EP0657582A1 - Rail grinder - Google Patents

Rail grinder Download PDF

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Publication number
EP0657582A1
EP0657582A1 EP94402679A EP94402679A EP0657582A1 EP 0657582 A1 EP0657582 A1 EP 0657582A1 EP 94402679 A EP94402679 A EP 94402679A EP 94402679 A EP94402679 A EP 94402679A EP 0657582 A1 EP0657582 A1 EP 0657582A1
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EP
European Patent Office
Prior art keywords
machine
rail
grinding
pivoting
machine according
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.)
Ceased
Application number
EP94402679A
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German (de)
French (fr)
Inventor
Dominique Torti
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.)
Societe des Anciens Etablissements Lucien Geismar SAS
Original Assignee
Societe des Anciens Etablissements Lucien Geismar SAS
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 Societe des Anciens Etablissements Lucien Geismar SAS filed Critical Societe des Anciens Etablissements Lucien Geismar SAS
Publication of EP0657582A1 publication Critical patent/EP0657582A1/en
Ceased 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 invention relates to a machine for grinding rails of a railway track, advantageously self-propelled, of the type comprising a chassis supported by flanged wheels bearing on the rails of the railway track, at least one grinding unit provided with a grinding wheel and a device for rotating the grinding wheel, means for lowering and lifting the unit relative to the rail, means for pivoting the unit around the rail to be ground, in a perpendicular plane to the axis thereof and means for lateral displacement of the unit, forming obstacle avoidance means, as well as a device for supporting the unit on the chassis.
  • Grinding machines of this type are already known, but these are produced either in the form of grinding trains provided with a large number of grinding modules and therefore of considerable length, or in the form of relatively small manual grinders .
  • These grinding machines have the disadvantage that they do not allow the rectification and very particularly the reprofiling of curves, switches, sections of track with irregular wear, spliced or crowded tracks of apparatuses or lengths of a few hundred meters, at a acceptable level of productivity.
  • the grinding wheels are too big for this purpose, while the manual grinders are too small.
  • the present invention aims to provide a grinding machine which does not have the drawbacks of known grinding machines, which have just been stated.
  • the grinding machine according to the invention is characterized in that the lowering and lifting means, the pivoting means and the lateral displacement means of a grinding unit are incorporated into said support, forming a compact block of relatively small dimensions.
  • the support of the grinding unit comprises a pivot member, integral with the chassis and on which is pivotally mounted about an axis parallel to the longitudinal axis of the machine, a first part of said compact block on which is pivotally mounted about an axis perpendicular to the pivot a second part carrying the grinding unit, movably perpendicular to said pivot.
  • the machine is equipped with an alignment device between the grinding units and the rail to be ground, which comprises rollers and means for pressing these rollers on the rail opposite to the rail to be ground , to produce a lateral offset of the machine until the flanges of the wheels bearing on the rail to be ground come to bear on the latter.
  • the grinding machine comprises two motorized axles 1 each provided with two flanged wheels 2 which bear on the two rails 3 of a railway track and on which a chassis 4 rests. this chassis are mounted the various devices of the machine.
  • the machine is equipped with four grinding units 6 which are grouped in pairs. Each unit comprises a grinding wheel 7 of the plug type and a motor 8 for driving the grinding wheel in rotation, by means of means enclosed in a casing 9.
  • the motor 8 is preferably a hydraulic motor.
  • the four grinding units work flat side by side on the same rail and are therefore aligned at a lateral edge of the machine between the two corresponding flanged wheels 2.
  • Each group of grinding units 6 is fixed to a common base 10 secured to a longitudinal beam 11 of the chassis 4, by means of a positioning device 12 of each grinding unit, relative to the rail.
  • Each positioning device is produced in the form of a compact assembly or block of small size.
  • the positioning device essentially comprises a cylindrical column 13 of circular cross section, which is provided with a base portion 14 made in the form of a sleeve whose axis extends perpendicular to the axis of the column and which is rotatably mounted on a pivot-shaped member 15, by means of ball bearings indicated at 16.
  • This pivot is fixed on the foot 10 so as to extend parallel to the rail 3. It can be seen that the foot 10 carries a second pivot 15 which is axially aligned with the first but oriented in the opposite direction to receive the positioning device of the second grinding unit of the grinding group.
  • a part 18 which carries the grinding unit.
  • This part is configured so as to constitute the body of a double-acting hydraulic cylinder whose piston rod 19 extends parallel to the column 13 and is fixed at its free end to a support 20 in the form of a cap which covers the free upper end of the column and is rotatably mounted around this end.
  • Reference 21 indicates the internal space of the jack.
  • the casing 9 of the grinding unit 6, the support part 18 and the bearing part 17 are produced in the form of a single block 22 by constituting parallel parts one of the others, which are juxtaposed in the same plane.
  • the block-shaped assembly is equipped with means allowing it to pivot about the axis of the column.
  • two counterbores 23 are formed in the peripheral cylindrical surface of the column 13, which extend parallel to the axis of the column, over practically the entire length of the latter.
  • the two counterbores are located symmetrically with respect to the vertical diametral plane P-P, parallel to the rail, of the column, on the side thereof, which is oriented towards the grinding unit.
  • a friction piece 24 In each counterbore engages, in an axially sliding manner, a friction piece 24.
  • These pieces have a length slightly less than the height of the bearing portion 17 and are configured so as to completely fill the countersink portion which they occupy. , in order to ensure the continuity of the cylindrical surface of the column.
  • Four notches 26 are formed in each counterbore at locations regularly offset in the axial direction of the column.
  • the members for controlling the rotation of the positioning block 22 around the column are formed by hydraulic jacks 27 which are incorporated in the block, each facing a notch 26 so that in each notch engages transversely to the axis of the column, the end of a piston rod 28 of a cylinder.
  • a sleeve 29 is radially interposed between the cylindrical faces of the column and of the bearing 17.
  • the sleeve has a window 30 allowing the passage of a piston rod 28, taking into account the beating angle of the pivoting of the positioning block on each side of the PP plane.
  • Each cylinder is a single-acting type cylinder and the positioning body is rotated by actuating the appropriate cylinder depending on the direction of rotation.
  • These jacks allow a lateral offset of the grinding wheel of the grinding unit from the rail, from -50 mm to +50 mm, for any angular position of the grinding wheel around the rail.
  • the bearing part 17 has at each end a seal indicated at 31 which is interposed between the bearing and the column, in an area where the peripheral face of the column is completely cylindrical, that is to say -to say above and below the series of notches 24.
  • the rod 19 of the jack 18 is surrounded by a sealing bellows 32 and that bellows 33 and 34 are provided around the column , respectively, above and below the bearing 17.
  • the pivoting of the positioning block relative to the rail is carried out using a hydraulic cylinder 35 whose rod 36 is fixed to the sleeve 14 of the block, by the through an attachment piece 37, while the body 38 of the jack is articulated at 39 to a console 40 secured to the chassis 4.
  • the grinding wheel can thus be made to pivot around the rail at an angle of -30 to +90 ° + or from -90 to + 30 °.
  • the two flanged wheels 2 located on the side of the rail to be ground are mounted fixed on the chassis while the two wheels which are supported on the other mounted rail are each on a beam 50 which extends parallel to the longitudinal axis of the machine and is articulated at the center line transverse to the chassis 4 so as to be able to pivot around an axis 51 parallel to this line.
  • a spring 52 is interposed between each beam and the chassis 4, as is shown in particular in FIG. 6.
  • the machine according to the invention further comprises two devices 43 which ensure alignment between the grinding units 6 and the grinding rail 3 and each of which is associated with an axle 1.
  • Each device 43 comprises a roller 44 which is rotatably mounted in a bearing 45 fixed to the end of an arm 46 which extends perpendicular to the axis of the roller and whose free end is articulated at 47 to a horizontal transverse arm 49 which is fixed by its other end to the face upper of the pivoting beam 50.
  • a substantially horizontal hydraulic cylinder 48 is interposed between the arm 46 and the chassis to ensure the pivoting of the arm between a position in which the roller 44 is pressed against the rail opposite the rail to be ground, under the effect of the jack 48.
  • Plating the roller shifts the machine laterally until the flanges of the wheels 2 bearing on the rail to be ground come to bear on this rail.
  • the thrust produced by the jack 48 is adjustable and much greater than the pressure of the grinding wheels on the rail.
  • a drawbar 53 which extends transversely is still articulated at one end to the pivoting beam 50 and at the other end to the chassis. This bar prevents the dot articulation 47 to move transversely when the jack 48 presses the roller 43 against the rail, and thus a torsion of the beam 50.
  • the machine according to the invention further comprises a device for turning the machine over to allow the grinding of the other rail of the railway track, although the grinding units are only located on one side of the machine.
  • This reversal is done using a column 55 which is mounted vertically movable in the center of the chassis.
  • This column carries at its lower end a support plate 56 by which it bears on the ground to lift the machine so that it can be turned over.
  • the machine comprises a cockpit 57 which is located on the side of the machine which is opposite to the side comprising the grinding units, which allows the operator to exercise direct and permanent visual control of the work of grinding performed by the machine.
  • the four wheels 2 are rotated by a central motor 58 by means of transmission chains and cardan shafts.

