EP1136622B1 - Railway track covering - Google Patents

Description

The invention relates to a track covering, which is formed from between the two rails of a track inserted roofing plates and optionally also externally to these rails subsequently laid covering plates, which roofing plates consist of a composite material and are provided at least on a rail facing edge with support tabs , which engage with the insertion of elastic inserts in the lateral recess of the relevant rail, wherein the composite material is formed of a plurality of mutually blended components.

Track coverings of the aforementioned type are known in various embodiments and are usually used for the formation of railroad level intersections or similar lying at rail level traffic areas in the area of fabrication or storage facilities or the attenuation of the resulting noise when driving on track systems, which occasionally also a walkability such sound-absorbing Track coverings is considered. Such a track covering is described in DE 29 32 946 A. In the known track coverings of the aforementioned type, the production of the plates required for covering and also their installation on the track usually associated with an undesirably large effort, often resulting in difficulties that, due to the weight of the plates and by special manipulation steps, which Installation and removal of the plates must be made to use special lifting equipment and other devices, which can lead to considerable difficulties in confined spaces, such as those prevailing in tunnels. Such problems also exist in a track covering known from US-A-1275321, in which roofing plates are provided which have approximately a thickness corresponding to the rail height and are supported on the sleepers. The edge zones of these roofing plates running transversely to the longitudinal direction of the track are bent downwards and each of these edge zones projects into a space between two successive sleepers. The running in track longitudinal edges of the flashing plates extend at a distance from the rails, wherein in the spaces thus formed between the rails and the flashing plates channel-like profiles are inserted, which as To serve mud flaps.

It is an object of the present invention to provide a track covering of the type mentioned, in which the roofing plates are simple and easy to manufacture with little effort, with a low weight of the plates should be achievable and so the installation and removal of these plates simple hoists and if necessary even without lifting gear by hand can be made.

The track covering invention mentioned above is characterized in that at least the inserted between the two rails of the track covering plates have the shape of a transverse to the rail longitudinal direction U-profile, which consists of a substantially flat top wall and at its transversely to the rail longitudinal direction transverse edges arranged, projecting from the top wall downwardly projecting flange ribs, wherein the engaging in at least one of the rails support tabs are formed only by the Flanschrippenenden, which adjacent to that longitudinal edge of the top wall, which extends in the longitudinal direction of the respective rail. Through this training, the above-mentioned objective can be well met. The tracks forming the track plates can be produced by their simple form with relatively little effort, with a good carrying capacity of these plates can be achieved even at relatively low weight. It can be a good, sufficient for intense walking load capacity is obtained with a plate weight of less than 50 kg. Accordingly, such roofing plates are, if necessary, to be installed and removed by hand without the need for larger lifting devices or the like. The support lugs of the roofing plates, which engage in the side rail located adjacent the rail of the respective rail, usually an elastic profile between the support tabs and the rail in question is inserted, are relatively narrow seen in the rail longitudinal direction, and it is characterized in the installation and the Removal of the track covering forming roofing plates required manipulation easier. In addition, resulting from the intended shape of the track covering forming roofing plates relatively easily manageable static conditions, and it can thus be achieved in a simple way an optimized dimensioning. With regard to the composite material from which the roofing plates are formed, a wide range of possibilities is available. For at least one component are natural minerals in crushed or ground state as well as finely divided, porous lightweight materials, such as plastic granules, granular or fired and calcined Tonerdeteilchen, granular slag particles and similar particles of natural or artificially produced base materials, including mixtures of various Particles, as mentioned above, can be used. In particular, cement and also plastic binders are suitable as binding components, whereby it is also possible to use binder mixtures in this regard. It is cheap in most cases when the composite material from which the Covering plates are formed, includes a reinforcement, which may consist for example of steel or other metals, plastic threads, glass fiber strands, or fiber materials, wherein the fiber materials both natural and synthetic are to be considered and both admixtures of short fibers to the component mixture and embedding of longer strands formed from fiber material come into question. The reinforcement can also take the form of prefabricated planar bodies, such as the form of meshes, nets or nonwovens. If the highest possible sound attenuation is desired, it is favorable if a component of the composite material is a porous lightweight material as mentioned above or at least predominantly consists of such a material. Furthermore, it is advantageous to form the upwardly directed surface of the covering plates in a sound-absorbing manner, for example, to be provided with suitable ribs or hollow recesses.

