'unité de meulage 3, 4, 7 comporte des moyens d'entraînement de celle-ci dans ses mouvements de pivotement autour de l'axe matérialisé par ses deux tourillons 8. Ces moyens comportent une roue dentée 14, solidaire d'un tourillon 8, en prise avec une vis hélicoïdale 15 tourillonnée dans le coulisseau 9 et entraînée en rotation par exemple par un moteur pas à pas 16. Ces moyens peuvent encore comporter, comme dans l'exemple illustré, un capteur 17 alimentant un indicateur i de la position angulaire de la vis hélicoïdale 15 par rapport au coulisseau. Cette indication angulaire correspond à l'inclinaison de l'unité de meulage 3, 4, 7 par rapport au chariot 1.In the example illustrated, the grinding unit 3, 4, 7 comprises means for driving the latter in its pivoting movements around the axis materialized by its two pins 8. These means comprise a toothed wheel 14 , integral with a pin 8, engaged with a helical screw 15 journalled in the slide 9 and driven in rotation for example by a stepping motor 16. These means may also include, as in the example illustrated, a sensor 17 supplying an indicator i of the angular position of the helical screw 15 relative to the slide. This angular indication corresponds to the inclination of the grinding unit 3, 4, 7 relative to the carriage 1.

Un frein électromagnétique 18 peut être prévu pour bloquer l'unité de meulage dans une position angulaire donnée, ce qui est nécessaire pour que la position angulaire de cette unité de meulage soit fixe pendant une opération de meulage dans la position sélectionnée correspondant au meulage d'une génératrice déterminée du rail 11.An electromagnetic brake 18 can be provided to lock the grinding unit in a given angular position, which is necessary so that the angular position of this grinding unit is fixed during a grinding operation in the selected position corresponding to the grinding of a determined generator of rail 11.

Dans l'exemple illustré, l'unité de meulage 3, 4, 7 comporte encore des moyens de déplacement de l'axe de pivotement de l'unité de meulage comportant une vis 19 coopérant avec une partie 20 fixée à la traverse 12 du chariot formant écrou. Cette vis est pivotée dans des perçages du coulisseau 9 mais ne peut pas se déplacer axialement par rapport à celui-ci: Un moteur pas à pas 21 entraîne la vis 19 en rotation et déplace le coulisseau 9 le long de ses barres de guidage 10.In the example illustrated, the grinding unit 3, 4, 7 also comprises means for moving the pivot axis of the grinding unit comprising a screw 19 cooperating with a part 20 fixed to the cross member 12 of the carriage forming nut. This screw is pivoted in the holes of the slide 9 but cannot move axially relative to the latter: A stepping motor 21 drives the screw 19 in rotation and moves the slide 9 along its guide bars 10.

On peut également prévoir un capteur permettant de déterminer la position angulaire de la vis 19 et donc la position du coulisseau 9 par rapport au chariot 1, de même qu'un blocage électromagnétique de la vis pour fixer la position du coulisseau 9 par rapport au chariot 1.One can also provide a sensor for determining the angular position of the screw 19 and therefore the position of the slide 9 relative to the carriage 1, as well as an electromagnetic blocking of the screw to fix the position of the slide 9 relative to the carriage 1.

Des moyens sont prévus pour asservir entre eux le pivotement de l'unité de meulage et le déplacement de son axe de pivotement. Dans cette réalisation ces moyens sont constitués par un dispositif électrique de synchronisation S des deux moteurs pas à pas 16 et 21 pour que les déplacements angulaires de l'unité de meulage et le déplacement de son axe de pivotement soient tels que le centre 0 de la surface active de la meule 3 suive la ligne A de la figure 1. De cette façon la meule 3 peut passer d'une position horizontale à une position verticale, sa surface active restant toujours sensiblement à la même distance de la surface du champignon du rail 11, voire en contact avec celle-ci.Means are provided for slaving between them the pivoting of the grinding unit and the movement of its pivot axis. In this embodiment, these means are constituted by an electrical synchronization device S of the two stepping motors 16 and 21 so that the angular displacements of the grinding unit and the displacement of its pivot axis are such that the center 0 of the active surface of the grinding wheel 3 follows the line A of FIG. 1. In this way the grinding wheel 3 can pass from a horizontal position to a vertical position, its active surface always remaining substantially at the same distance from the surface of the rail head 11, or even in contact with it.

