EP0789108A1 - Carriage provided with grinding or machining tools for the rolling surface and the mushroom portion of railway rails - Google Patents

Carriage provided with grinding or machining tools for the rolling surface and the mushroom portion of railway rails Download PDF

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Publication number
EP0789108A1
EP0789108A1 EP97810057A EP97810057A EP0789108A1 EP 0789108 A1 EP0789108 A1 EP 0789108A1 EP 97810057 A EP97810057 A EP 97810057A EP 97810057 A EP97810057 A EP 97810057A EP 0789108 A1 EP0789108 A1 EP 0789108A1
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EP
European Patent Office
Prior art keywords
longitudinal axis
tool holders
track
bogies
axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP97810057A
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German (de)
French (fr)
Inventor
Friz Bühler
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Scheuchzer SA
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Scheuchzer SA
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Filing date
Publication date
Application filed by Scheuchzer SA filed Critical Scheuchzer SA
Publication of EP0789108A1 publication Critical patent/EP0789108A1/en
Withdrawn legal-status Critical Current

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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

  • the invention relates to a carriage equipped with at least one grinding or machining tool for reprofiling the running surface and the head of railroad tracks.
  • the object of the present invention is to provide a grinding carriage allowing precise guidance of the tools.
  • Figures 1 and 2 show a side view and a top view of two coupled grinding carriages of type A and type B.
  • Figure 3 shows the bogies of the tool holders of carriages A and B.
  • Figures 3.1 and 3.2 show two variants of the centering device.
  • Figure 4 shows the oscillating device of the carriage A.
  • FIGS 5 and 6 show grinding units with peripheral grinding wheels.
  • Figure 7 is a schematic representation of the wheelhouse to position the grinding units in the curves of the track.
  • Figure 8 shows a grinding head with a cup wheel.
  • Figures 9 and 10 show grinding units with cup wheels.
  • Figures 11 and 12 show grinding carriages with a rigid frame.
  • the central chassis 1 of the carriage A comprises the arms 1.1 and 1.2 and it is pivotally connected to the left tool holders 4.1 and right and 4.2 by means of the shafts 3.
  • the tool holders 4.1 and 4.2 are based on the rails 10 by the bogies 6 through the axes 9. These tool holders 4.1 and 4.2 form with the supports 4.3 and 4.4 a rigid unit.
  • the central chassis 1 is supported by a shaft 11 on the oscillating device according to FIG. 4 and thus provides support at three points of the carriage by means of the bogies 7.
  • the tool holders 4.1 and 4.2 are interconnected by a connecting rod 13 and by a spacer device comprising the cylinders 15 and 16.
  • the cylinder 15 allows the bogies 6 to pivot towards one another in order to facilitate their dragging while the cylinder 16 makes it possible to press the bogies against the rails so that by the tie rod 13, the longitudinal axis of the central chassis 1 is centered on the longitudinal axis of the track independently of any overstepping thereof.
  • the spacing of the bogies corresponds to a normal spacing of the track, which allows the points to pass without problems.
  • the oscillating device shown in FIG. 4 comprises an oscillating arm 17, connected to the left 18 and right 20 supports and to the two bogies 7 by the pins 14.
  • a tie rod 19 and a spacer device, comprising the cylinders 21 and 22 synchronize the opening or closing of the bogies 7 of the oscillating device in the same way as the tie rod 13 and the cylinders 15 and 16 act on the bogies 6 of the tool holders 4.1 and 4.2 shown in FIG. 3.
  • the centering of the grinding carriage on the track is achieved by means of the two levers 66 and 67, each of them forming a rigid unit with the tool holders 4.1 and 4.2, and the levers 66 and 67 being interconnected by means of the sliding bearing 68 and the axis 69.
  • the spacing tool holders can be modified either by the cylinders 15 and 16, or by the double-stroke cylinder 70 which is fixed to the central chassis 1 and to the two levers 66 and 67.
  • the third embodiment of the centering device is shown in Figure 3.2.
  • the longitudinal axis of the grinding carriage is centered on the longitudinal axis of the track by means of tie rods 71 and 72 which are connected on one side to the tool holders 4.1, 4.2 and on the other side to an intermediate lever 73.
  • This intermediate lever 73 is pivotally mounted on the central chassis 1 by means of an axis 74.
  • a modification of the spacing of the tool holders 4.1 and 4.2 is produced either by the cylinders 15 and 16, or by the double stroke cylinder 75.
  • the longitudinal axis of the carriage is effectively centered precisely on the longitudinal axis of the track only in this third embodiment.
  • the theoretical error which appears in the first and in the second embodiment is approximately 0.01 to 0.03 mm, depending on the relationships between the different tie rods and levers, which in practice can be overlooked.
  • the oscillating device can also be provided with a centering device according to one or the other of the various embodiments described thereof.
  • the grinding carriage A is constructed for grinding units with peripheral wheels and the tool holders 4.1, 4.2 comprise for this purpose transverse supports formed by the screwed bearings 29 and the shafts 28.
  • the bogies 6 and 7 have the shape of skids and include flanged wheels 23 and support wheels 24. The bogies are linked in an oscillating manner to the carriage by means of the axes 9.
  • the grinding units comprising the peripheral grinding wheels according to FIGS. 5 and 6, further comprise a grinding head 26 and a frame 27, which is movably fixed to the guides 28.
  • the grinding head comprises a grinding disc 30, a spindle 31, an electric motor 32 which drives the grinding disc 30 by means of a belt 33 and a tension roller 25.
  • the spindle 31 and the support of the electric motor 32 form a rigid unit which is guided vertically by the vertical guides 35 of the frame 27.
  • the grinding disc 30 can be moved up or down by means of an adjustment cylinder 36.
