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EP0044964B1 - Grinding machine for rectifying a rail of a railroad track - Google Patents

Grinding machine for rectifying a rail of a railroad track Download PDF

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Publication number
EP0044964B1
EP0044964B1 EP81105139A EP81105139A EP0044964B1 EP 0044964 B1 EP0044964 B1 EP 0044964B1 EP 81105139 A EP81105139 A EP 81105139A EP 81105139 A EP81105139 A EP 81105139A EP 0044964 B1 EP0044964 B1 EP 0044964B1
Authority
EP
European Patent Office
Prior art keywords
grinding wheel
grinding
rail
fact
carriage
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.)
Expired
Application number
EP81105139A
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German (de)
French (fr)
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EP0044964A1 (en
Inventor
Romolo Panetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Speno International SA
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Speno International SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Speno International SA filed Critical Speno International SA
Priority to AT81105139T priority Critical patent/ATE6278T1/en
Publication of EP0044964A1 publication Critical patent/EP0044964A1/en
Application granted granted Critical
Publication of EP0044964B1 publication Critical patent/EP0044964B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • 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 present invention relates to a grinding device for the reshaping in the track of a rail of a railroad track comprising at least one rotary grinding wheel, driven by a motor in accordance with the preamble of the main claim.
  • a grinding device for the reshaping in the track of a rail of a railroad track comprising at least one rotary grinding wheel, driven by a motor in accordance with the preamble of the main claim.
  • One or more of these devices are mounted one behind the other on a guide carriage of a vehicle moving along the track, means being provided for orienting the grinding wheels relative to the rail, in particular to the head of the rail. , and to apply the grindstones against the rail for re-profiling when moving the vehicle along the track.
  • the grinding device according to the invention as characterized in claim 1, provides a solution making it possible to avoid the aforementioned drawbacks.
  • This grinding device comprises a grinding wheel 1, the peripheral surface of which has the form of a non-cylindrical surface of revolution, here a concave surface of revolution.
  • This bell wheel 1 is fixed on an axis 2 of an electric drive motor 3.
  • the carcass of the motor 3 comprises an extension 3a pivoted on a support 8 fixed in a known manner to a guide carriage of a railway vehicle (not illustrated) but which may be of the type of carriages 6, 7 of the device described in patent DE- B-2.701.216).
  • a jack 5 is articulated on the support 8 on the one hand and on the other hand, by the rod 6a of its piston on an ear 3b of the carcass of the motor 3.
  • the grinding wheel is in contact with the rail 12 by its front planar face and its advance travel, compensating for its wear and defining its cutting depth, takes place in an arc under the effect of the jack 5.
  • This direction d advance is substantially parallel to the generator g of the grinding wheel in the vicinity of its point of contact with the rail 12, that is to say that it forms with the axis of rotation of the grinding wheel 1 an angle equal to the half the angle at the apex formed by the tangents to the generatrices of the grinding wheel 1.
  • the area of congestion of the grinding wheel, in the vicinity of the rail, defined by its front face and its generatrix g is always the same as it is let the grinding wheel advance. Thanks to this arrangement, this grinding wheel can never come into contact with obstacles, counter-rail, signaling boxes, etc., located along the track near the rail to be reprofiled.
  • the peripheral surface of the grinding wheel has a generator in an arc of a circle and the advance movement of the grinding wheel takes place along a radius R which is substantially identical.
  • the peripheral surface of the grinding wheel may have curvilinear, non-circular generators, in this case the means for advancing the grinding wheel must be designed to move the latter substantially parallel to its generator in the vicinity of the point of contact with the rail.
  • peripheral surface of revolution of the grinding wheel could be convex.
  • the grinding wheel is conical, its peripheral surface of revolution being a truncated cone, which makes it possible to provide a rectilinear advance travel of the grinding wheel, substantially parallel to its generatrix. in the vicinity of the point of contact with the rail.
  • the grinding device comprises a conical bell or lapidary wheel 1, that is to say the peripheral surface of which is constituted by a truncated cone.
  • This conical grinding wheel 1 is fixed to the axis 2 of an electric drive motor 3.
  • the active working surface of the grinding wheel is flat and perpendicular to the axis of symmetry and rotation of the grinding wheel 1.
  • the drive motor 3 is rigidly fixed to a gusset 4 secured to the chamber 5 of a double-acting cylinder whose piston 6 is secured to a guide column 7 passing right through the chamber 5.
  • This column guide 7 is secured to a support 8 fixed with bolts 9 to a carriage 10 of a railway vehicle. Due to the lights 11 1 of the support 8 it can be fixed on the carriage 10 according to several orientations so as to vary the position of the grinding wheel 1 relative to the rail 12 depending on the part of the head of the rail that is desired reprofile.
  • the guide column 7 is provided with conduits 13, 14 opening on one side and the other of the piston 6 in the chamber 5 of the hydraulic or pneumatic cylinder.
  • the angle rp between the axis of the jack causing the grinding wheel 1 to move in advance, displacement defining the depth of cut and compensating for l 'wear of the grinding wheel, and the axis of rotation of the grinding wheel 1 is of the order of 30 °. This angle can be chosen within very wide limits depending on the portion of the rail to be reprofiled.
  • this angle rp is substantially equal to half the angle at the apex ⁇ of the conical grinding wheel 1, so that the direction of advance of the grinding wheel 1 towards the rail 12 is substantially parallel to the external generator. of the grinding wheel in the vicinity of its contact point with the rail.
  • the grinding device is positioned relative to the track in such a way that a counter rail, a signaling box or any other obstacle located along the track is outside the zone in which the grinding wheel moves during the advance of the vehicle along the track.
  • the axis of rotation of the grinding wheel 1 forms an angle rp with the direction of advance of this grinding wheel defined by the axis of the jack.
  • the front working surface of the grinding wheel 1 is of frustoconical shape and intersects the peripheral surface of the grinding wheel, also frustoconical, approximately at right angles.
  • This arrangement is particularly advantageous for reprofiling the upper running surface of the rail 12. It is seen that thanks to this arrangement this upper running surface of the rail can be reprofiled even at level crossings where the rail 12 is practically buried in the roadway.
  • the angle (p included between the axis of rotation of the grinding wheel 1 and the direction of advance thereof, that is to say the axis of the jack is substantially equal to half the angle at the apex ⁇ of the tapered grinding wheel 1 and the advancement of the grinding wheel takes place substantially parallel to its generator in the vicinity of its point of contact with the rail.
  • the support 8 can in this embodiment be mounted on the carriage as illustrated for example in Figure 1. Thus, it is possible to tilt the grinding wheel relative to the rail to be reprofiled according to the portion of the rolling table to be reprofiled.
  • Figure 4 illustrates an embodiment of the grinding device used for reprofiling the lateral face of the rail head.
  • the conical wheel 1 is rotated by the motor 3 along a horizontal axis.
  • the gusset 4 secured to the motor 3 slides on two solid bars 15 of the support 8.
  • a lug of the gusset 4 is articulated on the rod 16 of a double-acting cylinder 17 controlling the advance travel of the grinding wheel 1.
  • the direction of advance of the grinding wheel 1, parallel to the rods 15, forms an angle ⁇ with the axis of rotation of the grinding wheel 1 and is substantially parallel to the generator of the grinding wheel in the vicinity of its point of contact with the rail.
  • This angle has been chosen here substantially equal to 45 ° and the angle at the top of the grinding wheel 1 is approximately equal to 90 °.
  • the support 8 can be moved angularly relative to the tool carriage 10 to allow grinding different portions of the surface of the rail head.
  • This movement is a rotation around an axis parallel to the rail, in the examples illustrated around a fictitious axis located inside the rail, more precisely the head of the rail.
  • This movement does not modify the angle ⁇ between the direction of advance of the grinding wheel and its axis of rotation but allows the direction in which the grinding wheel is moved relative to the rail to be adjusted.
  • FIG. 7 illustrates a railway vehicle for reprofiling the rails of a railway track provided with two tool-carrying carriages 18, 19, rolling on the rail using flanged wheels 20, connected to the chassis of the vehicle on the one hand by drive links 21, 22 of the carriage along the rail and on the other hand by articulated links comprising jacks 23, 24 making it possible to move the carriage vertically relative to the chassis of the vehicle and also allowing d 'apply the carriages against the rail 12 with a determined force.
  • each carriage carries two grinding each having two working units formed by a drive motor 25 and a conical grinding wheel 26.
  • the two working units of the same grinding device are rigidly connected together by a support 27.
  • levers forming a deformable parallelogram The connection of this support 27 to the carriage 18 is carried out using levers forming a deformable parallelogram.
  • Two parallel levers 28, 29 are pivoted at one of their ends on the carriage at 30, 31 respectively.
  • the free end of the lever 28 is pivoted at 32 on one of the ends of a connecting rod 33 the other end of which is pivoted on the support 27.
  • the free end of the lever 29 is pivoted at 34 on the connecting rod 33.
  • the distances between the pivot points 30, 31 and 32, 34 as well as the pivot points 30, 32 and 31, 34 are respectively equal so as to form a deformable parallelogram.
  • the connecting rod 33 extends vertically like the line connecting the pivot points 30 and 31.
  • the end of the lever 28 pivoted on the carriage comprises an ear 35 articulated on the casing of a double-acting cylinder 36 whose rod 37, integral with the piston, is pivoted on an ear 38 which has the end of the pivoted lever 29 on the connecting rod 33.
  • the axis of rotation of the grinding wheels 26 is not confused with the direction of advance of these grinding wheels, controlled by the connecting rod 33, but forms an angle q J with respect to this direction.
  • This angle q J can be adjusted by modifying the angular position of each working unit relative to the support 27.
  • the entire parallelogram device described above can be pivoted around axes 39 in order to be able to orient the advance movement of the grinding wheels as a function of the area of the rail profile to be ground.
  • FIG. 6 is a partial and schematic view along the line VV of Figure 5.
  • each motor unit 25 - grinding wheel 26 is adjusted with another inclination relative to the rail so as to reprofile different portions of the surface of the head of the rail.
  • the pivoting which the motor unit 25 - grinding wheel 26 can carry out relative to the support 27 is preferably carried out in an arc centered on a fictitious axis parallel to the rail 12, that is to say in the direction of movement of the vehicle, this fictitious axis being located in the rail.
  • the units can be inclined either inside the track with an angle cp, or outside the track with the angle rp 'without interfering with the obstacles located along the way.
  • the grinding wheel takes an inclined position and its lower peripheral part is in contact with the rail.
  • Most of the grinding wheel is located above the rail outside the area occupied by obstacles.

