EP1476603B1 - Anchoring sheath for mounting a functional body on a substrate - Google Patents

Anchoring sheath for mounting a functional body on a substrate Download PDF

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Publication number
EP1476603B1
EP1476603B1 EP03709916A EP03709916A EP1476603B1 EP 1476603 B1 EP1476603 B1 EP 1476603B1 EP 03709916 A EP03709916 A EP 03709916A EP 03709916 A EP03709916 A EP 03709916A EP 1476603 B1 EP1476603 B1 EP 1476603B1
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EP
European Patent Office
Prior art keywords
sheath
rim
cap
groove
opening
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Expired - Lifetime
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EP03709916A
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German (de)
French (fr)
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EP1476603A1 (en
Inventor
Edmond Mahikian
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Vape Rail International en Abrege VRI SAS
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Vape Rail International en Abrege VRI SAS
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Publication of EP1476603A1 publication Critical patent/EP1476603A1/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 anchoring sheath for assembling a functional member to a substrate in which the sheath is embedded.
  • Said functional member may in particular be a screw or a lag screw and said substrate may be a concrete block molded around the sheath.
  • a sheath according to the invention is particularly intended to be used for the fixing of a rail rail on a concrete sleeper.
  • Such sheath is delivered with a closing cap of its open end to prevent the entry of foreign bodies into its cavity, including water or chippings, when the sleeper which contains it is stored outside or placed on the yard.
  • These foreign bodies are indeed likely to oppose the screwing of a lag bolt in a sheath and, under the pressure of the lag bolt, to be at the origin of cracking of the concrete.
  • the caps are punctured by means of a bar to allow the installation of lag bolts.
  • caps normally ensure a fairly good tightness of the sleeves, but we can be certain that this seal is assured in all cases.
  • the manufacturing tolerances of the caps and sheaths can in fact leave a gap between these caps and sheaths, through which runoff water can enter the cavity of a sheath; the caps may not be perfectly depressed and held on the sheaths, and may be torn off during handling.
  • the cap comprises a cylindrical stud of limited height, intended to be engaged in the corresponding end of the sheath and to be glued to it to close this end.
  • a needle is placed in the mold so as to be stuck in the plug and to join the face of the mold opposite to that on which the sheath is located, then the concrete is molded around this sheath and of this needle. The needle is removed during demolding and allows to build a lower flow conduit.
  • the cap is removed by means of a solvent, which allows to release said lower flow conduit, to allow the evacuation of water possibly contained in the sheath.
  • a sheath for fixing a rail on a concrete cross whose lower end is provided with an inner rim and a plug that can be clipped on the rim.
  • the cap is injected with the sheath in one piece, and is connected to this sheath by a tear-off zone.
  • a peripheral wall guides the plug to the inner rim of the sheath to allow clipping.
  • the present invention aims to provide a sheath for treating the case of the presence of water in the sheath while overcoming the aforementioned drawbacks of the existing sheath.
  • Its purpose is therefore to provide a sheath to eliminate any risk of deterioration of the substrate surrounding the sheath during the establishment of a functional organ in the sheath, without the need to use a solvent to allow the erasure of any foreign bodies present in the sheath.
  • Another object of the invention is to provide a sheath remaining easy to manufacture and has a perfect seal when pouring concrete.
  • the sheath concemée receives a cap and allows the assembly of a functional organ to a substrate in which is embedded in said sheath, this sheath being open at both ends and receiving the cap at its lower end, that is to say its end intended to be embedded in the substrate, this sheath comprising, at said lower end, a radially inwardly projecting circular rim, which delimits an opening of smaller diameter than that of the cavity defined by the sheath, the stopper comprising a groove arranged in its side wall so that it can be engaged in said opening until said rim penetrates into said groove.
  • the plug is of compressible elastic material and comprises a prominent central boss and a base portion, the boss having a section greater than that of said opening and comprising said groove arranged in its side wall, at its base, so that said boss can be engaged in said opening until said rim penetrates into said groove, and said base portion being shaped for, in this position of penetration, to be applied against said rim, the projection protruding far beyond the sheath.
  • the cap and the sheath are thus easy to assemble, by engaging the boss in the lower end of the sheath and penetration of said flange into said groove.
  • the boss protrudes far inside the sheath and constitutes a compressible buffer allowing, when the said functional organ is put in place, the erasure of one or more foreign bodies possibly present in the cavity of sheath.
  • the base portion is, in turn, applied against said flange and ensures a perfect seal when pouring concrete. It also forms a lower reserve of compressibility for the case where the foreign body or bodies have a relatively large volume.
  • the invention it is thus possible to overcome the problems related to the uncertain tightness that the closing caps present.
  • the "upper" end of the sheaths, and the compressibility reserve formed by the plug is large enough to be effective in all cases.
  • the flange and the cap may be shaped so that the cap is assembled to the sheath by snapping said flange into said groove.
  • said rim may be shaped so as to define a conical opening, the largest diameter of which is situated on the outside of the sheath, and / or having a rounded zone between its outer face and its face delimiting this opening.
