EP1777344A1 - Plug for repairing an anchoring device for a screw for railway sleeper - Google Patents

Plug for repairing an anchoring device for a screw for railway sleeper Download PDF

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Publication number
EP1777344A1
EP1777344A1 EP06356126A EP06356126A EP1777344A1 EP 1777344 A1 EP1777344 A1 EP 1777344A1 EP 06356126 A EP06356126 A EP 06356126A EP 06356126 A EP06356126 A EP 06356126A EP 1777344 A1 EP1777344 A1 EP 1777344A1
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EP
European Patent Office
Prior art keywords
insert
hole
main lateral
face
main
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.)
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Application number
EP06356126A
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German (de)
French (fr)
Inventor
Edmond Mahikian
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Individual
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Individual
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Publication date
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Publication of EP1777344A1 publication Critical patent/EP1777344A1/en
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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
    • E01B9/04—Fastening on wooden or concrete sleepers or on masonry without clamp members
    • E01B9/14—Plugs, sleeves, thread linings, or other inserts for holes in sleepers
    • E01B9/18—Plugs, sleeves, thread linings, or other inserts for holes in sleepers for concrete sleepers

Definitions

  • the present invention relates to an insert for restoring a railway rail anchor to a wooden rail.
  • the railway rails are attached to wooden sleepers by means of metal bolts screwed into the sleepers. Over time, moisture permeates between some lag bolts and sleepers, degrading the wood areas in which the lag bolts are anchored. This results in a game lag bolts compared to the sleepers, coming to lessen the fixing of the rails. This play is accentuated by the forces transmitted by the passage of the trains, which also achieve some erosion of the wood of the cross as a result of repeated friction. This erosion leads to an ovalization of the holes in the upper part, giving them a conical shape seen in section. It is then necessary to restore the anchoring of the rails to the sleepers.
  • the repair method using this insert comprises the steps of removing the lag bolt concerned, placing the insert in the hole to be treated, depositing in the hole a fluid curable clean before curing, to flow into the fibers of the wood, and to screw the lag screw so as to crush the insert between the lag bolt and the wall of the hole, thereby causing the curable fluid product to flow around this lag bolt and the insert.
  • the existing insert is generally satisfactory but is however subject to improvement.
  • the existing insert may not allow a sufficiently solid restoration of an anchor, particularly in the case of enlarged holes and more or less ovalized in the upper part. It is certainly possible to put two inserts in place but there is the risk that one or both of the inserts will move angularly relative to each other when the lag screw is put back in place. .
  • the present invention aims to remedy these disadvantages.
  • An object of the invention is therefore to provide a restoration insert of a railway rail anchor on a wooden crossbar, allowing a solid restoration of an anchor even in case of holes widened or more or less oval in the top part.
  • Another object of the invention is to provide an insert having a limited risk of angular or axial displacement in the hole during the replacement of the lag bolt.
  • a further object of the invention is to provide an insert limiting the risk of curable product leakage at the lower end of the hole.
  • the insert according to the invention thus comprises two main lateral parts intended to be crushed between the lag bolt and the wood of the cross member, which allows a solid restoration of the anchor even in case of enlarged holes or more or less ovalized in the upper part.
  • the connection of these two main lateral parts to said central part makes it possible to maintain the relative position of the main lateral parts with respect to each other at the beginning of screwing the bolt and thus effectively prevent a risk of angular displacement of the main lateral parts relative to each other.
  • the bearing of the two main lateral parts against the timber of the cross-member makes it possible to increase the friction between the insert and the cross-member, and thus to reduce the risk of axial displacement of the insert at the beginning of the screwing operation. background.
  • Said central portion also allows, because of its size and its connection to the two main lateral parts, to greatly reduce the risk of the curable product escaping out of the hole.
  • the insert according to the invention is made of a material that can be folded and, before use, its two main lateral parts are situated on either side of the central part, in the extension of one of the other.
  • the insert is thus manufactured according to this elongate shape, and its two main lateral parts must be bent at angles close to or equal to a right angle relative to its central part at the time of its introduction into the hole to be treated.
  • the manufacture of the insert including its molding in a synthetic material, is facilitated.
  • the elastic return of this material increases the bearing force of the main lateral parts against the crossbar after placement and therefore promotes the resistance of the insert to axial displacement in the hole.
  • the main lateral parts can be connected to the central part by flexible zones, in particular, if the insert is made of a synthetic material molded by film hinges.
  • the main lateral parts are preferably located on two opposite sides of said central part, so that, after placing the insert in the hole to be treated, they are facing each other at the same level. two diametrically opposite areas of this hole.
  • the main lateral parts preferably have, at their portions connected to the central part, widths decreasing towards this central portion.
  • This reduction in width promotes the introduction of the insert into the hole to be treated and allows an increased possibility of deformation of the main lateral parts at their zones connected to the central part.
  • Each main lateral portion preferably has a longitudinal tube-shaped shape, that is to say has a concave face on one side and a convex face on the opposite side, the concave faces of the two main lateral parts being, after placing in place of the insert, facing each other.
  • This shape of the main lateral parts is thus adapted to the shape of the holes and lag bolts.
  • Each main lateral part advantageously comprises holes therethrough, which put in communication its face intended to be turned towards the inside of the hole and its face intended to come against the crosspiece.
  • At least one main lateral portion may comprise substantially transverse and / or longitudinal ribs, projecting from its face intended to bear against the cross member, and / or internal grooves arranged from its face intended to be turned towards the side -Fond, these internal grooves being arranged to correspond substantially to the thread of the lag bolt.
