EP0677127B1 - Rail clip insulator - Google Patents

Rail clip insulator Download PDF

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Publication number
EP0677127B1
EP0677127B1 EP94902863A EP94902863A EP0677127B1 EP 0677127 B1 EP0677127 B1 EP 0677127B1 EP 94902863 A EP94902863 A EP 94902863A EP 94902863 A EP94902863 A EP 94902863A EP 0677127 B1 EP0677127 B1 EP 0677127B1
Authority
EP
European Patent Office
Prior art keywords
pad according
face
clip
central
sleeper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94902863A
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German (de)
French (fr)
Other versions
EP0677127A1 (en
Inventor
Claude Loison
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.)
Allevard SA
Original Assignee
Allevard SA
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Filing date
Publication date
Priority claimed from FR9215860A external-priority patent/FR2699942B1/en
Application filed by Allevard SA filed Critical Allevard SA
Publication of EP0677127A1 publication Critical patent/EP0677127A1/en
Application granted granted Critical
Publication of EP0677127B1 publication Critical patent/EP0677127B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
    • E01B9/306—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips the clip being a shaped plate
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips

Definitions

  • the present invention relates to an insulating stop for a rail fastener.
  • the insulating lateral stops have very varied geometries depending on the fixing system of which they are a part. They are generally made of a plastic material allowing a good compromise to be obtained between mechanical and electrical properties.
  • the known insulating stops comprise a front part for bearing against the shoe of the rail, a base resting in a corresponding housing of the cross member, an upper part for supporting the fastener provided with means for supporting the rear end of said fastener and a central through hole for the passage of an anchoring member and a rear part provided with a wedging face against the rear wall of the cross member housing.
  • the present invention aims to solve the above technical problems by providing that the upper part has a central depression whose bottom is inclined downward from front to rear, which is laterally flanked by two symmetrical reinforcing ribs and limited towards the rear by the support means of the fastener.
  • the central through hole is extended upward by a portion of cylinder to open into the depression slightly above the upper face of the ribs.
  • the inclined bottom communicates at the rear with a groove made through the support means of the fastener and opening out at the rear part.
  • each reinforcing rib is connected by its outer edge to a lateral wing.
  • said support means of the rear end of the fastener consist of two symmetrical cradles connected transversely to the respective rear end of each rib and the two cradles are arranged on either side of said groove at the upper face of the ribs.
  • the base comprises a central inclined face corresponding to the underside of the depression, bordered by two concave lateral spoils.
  • the lower end of the remains and that of the inclined face are joined by a transverse support face which transmits to the cross member the pressure from the rear end of the fastener and the transverse support face is connected to the rear wedging face s 'extending substantially vertically and in a plane approximately perpendicular to the cradles.
  • the thickness of the wall of the cylinder portion is determined so as to avoid excessive bending of the fastener by forming a support stop for the blade, which consequently limits the bending deformations of the assembly. of fixation.
  • the bending of the stop may exceed the accepted value, which may cause cracks or even a rupture.
  • the protuberance of the base makes it possible to avoid these phenomena.
  • the stop of the invention is lighter and more compact than existing stops while offering a high resistance to compression generated by the transverse forces of the rail thanks to the specific geometry of the transition volumes between the upper part, the base, the rear part and the front part.
  • this stop has no solid parts and can therefore be easily manufactured by injection molding without the phenomenon of air withdrawal or inclusion being detrimental to the quality and effectiveness of the finished product.
  • the stop B shown in Figures 1 to 5 comprises a front part 1 of support against the shoe of the rail R, a base 2 resting in a corresponding housing L of the cross T, an upper part 3 of support for the fastener A consisting of a leaf spring and a rear part 4 comprising a wedging face 40 against the rear wall of the housing L of the cross member T.
  • the front part 1 has two angled faces 11, 12 matching the lateral edge of the rail pad R (see FIGS. 3 and 5).
  • the upper part 3 is provided with support means 36 of the rear end of the fastener A and a central through hole 34 for the passage of the anchor member X in the cross member T (see FIGS. 2 and 5).
  • the upper part 3 also includes a central depression or recess 33, the bottom 330 of which is inclined downwards from the front towards the rear of the stop.
  • the depression 33 is flanked laterally by two symmetrical ribs 31, 32 of reinforcement and is limited towards the rear by the support means 36 of the fastener A.
  • the depression 33 rises gradually forward to the level of a flat rim 30 on which the front part of the fastener comes to bear.
  • the inclined bottom 330 communicates at its lower rear end, with a groove 35 opening onto the cross-member T directly above the rear part 4 and intended to evacuate water infiltration.
  • the groove 35 is formed through the support means 36 of the fastener A and thus separates them into two symmetrical parts.