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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)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

A grinding device for the reprofiling of a rail of a railway track, comprises at least one grinding unit having a conical grinding wheel rotatably driven by a motor. The motor is secured to a bracket connecting it rigidly to the chamber of a jack whose piston is secured to a rod fixed on the carriage of a railroad vehicle. The jack makes it possible to cause feeding movement of the grinding wheel along a direction parallel to the side profile of the grinding wheel and defining the cutting depth and compensating for wearing away of the grinding wheel. This feeding movement of the grinding wheel takes place along a direction forming an angle with the axis of rotation of the conical grinding wheel, this angle being about half the summit angle of the conical grinding wheel.

Description

La présente invention concerne un dispositif de meulage pour le reprofilage en voie d'un rail d'une voie ferrée comportant au moins une meule rotative, entraînée par un moteur conformément au préambule de la revendication principale. Un ou plusieurs de ces dispositifs sont montés l'un derrière l'autre sur un chariot de guidage d'un véhicule se déplaçant le long de la voie, des moyens étant prévus pour orienter les meules par rapport au rail, notamment au champignon du rail, et pour appliquer les meules contre le rail en vue de son reprofilage lors du déplacement du véhicule le long de la voie.The present invention relates to a grinding device for the reshaping in the track of a rail of a railroad track comprising at least one rotary grinding wheel, driven by a motor in accordance with the preamble of the main claim. One or more of these devices are mounted one behind the other on a guide carriage of a vehicle moving along the track, means being provided for orienting the grinding wheels relative to the rail, in particular to the head of the rail. , and to apply the grindstones against the rail for re-profiling when moving the vehicle along the track.

On connaît un certain nombre de tels dispositifs de meulage pour reprofiler les rails de chemin de fer qui peuvent se regrouper en trois catégories principales:

  • 1. Les dispositifs de meulage utilisant des meules lapidaires, soit des meules cloches à paroi cylindrique, travaillant par leur surface annulaire frontale. De telles meules sont utilisées par exemple sur le dispositif de meulage décrit dans le brevet CH-A-583.337.
A number of such grinding devices are known for reprofiling railway rails which can be grouped into three main categories:
  • 1. Grinding devices using lapidary grinding wheels, that is, bell-shaped grinding wheels with a cylindrical wall, working through their frontal annular surface. Such grinding wheels are used for example on the grinding device described in patent CH-A-583,337.

Ces dispositifs présentent l'inconvénient majeur d'un grand encombrement latéral de part et d'autre du rail, encombrement égal au diamètre de la meule. Cet encombrement est tel dans les réalisations existantes qu'il est incompatible avec les obstacles normalement rencontrés le long d'une voie comme les passages à niveau, contre-rails, compteurs d'essieux ou boîtes de signalisation.These devices have the major drawback of large lateral dimensions on either side of the rail, dimensions equal to the diameter of the grinding wheel. This size is such in existing embodiments that it is incompatible with the obstacles normally encountered along a track such as level crossings, counter-rails, axle counters or signaling boxes.

Lors du reprofilage des rails d'une voie à l'aide de tels dispositifs utilisant des meules lapidaires, il est donc nécessaire de surveiller ces obstacles tout en cheminant le long de la voie et de relever sur une certaine distance les meules qui rencontreraient sans cela ces obstacles. Ceci conduit à une surveillance difficile, à une perte de temps et parfois à l'endommagement de meules ou d'organes situés à proximité immédiate du rail et surtout entraîne une discontinuité du meulage.When reprofiling the rails of a track using such devices using lapidary grinding stones, it is therefore necessary to monitor these obstacles while traveling along the track and to lift up over a certain distance the grinding stones which would otherwise meet these obstacles. This leads to difficult monitoring, loss of time and sometimes damage to grinding wheels or bodies located in the immediate vicinity of the rail and above all results in discontinuity in grinding.

