LU81116A1 - FASTENING SYSTEM SUITABLE FOR FASTENING RAILWAY RAILS ON STEEL SLEEPERS - Google Patents

Description

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----------------- ™ -------- TT ..... "T —---- ~ J GR.VXD-DUCKÉ DE LUXEMBOURG

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*: · '* · <* Η Monsieur le Ministre de' Économie Nationale

Titre délivré ..... ... ............... û Service de la Propriété Industrielle.

__________ étïï LUXEMBOURG

4j ^ lui0 Demande de Brevet d’invention I. Requête ARBED S .A ................. (1)

Avenue de. la.Liberté ,. LUXEMBOURG ...................

représentée par Monsieur .. René. NEYEN ,. engineer ......................... (2) / .dépose ....... ce ... trois avril 1900 ..soixante- dix-neuf ........................... (3) à / {.............. .. heures, au Ministère de l'Economie Nationale, â Luxembourg:; '1. la présente requête pour l'obtention d’un brevet d’invention concernant:, (4) ......... For fastening ... from. Railroad tracks, on ....................

Steel welding suitable fastening system ................

déclare, en assumant la responsabilité de cette déclaration, que 1 '(es) inventeur (si est (sont): .......................... ........... 15) voir désignation de 11 inventeur 2. la délégation de pouvoir, datée de ... Luxembourg ... .. .le 2 avril 1979 3. la description en langue alleihands de Tinvemion en deux exerrplaires; 4. 2___________ planehes de dessin, en deux exemplaires; 5. la quittance des taxes versées au Bureau de l'Enregistrement à Luxembourg, le 3 avril 1979_______________________________________________ revendique pour la susdite demande de brevet la priorité d'une (des) demandées) de îq) ______ __________________________________________ déposée fs) en <7> _______________ le ______________________ ______ / ____________ ____________________________________________________________________________________________________________________________ _________________________ ______ (8) au nom de .................................... ..................................... .. ________________ _______ ... i'j; élit domicile pour lui »ésîei et. si désigné, pour son mandr.aire. à Luxembourg ...

Administration..Centrale., De ... l'ARBEDr Case postale 1802 ....... '10) - * i soHlciie la délivrance d'un brevet d'invention pour l'objet décrit et représenté dans las annexes susmentionnées . - avec ajournement de cette délivrance à ........ mois.

Le .. îRandataire ...

..ΟΓΓ ^ ^ H. rrocès-vtrbal de Dépôt

La susdite demande de brevet d'invention a été déposée au Ministère de l'Economie Nationale, Service de la Propriété Industrielle à Luxembourg, en date du: if, c - '·' 4 '4' ·· '*' ·· " Pr. Le Min: çîi * ô de î Natîor.sîe, à ........... heures * / £ '· .. .if i'> P- ^ d ~ '· λ *. Le Chef du Service de Impropriété Indes; l'elle,

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Patent application A R B E D S.A.

Avenue de la Liberté LUXEMBOURG

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Fastening system suitable for fastening railroad tracks to steel sleepers · »<

The present invention relates to a Bs fastening system suitable for fastening railroad tracks to steel sleepers, which is particularly applicable in connection with Y-shaped steel sleeper systems, both on ballastless superstructure and on ballast superstructure.

The endeavor to make both the transport of people and goods by rail more attractive by increasing the driving speed has led to the development of tractors which are able to move trains at speeds of more than 250 km / h.

I = 'The existing superstructure, in particular the sleepers of conventional construction made of wood, concrete or steel, brings with the high speeds and. the resulting loads have certain problems.

15 Significant progress is being made through the use of Y-shaped sleeper systems, which have increased lateral displacement resistance compared to conventional sleepers. In addition, the three-point support made possible by the Y-shape ensures a particularly advantageous load arrangement in the track system.

P ^ ine such Y-threshold consists essentially of two individual sleepers made of steel, which is an S-shaped curved

Have center piece and two subsequent end segments running parallel to each other, whereby 'two E.1 uze.lsch.; CIler.

25 are arranged in mirror image to each other so that two end segments are in the immediate vicinity and are connected to each other, while the opposite end segments by coupling with a profile piece and / or a next individual threshold to the same width as that; * 1 30 Y-feet are brought.

