EP0668397A1 - Device for reshaping railway rails - Google Patents

Device for reshaping railway rails Download PDF

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Publication number
EP0668397A1
EP0668397A1 EP94119363A EP94119363A EP0668397A1 EP 0668397 A1 EP0668397 A1 EP 0668397A1 EP 94119363 A EP94119363 A EP 94119363A EP 94119363 A EP94119363 A EP 94119363A EP 0668397 A1 EP0668397 A1 EP 0668397A1
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EP
European Patent Office
Prior art keywords
rail
milling
installation according
support
units
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.)
Granted
Application number
EP94119363A
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German (de)
French (fr)
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EP0668397B1 (en
Inventor
Jean-Pierre Jaeggi
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
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
    • E01B31/02—Working rail or other metal track components on the spot
    • E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306216—Randomly manipulated, work supported, or work following device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/501312—Randomly manipulated, work supported, or work following device
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/50—Planing
    • Y10T409/501476—Means to remove flash or burr
    • Y10T409/50164—Elongated work

Definitions

  • the present invention relates to a reprofiling installation of railway rails working on track.
  • the track rails not only have damaged profiles but also longitudinal undulations whose amplitudes vary.
  • Patent CH 680,672 describes a process making it possible to optimally program in advance the reprofiling operations to be carried out on a given section. Thanks to this process, it is possible to optimize maintenance operations in order to reduce the occupation time of the tracks.
  • the grinding or polishing of the rails may require several passes on the same section, even using machines with multiple grinding units . This is hardly compatible with the time that can be allocated to reprofiling work depending on the occupation rate of the railway tracks. By using cutters rather than grinding wheels, it is possible to remove more material and therefore to work faster.
  • the milling of rails in the workshop is known and described for example in French patent 2,659,584. To obtain precise reprofiling, when milling or grinding on the track, it must be ensured that the grinding wheel or milling cutter is guided longitudinally and transversely. In addition, the result is influenced by the guide base which carries the tool.
  • the object of the present invention is to overcome the drawbacks mentioned above.
  • the licensee proposes a reprofiling installation of at least one rail of a railroad track capable of removing a large amount of metal and eliminating both long and short ripples, while ensuring a perfect finish of the reprofiled rails.
  • Another object of the invention is to increase the speed of the rail reprofiling work.
  • the reprofiling installation must allow metal residues resulting from the reprofiling process to be removed and treated.
  • the subject of the present invention is a reprofiling installation on the surface of the head of at least one rail of a railroad track which is distinguished by the characteristics listed in claim 1.
  • the wagon for milling and storing shavings illustrated in FIG. 1 constitutes the head element of the rail reprofiling installation.
  • This wagon comprises, located at the front of the milling device, a measuring device 1 which makes it possible to evaluate the deformations of the rail to be treated.
  • the milling device is fixed to the chassis 2 of the rail vehicle 3 using jacks 4,5,6 which allow the milling device to be held in the working position and to be raised.
  • a drawbar 7 connects the chassis 2 to the frame 9 of the milling device. This drawbar 7 allows the drive along the path of the milling device.
  • the milling device comprises two frames 8, 9 hinged together. These frames 8, 9 rest at three points on each rail by means of support and guide units 10, 11, 12.
  • the frames 8 and 9 have a different length, the frame 8 carrying the milling unit 13 being longer than the frame 9 which carries the milling unit 14.
  • These frames 8, 9 each constitute a guide base for the milling unit 13,14 which they carry.
  • the milling unit 13 carried by the longest frame 8 will eliminate long ripples from the rail, while the milling unit 14 carried by the frame 9 will eliminate short ripples.
  • FIG. 1 also illustrates rail heating devices 15,16 located at the front of each of the two milling units 13,14 as well as a rail cooling device 17 located at the rear of the milling device.
  • the rail heaters are mounted on the frames 8.9 respectively.
  • the cooling unit 17 is towed by the second frame 9 using a drawbar.
  • the measurement unit 1 of the rail deformations makes it possible to determine the depth of cut at which it is desired to make the cutters work, as well as the power to be supplied to the heating units for a given forward speed.
  • FIG. 2 illustrates schematically and in more detail an embodiment of the milling device.
  • This device comprises a first frame 8 connected via two cylinders 4,5 to the chassis 2 of the vehicle. These cylinders 4,5 hold the frame 8 under the chassis 2 and make it possible to raise it when walking high, for example. In operation, these cylinders 4,5 make it possible to apply the milling unit against the rail with a determined force.
  • the frame 8 seen from the side has a horizontal part extending approximately between the two jacks 4 and 5. This horizontal part is extended by an upright which is oblique towards the front and vertical at the rear.
  • the oblique upright is connected to a first support and guide device 10.
  • This device 10 is provided with rollers 18 which are in contact with the rail in the working position and with guide shoes 19.
  • a second support device and guide 11 serves as a support for the rear upright of the frame 8.
  • the milling device also includes a second frame 9 carrying a second milling unit.
  • the oblique front upright of the second frame 9 is articulated on the rear upright of the frame 8 by means of an axis 20 perpendicular to the longitudinal axis of the rail.
  • the rear upright of the frame 9 rests on a support and guide device 12 also provided with rollers and guide shoes.
  • the two frames 8.9 hinged together rest at three points on the rails.
  • Two guide columns 21, 21 ′ integral with the horizontal part of the frame 8 extend perpendicularly to the latter in the direction of the rail.
  • a support 22 provided with two bores corresponding to the guide columns 21, 21 ′ is connected by means of a screw 23 to the frame 8.
  • This support 22 comprises a cutter 24 as well as the motor used for its drive.
  • a second milling unit is arranged to the same way under frame 9.
  • Figure 3 which is an end view of the milling device shows the device for adjusting the spacing of the frames 8.9 associated with each rail.
  • a hydraulic cylinder 26 coupled to a guide device 27 allows the guide shoes 19 to be pressed against the inner flank of each rail. These pads 19 can be replaced by guide rollers bearing against the inner flank of the rail.
  • the guide device is also provided with a guide roller 28 which is applied under the action of a jack 29 against the outer flank of the rail thereby ensuring perfect transverse guidance.
  • the support and guiding devices 10,11,12 comprise several rollers 18 and pads 19.
  • the rollers 18 can alternatively be replaced by support pads. These rollers 18 and their pads 19 can be spaced from each other by a fixed value or according to a determined function.
  • the rollers By defining an irregular spacing between the rollers 18, for example a spacing corresponding to the prime numbers, it is avoided that in the presence of regular undulations of the rail, the rollers all rest on a maximum or a minimum of the amplitude of the ripple of the rail. Thanks to the support and guiding devices 10, 11, 12 as well as to the spacers 26, a perfect positioning of the frames 8, 9 is ensured relative to the rail. This guidance transverse of the milling device provides high accuracy during milling.
  • the frames 8 and 9 have different lengths and serve as a guide base for the cutters 24, 24 '.
  • the guide base of the first cutter, formed by the frame 8 and the support devices 10, 11, is longer than the guide base 9, 11, 12 of the second cutter 24 '.
  • the first cutter will be able to correct the longest undulations while the second cutter 24 'carried and guided by a shorter base 9 corrects the shorter undulations.
  • the distance between the two cutters is determined to ensure the best transfer function of the assembly, that is to say the best correction of the long and short undulations of the rail.
  • FIG. 2 also schematically illustrates a heating unit 31 mounted on the chassis 22.
  • This heating unit 31 makes it possible to bring the surface film of the rail head to a temperature of the order of a few hundred degrees, which greatly facilitates the work of strawberries 24.24 '.
