The future development of the clip fastener system

With the increase of the axle load of railway locomotives and the increase of train speed, as well as the development of urban rail transit and subway, spring bars, as a key link of track structure, are constantly developing, and their importance is becoming more and more important. The concern of various countries is that on conventional lines, it is necessary to buckle with large pressure and good elasticity to meet the needs of heavy-duty and high-speed lines;

In the viaduct track seamless line, in order to reduce the interaction force between the rail and the bridge, the fastener resistance is required to be small, and the elastic strip must be sufficiently elastic, that is, to ensure that the elastic strip has a sufficiently low rigidity to ensure When the train passes, the pressure loss of the buckle caused by the compression of the cushion under the rail is very small, and the fastener does not loosen.

It can be seen that although the spring bar is a small public service device, it is an important part on the track. Because of its large demand, about 7,000 pieces per kilometer, its reliability is directly related to the safety of driving.