; A threshold unit (FIG. 5) thus understands bsow.

j 'two S-shaped sleeper parts - with straight ends, which are arranged in a mirror image to each other and two profiled iron segments, which are placed on the outside of the two fork ends. The 35 two curved sleeper parts and the two straight profile | iron segments preferably have the same cross-sectional profile! fil, be it I-, U- or "[f- shaped. When laying, these sleeper units alternately rotated by 130 ° in the horizontal plane - so that under each track on two fork-« - 2 - share a foot part of two adjacent Y-sleepers follows.

Schyzellen, whether made of wood, concrete or steel, understand rail fastening systems in which the support and fastening points are practically identical. Looking at a rail on which a train is moving, it is easy to see that the rail bends under the wheel load. The deflection, which propagates in waves in the rail at the speed of the train, leads to a strong tipping load on all known sleepers, precisely because of the classic fastening, which occurs when each wheel is passed. The threshold cross-section is thus rotated out of its rest position in a pendulum-like manner, the extent of the deflection depending on the width of the threshold.

The swinging of the threshold adversely affects the Glers-15 and leads to a progressive loosening and a heavy load on the superstructure.

It has been proposed to reduce this stress by increasing the threshold length A ^. Although Dios 2u leads to a significant improvement in the durability 20 of the superstructure, since the longer threshold appears more favorable with the same contact surface, this still does not represent a solution to the pendulum problem itself.

It seems that the pendulum problem is rather due to a more sensible fastening of the rail to the λ. Surge, 25 as to be solved by a constructive change of the threshold.

It is therefore an object of the invention to propose a fastening system which can withstand the pendulum loads caused by the increased driving speeds in the sleepers and at the same time can be easily rcion-'30.

Another object of the invention is to integrate the fastening system into the rail-threshold system complex in such a way that completely pre-assembled threshold systems can be delivered and fully assembled on site without the insertion of components other than the rails themselves.

Another goal is to create a fastening system which, even if the management elements are loosened, be it through operational stress, or through criminals or the mentally ill, the risk of derailment of the i - 3 -

Train reduced.

These goals are achieved by the fastening system according to the invention, which is characterized in that on two parallel, spaced-apart 5 sleeper end segments over which a rail track runs, a rail guide part is arranged on both sides and on the rail, which is located on the two sleepers engages and catches a tension clamp, which sits on the rail foot and is held in place by means of a threshold screw, the latter protruding through the rail guide part and with a screw anchor element arranged essentially between the two threshold end segments. connected is.

From the description it can be seen that the 15 rail in the fastening system according to the invention is not connected to the sleeper by means of a clamping mounting which causes the sleeper to oscillate, but rather that the rail rests on two parallel sleeper segments, resulting in a two-point mounting namely, the clamping clamp 20 me acts as the upper abutment essentially acts between the two beams acting as the lower support, the clamping clamp acting as the upper support. The rail is thus simply supported between each pair of threshold segments from above and double from below, which creates a situation clearly superior to the classic clamping fixation.

In fact, the rail is not rigidly connected to the sleepers and is therefore not able to accommodate the wave movement caused by the dynamic load. -. 30 to be transferred to the threshold so that it swings.

According to the invention, the sleepers preferably consist of steel beams with an I-shaped cross section, the lower flanges of which have a greater width than the upper ones, all of the flanges having a bevel directed towards the inside of the beam.

Furthermore, the mutually opposite edges of the upper flanges below the rail base have a rectangular milling.

The rail guide part i - 4 - plays an important role. This has a dovetail-shaped underside with which it snaps into the bevelled part of the upper support flanges.

The bevels and millings have the following 5 purposes. The former allow the rail guide part to be fastened by snapping the dovetail-shaped underside into place, which remains even when the tightening screw is loosened. As already explained, the millings are located on the flange edges, below the rail foot.

10 The rail guide part is inserted here and brought into position by pushing it horizontally into the slanted part of the flanges. It is therefore not possible to remove the rail guide part from the threshold system after removing the tightening screw if the rail has not been raised beforehand. For these reasons, criminals or the mentally ill encounter considerable difficulties when trying to derail a train by unobtrusively loosening the rail fastening.

The two steel beam end segments are also connected 20 via their upper and lower flanges by means of welded bolts which enclose the rail guide parts on both sides and on the rail axis. Accordingly, a horizontal pulling out of the rail guide parts is impossible even after removing the tightening screws.

25 Furthermore, the rail guide part has two grooves on its upper surface, which run in the direction of the rail axis on either side of the bore. The purpose of this measure is explained in more detail in the description of the drawings and the assembly.