  • a suitable servo control also makes it possible to maintain a constant grinding pressure and a computer positions and controls the adjustment cylinder 36 as a function of the corrugations to be ground by means of a displacement sensor.
  • the movable frame 27, by the adjustable rods 44, allows on the one hand to place the grinding disc 30 in the desired position relative to the axis of the rail 10, so that the mushroom thereof can be ground in the directions e and f shown in Figure 5 and on the other hand to guide the grinding head precisely following the geometry of the track by means of a wheelhouse, which itself is controlled by the previous carriage or the next cart.
  • two joints 38 are located on the arm 2.1 of the grinding carriage B, FIG. 2, joints which are exactly in the longitudinal axis of the bogies 6 and which are connected to the grinding units by the rods 39, 40 and 41 , the levers 42 and 43 and the adjustable length bars 44.
  • the reduction ratios between the levers 42 and 43 are fixed as a function of the distances a and b between the axes of the carriages and the distances c and d of the grinding units.
  • FIG. 7 schematically represents the carriages A and B in a curve of the track and the displacements h1 and h2 of the grinding units which correspond to the arrows f1 and f2, as a function of the angle ⁇ and of the gear reduction ratio .
  • the carriage B is constructed in a similar manner to the carriage A.
  • the central chassis 2 comprises arms 2.1, 2.2 and is connected by the shafts 3 to the oscillating tool holders 5.1 and 5.2, which in turn are supported on the rails 10 by the bogies 8.
  • the centering of the longitudinal axis of the central chassis 2 on the longitudinal axis of the track and that of the axis of the tools relative to the longitudinal axis of each rail is carried out in the same way as on the carriage A, i.e. by a centering and spacing device as shown in Figures 3, 3.1 and 3.2, and if necessary by a wheelhouse 39, 40, 41, 43 and 44 like that shown in Figure 2.
  • the chassis 2 is connected to the chassis of the carriage A by a shaft 37 through an articulation which is exactly in the axis of the flanged wheels of the bogies 6.
  • the carriage B is it is intended for grinding units with cup wheels and the tool holders 5.1, 5.2 have inclined bearings 58 and an adjusting member 62.
  • the cup wheels do not reproduce the ridges and undulations, these being more small than the diameter of the grinding wheels, the carriage only has normal flanged wheels 8.
  • the grinding unit with the cup wheels shown in FIG. 9 comprises a grinding head as shown in FIG. 8 and an oscillating frame as shown in FIG. 10.
  • the grinding head comprises a grinding disc 46, a bearing 47 and a guide tube 48 and forms a rigid assembly on which an electric motor is screwed.
  • the grinding disc 46 is driven directly by the engine through a clutch.
  • the grinding head is moved and positioned in height by means of an adjustment member 50 on the vertical guide 51 of the tilting frame 52.
  • An appropriate control of the adjustment member 50 makes it possible, on the one hand, to maintain a pressure constant grinding and, secondly, to control the vertical movement of the grinding head.
  • the tilting frame 52 is fixed to the supports 55 and 56 by means of axes 53 and 54, which in turn are suspended from inclined bearings 58 through axes 57.
  • the pivoting of the grinding unit around the longitudinal axis of the track is carried out by an adjusting member 59 which is connected to the oscillating frame 52 by a pin 61 and to the support 56 by a pin 60.
  • the grinding unit can first be moved perpendicular to the longitudinal axis of the track in the inclined bearing 58.
  • the inclination of the bearing will be adjusted according to the degree of inclination desired for the grinding disc.
  • the grinding disc can be tilted in a sector ranging from + 20 ° to - 80 °.
  • the oscillating device control makes it possible to position the disc with a tolerance of ⁇ 20 '' and at the same time moves the grinding unit by the same chosen grinding angle.
  • one of the units works in relation to the internal edge of the rail, starting from 80 ° outwards to 20 ° inwards, and the other unit of 20 ° outwards to 80 ° inwards.
  • Such an arrangement makes it possible to reprofile the running surface which normally presents the greatest wear with the two units at the same time.
  • the entire unit can be equipped with horizontal guidance, similar to the guidance of the peripheral disk unit.
  • the superimposition of the horizontal displacement and tilting the grinding units with the cup wheels allows the heart of the points to be ground.
  • Figures 11 and 12 show another embodiment of the carriage A in which the central frame 63 and the tool holders 64 form a rigid unit.
  • the supports 65 of the bogies 6 are linked by tie rods or levers and their spacing is varied as in the oscillating device of FIG. 4.
  • This construction has the disadvantage, however, that during a change of the spacing, the grinding units must be positioned on the axis of the track by means of a linkage or an additional adjusting member.

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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)

Abstract

The carriage has one or more tools for grinding the surfaces of rails and re-shaping their heads, and comprises a central chassis which rests on the rails (10) by means of two tool carriers (4.1) which can turn about a lengthwise axis and are equipped with bogies (6). It also has an oscillating member with bogies (7), and two tool carriers and the bogies (7) are connected by a centering and spacing device, so that when there is a change in the spacing of the bogies (6, 7) the lengthwise axis of the central chassis stays in line with the central axis of the track, and the lengthwise axes of the tool carriers stay parallel to the lengthwise axes of the rails. The central chassis can be made so that it rests on the rails through the tool carrier bogies (6), and is connected to a preceding or following carriage via an articulated joint which lies exactly in line with the axis of the wheels of the preceding/following carriage.

Description

L'invention concerne un chariot équipé d'au moins un outil de meulage ou d'usinage pour le reprofilage de la surface de roulement et du champignon de rails de chemin de fer.The invention relates to a carriage equipped with at least one grinding or machining tool for reprofiling the running surface and the head of railroad tracks.