  • the rim and the cap may be shaped so that the cap is assembled to the sheath by means other than snap-fastening, in particular by screwing.
  • the central boss of the cap comprises a thread sized to cooperate with the flange, which communicates with said groove.
  • Said base portion may extend, in the radial direction, beyond the flange and cover a portion of the lower end of the sheath, which strengthens the resistance of the mounting of the plug on the sheath.
  • the lower end of the sheath and said base portion may have reciprocal interlocking areas, which increase the contact area between the base portion and the sheath, and help to maintain this base portion in close application against the lower end of the sheath.
  • this lower end may have an outer peripheral recess at the junction of the side wall of the sheath and said rim, and the base portion may comprise a clean peripheral rim to be applied against the sheath at this recess.
  • Said reciprocal nesting zones may further be shaped to snap or wedge said base portion on the lower end of the sheath.
  • Figure 1 shows an anchor sheath 1 used for mounting a rail rail on a concrete cross.
  • This sheath. 1 is, according to a well known technique, intended to be embedded in cast concrete in the form of a railroad tie, so that one of its ends opens on the upper face of this cross, and to receive a lag bolt to secure a rail.
  • the sheath 1 comprises external annular protrusions 2 for its support in the concrete and an internal thread 3 to allow the screwing of the lag bolt.
  • the sheath 1 is open not only at its "upper” end, that is to say the one by which the lag bolt is intended to be engaged in it, but also at its "lower” end 1b, that is, that is intended to be embedded in the concrete, and receives a closure cap 4 of this end 1b.
  • the sheath 1 comprises a circular rim 5 projecting radially inwards, which delimits an opening of smaller diameter than that of the cavity defined by the sheath 1.
  • the plug 4 is made of compressible elastic material. It comprises a boss 4a and a base portion 4d, and has a median cross-section greater than that of the opening defined by the rim 5, the ends of smaller section than this opening and flared transition areas between this middle part and these ends. A groove 6 adapted to closely receive the flange 5 is arranged at the middle portion.
  • the cap 4 is intended to be inserted into the opening defined by the flange 5 so as to deform inwardly its portion 4a, until penetration of the rim 5 in the groove 6.
  • the elastic return the material of the plug 4 ensures the maintenance of this plug 4 in position relative to the sheath 1.
  • the plug 4 For its insertion mechanically, the plug 4 comprises cavities at its ends, allowing the support of an insertion tool.
  • the part of the plug 4 engaged in the sheath 1 forms a protruding central boss, which protrudes far beyond the sheath 1 and makes it possible, during the installation of the lag bolt, erasing one or more foreign bodies possibly present in the cavity of the sheath 1.
  • the part of the plug 4 located outside the sheath 1 is applied against the rim 5 so as to ensure a perfect seal of the sheath 1 during the casting of the concrete.
  • This part of the plug 4 located outside the sheath 1 also forms an additional reserve of compressibility with respect to the concrete.
  • the plug 4 is intended to be assembled to the sheath 1 by screwing. It comprises a prominent central boss 4a in which is arranged a thread 7, which communicates with the groove 6. This thread 7 allows the screwing of the plug 4 until narrow application of the base portion 4d of the plug 4 against the flange 5.
  • the base portion 4d may comprise a cavity opening on its outer face, in particular of hexagonal shape, allowing the support of an insertion tool in a mechanized manner of the plug 4 in the sheath 1.
  • the flange 5 delimits a conical opening, the largest diameter of which is located on the outside of the sheath 1, and has a rounded zone 5a between its outer face and its face delimiting this opening.
  • the outer face of the rim 5 forms a circular projection 8 with a "V" -shaped section and a peripheral recess is provided at the junction of the side wall of the sheath 1 and the rim 5.
  • the base portion 4d of the plug 4 extends, in the radial direction, beyond the rim 5 and covers a portion of the lower end of the sheath 1.
  • This base portion 4d comprises a groove shaped to be tightly engaged on the projection 8 when the cap 4 is assembled to the sheath 1, and a flange 9 shaped to be engaged in said recess.
  • the end 1b of the sheath 1 and the base portion 4d thus have reciprocal interlocking zones which increase the contact area between the base part 4d and the sheath 1 and contribute to keeping this base part 4d in close application. against the lower end of the sheath 1.
  • the invention provides a decisive improvement to the prior art, by providing an anchoring sheath to eliminate any risk of deterioration of the substrate surrounding the sheath during the establishment of a functional organ in this sheath, without the need to use a solvent to allow the erasure of any foreign bodies present in the sheath.
  • This sheath is easier to manufacture and has a perfect seal when pouring concrete.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Dowels (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Multi-Conductor Connections (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The anchoring sleeve, e.g. to receive a screw or long bolt embedded in a cast concrete component such as a railway sleeper, is open at both ends, with its lower end (1b) having an inward projecting circular rim (5) forming an aperture of smaller diameter than the rest of the sleeve and designed to engage with an annular groove (6) in a compressible elastic plug (4). The plug is shaped to clip into place, having a central boss (4a) and a base (4d) that covers the end of the sleeve. In variants of the design the plug can be made double-sided so it can be fitted into the sleeve either way round, or it can have a threaded surface and screw into place.