According to the invention, a plastic base plate is located below the rail, the lower surface of which lies in a plane parallel to that of the support flange, while the upper surface lies in a plane which is opposite. the horizontal is inclined so that it runs perpendicular to the longitudinal plane of the rail. The geometry of this base plate thus determines the angle of inclination of the rail sitting on it. Furthermore, through the choice of their thickness, the entire system can be adapted to the particular geometric conditions, which is, for example, in transition arches by Mutzen.

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An insulating layer made of plastic is provided between the rail guide part, the latch and the upper support flange.

This plastic intermediate layer serves both to avoid contact between steel and steel, as well as for vibration and / or noise insulation, or for electrical insulation, since electrical control impulses are transmitted via the rails.

As described, a tie screw is used to tighten the fastening system according to the invention, which can be of a conventional type and which is screwed into the screw anchor element.

A preferred embodiment of the fastening system according to the invention provides that the screw-anchor element consists of a solid block which is arranged within the hollow space delimited by the webs of the beams and the mutually opposite beam flanges and a K \ has dovetail-shaped underside. Here, the solid block expediently consists of steel fiber concrete, in which the sleeper screw is screwed in isolated.

; According to the invention, the concrete block understands two flat steel springs which are supported against the lower connecting bolts and thereby press the block against the upper flanges. The springs are surrounded by a 25 plastic cover for corrosion protection. The spring, which is located outwards from the center of the sweat, grasps a hook-shaped end which serves to center and lock the block in an axis perpendicular to the rail. The centering of the block in the rail axis takes place through the dovetail-shaped lower side, 30 th of the block, which is clamped between the flanges.

Further advantages and features will become apparent from the description of the drawings, in which FIG. 1 shows a section through the complex rail-threshold-fastening system in the rail profile plane, while Flg. Figure 2 illustrates a top view 35 of the rail-threshold mounting system complex;

Fiq. 3 shows a section according to AA and FIG. 4 shows a section according to BB through the arrangement shown in FIGS. 1 and 2.

Fig. 5 shows a schematic representation of a Y-threshold unit and the rail lines running above it.

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The threshold unit shown in FIG. 5 consists of two S-shaped curved I-beams (II and 12) and two straight I-beam segments (S1 and S2), which have approximately the same length as the straight sleeper end parts.

5 The three dashed circles delimit three regions which are identical to one another and which are enlarged in FIGS. 1, 2, 3 and 4 and shown in detail.

In Fig. 1 you can see the flanges of a front I-beam, which, as mentioned above, can either be 10 the straight end of one of the beams (II or 12), or a straight beam segment (S1 or S2) and behind which there is a second carrier, not shown.

Both carriers (II and 12) or (II and S1) or (12 and S2) are shown in section in FIGS. 3 and 4.

15 The upper and lower flanges of the two beams are connected to each other by welded bolts (ö) so that a distance H \ remains between the flanges of both beams.

The rail guide part (2) has the groove (2a and .20 2b), as well as the bore (2c).

You can also see the inclined washer (9).

As can be seen from Figs. 3 and 4, the fact that separate supports for the rail and the rail guide part are provided makes it possible to adapt the system to all geometrical conditions, e.g. by varying the thickness of the washers (9). in transition floors, easy to adapt.

1 shows the grooves (2a and 2b) extending in the direction of the rail axis; In the assembled state, the tension clamp (4) lies on the one hand in the groove (2b) * '' and on the other hand on the foot of the rail (0), while in the pre-assembly stage, before the rails are placed, the tension clamp (4) lies on the one hand between the groove (2b) and the bolt (8) and on the other hand in the groove (2a).

35 The threshold screw (5) acts on the tension clamp (4) via the washer (14), protrudes through the hole (2c) and is screwed into the dowel (13), which is located in the steel fiber concrete block (10). The latter also understands the feathers (15).

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3 and 4, the bevels (30) and the millings (31) on the carrier flanges, the extent and the positions of the millings are illustrated in FIG. 2. It is hereby clear how the rail 5 guide part (2) is inserted into the milled parts and after lateral displacement with its dovetail-shaped underside (2d) snaps into the bevelled parts.

In Fig. 3, the insulating layer (3) is also shown 10, which is located between the bolt (8) and the rail guide part (2), and between the latter and the carrier flange.

For a better understanding of the structure of the fastening system according to the invention and the resulting advantages, pre-assembly and final assembly of the rail-15 tie fastening system complex are briefly explained:

Two cut and milled carrier end pieces are connected using four connecting bolts (8). A total of i therefore requires twelve bars (8) per Y-threshold unit.