Grâce à cette disposition et aux déplacements en rotation et en translation de l'unité de meulage, la course axiale de la meule est pratiquement réduite à la course axiale nécessaire pour la compensation de l'usure de la meule et pour sa mise en position de retrait, hors service. Dans ces conditions, l'encombrement de l'unité de meulage est fortement réduit et par conséquent le guidage de la meule est plus précis.Thanks to this arrangement and to the rotational and translational displacements of the grinding unit, the axial stroke of the grinding wheel is practically reduced to the axial stroke necessary for compensating for the wear of the grinding wheel and for positioning it. removal, out of service. Under these conditions, the size of the grinding unit is greatly reduced and therefore the guidance of the grinding wheel is more precise.

On remarque que suivant le concept de l'invention, la meule 3 a quatre degrés de liberté; un pivotement autour de l'axe de pivotement 8 de l'unité de meulage; une translation de cet axe 8 suivant une direction perpendiculaire à l'axe longitudinal du rail, un déplacement axial en direction du rail et une rotation autour de son axe propre.Note that according to the concept of the invention, the grinding wheel 3 has four degrees of freedom; pivoting about the pivot axis 8 of the grinding unit; a translation of this axis 8 in a direction perpendicular to the longitudinal axis of the rail, an axial displacement in the direction of the rail and a rotation about its own axis.

Dans une variante, il est évident que pour des questions de guidage de l'unité de meulage dans ses déplacements de translation et de pivotement, on peut prévoir deux entraînements en translation 19,20,21 et deux entraînements en pivotement 15, 16 disposés respectivement de part et d'autre des glissières 5.In a variant, it is obvious that for reasons of guiding the grinding unit in its translation and pivoting movements, two translational drives 19, 20, 21 and two pivoting drives 15, 16 can be provided, respectively. on either side of the slides 5.

Dans une forme d'exécution simplifiée on peut utiliser un seul moteur entraînant en rotation la vis hélicoïdale commandant le pivotement de l'unité et la vis commandant le déplacement de l'axe de pivotement de cette unité. Ces deux vis pourraient être venues d'une seule pièce de fabrication. Dans ce cas, le mouvement conjugué, translation - pivotement de l'unité de meulage est entièrement déterminé par construction et suivant le profil du champignon du rail la meule reste à une distance sensiblement constante dudit champignon du rail au cours de ses déplacements. L'avantage de cette solution réside dans la simplicité des moyens d'entraînement de l'unité de meulage en pivotement et en translation.In a simplified embodiment, it is possible to use a single motor driving in rotation the helical screw controlling the pivoting of the unit and the screw controlling the displacement of the pivot axis of this unit. These two screws could have come from a single workpiece. In this case, the combined movement, translation - pivoting of the grinding unit is entirely determined by construction and according to the profile of the rail head the grinding wheel remains at a substantially constant distance from said rail head during its movements. The advantage of this solution lies in the simplicity of the means for driving the grinding unit in pivoting and in translation.

Dans la seconde forme d'exécution illustrée à la figure 5 le montage de l'unité de meulage 3, 4, 7 sur le chariot 1 est le même que dans la première forme d'exécution, seuls les moyens d'entraînement de l'unité dans ses pivotements et d'entraînement de l'axe de pivotement de l'unité de meulage dans ses déplacements, sont différents.In the second embodiment illustrated in FIG. 5, the mounting of the grinding unit 3, 4, 7 on the carriage 1 is the same as in the first embodiment, only the drive means of the unit in its pivoting and driving the pivot axis of the grinding unit in its movements, are different.

