EP0607723A1 - Rail guard - Google Patents

Rail guard Download PDF

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Publication number
EP0607723A1
EP0607723A1 EP93403165A EP93403165A EP0607723A1 EP 0607723 A1 EP0607723 A1 EP 0607723A1 EP 93403165 A EP93403165 A EP 93403165A EP 93403165 A EP93403165 A EP 93403165A EP 0607723 A1 EP0607723 A1 EP 0607723A1
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EP
European Patent Office
Prior art keywords
support
plate
stone
rail
absorption device
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
EP93403165A
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German (de)
French (fr)
Inventor
Jean-Daniel Nast
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.)
Alstom Transport SA
Original Assignee
GEC Alsthom Transport SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GEC Alsthom Transport SA filed Critical GEC Alsthom Transport SA
Publication of EP0607723A1 publication Critical patent/EP0607723A1/en
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
    • B61F19/06—Nets, catchers, or the like for catching obstacles or removing them from the track
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like

Definitions

  • the present invention relates to a stone thrower, that is to say a device placed at the front of the locomotives and intended to reject obstacles (stones, etc.) fallen or placed on the rails.
  • Such devices have been known for a long time. They include, for each wheel of the front axle of the locomotive, an arm integral with the axle box or the chassis of the bogie and which extends by bending in the direction of the rail so that its end comes in front of the wheel .
  • Document FR-A-2 653 729 describes one of these devices. It comprises an elongated support, a first end of which is made integral with the front axle of the vehicle. The second end of the support supports an impact piece, placed in front of the wheel and near the rail, via an energy absorption device.
  • the energy absorption device comprises a first plate to which the impact piece is fixed. This first plate is articulated to a second plate fixed to the second end of the elongated support, the two plates being parallel to each other.
  • These trays are kept at a constant distance from each other. They have housings for studs which rotate the two plates. In the event of an impact on the impact part, a force is transmitted from this part to the first plate. If the force is greater than the elastic limit of the set of studs, these become deformed, which produces a rotation of the first plate and a displacement of the impact piece.
  • This device has the advantage that in the event of a violent impact, it suffices to replace the studs which have deformed. It has a relatively long support, at the end of which is fixed in overhang the energy absorption device and the impact part.
  • the support is metallic and, although it can be of honeycomb structure, it constitutes with the energy absorption device and the impact part, a significant mass which is not amortized since fixed directly on the box. 'axle. This large mass can lead to a phenomenon of fatigue of its connections on the axle box. There is therefore a risk of breakage of one of the links and, because of the significant vibrations of the axle, a risk of detachment of the rocker.
  • the energy absorption device being, according to this document, placed at the end of the support and in a plane parallel to the corresponding wheel, the center of gravity of this part of the device is located in the plane of the wheel. In the event of detachment of the rocker, there is a risk that it, driven by the weight of its front part, falls on the rail which could be dangerous.
  • the stone thrower according to the invention overcomes these drawbacks. Its weight is reduced thanks to the use of composite material to make the support. On the other hand, provision has been made to offset its center of gravity with respect to the vertical plane passing through the rail. Thus, in the event of a stall, the rocker will fall off the rails.
  • the production of the composite material support provides, in addition to a reduction in weight, the advantage of better damping than a metal beam.
  • the support absorbs, to a certain extent, the forces resulting from impacts on the impact part.
  • the subject of the invention is therefore a stone thrower comprising, for each of the front wheels of a rail vehicle, an elongated support of which a first end is made integral with the front axle of the vehicle by fixing means, and a part impact placed in front of the wheel and close to the rail, the impact piece being fixed to an energy absorbing device fixed to the second end of the elongated support, characterized in that the elongated support is made of composite material , the energy absorbing device being arranged on the support so as to offset the center of gravity of the stone thruster relative to the vertical plane passing through the rail.
  • the energy absorption device can be arranged above the support.
  • It may comprise a first plate to which the impact piece is fixed, the first plate being articulated to a second plate fixed to the second end of the elongated support and parallel to the first plate, the plates being maintained at a constant distance one of the other, at least one stud being engaged by one end in a bore of the first plate and by a second end in a bore of the second plate.
  • the means of fixing the support may advantageously comprise connecting elements allowing the transmission of the forces to the front axle of the vehicle.
  • the first end of the elongated support can advantageously constitute the sub-guard of the corresponding axle part.
  • the elongated support may be made of a composite material based on glass fibers.
  • the first plate can be used as a support for an auxiliary member, for example a sandblasting pipe or a lubrication pipe.
  • Figure 1 shows the front part of a rail vehicle bogie, seen from the side and in elevation. We recognize the chassis 10 of the bogie resting by means of springs 11 of primary suspension on the axle box 12.