Abstract

The invention relates to a machine for grinding the rails of a railway track, advantageously a self-propelled machine. The machine is of the type comprising a chassis (4) supported by flanged wheels (2) bearing on the rails (3) of the railway track, at least one grinding unit (6) provided with a grinder (7) and with a device for driving the grinder in rotation, means for lowering and raising the grinding unit relative to the rail, means for pivoting the unit around the rail (3) to be ground, in a plane perpendicular to the axis of the latter, and means for displacing the unit laterally, forming a means for avoiding obstacles, as well as a device for supporting the grinding unit on the chassis. The machine is characterised in that the means for lowering and raising, the means for pivoting and the means for laterally displacing the grinding unit (6) are incorporated with the said support, so as to form a compact subunit (22) with relatively small dimensions. The invention can be used for treating the rails of a railway track. <IMAGE>

Description

L'invention concerne une machine de meulage des rails d'une voie ferrée, avantageusement automotrice, du type comprenant un châssis supporté par des roues à boudin prenant appui sur les rails de la voie ferrée, au moins une unité de meulage pourvue d'une meule et d'un dispositif d'entraînement en rotation de la meule, des moyens d'abaissement et de levage de l'unité par rapport au rail, des moyens de pivotement de l'unité autour du rail à meuler, dans un plan perpendiculaire à l'axe de celui-ci et des moyens de déplacement latéral, de l'unité, formant moyen d'évitement d'obstacles, ainsi qu'un dispositif de support de l'unité sur le châssis.The invention relates to a machine for grinding rails of a railway track, advantageously self-propelled, of the type comprising a chassis supported by flanged wheels bearing on the rails of the railway track, at least one grinding unit provided with a grinding wheel and a device for rotating the grinding wheel, means for lowering and lifting the unit relative to the rail, means for pivoting the unit around the rail to be ground, in a perpendicular plane to the axis thereof and means for lateral displacement of the unit, forming obstacle avoidance means, as well as a device for supporting the unit on the chassis.

