DK1916336T3

DK1916336T3 - Insulation and sealing device for a rail mounted on sleepers, in particular for a tramway track structure

Info

Publication number: DK1916336T3
Application number: DK06356124.5T
Authority: DK
Inventors: Patrice Boulesteix
Original assignee: Plastiform's
Priority date: 2006-10-19
Filing date: 2006-10-19
Publication date: 2017-03-13
Also published as: ES2618559T3; EP1916336A1; EP1916336B1; PL1916336T3

Description

This invention relates to an insulating and sealing device of a rail of rolling stock, of the tram type, mounted on sleepers.

During the installation of a tram line, as shown in figure 1, sleepers 2 are placed on a concrete slab after which rails 3 are fastened to these sleepers 2 using means for fastening, with these means for fastening then being protected by protective covers 4.

When the rail is fastened to the sleepers, an insulating and sealing device is positioned on the rail in order to insulate and to render it sealed with respect to its outside environment.

This type of device generally comprises, as shown in figure 2, two sealed parts 5, 6 called lip rail splices which are adapted respectively to each side of the profile comprising the rail 3, with the lips 7 passing under the base 8 of the rail. The lip rail splices 5, 6 extend between two adjacent sleepers 2.

The device also comprises, as shown in figure 3, two sealed parts 9, 10 called cover rail splices which are adapted to the protective covers 4 located on the sleepers 2.

When the insulating and sealing device is positioned on the rail, concrete is poured between the sleepers 2, so that the base 8 of the rail, covered with an insulting and sealed material, rests on a hard surface. Finally, a finishing coating, such as turf, bitumen, paving stones, paving, etc., covers the sleepers and the concrete slab, until the level located immediately underneath the upper end of the rail.

It is however necessary to provide a cavity above the insulating and sealing device, between the finishing coating and the rail, in order to allow for the setting into place of a flexible, sealed and aesthetic expansion joint, that makes it possible to follow the movements of the rail during the passage of the tram. A first disadvantage of this type of insulating and sealing device is that it does not allow for a perfect seal and insulation of the rail. This is due to the fact that the lips of the lip rail splices match up poorly under the base of the rail.

Firstly, this poor matching up of the lips makes it possible to fasten concrete in the connection space and therefore the creation of hard point that then suppresses the possibility of movement of the rail during the passing of the tram, causing a propagation of vibrations and sound waves to the road surface and to the housing in the vicinity.

Secondly, this poor matching up of the lips allows for the passing of stray currents which can cause premature corrosion of the underground water or gas pipes due to possible electrolysis phenomena. A second disadvantage of this type of device resides in the fact that it requires a substantial number of cuts on the site in order to position each rail splice, whether concerning lip rail splices or covers.

This results in installation that is substantially lengthened and therefore a cost for the device that is clearly increased. A third disadvantage of this type of device resides in the fact at the connections of the lip rail splices and cover rail splices, a staircase phenomenon is observed.

This staircase phenomenon results in that the quantity of the seal cast between the finishing coating, the rail and the top of the various rail splices is very substantial, further increasing the final cost of the installation.

Another disadvantage of this type of device resides in the fact that the cavity between the finishing coating, the rail and the top of each rail splice must be cleaned just before receiving the seal.

This results in an increase in the time for implementing the installation and therefore in its final cost.

In addition, it is also possible that the cavity is not regular, which negatively affects the aesthetics of the installation.

Document FR 2872 829 describes an insulating and sealing device according to the preamble of claim 1.

This invention therefore aims to overcome these disadvantages.

The technical problem at the base of the invention is the carrying out of an insulating and sealing device of a rail of rolling stock, of the tram type, mounted on sleepers, providing a perfect seal and insulation of the rail, and allowing for easy and quick implementation.

To this effect, the invention relates to an insulating and sealing device according to claim 1.

As such, when the lower rail splice is positioned on the rail, the tie plate and the vertical flanges of the latter perfectly surround the base of the rail. Therefore, an infiltration of concrete is therefore no longer possible on the base of the rail, no more hard points can therefore come into contact with the latter.