  • the rocker 1 is made integral with the front axle of the vehicle by the rear end of the elongated support 2 playing the role of sub-guard for the axle box.
  • the front end of the support 2 supports the energy absorption device 3, which supports the impact piece 4 and the end of the sandblasting pipe 5, the nozzle 51 of which is thus located near the rail 7 and the corresponding wheel 13.
  • Figure 2 is a side view of the rocker which is seen from a position between the rails.
  • Figure 3 is a top view of the rock cutter.
  • FIG. 4 is a view according to section IV-IV of FIG. 2.
  • the elongate support 2 made for example of composite material based on glass fibers, is formed by assembling two longitudinal parts: an upper part 21 and a lower part 22. The assembly of these two parts gives a hollow support.
  • the support is made integral with the axle box by connecting elements 23 and 24 which will be detailed later.
  • the front end of the support carries the energy absorption device 3 of the type described in document FR-A-2 653 729.
  • the device 3 comprises a first plate 31 to which the impact piece 4 is fixed so arranged to be about 40 mm above the rail.
  • the plate 31 is articulated to a second plate 32 secured to the support 2.
  • the plates 31 and 32 are mutually parallel.
  • the plate 32 preferably circular, is made integral with the support 2 by means of a support part 25. It is provided with a central protuberance 33 serving as an axis of rotation to the plate 31. The end of this protuberance is threaded and a nut 34, associated with washers 35 and 36, makes it possible to hold the plate 31.
  • the plates 31 and 32 are kept at a fixed distance from each other by means of a shoulder of the protuberance 33 on which the plate 31 rests.
  • Metal studs 37 connect the plates 31 and 32, their ends engaging in opposite holes made in these plates.
  • the studs are arranged parallel to the axis of articulation 38 of the plate 31.
  • the energy absorption device 3 being placed above the elongated support 2, the plates 31 and 32 are in oblique planes relative to the railroad track.
  • the plate 31 extends as far as the plane of the wheel 13 to support the impact piece 4.
  • the plate 31 and the impact piece 4 have notched surfaces facing each other. The fixing between the plate 31 and the impact piece 4 is carried out by the screw 41 and the nut 42, after adjustment of the height of the impact piece relative to the rail.
  • Hose clamps 43 allow the fixing of the sandblasting pipe 5 on the piece of imapct 4.
  • the plate 31 and the impact piece 4 can be made of aluminum; the plate 32 can be made of steel. This contributes to the offset of the center of gravity of the rocker compared to the plane of the wheel.
  • the plate 32 is fixed to an oblique face of the support part 25 by four screws 39.
  • the support part 25 can be made of aluminum.
  • the support 2 is subjected in normal operation to numerous constraints. Its structure and its method of attachment must allow it to withstand all these constraints. Figures 4, 5 and 6 allow a better view of its constitution.
  • the parts 21 and 22 of the support 2 are assembled by gluing and riveting. Before their assembly, different elements have been put in place or provided for the good transmission of forces.
  • the section of the support 2 visible in FIG. 4 shows the presence of spacers 61 between the upper and lower faces of the support 2. They make it possible to avoid the so-called "drum skin” phenomena between these two faces.
  • These spacers can be made of aluminum. They are four in number since the support part 25 uses, for its fixing, four bolts 62 fitted with self-locking nuts (see FIG. 3). Sockets 64 surrounding the bolts 62 allow the transmission of shear forces between the metal parts and the composite parts. Washers 65, sufficiently wide, allow a good distribution of the forces exerted by the heads of the bolts 62.
  • the connecting element 24, visible in section in FIG. 5, comprises a horizontal plate 71 of steel onto which are welded two vertical flanges 72 also of steel, the assembly making it possible to cover the support 2.
  • the plate 71 has two holes 73 (visible in Figure 3) allowing its attachment to the axle box.
  • the upper part 21 of the support 2 has upper 74 and lateral 75 inserts (only one of which is shown) used for fixing the support 2 to the connecting element 24 by means of screws 76 and 77.
  • Metal rings 78 allow the transmission of shear forces between the metal parts and the composite parts.
  • the connecting element 23, visible in section in FIG. 6, comprises a horizontal plate 81 of steel onto which vertical gussets 82, also of steel, are fixed by bolting, the assembly making it possible to cover the support 2.
  • the plate 81 comprises two holes 83 (also visible in FIG. 3) allowing the element 23 to be fixed to the box god.
  • the upper part 21 of the support 2 has upper 84 and lateral 85 inserts (only one of which is shown) used for fixing the support 2 to the connecting element 23 using screws 86, 87 and 88.
  • a preload of the support 2 is obtained by bolts 86, 87 and 88 fitted with self-locking nuts 96, 97 and 98.
  • spring washers for example 91 and 92, make it possible to compensate for the creep of the composite material.
  • the rings 93, 94 and 95 allow the transmission of shear forces between the metal elements and the elements made of composite material.
  • the nut 96 rests on a shoulder washer which extends opposite the ring 93.
  • the upper insert 84 has a groove for immobilizing the head of the screw 86, which facilitates the tightening of the screw. The same goes for the side inserts 85 with respect to the self-locking nuts 97 and 98.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vibration Dampers (AREA)
  • Vibration Prevention Devices (AREA)
  • Emergency Lowering Means (AREA)
  • Body Structure For Vehicles (AREA)
  • Handcart (AREA)