On connaît déjà des machines de meulage de ce type, mais celles-ci sont réalisées soit sous forme de trains de meulage pourvus d'un grand nombre de modules de meulage et donc d'une longueur importante, soit sous forme de meuleuses manuelles relativement petites. Ces machines de meulage présentent l'inconvénient qu'ils ne permettent pas la rectification et tout particulièrement le reprofilage de courbes, aiguillages, tronçons de voie à usure irrégulière, voies éclissées ou encombrées d'appareils ou longueurs de quelques centaines de mètres, à un niveau de productivité acceptable. Les trains de meulage s'avèrent trop gros à cette fin, tandis que les meuleuses manuelles sont trop petites.Grinding machines of this type are already known, but these are produced either in the form of grinding trains provided with a large number of grinding modules and therefore of considerable length, or in the form of relatively small manual grinders . These grinding machines have the disadvantage that they do not allow the rectification and very particularly the reprofiling of curves, switches, sections of track with irregular wear, spliced or crowded tracks of apparatuses or lengths of a few hundred meters, at a acceptable level of productivity. The grinding wheels are too big for this purpose, while the manual grinders are too small.

La présente invention a pour but de proposer une machine de meulage qui ne présente pas les inconvénients des machines de meulage connues, qui viennent d'être énoncés.The present invention aims to provide a grinding machine which does not have the drawbacks of known grinding machines, which have just been stated.

Pour atteindre ce but, la machine de meulage selon l'invention est caractérisée en ce que les moyens d'abaissement et de levage, les moyens de pivotement et les moyens de déplacement latéral d'une unité de meulage sont incorporés audit support, en formant un bloc compact de relativement faibles dimensions.To achieve this object, the grinding machine according to the invention is characterized in that the lowering and lifting means, the pivoting means and the lateral displacement means of a grinding unit are incorporated into said support, forming a compact block of relatively small dimensions.

Selon une caractéristique avantageuse de l'invention, le support de l'unité de meulage comprend un organe formant pivot, solidaire du châssis et sur lequel est montée pivotante autour d'un axe parallèle à l'axe longitudinal de la machine, une première partie dudit bloc compact sur laquelle est montée pivotante autour d'un axe perpendiculaire au pivot une seconde partie portant l'unité de meulage, de façon mobile perpendiculairement audit pivot.According to an advantageous characteristic of the invention, the support of the grinding unit comprises a pivot member, integral with the chassis and on which is pivotally mounted about an axis parallel to the longitudinal axis of the machine, a first part of said compact block on which is pivotally mounted about an axis perpendicular to the pivot a second part carrying the grinding unit, movably perpendicular to said pivot.

Selon une autre caractéristique de l'invention, la machine est équipée d'un dispositif d'alignement entre les unités de meulage et le rail à meuler, qui comporte des galets et des moyens pour plaquer ces galets sur le rail opposé au rail à meuler, pour produire un décalage latéral de la machine jusqu'à ce que les boudins des roues prenant appui sur le rail à meuler viennent en appui sur celui-ci.According to another characteristic of the invention, the machine is equipped with an alignment device between the grinding units and the rail to be ground, which comprises rollers and means for pressing these rollers on the rail opposite to the rail to be ground , to produce a lateral offset of the machine until the flanges of the wheels bearing on the rail to be ground come to bear on the latter.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lesquels.

  • La figure 1 est une vue latérale, schématique, d'une machine de meulage selon l'invention.
  • La figure 2 est une vue de dessus de la machine selon la figure 1.
  • La figure 3 est une vue en direction de l'axe de la voie ferrée, de la machine selon la figure 1.
  • La figure 4 est une vue en coupe d'un groupe d'unités de meulage indiqué en IV sur la figure 1.
  • La figure 5 est une vue en coupe selon la ligne V-V de la figure 4, d'une unité de meulage.
  • La figure 6 est une vue schématique, simplifiée, dans l'axe longitudinal de la machine, du dispositif de positionnement d'une unité de meulage et du dispositif d'alignement entre les unités de meulage et le rail à meuler;
The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a mode of the invention and in which.
  • Figure 1 is a schematic side view of a grinding machine according to the invention.
  • Figure 2 is a top view of the machine according to Figure 1.
  • FIG. 3 is a view in the direction of the axis of the railway, of the machine according to FIG. 1.
  • FIG. 4 is a sectional view of a group of grinding units indicated in IV in FIG. 1.
  • Figure 5 is a sectional view along line VV of Figure 4, of a grinding unit.
  • Figure 6 is a schematic simplified view, in the longitudinal axis of the machine, of the positioning device of a grinding unit and of the alignment device between the grinding units and the rail to be ground;

Selon les figures 1 à 3, la machine de meulage selon l'invention comprend deux essieux motorisés 1 pourvus chacun de deux roues à boudin 2 qui prennent appui sur les deux rails 3 d'une voie ferrée et sur lesquels repose un châssis 4. Sur ce châssis sont montés les différents dispositifs de la machine.According to FIGS. 1 to 3, the grinding machine according to the invention comprises two motorized axles 1 each provided with two flanged wheels 2 which bear on the two rails 3 of a railway track and on which a chassis 4 rests. this chassis are mounted the various devices of the machine.