Pour éviter ces inconvénients on a tenté de réduire le diamètre des meules lapidaires pour qu'elles ne débordent pas trop du rail et n'entrent plus en conflit avec les obstacles le long de la voie. Ceci conduit toutefois à une usure très rapide des meules, leur surface de travail et leur volume étant alors très réduits, ce qui nécessite des arrêts fréquents du train de meulage pour changer les meules.To avoid these drawbacks, an attempt has been made to reduce the diameter of the lapidary wheels so that they do not protrude too far from the rail and no longer come into conflict with obstacles along the way. This however leads to very rapid wear of the grinding wheels, their working surface and their volume then being very reduced, which requires frequent stops of the grinding train to change the grinding wheels.

2. Les dispositifs utilisant des meules périphériques ou en forme de disque en contact avec le rail par leur périphérie. Des installations de reprofilage d'un rail utilisant de telles meules périphériques sont décrites par exemple dans les brevets US-A-3.738.066 ou dans la demande publiée FR-A-2.083.451. Le grave inconvénient de tels dispositifs réside dans le fait que, la meule reprofilant un objet arrondi et non une surface plane, la surface de travail de la meule prend la forme de l'objet qu'elle meule et devient par conséquent concave. Avec une telle meule déformée il n'est pas possible de redonner au rail un profil correct.2. Devices using peripheral or disc-shaped grinding wheels in contact with the rail at their periphery. Installations for reprofiling a rail using such peripheral grinding wheels are described for example in patents US-A-3,738,066 or in published application FR-A-2,083,451. The serious drawback of such devices lies in the fact that, the grinding wheel reprofiling a rounded object and not a flat surface, the working surface of the grinding wheel takes the form of the object which it grinds and therefore becomes concave. With such a deformed wheel it is not possible to give the rail a correct profile.

Il existe des dispositifs, par exemple celui décrit dans le brevet US-A-3.823.455, pour la préparation des extrémités des rails en vue de leur soudure. De tels dispositifs utilisent des meules périphériques de forme cylindrique ou tronconique. Ils ne permettent pas le reprofilage du champignon d'un rail.There are devices, for example that described in US-A-3,823,455, for preparing the ends of the rails for their welding. Such devices use peripheral grinding wheels of cylindrical or frustoconical shape. They do not allow the reprofiling of the rail head.

Pour éviter cet inconvénient majeur on a proposé de rectifier mécaniquement la meule soit de temps en temps, ce qui provoque l'arrêt voire l'immobilisation temporaire de l'installation de reprofilage, soit en continu ce qui nécessite un mécanisme compliqué et provoque une usure inadmissible de la meule réduisant grandement sa durée de vie.To avoid this major drawback, it has been proposed to mechanically correct the grinding wheel either from time to time, which causes the temporary reprofiling installation to stop or even be immobilized, or continuously which requires a complicated mechanism and causes wear. impermissible grinding wheel greatly reducing its service life.

Enfin, on a également proposé des dispositifs, par exemple celui décrit dans le EP-A-0.031.480, dans lesquels la meule est entraînée dans un mouvement de va-et-vient parallèle à la facette à meuler ce qui évite la déformation de sa face de travail mais nécessite un mécanisme précis et compliqué. De plus, la meule débordant alternativement de part et d'autre du rail son encombrement est augmenté et ne permet plus par exemple le meulage du congé en présence d'un contre-rail.Finally, devices have also been proposed, for example that described in EP-A-0.031.480, in which the grinding wheel is driven in a reciprocating movement parallel to the facet to be ground which avoids the deformation of its working face but requires a precise and complicated mechanism. In addition, the wheel alternately overflowing on either side of the rail its size is increased and no longer allows for example the grinding of the leave in the presence of a counter rail.

Lorsqu'on utilise ces meules périphériques en les entraînant en rotation suivant un axe vertical on rencontre les mêmes inconvénients d'encombrement qu'avec les meules lapidaires.

  • 3. On connaît encore par exemple du brevet AT-A-327.979 des dispositifs de meulage utilisant des meules coniques à la place de meules lapidaires, ceci en raison principalement du fait que la fixation de ces meules coniques est plus aisée. Dans les utilisations connues des meules coniques elles présentent les mêmes inconvénients que les meules lapidaires, c'est-à-dire un encombrement trop important.
  • 4. Enfin, on connaît, par exemple du brevet DE-A-2.612.174 un dispositif de reprofilage des rails d'une voie de chemin de fer comportant des unités de meulage montées sur des porte-outils déplaçables par rapport à des supports suivant une direction parallèle à l'axe de rotation des meules. Ces supports sont eux- mêmes déplaçables verticalement par rapport au châssis de la machine. Les meules sont cylindriques et comportent une surface de travail frontale tronconique. L'encombrement latéral de telles meules cylindriques à surface frontale de travail tronconique est grand du fait que l'angle que forme leur axe de rotation avec la verticale est réduit. Avec ce type de machine, il est nécessaire de stopper le meulage au voisinage d'un contre-rail, d'un bloc de signalisation ou d'une aiguille, pour relever les meules qui sans cela entrerait en contact avec ces obstacles.
When these peripheral grinding wheels are used by driving them in rotation along a vertical axis, the same space drawbacks are encountered as with lapidary grinding wheels.
  • 3. There are also known, for example from patent AT-A-327,979, grinding devices using conical grinding wheels instead of lapidary grinding wheels, this mainly due to the fact that the fixing of these conical grinding wheels is easier. In known uses of conical wheels they have the same drawbacks as lapidary wheels, that is to say too much space.
  • 4. Finally, there is known, for example from patent DE-A-2,612,174, a device for reprofiling the rails of a railway track comprising grinding units mounted on tool-holders which can be moved relative to the following supports. a direction parallel to the axis of rotation of the grinding wheels. These supports are themselves movable vertically relative to the machine chassis. The wheels are cylindrical and have a frustoconical front work surface. The lateral space requirement of such cylindrical grinding wheels with a frustoconical working front surface is large because the angle formed by their axis of rotation with the vertical is reduced. With this type of machine, it is necessary to stop grinding in the vicinity of a counter rail, a block of signaling or a needle, to raise the grinding wheels which would otherwise come into contact with these obstacles.

Tous ces dispositifs connus présentent en plus le double inconvénient de laisser des zones non meulées sur le rail, les meules ayant dû être relevées pour éviter les obstacles et d'imposer des reprises du travail où la profondeur de coupe ne peut pas être réguilière.All of these known devices also have the double disadvantage of leaving non-ground areas on the rail, the grinding wheels having to be raised to avoid obstacles and to impose resuming of work where the depth of cut cannot be regular.

Le but de la présente invention est de créer un dispositif de meulage d'un rail tendant à obvier aux inconvénients précités et qui permette de réaliser simultanément les objectifs suivants:

  • a. un reprofilage correct du rail quel que soit son environnement, c'est-à-dire même au voisinage immédiat de passages à niveau, aiguillages, contre-rails ou autres obstacles rencontrés le long de la voie.
  • b. l'utilisation d'une meule d'une diamètre normal pour éviter une usure trop rapide de celle-ci.
  • c. un rectifiage automatique suffisant de la surface de travail de la meule, pour éviter des déformations importantes de celle-ci qui conduiraient a un mauvais reprofilage du rail.
The purpose of the present invention is to create a device for grinding a rail tending to overcome the aforementioned drawbacks and which makes it possible to simultaneously achieve the following objectives:
  • at. correct reprofiling of the rail whatever its environment, that is to say even in the immediate vicinity of level crossings, switches, cross-rails or other obstacles encountered along the track.
  • b. the use of a grinding wheel with a normal diameter to avoid too rapid wear thereof.
  • vs. sufficient automatic grinding of the working surface of the grinding wheel, to avoid significant deformations thereof which would lead to poor reprofiling of the rail.