Abstract

The invention relates to a rail guard comprising, for each of the front wheels of a vehicle on rails, an elongate support (2), a first end of which is rendered integral with the front axle of the vehicle by fastening means, and an impact component (4) placed in front of the wheel (13) and close to the rail, the impact component being fastened to an energy-absorption device (3) fastened to the second end of the elongate support, characterised in that the elongate support is produced from a composite material, the energy-absorption device (3) being located on the support (2) so as to offset the centre of gravity of the rail guard (1) with respect to the vertical plane passing through the rail. <IMAGE>

Description

La présente invention concerne un chasse-pierres, c'est-à-dire un dispositif placé à l'avant des locomotives et destiné à rejeter les obstacles (pierres, etc...) tombés ou placés sur les rails.The present invention relates to a stone thrower, that is to say a device placed at the front of the locomotives and intended to reject obstacles (stones, etc.) fallen or placed on the rails.

De tels appareils sont connus de longue date. Ils comprennent, pour chaque roue de l'essieu avant de la locomotive, un bras solidaire de la boîte d'essieu ou du châssis du bogie et qui s'étend en s'incurvant en direction du rail pour que son extrémité vienne devant la roue.Such devices have been known for a long time. They include, for each wheel of the front axle of the locomotive, an arm integral with the axle box or the chassis of the bogie and which extends by bending in the direction of the rail so that its end comes in front of the wheel .

Le document FR-A-2 653 729 décrit l'un de ces appareils. Il comprend un support allongé dont une première extrémité est rendue solidaire de l'essieu avant du véhicule. La seconde extrémité du support supporte une pièce d'impact, placée devant la roue et à proximité du rail, par l'intermédiaire d'un dispositif d'absorption d'énergie. Le dispositif d'absorption d'énergie comprend un premier plateau auquel est fixée la pièce d'impact. Ce premier plateau est articulé à un second plateau fixé à la seconde extrémité du support allongé, les deux plateaux étant parallèle entre eux. Ces plateaux sont maintenus à une distance constante l'un de l'autre. Ils possèdent des logements pour des goujons liant en rotation les deux plateaux. En cas de choc sur la pièce d'impact, un effort est transmis de cette pièce vers le premier plateau. Si l'effort est supérieur à la limite élastique de l'ensemble des goujons, ceux-ci se déforment, ce qui produit une rotation du premier plateau et un déplacement de la pièce d'impact.Document FR-A-2 653 729 describes one of these devices. It comprises an elongated support, a first end of which is made integral with the front axle of the vehicle. The second end of the support supports an impact piece, placed in front of the wheel and near the rail, via an energy absorption device. The energy absorption device comprises a first plate to which the impact piece is fixed. This first plate is articulated to a second plate fixed to the second end of the elongated support, the two plates being parallel to each other. These trays are kept at a constant distance from each other. They have housings for studs which rotate the two plates. In the event of an impact on the impact part, a force is transmitted from this part to the first plate. If the force is greater than the elastic limit of the set of studs, these become deformed, which produces a rotation of the first plate and a displacement of the impact piece.

Cet appareil présente l'avantage qu'en cas de choc violent, il suffit de remplacer les goujons qui se sont déformés. Il comporte un support relativement long, au bout duquel est fixé en porte-à-faux le dispositif d'absorption d'énergie et la pièce d'impact. Le support est métallique et, bien qu'il puisse être de structure alvéolée, il constitue avec le dispositif d'absorption d'énergie et la pièce d'impact, une masse importante qui n'est pas amortie puisque fixée directement sur la boîte d'essieu. Cette masse importante peut conduire à un phénomène de fatigue de ses liaisons sur la boîte d'essieu. Il y a donc un risque de rupture de l'une des liaisons et, à cause des vibrations importantes de l'essieu, un risque de décrochement du chasse-pierres.This device has the advantage that in the event of a violent impact, it suffices to replace the studs which have deformed. It has a relatively long support, at the end of which is fixed in overhang the energy absorption device and the impact part. The support is metallic and, although it can be of honeycomb structure, it constitutes with the energy absorption device and the impact part, a significant mass which is not amortized since fixed directly on the box. 'axle. This large mass can lead to a phenomenon of fatigue of its connections on the axle box. There is therefore a risk of breakage of one of the links and, because of the significant vibrations of the axle, a risk of detachment of the rocker.

Le dispositif d'absorption, d'énergie étant, selon ce document, placé à l'extrémité du support et dans un plan parallèle à la roue correspondante, le centre de gravité de cette partie de l'appareil se situe dans le plan de la roue. En cas de décrochement du chasse-pierres, il y a un risque que celui-ci, entraîné par le poids de sa partie avant, tombe sur le rail ce qui pourrait être dangereux.The energy absorption device being, according to this document, placed at the end of the support and in a plane parallel to the corresponding wheel, the center of gravity of this part of the device is located in the plane of the wheel. In the event of detachment of the rocker, there is a risk that it, driven by the weight of its front part, falls on the rail which could be dangerous.