La machine est équipée de quatre unités de meulage 6 qui sont groupées par deux. Chaque unité comprend une meule 7 du type boisseau et un motor 8 d'entraînement en rotation de la meule, par l'intermédiaire de moyens enfermés dans un carter 9. Le moteur 8 est de préférence un moteur hydraulique. Les quatre unités de meulage travaillent à plat côte à côte sur le même rail et sont donc alignées au niveau d'un bord latéral de la machine entre les deux roues à boudin correspondantes 2.The machine is equipped with four grinding units 6 which are grouped in pairs. Each unit comprises a grinding wheel 7 of the plug type and a motor 8 for driving the grinding wheel in rotation, by means of means enclosed in a casing 9. The motor 8 is preferably a hydraulic motor. The four grinding units work flat side by side on the same rail and are therefore aligned at a lateral edge of the machine between the two corresponding flanged wheels 2.

Chaque groupe d'unités de meulage 6 est fixé sur un pied commun 10 solidaire d'une poutre longitudinale 11 du châssis 4, par l'intermédiaire d'un dispositif de positionnement 12 de chaque unité de meulage, par rapport au rail. Chaque dispositif de positionnement est réalisé sous forme d'un ensemble ou bloc compact d'un faible encombrement.Each group of grinding units 6 is fixed to a common base 10 secured to a longitudinal beam 11 of the chassis 4, by means of a positioning device 12 of each grinding unit, relative to the rail. Each positioning device is produced in the form of a compact assembly or block of small size.

Le dispositif de positionnement comprend essentiellement une colonne cylindrique 13 à section transversale circulaire, qui est pourvue d'une partie formant base 14 réalisée sous forme d'un manchon dont l'axe s'étend perpendiculairement à l'axe de la colonne et qui est monté rotatif sur un organe en forme de pivot 15, par l'intermédiaire de roulements à billes indiqués en 16. Ce pivot est fixé sur le pied 10 de façon à s'étendre parallèlement au rail 3. On constate que le pied 10 porte un deuxième pivot 15 qui est axialement aligné avec le premier mais orienté dans la direction opposée pour recevoir le dispositif de positionnement de la deuxième unité de meulage du groupe de meulage.The positioning device essentially comprises a cylindrical column 13 of circular cross section, which is provided with a base portion 14 made in the form of a sleeve whose axis extends perpendicular to the axis of the column and which is rotatably mounted on a pivot-shaped member 15, by means of ball bearings indicated at 16. This pivot is fixed on the foot 10 so as to extend parallel to the rail 3. It can be seen that the foot 10 carries a second pivot 15 which is axially aligned with the first but oriented in the opposite direction to receive the positioning device of the second grinding unit of the grinding group.

Sur la colonne 13 est montée axialement mobile, à l'aide d'une partie formant palier 17, une pièce 18 qui porte l'unité de meulage. Cette pièce est configurée de façon à constituer le corps d'un vérin hydraulique à double effet dont la tige de piston 19 s'étend parallèlement à la colonne 13 et est fixée à son extrémité libre à un support 20 en forme de chapeau qui coiffe l'extrémité supérieure libre de la colonne et est monté rotatif autour de cette extrémité. La référence 21 indique l'espace interne du vérin.On the column 13 is mounted axially movable, using a portion forming a bearing 17, a part 18 which carries the grinding unit. This part is configured so as to constitute the body of a double-acting hydraulic cylinder whose piston rod 19 extends parallel to the column 13 and is fixed at its free end to a support 20 in the form of a cap which covers the free upper end of the column and is rotatably mounted around this end. Reference 21 indicates the internal space of the jack.

Comme on le voit clairement sur la figure 4, le carter 9 de l'unité de meulage 6, la pièce de support 18 et la partie de palier 17 sont réalisés sous forme d'un seul bloc 22 en constituant des parties parallèles les unes des autres, qui sont juxtaposées dans un même plan.As can be clearly seen in FIG. 4, the casing 9 of the grinding unit 6, the support part 18 and the bearing part 17 are produced in the form of a single block 22 by constituting parallel parts one of the others, which are juxtaposed in the same plane.

L'ensemble en forme de bloc est équipé de moyens permettant son pivotement autour de l'axe de la colonne. A cette fin, deux lamages 23 sont pratiqués dans la surface cylindrique périphérique de la colonne 13, qui s'étendent parallèlement à l'axe de la colonne, sur pratiquement toute la longueur de celle-ci. Les deux lamages sont situés symétriquement par rapport au plan diamétral vertical P-P, parallèle au rail, de la colonne, du côté de celle-ci, qui est orientée vers l'unité de meulage. Dans chaque lamage s'engage, de façon axialement coulissante, une pièce de frottement 24. Ces pièces ont une longueur légèrement inférieure de la hauteur de la partie de palier 17 et sont configurées de façon à remplir entièrement la portion de lamage qu'elles occupent, afin d'assurer la continuité de la surface cylindrique de la colonne. Quatre encoches 26 sont pratiquées dans chaque lamage à des emplacements régulièrement décalés dans la direction axiale de la colonne.The block-shaped assembly is equipped with means allowing it to pivot about the axis of the column. To this end, two counterbores 23 are formed in the peripheral cylindrical surface of the column 13, which extend parallel to the axis of the column, over practically the entire length of the latter. The two counterbores are located symmetrically with respect to the vertical diametral plane P-P, parallel to the rail, of the column, on the side thereof, which is oriented towards the grinding unit. In each counterbore engages, in an axially sliding manner, a friction piece 24. These pieces have a length slightly less than the height of the bearing portion 17 and are configured so as to completely fill the countersink portion which they occupy. , in order to ensure the continuity of the cylindrical surface of the column. Four notches 26 are formed in each counterbore at locations regularly offset in the axial direction of the column.