Description

La présente invention concerne une gaine d'ancrage permettant l'assemblage d'un organe fonctionnel à un substrat dans lequel est noyée la gaine. Ledit organe fonctionnel peut en particulier être une vis ou un tire-fond et ledit substrat peut être un bloc de béton moulé autour de la gaine.The present invention relates to an anchoring sheath for assembling a functional member to a substrate in which the sheath is embedded. Said functional member may in particular be a screw or a lag screw and said substrate may be a concrete block molded around the sheath.

Une gaine selon l'invention est notamment destinée à être utilisée pour la fixation d'un rail ferroviaire sur une traverse en béton.A sheath according to the invention is particularly intended to be used for the fixing of a rail rail on a concrete sleeper.

Dans cette application spécifique, il est bien connu d'utiliser des gaines en matière synthétique fermées à une de leurs extrémités. Ces gaines sont noyées dans du béton moulé à la forme d'une traverse de chemin de fer, de telle sorte que leurs extrémités ouvertes débouchent sur la face supérieure de cette traverse, et reçoivent les tire-fonds assurant la fixation des rails.In this specific application, it is well known to use synthetic sheaths closed at one of their ends. These sheaths are embedded in cast concrete in the form of a railroad tie, so that their open ends open on the upper face of the cross, and receive lag bolts for fixing the rails.

Une telle gaine est livrée avec un capuchon de fermeture de son extrémité ouverte permettant d'éviter la pénétration de corps étrangers dans sa cavité, notamment d'eau ou de gravillons, lorsque la traverse qui la comporte est stockée en extérieur ou mise en place sur le chantier. Ces corps étrangers sont en effet susceptibles de s'opposer au vissage d'un tire-fond dans une gaine et, sous la pression du tire-fond, d'être à l'origine de fissurations du béton. Lors de la fixation du rail, les capuchons sont crevés au moyen d'une barre pour permettre la mise en place des tire-fonds.Such sheath is delivered with a closing cap of its open end to prevent the entry of foreign bodies into its cavity, including water or chippings, when the sleeper which contains it is stored outside or placed on the yard. These foreign bodies are indeed likely to oppose the screwing of a lag bolt in a sheath and, under the pressure of the lag bolt, to be at the origin of cracking of the concrete. When fixing the rail, the caps are punctured by means of a bar to allow the installation of lag bolts.

Ces capuchons permettent normalement d'assurer une assez bonne étanchéité des gaines, sans que l'on puisse toutefois être certain que cette étanchéité est assurée dans tous les cas. En effet, les tolérances de fabrication des capuchons et des gaines peuvent en effet laisser exister un interstice entre ces capuchons et gaines, par lequel de l'eau de ruissellement peut pénétrer dans la cavité d'une gaine ; les capuchons peuvent ne pas être parfaitement enfoncés et maintenus sur les gaines, et peuvent être arrachés lors des manipulations.These caps normally ensure a fairly good tightness of the sleeves, but we can be certain that this seal is assured in all cases. In fact, the manufacturing tolerances of the caps and sheaths can in fact leave a gap between these caps and sheaths, through which runoff water can enter the cavity of a sheath; the caps may not be perfectly depressed and held on the sheaths, and may be torn off during handling.

Le risque de fissuration du béton en cas de corps étrangers a pu être limité en équipant la gaine d'une coque métallique extérieure, formée par deux demi-coquilles assemblées. Cette coque augmente toutefois sensiblement le coût de fabrication d'une gaine.The risk of cracking of concrete in case of foreign bodies could be limited by equipping the sheath with an outer metal shell, formed by two assembled half-shells. This shell however significantly increases the cost of manufacturing a sheath.

Pour remédier à ce même problème de fissuration, il a été conçu de réaliser une gaine ouverte à ses deux extrémités et d'équiper l'extrémité "inférieure" de la gaine, c'est-à-dire l'extrémité destinée à être noyée dans le béton, d'un bouchon en matériau destructible, notamment en polystyrène expansé. Dans cette gaine, le bouchon comprend un plot cylindrique de hauteur limitée, destiné à être engagé dans l'extrémité correspondante de la gaine et à être collé à celle-ci pour fermer cette extrémité. Lors du moulage du béton, une aiguille est mise en place dans le moule de manière à être fichée dans le bouchon et à rejoindre la face du moule opposée à celle sur laquelle se trouve la gaine, puis le béton est moulé autour de cette gaine et de cette aiguille. L'aiguille est retirée lors du démoulage et permet d'aménager un conduit inférieur d'écoulement. Au moment de la mise en place du tire-fond, le bouchon est éliminé au moyen d'un solvant, ce qui permet de libérer ledit conduit inférieur d'écoulement, pour permettre l'évacuation de l'eau éventuellement contenue dans la gaine.To remedy this same problem of cracking, it was conceived to make an open sheath at both ends and to equip the "lower" end of the sheath, that is to say the end intended to be drowned. in the concrete, a plug of destructible material, especially expanded polystyrene. In this sheath, the cap comprises a cylindrical stud of limited height, intended to be engaged in the corresponding end of the sheath and to be glued to it to close this end. During the molding of the concrete, a needle is placed in the mold so as to be stuck in the plug and to join the face of the mold opposite to that on which the sheath is located, then the concrete is molded around this sheath and of this needle. The needle is removed during demolding and allows to build a lower flow conduit. At the time of installation of the lag bolt, the cap is removed by means of a solvent, which allows to release said lower flow conduit, to allow the evacuation of water possibly contained in the sheath.