Le dispositif de meulage selon l'invention, tel que caractérisé dans la revendication 1, apporte une solution permettant d'éviter les inconvénients précités.The grinding device according to the invention, as characterized in claim 1, provides a solution making it possible to avoid the aforementioned drawbacks.

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

  • Les figures 1 à 4 sont des vues partiellement en coupe de quatre formes d'exécution du dispositif selon l'invention.
  • La figure 5 illustre, vue de côté, un groupe de deux dispositifs de meulage suivant une cinquième forme d'exécution, monté sur un chariot de guidage d'un véhicule ferroviaire.
  • La figure 6 est une coupe schématique selon la ligne V-V de la figure 5.
  • La figure 7 est une vue d'ensemble illustrant le montage sur un véhicule de reprofilage du rail en voie du dispositif de meulage illustré aux figures 5 et 6.
  • La figure 1 illustre schématiquement une première forme d'exécution du dispositif de meulage selon l'invention.
The accompanying drawing illustrates schematically and by way of example several embodiments of the device according to the invention.
  • Figures 1 to 4 are partially sectional views of four embodiments of the device according to the invention.
  • Figure 5 illustrates, side view, a group of two grinding devices according to a fifth embodiment, mounted on a guide carriage of a railway vehicle.
  • FIG. 6 is a schematic section along the line VV of FIG. 5.
  • FIG. 7 is an overall view illustrating the mounting on a reprofiling vehicle of the rail in the process of the grinding device illustrated in FIGS. 5 and 6.
  • Figure 1 schematically illustrates a first embodiment of the grinding device according to the invention.

Ce dispositif de meulage comporte une meule 1 dont la surface périphérique présente la forme d'une surface de révolution non cylindrique, ici une surface de révolution concave. Cette meule cloche 1 est fixée sur un axe 2 d'un moteur d'entraînement 3 électrique.This grinding device comprises a grinding wheel 1, the peripheral surface of which has the form of a non-cylindrical surface of revolution, here a concave surface of revolution. This bell wheel 1 is fixed on an axis 2 of an electric drive motor 3.

La carcasse du moteur 3 comporte une extension 3a pivotée sur un support 8 fixé de façon connue sur un chariot de guidage d'un véhicule ferroviaire (non illustré) mais pouvant être du type des chariots 6, 7 du dispositif décrit dans le brevet DE-B-2.701.216).The carcass of the motor 3 comprises an extension 3a pivoted on a support 8 fixed in a known manner to a guide carriage of a railway vehicle (not illustrated) but which may be of the type of carriages 6, 7 of the device described in patent DE- B-2.701.216).

Un vérin 5 est articulé sur le support 8 d'une part et d'autre part, par la tige 6a de son piston sur une oreille 3b de la carcasse du moteur 3.A jack 5 is articulated on the support 8 on the one hand and on the other hand, by the rod 6a of its piston on an ear 3b of the carcass of the motor 3.

La meule est en contact avec le rail 12 par sa face plane frontale et sa course d'avance, compensant son usure et définissant sa profondeur de coupe, s'effectue suivant un arc de cercle sous l'effet du vérin 5. Cette direction d'avance est sensiblement parallèle à la génératrice g de la meule au voisinage de son point de contact avec le rail 12, c'est-à-dire qu'elle forme avec l'axe de rotation de la meule 1 un angle égal à la moitié de l'angle au sommet formé par les tangents aux génératrices de la meule 1. De cette façon, la zone d'encombrement de la meule, au voisinage du rail, définie par sa face frontale et sa génératrice g est toujours la même quelle que soit l'avance de la meule. Grâce à cette disposition cette meule ne peut jamais entrer en contact avec des obstacles, contre-rail, boîtes de signalisation, etc., situés le long de la voie à proximité du rail à reprofiler.The grinding wheel is in contact with the rail 12 by its front planar face and its advance travel, compensating for its wear and defining its cutting depth, takes place in an arc under the effect of the jack 5. This direction d advance is substantially parallel to the generator g of the grinding wheel in the vicinity of its point of contact with the rail 12, that is to say that it forms with the axis of rotation of the grinding wheel 1 an angle equal to the half the angle at the apex formed by the tangents to the generatrices of the grinding wheel 1. In this way, the area of congestion of the grinding wheel, in the vicinity of the rail, defined by its front face and its generatrix g is always the same as it is let the grinding wheel advance. Thanks to this arrangement, this grinding wheel can never come into contact with obstacles, counter-rail, signaling boxes, etc., located along the track near the rail to be reprofiled.

Dans l'exemple illustré, la surface périphérique de la meule présente une génératrice en arc de cercle et le déplacement d'avance de la meule s'effectue suivant un rayon R sensiblement identique.In the example illustrated, the peripheral surface of the grinding wheel has a generator in an arc of a circle and the advance movement of the grinding wheel takes place along a radius R which is substantially identical.

Dans des variantes la surface périphérique de la meule peut présenter des génératrices curvilignes, non circulaires, dans ce cas les moyens d'avance de la meule doivent être conçus pour déplacer celle-ci sensiblement parallèlement à sa génératrice au voisinage du point de contact avec le rail.In variants, the peripheral surface of the grinding wheel may have curvilinear, non-circular generators, in this case the means for advancing the grinding wheel must be designed to move the latter substantially parallel to its generator in the vicinity of the point of contact with the rail.

Dans une variante, la surface périphérique de révolution de la meule pourrait être convexe.Alternatively, the peripheral surface of revolution of the grinding wheel could be convex.

Dans ce qui suit différentes formes d'exécution seront décrites, dans lesquelles la meule est conique, sa surface périphérique de révolution étant un tronc de cône, ce qui permet de prévoir une course d'avance rectiligne de la meule, sensiblement parallèle à sa génératrice au voisinage du point de contact avec le rail.In what follows, various embodiments will be described, in which the grinding wheel is conical, its peripheral surface of revolution being a truncated cone, which makes it possible to provide a rectilinear advance travel of the grinding wheel, substantially parallel to its generatrix. in the vicinity of the point of contact with the rail.

En se référant à la figure 2 le dispositif de meulage comporte une meule cloche ou lapidaire conique 1, c'est-à-dire dont la surface périphérique est constituée par un tronc de cône. Cette meule conique 1 est fixée à l'axe 2 d'un moteur d'entraînement 3 électrique.Referring to FIG. 2, the grinding device comprises a conical bell or lapidary wheel 1, that is to say the peripheral surface of which is constituted by a truncated cone. This conical grinding wheel 1 is fixed to the axis 2 of an electric drive motor 3.

Dans cette forme d'exécution la surface active de travail de la meule est plane et perpendiculaire à l'axe de symétrie et de rotation de la meule 1.In this embodiment, the active working surface of the grinding wheel is flat and perpendicular to the axis of symmetry and rotation of the grinding wheel 1.