Les organes de commande de la rotation du bloc de positionnement 22 autour de la colonne sont formés par des vérins hydrauliques 27 qui sont incorporés au bloc, chacun en face d'une encoche 26 de façon que dans chaque encoche s'engage transversalement à l'axe de la colonne, l'extrémité d'une tige de piston 28 d'un vérin. On constate qu'un fourreau 29 est radialement interposé entre les faces cylindriques de la colonne et du palier 17. Au niveau de chaque encoche, le fourreau présente une fenêtre 30 permettant le passage d'une tige de piston 28, en tenant compte de l'angle de battement du pivotement du bloc de positionnement de chaque côté du plan P-P. Chaque vérin est un vérin du type à effet simple et la rotation du corps de positionnement se fait par actionnement du vérin approprié en fonction de la direction de rotation. Ces vérins permettent un décalage latéral de la meule de l'unité de meulage par rapport au rail, de -50 mm à +50 mm, pour n'importe quelle position angulaire de la meule autour du rail.The members for controlling the rotation of the positioning block 22 around the column are formed by hydraulic jacks 27 which are incorporated in the block, each facing a notch 26 so that in each notch engages transversely to the axis of the column, the end of a piston rod 28 of a cylinder. It can be seen that a sleeve 29 is radially interposed between the cylindrical faces of the column and of the bearing 17. At each notch, the sleeve has a window 30 allowing the passage of a piston rod 28, taking into account the beating angle of the pivoting of the positioning block on each side of the PP plane. Each cylinder is a single-acting type cylinder and the positioning body is rotated by actuating the appropriate cylinder depending on the direction of rotation. These jacks allow a lateral offset of the grinding wheel of the grinding unit from the rail, from -50 mm to +50 mm, for any angular position of the grinding wheel around the rail.

On constate encore que la partie de palier 17 comporte à chaque extrémité un joint d'étanchéité indiqué en 31 qui est interposé entre le palier et la colonne, dans une zone où la face périphérique de la colonne est complètement cylindrique, c'est-à-dire au-dessus et en dessous de la série des encoches 24. Il est encore à noter que la tige 19 du vérin 18 est entourée d'un soufflet d'étanchéité 32 et que des soufflets 33 et 34 sont prévus autour de la colonne, respectivement, au-dessus et en dessous du palier 17.It can also be seen that the bearing part 17 has at each end a seal indicated at 31 which is interposed between the bearing and the column, in an area where the peripheral face of the column is completely cylindrical, that is to say -to say above and below the series of notches 24. It should also be noted that the rod 19 of the jack 18 is surrounded by a sealing bellows 32 and that bellows 33 and 34 are provided around the column , respectively, above and below the bearing 17.

Le pivotement du bloc de positionnement par rapport au rail, c'est-à-dire autour du pivot 15 s'effectue à l'aide d'un vérin hydraulique 35 dont la tige 36 est fixée au manchon 14 du bloc, par l'intermédiaire d'une pièce d'attache 37, tandis que le corps 38 du vérin est articulé en 39 à une console 40 solidaire du châssis 4. La meule peut ainsi être amenée à pivoter autour du rail selon un angle de -30 à +90°+ ou de -90 à +30°.The pivoting of the positioning block relative to the rail, that is to say around the pivot 15 is carried out using a hydraulic cylinder 35 whose rod 36 is fixed to the sleeve 14 of the block, by the through an attachment piece 37, while the body 38 of the jack is articulated at 39 to a console 40 secured to the chassis 4. The grinding wheel can thus be made to pivot around the rail at an angle of -30 to +90 ° + or from -90 to + 30 °.

Pour assurer une bonne assise de la machine sur la voie ferrée, les deux roues à boudin 2 situées du côté du rail à meuler sont montées fixes sur le châssis tandis que les deux roues qui prennent appui sur l'autre rail montées sont chacune sur une poutre 50 qui s'étend parallèlement à l'axe longitudinal de la machine et est articulée au niveau de la ligne médiane transversale au châssis 4 de façon à pouvoir pivoter autour d'un axe 51 parallèle à cette ligne. Un ressort 52 est interposé entre chaque poutre et le châssis 4, comme cela ressort notamment de la figure 6.To ensure a good seat of the machine on the railway track, the two flanged wheels 2 located on the side of the rail to be ground are mounted fixed on the chassis while the two wheels which are supported on the other mounted rail are each on a beam 50 which extends parallel to the longitudinal axis of the machine and is articulated at the center line transverse to the chassis 4 so as to be able to pivot around an axis 51 parallel to this line. A spring 52 is interposed between each beam and the chassis 4, as is shown in particular in FIG. 6.