  • At least one main lateral portion may comprise a tab extending its opposite end to that connected to said central portion, having a reduced thickness, for example about 1 mm thick.
  • This tongue facilitates the orientation of the insert after placement in the hole, to give the latter the most appropriate angular position according to the shape of the hole.
  • the face of the tongue intended to be located towards the inside of the hole after placement of an insert is in the extension of the face of the main lateral part comprising this tongue intended to be located towards inside the hole after placing the insert.
  • the main lateral part therefore has no upper rim against which the lag bolt could bear when it is put back in place, so that the risk of axial displacement of the insert during this refitting is reduced. especially.
  • Figures 1 to 4 show from different angles an insert 1 for restoring a railway rail anchor to a wooden cross.
  • the railway rails are fixed to wooden sleepers 100 (see FIGS. 5 and 6) by means of metal lag bolts (not shown) screwed into the sleepers 100. These lag bolts can become loose over the course of time. time, giving the holes 101 a slightly conical shape seen in cross section, as it appears in these Figures 5 and 6.
  • the restoration process involves removing the lag bolt concerned, placing the insert 1 in the hole 101 to be treated, depositing in this hole a curable fluid product, clean, before curing, to flow in the wood fibers, and screwing the lag screw so as to crush the insert 1 between the lag bolt and the wall of the hole and to flow said curable fluid product around the lag bolt and the insert 1.
  • the insert 1 comprises two main lateral parts 2 and a central part 3.
  • the main lateral parts 2 are located on two opposite sides of the central part 3 and are connected thereto by zones foldable 4.
  • the whole of the insert 1 is made by molding a synthetic material, the foldable areas 4 being constituted by film hinges. As molded, the insert 1 is as shown in Figures 1 to 3, the main side portions 2 being in the longitudinal extension of one another.
  • the foldable areas 4 are such that the two main lateral parts 2 can be folded towards one another with respect to the central part 3 as shown in FIGS. 5 and 6, so that the insert 1 can be introduced in the hole 101 of the cross member 100 receiving the anchor lag bolt of the rail. After this folding, the two main lateral parts 2 extend along one of the other and can come to bear against the cross member 100 at two diametrically opposite zones of the hole 101, as shown in FIG. 6.
  • the main lateral parts are dimensioned to extend, after placing the insert 1 in the hole 101, over a large portion of the height of this hole, as can be seen in this same figure 6.
  • each main lateral portion 2 has a longitudinal tube-like shape, i.e. has a concave face 2a on one side and a convex face 2b on the opposite side.
  • the concave faces 2a of the two main lateral parts are, after introduction of the insert 1, facing each other.
  • Each main lateral part 2 furthermore comprises stepped holes 5 which pass through it, these holes putting in communication the faces 2a and 2b of the main lateral part 2.
  • the latter also comprises substantially transverse ribs 6 and longitudinal ribs 7 on its face. convex 2b, and internal grooves 8 arranged from its concave face 2a, these grooves 8 being arranged to correspond substantially to the thread of the lag bolt.
  • Each main lateral portion 2 further comprises a tongue 9 extending its opposite end to that connected to the central portion 3, having a reduced thickness, for example about 1 mm thick.
  • the face of the tongue 9 located on the side of the concave face 2a is in the extension of this face 2a.
  • the central portion 3 is, for its part, sized for, after placing the insert 1, close a large portion of the section of the hole, as shown in Figure 6.
  • tongues 9 allow to facilitate the orientation of the insert 1 after placement in the hole 101, to give the latter the most appropriate angular position according to the shape of the hole.
  • the synthetic material constituting the insert 1 advantageously has a slight elastic flexibility, so that the elastic return of this material allows the existence of a slight bearing force of the main lateral parts 2 against the cross member 100.
  • This slight force of support, together with the ribs 6 and 7 and the connections of the main lateral parts 2 to the central portion 3, promotes the resistance of the insert 1 to an angular or axial displacement in the hole 101 at the time of the repositioning of the pulls -background.
  • the arrangement of the internal faces of the tongues 9 in the extension of the concave faces 2a eliminates any presence of upper edges on the insert 1, against which the lag bolt may be supported during its replacement, which contributes to reducing the risk of angular or axial displacement of the insert during this refitting.
  • the upper ends of the tongues 9 may be slightly flared, as shown, to form an inlet promoting the reinsertion of the lag bolt.
  • a pasty curable product such as a filled epoxy resin, is placed in the lower part of the hole 101 and the lag screw is screwed in the insert 1, its thread cooperating with the grooves 8 of the main lateral parts 2.
  • This screwing of the lag bolt has the effect of crushing the main lateral parts 2 between itself and the cross member 100 and to flow the curable product into the wood fibers, in particular, through the holes 5, through 2.
  • the central portion 3 allows, because of its size and its connection to the two main lateral parts, to greatly reduce the escape of curable product from the hole 101, which opens into the underside of the cross member 100.
  • the invention provides a railway rail anchor restoring insert having, with respect to prior art homologous inserts, the decisive advantages of enabling a solid restoration of an anchor even in case of holes widened or more or less ovalized in the upper part, to present a limited risk of angular or axial displacement in the hole during the replacement of the lag bolt, and to limit the risk of leakage of hardenable product. level of the lower end of the hole.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

The insert has two main side parts (2) to be pressed between a sleeper screw and a timber sleeper (100). Each side part has a tab (9) whose inner surfaces are arranged in the extension of concave surfaces. A central part (3) is connected to the two side parts. The central part is disposed perpendicularly to the side parts, after installation of the insert in a hole (101) of the sleeper. The hole is deposited with a hardenable fluid product such as a charged epoxy resin. The central part is dimensioned to seal a broad portion of the section of the hole.

Description

La présente invention concerne un insert de restauration d'un ancrage de rail de chemin de fer à une traverse en bois.The present invention relates to an insert for restoring a railway rail anchor to a wooden rail.