Le moteur 3 d'entraînement est fixé rigidement sur un gousset 4 solidaire de la chambre 5 d'un vérin à double effet dont le piston 6 est solidaire d'une colonne de guidage 7 traversant de part en part la chambre 5. Cette colonne de guidage 7 est solidaire d'un support 8 fixé à l'aide de boulons 9 sur un chariot 10 d'un véhicule ferroviaire. Du fait des lumières 11 1 du support 8 celui-ci peut être fixé sur le chariot 10 suivant plusieurs orientations de manière à faire varier la position de la meule 1 par rapport au rail 12 suivant la partie du champignon du rail que l'on veut reprofiler. Deux ergots 5a de la chambre 5 du vérin, placés de part et d'autre du flanc du support 8, fixent la position angulaire de la chambre 5 par rapport à la colonne 7.The drive motor 3 is rigidly fixed to a gusset 4 secured to the chamber 5 of a double-acting cylinder whose piston 6 is secured to a guide column 7 passing right through the chamber 5. This column guide 7 is secured to a support 8 fixed with bolts 9 to a carriage 10 of a railway vehicle. Due to the lights 11 1 of the support 8 it can be fixed on the carriage 10 according to several orientations so as to vary the position of the grinding wheel 1 relative to the rail 12 depending on the part of the head of the rail that is desired reprofile. Two lugs 5a of the chamber 5 of the jack, placed on either side of the side of the support 8, fix the angular position of chamber 5 with respect to column 7.

La colonne de guidage 7 est munie de conduits 13, 14 débouchant d'un côté et de l'autre du piston 6 dans la chambre 5 du vérin hydraulique ou pneumatique.The guide column 7 is provided with conduits 13, 14 opening on one side and the other of the piston 6 in the chamber 5 of the hydraulic or pneumatic cylinder.

Dans cette forme d'exécution, où la meule 1 reprofile le congé du champignon du rail, l'angle rp compris entre l'axe du vérin provoquant le déplacement d'avance de la meule 1, déplacement définissant la profondeur de coupe et compensant l'usure de la meule, et l'axe de rotation de la meule 1 est de l'ordre de 30°. Cet angle peut être choisi à l'intérieur de très larges limites en fonction de la portion du rail devant être reprofilée.In this embodiment, where the grinding wheel 1 reprofiles the leave of the rail head, the angle rp between the axis of the jack causing the grinding wheel 1 to move in advance, displacement defining the depth of cut and compensating for l 'wear of the grinding wheel, and the axis of rotation of the grinding wheel 1 is of the order of 30 °. This angle can be chosen within very wide limits depending on the portion of the rail to be reprofiled.

Dans l'exemple illustré cet angle rp est sensiblement égal à la moitié de l'angle au sommet α de la meule conique 1, de sorte que la direction d'avance de la meule 1 vers le rail 12 est sensiblement parallèle à la génératrice extérieure de la meule au voisinage du point de contact de celle-ci avec le rail.In the example illustrated, this angle rp is substantially equal to half the angle at the apex α of the conical grinding wheel 1, so that the direction of advance of the grinding wheel 1 towards the rail 12 is substantially parallel to the external generator. of the grinding wheel in the vicinity of its contact point with the rail.

Grâce à l'utilisation d'une meule conique 1 et du fait que son axe d'entraînement en rotation forme un angle rp avec la direction de la course d'avance de la meule, le dispositif de meulage est positionné par rapport à la voie de telle sorte qu'un contre-rail, une boîte de signalisation ou tout autre obstacle situé le long de la voie soit hors de la zone dans laquelle la meule se déplace lors de l'avance du véhicule le long de la voie.Thanks to the use of a conical grinding wheel 1 and the fact that its rotational drive axis forms an angle rp with the direction of the advance travel of the grinding wheel, the grinding device is positioned relative to the track in such a way that a counter rail, a signaling box or any other obstacle located along the track is outside the zone in which the grinding wheel moves during the advance of the vehicle along the track.

Dans la troisième forme d'exécution illustrée à la figure 3 on retrouve la meule conique 1 et son moteur d'entraînement 3 porté par le gousset 4 ainsi que le vérin comprenant les éléments 5, 6 et 7 commandant la course d'avance de la meule 1 par rapport au support 8.In the third embodiment illustrated in Figure 3 we find the conical wheel 1 and its drive motor 3 carried by the gusset 4 as well as the cylinder comprising the elements 5, 6 and 7 controlling the advance stroke of the grinding wheel 1 relative to the support 8.

Ici également l'axe de rotation de la meule 1 forme un angle rp avec la direction d'avance de cette meule définie par l'axe du vérin.Here also the axis of rotation of the grinding wheel 1 forms an angle rp with the direction of advance of this grinding wheel defined by the axis of the jack.

Dans cette forme d'exécution la surface frontale de travail de la meule 1 est de forme tronconique et intersecte la surface périphérique de la meule, également tronconique, approximativement à angle droit. Cette disposition est particulièrement avantageuse pour reprofiler la surface de roulement supérieure du rail 12. On voit que grâce à cette disposition cette surface de roulement supérieure du rail peut être reprofilée même aux passages à niveau où le rail 12 est pratiquement enterré dans la chaussée.In this embodiment, the front working surface of the grinding wheel 1 is of frustoconical shape and intersects the peripheral surface of the grinding wheel, also frustoconical, approximately at right angles. This arrangement is particularly advantageous for reprofiling the upper running surface of the rail 12. It is seen that thanks to this arrangement this upper running surface of the rail can be reprofiled even at level crossings where the rail 12 is practically buried in the roadway.

Ici également l'angle (p compris entre l'axe de rotation de la meule 1 et la direction d'avance de celle-ci, soit l'axe du vérin est sensiblement égal à la moitié de l'angle au sommet α de la meule conique 1 et l'avance de la meule s'effectue sensiblement parallèlement à sa génératrice au voisinage de son point de contact avec le rail.Here also the angle (p included between the axis of rotation of the grinding wheel 1 and the direction of advance thereof, that is to say the axis of the jack is substantially equal to half the angle at the apex α of the tapered grinding wheel 1 and the advancement of the grinding wheel takes place substantially parallel to its generator in the vicinity of its point of contact with the rail.

Le support 8 peut dans cette forme d'exécution être monté sur le chariot comme illustré par exemple à la figure 1. Ainsi, il est possible d'incliner la meule par rapport au rail à reprofiler en fonction de la portion de la table de roulement devant être reprofilée.The support 8 can in this embodiment be mounted on the carriage as illustrated for example in Figure 1. Thus, it is possible to tilt the grinding wheel relative to the rail to be reprofiled according to the portion of the rolling table to be reprofiled.

La figure 4 illustre une forme d'exécution du dispositif de meulage utilisé pour le reprofilage de la face latérale du champignon du rail.Figure 4 illustrates an embodiment of the grinding device used for reprofiling the lateral face of the rail head.

La meule conique 1 est entraînée en rotation par le moteur 3 suivant un axe horizontal. Le gousset 4 solidaire du moteur 3 coulisse sur deux barres 15 solidiaires du support 8. Un ergot du gousset 4 est articulé sur la tige 16 d'un vérin à double effet 17 commandant la course d'avance de la meule 1. Ici également la direction d'avance de la meule 1, parallèle aux tiges 15, forme un angle ϕ avec l'axe de rotation de la meule 1 et est sensiblement parallèle à la génératrice de la meule au voisinage de son point de contact avec le rail. Cet angle a a été choisi ici sensiblement égal à 45° et l'angle au sommet de la meule 1 est approximativement égal à 90°.The conical wheel 1 is rotated by the motor 3 along a horizontal axis. The gusset 4 secured to the motor 3 slides on two solid bars 15 of the support 8. A lug of the gusset 4 is articulated on the rod 16 of a double-acting cylinder 17 controlling the advance travel of the grinding wheel 1. Here also the direction of advance of the grinding wheel 1, parallel to the rods 15, forms an angle ϕ with the axis of rotation of the grinding wheel 1 and is substantially parallel to the generator of the grinding wheel in the vicinity of its point of contact with the rail. This angle has been chosen here substantially equal to 45 ° and the angle at the top of the grinding wheel 1 is approximately equal to 90 °.