Le chasse-pierres selon l'invention permet de pallier ces inconvénients. Son poids est allégé grâce à l'utilisation de matériau composite pour réaliser le support. D'autre part, on a prévu de décaler son centre de gravité par rapport au plan vertical passant par le rail. Ainsi, en cas de décrochage, le chasse-pierres chutera en dehors des rails.The stone thrower according to the invention overcomes these drawbacks. Its weight is reduced thanks to the use of composite material to make the support. On the other hand, provision has been made to offset its center of gravity with respect to the vertical plane passing through the rail. Thus, in the event of a stall, the rocker will fall off the rails.

La réalisation du support en matériau composite procure, outre une réduction de poids, l'avantage d'un meilleur amortissement qu'une poutre métallique. Le support absorbe, dans une certaine mesure, les efforts consécutifs aux chocs sur la pièce d'impact.The production of the composite material support provides, in addition to a reduction in weight, the advantage of better damping than a metal beam. The support absorbs, to a certain extent, the forces resulting from impacts on the impact part.

L'invention a donc pour objet un chasse-pierres comprenant, pour chacune des roues avant d'un véhicule sur rail, un support allongé dont une première extrémité est rendue solidaire de l'essieu avantdu véhicule par des moyens de fixation, et une pièce d'impact placée devant la roue et à proximité du rail, la pièce d'impact étant fixée à un dispositif d'absorption d'énergie fixé à la seconde extrémité du support allongé, caractérisé en ce que le support allongé est réalisé en matériau composite, le dispositif d'absorption d'énergie étant disposé sur le support de manière à décaler le centre de gravité du chasse-pierres par rapport au plan vertical passant par le rail.The subject of the invention is therefore a stone thrower comprising, for each of the front wheels of a rail vehicle, an elongated support of which a first end is made integral with the front axle of the vehicle by fixing means, and a part impact placed in front of the wheel and close to the rail, the impact piece being fixed to an energy absorbing device fixed to the second end of the elongated support, characterized in that the elongated support is made of composite material , the energy absorbing device being arranged on the support so as to offset the center of gravity of the stone thruster relative to the vertical plane passing through the rail.

Le dispositif d'absorption d'énergie peut être disposé au-dessus du support.The energy absorption device can be arranged above the support.

Il peut comporter un premier plateau auquel est fixé la pièce d'impact, le premier plateau étant articulé à un second plateau fixé à la seconde extrémité du support allongé et parallèle au premier plateau, les plateaux étant maintenus à une distance constante l'un de l'autre, au moins un goujon étant engagé par une extrémité dans un alésage du premier plateau et par une seconde extrémité dans un alésage du second plateau.It may comprise a first plate to which the impact piece is fixed, the first plate being articulated to a second plate fixed to the second end of the elongated support and parallel to the first plate, the plates being maintained at a constant distance one of the other, at least one stud being engaged by one end in a bore of the first plate and by a second end in a bore of the second plate.

Les moyens de fixation du support peuventavan- tageusement comprendre des éléments de liaison permettant la transmission des efforts vers l'essieu avant du véhicule.The means of fixing the support may advantageously comprise connecting elements allowing the transmission of the forces to the front axle of the vehicle.

La première extrémité du support allongé peut avantageusement constituer la sous-garde de la partie d'essieu correspondante.The first end of the elongated support can advantageously constitute the sub-guard of the corresponding axle part.

Le support allongé peut être en matériau composite à base de fibres de verre.The elongated support may be made of a composite material based on glass fibers.

Le premier plateau peut être utilisé comme support pour un organe auxiliaire, par exemple un tuyau de sablage ou un conduit de graissage.The first plate can be used as a support for an auxiliary member, for example a sandblasting pipe or a lubrication pipe.

L'invention sera mieux comprise et d'autres avantages et particularités apparaîtront à la lecture de la description qui va suivre, donnée à titre non limitatif, accompagnée des dessins annexés parmi lesquels:

  • - la figure 1 est une vue partielle, en élévation, d'une bogie équipé du chasse-pierres selon l'invention,
  • - les figures 2, 3 et 4 sont des vues respectivement de face, de dessus et de côté du chasse-pierres selon l'invention,
  • - les figures 5 et 6 sont des vues en coupe montrant des détails du chasse-pierres selon l'invention.
The invention will be better understood and other advantages and particularities will appear on reading the description which follows, given without limitation, accompanied by the appended drawings among which:
  • FIG. 1 is a partial view, in elevation, of a bogie equipped with the stone thrower according to the invention,
  • FIGS. 2, 3 and 4 are respectively front, top and side views of the stone stripper according to the invention,
  • - Figures 5 and 6 are sectional views showing details of the stone thrower according to the invention.

