Industry Knowledge

Switch rail descent value !

发布时间：2023-09-22 08:45:18 浏览量：573

Turnout is a component of railway tracks, and as an important part of the turnout, the switch is a device that guides trains to travel in the stock rail direction or the siding direction. The good condition of the switch is closely related to the descent value of the switch rail.

As one of the factors to ensure the good condition of the switch, the descent value of the switch rail mainly controls the descent value of the switch rail point, 5mm section, 20mm section, 50mm section, and the overall rail head section, in order to form a decreasing slope of the switch rail. allows the locomotive to smoothly transfer from the stock rail to the switch rail.

In order to make the wheel transition from the stock rail to the switch rail, it is necessary to make them coordinate with each other, create a smooth transition curve, and consider the requirements of structural design.

If the descent value of the switch rail is too small , it will cause direct stress and collapse of the switch rail point. If the descent value is too large, the wheel transfer can only be completed over a longer distance, and it will cause significant lateral and vertical irregularities.

Therefore, it is necessary to set an appropriate descent value of the switch rail relative to the stock rail.