  • the working temperature is adapted to each type of rail steel.
  • the heating is generally carried out using an HF induction heating device, but it is also possible to envisage a laser heating device or any other device making it possible to quickly bring the surface layer of the rail to a high temperature.
  • a second heating unit (not shown) can be arranged on the support 22 'of the second cutter 24'.
  • Heating the rail makes it possible on the one hand to increase the productivity (speed of advancement and removal of material) of milling by a factor of the order of 5 and on the other hand the wear of the cutters is reduced by a factor of the same order of magnitude.
  • Associated with each milling unit there are the 32,32 'inputs of a suction device which allows to recover the chips produced by the cutters.
  • the chip extraction and storage device is described with reference to FIG. 13.
  • FIGS 4,5 illustrate in detail a second embodiment of the milling units as well as their method of attachment to the frame which serves as their guiding base.
  • the milling unit comprises a cutter 40 mounted on a mandrel 41.
  • This cutter 40 is rotated by a motor 42 coupled to a drive 43 which can be provided with a speed reducer or a clutch.
  • This assembly is mounted on a support 44 via a connecting element 45.
  • This connecting element 45 is pivotally mounted on the support 44 along an axis contained in a vertical plane passing through an axis parallel to the longitudinal axis of the rail.
  • Means (not illustrated) are arranged in the support 44 making it possible to vary the angular position of the connecting element 45 relative to the support 44 under the action of a control member.
  • the milling unit can rotate 90 degrees, which makes it possible to successively bring the cutter from a working position on the rail (figure 4) to a tool change position as illustrated in figure 5.
  • the frame 8 which serves as a guide base for the milling unit comprises a part 46 provided with a mechanical stop 47.
  • the support 44 is pivotally mounted on the part 46 around an axis 48.
  • a jack 49 whose the rod is integral with the support 44, and the cylinder of which is fixed to the part 46, it is possible to move the cutter 40 in the vertical plane perpendicular to the rails. This allows the cutter to be brought more or less close to the rail depending on the desired depth of cut for reshaping.
  • the milling unit in the raised position is shown in dotted lines in Figure 4.
  • FIG. 6 illustrates the milling device seen from above which comprises four milling units arranged in their respective frames 8, 9, 8 ', 9'.
  • the spacing cylinders 26 make it possible to adjust the spacing between the support and guide devices 10, 10 ', 11, 11', 12, 12 on which the frames 8, 9, 8, 9, 9, which bear milling units.
  • the milling and chip storage wagon illustrated in longitudinal section in Figure 7 shows the device that allows the tool to be changed from inside the wagon.
  • a carriage 50 carrying a hoist 51 can move longitudinally along a rail 52 fixed to the ceiling of the wagon and come to load a cutter located in the front part of the wagon which constitutes the stock of cutters.
  • the cutter is brought through the hoist 51 through an opening 53 made in the floor of the wagon, above the milling unit on which it is desired to make a tool change.
  • Figure 8 shows in another view the principle of changing strawberries.
  • the milling unit 55 located on the left of the figure is in the service position milling the rail, while the milling unit 56 is illustrated in a position allowing the tool to be changed after being rotated. 90 around an axis parallel to the rail in the direction of arrow F. In this position, the hoist 51 can align the cutter 40 opposite the mandrel 41 of the milling unit.
  • the fixing by Morse taper of the cutter allows a quick and easy change of the cutters.
  • FIG. 9 illustrates the cooling device 17 located at the rear of the milling units.
  • This device is connected to the chassis 2 of the rail vehicle by a jack 70 which makes it possible to raise the said device.
  • the piston of this jack 70 is connected to the frame 71 of the cooler by means of a connecting piece 72.
  • This connecting piece 72 also receives one of the ends of a drawbar 73 the other end of which is integral with the frame 9 forming the guide base of the second milling unit.
  • This drawbar 73 allows the driving and guiding of the cooler.
  • the frame 71 of the cooler comprises guide rollers 74 which come to bear on the rail in the service position. Inside the frame 71, baffles 75 are arranged in such a way that they cause a swirling flow of the cooling fluid which circulates in the frame.
  • the frame 71 also has on the upper part an inlet 76 and an outlet 77 of the cooling fluid.
  • FIG. 10 illustrates in partial section the cooler and shows a jack 78 connected to the connecting piece 72 and which makes it possible to adjust the spacing between the coolers associated with each of the rails and thereby ensure transverse guidance of the coolers on rails.
  • FIG 11 illustrates the power wagon used in the rail reprofiling installation.
  • This power wagon supplies the electrical energy required to supply the milling units as well as supply the heating units.
  • This power wagon is located behind the milling wagon which is at the head of the convoy and in front of a wagon illustrated in Figure 12 which carries 80.81 grinding and finishing units making it possible to eliminate the streaks left on the rail by the strawberry work.
  • These grinding or polishing units are for example of the type described in US Patents 4,615,150 or US 5,265,379.
  • the grinding wheels used can be lapidary, peripheral grinding wheels, shaped grinding wheels or reciprocating shaped abrasive blocks .
  • This wagon is also equipped with a suction and storage device for the dust produced by grinding.
  • the grinding wagon also has a measuring unit 82 located behind the grinding units.
  • This unit 82 makes it possible to measure the quality of the reprofiling obtained and, thanks to a servo-control of the milling units and of the heating units, to correct if necessary the adjustment of the cutting depth of the milling units, and / or the heating power. heating units.
  • FIG. 13 illustrates in detail the device allowing the aspiration and the storage of the chips during the milling operation.
  • the rear part of the milling wagon has a chip container 90.
  • a conveyor belt 91 is arranged in the bottom of the container 90.
  • Behind each of the cutters 24.24 ' is a suction mouth 32.32' connected to a pipe suction 92 which opens into a separating device 93.
  • a fan 94 fixed on the wagon, causes the suction of the chips which fall into the device 93.
  • This device 93 is provided with blades 95 driven in rotation which prevent accumulation chips inside the device and facilitates their evacuation to the container 90 and their distribution therein.
  • FIG 14 illustrates the chip unloading operation.
  • the reprofiling installation being stopped, a dump truck 96 is parked near the installation.
  • the hose 92 is disconnected from the end piece connecting the suction outlets 32, 32 ′ and it is connected to the outlet of a discharge container 97 located below the container 90 and into which the conveyor belt 91 opens. when the treadmill 91 is running, the chips are evacuated to the discharge container 97.
  • a pivoting hydraulic crane 98 mounted on the milling wagon makes it possible to move the separating device 93 above the dump truck 96.
  • the fan 94 then causes the suction of the chips which have fallen into the discharge container 97 towards the separating device 93 which dumped into the truck’s dumpster.
  • the chip extraction can be replaced by a device such as a magnetic drum which makes it possible to recover the chips by magnetic attraction.
  • the reprofiling installation as described comprises a milling wagon at the front, a power wagon in the center and a rail grinding and polishing wagon. It goes without saying that these operations can be dissociated if for example the working speeds are not the same for the different operations. Likewise, provision can be made for the different units (milling, heating, measurement, grinding) to be arranged under a single vehicle.

Abstract

The surface re-shaper consists of two milling units equipped with height control cylinders (4,5,6,) and each comprising a frame (8,9), rollers (18) and a milling tool (24,24'), mounted beneath a railway vehicle (2). The two frames are articulated relative to one another about a pivot (20) with its axis perpendicular to the lengthwise axis of the rail, and they are of different lengths. The milling tools are mounted on supports (22,22') which can slide vertically relative to the frames, and connected to jacks (23) which control their positions relative to the rail. The re-shaper also has a rail heater situated in front of the milling tools, and a cooler behind them. A collector with a suction channel or magnet gathers the material removed from the rail surface during re-shaping.