  • the upper face of the reinforcing ribs 31, 32 is situated at a level slightly lower than that of the flat edge 30.
  • Each rib 31, 32 is connected by its outer edge to a lateral wing 310, 320 which reinforces the stability in compression.
  • the central orifice 34 is extended upwards by a portion of cylinder 37 to open into the depression 33 above the level of the upper face of the ribs 31, 32.
  • the upper edge of the wall of the cylinder 37 thus constitutes a support stop for the central part of the fastener A.
  • the thickness of the wall of the cylinder 37 is determined so as to avoid excessive bending of the fastener A.
  • the support means 36 of the rear end of the fastener A consist of two symmetrical cradles 361,362 on either side of the groove 35 connected transversely to the respective rear end of each rib 31,32.
  • the bottom of the cradles 361,362 is located at a lower level relative to the upper face of the ribs 31,32 while their upper front edge is located at the same level.
  • the cradles 361,362 are closed laterally by vertical walls 360.
  • the base 2 of the stop B has a central inclined face 22 corresponding to the underside of the depression 33 whose inclination is the same as that of the bottom 330 and where the central orifice 34 opens.
  • the pan 22 is bordered over its entire length with two concave and symmetrical side drafts 23, 24.
  • the transverse support face 21 rises slightly inclined upwards and backwards relative to the mean plane of the upper part 3.
  • the transverse face 21 is connected to the rear face 40 of wedging the rear part 4 extending substantially vertically and in a plane approximately perpendicular to the cradles 361,362.
  • the rear face 40 bears against the rear internal wall of the housing L of the cross member T.
  • the width of the upper part 3 located above the cross member T is greater than that of the base 2 housed in the cross member so that the underside of the lateral wings 310, 320 normally rests on the upper face of the cross member T while the lateral faces of the bodies 23, 24 are in contact with the internal lateral walls of the housing L (see FIG. 5).
  • the wedging face 40 of the rear part 4 is extended horizontally by a face 41 resting on the upper face of the cross-member T and reflecting, just like the support face 21, part of the forces from the rear end of the fastener AT.
  • the horizontal face 41 is provided over its entire width with a groove 42 at the junction with the wedging face 40.
  • the stop represented in FIG. 4 conforms to that which is illustrated in FIGS. 1 to 3, but its base 2 further comprises at least one and preferably two protrusions or frustoconical lugs 251, 252 arranged symmetrically on either side of the inclined face central 22.
  • protrusions are intended to come into bearing contact against the upper face of the housing L of the cross-member T during the bending of the stop from a predetermined clamping force. These protrusions 251, 252 thus limit the bending of the stop and prevent the appearance of any phenomenon of deformation or rupture.
  • the protrusions 251,252 are produced in the undercuts 23,24 midway between the front and rear support zones of the stop, that is to say in the zone where the amplitude of the bending is maximum .
  • the clearance situated between the lower end of the protrusions 251, 252 and the upper face of the housing L is between 0.5 and 3 mm. After tightening, there should be little play. If the tightening is excessive, the protrusions come to bear against the upper face of the housing L and the deformation of the bending is limited.
  • This additional support can have drawbacks for certain applications; for this purpose by a judicious choice of the geometry of the protrusions associated with the creep or relaxation properties of the material, it is possible to obtain a bearing force whose value decreases rapidly over time to become almost zero.
  • the bearing force is therefore only effective when it is useful, that is to say during tightening.
  • the protuberances are produced in the form of frustoconical elements.
  • the lower support face of these elements has a circular section whose surface is for example less than or equal to 2 cm 2 . Equivalent results can also be obtained with hemispherical protuberances.
  • the protrusions 251, 252 are produced in one piece with the stop directly by injection molding.
  • the stop shown in Figure 4 also includes on the inclined face 22, a vertical lug 26 for wedging intended to be inserted into a corresponding slot formed in the housing L.
  • the protuberance is produced on the base 2 in the form of a cylinder surrounding the central orifice 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Railway Tracks (AREA)
  • Connection Of Plates (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Seats For Vehicles (AREA)
  • Insulators (AREA)
  • Moving Of Heads (AREA)
  • Road Paving Structures (AREA)
  • Bridges Or Land Bridges (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Seal Device For Vehicle (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Linear Motors (AREA)

Abstract

A rail clip insulator including a front portion (1) bearing against the rail foot, a base (2) fitted into a corresponding seat in the rail sleeper, an upper portion (3) supporting the clip and having a means (36) for engaging the back end of said clip and a central through-hole (34) for an anchoring member, as well as a rear portion (4) provided with a locking surface (40) engaging the rear wall of the sleeper seat. The upper portion (3) comprises a central recess (33) with a bottom wall (330) facing downwards and rearwards, said recess being flanked on either side by two symmetrical reinforcing ribs (31, 32), and at the back by the clip engaging means (36).

