EP3290584A1 - Device for fixing a rail for rail vehicles - Google Patents

Abstract

Device for fastening a rail (2) for rail vehicles, comprising a metal sleeper (1) with at least one opening (3), wherein an anchor member (9) passes through the opening (3), and wherein the anchor member (9) engages the rail (2) by means of a tensioning clamp (8) against the metal sleeper (1) pulls. The tensioning clamp (8) is also supported on a holding member (6), wherein the holding member (6) is supported in a transverse direction by means of a transverse support (4) arranged on the metal sleeper (1) against operational transverse forces, and wherein the anchor member (9) Having in the transverse direction under operating conditions a free play in the opening (3).

Description

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

From the CH 654362 A5 is known a system for fixing a rail on a hollow sleeper of metal, in which with the interposition of a clamping force causing spring ring a hook bolt passes through an elongated opening in the hollow sleeper and is pulled over a positive connection from below against the hollow sleeper. In such an arrangement, transverse forces occurring during driving are predominantly introduced into the hollow sleeper via the hook bolt resting in the opening, supported by a rail guide plate which further conducts the transverse displacement forces to the sleeper.

DE 44 06 105 A1 describes a rail mounting on two steel beams, in which a first pair of bolts presses a rail by means of clamps against a ribbed plate, wherein the ribbed plate is fixed via a second pair of bolts without clamps on the steel beams.

In other known solutions for the use of steel sleepers, the rails are not mounted directly on the threshold, but on expensive to produce rail mounting plates, which in turn are welded to the threshold.

It is the object of the invention to provide a device for fastening a rail for rail vehicles, which allows a simple and durable determination of a rail on a metal sleeper with avoidance of unnecessary force on the metal sleeper.

This object is achieved for an aforementioned device according to the invention with the characterizing features of claim 1. By supporting the holding member on the cross support with play for the anchor member can be prevented that the operational transverse forces are transmitted via a direct contact of the anchor member to a wall of the opening.

The inventive concept of a rail fastening allows the anchor member has essentially the task to fix the rail in the vertical against the metal sleeper, while occurring in operation transverse forces of the rail are primarily introduced via the support member and the cross brace in the metal sleeper. As a result, on the one hand a division of the acting forces is achieved, which allow a total of large operating forces with a long service life and prevent wear of the metal sleepers. On the other hand, characterized in that the anchor member has a free play in the opening in the transverse direction under operating conditions, a support of the transverse forces at the edge of the opening is avoided. This reduces the risk of cracking on the metal sleeper.

Thresholds made of steel are preferably understood as meaning a metal sleeper. The shaping of the metal sleeper can, apart from the features according to the invention, take place in a conventional manner, for example as an open or closed trough threshold, as I-threshold, T-threshold or otherwise. In the general sense of the invention, a metal sleeper is understood to mean any metallic base, that is, for example, metal plates which have several directions according to the invention in the direction of travel of the rail, but not from several elements, known Y-steel sleepers, in which two curved steel profiles by bolts welded or connected together on the top and bottom.

Depending on requirements, different intermediate plates made of a damping material such as plastic between the rail and the metal sleeper can be used.

A tension clamp is within the meaning of the invention, each resilient means which can be acted upon by a clamping path with a defined bias and presses the rail by means of the bias down in the direction of the metal sleeper. Usual tension clamps are often pre-bent from correspondingly elastic round material.

In the context of the invention, an anchor member is generally understood to mean any fastening means capable of being subjected to tension, which on the one hand is held against the metal sleeper and holds the rail down against the metal sleeper. Examples of preferred anchor members according to the invention are positively held in the metal sleeper bolts with a thread at an upper end. The bolt can be plugged, for example with a bolt head at a lower end through a slot in the metal sleeper and then twisted to make a positive connection.

The transverse direction extends in the sense of the invention horizontally and transversely to an extension direction of the rail.

In an advantageous embodiment of the invention, it is provided that the rail is insulated by means of electrically insulating components relative to the metal sleeper. The electrical insulation can be done for various purposes, for example as a safety mechanism or for signaling reasons. The insulating components may in particular consist of a plastic. By way of example, an insulating sleeve may be arranged around the anchor member.

Generally, it is provided that the holding member comprises an angle guide plate for the tension clamp. Such an angle guide plate supports the tension clamp and guides it in the course of a tension during assembly of the rail. The angle guide plate can also be a stop e.g. for a nut, so that a precise bias of the tension clamp is defined.