La machine selon l'invention comprend encore deux dispositifs 43 qui assurent l'alignement entre les unités de meulage 6 et le rail à meuler 3 et dont chacun est associé à un essieu 1. Chaque dispositif 43 comprend un galet 44 qui est monté rotatif dans un palier 45 fixé à l'extrémité d'un bras 46 qui s'étend perpendiculairement à l'axe du galet et dont l'extrémité libre est articulée en 47 à un bras transversal horizontal 49 qui est fixé par son autre extrémité sur la face supérieure de la poutre pivotante 50. Un vérin hydraulique sensiblement horizontal 48 est interposé entre le bras 46 et le châssis pour assurer le pivotement du bras entre une position dans laquelle le galet 44 est plaqué sur le rail opposé au rail à meuler, sous l'effet du vérin 48. Le placage du galet décale la machine latéralement jusqu'à ce que les boudins des roues 2 en appui sur le rail à meuler viennent en appui sur ce rail. La poussée produite par le vérin 48 est réglable et largement supérieure à la pression des meules sur le rail. Une barre de traction 53 qui s'étend transversalement est encore articulée à une extrémité à la poutre pivotante 50 et à l'autre extrémité au châssis. Cette barre empêche le point d'articulation 47 de se déplacer transversalement lorsque le vérin 48 plaque le galet 43 contre le rail, et ainsi une torsion de la poutre 50.The machine according to the invention further comprises two devices 43 which ensure alignment between the grinding units 6 and the grinding rail 3 and each of which is associated with an axle 1. Each device 43 comprises a roller 44 which is rotatably mounted in a bearing 45 fixed to the end of an arm 46 which extends perpendicular to the axis of the roller and whose free end is articulated at 47 to a horizontal transverse arm 49 which is fixed by its other end to the face upper of the pivoting beam 50. A substantially horizontal hydraulic cylinder 48 is interposed between the arm 46 and the chassis to ensure the pivoting of the arm between a position in which the roller 44 is pressed against the rail opposite the rail to be ground, under the effect of the jack 48. Plating the roller shifts the machine laterally until the flanges of the wheels 2 bearing on the rail to be ground come to bear on this rail. The thrust produced by the jack 48 is adjustable and much greater than the pressure of the grinding wheels on the rail. A drawbar 53 which extends transversely is still articulated at one end to the pivoting beam 50 and at the other end to the chassis. This bar prevents the dot articulation 47 to move transversely when the jack 48 presses the roller 43 against the rail, and thus a torsion of the beam 50.

La machine selon l'invention comprend en outre un dispositif de retournement de la machine pour permettre le meulage de l'autre rail de la voie ferrée, bien que les unités de meulage ne se trouvent que sur un côté de la machine. Ce retournement se fait à l'aide d'une colonne 55 qui est montée verticalement mobile au centre du châssis. Cette colonne porte à son extrémité inférieure un plateau d'appui 56 par lequel elle prend appui sur le sol pour soulever la machine de façon à ce que celle-ci puisse être retournée. On constate encore que la machine comporte un poste de pilotage 57 qui se trouve du côté de la machine qui est opposée au côté comportant les unités de meulage, ce qui permet à l'opérateur d'exercer un contrôle visuel direct et permanent du travail de meulage exécuté par la machine.The machine according to the invention further comprises a device for turning the machine over to allow the grinding of the other rail of the railway track, although the grinding units are only located on one side of the machine. This reversal is done using a column 55 which is mounted vertically movable in the center of the chassis. This column carries at its lower end a support plate 56 by which it bears on the ground to lift the machine so that it can be turned over. It can also be seen that the machine comprises a cockpit 57 which is located on the side of the machine which is opposite to the side comprising the grinding units, which allows the operator to exercise direct and permanent visual control of the work of grinding performed by the machine.

Il est encore à noter que les quatre roues 2 sont entraînés en rotation par un moteur central 58 par l'intermédiaire de chaînes de transmission et d'arbres de transmission à cardan.It should also be noted that the four wheels 2 are rotated by a central motor 58 by means of transmission chains and cardan shafts.

Concernant le fonctionnement de la machine de meulage selon l'invention, celui-ci ressort déjà de la description qui vient d'être faite. Ainsi, pour positionner les meules correctement par rapport au rail à meuler, l'opérateur choisira l'inclinaison de la meule par rapport au rail à l'aide du vérin hydraulique 35. L'abaissement et la levée de la meule se fera à l'aide du vérin 18. S'il est nécessaire de déplacer latéralement la meule, par rapport au rail, par exemple pour éviter un obstacle, l'opérateur actionnera de façon appropriée, les vérins 27 qui sont incorporés au bloc de positionnement 22 de l'unité de meulage 6.Regarding the operation of the grinding machine according to the invention, this already emerges from the description which has just been made. Thus, to position the grinding wheels correctly relative to the rail to be ground, the operator will choose the inclination of the grinding wheel relative to the rail using the hydraulic cylinder 35. The lowering and lifting of the grinding wheel will be done at with the jack 18. If it is necessary to move the grinding wheel laterally, in relation to the rail, for example to avoid an obstacle, the operator will actuate suitably, the jacks 27 which are incorporated in the positioning block 22 of the grinding unit 6.

Il ressort de la description de la machine de meulage selon l'invention, qui vient d'être faite, que celle-ci est parfaitement adaptée aux travaux de rectification et de reprofilage de tronçons de voie ferrée de tous genres de 50 à 500 mètres de long. La performance excellente de cette machine est basée sur les principes fondamentaux :

  • l'obtention d'une concentration maximum de l'opérateur sur le travail et des meules et le rail à meuler en opérant que sur un rail à la fois avec seulement deux meules, sous son contrôle visuel direct et permanent ;
  • les unités de meulage sont compactes, extrêmement robustes et maniables, avec notamment les possibilités de pivotement de -30 à +90°, d'un décalage tangentiel de -50 mm à + 50 mm et des réglages multiples de hauteur.
It appears from the description of the grinding machine according to the invention, which has just been made, that it is perfectly suited to the work of rectification and reprofiling of sections of railway track of all kinds from 50 to 500 meters long. The excellent performance of this machine is based on the fundamental principles:
  • obtaining a maximum operator concentration on the work and the grinding wheels and the rail to be ground by operating only on one rail at a time with only two grinding wheels, under his direct and permanent visual control;
  • the grinding units are compact, extremely robust and handy, with in particular the possibilities of pivoting from -30 to + 90 °, a tangential offset from -50 mm to + 50 mm and multiple height adjustments.