Les rails de chemin de fer sont fixés à des traverses en bois au moyen de tire-fond métalliques vissés dans les traverses. Au fil du temps, de l'humidité s'infiltre entre certains tire-fond et les traverses, venant dégrader les zones du bois dans lesquelles ces tire-fond sont ancrés. Il en résulte une prise de jeu des tire-fond par rapport aux traverses, venant amoindrir la fixation des rails. Cette prise de jeu est accentuée par les efforts transmis par le passage des trains, lesquels réalisent en outre une certaine érosion du bois de la traverse par suite des frottements répétés. Cette érosion conduit à une ovalisation des trous en partie supérieure, donnant à ces derniers une forme conique vue en coupe. Il est alors nécessaire de restaurer l'ancrage des rails aux traverses.The railway rails are attached to wooden sleepers by means of metal bolts screwed into the sleepers. Over time, moisture permeates between some lag bolts and sleepers, degrading the wood areas in which the lag bolts are anchored. This results in a game lag bolts compared to the sleepers, coming to lessen the fixing of the rails. This play is accentuated by the forces transmitted by the passage of the trains, which also achieve some erosion of the wood of the cross as a result of repeated friction. This erosion leads to an ovalization of the holes in the upper part, giving them a conical shape seen in section. It is then necessary to restore the anchoring of the rails to the sleepers.

Pour ce faire, il a été proposé d'utiliser un insert mis en place dans le trou de la traverse avant revissage du tire-fond, cet insert étant ainsi écrasé entre le tire-fond et la traverse. Le procédé de réparation utilisant cet insert comprend les étapes consistant à retirer le tire-fond concerné, à placer l'insert dans le trou à traiter, à déposer dans le trou un produit fluide durcissable, propre, avant durcissement, à fluer dans les fibres du bois, et à revisser le tire-fond de manière à écraser l'insert entre ce tire-fond et la paroi du trou, faisant ainsi fluer ledit produit fluide durcissable autour de ce tire-fond et de l'insert.To do this, it has been proposed to use an insert placed in the hole of the crossbar before screwing the lag bolt, this insert being thus crushed between the lag bolt and the crossbar. The repair method using this insert comprises the steps of removing the lag bolt concerned, placing the insert in the hole to be treated, depositing in the hole a fluid curable clean before curing, to flow into the fibers of the wood, and to screw the lag screw so as to crush the insert between the lag bolt and the wall of the hole, thereby causing the curable fluid product to flow around this lag bolt and the insert.

L'insert existant donne globalement satisfaction mais est cependant susceptible d'améliorations.The existing insert is generally satisfactory but is however subject to improvement.

Il s'avère en effet que l'insert existant peut ne pas permettre une restauration suffisamment solide d'un ancrage, particulièrement en cas de trous élargis et plus ou moins ovalisés en partie supérieure. Il est certes possible de mettre deux inserts en place mais il existe alors le risque que l'un des deux inserts, ou les deux, se déplacent angulairement l'un par rapport à l'autre lors de la remise en place du tire-fond.It turns out that the existing insert may not allow a sufficiently solid restoration of an anchor, particularly in the case of enlarged holes and more or less ovalized in the upper part. It is certainly possible to put two inserts in place but there is the risk that one or both of the inserts will move angularly relative to each other when the lag screw is put back in place. .

Il apparaît de plus exister un risque de fuite du produit durcissable à l'extrémité inférieure du trou, ce trou étant généralement débouchant au niveau de la face inférieure de la traverse.There also appears to be a risk of leakage of the hardenable product at the lower end of the hole, this hole being generally opening at the bottom face of the cross member.

La présente invention vise à remédier à ces inconvénients.The present invention aims to remedy these disadvantages.

Un objectif de l'invention est donc de fournir un insert de restauration d'un ancrage de rail de chemin de fer sur une traverse en bois, permettant une restauration solide d'un ancrage même en cas de trous élargis ou plus ou moins ovalisés en partie supérieure.An object of the invention is therefore to provide a restoration insert of a railway rail anchor on a wooden crossbar, allowing a solid restoration of an anchor even in case of holes widened or more or less oval in the top part.

Un autre objectif de l'invention est de fournir un insert présentant un risque limité de déplacement angulaire ou axial dans le trou lors de la remise en place du tire-fond.Another object of the invention is to provide an insert having a limited risk of angular or axial displacement in the hole during the replacement of the lag bolt.

Un objectif supplémentaire de l'invention est de fournir un insert limitant le risque de fuite de produit durcissable au niveau de l'extrémité inférieure du trou.A further object of the invention is to provide an insert limiting the risk of curable product leakage at the lower end of the hole.

Pour atteindre au moins l'un de ces objectifs, l'insert selon l'invention comprend :

  • deux parties latérales principales, dimensionnées pour s'étendre, après mise en place de l'insert dans le trou, sur une large portion de la hauteur de ce trou, le long l'une de l'autre ; et
  • une partie centrale à laquelle sont reliées les deux parties latérales principales, cette partie centrale étant disposée, après mise en place de l'insert dans le trou, sensiblement perpendiculairement auxdites parties latérales principales et étant dimensionnée pour obturer une large portion de la section du trou.
To achieve at least one of these objectives, the insert according to the invention comprises:
  • two main lateral parts, sized to extend, after placing the insert in the hole, over a large portion of the height of this hole, along one another; and
  • a central part to which the two main lateral parts are connected, this central part being placed, after placing the insert in the hole, substantially perpendicular to said main lateral parts and being sized to close a large portion of the section of the hole; .