In a preferred embodiment, the angle guide plate may be at least partially formed of an electrically insulating material. This allows in a particularly simple manner electrical insulation of the rail against the metal sleeper.

Generally, it is provided that a positioning of the rail with respect to the metal sleeper in the transverse direction can be selected by means of the retaining member. For this purpose, for example, holding members of different widths can be prefabricated. Alternatively or additionally, the holding members may comprise usable laterally acting spacers, which are present in different widths and are selected as required.

To reduce force peaks and general wear reduction, it may be provided that the holding member is formed elastically deformable in the transverse direction. This can be done by deliberately provided beads, material recesses or the like. A spring constant of the holding member in the transverse direction can be optimized by such measures or adapted to the operating forces expected to lateral forces.

In a generally preferred embodiment, the metal sleeper may be shaped as a trough sill. Trough sleepers are particularly suitable for transferring high transverse forces into a ballast bed and can be ideally combined with an attachment according to the invention for the rail.

For better force distribution, the transverse support may comprise a longitudinal body extending in a rail longitudinal direction and releasably - for prefabrication with adaptation to different track widths - or insoluble, z. B. by welding, be connected to the metal sleeper. Preferably, the longitudinal body extends substantially over a length of a support surface of the rail on the metal sleeper, so that an optimal distribution of the introduction of force via the threshold width.

Fig. 1

eine räumliche Gesamtansicht einer erfindungsgemäßen Vorrichtung;.

Fig. 2

eine explodierte räumliche Ansicht der Vorrichtung aus Fig. 1;

Fig. 3

eine räumliche Detailansicht der Vorrichtung aus Fig. 1 von unten;

Fig. 4

eine räumliche Ansicht einer Winkelführungsplatte der Vorrichtung aus Fig. 1; und

Fig. 5

die Winkelführungsplatte aus Fig. 4 von unten.

In principle, the transverse support can also comprise recesses or openings in the metal sleeper, in which a corresponding counterpart of the retaining member engages positively and / or frictionally engaged. Even such arrangements allow a distributed over a large width initiation of the transverse forces in the metal sleeper, which is separated from the perpendicular acting holding force of the anchor member.
Further advantages and features will become apparent from the claims and the following description of a preferred embodiment of the invention shown in the drawings. Show it:

Fig. 1

a general view of a device according to the invention.

Fig. 2

exploded spatial view of the device Fig. 1 ;

Fig. 3

a spatial detail of the device Fig. 1 from underneath;

Fig. 4

a spatial view of an angle guide plate of the device Fig. 1 ; and

Fig. 5

the angle guide plate off Fig. 4 from underneath.

The fastening device comprises a metal sleeper 1 extending in a transverse direction, on which two parallel, perpendicular to the transverse direction in a Rail longitudinal direction extended rails 2 are applied to guide a rail vehicle.

The metal sleeper 1 is presently designed as a trough threshold of a correspondingly formed steel sheet. The determination of the two rails 2 is identical, so that reference will be made hereinafter only to the definition of one of the rails.

To fix the rail 2 to the metal sleeper 1 two openings 3 are introduced in the steel sleeper, which are arranged in the manner of in the transverse direction, d. H. are also orthogonal to the rail extending, elongated holes are formed. On the top of the metal sleeper two transverse supports 4 are fixed. The transverse supports 4 are formed as simple strips which extend in the rail longitudinal direction. In this case, the transverse supports 4 extend at least approximately over a length which corresponds to a bearing surface of the rail 2 on the metal sleeper 1.

The openings 3 are arranged within the region between the transverse supports 4. The rail 2 is supported on the metal sleeper 1. For better damping, an intermediate plate 5 made of an elastic material, in the present case a plastic, is inserted between the rail 2 and the metal sleeper 1. The intermediate plate 5 assumes no functions of reinforcing the metal sleeper, so that the rail 2 rests directly on the metal sleeper 1 with respect to the supporting forces.

On each side of the rail 1, a holding member 6 is arranged between the respective transverse support 4 and a rail 2a of the rail 2. The holding members 6 are formed identical on each side of the rail. Each of the two holding members 6 comprises an angle guide plate 7, a tensioning clamp 8 and an anchor member 9. In this case, the angle guide plate 7 rests on the metal sleeper 1 and supports or guides the resilient tensioning clamp 8. The tensioning clamp 8 is on one side guided in recesses 7a of the angled guide plate 7 and engages with another side from above the rail 2a.