Description

La présente invention concerne une installation de reprofilage des rails de chemin de fer travaillant en voie. Il existe de nombreux dispositifs permettant de reprofiler les rails d'une voie ferrée, ainsi que des véhicules ferroviaires équipés de ces dispositifs, en particulier ceux décrits dans les brevets CH 633.336; CH 654.047; CH 666.068 ou CH 675.440 qui comportent tous des unités de meulage permettant de corriger certains défauts des rails. Les rails en voie présentent non seulement des profils abîmés mais encore des ondulations longitudinales dont les amplitudes varient. Le brevet CH 680.672 décrit un procédé permettant de programmer à l'avance de façon optimale les opérations de reprofilage à effectuer sur un tronçon donné. Grâce à ce procédé il est possible d'optimiser les opérations de maintenance dans le but de réduire le temps d'occupation des voies. Si l'on détermine grâce à ce procédé qu'il faut enlever beaucoup de matière pour corriger les défauts du rail, le meulage ou le polissage des rails peuvent nécessiter plusieurs passages sur le même tronçon, même en utilisant des machines à unités de meulage multiple. Ceci est difficilement compatible avec le temps pouvant être affecté aux travaux de reprofilage en fonction du taux d'occupation des voies ferrées. En utilisant des fraises plutôt que des meules, il est possible d'enlever plus de matière et donc de travailler plus rapidement. Le fraisage des rails en atelier est connu et décrit par exemple dans le brevet français 2.659.584. Pour obtenir un reprofilage précis, lors du fraisage ou du meulage en voie, il faut veiller à ce que la meule ou la fraise soit guidée longitudinalement et transversalement. De plus le résultat est influencé par la base de guidage qui porte l'outil. En effet, le point avant de cette base de guidage se déplace sur une surface présentant des défauts qui sont partiellement reproduits par l'outil. Des dispositifs de reprofilage de rail par fraisage en voie ont été proposés notamment dans le brevet AT 234.137 qui utilise comme base de guidage une longue règle qui supporte deux têtes de fraisage inclinées. Le brevet allemand DE 32 22 208 se sert de deux patins réglables en hauteur qui forment une base symétrique de part et d'autre de la fraise. Ces dispositifs présentent l'inconvénient de ne pouvoir corriger qu'un type de défaut du rail à la fois. Les ondulations longitudinales des rails n'ayant pas toutes la même longueur d'ondes, il convient d'éliminer à la fois des ondulations longues (30 cm à 3 mètres) et des ondulations courtes (3cm à 30 cm). Les dispositifs existants ont des outils portés par une base de guidage unique et ne corrigent donc que les ondulations d'une certaine longueur d'ondes (longues avec une base de guidage longue) ce qui n'est pas compatible avec la qualité requise pour les reseaux à haute vitesse.The present invention relates to a reprofiling installation of railway rails working on track. There are numerous devices making it possible to reprofile the rails of a railroad track, as well as railway vehicles equipped with these devices, in particular those described in patents CH 633,336; CH 654.047; CH 666.068 or CH 675.440 which all include grinding units to correct certain rail faults. The track rails not only have damaged profiles but also longitudinal undulations whose amplitudes vary. Patent CH 680,672 describes a process making it possible to optimally program in advance the reprofiling operations to be carried out on a given section. Thanks to this process, it is possible to optimize maintenance operations in order to reduce the occupation time of the tracks. If it is determined by this method that a lot of material has to be removed to correct the rail defects, the grinding or polishing of the rails may require several passes on the same section, even using machines with multiple grinding units . This is hardly compatible with the time that can be allocated to reprofiling work depending on the occupation rate of the railway tracks. By using cutters rather than grinding wheels, it is possible to remove more material and therefore to work faster. The milling of rails in the workshop is known and described for example in French patent 2,659,584. To obtain precise reprofiling, when milling or grinding on the track, it must be ensured that the grinding wheel or milling cutter is guided longitudinally and transversely. In addition, the result is influenced by the guide base which carries the tool. Indeed, the front point of this guide base moves on a surface having defects which are partially reproduced by the tool. Rail reprofiling devices by track milling have been proposed in particular in patent AT 234,137 which uses as a guide base a long rule which supports two inclined milling heads. German patent DE 32 22 208 uses two height-adjustable pads which form a symmetrical base on either side of the cutter. These devices have the drawback of being able to correct only one type of rail defect at a time. Since the longitudinal undulations of the rails do not all have the same wavelength, both long undulations (30 cm to 3 meters) and short undulations (3 cm to 30 cm) should be eliminated. Existing devices have tools carried by a single guide base and therefore only correct undulations of a certain wavelength (long with a long guide base) which is not compatible with the quality required for high speed networks.

D'autre part la qualité du fini de fraisage est nettement insuffisante pour les trains à grande vitesse et il faut donc pour éliminer totalement les marques laissées par les dents de la fraise prévoir un polissage du rail, opération qui dans les dispositifs existants nécessite un passage ultérieur avec une autre machine.On the other hand, the quality of the milling finish is clearly insufficient for high-speed trains and it is therefore necessary to completely eliminate the marks left by the teeth of the milling cutter, provide for a polishing of the rail, an operation which in existing devices requires passage later with another machine.

Le but de la présente invention est d'obvier aux inconvénients cités précédemment. La titulaire propose à cet effet une installation de reprofilage d au moins un rail d'une voie ferrée capable d'enlever une grande quantité de métal et d'éliminer aussi bien les ondulations longues que les ondulations courtes, tout en assurant un fini parfait des rails reprofilés. Un autre but de l'invention est d'augmenter la vitesse du travail de reprofilage du rail. Il faut en outre que l'installation de reprofilage permette d'éliminer et de traiter les résidus de métal résultant du reprofilage en voie.The object of the present invention is to overcome the drawbacks mentioned above. To this end, the licensee proposes a reprofiling installation of at least one rail of a railroad track capable of removing a large amount of metal and eliminating both long and short ripples, while ensuring a perfect finish of the reprofiled rails. Another object of the invention is to increase the speed of the rail reprofiling work. In addition, the reprofiling installation must allow metal residues resulting from the reprofiling process to be removed and treated.

La présente invention a pour objet une installation de reprofilage en voie de la surface du champignon d'au moins un rail d'une voie ferrée qui se distingue par les caractéristiques énumérées à la revendication 1.The subject of the present invention is a reprofiling installation on the surface of the head of at least one rail of a railroad track which is distinguished by the characteristics listed in claim 1.

Le dessin annexé illustre schématiquement et à titre d'exemple deux formes d'exécution de l'installation de reprofilage selon la présente invention.