Claims (15)

Machine de meulage des rails d'une voie ferrée, avantageusement automotrice, du type comprenant un châssis supporté par des roues à boudin prenant appui sur les rails de la voie ferrée, au moins une unité de meulage pourvue d'une meule et d'un dispositif d'entraînement en rotation de la meule, des moyens d'abaissement et de levage de l'unité de meulage par rapport au rail, des moyens de pivotement de l'unité autour du rail à meuler, dans un plan perpendiculaire à l'axe de celui-ci, et des moyens de déplacement latéral de l'unité, formant moyen d'évitement d'obstacles, ainsi qu'un dispositif de support de l'unité de meulage sur le châssis, caractérisée en ce que le dispositif de support de l'unité de meulage (6) comprend un organe formant pivot (15), solidaire du châssis (4) et s'étendant parallèlement au rail à meuler, et un élément (13) monté pivotant autour de ce pivot (15), et en ce l'unité de meulage (26) est incorporé à un bloc compact (22) qui est monté sur ledit élément (13), pivotant autour de l'axe de cet élément et axialement mobile sur celui-ci, de façon que l'unité puisse exécuter sélectivement lesdits déplacements latéraux, d'abaissement et de levage et ledit pivotement.Machine for grinding rails of a railway track, advantageously self-propelled, of the type comprising a chassis supported by flanged wheels bearing on the rails of the railway track, at least one grinding unit provided with a grinding wheel and a device for driving the grinding wheel in rotation, means for lowering and lifting the grinding unit relative to the rail, means for pivoting the unit around the rail to be ground, in a plane perpendicular to the axis thereof, and means for lateral displacement of the unit, forming obstacle avoidance means, as well as a device for supporting the grinding unit on the chassis, characterized in that the device for support of the grinding unit (6) comprises a pivot member (15), integral with the chassis (4) and extending parallel to the rail to be ground, and an element (13) mounted pivoting around this pivot (15) , and in this the grinding unit (26) is incorporated in a compact block (22) which is mo nté on said element (13), pivoting about the axis of this element and axially movable thereon, so that the unit can selectively execute said lateral movements, lowering and lifting and said pivoting. Machine selon la revendication 1, caractérisé en ce que les moyens de commande de l'abaissement et de levage et de déplacement latéral de l'unité de meulage sont logés dans le bloc précité (22).Machine according to claim 1, characterized in that the means for controlling the lowering and lifting and lateral movement of the grinding unit are housed in the aforementioned block (22). Machine selon l'une des revendications 1 ou 2, caractérisée en ce que les moyens de pivotement de l'élément (13) autour du pivot (15) comprennent un vérin (35) monté entre cet élément (13) et le châssis (4) de la machine de façon à pouvoir produire une force de pivotement perpendiculaire à l'axe de l'élément (13).Machine according to one of claims 1 or 2, characterized in that the means for pivoting the element (13) around the pivot (15) comprise a jack (35) mounted between this element (13) and the chassis (4) of the machine so as to be able to produce a pivoting force perpendicular to the axis of the element (13). Machine selon l'une des revendications 1 à 3, caractérisée en ce que l'élément pivotant précité (13) est réalisé sous forme d'une colonne dont la base est pourvue d'une partie formant manchon (14) monté pivotant sur le pivot précité (15).Machine according to one of claims 1 to 3, characterized in that the above-mentioned pivoting element (13) is produced in the form of a column, the base of which is provided with a sleeve part (14) pivotally mounted on the pivot. cited above (15). Machine selon l'une des revendications précédentes, caractérisée en ce que les moyens de commande de l'abaissement et de levage comprennent un vérin avantageusement hydraulique dont la tige (19) est fixée à une extrémité de l'élément pivotant (13), tandis que son corps constitue une partie (18) du bloc précité (22).Machine according to one of the preceding claims, characterized in that the lowering and lifting control means comprise an advantageously hydraulic jack whose rod (19) is fixed to one end of the pivoting element (13), while that his body constitutes a part (18) of the aforementioned block (22). Machine selon la revendication 5, caractérisée en ce que l'extrémité libre de la tige (19) est fixée à un chapeau monté rotatif sur l'extrémité libre de l'élément (13).Machine according to claim 5, characterized in that the free end of the rod (19) is fixed to a cap mounted to rotate on the free end of the element (13). Machine selon l'une des revendications précédentes, caractérisée en ce que les moyens de commande du pivotement du bloc (22) autour de l'élément pivotant (13) sont formés par des vérins avantageusement hydrauliques (27) qui sont montés dans le bloc (22) et sont adaptés pour exercer une force de poussée sur l'élément pivotant (13), à un emplacement excentré de l'axe de celui-ci, perpendiculairement à cet axe, les moyens de pivotement étant adaptés pour assurer la rotation dans les deux sens.Machine according to one of the preceding claims, characterized in that the means for controlling the pivoting of the block (22) around the pivoting element (13) are formed by advantageously hydraulic jacks (27) which are mounted in the block ( 22) and are adapted to exert a pushing force on the pivoting element (13), at an eccentric location of the axis thereof, perpendicular to this axis, the pivoting means being adapted to ensure rotation in the both directions. Machine selon la revendication 7, caractérisée en ce que deux lamages axiaux (23) sont pratiqués dans la périphérie de la colonne (13) dans lesquels s'engagent les tiges de piston (28) des vérins (27) en vue de réaliser l'attaque excentrée d'entraînement en rotation autour de la colonne.Machine according to claim 7, characterized in that two axial countersinks (23) are formed in the periphery of the column (13) in which the piston rods (28) of the jacks (27) engage in order to produce the eccentric drive attack in rotation around the column. Machine selon la revendication 8, caractérisée en ce qu'une pièce (24) est montée coulissante dans chaque lamage axial (23) et les tiges de pivotement (28) du vérin (27) prennent appui sur les pièces (24).Machine according to claim 8, characterized in that a part (24) is slidably mounted in each axial counterbore (23) and the pivot rods (28) of the jack (27) bear on the parts (24). Machine selon l'une des revendications précédentes, caractérisée en ce que la machine comprend une pluralité d'unités de meulage (6) avantageusement au nombre de quatre, situées au niveau d'un rail de la machine, qui sont fixées par paire dos à dos sur une pièce de support commun (10) solidaire du châssis (4) de la machine, entre les deux roues (2) associées au rail à meuler.Machine according to one of the preceding claims, characterized in that the machine comprises a plurality of grinding units (6) advantageously four in number, located at the level of a rail of the machine, which are fixed in pairs back to back. back on a common support piece (10) secured to the chassis (4) of the machine, between the two wheels (2) associated with the rail to be ground. Machine selon l'une des revendications précédentes, caractérisée en ce que la machine comporte un dispositif de retournement (55, 56) de la machine pour amener les unités de meulage (6) en position de meulage de l'autre rail (3).Machine according to one of the preceding claims, characterized in that the machine comprises a turning device (55, 56) of the machine for bringing the grinding units (6) to the grinding position of the other rail (3). Machine selon la revendication 11, caractérisée en ce que le dispositif de retournement (55) comprend une colonne montée verticalement mobile sur le châssis (4), avantageusement au centre de celui-ci, entre une position de repos et une position de retournement de la machine dans laquelle la colonne prend appui sur le sol par une extrémité pour soulever la machine de façon qu'elle puisse être retournée.Machine according to claim 11, characterized in that the turning device (55) comprises a column mounted vertically movable on the chassis (4), advantageously in the center thereof, between a rest position and a turning position of the machine in which the column is supported on the ground by one end to lift the machine so that it can be turned over. Machine selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend des moyens (43) adaptés pour assurer l'alignement entre les unités de meulage (6) et le rail à meuler (3), par décalage latéral de la machine jusqu'à ce que les boudins des roues (2) en appui sur le rail à meuler viennent en appui sur ce rail.Machine according to one of the preceding claims, characterized in that it comprises means (43) adapted to ensure alignment between the grinding units (6) and the rail to be ground (3), by lateral offset of the machine until the flanges of the wheels (2) bearing on the rail to be ground come to bear on this rail. Machine selon la revendication 13, caractérisée en ce que les moyens d'alignement (43) comprennent deux dispositifs d'alignement, chacun associé à un essieu (1) et comprenant un galet (44) qui est latéralement déplaçable contre le rail (3) opposé au rail à meuler sous l'effet de moyens de commande, tels qu'un vérin hydraulique (48).Machine according to claim 13, characterized in that the alignment means (43) comprise two alignment devices, each associated with an axle (1) and comprising a roller (44) which is laterally displaceable against the rail (3) opposite the rail to be ground under the effect of control means, such as a hydraulic cylinder (48). Machine selon l'une des revendications précédentes, caractérisée en ce qu'elle comprend un poste de pilotage (57) disposé de façon que l'opérateur de la machine puisse exercer un contrôle visuel du travail de meulage exercé par la machine.Machine according to one of the preceding claims, characterized in that it comprises a cockpit (57) arranged so that the operator of the machine can exert a visual control of the grinding work exerted by the machine.
EP94402679A 1993-11-24 1994-11-23 Rail grinder Ceased EP0657582A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9314059A FR2712901B1 (en) 1993-11-24 1993-11-24 Machine for grinding rails of a railway track.
FR9314059 1993-11-24