Cette technique, si elle est efficace à l'égard d'une faible quantité d'eau non gelée, n'est en revanche pas efficace lorsque de l'eau en quantité relativement importante se trouve dans le fond de la gaine, ou lorsque de l'eau gelée ou des gravillons se trouve dans ce même fond. L'eau en quantité relativement importante ou l'eau gelée empêche en effet le solvant de venir au contact du bouchon, et les gravillons ne peuvent s'évacuer par ledit conduit inférieur d'écoulement, dont la section est limitée. La nécessité d'utiliser un solvant sur le chantier, en quantité déterminée pour chaque gaine, est de plus une contrainte pratique certaine.This technique, if it is effective against a small amount of unfrozen water, is however not effective when water in relatively large amount is in the bottom of the sheath, or when frozen water or gravel is in the same bottom. The water in relatively large quantity or the frozen water prevents the solvent from coming into contact with the plug, and the chippings can not escape through said lower flow conduit, whose section is limited. The need to use a solvent on site, in a quantity determined for each sheath, is also a certain practical constraint.

On connaît également par le document N° DD 228 846 une gaine pour fixer un rail sur une traverse en béton, dont l'extrémité inférieure est pourvue d'un rebord interne et d'un bouchon pouvant être clipsé sur ce rebord. Le bouchon est injecté avec la gaine en une pièce, et est relié à cette gaine par une zone déchirable. Une paroi périphérique permet de guider le bouchon vers le rebord interne de la gaine pour permettre le clipsage.Also known from document No. DD 228 846 a sheath for fixing a rail on a concrete cross, whose lower end is provided with an inner rim and a plug that can be clipped on the rim. The cap is injected with the sheath in one piece, and is connected to this sheath by a tear-off zone. A peripheral wall guides the plug to the inner rim of the sheath to allow clipping.

Ce document ainsi décrit une gaine à bouchon en un matériau de même nature que la cheville, et donc relativement rigide, ne permettant pas de traiter le cas de la présence d'eau dans la gaine.This document thus describes a plug-shaped sheath of a material of the same nature as the peg, and therefore relatively rigid, not making it possible to treat the case of the presence of water in the sheath.

La présente invention vise à fournir une gaine permettant traiter le cas de la présence d'eau dans la gaine tout en remédiant aux inconvénients précités de la gaine existante.The present invention aims to provide a sheath for treating the case of the presence of water in the sheath while overcoming the aforementioned drawbacks of the existing sheath.

Son objectif est donc de fournir une gaine permettant d'éliminer tout risque de détérioration du substrat entourant la gaine lors de la mise en place d'un organe fonctionnel dans cette gaine, sans nécessité d'utiliser un solvant pour permettre l'effacement d'éventuels corps étrangers présents dans la gaine.Its purpose is therefore to provide a sheath to eliminate any risk of deterioration of the substrate surrounding the sheath during the establishment of a functional organ in the sheath, without the need to use a solvent to allow the erasure of any foreign bodies present in the sheath.

Un autre objectif de l'invention est de fournir une gaine restant facile à fabriquer et présent une parfaite étanchéité au moment du coulage du béton.Another object of the invention is to provide a sheath remaining easy to manufacture and has a perfect seal when pouring concrete.

La gaine concemée reçoit un bouchon et permet l'assemblage d'un organe fonctionnel à un substrat dans lequel est noyée ladite gaine, cette gaine étant ouverte à ses deux extrémités et recevant le bouchon à son extrémité inférieure, c'est-à-dire son extrémité destinée à être noyée dans le substrat, cette gaine comprenant, au niveau de ladite extrémité inférieure, un rebord circulaire faisant saillie radialement vers l'intérieur, qui délimite une ouverture de plus faible diamètre que celui de la cavité délimitée par la gaine, le bouchon comprenant une gorge aménagée dans sa paroi latérale de telle sorte qu'il puisse être engagé dans ladite ouverture jusqu'à pénétration dudit rebord dans ladite gorge.The sheath concemée receives a cap and allows the assembly of a functional organ to a substrate in which is embedded in said sheath, this sheath being open at both ends and receiving the cap at its lower end, that is to say its end intended to be embedded in the substrate, this sheath comprising, at said lower end, a radially inwardly projecting circular rim, which delimits an opening of smaller diameter than that of the cavity defined by the sheath, the stopper comprising a groove arranged in its side wall so that it can be engaged in said opening until said rim penetrates into said groove.

Selon l'invention, telle que définie par la revendication 1 annexée, le bouchon est en matériau élastique compressible et comprend un bossage central proéminent ainsi qu'une partie de base, le bossage ayant une section supérieure à celle de ladite ouverture et comprenant ladite gorge aménagée dans sa paroi latérale, au niveau de sa base, de telle sorte que ledit bossage puisse être engagé dans ladite ouverture jusqu'à pénétration dudit rebord dans ladite gorge, et ladite partie de base étant conformée pour, dans cette position de pénétration, être appliquée contre ledit rebord , le bossage dépassant largement à l'intérieur de la gaine.According to the invention, as defined by appended claim 1, the plug is of compressible elastic material and comprises a prominent central boss and a base portion, the boss having a section greater than that of said opening and comprising said groove arranged in its side wall, at its base, so that said boss can be engaged in said opening until said rim penetrates into said groove, and said base portion being shaped for, in this position of penetration, to be applied against said rim, the projection protruding far beyond the sheath.