  • La figure 1 est une vue d'ensemble de profil du wagon de fraisage portant un dispositif de fraisage.
  • La figure 2 est une vue de profil d'une première forme d'exécution du dispositif de fraisage.
  • La figure 3 est une vue en bout et en coupe du dispositif illustré à la figure 2.
  • La figure 4 est une vue de profil d'une deuxième forme d'exécution d une unité de fraisage illustrant la fraise en position de travail.
  • La figure 5 est une vue en élévation de l'unité de fraisage illustrée à la figure 4 en position de changement d'outil.
  • La figure 6 est une vue de dessus du dispositif de fraisage.
  • La figure 7 est une vue de profil en coupe longitudinale partielle du wagon de fraisage illustrant le dispositif de stockage et d'échange d'outils.
  • La figure 8 est une coupe transversale du wagon de fraisage montrant un changement d'outil.
  • La figure 9 est une vue de profil d'un dispositif refroidisseur du rail.
  • La figure 10 est une vue en bout du dispositif refroidisseur du rail.
  • La figure 11 est une vue du wagon de puissance.
  • La figure 12 est une vue de profil du wagon de meulage.
  • La figure 13 est une vue de détail du dispositif d'aspiration et de stockage des copeaux pendant l'opération de fraisage.
  • La figure 14 représente le dispositif permettant le déchargement des copeaux.
The accompanying drawing illustrates schematically and by way of example two embodiments of the reprofiling installation according to the present invention.
  • Figure 1 is an overall profile view of the milling wagon carrying a milling device.
  • Figure 2 is a side view of a first embodiment of the milling device.
  • FIG. 3 is an end view in section of the device illustrated in FIG. 2.
  • Figure 4 is a side view of a second embodiment of a milling unit illustrating the cutter in the working position.
  • Figure 5 is an elevational view of the milling unit illustrated in Figure 4 in the tool change position.
  • Figure 6 is a top view of the milling device.
  • Figure 7 is a side view in partial longitudinal section of the milling wagon illustrating the tool storage and exchange device.
  • Figure 8 is a cross section of the milling wagon showing a tool change.
  • Figure 9 is a side view of a rail cooling device.
  • Figure 10 is an end view of the rail cooling device.
  • Figure 11 is a view of the power car.
  • Figure 12 is a side view of the grinding wagon.
  • Figure 13 is a detail view of the chip extraction and storage device during the milling operation.
  • Figure 14 shows the device for discharging the chips.

Le wagon de fraisage et de stockage des copeaux illustré à la figure 1 constitue l'élément de tête de l'installation de reprofilage des rails. Ce wagon comporte, situé à l'avant du dispositif de fraisage, un dispositif de mesure 1 qui permet d'évaluer les déformations du rail à traiter. Le dispositif de fraisage est fixé au châssis 2 du véhicule ferroviaire 3 à l'aide de vérins 4,5,6 qui permettent de maintenir le dispositif de fraisage en position de travail et de le relever. Un timon 7 relie le châssis 2 au cadre 9 du dispositif de fraisage. Ce timon 7 permet l'entraînement le long de la voie du dispositif de fraisage. Le dispositif de fraisage comporte deux cadres 8,9 articulés entre eux. Ces cadres 8,9 reposent en trois points sur chaque rail par l'intermédiaire d'unités de support et de guidage 10,11,12. Les cadres 8 et 9 ont une longueur différente, le cadre 8 portant l'unité de fraisage 13 étant plus long que le cadre 9 qui porte l'unité de fraisage 14. Ces cadres 8,9 constituent chacun une base de guidage pour l'unité de fraisage 13,14 qu'ils portent. L'unité de fraisage 13 portée par le cadre 8 le plus long permettra d'éliminer les ondulations longues du rail, alors que l'unité de fraisage 14 portée par le cadre 9 éliminera les ondulations courtes.The wagon for milling and storing shavings illustrated in FIG. 1 constitutes the head element of the rail reprofiling installation. This wagon comprises, located at the front of the milling device, a measuring device 1 which makes it possible to evaluate the deformations of the rail to be treated. The milling device is fixed to the chassis 2 of the rail vehicle 3 using jacks 4,5,6 which allow the milling device to be held in the working position and to be raised. A drawbar 7 connects the chassis 2 to the frame 9 of the milling device. This drawbar 7 allows the drive along the path of the milling device. The milling device comprises two frames 8, 9 hinged together. These frames 8, 9 rest at three points on each rail by means of support and guide units 10, 11, 12. The frames 8 and 9 have a different length, the frame 8 carrying the milling unit 13 being longer than the frame 9 which carries the milling unit 14. These frames 8, 9 each constitute a guide base for the milling unit 13,14 which they carry. The milling unit 13 carried by the longest frame 8 will eliminate long ripples from the rail, while the milling unit 14 carried by the frame 9 will eliminate short ripples.

Chacune des unités de fraisage 13,14 est munie d'une fraise ainsi que des moyens de déplacement de cette fraise qui seront décrits en détail ci-dessous. La figure 1 illustre encore des dispositifs de chauffage du rail 15,16 situés à l'avant de chacune des deux unités de fraisage 13,14 ainsi qu'un dispositif de refroidissement du rail 17 situé à l'arrière du dispositif de fraisage. Les dispositifs de chauffage du rail sont montés sur les cadres 8,9 respectivement. L'unité de refroidissement 17 est tractée par le second cadre 9 à l'aide d'un timon.Each of the milling units 13,14 is provided with a cutter as well as means for moving this cutter which will be described in detail below. Figure 1 also illustrates rail heating devices 15,16 located at the front of each of the two milling units 13,14 as well as a rail cooling device 17 located at the rear of the milling device. The rail heaters are mounted on the frames 8.9 respectively. The cooling unit 17 is towed by the second frame 9 using a drawbar.

L'unité de mesure 1 des déformations du rail permet de déterminer la profondeur de coupe à laquelle on désire faire travailler les fraises, ainsi que la puissance à fournir aux unités de chauffage pour une vitesse d'avancement donnée.The measurement unit 1 of the rail deformations makes it possible to determine the depth of cut at which it is desired to make the cutters work, as well as the power to be supplied to the heating units for a given forward speed.

La figure 2 illustre schématiquement et plus en détail une forme d'exécution du dispositif de fraisage. Ce dispositif comporte un premier cadre 8 relié par l'intermédiaire de deux vérins 4,5 au châssis 2 du véhicule. Ces vérins 4,5 maintiennent le cadre 8 sous le châssis 2 et permettent de le relever lors de la marche haut le pied par exemple. En fonctionnement, ces vérins 4,5 permettent d'appliquer l'unité de fraisage contre le rail avec une force déterminée.Figure 2 illustrates schematically and in more detail an embodiment of the milling device. This device comprises a first frame 8 connected via two cylinders 4,5 to the chassis 2 of the vehicle. These cylinders 4,5 hold the frame 8 under the chassis 2 and make it possible to raise it when walking high, for example. In operation, these cylinders 4,5 make it possible to apply the milling unit against the rail with a determined force.

Le cadre 8 vu de coté comporte une partie horizontale s'étendant approximativement entre les deux vérins 4 et 5. Cette partie horizontale se prolonge par un montant oblique vers l'avant et vertical à l'arrière. Le montant oblique est relié à un premier dispositif d'appui et de guidage 10. Ce dispositif 10 est muni de roulettes 18 qui sont en contact avec le rail en position de travail et de patins de guidage 19. Un deuxième dispositif d'appui et de guidage 11 sert de support au montant arrière du cadre 8. Le dispositif de fraisage comporte encore un second cadre 9 portant une seconde unité de fraisage. Le montant avant oblique du deuxième cadre 9 est articulé sur le montant arrière du cadre 8 au moyen d'un axe 20 perpendiculaire à l'axe longitudinal du rail. Le montant arrière du cadre 9 repose sur un dispositif d'appui et de guidage 12 également muni de roulettes et de patins de guidage. Les deux cadres 8,9 articulés entre eux reposent en trois points sur les rails.The frame 8 seen from the side has a horizontal part extending approximately between the two jacks 4 and 5. This horizontal part is extended by an upright which is oblique towards the front and vertical at the rear. The oblique upright is connected to a first support and guide device 10. This device 10 is provided with rollers 18 which are in contact with the rail in the working position and with guide shoes 19. A second support device and guide 11 serves as a support for the rear upright of the frame 8. The milling device also includes a second frame 9 carrying a second milling unit. The oblique front upright of the second frame 9 is articulated on the rear upright of the frame 8 by means of an axis 20 perpendicular to the longitudinal axis of the rail. The rear upright of the frame 9 rests on a support and guide device 12 also provided with rollers and guide shoes. The two frames 8.9 hinged together rest at three points on the rails.