Description

La présente invention concerne une butée isolante pour attache de rail de chemin de fer.The present invention relates to an insulating stop for a rail fastener.

De nombreux réseaux de voie ferrée ont adopté un principe de transport de l'information selon lequel le signal et, en particulier, les courants électriques circulent dans le rail grâce aux propriétés conductrices de celui-ci.Many railroad networks have adopted an information transport principle according to which the signal and, in particular, the electric currents circulate in the rail thanks to the conductive properties of the latter.

Ce principe nécessite une excellente isolation électrique des files de rail qui est alors assurée par la butée latérale associée à l'attache du système de fixation des rails sur les traverses.This principle requires excellent electrical insulation of the rail lines, which is then ensured by the lateral stop associated with the attachment of the system for fixing the rails to the sleepers.

Les butées latérales isolantes ont des géométries très variées en fonction du système de fixation dont elles font partie. Elles sont généralement réalisées en une matière plastique permettant d'obtenir un bon compromis entre les propriétés mécaniques et électriques.The insulating lateral stops have very varied geometries depending on the fixing system of which they are a part. They are generally made of a plastic material allowing a good compromise to be obtained between mechanical and electrical properties.

Les butées isolantes connues comprennent une partie avant d'appui contre le patin du rail, une base reposant dans un logement correspondant de la traverse, une partie supérieure de support de l'attache pourvue de moyens d'appui de l'extrémité arrière de ladite attache et d'un orifice central traversant pour le passage d'un organe d'ancrage et une partie arrière pourvue d'une face de calage contre la paroi arrière du logement de la traverse.The known insulating stops comprise a front part for bearing against the shoe of the rail, a base resting in a corresponding housing of the cross member, an upper part for supporting the fastener provided with means for supporting the rear end of said fastener and a central through hole for the passage of an anchoring member and a rear part provided with a wedging face against the rear wall of the cross member housing.

Cependant de telles butées sont lourdes et massives et sont difficiles à réaliser en matière plastique par moulage à injection en raison de tensions internes et de cavités liées au phénomène de retrait thermique.However, such stops are heavy and massive and are difficult to produce in plastic material by injection molding due to internal tensions and cavities linked to the phenomenon of thermal shrinkage.

La présente invention a pour but de résoudre les problèmes techniques précédents en prévoyant que la partie supérieure comporte une dépression centrale dont le fond est incliné vers le bas de l'avant vers l'arrière, qui est flanquée latéralement de deux nervures symétriques de renfort et limitée vers l'arrière par les moyens d'appui de l'attache.The present invention aims to solve the above technical problems by providing that the upper part has a central depression whose bottom is inclined downward from front to rear, which is laterally flanked by two symmetrical reinforcing ribs and limited towards the rear by the support means of the fastener.

Selon une caractéristique avantageuse, l'orifice central traversant se prolonge vers le haut par une portion de cylindre pour déboucher dans la dépression légèrement au-dessus de la face supérieure des nervures.According to an advantageous characteristic, the central through hole is extended upward by a portion of cylinder to open into the depression slightly above the upper face of the ribs.

Selon une autre caractéristique, le fond incliné communique à l'arrière avec une gorge pratiquée au travers des moyens d'appui de l'attache et débouchant au niveau de la partie arrière.According to another characteristic, the inclined bottom communicates at the rear with a groove made through the support means of the fastener and opening out at the rear part.

Selon encore une autre caractéristique, chaque nervure de renfort est reliée par son bord extérieur à une aile latérale.According to yet another characteristic, each reinforcing rib is connected by its outer edge to a lateral wing.

Selon un mode de réalisation préférentiel, lesdits moyens d'appui de l'extrémité arrière de l'attache sont constitués de deux berceaux symétriques reliés transversalement à l'extrémité arrière respective de chaque nervure et les deux berceaux sont disposés de part et d'autre de ladite gorge au niveau de la face supérieure des nervures.According to a preferred embodiment, said support means of the rear end of the fastener consist of two symmetrical cradles connected transversely to the respective rear end of each rib and the two cradles are arranged on either side of said groove at the upper face of the ribs.

Selon une variante de réalisation, la base comporte un pan incliné central correspondant à la face inférieure de la dépression, bordé par deux dépouilles latérales concaves. L'extrémité inférieure des dépouilles et celle du pan incliné sont réunies par une face transversale de soutien qui retransmet à la traverse la pression de l'extrémité arrière de l'attache et la face transversale de soutien est reliée à la face arrière de calage s'étendant de façon sensiblement verticale et selon un plan approximativement perpendiculaire aux berceaux.According to an alternative embodiment, the base comprises a central inclined face corresponding to the underside of the depression, bordered by two concave lateral spoils. The lower end of the remains and that of the inclined face are joined by a transverse support face which transmits to the cross member the pressure from the rear end of the fastener and the transverse support face is connected to the rear wedging face s 'extending substantially vertically and in a plane approximately perpendicular to the cradles.