Consequently, during the passage of the rolling stock, the rail, surrounded at its base with a flexible material, has total free movement. As such, there is no propagation of vibrations or sound waves to the road surface and to the housing in the vicinity.

Moreover, given that the upper profile of the flanges of the lower rail splice corresponds to the upper profile of the protective covers, the lateral rail splices can cover both a lower rail splice and a protective cover. It is therefore no longer necessary to use a cover rail splice, which limits the number of different parts to carry out as well as the number of cuts on site.

In addition, by using lateral rail splices of great length, the latter can cover several adjacent lower rail splices and several adjacent protective covers. The number of cuts on the site is therefore further decreased. This results in less installation time and therefore in the cost of the device.

Due to the fact that the lower profile of each lateral rail splice is at least partially complementary to the upper profile of the protective covers and to the lower rail splice, the lateral rail splices nest perfectly on the lower rail splice and the adjacent protective covers. This results in that the rail is perfectly insulated from its outside environment.

Given that the various rail splices are made of a sealed material, the rail is perfectly insulated and also made perfectly tight from its outside environment. As such, the passing of stray currents, which can cause premature corrosion of the underground water or gas pipes, is prevented.

Advantageously, the lower rail splice comprises, on its face turned towards the rail, longitudinal notches making it possible to enlarge the opening of the housing intended to receive the base of the rail.

Therefore, it is possible, during the engagement of a lower rail splice on the rail, to enlarge the opening of the housing intended to receive the base of the rail, which facilitates the installation of the rail splice.

According to an embodiment of the invention, the lower rail splice and each lateral rail splice are made of materials with different hardnesses.

Advantageously, each lateral rail splice is made from a polyethylene foam, of high or low-density, or from another sealed material such as wood.

According to an embodiment of the invention, the lower rail splice is made from a flexible and sealed plastic foam.

Advantageously, each lateral rail splice comprises a longitudinal notch that makes it possible to render its upper portion breakable.

As such, on each lateral rail splice, breakable upper portions are obtained intended to be removed after the installation of a finishing coating.

Consequently, a clean and regular cavity, for the future setting in place of an expansion joint, is obtained. It is therefore no longer necessary to clean the cavity just before the installation of the seal.

This results in a decrease in the temps for implementing the installation and therefore in its final cost.

In any case the invention will be understood using the following description, in reference to the indexed diagrammatical drawings representing, as a non-limiting example, an embodiment of this device.

Figure 1 is a perspective view of a tram rail mounted on sleepers.

Figure 2 is a cross-section view between two sleepers of a rail of figure 1 provided with an insulating and sealing device according to prior art.

Figure 3 is a cross-section view on a sleeper of a rail of figure 1 provided with an insulating and sealing device according to prior art.

Figure 4 is a perspective view of a lower rail splice according to the invention.

Figure 5 is a perspective view of a first and second lateral rail splices according to the invention.

Figure 6 is a cross-section view between two sleepers of a rail of figure 1 provided with the device according to the invention.

Figure 7 is a cross-section view on a sleeper of a rail of figure 1 provided with the device according to the invention.

Figure 8 is a profile view of a rail of figure 1 provided with the device according to the invention.

Figure 1 shows a perspective view of a tram rail 3 mounted on sleepers 2. The rail 3 is fastened to the sleepers 2 using means for fastening, with these means for fastening being protected by protective covers 4.

When the rail 3 is fastened to the sleepers 2, the insulating and sealing device according to the invention is positioned on the rail 3.

As shown in figures 4 and 6, the device according to the invention comprises a lower rail splice 11 intended to surround the base 8 of the rail 3 and extend between two adjacent sleepers 2, with the lower rail splice 11 being made of flexible and sealed plastic foam.

The lower rail splice 11 is longitudinally extended and of a generally rectangular shape section.

The lower rail splice 11 comprises a tie plate 12 with a width equal to the width of the rail 3, extended by two vertical flanges 13, 14. The tie plate 12 and the flanges 13, 14 delimit a housing 15 with a shape complementary to that of the base 8 of the rail 3 and intended to receive the latter.