Il est évident que sur un même chariot de guidage on peut prévoir plusieurs dispositifs de meulage ou groupes de dispositifs de meulage identiques ou différents et donc adaptés à reprofiler des parties différentes du champignon du rail. Tous ces dispositifs de meulage sont situés en dehors de la trajectoire des obstacles situés le long d'une voie ce qui constitue une grande sécurité dans la travail et un gain de temps appréciable, le train de meulage ne devant pas subir d'arrêts pour le retrait des meules pour éviter un obstacle et surtout garantit la continuité et la précision du meulage.It is obvious that on the same guide carriage, it is possible to provide several grinding devices or groups of identical or different grinding devices and therefore suitable for reprofiling different parts of the head of the rail. All these grinding devices are located outside the trajectory of obstacles located along a track, which constitutes great safety in work and an appreciable saving of time, the grinding train not having to undergo stops for the grinding wheel removal to avoid an obstacle and above all guarantees the continuity and precision of grinding.

On évite ainsi de laisser sur le rail des zones non meulées en alternance avec des zones meulées, et assure une profondeur de coupe régulière sur toute la longueur meulée du rail.This avoids leaving non-ground areas on the rail alternating with ground areas, and ensures a regular depth of cut over the entire length of the ground track.

Dans les quatre formes d'exécution décrites le support 8 peut être déplacé angulairement par rapport au chariot porte-outils 10 pour permettre de meuler différentes portions de la surface du champignon du rail. Ce déplacement est une rotation autour d'un axe parallèle au rail, dans les exemples illustrés autour d'un axe fictif situé à l'intérieur du rail, plus précisément du champignon du rail. Ce déplacement ne modifie pas l'angle ϕ compris entre la direction d'avance de la meule et son axe de rotation mais permet de régler la direction suivant laquelle la meule est déplacée par rapport au rail.In the four embodiments described the support 8 can be moved angularly relative to the tool carriage 10 to allow grinding different portions of the surface of the rail head. This movement is a rotation around an axis parallel to the rail, in the examples illustrated around a fictitious axis located inside the rail, more precisely the head of the rail. This movement does not modify the angle ϕ between the direction of advance of the grinding wheel and its axis of rotation but allows the direction in which the grinding wheel is moved relative to the rail to be adjusted.

La figure 7 illustre un véhicule ferroviaire pour le reprofilage des rails d'une voie de chemin de fer muni de deux chariots porte-outils 18, 19, roulant sur le rail à l'aide de roues à boudin 20, reliés au châssis du véhicule d'une part par des liaisons d'entraînement 21, 22 du chariot le long du rail et d'autre part par des liaisons articulées comportant des vérins 23, 24 permettant de déplacer le chariot verticalement par rapport au châssis du véhicule et permettant également d'appliquer les chariots contre le rail 12 avec une force déterminée.FIG. 7 illustrates a railway vehicle for reprofiling the rails of a railway track provided with two tool-carrying carriages 18, 19, rolling on the rail using flanged wheels 20, connected to the chassis of the vehicle on the one hand by drive links 21, 22 of the carriage along the rail and on the other hand by articulated links comprising jacks 23, 24 making it possible to move the carriage vertically relative to the chassis of the vehicle and also allowing d 'apply the carriages against the rail 12 with a determined force.

Comme illustré en détail aux figures 5 et 6 chaque chariot porte deux dispositifs de meulage présentant chacun deux unités de travail formées d'un moteur d'entraînement 25 et d'une meule conique 26. Les deux unités de travail d'un même dispositif de meulage sont rigidement reliées entre elles par un support 27.As illustrated in detail in Figures 5 and 6, each carriage carries two grinding each having two working units formed by a drive motor 25 and a conical grinding wheel 26. The two working units of the same grinding device are rigidly connected together by a support 27.

La liaison de ce support 27 au chariot 18 est réalisée à l'aide de leviers formant un parallélogramme déformable. Deux leviers parallèles 28, 29 sont pivotés à l'une de leurs extrémités sur le chariot en 30, 31 respectivement. L'extrémité libre du levier 28 est pivotée en 32 sur l'une des extrémités d'une bielle 33 dont l'autre extrémité est pivotée sur le support 27. L'extrémité libre du levier 29 est pivotée en 34 sur la bielle 33.The connection of this support 27 to the carriage 18 is carried out using levers forming a deformable parallelogram. Two parallel levers 28, 29 are pivoted at one of their ends on the carriage at 30, 31 respectively. The free end of the lever 28 is pivoted at 32 on one of the ends of a connecting rod 33 the other end of which is pivoted on the support 27. The free end of the lever 29 is pivoted at 34 on the connecting rod 33.

Les distances séparant les points de pivotement 30, 31 et 32, 34 ainsi que les points de pivotement 30, 32 et 31, 34 sont respectivement égales de manière à former un parallélogramme déformable. La bielle 33 s'étend verticalement comme la ligne reliant les points de pivotement 30 et 31.The distances between the pivot points 30, 31 and 32, 34 as well as the pivot points 30, 32 and 31, 34 are respectively equal so as to form a deformable parallelogram. The connecting rod 33 extends vertically like the line connecting the pivot points 30 and 31.

L'extrémité du levier 28 pivotée sur le chariot comporte une oreille 35 articulée sur le boîtier d'un vérin à double effet 36 dont la tige 37, solidaire du piston, est pivotée sur une oreille 38 que présente l'extrémité du levier 29 pivotée sur la bielle 33.The end of the lever 28 pivoted on the carriage comprises an ear 35 articulated on the casing of a double-acting cylinder 36 whose rod 37, integral with the piston, is pivoted on an ear 38 which has the end of the pivoted lever 29 on the connecting rod 33.

Ainsi, lorsque le vérin 36 exerce une poussée entre les deux oreilles 35, 38, la bielle 33 tend à déplacer le support 27 verticalement vers le bas provoquant un déplacement d'avance des meules en direction du rail 12. Une traction sur les oreilles 35, 38 provoque à l'inverse un déplacement vertical vers le haut du support 27.Thus, when the jack 36 exerts a thrust between the two ears 35, 38, the connecting rod 33 tends to move the support 27 vertically downwards, causing the grinding wheels to move in advance towards the rail 12. Traction on the ears 35 , 38 conversely causes a vertical displacement upwards of the support 27.

Ici également l'axe de rotation des meules 26 n'est pas confondu avec la direction d'avance de ces meules, commandée par la bielle 33, mais forme un angle q J par rapport à cette direction. Cet angle q J peut être réglé en modifiant la position angulaire de chaque unité de travail par rapport au support 27.Here also the axis of rotation of the grinding wheels 26 is not confused with the direction of advance of these grinding wheels, controlled by the connecting rod 33, but forms an angle q J with respect to this direction. This angle q J can be adjusted by modifying the angular position of each working unit relative to the support 27.