De plus, l'épaisseur de la paroi de la portion de cylindre est déterminée de façon à éviter une flexion excessive de l'attache en formant butée d'appui pour la lame, ce qui par conséquent limite les déformations en flexion de l'ensemble de fixation.In addition, the thickness of the wall of the cylinder portion is determined so as to avoid excessive bending of the fastener by forming a support stop for the blade, which consequently limits the bending deformations of the assembly. of fixation.

Par ailleurs, il est prévu de limiter la flexion de la butée lors de la fixation de l'attache au moyen d'au moins une protubérance réalisée sur ladite base et destinée à venir en contact d'appui contre la face supérieure du logement de la traverse à partir d'un effort de flexion prédéterminé.Furthermore, provision is made to limit the bending of the stop when fixing the fastener by means of at least one protuberance produced on said base and intended to come into bearing contact against the upper face of the housing of the crosses from a predetermined bending force.

En effet, dans le cas où il se produit un serrage excessif de l'organe d'ancrage de l'attache, la flexion de la butée peut dépasser la valeur admise, ce qui peut provoquer des fissures ou même une rupture.Indeed, in the event of excessive tightening of the anchoring member of the fastener, the bending of the stop may exceed the accepted value, which may cause cracks or even a rupture.

La protubérance de la base permet d'éviter ces phénomènes.The protuberance of the base makes it possible to avoid these phenomena.

La butée de l'invention est plus légère et plus compacte que les butées existantes tout en offrant une résistance élevée à la compression générée par les efforts transversaux du rail grâce à la géométrie spécifique des volumes de transition entre la partie supérieure, la base, la partie arrière et la partie avant.The stop of the invention is lighter and more compact than existing stops while offering a high resistance to compression generated by the transverse forces of the rail thanks to the specific geometry of the transition volumes between the upper part, the base, the rear part and the front part.

De plus, cette butée ne possède pas de parties massives et peut donc être facilement fabriquée par moulage à injection sans que le phénomène de retrait ou d'inclusion d'air ne soit préjudiciable à la qualité et à l'efficacité du produit fini.In addition, this stop has no solid parts and can therefore be easily manufactured by injection molding without the phenomenon of air withdrawal or inclusion being detrimental to the quality and effectiveness of the finished product.

L'invention sera mieux comprise à la lecture de la description qui va suivre accompagnée des dessins sur lesquels :

  • la figure 1 représente une vue en perspective de la butée de l'invention coopérant avec un système de fixation d'un rail ;
  • la figure 2 représente une vue de dessus de la butée de la figure 1;
  • la figure 3 représente une vue de dessous de la butée de la figure 1 ;
  • la figure 4 représente une vue de dessous d'un autre mode de réalisation de la butée de la figure 3 ; et,
  • la figure 5 représente une vue en perspective éclatée d'un système de fixation d'un rail comportant une butée selon l'invention.
The invention will be better understood on reading the description which follows, accompanied by the drawings in which:
  • Figure 1 shows a perspective view of the stop of the invention cooperating with a rail fastening system;
  • 2 shows a top view of the stop of Figure 1;
  • Figure 3 shows a bottom view of the stopper of Figure 1;
  • Figure 4 shows a bottom view of another embodiment of the stopper of Figure 3; and,
  • FIG. 5 represents an exploded perspective view of a system for fixing a rail comprising a stop according to the invention.

La butée B représentée sur les figures 1 à 5 comprend une partie avant 1 d'appui contre le patin du rail R, une base 2 reposant dans un logement L correspondant de la traverse T, une partie supérieure 3 de support de l'attache A constituée d'une lame-ressort et une partie arrière 4 comportant une face de calage 40 contre la paroi arrière du logement L de la traverse T.The stop B shown in Figures 1 to 5 comprises a front part 1 of support against the shoe of the rail R, a base 2 resting in a corresponding housing L of the cross T, an upper part 3 of support for the fastener A consisting of a leaf spring and a rear part 4 comprising a wedging face 40 against the rear wall of the housing L of the cross member T.

La partie avant 1 comporte deux faces en équerre 11,12 épousant le bord latéral du patin de rail R (voir figures 3 et 5).The front part 1 has two angled faces 11, 12 matching the lateral edge of the rail pad R (see FIGS. 3 and 5).

La partie supérieure 3 est pourvue de moyens d'appui 36 de l'extrémité arrière de l'attache A et d'un orifice central 34 traversant pour le passage de l'organe d'ancrage X dans la traverse T (voir figures 2 et 5).The upper part 3 is provided with support means 36 of the rear end of the fastener A and a central through hole 34 for the passage of the anchor member X in the cross member T (see FIGS. 2 and 5).