The anchor member 9 is formed as a bolt-like tie rod having an elongated closure head 9a at a lower end and an external thread 9b at an upper end. The anchor member is inserted with the closure head 9a through the respective opening 3 of the metal sleeper 1 and twisted to produce a positive connection. Subsequently, the angle guide plate 7 and the tension clamp 8 are placed over the anchor member and the tension clamp is tightened by means of a nut 10 corresponding to the external thread 9b and washers 11.

In this case, the clamp presses the rail 2a substantially vertically downwards against the metal sleeper 1. The anchor member has sufficient clearance in the slot in the transverse direction, so that lateral forces are not introduced by a contact of the anchor member in the opening 3 in the metal sleeper 1.

The holding member 6 or the angled guide plate 7 fills the area between the rail foot 2a and the transverse support 4 without play, so that transverse forces occurring during operation are introduced into the transverse supports via the holding members.

In this case, the angle guide plate 7 rests with a contact edge 7b on the transverse support 4, so that the force is distributed over the length of the transverse support. An extension of the angle guide plate also overlaps the transverse supports 4 in the region of the contact edge 7b.

To reduce force peaks occurring the angle guide plate is designed to be elastic in the transverse direction, wherein a spring constant is chosen in this direction according to the expected force peaks. These are in the Angled guide plate specifically formed weakenings 7c, which allow an elastic deformation by a corresponding certain stroke.

The device also allows, if necessary, an electrical insulation of the rail 2 with respect to the metal sleeper 1, for example for the construction of conventional safety circuits in the field of signal boxes or the like.

For this purpose, some components such as the intermediate plate 5 are formed of an insulating material such as plastic. In addition, the anchor member is isolated from the tension clamp 8, for example by means of a sleeve 12 surrounding the anchor member 9 made of plastic. In such a case, at least partially, the washers 11 pressing on the tension clamp should be selected from insulating material.

Further, the angle guide plate 7 may be formed for the purpose of isolation of plastic. In other embodiments of an insulated rail but the angle guide plate may also be made of metal and for a corresponding insulating plate between the rail 2a and the angled guide plate may be provided.

In order to allow a sufficiently accurate positioning of the rail 2 in the transverse direction on the metal sleeper, angle guide plates of different widths can be provided. In each case, pairs of angle plates are selected and combined, which ensure a total play-free support between the cross supports 4. The position of the rail 2 relative to the apertures 3 can be changed to some extent. Alternatively, it is also possible to ensure the positioning of the rail by appropriately assembled additional spacers in the transverse direction.

LIST OF REFERENCE NUMBERS

1

metal threshold

2

rail

2a

rail

3

Opening, oblong hole

4

cross support

5

intermediate plate

6

retaining member

7

Angled guide plate

7a

Recesses in the angled guide plate

7b

Abutment edge of the angled guide plate

7c

Weakenings in the angled guide plate

8th

tension clamp

9

anchor member

9a

Locking head of the anchor member

9b

External thread of the anchor member

10

mother

11

washers

12

shell

Claims (7)

Device for fastening a rail (2) for rail vehicles, comprising
a metal sleeper (1) with at least one opening (3),
wherein an anchor member (9) passes through the aperture (3), and
wherein the anchor member (9) pulls the rail (2) against the metal sleeper (1) by means of a tension clamp (8),
characterized,
in that the tensioning clamp (8) is also supported on a holding member (6), wherein the holding member (6) is supported in a transverse direction by means of a transverse support (4) arranged on the metal sleeper (1) against operational transverse forces, and in that the anchor member (9 ) has a free play in the opening (3) in the transverse direction under operating conditions. Device according to claim 1, characterized in that the rail (2) is insulated from the metal sleeper (1) by means of electrically insulating components (5, 7, 11, 12). Apparatus according to claim 1 or 2, characterized in that the holding member (6) comprises an angled guide plate (7) for the tension clamp (8). Apparatus according to claim 3, characterized in that the angle guide plate (7) is at least partially formed of an electrically insulating material. Apparatus according to claim 1, characterized in that a positioning of the rail (2) relative to the metal sleeper (1) in the transverse direction by means of the holding member (7) is selectable. Apparatus according to claim 1, characterized in that the holding member (7) is designed to be elastically deformable in the transverse direction. Apparatus according to claim 1, characterized in that the metal sleeper (1) is formed as a trough threshold.

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