A preferred embodiment of the track covering according to the invention is characterized in that at least one longitudinal edge of the top wall, a lip is arranged whose thickness is less than the thickness of the top wall and which extends from one flange rib to the other flange rib and below the on the inside of the adjacent rail kept lane groove rests running on an inserted into the adjacent lateral recess of the adjacent rail elastic shim. It can be achieved by this measure in a simple manner, a good completion of the space covered by the roofing plates against unwanted ingress of foreign material, which also appears important for safety reasons, since combustible foreign material, such. Dust accumulations, is at risk of ignition and is expected in the railway area with many sources of ignition, for example. carelessly discarded cigarettes, as well as sparks and arcing in electric traction can cause inflammation. The aforementioned lip gives by its compared with the top wall smaller thickness in a simple way the ability to provide between the given to be given depth of the flange groove and also to be regarded as given maximum height of rail fastening components and the like. A permanent separation and sealing.

It is both for the manipulation of the installation of the track covering plates as well as for the compensation of tolerances on the individual elements of a track to be covered is advantageous if it is provided that the lip is made of a flexible material.

For laying between the two rails of a track are usually roofing plates in question, which are provided at its two longitudinal edges with support tabs, in such a way the roofing plates are held on both sides by engagement in the lateral recesses of the rails. In certain cases, such as the presence of additional guide rails on the inside of the rail, it may be useful to provide roofing plates to be inserted between the two rails of a track at only one longitudinal edge with support tabs for engagement with a side rail recess and, accordingly, only one Longitudinal edge to support a rail and such a covering plate in the region of its other longitudinal edge on on their components of the track, such as on a base plate supporting the rails. You can also provide your own foundations for the formed without support lugs longitudinal edge of roofing plates. Roofing plates, which are provided with support tabs only at one longitudinal edge, are also particularly suitable for roofing the area adjoining the rails of a track. For flashing panels which are provided with support tabs only at one longitudinal edge and as mentioned above on other track components, e.g. To rest on base plates, or other foundations, it is in terms of usually located at a slightly higher level than such support points rails advantageous if the flange ribs of the covering plates at a distance from the provided with support lugs longitudinal edge to the other longitudinal edge have a greater height as at the longitudinal edge adjacent to the support lugs. It is further advantageous if it is provided that the flange ribs have in the greater height portion having on its underside elastic supports, and in addition to the fact that the elastic supports are height adjustable.

The invention will now be further described by way of example with reference to the accompanying drawings in which such examples are schematically illustrated.

• Fig.1 ein Gleis, welches mit einer Ausführungsform einer erfindungsgemäß ausgebildeten Gleiseindeckung versehen ist, in Draufsicht;
• Fig.2 das in Fig.1 dargestellte Gleis in einem vertikalschnitt gemäß der Linie II-II in Fig.1 in vergrößertem Maßstab;
• Fig.3 eine Eindeckungsplatte, wie sie beim Gleis nach den Fig.1 und 2 vorgesehen ist, im Schnitt gemäß der Linie III-III von Fig.2;
• Fig.4 eine Variante einer derartigen Eindeckungsplatte in einem gemäß Fig.2 geführten Schnitt;
• Fig.5 eine andere Variante einer solchen Eindeckungsplatte in einem gemäß Fig.2 geführten Schnitt;
• Fig.6 eine andere Ausführungsform eines Gleises mit einer erfindungsgemäß ausgebildeten Gleiseindeckung in einem analog Fig.2 geführten Vertikalschnitt; und
• Fig.7 eine Eindeckungsplatte, wie sie bei der Ausführungsform nach Fig.6 vorgesehen ist, in einer Ansicht.