De cette façon la direction d'avance des meules est sensiblement parallèle à leur génératrice au voisinage de leur point de contact avec le rail ce qui a pour effet qu'ici également l'avance de la meule ne modifie pas sa zone d'encombrement le long du rail et qu'elle ne peut donc pas venir en conflit avec des obstacles placés le long de la voie.In this way the direction of advance of the grinding wheels is substantially parallel to their generatrix in the vicinity of their point of contact with the rail, which has the effect that here also the advance of the grinding wheel does not modify its area of congestion. along the rail and therefore cannot come into conflict with obstacles placed along the track.

Tout le dispositif à parallélogramme décrit ci- dessus peut être pivoté autour d'axes 39 afin de pouvoir orienter le mouvement d'avance des meules en fonction de la zone du profil de rail à rectifier.The entire parallelogram device described above can be pivoted around axes 39 in order to be able to orient the advance movement of the grinding wheels as a function of the area of the rail profile to be ground.

Grâce à cette disposition on obtient les mêmes avantages que décrits plus haut, notamment en ce qui concerne l'encombrement des meules le long de la voie comme on peut le constater sur la figure 6 qui est une vue partielle et schématique selon la ligne V-V de la figure 5.Thanks to this arrangement, the same advantages are obtained as described above, in particular as regards the size of the grinding wheels along the track as can be seen in FIG. 6 which is a partial and schematic view along the line VV of Figure 5.

On voit également sur cette figure 6, que chaque unité moteur 25 - meule 26, est réglée avec un autre inclinaison par rapport au rail de manière à reprofiler des portions différentes de la surface du champignon du rail. Ceci est obtenu dans cette forme d'exécution par un montage de chaque unité moteur-meule sur le support 27 à l'aide par exemple de boulons et de lumières, comme dans les exécutions précédentes, permettant un réglage angulaire. Ici également, le pivotement que peut effectuer l'unité moteur 25 - meule 26 par rapport au support 27 s'effectue de préférence suivant un arc de cercle centré sur un axe fictif parallèle au rail 12, soit à la direction du déplacement du véhicule, cet axe fictif étant situé dans le rail.It can also be seen in this FIG. 6, that each motor unit 25 - grinding wheel 26, is adjusted with another inclination relative to the rail so as to reprofile different portions of the surface of the head of the rail. This is obtained in this embodiment by mounting each motor-wheel unit on the support 27 using, for example, bolts and lights, as in the previous embodiments, allowing angular adjustment. Here also, the pivoting which the motor unit 25 - grinding wheel 26 can carry out relative to the support 27 is preferably carried out in an arc centered on a fictitious axis parallel to the rail 12, that is to say in the direction of movement of the vehicle, this fictitious axis being located in the rail.

Il ressort aussi de la figure 6 que les unités peuvent être inclinées soit à l'intérieur de la voie avec un angle cp, soit à l'extérieur de la voie avec l'angle rp' sans interférer avec les obstacles situés le long de la voie.It also appears from FIG. 6 that the units can be inclined either inside the track with an angle cp, or outside the track with the angle rp 'without interfering with the obstacles located along the way.

Grâce au décalage angulaire, dans un plan vertical perpendiculaire au rail, entre la direction d'avance de chaque meule et son axe de rotation, la meule prend une position inclinée et sa partie périphérique inférieure est en contact avec le rail. La plus grande partie de la meule est située au-dessus du rail hors de la zone occupée par les obstacles. On arrive donc grâce à cette disposition à maintenir les meules en travail contre le rail en permanence même au passage d'obstacles tels les passages à niveau, les boîtes de signalisation, contrerails, etc, ce qui permet un gain de temps appréciable, assure une grande précision de reprofilage et surtout un meulage régulier puisque les meules sont toujours en contact avec le rail. De plus, avec cette réalisation l'encombrement de la meule par rapport aux obstacles reste le même quelle que soit l'avance de la meule.Thanks to the angular offset, in a vertical plane perpendicular to the rail, between the direction of advance of each grinding wheel and its axis of rotation, the grinding wheel takes an inclined position and its lower peripheral part is in contact with the rail. Most of the grinding wheel is located above the rail outside the area occupied by obstacles. We therefore arrive thanks to this arrangement to keep the grinding stones working against the rail permanently even when passing obstacles such as level crossings, signaling boxes, counter-tracks, etc., which allows an appreciable time saving, ensures a high reprofiling precision and especially regular grinding since the grinding wheels are always in contact with the rail. In addition, with this embodiment the size of the wheel relative to obstacles remains the same regardless of the advance of the wheel.

Claims (13)

1. Grinding device for reprofiling a rail of a railway track comprising at least one grinding unit having at least one grinding wheel (1; 26) driven in rotation by means of a motor (3; 25), this device being mounted on a guiding carriage (18, 19) of a vehicle, means (23, 24) being provided to displace in height the carriage (18, 19) with respect to the vehicle and to apply this carriage (18, 19) against the rail (12) with a predetermined force, the grinding wheel (1; 26) having a frontal active surface characterized by the fact that the grinding wheel (1; 26) has a peripheral surface having the shape of a non cylindrical surface of revolution the side lines of which or the tangents to the side lines of which intersects above the rail (12) on the axis of rotation of the grinding wheel (1; 26); and that the application of the grinding wheel (1; 26) against the rail (12) is done by means causing a feeding movement of the grinding wheel (1; 26), defining the cutting depth and compensating its wearing off, along a direction forming in a plan perpendicular to the axis of the rail (12), an angle (rp) with the axis of rotation of the grinding wheel (1; 26) approximately equal to half of the summit angle (a) formed by the side lines or the tangents to the side lines of the grinding wheel (1; 26).
2. Device according to claim 1, characterized by the fact the grinding wheel (1) is a grinding wheel the peripheral surface of which is conical.
3. Device according to claim 1 or 2, characterized by the fact that the working face of the grinding wheel (1) is plan and perpendicular to its rotation axis.
4. Device according to one of claims 1 to 3, characterized by the fact that it is angularly displaceable with respect to the carriage (18, 19) around an axis extending parallely to the rail (12).
5. Device according to claim 1, characterized by the fact that the angle (rp) comprised between the feeding direction of the grinding wheel (1; 26) and its rotation axis is approximately equal to 30°.
6. Device according to claim 1, characterized by the fact that the angle (tp) comprised between the feeding direction of the grinding wheel (1; 26) and its rotation axis is approximately equal to 45°.
7. Device according to one of the claims 1 to 4 characterized by the fact that the feeding means of the grinding wheel (26) comprises a lever assembly (28, 29, 35, 38, 33) forming a deformable parallelogram connecting at least one grinding unit (26, 25) to the carriage (18, 19), and by the fact that a jack (36) controls the deformations of said parallelogram.
8. Device according to one of the preceding claims characterized by the fact that the grinding units (1, 3 and 25, 26) are mounted pairwise on a same support (8, 10) of the carriage (18, 19).
9. Device according to claim 8, characterized by the fact that the feeding direction of the grinding wheels (1; 26) of the grinding units (1, 3 and 25, 26) mounted on a same support (8, 10) is the same.
10. Device according to claim 9, characterized by the fact that it comprises means (9, 11; 39) to control the inclination of each grinding unit (1, 3) with respect to their common support (8; 10).
11. Device according to claim 1, characterized by the fact that the peripheral surface of revolution of the grinding wheel (1) is concave.
12. Device according to claim 1 or 11, characterized by the fact that the feeding of the grinding wheel (1) is made along a curvilinear path.
13. Device according to claim 12, characterized by the fact that the feeding of the grinding wheel (1) is made along an arch of circle.
EP81105139A 1980-07-23 1981-07-02 Grinding machine for rectifying a rail of a railroad track Expired EP0044964B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81105139T ATE6278T1 (en) 1980-07-23 1981-07-02 GRINDING DEVICE FOR FORMING A RAILWAY RAIL.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5331/80 1980-07-23
CH533180A CH626673A5 (en) 1980-07-23 1980-07-23