Deux colonnes de guidage 21,21' solidaires de la partie horizontale du cadre 8 s'étendent perpendiculairement à cette dernière en direction du rail. Un support 22 muni de deux alésages correspondant aux colonnes de guidage 21,21' est relié par l'intermédiaire d'une vis 23 au cadre 8. Ce support 22 comporte une fraise 24 ainsi que le moteur servant a son entraînement.Two guide columns 21, 21 ′ integral with the horizontal part of the frame 8 extend perpendicularly to the latter in the direction of the rail. A support 22 provided with two bores corresponding to the guide columns 21, 21 ′ is connected by means of a screw 23 to the frame 8. This support 22 comprises a cutter 24 as well as the motor used for its drive.

Grâce au dispositif de commande 25 de la vis 23, il est possible de faire varier la distance entre le support 22 et le rail, et de ce fait de régler la profondeur de coupe de la fraise 24. Une deuxième unité de fraisage est agencée de la même façon sous le cadre 9.Thanks to the control device 25 of the screw 23, it is possible to vary the distance between the support 22 and the rail, and therefore to adjust the cutting depth of the cutter 24. A second milling unit is arranged to the same way under frame 9.

La figure 3 qui est une vue en bout du dispositif de fraisage montre le dispositif qui permet de régler l'écartement des cadres 8,9 associés à chaque rail. Un vérin hydraulique 26 couplé à un dispositif de guidage 27 permet de plaquer les patins de guidage 19 contre le flanc intérieur de chaque rail. Ces patins 19 peuvent être remplacés par des galets de guidage prenant appui contre le flanc intérieur du rail. Le dispositif de guidage est encore muni d'une roulette de guidage 28 qui est appliquée sous l'action d'un vérin 29 contre le flanc extérieur du rail assurant de ce fait un guidage transversal parfait. Les dispositifs d'appui et de guidage 10,11,12 comportent plusieurs roulettes 18 et patins 19. Les roulettes 18 peuvent dans une variante être remplacées par des patins d'appui. Ces roulettes 18 et leurs patins 19 peuvent être espacés les uns des autres d une valeur fixe ou selon une fonction déterminée. En définissant un espacement irrégulier entre les roulettes 18, par exemple un espacement correspondant aux nombres premiers, on évite qu'en présence d'ondulations régulières du rail, les roulettes reposent toutes sur un maximum ou un minimum de l'amplitude de l'ondulation du rail. Grâce aux dispositifs d'appui et de guidage 10,11,12 ainsi qu'aux vérins d'écartement 26 on assure un positionnement parfait des cadres 8,9 par rapport au rail. Ce guidage transversal du dispositif de fraisage permet d'obtenir une grande précision lors du fraisage. Les cadres 8 et 9 ont des longueurs différentes et servent de base de guidage aux fraises 24,24'. La base de guidage de la première fraise, formée par le cadre 8 et les dispositifs d'appui 10,11, est plus longue que la base de guidage 9,11,12 de la seconde fraise 24'. Ainsi la première fraise va pouvoir corriger les ondulations les plus longues alors que la deuxième fraise 24' portée et guidée par une base 9 plus courte corrige les ondulations plus courtes. La distance entre les deux fraises est déterminée pour assurer la meilleure fonction de transfert de l'ensemble, c'est-à-dire la meilleure correction des ondulations longues et courtes du rail. On obtient ainsi non seulement une très forte diminution de l'amplitude des défauts, mais aussi une excellente qualité de surface grâce au fait que la deuxième fraise 24' travaille à une profondeur de coupe pratiquement constante, les défauts importants ayant été éliminés par la première fraise 24.Figure 3 which is an end view of the milling device shows the device for adjusting the spacing of the frames 8.9 associated with each rail. A hydraulic cylinder 26 coupled to a guide device 27 allows the guide shoes 19 to be pressed against the inner flank of each rail. These pads 19 can be replaced by guide rollers bearing against the inner flank of the rail. The guide device is also provided with a guide roller 28 which is applied under the action of a jack 29 against the outer flank of the rail thereby ensuring perfect transverse guidance. The support and guiding devices 10,11,12 comprise several rollers 18 and pads 19. The rollers 18 can alternatively be replaced by support pads. These rollers 18 and their pads 19 can be spaced from each other by a fixed value or according to a determined function. By defining an irregular spacing between the rollers 18, for example a spacing corresponding to the prime numbers, it is avoided that in the presence of regular undulations of the rail, the rollers all rest on a maximum or a minimum of the amplitude of the ripple of the rail. Thanks to the support and guiding devices 10, 11, 12 as well as to the spacers 26, a perfect positioning of the frames 8, 9 is ensured relative to the rail. This guidance transverse of the milling device provides high accuracy during milling. The frames 8 and 9 have different lengths and serve as a guide base for the cutters 24, 24 '. The guide base of the first cutter, formed by the frame 8 and the support devices 10, 11, is longer than the guide base 9, 11, 12 of the second cutter 24 '. Thus the first cutter will be able to correct the longest undulations while the second cutter 24 'carried and guided by a shorter base 9 corrects the shorter undulations. The distance between the two cutters is determined to ensure the best transfer function of the assembly, that is to say the best correction of the long and short undulations of the rail. There is thus obtained not only a very large reduction in the amplitude of the defects, but also an excellent surface quality thanks to the fact that the second milling cutter 24 'works at an almost constant depth of cut, the significant defects having been eliminated by the first strawberry 24.

La figure 2 illustre encore schématiquement une unité de chauffage 31 montée sur le châssis 22. Cette unité de chauffage 31 permet d'amener la pellicule superficielle du champignon du rail à une température de l'ordre de quelques centaines de degrés, ce qui facilite grandement le travail des fraises 24,24'. La température de travail est adaptée à chaque type d'acier des rails. Le chauffage est généralement réalisé grâce à un dispositif de chauffage par induction HF, mais on peut également envisager un dispositif de chauffage par laser ou tout autre dispositif permettant d'amener rapidement la couche superficielle du rail à une température élevée. Une deuxième unité de chauffage (non illustrée) peut être agencée sur le support 22' de la deuxième fraise 24'. Le chauffage du rail permet d'une part d'augmenter la productivité (vitesse d'avancement et enlèvement de matière) du fraisage d'un facteur de l'ordre de 5 et d'autre part l'usure des fraises est réduite d'un facteur du même ordre de grandeur. Associées à chaque unité de fraisage, on trouve les entrées 32,32' d'un dispositif d'aspiration qui permet de récupérer les copeaux produits par les fraises. Le dispositif d'aspiration et de stockage des copeaux est décrit en référence à la figure 13.FIG. 2 also schematically illustrates a heating unit 31 mounted on the chassis 22. This heating unit 31 makes it possible to bring the surface film of the rail head to a temperature of the order of a few hundred degrees, which greatly facilitates the work of strawberries 24.24 '. The working temperature is adapted to each type of rail steel. The heating is generally carried out using an HF induction heating device, but it is also possible to envisage a laser heating device or any other device making it possible to quickly bring the surface layer of the rail to a high temperature. A second heating unit (not shown) can be arranged on the support 22 'of the second cutter 24'. Heating the rail makes it possible on the one hand to increase the productivity (speed of advancement and removal of material) of milling by a factor of the order of 5 and on the other hand the wear of the cutters is reduced by a factor of the same order of magnitude. Associated with each milling unit, there are the 32,32 'inputs of a suction device which allows to recover the chips produced by the cutters. The chip extraction and storage device is described with reference to FIG. 13.

