EA036240B1 - Device for fixing a rail for rail vehicles - Google Patents

Abstract

The invention relates to a device for fixing a rail (2) for rail vehicles, comprising a base plate (1) designed in particular as a molded part made of metal, which is detachably fixed to a monolithic track (3), in particular of concrete, wherein the rail (2) is fixed on the base plate (1) by rail holding members (1a), wherein the base plate (1) for its fixation is subjected to a force from above by means of a holding member (6) adjoining the track (3) separate from the base plate (1).

Description

The invention relates to a device for securing a rail for rail vehicles.

WO 2007/082553 A1 describes a rail fastening system in which screws pass through the rail backing plate in each case on the sides of the laid rail. The screws are fixed in the concrete route and in each case press the spring clips against the rail foot, so that both the rail and the backing plate are pressed down with the screws. In addition, in order to absorb the forces acting laterally or in the transverse direction, fastening brackets are provided, which support the backing plate in a positive manner only in the transverse direction. On their side, the brackets are attracted to the travel path by other screws.

DE 10139198 A1 describes a rail backing plate through which screws pass laterally, wherein spring clips are provided for fixing the rail on at least one of the screws. In addition, the backing plate has projections that engage positively with corresponding grooves in the path in order to achieve sufficient lateral force abutment.

An object of the invention is to provide a rail fastening device for rail vehicles, which enables simple fastening along the route.

For the device indicated at the beginning, this problem is solved according to the invention by means of the distinctive features of claim 1 of the claims. By having a fastening part adjacent separately from the backing plate, this fastening part can be optimized with respect to its fastening function, so that the backing plate itself remains free in relation to its shape.

In particular, anchoring elements can be saved in this way. In general, the device according to the invention may preferably be provided with no more than two anchoring elements in the transverse direction, which are included in the path.

The backing plate is preferably formed as a shaped piece. It can be made of metal, such as steel, or another material, such as plastic. The monolithic route is preferably, but not necessarily, concrete. We can talk, in particular, about a continuous track, which is used in modern designs of ballastless superstructure.

In one preferred embodiment of the invention, the fastening part has a frame element that has a frictionally engaging support surface adjacent to the travel path. This bearing surface can be optimally adapted in size and structure to the required fastening forces, so that there is a lot of design freedom for the shim.

In this case, the frame element is then preferably pressed against the track by means of an anchor element extending through the frame element. According to the invention, an anchoring element is generally understood to mean any tensile-loaded fastening means that enters the track and connects the backing plate to the track. Examples of preferred anchoring elements according to the invention are threaded pins which are positively secured in the path of travel, embedded supports of various designs and screws. When screws are used as anchoring elements, they can, for example, be fixed in the hole in the route with dowels.

The anchoring element, for example, exerts direct contact forces on the bearing surface by means of a threaded nut, so that very high forces can be achieved due to the frictional engagement between the bearing surface and the track surface.

In this case, preferably, the elastic clip can be pressed against the frame element, the elastic clip engaging (from above) with a positive fit on the backing plate and elastically pressing it in the direction of the travel path. This allows for the preferred vertical movement of the backing plate with appropriate vibrations and vibrations. In this case, the clamping force of the backing plate can be set by calculating the parameters of the elastic clamping, and the clamping of the frame element relative to the travel path is not limited as a result.

In order to ensure the position of the rail in a plane parallel to the track, it is provided that the frame element supports the backing plate in a form-fitting manner, both in the longitudinal direction parallel to the rail and in the transverse direction perpendicular to it and parallel to the track. For this, the frame element, for example in the transverse direction, can abut against the backing plate and be gripped by the protruding pins of the backing plate.

In general, preferably, the attachment portion may include an angle defining plate for supporting the resilient clip. This allows flexible design with regard to the height adjustment of the fastener. In this case, for the sake of simple implementation, a distance plate for vertical adjustment of the height of the fastening part can be arranged under the angle defining plate.

In order to adapt the shim plate to the respective installation position and to compensate for the tolerances that are often large with a monolithic path, it is preferably provided that a spacer plate is arranged under the shim plate for

- 1 036240 vertical height adjustment of the backing plate.