In the drawing show:

• A track, which with an embodiment of a According to the invention designed track covering is provided, in plan view;
• 2 shows the track shown in Figure 1 in a vertical section along the line II-II in Figure 1 on an enlarged scale.
• 3 shows a roofing plate, as provided in the track according to Figures 1 and 2, in section along the line III-III of Figure 2;
• FIG. 4 shows a variant of such a covering plate in a section according to FIG. 2; FIG.
• 5 shows another variant of such a covering plate in a guided in accordance with Figure 2 section.
• FIG. 6 shows another embodiment of a track with a track covering designed according to the invention in a vertical section guided analogously to FIG. and
• 7 a roofing plate, as provided in the embodiment of Figure 6, in a view.

The illustrated in Figures 1 and 2 embodiment of a track 1 is provided with a track covering, which is inserted from between the two rails 2 of the track inserted roofing plates 3 and from the outside of the rails 2 then laid roofing plates 4. The roofing plates 3, 4 consist of a composite material which is formed from a plurality of components mixed together. One component is a material consisting of a large number of particles, and a further component is a binder, with which the particles are combined to form a stable body. The particles can consist of various natural or artificially produced base materials, for example of natural minerals, of porous lightweight materials, such as plastic granules, of alumina or of slag. Suitable binders are, in particular, cement or plastic binders and also binder mixtures. The laid between the two rails 2 covering plates 3 are provided at both of the rails 2 facing edges with support tabs 5, which engage with insertion of elastic inserts 6, which are expediently in the form of elastomer profiles, engage in the lateral recesses 7 of the rails 2; these recesses are sometimes called tab chambers. The covering plates 4, which are subsequently laid outside the rails, are only at one edge, namely the edge facing the relevant rail 2, provided with such support lugs 5, which also intervene with insertion of elastic inserts 6 in lateral recesses 7 of the respective rails 2.

As can be seen from FIGS. 2 and 3, the covering plates 3, 4 are designed in the form of a U-profile running transversely to the longitudinal direction 8 of the rail, which is formed by a substantially flat cover wall 9 and by flange ribs 11, 11 ', which adjoin the transversely extending to the rail longitudinal direction 8 transverse edges 10 of the top wall 9 are arranged and projecting from this top wall 9 down. The engaging in the rails 2 support tabs 5 are formed only by the Flanschrippenenden 12, which adjoin the extending in the rail longitudinal direction 8 longitudinal edges 13, 13 ', 13 "of the top wall 9.

It is convenient to arrange reinforcements in the covering plates 3, 4; in the drawing, a reinforcement 14 in the top wall 9 and a reinforcement 15 in the flange ribs 11, 11 'is indicated. The reinforcement 14 may e.g. be formed in the form of a grid or a mat, which may optionally extend under bending in the flange ribs. The reinforcements 15 may be formed, for example, in the form of rods or fiber strands.

The rails 2 are held with rail fastening elements 16 on a base 17, which may be realized in various forms, for example in the form of sleepers, which are laid on a ballast bed, or in the form of a continuous base plate. Between the longitudinal edges 13, 13 'of the top wall 9 of the covering plates 3 and the inside of the rails 2, a distance corresponding to a flange groove 18 is provided. It results here, as shown in Figure 2 on the left, between the inside of the rail 2, the support lugs 5 and the longitudinal edge 13 of the top wall 9 an opening which, if desired, if it should be avoided that in the course of time foreign material in the penetrates under the top wall 9 lying space, can be closed with a suitable cover. On the right in Figure 2 is shown an embodiment in which such a conclusion is formed by a lip 19 which is arranged at the longitudinal edge 13 'of the top wall 9. The thickness of this lip 19, which extends from one flank rib 11 to the other flank rib 11 'of the flattening plates 3, is less than the thickness of the top wall 9. It extends this lip 19 below that on the inside of the adjacent Rail 2 freed flange flange 18, and it is this lip 19 at the inserted into the adjacent lateral recess 7 of the rail 2 elastic shim 6 on. Due to the small thickness of the lip 19, as mentioned, it is easily accommodated between rail fastening elements 16 and the flange flange 18 to be kept free. It is advantageous if the lip 19 is made of a resiliently flexible material.

In the embodiment shown on the left in FIG. 2, such roofing plates 3 can easily be grasped encompassing the relevant longitudinal edge 13. In the case of the provision of lips 19, the provision of recessed grips or the like. That facilitate capturing the roofing plates.