A cause du trafic ferroviaire, les rails de chemin de fer sont soumis à une usure importante qui produit des ondulations et des stries sur la surface de roulement des rails et en déforme le champignon. Afin de corriger ces déformations, on utilise actuellement des machines de meulage et de planage qui reprofilent l'ensemble du champignon des rails. Ces machines de meulage sont pourvues à cet effet, par exemple, de plusieurs unités de meulage montées dans des chariots de meulage. Ces chariots et les unités de meulage sont ensuite guidés de manière plus ou moins précise par l'une des files de rails ou par les deux files de rails.Due to rail traffic, railway tracks are subject to significant wear which produces ripples and streaks on the running surface of the rails and deforms the fungus. In order to correct these deformations, grinding and leveling machines are currently used which reprofile the entire head of the rails. These grinding machines are provided for this purpose, for example, with several grinding units mounted in grinding carriages. These carriages and the grinding units are then more or less precisely guided by one of the rail lines or by the two rail lines.

Les exigences actuelles concernant la qualité de roulement des trains demandent un reprofilage aussi précis que possible de la surface de roulement et du champignon des rails, et ces exigences sont remplies grâce à un guidage précis des différents outils par rapport à l'axe de la voie.The current requirements regarding the running quality of trains require as precise a reprofiling of the running surface and the head of the rails as possible, and these requirements are met by precise guidance of the different tools relative to the axis of the track. .

Le but de la présente invention est de proposer un chariot de meulage permettant un guidage précis des outils.The object of the present invention is to provide a grinding carriage allowing precise guidance of the tools.

Le chariot selon l'invention est défini par les caractéristiques de la revendication indépendante 1.The carriage according to the invention is defined by the characteristics of independent claim 1.

Les revendications dépendantes 2 à 11 définissent des modes d'exécution particuliers du chariot selon l'invention.The dependent claims 2 to 11 define particular embodiments of the carriage according to the invention.

Les dessins annexés représentent le principe de l'invention et différents modes d'exécution de celle-ci au moyen de deux chariots de meulage comportant plusieurs unités de meulage et des dispositifs de centrage.The accompanying drawings show the principle of the invention and various embodiments thereof by means of two grinding carriages comprising several grinding units and centering devices.

Les figures 1 et 2 montrent une vue de côté et une vue de dessus de deux chariots de meulage accouplés du type A et du type B.Figures 1 and 2 show a side view and a top view of two coupled grinding carriages of type A and type B.

La figure 3 représente les bogies des porte-outils des chariots A et B.Figure 3 shows the bogies of the tool holders of carriages A and B.

Les figures 3.1 et 3.2 représentent deux variantes du dispositif de centrage.Figures 3.1 and 3.2 show two variants of the centering device.

La figure 4 représente le dispositif oscillant du chariot A.Figure 4 shows the oscillating device of the carriage A.

Les figures 5 et 6 représentent des unités de meulage avec des meules périphériques.Figures 5 and 6 show grinding units with peripheral grinding wheels.

La figure 7 est une représentation schématique de la timonerie pour positionner les unités de meulage dans les courbes de la voie.Figure 7 is a schematic representation of the wheelhouse to position the grinding units in the curves of the track.

La figure 8 représente une tête de meulage avec une meule à boisseau.Figure 8 shows a grinding head with a cup wheel.

Les figures 9 et 10 représentent des unités de meulage avec des meules à boisseau.Figures 9 and 10 show grinding units with cup wheels.

Les figures 11 et 12 représentent des chariots de meulage avec un châssis rigide.Figures 11 and 12 show grinding carriages with a rigid frame.

Deux formes d'exécution du chariot de meulage sont décrites en référence aux figures 1 à 4.Two embodiments of the grinding carriage are described with reference to Figures 1 to 4.

Le chariot A est équipé de quatre bogies 6, 7 tandis que le chariot B comportant deux bogies 8 a la forme d'un bissel et est accouplé au chariot A. Ces chariots se composent en particulier des éléments importants suivants:

  • un châssis central 1 et 2 avec les arbres 3,
  • des porte-outils pivotants 4.1, 4.2, 5.1, 5.2 et les bogies 6, 7, 8 et
  • un dispositif de centrage et un dispositif d'écartement pour varier de manière symétrique l'écartement des porte-outils.
The carriage A is equipped with four bogies 6, 7 while the carriage B comprising two bogies 8 has the shape of a bissel and is coupled to the carriage A. These carriages consist in particular of the following important elements:
  • a central chassis 1 and 2 with the shafts 3,
  • swivel tool holders 4.1, 4.2, 5.1, 5.2 and the bogies 6, 7, 8 and
  • a centering device and a spacing device for symmetrically varying the spacing of the tool holders.

Le châssis central 1 du chariot A comporte les bras 1.1 et 1.2 et il est relié de manière pivotante aux porte-outils de gauche 4.1 et de droite et 4.2 au moyen des arbres 3. Les porte-outils 4.1 et 4.2 s'appuient sur les rails 10 par les bogies 6 au travers des axes 9. Ces porte-outils 4.1 et 4.2 forment avec les supports 4.3 et 4.4 une unité rigide. Le châssis central 1 s'appuie par un arbre 11 sur le dispositif oscillant selon la figure 4 et assure ainsi un appui en trois points du chariot au moyen des bogies 7.The central chassis 1 of the carriage A comprises the arms 1.1 and 1.2 and it is pivotally connected to the left tool holders 4.1 and right and 4.2 by means of the shafts 3. The tool holders 4.1 and 4.2 are based on the rails 10 by the bogies 6 through the axes 9. These tool holders 4.1 and 4.2 form with the supports 4.3 and 4.4 a rigid unit. The central chassis 1 is supported by a shaft 11 on the oscillating device according to FIG. 4 and thus provides support at three points of the carriage by means of the bogies 7.