Les figures 4,5 illustrent en détail une deuxième forme d'exécution des unités de fraisage ainsi que leur mode de fixation sur le cadre qui leur sert de base de guidage. L'unité de fraisage comporte une fraise 40 montée sur un mandrin 41. Cette fraise 40 est entraînée en rotation par un moteur 42 couplé à un entraînement 43 qui peut être muni d'un réducteur de vitesse ou d'un embrayage. Cet ensemble est monté sur un support 44 par l'intermédiaire d'un élément de liaison 45. Cet élément de liaison 45 est monté pivotant sur le support 44 selon un axe contenu dans un plan vertical passant par un axe parallèle à l'axe longitudinal du rail. Des moyens (non illustrés) sont agencés dans le support 44 permettant de faire varier la position angulaire de l'élément de liaison 45 par rapport au support 44 sous l'action d'un organe de commande. Ainsi l'unité de fraisage peut effectuer une rotation de 90 degrés, ce qui permet d'amener successivement la fraise d'une position de travail sur le rail (figure 4) à une position de changement des outils comme illustré à la figure 5. Le cadre 8 qui sert de base de guidage à l'unité de fraisage comporte une pièce 46 munie d'une butée mécanique 47. Le support 44 est monté pivotant sur la pièce 46 autour d'un axe 48. En actionnant un vérin 49 dont la tige est solidaire du support 44, et dont le cylindre est fixé à la pièce 46, il est possible de déplacer la fraise 40 dans le plan vertical perpendiculairement aux rails. Ceci permet d'amener la fraise plus ou moins près du rail en fonction de la profondeur de coupe désirée pour le reprofilage. L'unité de fraisage en position relevée est indiquée en pointillés à la figure 4.Figures 4,5 illustrate in detail a second embodiment of the milling units as well as their method of attachment to the frame which serves as their guiding base. The milling unit comprises a cutter 40 mounted on a mandrel 41. This cutter 40 is rotated by a motor 42 coupled to a drive 43 which can be provided with a speed reducer or a clutch. This assembly is mounted on a support 44 via a connecting element 45. This connecting element 45 is pivotally mounted on the support 44 along an axis contained in a vertical plane passing through an axis parallel to the longitudinal axis of the rail. Means (not illustrated) are arranged in the support 44 making it possible to vary the angular position of the connecting element 45 relative to the support 44 under the action of a control member. Thus the milling unit can rotate 90 degrees, which makes it possible to successively bring the cutter from a working position on the rail (figure 4) to a tool change position as illustrated in figure 5. The frame 8 which serves as a guide base for the milling unit comprises a part 46 provided with a mechanical stop 47. The support 44 is pivotally mounted on the part 46 around an axis 48. By actuating a jack 49 whose the rod is integral with the support 44, and the cylinder of which is fixed to the part 46, it is possible to move the cutter 40 in the vertical plane perpendicular to the rails. This allows the cutter to be brought more or less close to the rail depending on the desired depth of cut for reshaping. The milling unit in the raised position is shown in dotted lines in Figure 4.

La figure 6 illustre le dispositif de fraisage vu de dessus qui comporte quatre unités de fraisage agencées dans leurs cadres respectifs 8,9,8',9'. Les vérins d' écartement 26 permettent de régler l'écartement entre les dispositifs d'appui et de guidage 10,10',11,11',12,12 sur lesquels reposent les cadres 8,9,8',9' qui portent les unités de fraisage.FIG. 6 illustrates the milling device seen from above which comprises four milling units arranged in their respective frames 8, 9, 8 ', 9'. The spacing cylinders 26 make it possible to adjust the spacing between the support and guide devices 10, 10 ', 11, 11', 12, 12 on which the frames 8, 9, 8, 9, 9, which bear milling units.

Le wagon de fraisage et de stockage des copeaux illustré en coupe longitudinale à la figure 7 montre le dispositif qui permet le changement de l'outil depuis l'intérieur du wagon. Un chariot 50 portant un palan 51 peut se déplacer longitudinalement le long d'un rail 52 fixé au plafond du wagon et venir charger une fraise située dans la partie avant du wagon qui constitue le stock de fraises. La fraise est amenée grâce au palan 51 à travers une ouverture 53 pratiquée dans le plancher du wagon, au dessus de l'unité de fraisage sur laquelle on désire effectuer un changement d'outil.The milling and chip storage wagon illustrated in longitudinal section in Figure 7 shows the device that allows the tool to be changed from inside the wagon. A carriage 50 carrying a hoist 51 can move longitudinally along a rail 52 fixed to the ceiling of the wagon and come to load a cutter located in the front part of the wagon which constitutes the stock of cutters. The cutter is brought through the hoist 51 through an opening 53 made in the floor of the wagon, above the milling unit on which it is desired to make a tool change.

La figure 8 montre dans une autre vue le principe de changement des fraises. L'unité de fraisage 55 située sur la gauche de la figure est en position de service en train de fraiser le rail, alors que l'unité de fraisage 56 est illustrée dans une position permettant le changement de l'outil après avoir subi une rotation de 90 autour d'un axe parallèle au rail dans le sens de la flèche F. Dans cette position, le palan 51 peut aligner la fraise 40 en regard du mandrin 41 de l'unité de fraisage. La fixation par cône morse de la fraise permet un changement rapide et aisé des fraises.Figure 8 shows in another view the principle of changing strawberries. The milling unit 55 located on the left of the figure is in the service position milling the rail, while the milling unit 56 is illustrated in a position allowing the tool to be changed after being rotated. 90 around an axis parallel to the rail in the direction of arrow F. In this position, the hoist 51 can align the cutter 40 opposite the mandrel 41 of the milling unit. The fixing by Morse taper of the cutter allows a quick and easy change of the cutters.

La figure 9 illustre le dispositif de refroidissement 17 situé à l'arrière des unités de fraisage. Ce dispositif est relié au châssis 2 du véhicule ferroviaire par un vérin 70 qui permet de relever le dit dispositif. Le piston de ce vérin 70 est relié au bâti 71 du refroidisseur par l'intermédiaire d'une pièce de liaison 72. Cette pièce de liaison 72 reçoit également une des extrémités d'un timon 73 dont l'autre extrémité est solidaire du cadre 9 formant la base de guidage de la deuxième unité de fraisage. Ce timon 73 permet l'entraînement et le guidage du refroidisseur. Le bâti 71 du refroidisseur comporte des roulettes de guidage 74 qui viennent prendre appui sur le rail en position de service. A l'intérieur du bâti 71, des chicanes 75 sont agencées de telle façon qu'elles provoquent un écoulement tourbillonnaire du fluide de refroidissement qui circule dans le bâti. Le bâti 71 comporte encore sur la partie supérieure une entrée 76 et une sortie 77 du fluide de refroidissement. La figure 10 illustre en coupe partielle le refroidisseur et montre un vérin 78 connecté à la pièce de liaison 72 et qui permet d'ajuster l'écartement entre les refroidisseurs associés à chacun des rails et d'assurer de ce fait un guidage transversal des refroidisseurs sur les rails.FIG. 9 illustrates the cooling device 17 located at the rear of the milling units. This device is connected to the chassis 2 of the rail vehicle by a jack 70 which makes it possible to raise the said device. The piston of this jack 70 is connected to the frame 71 of the cooler by means of a connecting piece 72. This connecting piece 72 also receives one of the ends of a drawbar 73 the other end of which is integral with the frame 9 forming the guide base of the second milling unit. This drawbar 73 allows the driving and guiding of the cooler. The frame 71 of the cooler comprises guide rollers 74 which come to bear on the rail in the service position. Inside the frame 71, baffles 75 are arranged in such a way that they cause a swirling flow of the cooling fluid which circulates in the frame. The frame 71 also has on the upper part an inlet 76 and an outlet 77 of the cooling fluid. FIG. 10 illustrates in partial section the cooler and shows a jack 78 connected to the connecting piece 72 and which makes it possible to adjust the spacing between the coolers associated with each of the rails and thereby ensure transverse guidance of the coolers on rails.