La figure 1 montre la partie avant d'un bogie de véhicule-ferroviaire, vu de côté et en élévation. On reconnaît le châssis 10 du bogie reposant par l'intermédiaire de ressorts 11 de suspension primaire sur la boîte d'essieu 12.Figure 1 shows the front part of a rail vehicle bogie, seen from the side and in elevation. We recognize the chassis 10 of the bogie resting by means of springs 11 of primary suspension on the axle box 12.

Le chasse-pierres 1 est rendu solidaire de l'essieu avant du véhicule par l'extrémité arrière du support allongé 2jouant le rôle de sous-garde pour la boîte d'essieu. L'extrémité avant du support 2 supporte le dispositif d'absorption d'énergie 3, lequel supporte la pièce d'impact 4 et l'extrémité du tuyau de sablage 5 dont la buse 51 se trouve ainsi à proximité du rail 7 et de la roue correspondante 13.The rocker 1 is made integral with the front axle of the vehicle by the rear end of the elongated support 2 playing the role of sub-guard for the axle box. The front end of the support 2 supports the energy absorption device 3, which supports the impact piece 4 and the end of the sandblasting pipe 5, the nozzle 51 of which is thus located near the rail 7 and the corresponding wheel 13.

La figure 2 est une vue de côté du chasse-pierres qui est vu d'une position située entre les rails. La figure 3 est une vue de dessus du chasse-pierres. La figure 4 est une vue selon la coupe IV-IV de la figure 2.Figure 2 is a side view of the rocker which is seen from a position between the rails. Figure 3 is a top view of the rock cutter. FIG. 4 is a view according to section IV-IV of FIG. 2.

Le support allongé 2, réalisé par exemple en matériau composite à base de fibres de verre, est formé par assemblage de deux parties longitudinales: une partie supérieure 21 et une partie inférieure 22. L'assemblage de ces deux parties donne un support creux.The elongate support 2, made for example of composite material based on glass fibers, is formed by assembling two longitudinal parts: an upper part 21 and a lower part 22. The assembly of these two parts gives a hollow support.

Le support est rendu solidaire de la boîte d'essieu par des éléments de liaison 23 et 24 qui seront détaillés par la suite.The support is made integral with the axle box by connecting elements 23 and 24 which will be detailed later.

L'extrémité avant du support porte le dispositif d'absorption d'énergie 3 du type décrit dans le document FR-A-2 653 729. Le dispositif 3 comprend un premier plateau 31 auquel est fixée la pièce d'impact 4 disposée de manière à se trouver à environ 40 mm au-dessus du rail. Le plateau 31 est articulé à un second plateau 32 solidaire du support 2. Les plateaux 31 et 32 sont parallèles entre eux.The front end of the support carries the energy absorption device 3 of the type described in document FR-A-2 653 729. The device 3 comprises a first plate 31 to which the impact piece 4 is fixed so arranged to be about 40 mm above the rail. The plate 31 is articulated to a second plate 32 secured to the support 2. The plates 31 and 32 are mutually parallel.

Le plateau 32, de préférence circulaire, est rendu solidaire du support 2 par l'intermédiaire d'une pièce support 25. Il est muni d'une protubérance centrale 33 servant d'axe de rotation au plateau 31. L'extrémité de cette protubérance est filetée et un écrou 34, associé à des rondelles 35 et 36, permet le maintien du plateau 31.The plate 32, preferably circular, is made integral with the support 2 by means of a support part 25. It is provided with a central protuberance 33 serving as an axis of rotation to the plate 31. The end of this protuberance is threaded and a nut 34, associated with washers 35 and 36, makes it possible to hold the plate 31.

Les plateaux 31 et 32 sont maintenus à une distance fixe l'un de l'autre grâce à un épaulement de la protubérance 33 sur lequel repose le plateau 31. Des goujons métalliques 37 relient les plateaux 31 et 32, leurs extrémités s'engageant dans des trous en vis-à-vis pratiqués dans ces plateaux. Les goujons sont disposés parallèlement à l'axe d'articulation 38 du plateau 31.The plates 31 and 32 are kept at a fixed distance from each other by means of a shoulder of the protuberance 33 on which the plate 31 rests. Metal studs 37 connect the plates 31 and 32, their ends engaging in opposite holes made in these plates. The studs are arranged parallel to the axis of articulation 38 of the plate 31.

Le dispositif d'absorption d'énergie 3 étantdis posé au-dessus du support allongé 2, les plateaux 31 et 32 sont dans des plans obliques par rapport à la voie ferrée. Le plateau 31 se prolonge jusque dans le plan de la roue 13 pour supporter la pièce d'impact 4.The energy absorption device 3 being placed above the elongated support 2, the plates 31 and 32 are in oblique planes relative to the railroad track. The plate 31 extends as far as the plane of the wheel 13 to support the impact piece 4.