Dans le premier mode d'exécution du dispositif de centrage selon la figure 3, les porte-outils 4.1 et 4.2 sont reliés entre eux par un tirant de raccordement 13 et par un dispositif d'écartement comprenant les cylindres 15 et 16. Le cylindre 15 permet de faire pivoter les bogies 6 l'un vers l'autre afin de faciliter leur enraillement tandis que le cylindre 16 permet de presser les bogies contre les rails de sorte que par le tirant 13, l'axe longitudinal du châssis central 1 se centre sur l'axe longitudinal de la voie indépendamment de tout surécartement de celle-ci.In the first embodiment of the centering device according to Figure 3, the tool holders 4.1 and 4.2 are interconnected by a connecting rod 13 and by a spacer device comprising the cylinders 15 and 16. The cylinder 15 allows the bogies 6 to pivot towards one another in order to facilitate their dragging while the cylinder 16 makes it possible to press the bogies against the rails so that by the tie rod 13, the longitudinal axis of the central chassis 1 is centered on the longitudinal axis of the track independently of any overstepping thereof.

Les positions extrêmes du domaine d'écartement des bogies sont représentées à la figure 4.The extreme positions of the bogie spacing range are shown in Figure 4.

Quand les cylindres 15 et 16 sont bloqués comme représenté dans la figure 3, l'écartement des bogies correspond à un écartement normal de la voie, ce qui permet un passage sans problèmes des aiguillages.When the cylinders 15 and 16 are blocked as shown in FIG. 3, the spacing of the bogies corresponds to a normal spacing of the track, which allows the points to pass without problems.

Le dispositif oscillant représenté à la figure 4 comporte un bras oscillant 17, relié aux supports de gauche 18 et de droite 20 et aux deux bogies 7 par les axes 14. Un tirant 19 et un dispositif d'écartement, comprenant les cylindres 21 et 22, synchronisent l'ouverture ou la fermeture des bogies 7 du dispositif oscillant de la même manière que le tirant 13 et les cylindres 15 et 16 agissent sur les bogies 6 des porte-outils 4.1 et 4.2 représentés à la figure 3.The oscillating device shown in FIG. 4 comprises an oscillating arm 17, connected to the left 18 and right 20 supports and to the two bogies 7 by the pins 14. A tie rod 19 and a spacer device, comprising the cylinders 21 and 22 , synchronize the opening or closing of the bogies 7 of the oscillating device in the same way as the tie rod 13 and the cylinders 15 and 16 act on the bogies 6 of the tool holders 4.1 and 4.2 shown in FIG. 3.

Dans le deuxième mode d'exécution du dispositif de centrage selon la figure 3.1, le centrage du chariot de meulage sur la voie est réalisé au moyen des deux leviers 66 et 67, chacun d'entre eux formant une unité rigide avec les porte-outils 4.1 et 4.2, et les leviers 66 et 67 étant reliés entre eux au moyen du palier à glissement 68 et de l'axe 69. L'écartement des porte-outils peut être modifié soit par les cylindres 15 et 16, soit par le cylindre à double course 70 qui est fixé au châssis central 1 et aux deux leviers 66 et 67.In the second embodiment of the centering device according to Figure 3.1, the centering of the grinding carriage on the track is achieved by means of the two levers 66 and 67, each of them forming a rigid unit with the tool holders 4.1 and 4.2, and the levers 66 and 67 being interconnected by means of the sliding bearing 68 and the axis 69. The spacing tool holders can be modified either by the cylinders 15 and 16, or by the double-stroke cylinder 70 which is fixed to the central chassis 1 and to the two levers 66 and 67.

Le troisième mode d'exécution du dispositif de centrage est représenté à la figure 3.2. Dans celui-ci, l'axe longitudinal du chariot de meulage est centré sur l'axe longitudinal de la voie au moyen des tirants 71 et 72 qui sont liés d'un côté aux porte-outils 4.1, 4.2 et de l'autre côté à un levier intermédiaire 73. Ce levier intermédiaire 73 est monté pivotant sur le châssis central 1 au moyen d'un axe 74. Une modification de l'écartement des porte-outils 4.1 et 4.2 est produite soit par les cylindres 15 et 16, soit par le cylindre à double course 75.The third embodiment of the centering device is shown in Figure 3.2. In this, the longitudinal axis of the grinding carriage is centered on the longitudinal axis of the track by means of tie rods 71 and 72 which are connected on one side to the tool holders 4.1, 4.2 and on the other side to an intermediate lever 73. This intermediate lever 73 is pivotally mounted on the central chassis 1 by means of an axis 74. A modification of the spacing of the tool holders 4.1 and 4.2 is produced either by the cylinders 15 and 16, or by the double stroke cylinder 75.

L'axe longitudinal du chariot n'est effectivement centré de manière précise sur l'axe longitudinal de la voie que dans ce troisième mode d'exécution. L'erreur théorique qui apparaît dans le premier et dans le deuxième mode d'exécution est d'environ 0,01 à 0,03 mm, en fonction des rapports entre les différents tirants et leviers, ce qui en pratique peut être négligé.The longitudinal axis of the carriage is effectively centered precisely on the longitudinal axis of the track only in this third embodiment. The theoretical error which appears in the first and in the second embodiment is approximately 0.01 to 0.03 mm, depending on the relationships between the different tie rods and levers, which in practice can be overlooked.