Sur les figures 1 et 2, la partie supérieure 3 comporte également une dépression centrale ou évidement 33 dont le fond 330 est incliné vers le bas de l'avant vers l'arrière de la butée.In FIGS. 1 and 2, the upper part 3 also includes a central depression or recess 33, the bottom 330 of which is inclined downwards from the front towards the rear of the stop.

La dépression 33 est flanquée latéralement de deux nervures symétriques 31,32 de renfort et est limitée vers l'arrière par les moyens d'appui 36 de l'attache A.The depression 33 is flanked laterally by two symmetrical ribs 31, 32 of reinforcement and is limited towards the rear by the support means 36 of the fastener A.

La dépression 33 remonte progressivement vers l'avant jusqu'au niveau d'un rebord plat 30 sur lequel la partie avant de l'attache vient en appui.The depression 33 rises gradually forward to the level of a flat rim 30 on which the front part of the fastener comes to bear.

Le fond incliné 330 communique à son extrémité arrière inférieure, avec une gorge 35 débouchant sur la traverse T à l'aplomb de la partie arrière 4 et destinée à évacuer les infiltrations d'eau. La gorge 35 est pratiquée au travers des moyens d'appui 36 de l'attache A et les sépare ainsi en deux parties symétriques.The inclined bottom 330 communicates at its lower rear end, with a groove 35 opening onto the cross-member T directly above the rear part 4 and intended to evacuate water infiltration. The groove 35 is formed through the support means 36 of the fastener A and thus separates them into two symmetrical parts.

La face supérieure des nervures 31,32 de renfort est située à un niveau légèrement inférieur à celui du rebord plat 30.The upper face of the reinforcing ribs 31, 32 is situated at a level slightly lower than that of the flat edge 30.

Chaque nervure 31,32 est reliée par son bord extérieur à une aile latérale 310,320 qui renforce la stabilité en compression.Each rib 31, 32 is connected by its outer edge to a lateral wing 310, 320 which reinforces the stability in compression.

L'orifice central 34 se prolonge vers le haut par une portion de cylindre 37 pour déboucher dans la dépression 33 au-dessus du niveau de la face supérieure des nervures 31,32.The central orifice 34 is extended upwards by a portion of cylinder 37 to open into the depression 33 above the level of the upper face of the ribs 31, 32.

Le bord supérieur de la paroi du cylindre 37 constitue ainsi une butée d'appui pour la partie centrale de l'attache A. L'épaisseur de la paroi du cylindre 37 est déterminée de façon à éviter une flexion excessive de l'attache A.The upper edge of the wall of the cylinder 37 thus constitutes a support stop for the central part of the fastener A. The thickness of the wall of the cylinder 37 is determined so as to avoid excessive bending of the fastener A.

Les moyens d'appui 36 de l'extrémité arrière de l'attache A sont constitués de deux berceaux symétriques 361,362 de part et d'autre de la gorge 35 reliés transversalement à l'extrémité arrière respective de chaque nervure 31,32.The support means 36 of the rear end of the fastener A consist of two symmetrical cradles 361,362 on either side of the groove 35 connected transversely to the respective rear end of each rib 31,32.

Le fond des berceaux 361,362 est situé à un niveau inférieur par rapport à la face supérieure des nervures 31,32 tandis que leur bord supérieur avant est situé au même niveau.The bottom of the cradles 361,362 is located at a lower level relative to the upper face of the ribs 31,32 while their upper front edge is located at the same level.

Les berceaux 361,362 sont obturés latéralement par des parois verticales 360.The cradles 361,362 are closed laterally by vertical walls 360.

Sur les figures 1 et 3, la base 2 de la butée B comporte un pan incliné central 22 correspondant à la face inférieure de la dépression 33 dont l'inclinaison est la même que celle du fond 330 et où débouche l'orifice central 34.In FIGS. 1 and 3, the base 2 of the stop B has a central inclined face 22 corresponding to the underside of the depression 33 whose inclination is the same as that of the bottom 330 and where the central orifice 34 opens.

La pan 22 est bordé sur toute sa longueur de deux dépouilles latérales 23,24 concaves et symétriques.The pan 22 is bordered over its entire length with two concave and symmetrical side drafts 23, 24.

L'extrémité inférieure des dépouilles 23,24 et celle du pan incliné 22 correspond au point le plus bas de la base 2, sont réunies par une face transversale 21 de soutien qui retransmet à la traverse T la pression d'appui de l'extrémité arrière de l'attache A.The lower end of the bodies 23,24 and that of the inclined face 22 corresponds to the lowest point of the base 2, are joined by a transverse support face 21 which transmits the support pressure from the rear end of the fastener to the cross-member T

La face transversale 21 de soutien remonte de façon légèrement inclinée vers le haut et vers l'arrière par rapport au plan moyen de la partie supérieure 3.The transverse support face 21 rises slightly inclined upwards and backwards relative to the mean plane of the upper part 3.