L'insert selon l'invention comprend ainsi deux parties latérales principales destinées à être écrasées entre le tire-fond et le bois de la traverse, ce qui permet une restauration solide de l'ancrage même en cas de trous élargis ou plus ou moins ovalisés en partie supérieure. La liaison de ces deux parties latérales principales à ladite partie centrale permet de maintenir la position relative des parties latérales principales l'une par rapport à l'autre en début de revissage du tire-fond et de prévenir ainsi efficacement un risque de déplacement angulaire des parties latérales principales par rapport à l'autre. La prise d'appui des deux parties latérales principales contre le bois de la traverse permet d'augmenter les frottements entre l'insert et la traverse, et donc de réduire le risque de déplacement axial de l'insert en début de revissage du tire-fond.The insert according to the invention thus comprises two main lateral parts intended to be crushed between the lag bolt and the wood of the cross member, which allows a solid restoration of the anchor even in case of enlarged holes or more or less ovalized in the upper part. The connection of these two main lateral parts to said central part makes it possible to maintain the relative position of the main lateral parts with respect to each other at the beginning of screwing the bolt and thus effectively prevent a risk of angular displacement of the main lateral parts relative to each other. The bearing of the two main lateral parts against the timber of the cross-member makes it possible to increase the friction between the insert and the cross-member, and thus to reduce the risk of axial displacement of the insert at the beginning of the screwing operation. background.

Ladite partie centrale permet en outre, de par ses dimensions et sa liaison aux deux parties latérales principales, de réduire fortement le risque d'échappement du produit durcissable hors du trou.Said central portion also allows, because of its size and its connection to the two main lateral parts, to greatly reduce the risk of the curable product escaping out of the hole.

De préférence, l'insert selon l'invention est réalisé en une matière susceptible d'être pliée et, avant utilisation, ses deux parties latérales principales sont situées de part et d'autre de la partie centrale, dans le prolongement l'une de l'autre.Preferably, the insert according to the invention is made of a material that can be folded and, before use, its two main lateral parts are situated on either side of the central part, in the extension of one of the other.

L'insert est ainsi fabriqué selon cette forme allongée, et ses deux parties latérales principales doivent être repliées selon des angles proches ou égaux à un angle droit par rapport à sa partie centrale au moment de sa mise en place dans le trou à traiter. La fabrication de l'insert, notamment son moulage en une matière synthétique, s'en trouve facilitée. De plus, si la matière constituant l'insert présente une légère souplesse élastique, le rappel élastique de cette matière augmente la force d'appui des parties latérales principales contre la traverse après mise en place et favorise par conséquent la résistance de l'insert à un déplacement axial dans le trou.The insert is thus manufactured according to this elongate shape, and its two main lateral parts must be bent at angles close to or equal to a right angle relative to its central part at the time of its introduction into the hole to be treated. The manufacture of the insert, including its molding in a synthetic material, is facilitated. In addition, if the material constituting the insert has a slight elastic flexibility, the elastic return of this material increases the bearing force of the main lateral parts against the crossbar after placement and therefore promotes the resistance of the insert to axial displacement in the hole.

Les parties latérales principales peuvent être reliées à la partie centrale par des zones flexibles, notamment, si l'insert est en une matière synthétique moulée, par des charnières-film.The main lateral parts can be connected to the central part by flexible zones, in particular, if the insert is made of a synthetic material molded by film hinges.

Les parties latérales principales sont de préférence, situées sur deux côtés opposés de ladite partie centrale, de sorte que, après mise en place de l'insert dans le trou à traiter, elles se trouvent en regard l'une de l'autre au niveau de deux zones diamétralement opposées de ce trou.The main lateral parts are preferably located on two opposite sides of said central part, so that, after placing the insert in the hole to be treated, they are facing each other at the same level. two diametrically opposite areas of this hole.

Les parties latérales principales ont de préférence, au niveau de leurs portions raccordées à la partie centrale, des largeurs allant en se réduisant en direction de cette partie centrale.The main lateral parts preferably have, at their portions connected to the central part, widths decreasing towards this central portion.

Cette réduction de largeur favorise l'introduction de l'insert dans le trou à traiter et permet une possibilité augmentée de déformation des parties latérales principales au niveau de leurs zones raccordées à la partie centrale.This reduction in width promotes the introduction of the insert into the hole to be treated and allows an increased possibility of deformation of the main lateral parts at their zones connected to the central part.

Chaque partie latérale principale a de préférence une forme en portion longitudinale de tube, c'est-à-dire présente une face concave sur un côté et une face convexe sur le côté opposé, les faces concaves des deux parties latérales principales étant, après mise en place de l'insert, tournées l'une vers l'autre.Each main lateral portion preferably has a longitudinal tube-shaped shape, that is to say has a concave face on one side and a convex face on the opposite side, the concave faces of the two main lateral parts being, after placing in place of the insert, facing each other.

Cette forme des parties latérales principales est ainsi adaptée à la forme des trous et des tire-fond.This shape of the main lateral parts is thus adapted to the shape of the holes and lag bolts.

Chaque partie latérale principale comprend avantageusement des trous la traversant, qui mettent en communication sa face destinée à être tournée vers l'intérieur du trou et sa face destinée à venir contre la traverse.Each main lateral part advantageously comprises holes therethrough, which put in communication its face intended to be turned towards the inside of the hole and its face intended to come against the crosspiece.

Ces trous favorisent la diffusion du produit durcissable au travers de ces parties latérales principales.These holes promote diffusion of the curable product through these main lateral parts.

Au moins une partie latérale principale peut comprendre des nervures sensiblement transversales et/ou longitudinales, faisant saillie de sa face destinée à prendre appui contre la traverse, et/ou des rainures internes aménagées à partir de sa face destinée à être tournée du côté du tire-fond, ces rainures internes étant disposées de manière à correspondre sensiblement au filet du tire-fond.At least one main lateral portion may comprise substantially transverse and / or longitudinal ribs, projecting from its face intended to bear against the cross member, and / or internal grooves arranged from its face intended to be turned towards the side -Fond, these internal grooves being arranged to correspond substantially to the thread of the lag bolt.