The upper profile of each vertical flange 13, 14 is delimited by two horizontal lateral surfaces 16, 17 connected together by an inclined surface 18, with the surface 17 being located lower than the surface 16.

When the lower rail splice 11 is positioned on the rail, the inclined surface 18 of each vertical flange 13, 14 is found in the extension of an inclined surface 19 of each adjacent protective cover 4 and the lateral surface 16 of each vertical flange 13, 14 is in the extension of a portion of an upper wall 20 of each adjacent protective cover 4.

As such, the vertical flanges 13, 14 have an upper profile, of which the outer portion corresponds to the upper profile of a protective cover 4 of the means for fastening the rail. Therefore, the upper profile of the lower rail splice 11 is, on each side of the rail 3, in the extension of the upper profile of each adjacent protective cover 4.

During the passing of a tram represented by a wheel 21 in figure 6, due to the fact that the base 8 of the rail 3 is surrounded by a flexible material, the rail is completely free to generate up-and-down movements, without coming into contact with hard points.

As shown in figure 5, the device according to the invention also comprises a first and second lateral rail splices 22, 23 made of a sealed material. The lateral rail splices 22, 23 can be made of polyethylene foam, of high or low density, of wood, or any other sealed material.

Each lateral rail splice 22, 23 is longitudinally extended and is intended to receive, respectively, on each side of the rail 3, at least one lower rail splice 11 and a protective cover 4. For example, as shown in figure 8, the lateral rail splice 23 covers a lower rail splice 11, two protective covers 4 and a portion of two other lower rail splices 11.

As shown in figures 6 and 7, the lower profile of each lateral rail splice 22, 23 is, respectively on each side of the rail 3, on the one hand complementary to the upper profile of the lower rail splice 11, and on the other hand complementary to the upper profile of the protective covers 4.

The profile turned towards the rail 3 of each lateral rail splice 22, 23 is complementary respectively to the profiles of the two sides of the rail 3 and the profile turned towards the outside of each lateral rail splice 22, 23 is aligned with the wall turned towards the outside of each vertical flange 13, 14.

As shown in figures 6 and 7, each lateral rail splice 22, 23 comprises, respectively, in the upper portion of its face turned towards the rail 3, a horizontal longitudinal notch 24 extending over a substantial portion of its thickness. A breakable portion 25 is as such obtained intended to be removed after the installation of a finishing coating in order to obtain and clean and regular cavity for the installation of a seal.

As shown in figure 6, each vertical flange 13, 14 comprises on its face turned towards the rail, substantially on the tie plate 12, a horizontal longitudinal notch 26 extending over a low portion of its thickness.

The tie plate 12 of the lower rail splice 11 comprises, on its face turned towards the rail, a median and vertical longitudinal notch 27 extending over a low portion of its thickness.

This number and this arrangement of the notches 26, 27 make it possible to increase the separation of the vertical flanges 13, 14 and therefore the opening of the housing 15 during the positioning of the lower rail splice 11 on the rail 3.

As shown in figure 6, when the insulating and sealing device is positioned on the rail, concrete 28 is poured between each sleeper 2 so that the tie plate 12 and the vertical flanges 13, 14 of the lower rail splice 11 rests on a hard surface. Finally, a finishing coating 29, such as turf, bitumen, paving stones, paving or concrete, etc., covers the sleepers 2 and the concrete slab 28, to a height that is substantially at the level of the upper end of the rail 3.

It goes without saying that the invention is not limited to the embodiment, described hereinabove by way of example, but that it encompasses on the contrary all of the alternative embodiments falling within the scope defined by the claims.