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EP0657582A1 true EP0657582A1 (en) 1995-06-14

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EP94402679A Ceased EP0657582A1 (en) 1993-11-24 1994-11-23 Rail grinder

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JP (1) JPH07252803A (en)
FR (1) FR2712901B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1757733A1 (en) * 2005-08-24 2007-02-28 VolkerRail Nederland BV Locally grinding a rail

Citations (3)

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Publication number Priority date Publication date Assignee Title
FR2333897A1 (en) * 1975-12-01 1977-07-01 Plasser Bahnbaumasch Franz MOBILE TRACK POLISHING MACHINE
EP0154777A1 (en) * 1984-02-06 1985-09-18 Speno International S.A. Device for the on-track rectification of the rail head of at least one rail of a railroad track
CH678341A5 (en) * 1989-03-02 1991-08-30 Speno International

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Publication number Priority date Publication date Assignee Title
CH467132A (en) * 1968-04-05 1969-01-15 Stiefel Albert Fixing device for grinding wheels
FR2357333A1 (en) * 1976-07-07 1978-02-03 Buisson Roger Grinder-holder for rotary stone polishing power tool - has pivoting jaws which grip dovetail faces of grinder as conical nut advances
FR2422858A1 (en) * 1978-04-11 1979-11-09 Essilor Int HUB, IN PARTICULAR FOR ROTARY TOOL, ESPECIALLY GRIND

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2333897A1 (en) * 1975-12-01 1977-07-01 Plasser Bahnbaumasch Franz MOBILE TRACK POLISHING MACHINE
EP0154777A1 (en) * 1984-02-06 1985-09-18 Speno International S.A. Device for the on-track rectification of the rail head of at least one rail of a railroad track
CH678341A5 (en) * 1989-03-02 1991-08-30 Speno International

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1757733A1 (en) * 2005-08-24 2007-02-28 VolkerRail Nederland BV Locally grinding a rail

Also Published As

Publication number Publication date
FR2712901A1 (en) 1995-06-02
FR2712901B1 (en) 1996-05-31
JPH07252803A (en) 1995-10-03

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