Le pivotement de l'unité de meulage 3,4, 7 autour de ses tourillons 8 est obtenu grâce à un vérin 22 fixé sur le coulisséau 9, actionnant une crémaillère 23 en prise avec un pignon 24 solidaire du tourillon 8. Un capteur 25 délivre une indication relative à l'inclinaison de l'unité de meulage en fonction de la position linéaire du piston du vérin 22.The pivoting of the grinding unit 3, 4, 7 around its pins 8 is obtained by means of a jack 22 fixed on the slide 9, actuating a rack 23 engaged with a pinion 24 integral with the journal 8. A sensor 25 delivers an indication relating to the inclination of the grinding unit as a function of the linear position of the piston of the jack 22.

L'entraînement de l'axe de pivotement dans ses déplacements et dans la translation de l'unité de meulage s'effectue à l'aide d'un vérin 26, fixé sur le chariot, dont le piston actionne le coulisseau 9 le long des barres de guidage 10. Un capteur de position 27 délivre une indication sur la position du coulisseau 9 par rapport au chariot 1 à un indicateur de position i.The drive of the pivot axis in its movements and in the translation of the grinding unit is carried out using a jack 26, fixed on the carriage, the piston of which actuates the slide 9 along the guide bars 10. A position sensor 27 delivers an indication of the position of the slide 9 relative to the carriage 1 to a position indicator i.

Ici également un dispositif d'asservissement S provoque l'alimentation des vérins en fluide moteur de façon synchronisée pour que le centre 0 de la surface active de la meule 3 suive le chemin A illustré à la figure 1 de telle sorte que pour toutes les inclinaisons de la meule sa distance au champignon du rail reste sensiblement constante.Here also a servo device S causes the cylinders to be supplied with working fluid in a synchronized manner so that the center 0 of the active surface of the grinding wheel 3 follows the path A illustrated in FIG. 1 so that for all the inclinations from the grinding wheel its distance from the rail head remains substantially constant.

Dans une troisième forme d'exécution schématiquement représentée à la figure 6, l'unité de meulage 3, 4, 7 coulissant dans le joug 6 est montée pivotante par l'intermédiaire des tourillons 8 du joug 6 sur l'extrémité libre de leviers 32 dont l'autre extrémité est pivotée sur les traverses 12 du chariot 1. Ces leviers sont actionnés dans des ébats angulaires autour de leur articulation sur les traverses 12 par des vérins 33 fixés au chariot et dont le piston est relié à la partie médiane du levier 32.In a third embodiment schematically shown in Figure 6, the grinding unit 3, 4, 7 sliding in the yoke 6 is pivotally mounted via the pins 8 of the yoke 6 on the free end of levers 32 the other end of which is pivoted on the crosspieces 12 of the carriage 1. These levers are actuated in angular framings around their articulation on the crosspieces 12 by jacks 33 fixed to the carriage and the piston of which is connected to the middle part of the lever 32.

Dans cette exécution le ou les tourillons 8 sont solidaires de roues dentées 28 engrenant avec la denture interne de couronnes dentées 29 qui elles sont solidaires du chariot.In this embodiment the pin (s) 8 are integral with toothed wheels 28 meshing with the internal toothing of toothed rings 29 which they are integral with the carriage.

Ainsi dans cette exécution, on réalise une liaison desmodromique entre le pivotement de l'unité de meulage et le déplacement de son axe de pivotement qui s'effectue ici toujours parallèlement à lui-même et suivant des directions perpendiculaires à l'axe du rail 11 mais suivant un parcours circulaire et non plus rectiligne. Dans une telle exécution le nombre de dents des couronnes 29 et des roues dentées 28 est tel que le centre de la surface active de la meule 3 parcourt le chemin A de la figure 1 lors des déplacements angulaires des leviers 32.Thus in this embodiment, a desmodromic connection is produced between the pivoting of the grinding unit and the displacement of its pivot axis which here always takes place parallel to itself and in directions perpendicular to the axis of the rail 11 but following a circular and no longer straight path. In such an embodiment, the number of teeth of the crowns 29 and of the toothed wheels 28 is such that the center of the active surface of the grinding wheel 3 travels along the path A of FIG. 1 during the angular displacements of the levers 32.