La figure 11 illustre le wagon de puissance utilisé dans l'installation de reprofilage des rails. Ce wagon de puissance fournit l'énergie électrique nécessaire à l'alimentation des unités de fraisage ainsi qu'à l'alimentation des unités de chauffage. Ce wagon de puissance est situé derrière le wagon de fraisage qui est en tête du convoi et devant un wagon illustré à la figure 12 qui porte des unités 80,81 de meulage et de finition permettant d'éliminer les stries laissées sur le rail par le travail des fraises. Ces unités de meulage ou de polissage sont par exemple du type décrit dans les brevets US 4 615 150 ou US 5 265 379. Les meules utilisées peuvent être des meules lapidaires, périphériques, des meules de forme ou des blocs abrasifs de forme à mouvement alternatif. Ce wagon est de plus équipé d'un dispositif d'aspiration et de stockage des poussières produites par le meulage. Le wagon de meulage comporte également une unité de mesure 82 située derrière les unités de meulage. Cette unité 82 permet de mesurer la qualité du reprofilage obtenu et grâce à un asservissement des unités de fraisage et des unités de chauffage, de corriger le cas échéant le réglage de la profondeur de coupe des unités de fraisage, et/ou la puissance de chauffe des unités de chauffage.Figure 11 illustrates the power wagon used in the rail reprofiling installation. This power wagon supplies the electrical energy required to supply the milling units as well as supply the heating units. This power wagon is located behind the milling wagon which is at the head of the convoy and in front of a wagon illustrated in Figure 12 which carries 80.81 grinding and finishing units making it possible to eliminate the streaks left on the rail by the strawberry work. These grinding or polishing units are for example of the type described in US Patents 4,615,150 or US 5,265,379. The grinding wheels used can be lapidary, peripheral grinding wheels, shaped grinding wheels or reciprocating shaped abrasive blocks . This wagon is also equipped with a suction and storage device for the dust produced by grinding. The grinding wagon also has a measuring unit 82 located behind the grinding units. This unit 82 makes it possible to measure the quality of the reprofiling obtained and, thanks to a servo-control of the milling units and of the heating units, to correct if necessary the adjustment of the cutting depth of the milling units, and / or the heating power. heating units.

La figure 13 illustre en détail le dispositif permettant l'aspiration et le stockage des copeaux pendant l'opération de fraisage. La partie arrière du wagon de fraisage comporte un container à copeaux 90. Un tapis roulant 91 est agencé dans le fond du container 90. Derrière chacune des fraises 24,24' se trouve une bouche d'aspiration 32,32' connectée à un tuyau d'aspiration 92 qui débouche dans un dispositif séparateur 93. Un ventilateur 94, fixé sur le wagon, provoque l'aspiration des copeaux qui tombent dans le dispositif 93. Ce dispositif 93 est muni de pales 95 entraînées en rotation qui empêchent l'accumulation des copeaux à l'intérieur du dispositif et facilite leur évacuation vers le container 90 et leur distribution dans celui-ci.FIG. 13 illustrates in detail the device allowing the aspiration and the storage of the chips during the milling operation. The rear part of the milling wagon has a chip container 90. A conveyor belt 91 is arranged in the bottom of the container 90. Behind each of the cutters 24.24 'is a suction mouth 32.32' connected to a pipe suction 92 which opens into a separating device 93. A fan 94, fixed on the wagon, causes the suction of the chips which fall into the device 93. This device 93 is provided with blades 95 driven in rotation which prevent accumulation chips inside the device and facilitates their evacuation to the container 90 and their distribution therein.

La figure 14 illustre l'opération de déchargement des copeaux. L'installation de reprofilage étant à l'arrêt, un camion benne 96 vient se ranger à proximité de l'installation. On déconnecte le tuyau 92 de l'embout reliant les bouches d'aspiration 32,32' et on le connecte à la sortie d'un récipient de décharge 97 situé en dessous du container 90 et dans lequel débouche le tapis roulant 91. La mise en marche du tapis roulant 91 provoque l'évacuation des copeaux vers le récipient de décharge 97.Figure 14 illustrates the chip unloading operation. The reprofiling installation being stopped, a dump truck 96 is parked near the installation. The hose 92 is disconnected from the end piece connecting the suction outlets 32, 32 ′ and it is connected to the outlet of a discharge container 97 located below the container 90 and into which the conveyor belt 91 opens. when the treadmill 91 is running, the chips are evacuated to the discharge container 97.

Une grue hydraulique à pivot 98 montée sur le wagon de fraisage permet de déplacer le dispositif séparateur 93 en dessus du camion benne 96. Le ventilateur 94 provoque ensuite l'aspiration des copeaux tombés dans le récipient de décharge 97 vers le dispositif séparateur 93 qui les évacue dans la benne du camion. Dans une variante non illustrée, l'aspiration des copeaux peut être remplacée par un dispositif comme un tambour magnétique qui permet de récupérer les copeaux par attraction magnétique.A pivoting hydraulic crane 98 mounted on the milling wagon makes it possible to move the separating device 93 above the dump truck 96. The fan 94 then causes the suction of the chips which have fallen into the discharge container 97 towards the separating device 93 which dumped into the truck’s dumpster. In a variant not illustrated, the chip extraction can be replaced by a device such as a magnetic drum which makes it possible to recover the chips by magnetic attraction.

L'installation de reprofilage telle que décrite comporte un wagon de fraisage à l'avant, un wagon de puissance au centre et un wagon de meulage et de polissage des rails. Il va de soi que ces opérations peuvent être dissociées si par exemple les vitesses de travail ne sont pas les mêmes pour les différentes opérations. De même, on peut prévoir que les différentes unités (fraisage, chauffage, mesure, meulage) soient agencées sous un véhicule unique.The reprofiling installation as described comprises a milling wagon at the front, a power wagon in the center and a rail grinding and polishing wagon. It goes without saying that these operations can be dissociated if for example the working speeds are not the same for the different operations. Likewise, provision can be made for the different units (milling, heating, measurement, grinding) to be arranged under a single vehicle.