La face transversale 21 est reliée à la face arrière 40 de calage de la partie arrière 4 s'étendant de façon sensiblement verticale et dans un plan approximativement perpendiculaire aux berceaux 361,362.The transverse face 21 is connected to the rear face 40 of wedging the rear part 4 extending substantially vertically and in a plane approximately perpendicular to the cradles 361,362.

La face arrière 40 vient en appui contre la paroi interne arrière du logement L de la traverse T.The rear face 40 bears against the rear internal wall of the housing L of the cross member T.

La largeur de la partie supérieure 3 située au-dessus de la traverse T est supérieure à celle de la base 2 logée dans la traverse de telle sorte que la face inférieure des ailes latérales 310,320 repose normalement sur la face supérieure de la traverse T tandis que les faces latérales des dépouilles 23,24 sont au contact des parois latérales internes du logement L (voir figure 5).The width of the upper part 3 located above the cross member T is greater than that of the base 2 housed in the cross member so that the underside of the lateral wings 310, 320 normally rests on the upper face of the cross member T while the lateral faces of the bodies 23, 24 are in contact with the internal lateral walls of the housing L (see FIG. 5).

La face 40 de calage de la partie arrière 4 se prolonge horizontalement par une face 41 reposant sur la face supérieure de la traverse T et répercutant au même titre que la face de soutien 21 une partie des efforts de l'extrémité arrière de l'attache A.The wedging face 40 of the rear part 4 is extended horizontally by a face 41 resting on the upper face of the cross-member T and reflecting, just like the support face 21, part of the forces from the rear end of the fastener AT.

La face horizontale 41 est pourvue sur toute sa largeur d'une rainure 42 à la jonction avec la face 40 de calage.The horizontal face 41 is provided over its entire width with a groove 42 at the junction with the wedging face 40.

La butée représentée sur la figure 4 est conforme à celle qui est illustrée sur les figures 1 à 3 mais sa base 2 comporte en outre au moins une et de préférence deux protubérances ou ergots tronconiques 251,252 disposés symétriquement de part et d'autre du pan incliné central 22.The stop represented in FIG. 4 conforms to that which is illustrated in FIGS. 1 to 3, but its base 2 further comprises at least one and preferably two protrusions or frustoconical lugs 251, 252 arranged symmetrically on either side of the inclined face central 22.

Ces protubérances sont destinées à venir en contact d'appui contre la face supérieure du logement L de la traverse T lors de la flexion de la butée à partir d'un effort de serrage prédéterminé. Ces protubérances 251,252 limitent ainsi la flexion de la butée et empêchent l'apparition de tout phénomène de déformation ou de rupture.These protrusions are intended to come into bearing contact against the upper face of the housing L of the cross-member T during the bending of the stop from a predetermined clamping force. These protrusions 251, 252 thus limit the bending of the stop and prevent the appearance of any phenomenon of deformation or rupture.

De manière avantageuse, les protubérances 251,252 sont réalisées dans les dépouilles 23,24 à mi-distance entre les zones d'appui avant et arrière de la butée c'est-à-dire dans la zone où l'amplitude de la flexion est maximale.Advantageously, the protrusions 251,252 are produced in the undercuts 23,24 midway between the front and rear support zones of the stop, that is to say in the zone where the amplitude of the bending is maximum .

Au repos, avant serrage de l'organe d'ancrage, le jeu situé entre l'extrémité inférieure des protubérances 251,252 et la face supérieure du logement L est compris entre 0,5 et 3 mm. Après serrage, un faible jeu doit subsister. Si le serrage est excessif, les protubérances viennent en appui contre la face supérieure du logement L et la déformation de la flexion est limitée.At rest, before tightening of the anchoring member, the clearance situated between the lower end of the protrusions 251, 252 and the upper face of the housing L is between 0.5 and 3 mm. After tightening, there should be little play. If the tightening is excessive, the protrusions come to bear against the upper face of the housing L and the deformation of the bending is limited.

Cet appui supplémentaire peut présenter des inconvénients pour certaines applications ; à cet effet par un choix judicieux de la géométrie des protubérances associé aux propriétés de fluage ou relaxation du matériau, on peut obtenir une force d'appui dont la valeur diminue rapidement avec le temps pour devenir quasiment nulle.This additional support can have drawbacks for certain applications; for this purpose by a judicious choice of the geometry of the protrusions associated with the creep or relaxation properties of the material, it is possible to obtain a bearing force whose value decreases rapidly over time to become almost zero.

La force d'appui n'est donc effective qu'au moment où elle est utile, c'est-à-dire lors du serrage.The bearing force is therefore only effective when it is useful, that is to say during tightening.