Le bouchon et la gaine sont ainsi faciles à assembler, par engagement du bossage dans l'extrémité inférieure de la gaine et pénétration dudit rebord dans ladite gorge. Lorsque cet assemblage est réalisé, le bossage dépasse largement à l'intérieur de la gaine et constitue un tampon compressible permettant, lors de la mise en place dudit organe fonctionnel, l'effacement d'un ou plusieurs corps étrangers éventuellement présents dans la cavité de la gaine.The cap and the sheath are thus easy to assemble, by engaging the boss in the lower end of the sheath and penetration of said flange into said groove. When this assembly is carried out, the boss protrudes far inside the sheath and constitutes a compressible buffer allowing, when the said functional organ is put in place, the erasure of one or more foreign bodies possibly present in the cavity of sheath.

La partie de base est, quant à elle, appliquée contre ledit rebord et assure une parfaite étanchéité lors du coulage du béton. Elle forme en outre une réserve inférieure de compressibilité pour le cas où le ou les corps étrangers auraient un volume relativement important.The base portion is, in turn, applied against said flange and ensures a perfect seal when pouring concrete. It also forms a lower reserve of compressibility for the case where the foreign body or bodies have a relatively large volume.

Grâce à l'invention, il est ainsi possible de s'affranchir des problèmes liés à l'étanchéité incertaine que présentent les capuchons fermant l'extrémité "supérieure" des gaines, et la réserve de compressibilité formée par le bouchon est suffisamment importante pour être efficace dans tous les cas.Thanks to the invention, it is thus possible to overcome the problems related to the uncertain tightness that the closing caps present. the "upper" end of the sheaths, and the compressibility reserve formed by the plug is large enough to be effective in all cases.

Le rebord et le bouchon peuvent être conformés de telle sorte que le bouchon soit assemblable à la gaine par encliquetage dudit rebord dans ladite gorge.The flange and the cap may be shaped so that the cap is assembled to the sheath by snapping said flange into said groove.

Dans ce cas, ledit rebord peut être conformé de manière à délimiter une ouverture de forme conique, dont le plus grand diamètre est situé sur l'extérieur de la gaine, et/ou présenter une zone arrondie entre sa face extérieure et sa face délimitant cette ouverture.In this case, said rim may be shaped so as to define a conical opening, the largest diameter of which is situated on the outside of the sheath, and / or having a rounded zone between its outer face and its face delimiting this opening.

Ces dispositions facilitent l'engagement du bossage au travers de l'ouverture.These arrangements facilitate the engagement of the boss through the opening.

Le rebord et le bouchon peuvent être conformés de telle sorte que le bouchon soit assemblable à la gaine par d'autres moyens qu'un encliquetage, notamment par vissage.The rim and the cap may be shaped so that the cap is assembled to the sheath by means other than snap-fastening, in particular by screwing.

Dans le cas d'un assemblage par vissage, le bossage central du bouchon comprend un filet dimensionné pour coopérer avec le rebord, qui communique avec ladite gorge.In the case of an assembly by screwing, the central boss of the cap comprises a thread sized to cooperate with the flange, which communicates with said groove.

Ladite partie de base peut s'étendre, dans la direction radiale, au-delà du rebord et recouvrir une partie de l'extrémité inférieure de la gaine, ce qui renforce la résistance du montage du bouchon sur la gaine.Said base portion may extend, in the radial direction, beyond the flange and cover a portion of the lower end of the sheath, which strengthens the resistance of the mounting of the plug on the sheath.

L'extrémité inférieure de la gaine et ladite partie de base peuvent présenter des zones d'emboîtement réciproque, qui augmentent la surface de contact entre la partie de base et la gaine, et contribuent à maintenir cette partie de base en application étroite contre l'extrémité inférieure de la gaine. Notamment, cette extrémité inférieure peut présenter un évidement périphérique extérieur au niveau de la jonction de la paroi latérale de la gaine et dudit rebord, et la partie de base peut comprendre un rebord périphérique propre à s'appliquer contre la gaine au niveau de cet évidement.The lower end of the sheath and said base portion may have reciprocal interlocking areas, which increase the contact area between the base portion and the sheath, and help to maintain this base portion in close application against the lower end of the sheath. In particular, this lower end may have an outer peripheral recess at the junction of the side wall of the sheath and said rim, and the base portion may comprise a clean peripheral rim to be applied against the sheath at this recess. .

Lesdites zones d'emboîtement réciproque peuvent en outre être conformées pour réaliser un encliquetage ou un coincement de ladite partie de base sur l'extrémité inférieure de la gaine.Said reciprocal nesting zones may further be shaped to snap or wedge said base portion on the lower end of the sheath.

Pour sa bonne compréhension, l'invention est à nouveau décrite ci-dessous en référence au dessin schématique annexé représentant, à titre d'exemple non limitatif, plusieurs formes de réalisation possibles de la gaine d'ancrage qu'elle concerne.

