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Today Buy rails in Kiev or any other city in Ukraine is not a difficult task. The main task of the buyer and the contractor is the correct laying of railway tracks in accordance with the existing recommendations.
It is important to understand that this process is performed exclusively according to the accepted technology. This is necessary to ensure the safety of movement of any type of railway train.
Existing tracks can be conditionally divided into temporary tracks and permanent railway tracks. The laying of rails for a temporary canvas is in demand, for example, at mining enterprises or at mines for the transportation of equipment or the removal of spent rock.
The permanent railway track is installed on those sections of the track where the regular movement of freight and passenger trains is planned.
Styling Features
Pre-laying of railway tracks implies carrying out special preparatory work, defined by regulations and rules of safety technology. First of all, this concerns the preparation of the immediate section along which the roads will be laid in the future.
It is necessary to level the soil as much as possible and cover it with a special gravel layer for ballast. The ballast layer is necessary in order to ensure the uniformity of the pressure of the rails on the sleepers and further on the soil section from the railway trains running along the track.
It is important to take into account the climatic conditions, the type of soil, the intensity of the future movement, the maximum weight of the composition in order to correctly choose the thickness of the ballast layer. Usually, this parameter is in the range from 0,9 to 2 m.
Further, the following stages are performed for laying railway tracks:
- Laying wooden or concrete sleepers on a ballast layer with a strictly defined distance between them;
- laying rails, which are fixed with sleepers using a suitable type of railway fastener;
- after laying the rails, it is necessary to fill the free space between the sleepers with crushed stone or gravel to additionally fix the track and prevent its possible "slipping" from the ballast layer.
Laying the track ends with a check of its geometry - special equipment and instruments are used for this. If necessary, certain adjustments are made on the spot.
Features of the track on turns
Depending on the speed of passing through turns, the outer rail is set slightly higher than the inner rail, and the difference can be up to 50 mm. This is necessary for:
- counteraction of centrifugal force,
- ensuring the stability of the composition when passing a turn,
- reducing the wear of the rim of the wheels of the train on the outer rail.
Only new rails are used for turns. Second-hand rails are also quite suitable for temporary sections of track.