The upper side 20 of the covering plates 3, 4 can, as shown in FIGS. 2 and 3, be substantially smooth. However, it is possible to form the upper side modified according to special purposes and, for example, as shown in Fig. 4, to form grooves 21 into which equalizing conductors, as provided in electrical paths, can be inserted. Also, one can, as shown in Figure 5, the top 20 of roofing plates 3, 4 provided with a sound-absorbing structure 22.

In the embodiment of a track shown in section in Figure 6, a simple rail 2 is provided on the left side, while on the right side on the inside of the rail 2 in addition a flange rims conductive strip 23 is arranged. The laid between the rails 2 covering plates 3 have only on the left side, at the longitudinal edge 13, supporting lugs 5 and end at the right side dull. The covering plates 3 are mounted in the region of their right side on the base 17 and supported on this or on the strip 23 against lateral displacement. The flange ribs 11, 11 'of the covering plates 3 are formed in a portion 24 which is at a distance from the longitudinal edge 13 and the longitudinal edge 13', with greater ßerer height than at the support lugs 5 adjacent longitudinal edge 13. At the bottom of the Flange ribs 11, 11 'are arranged in the section 24 elastic supports 25, which are preferably adjustable in height, for example by means of screws, are formed. As shown in FIG. 7, the flashing plates 3 of the embodiment shown in FIG. 6 are provided with lips 19 at the longitudinal edge 13 as discussed above and have gripping recesses 26 around it Capture this roofing plates easier.

Claims (8)

1. Track covering formed by cover slabs (3) inserted between the two rails (2) of a track (1) and, optionally, also by cover slabs (4) laid to adjoin these rails outwardly, which cover slabs (3, 4) consist of a composite material and are provided with supporting lugs (5) at least on one rim (13, 13', 13") facing a rail (2), which supporting lugs engage in the lateral recess (7) of the respective rail (2) with elastic shims (6) interposed, the composite material being formed of several components mixed with each other, characterised in that at least the cover slabs (3) inserted between the two rails (2) of the track (1) have the shape of a U-section extending transversely to the rail longitudinal direction (8), which U-section is formed by a substantially level top wall (9) and flange ribs (11, 11') projecting downwardly from the top wall (9) and arranged on transverse rims (10) of the top wall which extend transversely to the rail longitudinal direction (8), wherein the supporting lugs (5) engaging in at least one of the rails (2) are merely formed by flange rib ends (12) adjacent that longitudinal rim (13, 13', 13") of the top wall (9) which extends in longitudinal direction (8) of the respective rail (2).
2. A track covering according to claim 1, characterised in that a lip (19) is arranged on at least one longitudinal rim (13, 13') of the top wall (9), which rim extends in parallel with the rail longitudinal direction, said lip having a thickness slighter than the thickness of the top wall (9) and extending from the one flange rib (11) to the other flange rib (11') and, below the flange groove (18) kept clear on the inner side of the adjacent rail (2), extending as far as to an elastic shim (6) inserted in the neighbouring lateral recess (7) of the adjacent rail and abutting on this elastic shim (6).
3. A track covering according to claim 2, characterised in that the lip (19) is made of resilient, flexible material.
4. A track covering according to any one of claims 1 to 3, characterised in that the track covering comprises cover slabs (3, 4) provided with supporting lugs (5) merely on one longitudinal rim (13, 13', 13").
5. A track covering according to any one of claims 1 to 3, characterised in that the track covering comprises cover slabs (3) provided on merely one longitudinal rim (13) with supporting lugs (5), the flange ribs (11, 11') having a larger height at a site spaced from this longitudinal rim (13), towards the other longitudinal rim (13'), than on the longitudinal rim (13) neighbouring the supporting lugs (5).
6. A track covering according to claim 5, characterised in that in the portion (24) having a larger height, the flange ribs (11, 11') comprise elastic supporting means (25) on their lower sides.
7. A track covering according to claim 6, characterised in that the elastic supporting means (25) are adjustable in height.
8. A track covering according to any one of claims 1 to 7, characterised in that the composite material contains reinforcing means (14, 15).

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