It can further be provided that at least one intermediate plate made of a low-stiffness material is arranged under the backing plate for damping purposes. This allows for simple and effective soundproofing. In particular, the construction according to the invention allows that the intermediate plate is not subject to the high pressing forces of the anchor element. A low-stiffness material is in this sense, for example, plastic with a static stiffness of less than 200 kN / mm.

According to the advantages described above, the device according to the invention is most preferably designed in such a way that the anchoring element installed in the route does not pass through the backing plate. This makes it possible to limit the assembly forces acting from above on the backing plate.

Most preferably, the track has a flat surface underneath the device without form-locking structures. This means significant savings and simplifications in the construction of the route and is made possible by the special properties of the device according to the invention.

Further advantages and features result from the embodiment described in the following as well as from the dependent claims.

In the following, a preferred embodiment of the invention is described and explained in more detail using the accompanying drawings.

In the drawings, FIG. 1 is a sectional view of a device according to the invention;

fig. 2 is an exploded perspective view of the device of FIG. 1 and FIG. 3 is an enlarged perspective view of the device of FIG. one.

The device according to the invention comprises a rail backing plate or a backing plate 1 for fastening a rail 2 laid thereon. The backing plate 1 is made in the form of a shaped piece made of steel.

According to the invention, the rail 2 extends in the illustration of FIG. 1 in the longitudinal direction, which is perpendicular to the plane of the drawing. The transverse direction runs horizontally in the plane of FIG. 1. The gravity of the rail vehicle acts in the vertical direction, again perpendicular to it, with lateral forces also occurring in the transverse direction, for example due to movement towards curves.

In this case, the rail 2 has a regular profile and is located in the area of the turnout, so that, in addition, another rail 2 'which is movable in the transverse direction is adjacent to the backing plate 1.

In principle, the device according to the invention can also be used outside a turnout in the area of a normal track. In this way, the exact shape of the shim 1 can be adapted to the respective application.

The backing plate 1 is located on the track 3 made of concrete. The track has in this case a smooth surface without grooves or protrusions, which in most cases are provided in the prior art to absorb lateral forces. This allows for an economical and simple manufacture of the track 3.

Rail 2 is fixed to the backing plate 1 by rail fasteners 1a. In this case, the rail base is clamped on the backing plate 1 using conventional elastic clamps or clamping clamps (not shown). The screws used, if necessary, for fixing the rail 2 on the backing plate 1 do not pass through the backing plate, respectively, they are not fixed in the path 3.

Between the backing plate 1 and the path, there is an intermediate plate 4 made of low-stiffness material, in this case of plastic with a static stiffness of <200 kN / mm. This intermediate plate 4 serves for impulse and acoustic decoupling between rail 2 and track 3.

In addition, under the intermediate plate 4 there is also an optional spacer plate 5 made of metal, in order to compensate for the possible tolerances of the travel height. Alternatively, the spacer plate 5 can also be made of plastic.

The backing plate 1 is fixed in position by two fastening parts 6. On each side, in each case, one of the fastening parts 6 is positioned in the transverse direction butt-to-side in front of the end face of the backing plate 1. Thus, the backing plate is held positively in the lateral direction.

In addition, the forward-protruding pins 1b of the backing plate 1 encircle the fastening parts, so that positive locking in the longitudinal direction is also carried out.

In the direction of height, the backing plate is held positively by elastic clamps 7 of the fastening parts 6, which, moving away from the fastening parts 6, cover the ends of the backing plate 1, and is pressed against the path 3 by a given elastic clamps.

- 2 036240

The fastening parts include in each case a lower frame element 8, the lower side of which is formed as a specific support surface 8a, with which the frame element bears against the surface of the track 3.

The frame element 8 has a central through hole 8b through which an anchor element 9 of the fastening part 6, which is fixed in the usual way, passes. The anchoring element 9 is in this case in the form of a threaded pin, secured in a form-fitting manner along the route. Alternatively, the anchoring element 9 can also be made, for example, in the form of a screw, which is fixed along the route by means of a dowel.