Ces nervures favorisent la prise d'appui de cette partie latérale principale contre la traverse, et les rainures internes permettent, une fois l'insert mis en place dans le trou, de former une portion de taraudage propre à recevoir le filet du tire-fond.These ribs favor the support of this main lateral part against the crossbar, and the internal grooves allow, once the insert placed in the hole, to form a tapping portion adapted to receive the thread of the lag bolt. .

Au moins une partie latérale principale peut comprendre une languette prolongeant son extrémité opposée à celle reliée à ladite partie centrale, ayant une épaisseur réduite, par exemple d'environ 1 mm d'épaisseur.At least one main lateral portion may comprise a tab extending its opposite end to that connected to said central portion, having a reduced thickness, for example about 1 mm thick.

Cette languette permet de faciliter l'orientation de l'insert après mise en place dans le trou, afin de donner à ce dernier la position angulaire la plus adéquate selon la forme du trou.This tongue facilitates the orientation of the insert after placement in the hole, to give the latter the most appropriate angular position according to the shape of the hole.

Avantageusement, dans ce cas, la face de la languette destinée à être située vers l'intérieur du trou après mise en place d'un insert se trouve dans le prolongement de la face de la partie latérale principale comportant cette languette destinée à être située vers l'intérieur du trou après mise en place de l'insert.Advantageously, in this case, the face of the tongue intended to be located towards the inside of the hole after placement of an insert is in the extension of the face of the main lateral part comprising this tongue intended to be located towards inside the hole after placing the insert.

La partie latérale principale ne comporte dès lors pas de rebord supérieur contre lequel le tire-fond risquerait de prendre appui lors de sa remise en place, de sorte que le risque de déplacement axial de l'insert lors de cette remise en place en est réduit d'autant.The main lateral part therefore has no upper rim against which the lag bolt could bear when it is put back in place, so that the risk of axial displacement of the insert during this refitting is reduced. especially.

L'invention sera bien comprise, et d'autres caractéristiques et avantages de celle-ci apparaîtront, en référence au dessin schématique annexé, ce dessin représentant, à titre d'exemple non limitatif, une forme de réalisation préférée de l'insert concerné.

  • La figure 1 en est une vue de côté ;
  • la figure 2 en est une vue de côté, selon une direction perpendiculaire à celle de la vue selon la figure 1, et en coupe longitudinale ;
  • la figure 3 en est une vue de côté, selon une direction opposée à celle de la vue selon la figure 1 ;
  • la figure 4 en est une vue en bout ;
  • la figure 5 en est une vue de côté, au moment de sa mise en place dans le trou d'une traverse de chemin de fer en bois dont l'ancrage d'un rail doit être restauré, et
  • la figure 6 en est une vue similaire à la figure 5, après mise en place dans ce trou.
The invention will be better understood, and other features and advantages thereof will appear, with reference to the appended schematic drawing, this drawing showing, by way of non-limiting example, a preferred embodiment of the insert concerned.
  • Figure 1 is a side view;
  • Figure 2 is a side view in a direction perpendicular to that of the view according to Figure 1, and in longitudinal section;
  • Figure 3 is a side view in a direction opposite to that of the view according to Figure 1;
  • Figure 4 is an end view;
  • Figure 5 is a side view, at the time of its introduction into the hole of a wooden railway crossing, the anchoring of a rail must be restored, and
  • Figure 6 is a view similar to Figure 5, after implementation in this hole.

Les figures 1 à 4 représentent sous différents angles un insert 1 de restauration d'un ancrage de rail de chemin de fer à une traverse en bois.Figures 1 to 4 show from different angles an insert 1 for restoring a railway rail anchor to a wooden cross.

Les rails de chemin de fer sont fixés à des traverses en bois 100 (cf. figures 5 et 6) au moyen de tire-fond métalliques (non représentés) vissés dans les traverses 100. Ces tire-fond peuvent prendre du jeu au fil du temps, donnant aux trous 101 une forme légèrement conique vue en coupe transversale, ainsi que cela apparaît sur ces figures 5 et 6.The railway rails are fixed to wooden sleepers 100 (see FIGS. 5 and 6) by means of metal lag bolts (not shown) screwed into the sleepers 100. These lag bolts can become loose over the course of time. time, giving the holes 101 a slightly conical shape seen in cross section, as it appears in these Figures 5 and 6.

Le procédé de restauration consiste à retirer le tire-fond concerné, à placer l'insert 1 dans le trou 101 à traiter, à déposer dans ce trou un produit fluide durcissable, propre, avant durcissement, à fluer dans les fibres du bois, et à revisser le tire-fond de manière à écraser l'insert 1 entre ce tire-fond et la paroi du trou et à faire fluer ledit produit fluide durcissable autour de ce tire-fond et de l'insert 1.The restoration process involves removing the lag bolt concerned, placing the insert 1 in the hole 101 to be treated, depositing in this hole a curable fluid product, clean, before curing, to flow in the wood fibers, and screwing the lag screw so as to crush the insert 1 between the lag bolt and the wall of the hole and to flow said curable fluid product around the lag bolt and the insert 1.

En référence aux figures 1 à 4, l'insert 1 comprend deux parties latérales principales 2 et une partie centrale 3. Les parties latérales principales 2 sont situées sur deux côtés opposés de la partie centrale 3 et sont reliées à celle-ci par des zones pliables 4.With reference to FIGS. 1 to 4, the insert 1 comprises two main lateral parts 2 and a central part 3. The main lateral parts 2 are located on two opposite sides of the central part 3 and are connected thereto by zones foldable 4.

