DE3906237A1 - Method for controlling the temperature of track constructions for high-speed railways - Google Patents

Abstract

The invention relates to a method for controlling the temperature of track constructions for high-speed railways. The method relates to the field of the railway superstructure and can be employed chiefly in track installations which are subjected to large axial loads and high speeds. To maintain a constant temperature of the running rails of about +15@C, heated or cooled compressed air is blown into the hollow space, formed by a supporting slab and a covering plate, of the slab-like supporting structure. <IMAGE>

Description

The invention relates to a method for tempering Track constructions for high-speed railways. they refers to the area of the railway superstructure and can mainly used in track systems that exposed to high axle pressures and high speeds are. It concerns a railway superstructure construction after the Preamble of claim 1.

The invention aims to occur at high temperatures tending excessive compressive stresses or from deep tempera resulting inadmissible tensile stresses in the track were to be excluded, especially in the rails and the effort for the maintenance of the track systems in the Decrease winter months.

Regarding the state of the art, it can be said that a plate-shaped Supporting structure for track systems still subject to unpublished patent application in which a U-shaped support plate made of concrete and one on the after top flanges of the support plate at rest Cover plate made of steel a herme closed on all sides limit the table-sealed cavity by means of the compressed air forms an enclosed air cushion. This supporting structure is characterized by a small Ge important, high elasticity and excellent noise insulation properties. In addition, it is able to absorb high static and dynamic loads and to drain safely into the underground. At high temperatures in summer and low temperatures in winter, however defects also in the construction shown above occur that adversely affect the quality and operation affect the safety of the track system and a significant one Disruptive factor in the schedule processing of the Fahrbe are impulsive. Such defects include in particular Rail breaks and track warping. The in the winter mo snow removal and thawing work to be carried out also require a lot of manual work and costs.

The invention has for its object a track system of the type mentioned at the outset to improve that the system parts, especially the rails, constantly have a constant temperature of around + 15 ° C and consequently in a tension-free, maintenance friendly condition.

According to the invention the object is achieved in that in that of a U-shaped support plate made of concrete and egg on the upward flanges of the supports Flat resting cover plate made of steel, on all sides closed and hermetically sealed cavity of the plate-shaped supporting structure heated or cooled Compressed air is blown in. The method according to the invention also includes the following steps:

• - continuous measurement of the temperature of the vehicle rails;
• - Evaluation of the measurement results in a central guide Job;
• - Automatic control and regulation of the feeder warmed or cooled compressed air to the cavity of the Support structure depending on the measurement results nits.

The solution shown here are the characteristic ones Features of claims 1 and 2 based.

The advantages achieved with the invention are in particular the fact that with the technological steps of before lying invention a track system in the GDR patent registration DD-WP E 01 B / 31 25 206 exposed type in the way is improved that the plant parts, ins special the rails, in a tension-free closing stand. From broken rails and faulty tracks resulting dangers can be averted or closed be reduced at least considerably.

The embodiment of the invention is in the drawing shown and is described in more detail below. It shows

Fig. 1 shows the cross section through the interacting with the inventive method track construction.

A U-shaped support plate 9 made of concrete and a resting on the upward flanges of the support plate 9 of the cover plate 3 made of steel delimit an all-round closed and hermetically sealed cavity 8 , in which to maintain a constant temperature of the U-shaped spring elements 2 fixed travel rails 1 heated or cooled compressed air is blown in. Between the cover plate 3 and the flanges of the support plate 9 there are elastic sealing elements 11 . The support plate 9 rests on a lean concrete layer 10 . Valve boxes 12 installed on the outside next to the support plate 9 accommodate the following system parts:

• - Compressed air supply pipes 14 and compressed air discharge pipes 14 a , which are provided with a jacket;
• Valves 15 ;
• - Compressed air supply pipes 16 with inflow opening 17 and compressed air discharge pipes 16 a with outflow opening 18 which engage in the cavity 8 .

List of used Reference numerals

1 - rails
2 - spring elements
3 - cover plate
8 - cavity filled with compressed air
9 - support plate
10 - lean concrete layer
11 - sealing elements
12 - valve boxes
13 - pipe casing
14 - Compressed air supply pipes
14 a - compressed air discharge pipes
15 - valves
16 - Compressed air supply pipes
16 a - compressed air discharge pipes
17 - Inflow opening
18 - drain opening

Claims (2)

1. A method for tempering track structures for high-speed railways, in which compressed air is introduced into a cavity formed by a U-shaped support plate made of concrete and a cover plate made of steel resting on the upward-facing flanges of the support plate is characterized in that in order to maintain a constant temperature of the rails ( 1 ) of about + 15 ° C heated or cooled compressed air in the by the support plate ( 9 ) and the cover plate ( 3 ) cavity ( 8 ) is blown sen. 2. The method according to claim 1, characterized in that the temperature of the rails ( 1 ) is measured continuously, the measurement results are evaluated in a central control center and the supply of heated or cooled compressed air to the cavity ( 8 ) depending on the measurement results is automatically controlled and regulated.