Bien entendu, le dispositif oscillant peut lui aussi être pourvu d'un dispositif de centrage selon l'un ou l'autre des différents modes d'exécution décrits de celui-ci.Of course, the oscillating device can also be provided with a centering device according to one or the other of the various embodiments described thereof.

Le chariot de meulage A est construit pour des unités de meulage à meules périphériques et les porte-outils 4.1, 4.2 comportent à cet effet des supports transversaux formés par les paliers vissés 29 et les arbres 28. Afin d'empêcher que les petites ondulations et les stries ne soient reproduites ou copiées par les meules périphériques, les bogies 6 et 7 ont la forme de patins et comportent des roues à boudins 23 et des roues d'appui 24. Les bogies sont liés de manière oscillante au chariot au moyen des axes 9.The grinding carriage A is constructed for grinding units with peripheral wheels and the tool holders 4.1, 4.2 comprise for this purpose transverse supports formed by the screwed bearings 29 and the shafts 28. In order to prevent small undulations and the ridges are not reproduced or copied by the peripheral grinding wheels, the bogies 6 and 7 have the shape of skids and include flanged wheels 23 and support wheels 24. The bogies are linked in an oscillating manner to the carriage by means of the axes 9.

Les unités de meulages, comportant les meules périphériques selon les figures 5 et 6, comprennent en outre une tête de meulage 26 et un cadre 27, qui est fixé de manière mobile aux guidages 28. La tête de meulage comprend un disque de meulage 30, une broche 31, un moteur électrique 32 qui entraîne le disque de meulage 30 au moyen d'une courroie 33 et un galet tendeur 25. La broche 31 et le support du moteur électrique 32 forment une unité rigide qui est guidée verticalement par les guidages verticaux 35 du cadre 27. Le disque de meulage 30 peut être déplacé vers le haut ou vers le bas au moyen d'un cylindre d'ajustement 36. Une servocommande appropriée permet en outre de maintenir une pression de meulage constante et un calculateur positionne et commande le cylindre d'ajustement 36 en fonction des ondulations à meuler au moyen d'un capteur de déplacement.The grinding units, comprising the peripheral grinding wheels according to FIGS. 5 and 6, further comprise a grinding head 26 and a frame 27, which is movably fixed to the guides 28. The grinding head comprises a grinding disc 30, a spindle 31, an electric motor 32 which drives the grinding disc 30 by means of a belt 33 and a tension roller 25. The spindle 31 and the support of the electric motor 32 form a rigid unit which is guided vertically by the vertical guides 35 of the frame 27. The grinding disc 30 can be moved up or down by means of an adjustment cylinder 36. A suitable servo control also makes it possible to maintain a constant grinding pressure and a computer positions and controls the adjustment cylinder 36 as a function of the corrugations to be ground by means of a displacement sensor.

Le cadre mobile 27, par les tiges réglables 44, permet d'une part de placer le disque de meulage 30 dans la position désirée par rapport à l'axe du rail 10, de manière à ce que le champignon de celui-ci puisse être meulé selon les directions e et f représentées à la figure 5 et d'autre part de guider la tête de meulage en suivant précisément la géométrie de la voie au moyen d'une timonerie, qui elle-même est commandée par le chariot précédent ou le chariot suivant.The movable frame 27, by the adjustable rods 44, allows on the one hand to place the grinding disc 30 in the desired position relative to the axis of the rail 10, so that the mushroom thereof can be ground in the directions e and f shown in Figure 5 and on the other hand to guide the grinding head precisely following the geometry of the track by means of a wheelhouse, which itself is controlled by the previous carriage or the next cart.

A cet effet, deux articulations 38 se trouvent sur le bras 2.1 du chariot de meulage B, figure 2, articulations qui sont exactement dans l'axe longitudinal des bogies 6 et qui sont reliées aux unités de meulage par les tringles 39, 40 et 41, les leviers 42 et 43 et les barres de longueur réglable 44. Les rapports de démultiplication entre les leviers 42 et 43 sont fixés en fonction des distances a et b entre les axes des chariots et des distances c et d des unités de meulage.To this end, two joints 38 are located on the arm 2.1 of the grinding carriage B, FIG. 2, joints which are exactly in the longitudinal axis of the bogies 6 and which are connected to the grinding units by the rods 39, 40 and 41 , the levers 42 and 43 and the adjustable length bars 44. The reduction ratios between the levers 42 and 43 are fixed as a function of the distances a and b between the axes of the carriages and the distances c and d of the grinding units.

La figure 7 représente de manière schématique les chariots A et B dans une courbe de la voie et les déplacements h1 et h2 des unités de meulage qui correspondent aux flèches f1 et f2, en fonction de l'angle α et du rapport de démultiplication des leviers.FIG. 7 schematically represents the carriages A and B in a curve of the track and the displacements h1 and h2 of the grinding units which correspond to the arrows f1 and f2, as a function of the angle α and of the gear reduction ratio .

Le chariot B est construit de manière similaire au chariot A. Le châssis central 2 comporte des bras 2.1, 2.2 et est relié par les arbres 3 aux porte-outils oscillants 5.1 et 5.2, qui s'appuient quant à eux sur les rails 10 par les bogies 8. Le centrage de l'axe longitudinal du châssis central 2 sur l'axe longitudinal de la voie et celui de l'axe des outils par rapport à l'axe longitudinal de chaque rail est réalisé de la même manière que sur le chariot A, c'est-à-dire par un dispositif de centrage et d'écartement tel que représenté dans les figures 3, 3.1 et 3.2, et si nécessaire par une timonerie 39, 40, 41, 43 et 44 comme celle représentée dans la figure 2.The carriage B is constructed in a similar manner to the carriage A. The central chassis 2 comprises arms 2.1, 2.2 and is connected by the shafts 3 to the oscillating tool holders 5.1 and 5.2, which in turn are supported on the rails 10 by the bogies 8. The centering of the longitudinal axis of the central chassis 2 on the longitudinal axis of the track and that of the axis of the tools relative to the longitudinal axis of each rail is carried out in the same way as on the carriage A, i.e. by a centering and spacing device as shown in Figures 3, 3.1 and 3.2, and if necessary by a wheelhouse 39, 40, 41, 43 and 44 like that shown in Figure 2.