D'une façon générale, on voit que selon l'invention il est possible de faire pivoter une meule pour qu'elle puisse agir sur toute la surface du champignon d'un rail tout en maintenant sa distance au champignon du rail sensiblement constante, voire en appui sur ce rail si le vérin d'avance 7 est sous pression. De plus, ce qui est également très important, la zone balayée par la meule lors de ses déplacements n'interfère pas avec des éclisses 30, des tire-fonds 31 ou tout autre obstacle pouvant se trouver le long ou à proximité du rail.In general, we see that according to the invention it is possible to rotate a grinding wheel so that it can act on the entire surface of the head of a rail while maintaining its distance from the head of the rail substantially constant, even resting on this rail if the advance cylinder 7 is under pressure. In addition, which is also very important, the area swept by the grinding wheel during its movements does not interfere with fishplates 30, lag screws 31 or any other obstacle that may be along or near the rail.

Ce résultat est obtenu conformément à l'invention en ce que l'unité de meulage est montée sur son chariot-support de manière d'une part à pouvoir pivoter autour d'un axe parallèle à l'axe longitudinal du rail et de manière, d'autre part que son axe de pivotement subisse conjointement une translation perpendiculaire à l'axe longitudinal du rail.This result is obtained in accordance with the invention in that the grinding unit is mounted on its support carriage so as to be able to pivot around an axis parallel to the longitudinal axis of the rail and so on the other hand that its pivot axis jointly undergoes a translation perpendicular to the longitudinal axis of the rail.

Dans des variantes, il est possible de jumeler deux unités de meulage qui seraient alors entraînées par les mêmes moyens d'entraînement en pivotement et en translation.In variants, it is possible to combine two grinding units which would then be driven by the same drive means in pivoting and in translation.

Les unités de meulage peuvent comporter des meules, lapidaires ou périphériques.The grinding units can include grindstones, lapidaries or peripherals.

Toutes les formes d'exécution décrites se rapportent au meulage en continu et en voie des rails d'une voie de chemin de fer posée. Toutefois il est évident que le dispositif de reprofilage peut être monté sur un support fixe et prévoir des moyens provoquant le déplacement d'un rail par rapport à ce support. De cette façon, il est possible de reprofiler en usine toutes sortes de rails.All the embodiments described relate to the continuous grinding and on track of the rails of a laid railway track. However it is obvious that the reprofiling device can be mounted on a fixed support and provide means causing the displacement of a rail relative to this support. In this way, it is possible to reprofile all kinds of rails in the factory.

Claims (8)