  • La figure 1 en est une vue selon une première forme de réalisation, en coupe passant par l'axe de la gaine ;
  • la figure 2 est une vue en perspective du bouchon que comprend cette gaine ;
  • la figure 3 est une vue partielle de la gaine selon une deuxième forme de réalisation, en coupe passant par l'axe de la gaine ;
  • la figure 4 est une vue en perspective du bouchon comprend cette gaine ;
  • la figure 5 est une vue partielle de la gaine selon une troisième forme de réalisation, en coupe passant par l'axe de la gaine, et
  • la figure 6 est une demi-vue en coupe, à échelle agrandie, de cette gaine.
For a good understanding, the invention is again described below with reference to the attached schematic drawing showing, by way of non-limiting example, several possible embodiments of the anchor sheath it relates.
  • Figure 1 is a view according to a first embodiment, in section passing through the axis of the sheath;
  • Figure 2 is a perspective view of the plug that includes this sheath;
  • Figure 3 is a partial view of the sheath according to a second embodiment, in section passing through the axis of the sheath;
  • Figure 4 is a perspective view of the cap comprises this sheath;
  • FIG. 5 is a partial view of the sheath according to a third embodiment, in section passing through the axis of the sheath, and
  • Figure 6 is a half-sectional view, on an enlarged scale, of this sheath.

Par simplification, les éléments ou partie d'éléments qui se retrouvent d'une forme de réalisation à une autre sont désignés par les mêmes références numériques.For simplicity, the elements or part of elements that are found from one embodiment to another are designated by the same reference numerals.

La figure 1 représente une gaine d'ancrage 1 utilisable pour le montage d'un rail ferroviaire sur une traverse en béton. Cette gaine. 1 est, selon une technique bien connue, destinée à être noyée dans du béton moulé à la forme d'une traverse de chemin de fer, de telle sorte que l'une de ses extrémités débouche sur la face supérieure de cette traverse, et à recevoir un tire-fond assurant la fixation d'un rail.Figure 1 shows an anchor sheath 1 used for mounting a rail rail on a concrete cross. This sheath. 1 is, according to a well known technique, intended to be embedded in cast concrete in the form of a railroad tie, so that one of its ends opens on the upper face of this cross, and to receive a lag bolt to secure a rail.

La gaine 1 comprend des saillies annulaires extérieures 2 pour sa prise d'appui dans le béton et un filet intérieur 3 pour permettre le vissage du tire-fond.The sheath 1 comprises external annular protrusions 2 for its support in the concrete and an internal thread 3 to allow the screwing of the lag bolt.

La gaine 1 est ouverte non seulement à son extrémité "supérieure", c'est-à-dire celle par laquelle le tire-fond est destiné à être engagé en elle, mais également à son extrémité "inférieure" 1b, c'est-à-dire celle destinée à être noyée dans le béton, et reçoit un bouchon 4 de fermeture de cette extrémité 1 b.The sheath 1 is open not only at its "upper" end, that is to say the one by which the lag bolt is intended to be engaged in it, but also at its "lower" end 1b, that is, that is intended to be embedded in the concrete, and receives a closure cap 4 of this end 1b.

Au niveau de cette extrémité 1b, la gaine 1 comprend un rebord circulaire 5 faisant saillie radialement vers l'intérieur, qui délimite une ouverture de plus faible diamètre que celui de la cavité délimitée par la gaine 1.At this end 1b, the sheath 1 comprises a circular rim 5 projecting radially inwards, which delimits an opening of smaller diameter than that of the cavity defined by the sheath 1.

Le bouchon 4 est en matériau élastique compressible. Il comprend un bossage 4a et une partie de base 4d, et présente une partie médiane de section transversale supérieure à celle de l'ouverture délimitée par le rebord 5, des extrémités de plus faible section que cette ouverture et des zones de transition évasées entre cette partie médiane et ces extrémités. Une gorge 6 propre à recevoir étroitement le rebord 5 est aménagée au niveau de la partie médiane.The plug 4 is made of compressible elastic material. It comprises a boss 4a and a base portion 4d, and has a median cross-section greater than that of the opening defined by the rim 5, the ends of smaller section than this opening and flared transition areas between this middle part and these ends. A groove 6 adapted to closely receive the flange 5 is arranged at the middle portion.

Comme cela se comprend aisément, le bouchon 4 est destiné à être inséré dans l'ouverture délimitée par le rebord 5 de manière à déformer vers l'intérieur sa partie 4a, jusqu'à pénétration du rebord 5 dans la gorge 6. Le rappel élastique du matériau du bouchon 4 assure le maintien de ce bouchon 4 en position par rapport à la gaine 1.As is easily understood, the cap 4 is intended to be inserted into the opening defined by the flange 5 so as to deform inwardly its portion 4a, until penetration of the rim 5 in the groove 6. The elastic return the material of the plug 4 ensures the maintenance of this plug 4 in position relative to the sheath 1.

Pour son insertion de manière mécanisée, le bouchon 4 comprend des cavités à ses extrémités, permettant la prise d'appui d'un outil d'insertion. Dans ladite position d'assemblage, la partie du bouchon 4 engagée dans la gaine 1 forme un bossage central proéminent, qui dépasse largement à l'intérieur de la gaine 1 et permet, lors de la mise en place du tire-fond, l'effacement d'un ou plusieurs corps étrangers éventuellement présents dans la cavité de la gaine 1. La partie du bouchon 4 située hors de la gaine 1 est appliquée contre le rebord 5 de manière à assurer une parfaite étanchéité de la gaine 1 lors du coulage du béton. Cette partie du bouchon 4 située hors de la gaine 1 forme par ailleurs une réserve supplémentaire de compressibilité par rapport au béton.For its insertion mechanically, the plug 4 comprises cavities at its ends, allowing the support of an insertion tool. In said assembly position, the part of the plug 4 engaged in the sheath 1 forms a protruding central boss, which protrudes far beyond the sheath 1 and makes it possible, during the installation of the lag bolt, erasing one or more foreign bodies possibly present in the cavity of the sheath 1. The part of the plug 4 located outside the sheath 1 is applied against the rim 5 so as to ensure a perfect seal of the sheath 1 during the casting of the concrete. This part of the plug 4 located outside the sheath 1 also forms an additional reserve of compressibility with respect to the concrete.

