CS197210B2 - Railway transition in the level of rails - Google Patents

Description

However, the practical use of this railway crossing has shown considerable drawbacks, the continuous passage of vehicles through the railway crossing results in vibration effects, which cause sliding of at least the lower profile part and in most cases also the formation of cracks in the supporting edges.

Both of these drawbacks are eliminated according to the invention by the fact that the plates have a rebate on their underside and that the support on the side surface of the rebate thus avoids the substantially vertical as well as the substantially horizontal surface of the rebate. This prevents the rubber support from slipping even when the plate is vibrated, and cracks in the supporting edge are largely prevented. The achievement of these objectives can be further improved by additional measures:

It has proven to be particularly advantageous if at least a portion of the surface of the support adjacent to the side profile of the rail is provided with grooves that run in the direction of the rails.

A further improvement can be achieved by holding the support also laterally in the rebate, in that the rebate is bounded by at least one side wall. In particular, it has been shown that, especially at railway crossings where the rails run at an angle to the median plane of the road other than the right angle, it is necessary to fear that the support slips not only downwards but also laterally. This lateral slip can be virtually eliminated by providing the wall according to the invention.

In particular, the improvement measures taken specifically to prevent crack formation in the abutment edge consist in the formation of a recess, for example a semicircular at the abutment edge, at the upper end of the stepped recess in the plate, thereby substantially reducing stress on the rubber material at this edge.

Finally, it has also proved expedient to skew the rubber supports at the location of the smallest radius of curvature of the side profile of the rail so that the support does not come into contact with the rail but a cavity is formed. Indeed, since the rail profile is subject to certain variations in tolerance, at this point, at positive tolerances, there is a pressure on the support which is transmitted to the support edge and can cause cracks here.

Although adapting the support on the side of the adjacent rail to the lateral profile of the rail is a well-known requirement, it has nevertheless proved particularly useful to adapt the support to the rail mounting angle, which often deviates slightly from the vertical. Indeed, under the enormous forces which the rubber support supports pass over heavy vehicles, the slight inaccuracies lead to deformations and cracks in the support.

The invention is illustrated by way of example in the accompanying drawings, in which:

Giant. 1a and 1b show a sectional view of a part of a known railway crossing adjacent one of the rails, Figs. 2 and 3 a sectional view of a part of a railway crossing according to the invention adjacent to one of the rails;

As shown in FIG. 1a, the rail crossing is provided with plates 1 and 2 resting on the rail 6 by means of supports 3, 4, 5. The shape of the support 4 together with the support 5 corresponds to the shape of the support 3, but the supports 4 and 5 form separate parts , which do not associate together in order to achieve easy assembly of the railway crossing.

This known rail crossing has the disadvantage that, as shown in Fig. 1b, the lower sections 7 and 8 of the supports 3 and 5 are pushed away from the rail by the inclination of the plates 1 and 2, thereby causing them to be pushed away from the rail in the transition areas 9 and 10. to the cracks.

To prevent this, the plates 1 and 2, as shown in FIG. 2, are provided on their underside with rebates 11 and 12, to which abutments 3 ‘and 5 těs abut. In order to prevent sliding of the supports 3 ‘and 5‘, the lower surfaces 13 and 14 are provided with grooves which run in the direction of the rails. Instead of this scoring, however, any other suitable profiling may be performed. In order to prevent uneven abutment of the supports 3 ‘, 4‘, 5 ‘to the rail 6, which may be caused by an irregular profile of the rail 6, the edges 15, 16, 17 and 18 of the supports 3‘, 4 ‘, 5‘ are chamfered. However, since relative movements between the supports 3 ', 4', 5 'and the plates 1 and 2 cannot be prevented, and since cracking may occur in the most vulnerable sections 19, the supports 3' and 5 * are provided with a semicircular recess in the region of these sections. 22 running in the longitudinal direction of the rails 6.

In order to increase the train's parallelism, the rails 6, as shown in FIG. 3, are generally inclined to each other at an angle α. FIG. 3 shows the shaped pieces 3 ", 4" and 5 "that compensate for this inclined position of the rail 6. with regard to plates 1 and 2.

FIG. 4 shows a plate 2 in which the rebate 12 is interrupted by walls 20 and 21 in the longitudinal direction. This prevents lateral movement of the supports. In addition to these walls 20 and 21, other protrusions and recesses may be provided, or the plates may be provided with special profiling to prevent lateral ejection of the supports.

Claims (4)

1. A rail crossing at the rail level consisting of plates forming part of the track of a non-rail vehicle resting on a side adjacent to the rail on supports whose shape corresponds to the lateral profile of the rails, characterized in that the plate (i, 2) has its lower side of the rebate (11, 12J) and that the support (3, 4, 5) on the side facing the plate (1, 2) abut both the substantially vertical and the substantially horizontal surface of the rebate (11, 12). Railroad crossing according to claim 1, characterized in that the rebate (11, 12) of the plate (1, 2) is bounded by at least one side wall (20, 21). Railroad crossing according to claim 1 or 2, characterized in that at least a part of the surfaces (13, 14 J of the support (3, 5) adjacent to the BACKGROUND OF THE INVENTION The rail profile (6) is provided with grooves (13, 14) extending in the direction of the rails (6). _ Railroad crossing according to one of Claims 1 to 3, characterized in that the support (3, 4, 5) forms, with the side profile of the rail (6), at the point of the smallest radius of curvature of the support (3 ', 4', 5 '), (6) cavities. Railroad crossing according to one of Claims 1 to 4, characterized in that the support (3, 4, 5) is provided with a recess (22) at the upper end of the rebate (11, 12J) in the plate (1), for example semicircular. Railroad crossing according to Claims 1 to 5, characterized in that the support (3, 4, 5) is adapted to the mounting angle («) of the rail profile (6) on the side of the adjacent rail (6). 4 sheets of drawings Severography, n. P., Zivod 7, Most