Il est possible de régler la hauteur de la pièce d'impact 4 par rapport au rai Ce réglage s'avère nécessaire au furet à mesure de l'usure de la roue. Pour cela, le plateau 31 et la pièce d'impact 4 possèdent des surfaces crantées se faisant face. La fixation entre le plateau 31 et la pièce d'impact4 est réalisée par la vis 41 et l'écrou 42, après ajustement de la hauteur de la pièce d'impact par rapport au rail.It is possible to adjust the height of the impact piece 4 relative to the spoke. This adjustment is necessary as the ferret increases as the wheel wears. For this, the plate 31 and the impact piece 4 have notched surfaces facing each other. The fixing between the plate 31 and the impact piece 4 is carried out by the screw 41 and the nut 42, after adjustment of the height of the impact piece relative to the rail.

Des colliers de serrage 43 permettent la fixation du tuyau de sablage 5 sur la pièce d'imapct 4.Hose clamps 43 allow the fixing of the sandblasting pipe 5 on the piece of imapct 4.

Le plateau 31 et la pièce d'impact 4 peuvent être réalisés en aluminium; le plateau 32 peut être réalisé en acier. Ceci contribue au décalage du centre de gravité du chasse-pierres par rapport au plan de la roue.The plate 31 and the impact piece 4 can be made of aluminum; the plate 32 can be made of steel. This contributes to the offset of the center of gravity of the rocker compared to the plane of the wheel.

Le plateau 32 est fixé sur un pan oblique de la pièce support 25 par quatre vis 39. La pièce support 25 peut être en aluminium.The plate 32 is fixed to an oblique face of the support part 25 by four screws 39. The support part 25 can be made of aluminum.

Le support 2 est soumis en fonctionnement normal à de nombreuses contraintes. Sa structure et son mode de fixation doivent lui permettre de supporter toutes ces contraintes. Les figures 4, 5 et 6 permettent de mieux voir sa constitution.The support 2 is subjected in normal operation to numerous constraints. Its structure and its method of attachment must allow it to withstand all these constraints. Figures 4, 5 and 6 allow a better view of its constitution.

Les parties 21 et 22 du support 2 sont assemblées par collage et rivetage. Avanc leur assemblage, on a mis en place ou prévu différents éléments permettant la bonne transmission des efforts.The parts 21 and 22 of the support 2 are assembled by gluing and riveting. Before their assembly, different elements have been put in place or provided for the good transmission of forces.

La coupe du support 2 visible à la figure 4 montre la présence d'entretoises 61 entre les faces supérieure et inférieure du support 2. Elles permettent d'éviter les phénomènes dits de "peau de tambour" entre ces deux faces. Ces entretoises peuvent être en aluminium. Elles sont au nombre de quatre puisque la pièce support 25 utilise, pour sa fixation, quatre boulons 62 équipés d'écrous auto-freinés (voir figure 3). Des douilles 64 entourant les boulons 62 permettent la transmission des efforts de cisaillement entre les parties métalliques et les parties en composite. Des rondelles 65, suffisamment larges, permettent une bonne répartition des efforts exercés par les têtes des boulons 62.The section of the support 2 visible in FIG. 4 shows the presence of spacers 61 between the upper and lower faces of the support 2. They make it possible to avoid the so-called "drum skin" phenomena between these two faces. These spacers can be made of aluminum. They are four in number since the support part 25 uses, for its fixing, four bolts 62 fitted with self-locking nuts (see FIG. 3). Sockets 64 surrounding the bolts 62 allow the transmission of shear forces between the metal parts and the composite parts. Washers 65, sufficiently wide, allow a good distribution of the forces exerted by the heads of the bolts 62.

L'élément de liaison 24, visible en coupe à la figure 5, comprend une platine horizontale 71 en acier sur laquelle sont soudés deux flasques verticaux 72 également en acier, l'ensemble permettant de coiffer le support 2. La platine 71 comporte deux trous 73 (visibles sur la figure 3) permettant sa fixation sur la boîte d'essieu. La partie supérieure 21 du support 2 comporte des inserts supérieur 74 et latéraux 75 (dont un seul est représenté) servant à la fixation du support 2 sur l'élément de liaison 24 grâce à des vis 76 et 77. Des bagues métalliques 78 permettent la transmission des efforts de cisaillement entre les parties métalliques et les parties en composite.The connecting element 24, visible in section in FIG. 5, comprises a horizontal plate 71 of steel onto which are welded two vertical flanges 72 also of steel, the assembly making it possible to cover the support 2. The plate 71 has two holes 73 (visible in Figure 3) allowing its attachment to the axle box. The upper part 21 of the support 2 has upper 74 and lateral 75 inserts (only one of which is shown) used for fixing the support 2 to the connecting element 24 by means of screws 76 and 77. Metal rings 78 allow the transmission of shear forces between the metal parts and the composite parts.