At the same time, three steel-20 fiber concrete blocks (6) are provided with two dowels (13) per threshold unit and attached between two beams.

Then a plastic base plate (9) inclined (per threshold unit 6) is placed on each carrier.

25 About these two rail guide parts (2) with their insulation parts (3) are brought into position.

The tension clamps (4) are inserted so that each lies in a groove (2a) and the sleeper screws (5) with their washers (14) are screwed in. One needs-,. Accordingly, there are six rail guide parts (2), six tension clamps (4) and six sleeper screws per sleeper unit.

- - The Y threshold is now ready for transport.

The final assembly only involves laying the rails themselves. Then the sleeper screws (5) are loosened and the tension clamps are laid on the one hand in the groove (2b) and - on the other hand on the rail foot and the sleeper screws (5) are finally tightened.

: The connecting bolts (8) are workpieces that Roll out of steel, while the rail guide parts - 8 · - can be made of nodular cast iron. The small clamps (4) are made of spring steel.

The insulation layers (3) are cast from a suitable plastic. Plastic is also used to produce the screw anchors 5 (13).

In conclusion, it should be pointed out that this is in accordance with the invention. Fastening system, which is each arranged between one of the three pairs of beams of a Y-threshold system, each represents a base. Choosing I-beam 10 with 125 mm wide lower flanges, with a distance of 60 mm between the lower flanges of each pair of beams, and a distance of 600 mm between the webs of the inner beams of two adjacent pairs of beams, this results in a support point -Distance of 785 mm.

15 This corresponds to 2548 bases per kilometer for both lines (2x1000 / 0.785), which corresponds to a number of 845 required Y-thresholds per kilometer (2548/3).

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If you compare this result with the number of classic straight sleepers required, you get the same threshold distance, which in this case corresponds to the base point distance of 1666 sleepers per kilometer (2x1000 / o.600x2).

Claims (11)

1. For fastening railroad tracks to steel sleepers, in particular to Y-shaped steel sleeper systems, suitable fastening system, characterized in that 5 rail guide parts are arranged on two parallel and at a distance from each other threshold end segments over which a rail track runs, on both sides and on the rail side , which rests on the two sleepers in a snap-in manner and which understands a tension clamp that sits on the rail base and is held in place by means of a sleeper screw, the latter protruding through the rail guide part and with a screw anchor element arranged essentially between the two sleeper end segments connected is. 2. Fastening system according to claim 1, characterized in that the sleepers consist of steel beams which are I-shaped in cross section, - whose lower flanges have a greater width than the upper ones, all flanges having a: (beveled towards the inside of the beam. 3. Fastening system according to claims 1-2, da-20 characterized in that the mutually opposite edges of the upper flanges below the rail foot have a rectangular milling. 4. Fastening system according to claims 1-3, characterized in that the rail guide part has a substantially dovetail-shaped underside with which it snaps into the bevelled part of the upper support flanges. 5. Eefestigungssystem according to claims 1-4, characterized in that the rail guide part, a drilling, r 1 30 tion, and on its upper surface has two grooves that run in the direction of the axis on both sides and beyond the bore - 1. 6. fastening system according to claims 1-3, characterized in that the two steel beam end segments 35 are connected via their upper and lower flanges by means of two welded bolts which enclose the rail guide parts on both sides of the rail axis. 7. Fastening system according to claims 1-6, characterized in that below the rail is a - 10 - Unterle'gplatte made of plastic, the 'lower surface is in a plane parallel to that of the support flange, while the upper surface in one plane lies which is inclined with respect to the horizontal so that it runs perpendicular to the longitudinal section plane of the rail. 8. Fastening system according to claims 1-7, characterized in that there is a one-piece insulating layer made of plastic between the rail guide part, the bolt and the upper support flange. x ’10 9) Fastening system according to claims 1-2, characterized in that the screw anchor element consists of a solid block that understands a dovetail-shaped underside with which it is clamped between the carrier flanges and in which a plastic dowel is stored 15. 10. Fastening system according to claims 1-2, and 9, characterized in (that the massive block consists of a "& steel fiber concrete. 11. Fastening system according to claims 1-2 and 20 9 · -10, characterized in that the Eetonblock comprehends two flat steel springs, which are supported against the lower connecting bolt, the springs having hook-shaped ends. 1 "