A la place d'un dispositif oscillant, le châssis 2 est relié au châssis du chariot A par un arbre 37 au travers d'une articulation qui se trouve exactement dans l'axe des roues à boudin des bogies 6. Le chariot B est quant à lui prévu pour des unités de meulage à meules à boisseau et les porte-outils 5.1, 5.2 comportent des paliers inclinés 58 et un organe de réglage 62. Les meules à boisseau ne reproduisant pas les stries et les ondulations, celles-ci étant plus petites que le diamètre des meules, le chariot ne comporte que des roues à boudin 8 normales.Instead of an oscillating device, the chassis 2 is connected to the chassis of the carriage A by a shaft 37 through an articulation which is exactly in the axis of the flanged wheels of the bogies 6. The carriage B is it is intended for grinding units with cup wheels and the tool holders 5.1, 5.2 have inclined bearings 58 and an adjusting member 62. The cup wheels do not reproduce the ridges and undulations, these being more small than the diameter of the grinding wheels, the carriage only has normal flanged wheels 8.

L'unité de meulage avec les meules à boisseau représentée à la figure 9 comporte une tête de meulage telle que représentée à la figure 8 et un cadre oscillant tel que représenté à la figure 10. La tête de meulage comprend un disque de meulage 46, un palier 47 et un tube de guidage 48 et forme un ensemble rigide sur lequel un moteur électrique est vissé. Le disque de meulage 46 est entraîné directement par le moteur à travers un embrayage. La tête de meulage est déplacée et positionnée en hauteur au moyen d'un organe de réglage 50 sur le guidage vertical 51 du cadre basculant 52. Une commande appropriée de l'organe de réglage 50 permet, d'une part, de maintenir une pression de meulage constante et, d'autre part, de contrôler le déplacement vertical de la tête de meulage. Le cadre basculant 52 est fixé aux supports 55 et 56 au moyen des axes 53 et 54, qui de leur côté sont suspendus aux paliers inclinés 58 au travers des axes 57.The grinding unit with the cup wheels shown in FIG. 9 comprises a grinding head as shown in FIG. 8 and an oscillating frame as shown in FIG. 10. The grinding head comprises a grinding disc 46, a bearing 47 and a guide tube 48 and forms a rigid assembly on which an electric motor is screwed. The grinding disc 46 is driven directly by the engine through a clutch. The grinding head is moved and positioned in height by means of an adjustment member 50 on the vertical guide 51 of the tilting frame 52. An appropriate control of the adjustment member 50 makes it possible, on the one hand, to maintain a pressure constant grinding and, secondly, to control the vertical movement of the grinding head. The tilting frame 52 is fixed to the supports 55 and 56 by means of axes 53 and 54, which in turn are suspended from inclined bearings 58 through axes 57.

Le pivotement de l'unité de meulage autour de l'axe longitudinal de la voie est réalisé par un organe de réglage 59 qui est relié au cadre oscillant 52 par un axe 61 et au support 56 par un axe 60. L'unité de meulage peut d'abord être déplacée perpendiculairement à l'axe longitudinal de la voie dans le palier incliné 58. L'inclinaison du palier sera réglée en fonction du degré d'inclinaison désiré pour le disque de meulage. Dans la réalisation représentée, le disque de meulage peut être incliné dans un secteur allant de +20° à - 80°. La commande du dispositif oscillant permet de positionner le disque avec une tolérance de ± 20'' et déplace en même temps l'unité de meulage du même angle de meulage choisi.The pivoting of the grinding unit around the longitudinal axis of the track is carried out by an adjusting member 59 which is connected to the oscillating frame 52 by a pin 61 and to the support 56 by a pin 60. The grinding unit can first be moved perpendicular to the longitudinal axis of the track in the inclined bearing 58. The inclination of the bearing will be adjusted according to the degree of inclination desired for the grinding disc. In the embodiment shown, the grinding disc can be tilted in a sector ranging from + 20 ° to - 80 °. The oscillating device control makes it possible to position the disc with a tolerance of ± 20 '' and at the same time moves the grinding unit by the same chosen grinding angle.

De manière à pouvoir meuler entièrement le champignon du rail, l'une des unités travaille par rapport au bord intérieur du rail en partant de 80° vers l'extérieur jusqu'à 20° vers l'intérieur, et l'autre unité de 20° vers l'extérieur jusqu'à 80° vers l'intérieur. Un tel arrangement permet de reprofiler la surface de roulement qui présente normalement l'usure la plus importante avec les deux unités en même temps.In order to be able to fully grind the rail head, one of the units works in relation to the internal edge of the rail, starting from 80 ° outwards to 20 ° inwards, and the other unit of 20 ° outwards to 80 ° inwards. Such an arrangement makes it possible to reprofile the running surface which normally presents the greatest wear with the two units at the same time.