L'élément de liaison 23, visible en coupe à la figure 6, comprend une platine horizontale 81 en acier sur laquelle sont fixés par boulonnage des goussets verticaux 82 également en acier, l'ensemble permettant de coiffer le support 2. La platine 81 comporte deux trous 83 (visibles également sur la figure 3) permettant la fixation de l'élément 23 sur la boîte d'essieu. La partie supérieure 21 du support 2 comporte des inserts supérieur 84 et latéraux 85 (dont un seul est représenté) servant à la fixation du support 2 sur l'élément de liaison 23 grâce à des vis 86, 87 et 88. Une précharge du support 2 est obtenue par les boulons 86, 87 et 88 équipés d'écrous auto-freinés 96, 97 et 98. En série avec les boulons, des rondelles ressorts, par exemple 91 et 92, permettent de compenser le fluage du matériau composite. Les bagues 93, 94 et 95 permettent la transmission des efforts de cisaillement entre les éléments métalliques et les éléments en matériau composite.The connecting element 23, visible in section in FIG. 6, comprises a horizontal plate 81 of steel onto which vertical gussets 82, also of steel, are fixed by bolting, the assembly making it possible to cover the support 2. The plate 81 comprises two holes 83 (also visible in FIG. 3) allowing the element 23 to be fixed to the box god. The upper part 21 of the support 2 has upper 84 and lateral 85 inserts (only one of which is shown) used for fixing the support 2 to the connecting element 23 using screws 86, 87 and 88. A preload of the support 2 is obtained by bolts 86, 87 and 88 fitted with self-locking nuts 96, 97 and 98. In series with the bolts, spring washers, for example 91 and 92, make it possible to compensate for the creep of the composite material. The rings 93, 94 and 95 allow the transmission of shear forces between the metal elements and the elements made of composite material.

L'écrou 96 repose sur une rondelle épaulée qui se prolonge en vis-à-vis de la bague 93.The nut 96 rests on a shoulder washer which extends opposite the ring 93.

L'insert supérieur 84 comporte une rainure d'immobilisation de la tête de la vis 86, ce qui facilite le serrage de la vis. Il en va de même pour les inserts latéraux 85 vis-à-vis des écrous auto-freinés 97 et 98.The upper insert 84 has a groove for immobilizing the head of the screw 86, which facilitates the tightening of the screw. The same goes for the side inserts 85 with respect to the self-locking nuts 97 and 98.

Claims (7)

1/ Chasse-pierres comprenant, pour chacune des roues avant d'un véhicule sur rail, un support allongé (2) dont une première extrémité est rendue solidaire de l'essieu avant du véhicule par des moyens de fixation, et une pièce d'impact (4) placée devant la roue (13) et à proximité du rail (7), la pièce d'impact étant fixée à un dispositif d'absorption d'énergie (3) fixé à la seconde extrémité du support allongé, caractérisé en ce que le support allongé est réalisé en matériau composite, le dispositif d'absorption d'énergie (3) étant disposé sur le support (2) de manière à décaler le centre de gravité du chasse-pierres (1) par rapport au plan vertical passant par le rail.1 / Stone punch comprising, for each of the front wheels of a rail vehicle, an elongated support (2), a first end of which is made integral with the front axle of the vehicle by fixing means, and a piece of impact (4) placed in front of the wheel (13) and close to the rail (7), the impact piece being fixed to an energy absorption device (3) fixed to the second end of the elongated support, characterized in that the elongated support is made of composite material, the energy absorption device (3) being arranged on the support (2) so as to offset the center of gravity of the stone striker (1) relative to the vertical plane passing through the rail. 2/ Chasse-pierres selon la revendication 1, caractérisé en ce que le dispositif d'absorption d'énergie (3) est disposé au-dessus du support (2).2 / Stone chaser according to claim 1, characterized in that the energy absorption device (3) is arranged above the support (2). 3/ Chasse-pierres selon l'une des revendications 1 ou 2, caractérisé en ce que le dispositif d'absorption d'énergie comporte un premier plateau (31) auquel est fixé la pièce d'impact (4), le premier plateau étant articulé à un second plateau (32) fixé à la seconde extrémité du support allongé (2) et parallèle au premier plateau, les plateaux étant maintenus à une distance constante l'un de l'autre, au moins un goujon (37) étant engagé par une extrémité dans un alésage du premier plateau et par une seconde extrémité dans un alésage du second plateau.3 / Stone chaser according to one of claims 1 or 2, characterized in that the energy absorption device comprises a first plate (31) to which the impact piece (4) is fixed, the first plate being articulated to a second plate (32) fixed to the second end of the elongated support (2) and parallel to the first plate, the plates being kept at a constant distance from each other, at least one stud (37) being engaged by one end in a bore of the first plate and by a second end in a bore of the second plate. 4/ Chasse-pierres selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les moyens de fixation du support comprennent des éléments de liaison (23, 24) permettant la transmission des efforts vers l'essieu avant du véhicule.4 / Stone chaser according to any one of claims 1 to 3, characterized in that the means for fixing the support comprise connecting elements (23, 24) allowing the transmission of forces to the front axle of the vehicle. 5/ Chasse-pierres selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ladite première extrémité du support allongé (2) constitue la sous-garde de la partie d'essieu correspondante.5 / Stone chaser according to any one of claims 1 to 4, characterized in that said first end of the elongated support (2) constitutes the sub-guard of the corresponding axle part. 6/ Chasse-pierres selon l'une quelconque des revendications 1 à 5, caractérisé en ce que le support allongé est en matériau composite à base de fibres de verre.6 / Stone chaser according to any one of claims 1 to 5, characterized in that the elongated support is made of composite material based on glass fibers. 7/ Chasse-pierres selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit premier plateau (31) est utilisé comme support pour un organe auxiliaire, par exemple un tuyau de sablage (5) ou un conduit de graissage.7 / Stone chaser according to any one of the preceding claims, characterized in that said first plate (31) is used as a support for an auxiliary member, for example a sandblasting pipe (5) or a lubrication duct.
EP93403165A 1992-12-29 1993-12-24 Rail guard Ceased EP0607723A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9215832 1992-12-29
FR9215832A FR2699878B1 (en) 1992-12-29 1992-12-29 Stone Chaser.