Claims

1. Skinnesystem for rullende materiel af sporvognstypen, omfattende: i det mindste en skinne (3); sveller (2); midler til fastgørelse af skinnen til svellerne; beskyttelseskapper (4) til fastgørelsesmidlerne; og en isolerings- og tætningsanordning; hvorved isolerings- og tætningsanordningen omfatter følgende: en elastisk og tæt nedre laske (11) med en længde, som svarer til afstanden mellem to sveller, hvilken laske omfatter en sål (12) med en bredde, der er lig med bredden af skinnen, og som er forlænget med to lodrette flanger (13, 14), og hvorved sålen og flangerne afgrænser et hus (15) med en form, som er komplementær til formen for skinnens fod (8) og bestemt til at modtage sidstnævnte og de lodrette flanger, der har en øvre profil, hvoraf det ydre område svarer til det ydre område af en beskyttelseskappe (4) for midlerne til fastgørelse af skinnerne; og en første og en anden lateral skinnelaske (22, 23), som er bestemt til, på hver side af sporet, hver for sig at overdække i det mindste en nedre laske og en beskyttelseskappe (4), hvorved det mod skinnen vendende profil på den laterale laske (22, 23) er komplementært til de to sider af skinnen (3); kendetegnet ved, at den nedre laske (11) er dannet af kunststofskum og perfekt omslutter skinnens fod (8), det nedre profil for hver lateral laske (22, 23) er, henholdsvis på hver side af skinnen, dels komplementær til det øvre profil for den nedre laske (11), dels komplementær til det øvre profil for beskyttelseskapperne (4), og ved,at hver lateral laske (22, 23) omfatter en langsgående slids (24), der gør det muligt at opdele den laterale laskes øvre afsnit (25), og ved, at rummet, der frigives ved fjernelsen af det opdelelige øvre afsnit, er bestemt til at modtage en ekspansionsbolt.A rail system for rolling stock of the tram type, comprising: at least one rail (3); sleepers (2); means for attaching the rail to the sleepers; protective caps (4) for the fasteners; and an insulating and sealing device; the insulating and sealing means comprising the following: an elastic and tight lower groove (11) having a length corresponding to the distance between two sleepers, said groove comprising a sole (12) having a width equal to the width of the rail, and which is extended by two vertical flanges (13, 14), whereby the sole and flanges define a housing (15) of a shape complementary to the shape of the foot of the rail (8) and intended to receive the latter and the vertical flanges, having an upper profile, the outer region of which corresponds to the outer region of a protective sheath (4) for the means for fastening the rails; and a first and a second lateral rail (22, 23) intended to cover, on each side of the track, at least one lower rail and a protective sheath (4), the lateral groove (22, 23) is complementary to the two sides of the rail (3); characterized in that the lower groove (11) is formed of plastic foam and perfectly encloses the foot of the rail (8), the lower profile of each lateral groove (22, 23) being, respectively, on each side of the rail, partly complementary to the upper profile for the lower latch (11), partly complementary to the upper profile of the protective sheaths (4), and in that each lateral latch (22, 23) comprises a longitudinal slot (24) allowing the upper lateral latch to be divided section (25) and knowing that the space released upon removal of the divisible upper section is intended to receive an expansion bolt.

2. System ifølge krav 1, kendetegnet ved, at den nedre skinnelaske (11) på sin mod skinnen vendende flade omfatter langsgående riller (26, 27), der gør det muligt at forstørre optageåbningen (15), som er bestemt til at modtage skinnens fod (8).System according to claim 1, characterized in that the lower rail lug (11) on its surface facing the rail comprises longitudinal grooves (26, 27) which allow the receiving opening (15) which is intended to receive the rail to be enlarged. foot (8).

3. System ifølge et hvilket som helst af kravene 1 og 2, kendetegnet ved, at den nedre skinnelaske (11) og hver lateral skinnelaske (22, 23) er fremstillet af materialer med forskellig hårdhed.System according to any one of claims 1 and 2, characterized in that the lower rail (11) and each lateral rail (22, 23) are made of materials of different hardness.

4. System ifølge et hvilket som helst af kravene 1 til 3, kendetegnet ved, at hver lateral skinnelaske (22, 23) er fremstillet af polyethylen-skum med høj eller lav densitet, eller af et andet tæt materiale, såsom træ.System according to any one of claims 1 to 3, characterized in that each lateral rail liner (22, 23) is made of high or low density polyethylene foam, or of another dense material such as wood.