Dans la forme de réalisation représentée sur les figures 3 et 4, le bouchon 4 est destiné à être assemblé à la gaine 1 par vissage. Il comprend un bossage central proéminent 4a dans lequel est aménagé un filet 7, qui communique avec la gorge 6. Ce filet 7 permet le vissage du bouchon 4 jusqu'à application étroite de la partie de base 4d du bouchon 4 contre le rebord 5.In the embodiment shown in Figures 3 and 4, the plug 4 is intended to be assembled to the sheath 1 by screwing. It comprises a prominent central boss 4a in which is arranged a thread 7, which communicates with the groove 6. This thread 7 allows the screwing of the plug 4 until narrow application of the base portion 4d of the plug 4 against the flange 5.

La partie de base 4d peut comprendre une cavité débouchant sur sa face extérieure, notamment de forme hexagonale, permettant la prise d'appui d'un outil d'insertion de manière mécanisée du bouchon 4 dans la gaine 1.The base portion 4d may comprise a cavity opening on its outer face, in particular of hexagonal shape, allowing the support of an insertion tool in a mechanized manner of the plug 4 in the sheath 1.

Dans la forme de réalisation montrée sur les figures 5 et 6, le rebord 5 délimite une ouverture de forme conique, dont le plus grand diamètre est situé sur l'extérieur de la gaine 1, et présente une zone arrondie 5a entre sa face extérieure et sa face délimitant cette ouverture. Ces dispositions facilitent l'engagement du bossage 4a au travers de cette ouverture.In the embodiment shown in FIGS. 5 and 6, the flange 5 delimits a conical opening, the largest diameter of which is located on the outside of the sheath 1, and has a rounded zone 5a between its outer face and its face delimiting this opening. These arrangements facilitate the engagement boss 4a through this opening.

La face extérieure du rebord 5 forme une saillie circulaire 8 à section en forme de "V" et un évidement périphérique est aménagé au niveau de la jonction de la paroi latérale de la gaine 1 et du rebord 5.The outer face of the rim 5 forms a circular projection 8 with a "V" -shaped section and a peripheral recess is provided at the junction of the side wall of the sheath 1 and the rim 5.

La partie de base 4d du bouchon 4 s'étend, dans la direction radiale, au-delà du rebord 5 et recouvre une partie de l'extrémité inférieure de la gaine 1. Cette partie de base 4d comprend une gorge conformée pour être engagée étroitement sur la saillie 8 lorsque le bouchon 4 est assemblé à la gaine 1, et un rebord 9 conformé être engagé dans ledit évidement.The base portion 4d of the plug 4 extends, in the radial direction, beyond the rim 5 and covers a portion of the lower end of the sheath 1. This base portion 4d comprises a groove shaped to be tightly engaged on the projection 8 when the cap 4 is assembled to the sheath 1, and a flange 9 shaped to be engaged in said recess.

L'extrémité 1b de la gaine 1 et la partie de base 4d présentent ainsi des zones d'emboîtement réciproque qui augmentent la surface de contact entre la partie de base 4d et la gaine 1 et contribuent à maintenir cette partie de base 4d en application étroite contre l'extrémité inférieure de la gaine 1.The end 1b of the sheath 1 and the base portion 4d thus have reciprocal interlocking zones which increase the contact area between the base part 4d and the sheath 1 and contribute to keeping this base part 4d in close application. against the lower end of the sheath 1.

Il apparaît de ce qui précède que l'invention apporte une amélioration déterminante à la technique antérieure, en fournissant une gaine d'ancrage permettant d'éliminer tout risque de détérioration du substrat entourant la gaine lors de la mise en place d'un organe fonctionnel dans cette gaine, sans nécessité d'utiliser un solvant pour permettre l'effacement d'éventuels corps étrangers présents dans la gaine. Cette gaine reste de plus facile à fabriquer et présente une parfaite étanchéité au moment du coulage du béton.It appears from the above that the invention provides a decisive improvement to the prior art, by providing an anchoring sheath to eliminate any risk of deterioration of the substrate surrounding the sheath during the establishment of a functional organ in this sheath, without the need to use a solvent to allow the erasure of any foreign bodies present in the sheath. This sheath is easier to manufacture and has a perfect seal when pouring concrete.

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 en embrasse au contraire toutes les variantes de réalisation entrant dans le champ de protection défini 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 embraces on the contrary all variants within the scope of protection defined by the claims appended.