L'ensemble de l'insert 1 est réalisé par moulage d'une matière synthétique, les zones pliables 4 étant constituées par des charnières-film. Tel que moulé, l'insert 1 se présente comme montré sur les figures 1 à 3, les parties latérales principales 2 se trouvant dans le prolongement longitudinal l'une de l'autre.The whole of the insert 1 is made by molding a synthetic material, the foldable areas 4 being constituted by film hinges. As molded, the insert 1 is as shown in Figures 1 to 3, the main side portions 2 being in the longitudinal extension of one another.

Les zones pliables 4 sont telles que les deux parties latérales principales 2 peuvent être repliées l'une vers l'autre par rapport à la partie centrale 3 comme montré sur les figures 5 et 6, de telle sorte que l'insert 1 puisse être introduit dans le trou 101 de la traverse 100 recevant le tire-fond d'ancrage du rail. Après ce repliage, les deux parties latérales principales 2 s'étendent le long l'une de l'autre et peuvent venir prendre appui contre la traverse 100 au niveau de deux zones diamétralement opposées du trou 101, ainsi que le montre la figure 6.The foldable areas 4 are such that the two main lateral parts 2 can be folded towards one another with respect to the central part 3 as shown in FIGS. 5 and 6, so that the insert 1 can be introduced in the hole 101 of the cross member 100 receiving the anchor lag bolt of the rail. After this folding, the two main lateral parts 2 extend along one of the other and can come to bear against the cross member 100 at two diametrically opposite zones of the hole 101, as shown in FIG. 6.

Les parties latérales principales sont dimensionnées pour s'étendre, après mise en place de l'insert 1 dans le trou 101, sur une large portion de la hauteur de ce trou, comme cela est visible sur cette même figure 6.The main lateral parts are dimensioned to extend, after placing the insert 1 in the hole 101, over a large portion of the height of this hole, as can be seen in this same figure 6.

Elles présentent, au niveau de leurs portions raccordées à la partie centrale 3, des largeurs allant en se réduisant en direction de cette partie centrale.They have, at their portions connected to the central portion 3, widths decreasing towards this central portion.

Comme cela apparaît sur la figure 4, chaque partie latérale principale 2 a une forme en portion longitudinale de tube, c'est-à-dire présente une face concave 2a sur un côté et une face convexe 2b sur le côté opposé. Les faces concaves 2a des deux parties latérales principales sont, après mise en place de l'insert 1, tournées l'une vers l'autre.As shown in FIG. 4, each main lateral portion 2 has a longitudinal tube-like shape, i.e. has a concave face 2a on one side and a convex face 2b on the opposite side. The concave faces 2a of the two main lateral parts are, after introduction of the insert 1, facing each other.

Chaque partie latérale principale 2 comprend de plus des trous étagés 5 qui la traversent, ces trous mettant en communication les faces 2a et 2b de la partie latérale principale 2. Cette dernière comprend également des nervures 6 sensiblement transversales et des nervures 7 longitudinales sur sa face convexe 2b, ainsi que des rainures internes 8 aménagées à partir de sa face concave 2a, ces rainures 8 étant disposées de manière à correspondre sensiblement au filet du tire-fond.Each main lateral part 2 furthermore comprises stepped holes 5 which pass through it, these holes putting in communication the faces 2a and 2b of the main lateral part 2. The latter also comprises substantially transverse ribs 6 and longitudinal ribs 7 on its face. convex 2b, and internal grooves 8 arranged from its concave face 2a, these grooves 8 being arranged to correspond substantially to the thread of the lag bolt.

Chaque partie latérale principale 2 comprendre en outre une languette 9 prolongeant son extrémité opposée à celle reliée à la partie centrale 3, ayant une épaisseur réduite, par exemple d'environ 1 mm d'épaisseur. La face de la languette 9 se trouvant du côté de la face concave 2a se trouve dans le prolongement de cette face 2a.Each main lateral portion 2 further comprises a tongue 9 extending its opposite end to that connected to the central portion 3, having a reduced thickness, for example about 1 mm thick. The face of the tongue 9 located on the side of the concave face 2a is in the extension of this face 2a.

La partie centrale 3 est, quant à elle, dimensionnée pour, après mise en place de l'insert 1, obturer une large portion de la section du trou, ainsi que le montre la figure 6.The central portion 3 is, for its part, sized for, after placing the insert 1, close a large portion of the section of the hole, as shown in Figure 6.

Dans l'exemple représenté, elle présente une forme conique aplatie, le cône faisant saillie du même côté que celui sur lequel se trouve les faces convexes 2b.In the example shown, it has a flattened conical shape, the cone projecting from the same side as that on which the convex faces 2b are.

En pratique, comme cela se comprend en référence aux figures 5 et 6, les parties latérales principales 2 sont repliées par rapport à la partie centrale 3 au niveau des charnières-film 4, puis l'insert 1 est engagé dans le trou 101. Les languettes 9 permettent de faciliter l'orientation de l'insert 1 après mise en place dans le trou 101, afin de donner à ce dernier la position angulaire la plus adéquate selon la forme du trou.In practice, as is understood with reference to FIGS. 5 and 6, the main lateral parts 2 are folded relative to the central part 3 at the level of the film hinges 4, then the insert 1 is engaged in the hole 101. tongues 9 allow to facilitate the orientation of the insert 1 after placement in the hole 101, to give the latter the most appropriate angular position according to the shape of the hole.

La matière synthétique constituant l'insert 1 présente avantageusement une légère souplesse élastique, de sorte que le rappel élastique de cette matière permet l'existence d'une légère force d'appui des parties latérales principales 2 contre la traverse 100. Cette légère force d'appui, conjointement aux nervures 6 et 7 et aux liaisons des parties latérales principales 2 à la partie centrale 3, favorise la résistance de l'insert 1 à un déplacement angulaire ou axial dans le trou 101 au moment de la remise en place du tire-fond.The synthetic material constituting the insert 1 advantageously has a slight elastic flexibility, so that the elastic return of this material allows the existence of a slight bearing force of the main lateral parts 2 against the cross member 100. This slight force of support, together with the ribs 6 and 7 and the connections of the main lateral parts 2 to the central portion 3, promotes the resistance of the insert 1 to an angular or axial displacement in the hole 101 at the time of the repositioning of the pulls -background.