En plus d'un guidage en inclinaison, l'unité entière peut être équipée d'un guidage horizontal, semblable au guidage de l'unité à disques périphériques. La superposition du déplacement horizontal et en inclinaison des unités de meulage avec les meules à boisseau permet de meuler le coeur des aiguillages.In addition to tilting guidance, the entire unit can be equipped with horizontal guidance, similar to the guidance of the peripheral disk unit. The superimposition of the horizontal displacement and tilting the grinding units with the cup wheels allows the heart of the points to be ground.

Afin que les unités de meulage forment un ensemble aussi rigide et exempt de vibrations avec les chariots pendant le travail, elles sont mise sous contrainte avec le porte-outils et contre le support 55 par des cylindres de tension 45 au travers du support 56.So that the grinding units form such a rigid and vibration-free assembly with the carriages during work, they are stressed with the tool holder and against the support 55 by tension cylinders 45 through the support 56.

Les figures 11 et 12 montrent une autre forme d'exécution du chariot A dans laquelle le châssis central 63 et les porte-outils 64 forment une unité rigide. Pour le centrage du chariot sur la voie, les supports 65 des bogies 6 sont liés par des tirants ou des leviers et leur écartement est varié comme dans le dispositif oscillant de la figure 4. Cette construction présente toutefois le désavantage que, lors d'un changement de l'écartement, les unités de meulage doivent être positionnées sur l'axe de la voie au moyen d'une tringlerie ou d'un organe de réglage supplémentaire.Figures 11 and 12 show another embodiment of the carriage A in which the central frame 63 and the tool holders 64 form a rigid unit. For centering the carriage on the track, the supports 65 of the bogies 6 are linked by tie rods or levers and their spacing is varied as in the oscillating device of FIG. 4. This construction has the disadvantage, however, that during a change of the spacing, the grinding units must be positioned on the axis of the track by means of a linkage or an additional adjusting member.

Les différents modes d'exécution de l'invention sont décrits à titre d'exemple et des variations sont possibles dans le cadre de la protection revendiquée.The various embodiments of the invention are described by way of example and variations are possible within the scope of the protection claimed.

Claims (11)

Chariot comprenant au moins un outil de meulage ou d'usinage pour reprofiler la surface de roulement et le champignon de rails de chemin de fer, caractérisé en ce que le chariot comprend un châssis central (1), qui s'appuie sur les rails (10) d'une part au travers de deux porte-outils (4.1,4.2) pouvant tourner autour d'un axe longitudinal et ayant chacun un bogie (6), et d'autre part au travers d'un dispositif oscillant (17, 18, 19, 20, 21, 22) comportant des bogies (7) tournant autour d'axes longitudinaux (14), en ce que les deux porte-outils (4.1,4.2) et les bogies (7) du dispositif oscillant sont liés chacun entre eux par un dispositif de centrage et d'écartement de telle manière que lors d'un changement de l'écartement des bogies (6, 7), l'axe longitudinal du châssis central (1) est centré sur l'axe longitudinal de la voie et les axes longitudinaux des porte-outils (4.1,4.2) restent parallèles à l'axe longitudinal des rails (10).Trolley comprising at least one grinding or machining tool for reprofiling the running surface and the head of rail tracks, characterized in that the trolley comprises a central chassis (1), which rests on the rails ( 10) on the one hand through two tool holders (4.1,4.2) which can rotate around a longitudinal axis and each having a bogie (6), and on the other hand through an oscillating device (17, 18, 19, 20, 21, 22) comprising bogies (7) rotating around longitudinal axes (14), in that the two tool holders (4.1,4.2) and the bogies (7) of the oscillating device are linked each between them by a centering and spacing device so that when the spacing of the bogies (6, 7) is changed, the longitudinal axis of the central chassis (1) is centered on the longitudinal axis of the track and the longitudinal axes of the tool holders (4.1,4.2) remain parallel to the longitudinal axis of the rails (10). Chariot selon la revendication 1, caractérisé en ce que le châssis central d'une part s'appuie sur les rails au travers des bogies (6) des porte-outils (4.1,4.2) et d'autre part est attaché au chariot le précédent ou le suivant par une articulation qui se trouve exactement dans l'axe des roues du chariot précédent ou du chariot suivant.Trolley according to claim 1, characterized in that the central chassis on the one hand rests on the rails through the bogies (6) of the tool holders (4.1,4.2) and on the other hand is attached to the trolley the previous or the next by an articulation which is exactly in the axis of the wheels of the previous carriage or the following carriage. Chariot selon les revendications 1 et 2, caractérisé en ce que l'axe longitudinal du châssis central (1) est centré sur l'axe longitudinal de la voie par un tirant de raccordement (13) reliant les deux porte-outils (4.1,4.2).Trolley according to Claims 1 and 2, characterized in that the longitudinal axis of the central chassis (1) is centered on the longitudinal axis of the track by a tie rod connection (13) connecting the two tool holders (4.1,4.2). Chariot selon les revendications 1 et 2, caractérisé en ce que l'axe longitudinal du châssis central (1) est centré sur l'axe longitudinal de la voie par deux leviers (66,67), fixés de manière rigide aux porte-outils (4.1,4.2) et liés entre eux par un palier à glissement (68) et un axe (69).Trolley according to Claims 1 and 2, characterized in that the longitudinal axis of the central chassis (1) is centered on the longitudinal axis of the track by two levers (66,67), rigidly fixed to the tool holders ( 4.1,4.2) and linked together by a sliding bearing (68) and an axis (69). Chariot selon les revendications 1 et 2 caractérisé en ce que l'axe longitudinal du châssis central (1) est centré sur l'axe longitudinal de la voie par deux tirants (71,72), chacun des tirants étant d'un côté relié à l'un des porte-outils (4.1,4.2) et de l'autre à un levier intermédiaire (73), lui-même fixé au châssis central (1) par un axe (74).Trolley according to claims 1 and 2 characterized in that the longitudinal axis of the central chassis (1) is centered on the longitudinal axis of the track by two tie rods (71,72), each of the tie rods being on one side connected to one of the tool holders (4.1,4.2) and the other to an intermediate lever (73), itself fixed to the central chassis (1) by a pin (74). Chariot selon les revendications 1 et 2 caractérisé en ce que le dispositif d'écartement assurant le pivotement des bogies (6,7) comporte au minimum les trois positions suivantes: - fermée pour l'enraillement des chariots, - écartement normal et - ouverte en fonction du surécartement des voies. Trolley according to claims 1 and 2 characterized in that the spacer device ensuring the pivoting of the bogies (6,7) has at least the following three positions: - closed for the carriage racking, - normal spacing and - open depending on the gauge of the tracks. Chariot selon les revendications 1 et 2 caractérisé en ce que les outils sont fixés aux porte-outils (4.1,4.2) de manière mobile autour d'un axe horizontal perpendiculaire à l'axe longitudinal de la voie.Trolley according to claims 1 and 2 characterized in that the tools are fixed to the tool holders (4.1,4.2) in a mobile manner around a horizontal axis perpendicular to the longitudinal axis of the track. Chariot selon les revendications 1 et 2 caractérisé en ce que les outils sont fixés aux porte-outils (4.1,4.2) de manière mobile autour d'un axe incliné et perpendiculaire à l'axe longitudinal de la voie.Trolley according to claims 1 and 2 characterized in that the tools are fixed to the tool holders (4.1,4.2) movably around an inclined axis and perpendicular to the longitudinal axis of the track. Chariot selon les revendications 1 et 2 caractérisé en ce que les outils sont fixés aux porte-outils (4.1,4.2) mobiles autour d'un arbre horizontal, incliné et perpendiculaire à l'axe longitudinal de la voie.Trolley according to claims 1 and 2 characterized in that the tools are fixed to the tool holders (4.1,4.2) movable around a horizontal shaft, inclined and perpendicular to the longitudinal axis of the track. Chariot selon les revendications 1, 2, 7, 8 et 9 caractérisé en ce que les outils peuvent être déplacés par rapport aux porte-outils (4.1,4.2) perpendiculairement à l'axe de la voie par l'intermédiaire d'une timonerie (39,40,41) et de leviers (42,43,44), qui sont fixés au chariot précédent ou au chariot suivant, et centrés précisément sur l'axe de la voie.Trolley according to claims 1, 2, 7, 8 and 9 characterized in that the tools can be moved relative to the tool holders (4.1,4.2) perpendicular to the axis of the track by means of a wheelhouse ( 39,40,41) and levers (42,43,44), which are fixed to the preceding carriage or to the following carriage, and centered precisely on the axis of the track. Chariot selon les revendications 1 et 2 caractérisé en ce que, pendant le travail, les outils sont bloqués entre eux et par rapport aux porte-outils (4.1,4.2) par des cylindres de tension.Trolley according to claims 1 and 2 characterized in that, during work, the tools are locked together and relative to the tool holders (4.1,4.2) by tension cylinders.
EP97810057A 1996-02-06 1997-02-04 Carriage provided with grinding or machining tools for the rolling surface and the mushroom portion of railway rails Withdrawn EP0789108A1 (en)