Above the frame element 8 is located an angle-setting plate 10 of the fastening part 6, through which the anchor element 9 also passes, and which serves to set a certain direction and support the elastic clamp 7. The elastic clamp 7 is made similar to the elastic clamps usually used in the construction of a rail track, and the exact shape, material thickness and coefficient of elasticity can be adapted depending on the design of the backing plate. Elastic clamps can be used most expediently and conform to a generally accepted standard.

An optional distance plate 11 is located between the frame element 8 and the angle defining plate 10, which, like the function of the distance plate 5, makes it possible to fine-tune the height to compensate for tolerances. As a rule, the spacer plate 11 can correspond in its thickness to the spacer plate 5, if provided.

A nut and washers 12 are provided on the anchor element 9, with which the elastic clip 7 is clamped. In this case, the elastic clamp 7 is clamped against the stop against the angle setting plate 10. As a result, the pressing force of the frame element 8 against the path 3 can be selected arbitrarily by the tightening torque of the nut 12, without further increasing the pressing force of the shim.

Accordingly, the backing plate can be deflected in the direction of the height if forces are achieved by means of vibrations or impact pulses that exceed the elastic force of the elastic clips 7.

The lateral forces occurring in the transverse direction are sufficiently absorbed by the fastening parts 6 or by the frame elements 8. For this, the size of the bearing surface 8a, the coefficient of friction of the bearing surface 8a with the path and the tightening torque of the nut 12 are calculated accordingly.

In this case, exactly two anchoring elements 9 are used to fix the backing plate on the route 3. In particular, in the transverse direction only two anchoring elements 9 are used, namely one at each end of the backing plate 1. Depending on the longitudinal expansion of the backing plate, several anchoring elements 9 can also be provided in the longitudinal direction one after the other.

List of reference positions

- backing plate a - rail fastening part b - cleats

- rail '- rail (the wit of the turnout switch)

- route of travel

- intermediate plate

- distance plate

- fixing part

- elastic clamp

- frame element

8a - support surface of the frame element 8b through hole of the frame element

- anchor element

- angle setting plate

- distance plate

- nut, washers

Claims (10)

CLAIM 1. A device for fastening a rail (2) for rail vehicles, including a backing plate (1), which is detachably fixed on a monolithic track (3), and the rail (2) is fixed on the backing plate (1) by rail fastening parts ( 1a), characterized in that the backing plate (1) is loaded from above by force for its fixation by means of the fastening part (6) adjacent to the path (3) separately from the backing plate (1), and the fastening part (6) has a frame element ( 8), which has an abutting surface (8a) adjacent to the track (3) of the following with frictional locking. 2. Device according to claim 1, characterized in that the frame element (8) is pressed against the path (3) by means of an anchor element (9) passing through the frame element (8). 3. Device according to claim 1 or 2, characterized in that the elastic clamp (7) is pressed against the frame element (8), wherein the elastic clamp (7) positively engages the backing plate (1) and elastically presses it in the direction of the path ( 3) following. 4. Device according to any one of claims 1 to 3, characterized in that the frame element (8) supports the backing plate (1) with a positive fit both in the longitudinal direction parallel to the rail (2) and in the perpendicular to it and parallel to paths in the transverse direction. 5. A device according to any one of claims 1 to 4, characterized in that the fastening part (6) includes an angle defining plate (10) for supporting the elastic clip (7). 6. A device according to claim 5, characterized in that a distance plate (11) is located under the angle-setting plate (10) for vertically adjusting the height of the fastening part (6). 7. A device according to any one of claims 1 to 6, characterized in that a distance plate (5) is located under the backing plate (1) for vertically adjusting the height of the backing plate (1). 8. A device according to any one of claims 1 to 7, characterized in that at least one intermediate plate (4) made of low-stiffness material is located under the backing plate (1) for the purpose of damping. 9. Device according to any one of claims 1 to 8, characterized in that the anchoring element installed in the path (3) does not pass through the backing plate (1). 10. A device according to any one of claims 1 to 9, characterized in that the following path (3) has a flat surface under the device without form-locking structures.