1. Device for reprofiling the head of at least one rail (11) comprising a support (1) carrying at least one grinding unit, pivotally mounted around an axis (8) extending parallel to the longitudinal axis of the rail (11), having at least one grinding wheel (3) driven in rotation by a motor (4) and means (5, 7) for axially displacing said grinding wheel (3) to apply it against a side line of the head of the rail (11) and thus compensating its wearing off, as well as means for (9, 10) displacing the axis (8) of pivoting of the grinding unit, parallel to itself, in a direction perpendicular to the longitudinal axis of the rail (11), characterized by the fact that it comprises servo- control means (S) of the pivoting of the grinding unit and of the displacement of its axis (8) between themselves, and by the fact that the motor (4) of each grinding unit is slidably mounted, parallel to the axis of rotation of the grinding wheel (3), on a joke (6); the means (5, 7) for axially displacing the grinding wheel (3) being located between the motor (4) and the joke (6) and permitting to slide them the one with respect to the other.
2. Device according to claim 1, characterized by the fact that each grinding unit is pivoted on a sliding block (9) mounted on slides (10) carried by the support (1); these slides (10) extending perpendicular to the longitudinal axis of the rail (11).
3. Device according to one of the preceeding claims, characterized by the fact that it comprises driving means (14, 15, 16) of the grinding unit in its pivoting movement comprising a motor (16), as well as the means displacing the axis of pivoting of said grinding unit; and by the fact that the servo-mechanism (S) synchronises the two motors (16, 21) so that for a pivoting of about 180° of the grinding wheel (3), the distance of said grinding wheel with respect to the rail (11) remains substantially constant.
4. Device according to claim 1, characterized by the fact that the grinding unit is linked to the support (1) by means of a desmodromic linkage synchronising the pivoting of said grinding unit and the displacement of its axis of pivoting (8) and by the fact that only one motor (33) drives the grinding unit simultaneously in its conjugated displacement of pivoting and translation.
5. Device according to one of the preceeding claims, characterized by the fact that the means driving the grinding unit in its movement of pivoting and/or of displacement of its axis of pivoting comprise displays of the position (i) of this grinding unit.
6. Device according to one of the preceeding claims, characterized by the fact that it comprises further locking means of the grinding unit in its different working positions.
7. Device according to one of the preceeding claims, characterized by the fact that the support is formed by a carriage (1) longitudinally and transversally guided by the rails (11) of a railroad track, and that it comprises means connecting this carriage to a railroad vehicle driving it along the track and lifting means causing relative displacements in height between the carriage and the railroad vehicle.
8. Device according to claim 7, characterized by the fact that it comprises means maintaining flanged wheels (2) of the carriage (1) in lateral contact with the rail (11) to guarantee a guiding of the carriage (1) on the track without play.
EP84113253A 1983-11-16 1984-11-03 Device for continuously reprofiling the head of at least one rail Expired EP0145919B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84113253T ATE27718T1 (en) 1983-11-16 1984-11-03 DEVICE FOR CONTINUOUS RAIL HEAD REPROFILING ON AT LEAST ONE RAIL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6152/83 1983-11-16
CH6152/83A CH666068A5 (en) 1983-11-16 1983-11-16 DEVICE FOR THE CONTINUOUS REPROFILING OF THE MUSHROOM OF AT LEAST ONE RAIL.

Publications (2)

Publication Number Publication Date
EP0145919A1 EP0145919A1 (en) 1985-06-26
EP0145919B1 true EP0145919B1 (en) 1987-06-10

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EP84113253A Expired EP0145919B1 (en) 1983-11-16 1984-11-03 Device for continuously reprofiling the head of at least one rail

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US (1) US4596092A (en)
EP (1) EP0145919B1 (en)
JP (1) JPS60119801A (en)
AT (1) ATE27718T1 (en)
AU (1) AU565022B2 (en)
CA (1) CA1227930A (en)
CH (1) CH666068A5 (en)
DE (2) DE145919T1 (en)
ZA (1) ZA848906B (en)

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JPH0455050Y2 (en) * 1986-03-31 1992-12-24
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CH688654A5 (en) * 1993-05-21 1997-12-31 Speno International Device for fixing a lapidary wheel on the shaft of a motor of a grinding unit of a railway rail.
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CH689643A5 (en) * 1994-02-18 1999-07-30 Speno International An installation for reprofiling the rails of a railway.
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Also Published As

Publication number Publication date
ATE27718T1 (en) 1987-06-15
EP0145919A1 (en) 1985-06-26
DE3464145D1 (en) 1987-07-16
ZA848906B (en) 1985-07-31
JPH0414202B2 (en) 1992-03-12
DE145919T1 (en) 1985-09-26
JPS60119801A (en) 1985-06-27
CA1227930A (en) 1987-10-13
AU3547384A (en) 1985-05-23
US4596092A (en) 1986-06-24
CH666068A5 (en) 1988-06-30
AU565022B2 (en) 1987-09-03

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