Claims (15)

1. Installation de reprofilage en voie d'au moins un rail d'une voie de chemin de fer, caractérisée par le fait qu'elle comporte au moins deux unités de fraisage montées sous un véhicule ferroviaire et déplaçables par rapport à celui-ci à l'aide de moyens de relevage et d'application contre le rail, comprenant chacune au moins une fraise entraînée en rotation par un moteur; par le fait que chaque unité de fraisage est portée par un support déplaçable verticalement par rapport à un cadre guidé le long du rail; par le fait que les deux cadres sont articulés l'un par rapport à l'autre suivant un axe perpendiculaire à l'axe longitudinal du rail et par le fait qu'ils présentent des longueurs différentes; par le fait que ces cadres sont reliés au châssis dû véhicule par les moyens de relevage et d'application contre le rail.1. Reprofiling installation in the track of at least one rail of a railway track, characterized in that it comprises at least two milling units mounted under a rail vehicle and movable relative to the latter to using lifting and application means against the rail, each comprising at least one cutter driven in rotation by a motor; by the fact that each milling unit is carried by a support movable vertically with respect to a frame guided along the rail; by the fact that the two frames are articulated with respect to each other along an axis perpendicular to the longitudinal axis of the rail and by the fact that they have different lengths; by the fact that these frames are connected to the chassis of the vehicle by the means lifting and application against the rail. 2. Installation selon la revendication 1, caractérisée par le fait que les unités de fraisage sont portées par un support monté coulissant verticalement sur le cadre et par le fait que des moyens sont prévus pour commander la position de ce support par rapport au cadre et donc par rapport au rail.2. Installation according to claim 1, characterized in that the milling units are carried by a support mounted vertically sliding on the frame and by the fact that means are provided for controlling the position of this support relative to the frame and therefore compared to the rail. 3. Installation selon la revendication 1, caractérisée par le fait que les unités de fraisage sont portées par un support pivoté sur le cadre suivant un axe perpendiculaire à l'axe longitudinal du rail et par le fait que ce support est relié à un vérin commandant la position angulaire du support par rapport au cadre.3. Installation according to claim 1, characterized in that the milling units are carried by a support pivoted on the frame along an axis perpendicular to the longitudinal axis of the rail and by the fact that this support is connected to a controlling cylinder the angular position of the support relative to the frame. 4. Installation selon la revendication 3, caractérisée par le fait que l'unité de fraisage est montée pivotante sur son support selon un axe contenu dans un plan vertical passant par un axe parallèle à l'axe longitudinal du rail.4. Installation according to claim 3, characterized in that the milling unit is pivotally mounted on its support along an axis contained in a vertical plane passing through an axis parallel to the longitudinal axis of the rail. 5. Installation selon l'une des revendications précédentes, caractérisée par le fait que les cadres reposent sur le rail par l'intermédiaire de dispositifs d'appui et de guidage munis de roulettes ou de patins d'appui en contact avec la surface de roulement du rail et de patins ou de galets de guidage qui prennent appui contre le flanc intérieur du rail.5. Installation according to one of the preceding claims, characterized in that the frames rest on the rail by means of support and guide devices provided with rollers or support pads in contact with the rolling surface. rail and guide shoes or rollers which bear against the inner side of the rail. 6. Installation selon l'une des revendications précédentes, caractérisée par le fait que les cadres portant les unités de fraisage, associés à chacun des rails, sont reliés au moyen de vérins permettant de régler l'écartement entre ces cadres.6. Installation according to one of the preceding claims, characterized in that the frames carrying the milling units, associated with each of the rails, are connected by means of jacks for adjusting the spacing between these frames. 7. Installation selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte au moins une unité de chauffage du rail à l'avant d'une unité de fraisage.7. Installation according to one of the preceding claims, characterized in that it comprises at least one rail heating unit at the front of a milling unit. 8. Installation selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte une unité de refroidissement située derrière les unités de fraisage.8. Installation according to one of the preceding claims, characterized in that it comprises a cooling unit located behind the milling units. 9. Installation selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte des moyens de récupération et de stockage des copeaux produits par les fraises.9. Installation according to one of the preceding claims, characterized in that it comprises means for recovering and storing the chips produced by the strawberries. 10. Installation selon l'une des revendications précédentes, caractérisée par le fait que les moyens de récupération des copeaux sont constitués d'un canal d'aspiration dont l'entrée se situe derrière la fraise et qui débouche dans un container intégré au véhicule ferroviaire portant les unités de fraisage.10. Installation according to one of the preceding claims, characterized in that the chip recovery means consist of a suction channel whose inlet is located behind the cutter and which opens into a container integrated into the rail vehicle bearing the milling units. 11. Installation selon l'une des revendications précédentes, caractérisée par le fait que les moyens de récupération des copeaux de fraisage sont constitués d'un dispositif permettant l'attraction magnétique des copeaux.11. Installation according to one of the preceding claims, characterized in that the means for recovering the milling chips consist of a device allowing the magnetic attraction of the chips. 12. Installation selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte une unité de mesure des défauts du rail située à l'avant des unités de fraisage permettant de déterminer la profondeur de coupe des outils, la puissance à fournir aux unités de chauffage et la vitesse d'avancement de l'installation.12. Installation according to one of the preceding claims, characterized in that it comprises a rail defect measurement unit located at the front of the milling units making it possible to determine the cutting depth of the tools, the power to be supplied to the heating units and the speed of advance of the installation. 13. Installation selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte un second véhicule ferroviaire équipé d'un dispositif de meulage ou de polissage des rails, véhicule situé derrière le véhicule équipé des dispositifs de fraisage.13. Installation according to one of the preceding claims, characterized in that it comprises a second rail vehicle equipped with a device for grinding or polishing the rails, vehicle located behind the vehicle equipped with milling devices. 14. Installation selon la revendication 13, caractérisée par le fait qu'elle comporte une unité de mesure des défauts du rail située à l'arrière des unités de meulage.14. Installation according to claim 13, characterized in that it comprises a rail defect measurement unit located at the rear of the grinding units. 15. Installation selon l'une des revendications précédentes, caractérisée par le fait qu'elle comporte un wagon de traction et de puissance muni de générateurs, ce wagon étant situé entre le véhicule équipé du dispositif de fraisage et celui équipé du dispositif de polissage des rails.15. Installation according to one of the preceding claims, characterized in that it comprises a traction and power wagon provided with generators, this wagon being located between the vehicle equipped with the milling device and that equipped with the device for polishing rails.
EP94119363A 1994-02-18 1994-12-08 Device for reshaping railway rails Expired - Lifetime EP0668397B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00497/94A CH689642A5 (en) 1994-02-18 1994-02-18 An installation for reprofiling the rails of a railway.
CH497/94 1994-02-18

Publications (2)

Publication Number Publication Date
EP0668397A1 true EP0668397A1 (en) 1995-08-23
EP0668397B1 EP0668397B1 (en) 1998-05-20

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EP94119363A Expired - Lifetime EP0668397B1 (en) 1994-02-18 1994-12-08 Device for reshaping railway rails

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US (1) US5549505A (en)
EP (1) EP0668397B1 (en)
JP (1) JPH07229103A (en)
AT (1) ATE166406T1 (en)
AU (1) AU678067B2 (en)
CA (1) CA2137864C (en)
CH (1) CH689642A5 (en)
DE (1) DE69410430T2 (en)
HK (1) HK1008846A1 (en)
ZA (1) ZA949649B (en)

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CN105081421A (en) * 2014-05-19 2015-11-25 施韦鲍两合公司 Movable fixture for milling rail heads and procedure for replacing cutting plates for such a fixture
CN106141765A (en) * 2016-08-26 2016-11-23 湖南大学 A kind of milling attachment for rail trimming

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JP5508753B2 (en) * 2009-04-10 2014-06-04 東鉄工業株式会社 Rail rust removal machine
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CN104612005B (en) * 2013-11-04 2017-02-22 中国铁建高新装备股份有限公司 Machining method for re-forming rail head contour
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CN106141765A (en) * 2016-08-26 2016-11-23 湖南大学 A kind of milling attachment for rail trimming

Also Published As

Publication number Publication date
AU678067B2 (en) 1997-05-15
CH689642A5 (en) 1999-07-30
EP0668397B1 (en) 1998-05-20
JPH07229103A (en) 1995-08-29
CA2137864C (en) 2000-02-29
HK1008846A1 (en) 1999-05-21
ATE166406T1 (en) 1998-06-15
CA2137864A1 (en) 1995-08-19
DE69410430T2 (en) 1998-12-10
ZA949649B (en) 1995-08-01
AU7919694A (en) 1995-08-31
DE69410430D1 (en) 1998-06-25
US5549505A (en) 1996-08-27

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