Selon un mode de réalisation avantageux, les protubérances sont réalisées sous forme d'éléments tronconiques. La face inférieure d'appui de ces éléments possède une section circulaire dont la surface est par exemple inférieure ou égale à 2 cm2. On peut également obtenir des résultats équivalents avec des protubérances de forme hémisphérique . Les protubérances 251,252 sont réalisées d'une seule pièce avec la butée directement par moulage à injection.According to an advantageous embodiment, the protuberances are produced in the form of frustoconical elements. The lower support face of these elements has a circular section whose surface is for example less than or equal to 2 cm 2 . Equivalent results can also be obtained with hemispherical protuberances. The protrusions 251, 252 are produced in one piece with the stop directly by injection molding.

La butée représentée sur la figure 4, comporte également sur le pan incliné 22, une patte verticale 26 de calage destinée à venir s'insérer dans une fente correspondante ménagée dans le logement L.The stop shown in Figure 4, also includes on the inclined face 22, a vertical lug 26 for wedging intended to be inserted into a corresponding slot formed in the housing L.

Selon un autre mode de réalisation (non représenté) la protubérance est réalisée sur la base 2 sous forme d'un cylindre entourant l'orifice central 34.According to another embodiment (not shown), the protuberance is produced on the base 2 in the form of a cylinder surrounding the central orifice 34.

Dans ces conditions, c'est la section annulaire inférieure de la paroi du cylindre qui vient lors de la flexion, en appui contre la face supérieure du logement L.Under these conditions, it is the lower annular section of the wall of the cylinder which comes during bending, pressing against the upper face of the housing L.

Claims (17)

  1. An insulating pad made of plastics material for a railway rail (R) clip (A), the pad comprising a front portion (1) for bearing against the flange of the rail, a base (2) received in a corresponding housing (L) in the sleeper (T), a top portion (3) for supporting the clip (A) provided with bearing means (36) for the rear end of said clip (A), a central through orifice (34) for receiving a fastener (X), and a rear portion (4) provided with a wedging face (40) for wedging against the rear wall of the housing (L) in the sleeper,
       characterized in that the top portion (3) includes a central depression (33) whose bottom (330) slopes downwards from front to rear, and is flanked on either side by two symmetrical reinforcing ribs (31, 32) that are delimited rearwards by the bearing means (36) for the clip (A).
  2. The pad according to claim 1, characterized in that the central through orifice (34) is extended upwards by a portion of a cylinder (37) so that it opens out above the top faces of the ribs (31, 32).
  3. The pad according to one of claims 1 or 2, characterized in that the sloping bottom (330) communicates at the rear with a groove (35) formed through the bearing means (36) for the clip (A) and opening out through the rear portion (4) of the sleeper (T).
  4. The pad according to one of the preceding claims, characterized in that each reinforcing rib (31, 32) is connected by means of its outside edge to a lateral wing (310, 320).
  5. The pad according to one of the preceding claims, characterized in that said bearing means (36) for the rear end of the clip (A) are constituted by two symmetrical cradles (361, 362) connected transversely to the respective rear ends of the ribs (31, 32).
  6. The pad according to claims 3 and 5, characterized in that the two cradles (361, 362) are disposed on either side of said groove (35) level with the top faces of the ribs (31, 32).
  7. The pad according to one of the preceding claims, characterized in that said base (2) includes a central sloping flat (22) corresponding to the bottom face of said depression (33) and disposed between two concave lateral setbacks (23, 24).
  8. The pad according to one of the preceding claims, characterized in that the width of the top portion (3) is greater than the width of the base (2).
  9. The pad according to one of the preceding claims, characterized in that the bottom ends of the setbacks (23, 24) and the bottom end of the sloping flat (22) are united by a transverse supporting face (21) which transmits pressure from the rear end of the clip (A) to the sleeper (T).
  10. The pad according to claims 5 and 9, characterized in that the transverse supporting face (21) is connected to the rear wedging face (40) that extends substantially vertically and by means of a plane that is approximately perpendicular to the cradles (361, 362).
  11. The pad according to claim 2, characterized in that the thickness of the wall of the portion of a cylinder (34) is determined so as to avoid excessive bending of the clip (A) by forming an abutment therefor.
  12. The pad according to one of the preceding claims, characterized in that said base (2) includes at least one projection (251) for coming into bearing contact against the top face of said housing (L) in the sleeper (T) above a predetermined bending force.
  13. The pad according to claims 7 and 12, characterized in that said base (2) includes two projections (251, 252) disposed symmetrically on either side of the central inclined flat (22).
  14. The pad according to one of claims 12 or 13, characterized in that said projection (251, 252) is frustoconical.
  15. The pad according to one of claims 12 or 13, characterized in that said projection is hemispherical.
  16. The pad according to one of claims 12 to 15, characterized in that the bottom thrust face of said projection (251, 252) is of an area not greater than 2 cm2.
  17. The pad according to one of claims 12 to 16, characterized in that, at rest, there exists clearance in the range 0.5 mm to 3 mm between the bottom thrust face of said projection (251, 252) and the top face of the housing (L).
EP94902863A 1992-12-29 1993-12-28 Rail clip insulator Expired - Lifetime EP0677127B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9215860 1992-12-29
FR9215860A FR2699942B1 (en) 1992-12-29 1992-12-29 Insulating stopper for rail track fastening.
FR9307680 1993-06-24
FR9307680A FR2699943B1 (en) 1992-12-29 1993-06-24 Insulating stopper for rail track fastening.
PCT/FR1993/001304 WO1994015022A1 (en) 1992-12-29 1993-12-28 Rail clip insulator

