What are the functions of spring bars in railway tracks?

The fasteners of sexual fasteners are mainly elastic strips. It generates buckle on the track through the bending and torsional deformation of the elastic strip. It is conducive to ensuring long-term reliable connection between tracks, maintaining the integrity of the track as much as possible, preventing vertical and horizontal movement of the track relative to the sleepers, ensuring normal track gauge, and ensuring the safety of rail vehicles.

In addition, since the contact between the train wheels and the rails is rigid, vibration is inevitable, and the elastic structure of the elastic bars also has the ability to absorb the impact energy generated when the vehicle passes by, achieving a shock-absorbing effect.

The elastic bar works under repeated alternating stress. It is subject to bending, torsion, fatigue and corrosion. When the vehicle passes, it also withstands high instantaneous impact loads, so the performance requirements of the elastic bar are very strict.

As a key link in the track structure, national railway clips are also developing continuously, and their importance has attracted increasing attention from various countries. On conventional lines, in order to meet the needs of heavy-load and high-speed lines, high-voltage fastening of the clips is required.

In the seamless track of viaducts, in order to reduce the interaction between the rail and the bridge, the resistance of the fasteners is required to be small and the elastic bars are low enough to ensure that when the train passes, the buckling loss caused by the pressure of the underlayment of the rails is Small, fasteners don’t come loose. It can be seen that the elastic strip is a small public engineering device, but it is an important component on the track. Due to its large demand, about 7,000 strips per kilometer, its reliability is directly related to driving safety.