Publications (1)

Publication Number Publication Date
EP0607723A1 true EP0607723A1 (en) 1994-07-27

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Application Number Title Priority Date Filing Date
EP93403165A Ceased EP0607723A1 (en) 1992-12-29 1993-12-24 Rail guard

Country Status (9)

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EP (1) EP0607723A1 (en)
JP (1) JPH06227393A (en)
KR (1) KR940014042A (en)
CN (1) CN1094681A (en)
AU (1) AU5273593A (en)
BR (1) BR9305273A (en)
CA (1) CA2112436A1 (en)
FR (1) FR2699878B1 (en)
NO (1) NO934820L (en)

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AT518036A1 (en) * 2015-12-10 2017-06-15 Siemens Ag Oesterreich Suspension for a rail vehicle

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Publication number Priority date Publication date Assignee Title
DE29914293U1 (en) * 1999-08-10 2000-12-21 Fischer Reinhard Rail-guided handling equipment trolley
FR2801554B1 (en) 1999-11-30 2002-02-01 Anf Ind DEVICE FOR CONTROLLED DEFORMATION UNDER EFFORTS OR FOR ENERGY ABSORPTION BY DEFORMATION, IN PARTICULAR OBSTACLE DEFLECTOR FOR RAIL VEHICLE
CN1323004C (en) * 2003-04-16 2007-06-27 川崎重工业株式会社 Support structure of obstacle eliminating plate of stock
KR101252546B1 (en) * 2011-04-21 2013-04-08 현대로템 주식회사 dwnward rotation of the axle boxes for railway vehicles blocking device
CN102806927A (en) * 2011-06-02 2012-12-05 中国北车集团大同电力机车有限责任公司 Locomotive cowcatcher and locomotive
CN102806922B (en) * 2011-06-03 2015-05-20 中国北车集团大同电力机车有限责任公司 Axle box assembly with sand spraying and stone removing device and locomotive with axle box
JP6496168B2 (en) * 2014-06-26 2019-04-03 日本車輌製造株式会社 Railcar bogie with axle box structure
JP6397666B2 (en) * 2014-06-27 2018-09-26 西日本旅客鉄道株式会社 Device
PL3109124T3 (en) 2015-06-23 2019-10-31 Alstom Transp Tech A railway bogie with a winterproof piping and wiring protecting impact guard
JP6557595B2 (en) * 2015-12-25 2019-08-07 川崎重工業株式会社 Railcar bogie
CN107054396B (en) * 2017-04-07 2019-03-22 中车青岛四方机车车辆股份有限公司 A kind of rail vehicle truck oil guard

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR829507A (en) * 1937-02-23 1938-06-29 Anciens Etablissements Billard Constant height stone chaser for vehicles running on rails
DE1605830A1 (en) * 1968-02-13 1971-08-05 Huebner Kg Kurt Device on rail vehicles for clearing away obstacles on the rail

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR829507A (en) * 1937-02-23 1938-06-29 Anciens Etablissements Billard Constant height stone chaser for vehicles running on rails
DE1605830A1 (en) * 1968-02-13 1971-08-05 Huebner Kg Kurt Device on rail vehicles for clearing away obstacles on the rail

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT518036A1 (en) * 2015-12-10 2017-06-15 Siemens Ag Oesterreich Suspension for a rail vehicle

Also Published As

Publication number Publication date
KR940014042A (en) 1994-07-16
JPH06227393A (en) 1994-08-16
AU5273593A (en) 1994-07-14
CN1094681A (en) 1994-11-09
FR2699878A1 (en) 1994-07-01
CA2112436A1 (en) 1994-06-30
BR9305273A (en) 1994-07-05
FR2699878B1 (en) 1995-02-10
NO934820D0 (en) 1993-12-27
NO934820L (en) 1994-06-30

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