Publications (2)

Publication Number Publication Date
EP0677127A1 EP0677127A1 (en) 1995-10-18
EP0677127B1 true EP0677127B1 (en) 1997-07-30

Family

ID=26229998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94902863A Expired - Lifetime EP0677127B1 (en) 1992-12-29 1993-12-28 Rail clip insulator

Country Status (17)

Country Link
EP (1) EP0677127B1 (en)
JP (1) JP3260374B2 (en)
KR (1) KR960700381A (en)
CN (1) CN1103687A (en)
AT (1) ATE156211T1 (en)
BR (1) BR9307751A (en)
DE (1) DE69312742D1 (en)
DK (1) DK0677127T3 (en)
DZ (1) DZ1743A1 (en)
ES (2) ES2107175T3 (en)
FR (1) FR2699943B1 (en)
GR (1) GR3024838T3 (en)
MA (1) MA23059A1 (en)
MX (1) MX9308180A (en)
OA (1) OA10170A (en)
TN (1) TNSN93142A1 (en)
WO (1) WO1994015022A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2119656B1 (en) * 1995-09-22 1999-05-16 Red Nac Ferrocarriles Espan IMPROVEMENTS INTRODUCED IN THE ELBOW PLATES FOR ELASTIC FASTENING OF RAILS ON CONCRETE SLEEVERS.
FR2764316B1 (en) * 1997-06-05 1999-08-27 Allevard Stedef ADJUSTABLE FASTENING DEVICE OF A RAIL
US6305615B1 (en) * 2000-08-16 2001-10-23 Otis Elevator Company Rail clip
DE202007018602U1 (en) * 2007-09-21 2008-12-04 Vossloh-Werke Gmbh System for fastening a rail
CN101824780B (en) * 2009-02-11 2013-10-23 沃斯洛工厂有限公司 Guide plate of system for fastening railway rail to foundation and system including guide plate
US20110047786A1 (en) * 2009-02-11 2011-03-03 Vossloh-Werke Gmbh Guide plate for a system for securing a rail on a substrate and a system comprising such guide plate
GB2476460B (en) * 2009-12-22 2016-01-13 Pandrol Ltd Railway rail fastening apparatus
GB201101720D0 (en) 2011-02-01 2011-03-16 Pandrol Ltd Railway rail fastening clips and insulator
FR2971267B1 (en) * 2011-02-09 2014-06-27 Vape Rail Int DEVICE FOR FASTENING A RAILWAY RAIL ON A SUPPORT SUCH AS A TRAVERSE
GB2510419B (en) * 2013-02-04 2020-02-05 Pandrol Ltd A railway rail anchoring device
DE102013221175B4 (en) * 2013-10-18 2020-10-01 Semperit Ag Holding Angle guide plate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411920A1 (en) * 1977-12-16 1979-07-13 Ressorts Ind ELASTIC ASSEMBLY OF A RAIL ON ITS SUPPORT
FR2634801B1 (en) * 1988-08-01 1990-11-09 Sonneville Int SUPPORT AND FIXING DEVICE FOR RAILWAY RAIL

Also Published As

Publication number Publication date
ES2096513B1 (en) 1997-10-16
OA10170A (en) 1998-12-18
KR960700381A (en) 1996-01-20
MA23059A1 (en) 1994-07-01
MX9308180A (en) 1995-01-31
JPH08504908A (en) 1996-05-28
FR2699943A1 (en) 1994-07-01
FR2699943B1 (en) 1997-08-29
GR3024838T3 (en) 1998-01-30
ATE156211T1 (en) 1997-08-15
ES2107175T3 (en) 1997-11-16
EP0677127A1 (en) 1995-10-18
CN1103687A (en) 1995-06-14
DK0677127T3 (en) 1998-03-16
WO1994015022A1 (en) 1994-07-07
ES2096513A1 (en) 1997-03-01
DE69312742D1 (en) 1997-09-04
TNSN93142A1 (en) 1994-03-17
BR9307751A (en) 1995-10-24
JP3260374B2 (en) 2002-02-25
DZ1743A1 (en) 2002-02-17

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