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CH299/96 1996-02-06
CH29996 1996-02-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013086547A1 (en) * 2011-12-12 2013-06-20 MASCHINENFABRIK LIEZEN UND GIESSEREI GesmbH Device for rail machining using controlled tracking of the machining tools
US20170096782A1 (en) * 2014-06-24 2017-04-06 Fama S.R.L. Tangential grinding machine for railway profiles
CN111501443A (en) * 2020-03-19 2020-08-07 湖南大学 Steel rail grinding device

Citations (4)

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Publication number Priority date Publication date Assignee Title
EP0304960A1 (en) * 1987-08-31 1989-03-01 Loram Maintenance Of Way, Inc. Rail grinding machine
US4951424A (en) * 1988-05-30 1990-08-28 Les Fils D'auguste Scheuchzer S.A. Machine for the grinding of rails
EP0524661A1 (en) * 1987-10-16 1993-01-27 Loram Maintenance Of Way, Inc. Rail grinding machine
US5191841A (en) * 1992-02-18 1993-03-09 Harsco Corporation Railroad bogie and rail grinder using the bogie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0304960A1 (en) * 1987-08-31 1989-03-01 Loram Maintenance Of Way, Inc. Rail grinding machine
EP0524661A1 (en) * 1987-10-16 1993-01-27 Loram Maintenance Of Way, Inc. Rail grinding machine
US4951424A (en) * 1988-05-30 1990-08-28 Les Fils D'auguste Scheuchzer S.A. Machine for the grinding of rails
US5191841A (en) * 1992-02-18 1993-03-09 Harsco Corporation Railroad bogie and rail grinder using the bogie

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013086547A1 (en) * 2011-12-12 2013-06-20 MASCHINENFABRIK LIEZEN UND GIESSEREI GesmbH Device for rail machining using controlled tracking of the machining tools
US20170096782A1 (en) * 2014-06-24 2017-04-06 Fama S.R.L. Tangential grinding machine for railway profiles
US9732476B2 (en) * 2014-06-24 2017-08-15 Fama S.R.L. Tangential grinding machine for railway profiles
CN111501443A (en) * 2020-03-19 2020-08-07 湖南大学 Steel rail grinding device
CN111501443B (en) * 2020-03-19 2022-01-28 湖南大学 Steel rail grinding device

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