L'aménagement des faces internes des languettes 9 dans le prolongement des faces concaves 2a élimine toute présence de rebords supérieurs sur l'insert 1, contre lesquels le tire-fond risquerait de prendre appui lors de sa remise en place, ce qui contribue à réduire le risque de déplacement angulaire ou axial de l'insert lors de cette remise en place. Les extrémités supérieures des languettes 9 peuvent être légèrement évasées, ainsi que cela est représenté, pour former une entrée favorisant la réinsertion du tire-fond.The arrangement of the internal faces of the tongues 9 in the extension of the concave faces 2a eliminates any presence of upper edges on the insert 1, against which the lag bolt may be supported during its replacement, which contributes to reducing the risk of angular or axial displacement of the insert during this refitting. The upper ends of the tongues 9 may be slightly flared, as shown, to form an inlet promoting the reinsertion of the lag bolt.

Une fois l'insert 1 dans la position montrée sur la figure 6, un produit durcissable pâteux (non représenté), telle qu'une résine époxy chargée, est mis en place dans la partie inférieure du trou 101 puis le tire-fond est vissé dans l'insert 1, son filet venant coopérer avec les rainures 8 des parties latérales principales 2.Once the insert 1 in the position shown in Figure 6, a pasty curable product (not shown), such as a filled epoxy resin, is placed in the lower part of the hole 101 and the lag screw is screwed in the insert 1, its thread cooperating with the grooves 8 of the main lateral parts 2.

Ce vissage du tire-fond a pour effet d'écraser les parties latérales principales 2 entre lui-même et la traverse 100 et de faire fluer ledit produit durcissable dans les fibres du bois, notamment, grâce aux trous 5, au travers des parois latérales principales 2. La partie centrale 3 permet, de par ses dimensions et sa liaison aux deux parties latérales principales, de réduire fortement l'échappement du produit durcissable hors du trou 101, lequel débouche dans la face inférieure de la traverse 100.This screwing of the lag bolt has the effect of crushing the main lateral parts 2 between itself and the cross member 100 and to flow the curable product into the wood fibers, in particular, through the holes 5, through 2. The central portion 3 allows, because of its size and its connection to the two main lateral parts, to greatly reduce the escape of curable product from the hole 101, which opens into the underside of the cross member 100.

Comme cela apparaît de ce qui précède, l'invention fournit un insert de restauration d'un ancrage de rail de chemin de fer présentant, par rapport aux inserts homologues de la technique antérieure, les avantages déterminants de permettre une restauration solide d'un ancrage même en cas de trous élargis ou plus ou moins ovalisés en partie supérieure, de présenter un risque limité de déplacement angulaire ou axial dans le trou lors de la remise en place du tire-fond, et de limiter le risque de fuite de produit durcissable au niveau de l'extrémité inférieure du trou.As can be seen from the foregoing, the invention provides a railway rail anchor restoring insert having, with respect to prior art homologous inserts, the decisive advantages of enabling a solid restoration of an anchor even in case of holes widened or more or less ovalized in the upper part, to present a limited risk of angular or axial displacement in the hole during the replacement of the lag bolt, and to limit the risk of leakage of hardenable product. level of the lower end of the hole.

Il va de soi que l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais qu'elle s'étend à toutes les formes de réalisation couvertes par les revendications ci-annexées.It goes without saying that the invention is not limited to the embodiment described above by way of example but that it extends to all the embodiments covered by the appended claims.

Claims (10)