Publications (2)

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EP0044964A1 EP0044964A1 (en) 1982-02-03
EP0044964B1 true EP0044964B1 (en) 1984-02-15

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US (1) US4492059A (en)
EP (1) EP0044964B1 (en)
JP (1) JPS5751303A (en)
AT (1) ATE6278T1 (en)
AU (1) AU542549B2 (en)
CA (1) CA1167647A (en)
CH (1) CH626673A5 (en)
DE (1) DE3162282D1 (en)
ZA (1) ZA814616B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105463960A (en) * 2015-12-22 2016-04-06 常州市瑞泰工程机械有限公司 Steel rail web grinding and derusting machine

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3307456A1 (en) * 1983-03-03 1984-09-06 Deutsche Gesellschaft für Wiederaufarbeitung von Kernbrennstoffen mbH, 3000 Hannover HANDLING DEVICE FOR REMOTE CONTROLLED WORKING WITH RESUME
FR2557488B1 (en) * 1983-12-28 1987-07-10 Geismar Anc Ets L USED RAIL REPROFILING MACHINE
CH655528B (en) * 1984-02-06 1986-04-30
US4779384A (en) * 1986-02-13 1988-10-25 Harsco Corporation Rail grinder
US4862647A (en) * 1987-08-31 1989-09-05 Loram Maintenance Of Way, Inc. Rail grinding machine
US4829723A (en) * 1987-10-16 1989-05-16 Loram Maintenance Of Way, Inc. Rail grinding machine
JPH02152336A (en) * 1988-12-05 1990-06-12 Nec Corp Digital multiplexer
CH678341A5 (en) * 1989-03-02 1991-08-30 Speno International
US5185959A (en) * 1990-03-29 1993-02-16 Tamglass Oy Apparatus for grinding the edge of a glass sheet
US5359815A (en) * 1992-11-06 1994-11-01 Harsco Corporation Profile grinder
EP0665332B1 (en) * 1994-02-01 1998-04-15 Franz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H. Apparatus for grinding rails
CH690963A5 (en) * 1996-12-20 2001-03-15 Speno Internat S A A device for finishing the reprofiling means and continuously from the surface of the head of at least one rail of a railway track.
US6033291A (en) * 1998-03-16 2000-03-07 Loram Maintenance Of Way, Inc. Offset rail grinding
US6033166A (en) * 1998-08-27 2000-03-07 Koppers Industries, Inc. Rail milling machine
WO2003042458A2 (en) 2001-10-25 2003-05-22 Loram Maintenance Of Way, Inc. Method and apparatus for non-interrupted grinding of railroad crossing and main line track
US7442115B1 (en) * 2003-05-15 2008-10-28 Racine Railroad Products, Inc. Railway grinder
US6953386B1 (en) 2004-07-19 2005-10-11 Railworks Corporation Active spark control
US6981907B1 (en) * 2004-11-03 2006-01-03 Railworks Corporation High angle grinder
JP4649288B2 (en) * 2005-08-05 2011-03-09 保線機器整備株式会社 Straightening device for repairing worn parts of grooved rails on trams
USD651223S1 (en) * 2006-06-23 2011-12-27 Kennametal Inc. Machining insert for the initial machining and/or the reprofiling of at least one wheel of a vehicle that runs on rails, and for the initial machining and/or the reprofiling of a disc of a disc brake for atleast one wheel of a vehicle that runs on rails
US8353278B2 (en) * 2009-07-22 2013-01-15 C.M.S.-North America, Inc. Rotary stone cutting tool
AT510566B1 (en) * 2010-11-11 2012-05-15 Linsinger Maschinenbau Gesellschaft M B H METHOD FOR PROFILING A LAYERED RAIL AND MACHINING VEHICLE
US8587939B2 (en) 2011-01-31 2013-11-19 Apple Inc. Handheld portable device
US8911280B2 (en) * 2011-01-31 2014-12-16 Apple Inc. Apparatus for shaping exterior surface of a metal alloy casing
US8665160B2 (en) 2011-01-31 2014-03-04 Apple Inc. Antenna, shielding and grounding
JP5845477B2 (en) * 2011-10-25 2016-01-20 東日本旅客鉄道株式会社 Rail grinding device
CN106029982B (en) * 2013-10-21 2019-06-11 哈斯科技术有限责任公司 Grind power device and the method for rail application operating grinding power device
JP6667100B2 (en) * 2015-12-14 2020-03-18 株式会社ジェイテクト Truer, truing device, grinding device and truing method having the same
JP6613292B2 (en) * 2017-11-30 2019-11-27 有限会社明石軌道 Rail straightening device
US11668055B2 (en) * 2018-08-27 2023-06-06 Harsco Technologies LLC Rail milling vehicle
CN113174790B (en) * 2021-04-26 2022-10-04 株洲时代电子技术有限公司 Composite grinding method for steel rail

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031480A1 (en) * 1979-12-31 1981-07-08 Speno International S.A. Grinding device for the continuous reprofiling of a rail of a railway track

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141305B (en) * 1958-08-07 1962-12-20 Elektro Thermit Gmbh Rail grinding device for grinding the heads of frogs or the like.
US3358406A (en) * 1965-10-14 1967-12-19 Speno International Rail grinder
US3593465A (en) * 1968-04-01 1971-07-20 James A Krippes Concrete rail grinder
US3908317A (en) * 1971-08-09 1975-09-30 Lester N Hambrick Rail base grinding apparatus
US3823455A (en) * 1972-11-09 1974-07-16 Racine Railroad Prod Inc Rail polishing machine
DE2410564C3 (en) * 1974-03-06 1978-08-10 Georg Robel Gmbh & Co, 8000 Muenchen Rail head reshaping machine
US3945142A (en) * 1974-08-02 1976-03-23 Carl Walther, Sportwaffenfabrik Mount for a sight on firearms
AT344772B (en) * 1975-12-01 1978-08-10 Plasser Bahnbaumasch Franz RAIL GRINDING MACHINE

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0031480A1 (en) * 1979-12-31 1981-07-08 Speno International S.A. Grinding device for the continuous reprofiling of a rail of a railway track

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105463960A (en) * 2015-12-22 2016-04-06 常州市瑞泰工程机械有限公司 Steel rail web grinding and derusting machine

Also Published As

Publication number Publication date
JPH0133603B2 (en) 1989-07-14
ZA814616B (en) 1982-07-28
AU542549B2 (en) 1985-02-28
US4492059A (en) 1985-01-08
AU7330381A (en) 1982-01-28
ATE6278T1 (en) 1984-03-15
CA1167647A (en) 1984-05-22
JPS5751303A (en) 1982-03-26
EP0044964A1 (en) 1982-02-03
DE3162282D1 (en) 1984-03-22
CH626673A5 (en) 1981-11-30

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