Claims (10)

  1. An anchoring device (1) comprising a sheath (1) receiving a cap (4) and allowing the construction of a functional organ to a substrate in which said sheath is embedded, this sheath being open on both extremities and receiving the cap (4) at its lower extremity (1b), that is, its extremity designed to be embedded in the substrate, this sheath comprising, at the level of said lower extremity, a circular rim (5) which radially protrudes towards the inside and defines an opening with a smaller diameter than that of the cavity defined by the sheath, the cap comprising a groove (6) provided in its lateral wall in such a way that it may be engaged in said opening until penetration of said rim in said groove;
    The device characterized in that the cap (4) is in a compressible elastic material and comprises a raised central boss (4a) as well as a base part (4d), the boss having a section larger than that of said opening and comprising said groove (6) provided in its lateral wall, at the level of its base, in such a way that said boss (4a) may be engaged in said opening until penetration of said rim (5) into said groove, and said base part (4d) is formed such that the base engages with said rim in this penetration position, the boss largely projecting inside the sheath.
  2. The device (1) according to claim 1, characterized in that the rim (5) and the cap (4) are formed in such a way that the cap (4) is constructed to the sheath (1) by catching said rim (5) into said groove (6).
  3. The device (1) according to claim 2, characterized in that the rim (5) is formed in such a manner as to define a conical shaped opening, whose largest diameter is situated on the outside of the sheath (1).
  4. The device (1) according to claim 2 or claim 3, characterized in that the rim (5) presents a rounded zone between the outer face of this rim (5) and the face of this rim (5) defining said opening.
  5. The device (1) according to claim 1, characterized in that the rim (5) and the cap (4) are formed in such a way that the cap (4) is constructed to the sheath (1) by screwing, the central boss of the cap (4) comprising a thread sized to cooperate with said rim (5), this thread communicating with said groove (6).
  6. The device (1) according to one of claims 1 to 5, characterized in that said base part (4d) extends radially beyond the rim (5) and covers a part of the lower extremity (1b) of the sheath (1).
  7. The device (1) according to one of claims 1 to 6, characterized in that the lower extremity (1b) of the sheath (1) and said base part (4d) present areas of reciprocal nesting.
  8. The device (1) according to claim 7, characterized in that the lower extremity of the sheath (1) presents a peripheral external recess at the level of the junction of the lateral wall of the sheath (1) and said rim (5), and in that said base part (4d) comprises a peripheral rim (9) suitable for engaging the sheath (1) at the level of this recess.
  9. The device (1) according to claim 7 or claim 8, characterized in that said reciprocal nesting areas are formed to achieve a catching or wedging of said base part (4d) on the lower extremity (1b) of the sheath (1).
  10. The utilization of the anchoring device (1) according to one of claims 1 to 9 for mounting a rail on a concrete tie.
EP03709916A 2002-02-18 2003-02-04 Anchoring sheath for mounting a functional body on a substrate Expired - Lifetime EP1476603B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0202030A FR2836165B1 (en) 2002-02-18 2002-02-18 ANCHORING SHEATH FOR ASSEMBLING A FUNCTIONAL MEMBER TO A SUBSTRATE IN WHICH THE SHEATH IS DRIED
FR0202030 2002-02-18
PCT/FR2003/000334 WO2003071033A1 (en) 2002-02-18 2003-02-04 Anchoring sheath for mounting a functional body on a substrate

Publications (2)

Publication Number Publication Date
EP1476603A1 EP1476603A1 (en) 2004-11-17
EP1476603B1 true EP1476603B1 (en) 2006-04-05

Family

ID=27636272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03709916A Expired - Lifetime EP1476603B1 (en) 2002-02-18 2003-02-04 Anchoring sheath for mounting a functional body on a substrate

Country Status (7)

Country Link
EP (1) EP1476603B1 (en)
AT (1) ATE322581T1 (en)
AU (1) AU2003214346A1 (en)
DE (1) DE60304452D1 (en)
ES (1) ES2260613T3 (en)
FR (1) FR2836165B1 (en)
WO (1) WO2003071033A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1815067A4 (en) * 2004-07-26 2008-09-03 Global Engineered Fasteners Pt Attachment of components to composite materials
FR2892429B1 (en) * 2005-10-24 2007-12-14 Edmond Mahikian INSERT FOR THE RESTORATION OF A RAILWAY RAIL ANCHOR TO A WOODEN TRAVERSE
FR2970717B1 (en) * 2011-01-20 2014-06-27 Vape Rail Int ANCHORING DEVICE FOR FASTENING A RAILWAY RAIL RAIL TO A TRAVERSE

Family Cites Families (4)

* 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
DE3629030A1 (en) * 1986-08-27 1988-04-14 Wayss & Freytag Ag DEVICE FOR FIXING TUBULAR INSTALLATION COMPONENTS
US5740651A (en) * 1994-03-18 1998-04-21 Vape Rail International S.A. Anchoring sleeve
DK1116826T3 (en) * 2000-01-10 2005-08-08 Ars Ind Anchor bolt for fastening in a concrete element

Also Published As

Publication number Publication date
EP1476603A1 (en) 2004-11-17
ATE322581T1 (en) 2006-04-15
AU2003214346A1 (en) 2003-09-09
ES2260613T3 (en) 2006-11-01
WO2003071033A1 (en) 2003-08-28
FR2836165A1 (en) 2003-08-22
FR2836165B1 (en) 2004-11-26
DE60304452D1 (en) 2006-05-18

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