- Insert (1) de restauration d'un ancrage de rail de chemin de fer à une traverse en bois (100), caractérisé en ce qu'il comprend : - deux parties latérales principales (2), dimensionnées pour s'étendre, après mise en place de l'insert (1) dans le trou (101) de la traverse (100), sur une large portion de la hauteur de ce trou (101), le long l'une de l'autre ; et - une partie centrale (3) à laquelle sont reliées les deux parties latérales principales (2), cette partie centrale (3) étant disposée, après mise en place de l'insert (1) dans le trou (101), sensiblement perpendiculairement auxdites parties latérales principales (2) et étant dimensionnée pour obturer une large portion de la section du trou (101). - Insert (1) for restoring a railway rail anchor to a wooden rail (100), characterized in that it comprises: two main lateral parts (2), dimensioned to extend, after placing the insert (1) in the hole (101) of the cross member (100), over a large portion of the height of this hole ( 101), along one another; and - a central portion (3) to which are connected the two main lateral parts (2), this central portion (3) being disposed, after placing the insert (1) in the hole (101), substantially perpendicular to said main side portions (2) and being dimensioned to close off a large portion of the section of the hole (101). - Insert (1) selon la revendication 1, caractérisé en ce qu'il est réalisé en une matière susceptible d'être pliée et en ce que, avant utilisation, ses deux parties latérales principales (2) sont situées de part et d'autre de sa partie centrale (3), dans le prolongement l'une de l'autre.- Insert (1) according to claim 1, characterized in that it is made of a material capable of being folded and in that , before use, its two main lateral parts (2) are located on either side of its central part (3), in the extension of one another. - Insert (1) selon la revendication 1 ou la revendication 2, caractérisé en ce que les parties latérales principales (2) sont reliées à la partie centrale (3) par des zones flexibles, notamment par des charnières-film (4).- Insert (1) according to claim 1 or claim 2, characterized in that the main lateral parts (2) are connected to the central portion (3) by flexible zones, in particular by film hinges (4). - Insert (1) selon l'une des revendications 1 à 3, caractérisé en ce que les parties latérales principales (2) sont situées sur deux côtés opposés de ladite partie centrale (3).- Insert (1) according to one of claims 1 to 3, characterized in that the main side portions (2) are located on two opposite sides of said central portion (3). - Insert (1) selon l'une des revendications 1 à 4, caractérisé en ce que les parties latérales principales (2) ont, au niveau de leurs portions raccordées à la partie centrale (3), des largeurs allant en se réduisant en direction de cette partie centrale (3).- Insert (1) according to one of claims 1 to 4, characterized in that the main side portions (2) have, at their portions connected to the central portion (3), widths decreasing in direction from this central part (3). - Insert (1) selon l'une des revendications 1 à 5, caractérisé en ce que chaque partie latérale principale (2) a une forme en portion longitudinale de tube, c'est-à-dire présente une face concave (2a) sur un côté et une face convexe (2b) sur le côté opposé, les faces concaves (2a) des deux parties latérales principales (2) étant, après mise en place de l'insert (1), tournées l'une vers l'autre.- Insert (1) according to one of claims 1 to 5, characterized in that each main lateral portion (2) has a longitudinal portion of tube shape, that is to say has a concave face (2a) on one side and one convex face (2b) on the opposite side, the concave faces (2a) of the two parts main laterals (2) being, after placing the insert (1), facing towards each other. - Insert (1) selon l'une des revendications 1 à 6, caractérisé en ce que chaque partie latérale principale (2) comprend des trous (5) la traversant, qui mettent en communication sa face (2a) destinée à être tourné vers l'intérieur du trou (101) et sa face (2b) destinée à venir contre la traverse (100).- Insert (1) according to one of claims 1 to 6, characterized in that each main lateral portion (2) comprises holes (5) therethrough, which put in communication its face (2a) to be turned towards the inside the hole (101) and its face (2b) intended to come against the cross member (100). - Insert (1) selon l'une des revendications 1 à 7, caractérisé en ce qu'au moins une partie latérale principale (2) comprend des nervures (6, 7) sensiblement transversales et/ou longitudinales, faisant saillie de sa face (2b) destinée à prendre appui contre la traverse (100), et/ou des rainures internes (8) aménagées à partir de sa face (2a) destinée à être tournée du côté du tire-fond, ces rainures internes (8) étant disposées de manière à correspondre sensiblement au filet du tire-fond.- Insert (1) according to one of claims 1 to 7, characterized in that at least one main lateral portion (2) comprises ribs (6, 7) substantially transverse and / or longitudinal, projecting from its face ( 2b) intended to bear against the beam (100), and / or internal grooves (8) arranged from its face (2a) intended to be turned towards the lag bolt, these internal grooves (8) being arranged to substantially match the net of the lag bolt. - Insert (1) selon l'une des revendications 1 à 8, caractérisé en ce qu'au moins une partie latérale principale (2) comprend une languette (9) prolongeant son extrémité opposée à celle reliée à ladite partie centrale (3), ayant une épaisseur réduite, par exemple d'environ 1 mm d'épaisseur.- Insert (1) according to one of claims 1 to 8, characterized in that at least one main lateral portion (2) comprises a tongue (9) extending its opposite end to that connected to said central portion (3), having a reduced thickness, for example about 1 mm thick. - Insert (1) selon la revendication 9, caractérisé en ce que la face de la languette (9) destinée à être située vers l'intérieur du trou (101) après mise en place d'un insert (1) se trouve dans le prolongement de la face (2a) de la partie latérale principale (2) comportant cette languette (9) destinée à être située vers l'intérieur du trou (101) après mise en place de l'insert (1).- Insert (1) according to claim 9, characterized in that the face of the tongue (9) intended to be located towards the inside of the hole (101) after placing an insert (1) is in the extension of the face (2a) of the main lateral part (2) comprising this tongue (9) intended to be located towards the inside of the hole (101) after placement of the insert (1).
EP06356126A 2005-10-24 2006-10-24 Plug for repairing an anchoring device for a screw for railway sleeper Withdrawn EP1777344A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0510817A FR2892429B1 (en) 2005-10-24 2005-10-24 INSERT FOR THE RESTORATION OF A RAILWAY RAIL ANCHOR TO A WOODEN TRAVERSE

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EP1777344A1 true EP1777344A1 (en) 2007-04-25

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EP06356126A Withdrawn EP1777344A1 (en) 2005-10-24 2006-10-24 Plug for repairing an anchoring device for a screw for railway sleeper

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EP (1) EP1777344A1 (en)
FR (1) FR2892429B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102952375A (en) * 2011-08-26 2013-03-06 杭州大固新材料有限公司 Modified thermosetting ultrahigh-molecular epoxy resin screw spike special for railway

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD228846A1 (en) * 1984-11-12 1985-10-23 Plasta Werke Sonneberg Veb DUEBEL FROM PLASTE, PREFERABLY FOR CONCRETE SLEEVES
WO2003071033A1 (en) * 2002-02-18 2003-08-28 Vape Rail International Anchoring sheath for mounting a functional body on a substrate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD228846A1 (en) * 1984-11-12 1985-10-23 Plasta Werke Sonneberg Veb DUEBEL FROM PLASTE, PREFERABLY FOR CONCRETE SLEEVES
WO2003071033A1 (en) * 2002-02-18 2003-08-28 Vape Rail International Anchoring sheath for mounting a functional body on a substrate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102952375A (en) * 2011-08-26 2013-03-06 杭州大固新材料有限公司 Modified thermosetting ultrahigh-molecular epoxy resin screw spike special for railway

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FR2892429B1 (en) 2007-12-14
FR2892429A1 (en) 2007-04-27

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