The importance of elastic strip quality

The buckling parts of elastic fasteners are mainly elastic bars. Through the bending and torsional deformation of the elastic bars, the buckling acts on the rails to ensure long-term reliable connection between the rails, try to maintain the integrity of the rails, and prevent the rails from moving laterally and laterally relative to the sleepers. Ensure the normal track gauge, thereby ensuring the safety of rail vehicles.

In addition, since the contact between the train wheels and the rails is rigid, vibrations will inevitably occur, and the elastic structure of the elastic bars also has the ability to absorb the impact generated when vehicles pass by, achieving a shock-absorbing effect. Clip manufacturers believe that clips operate under repeated and alternating stresses. It can withstand bending, torsion, fatigue and corrosion, and also withstands high instantaneous impact loads when vehicles pass by, so the performance requirements for the elastic bars are very strict.

On conventional lines, elastic strips with high buckling pressure and good elasticity are required to meet the needs of heavy-load and high-speed lines; while in seamless lines of viaduct tracks, in order to reduce the interaction force between the rail and the bridge, fastener resistance is required Smaller, and ensure that the elastic strips have sufficient elasticity, that is, ensure that the elastic strips have a sufficiently low rigidity to ensure that the loss of buckling pressure caused by the compression of the under-rail cushion when the train passes is very small and the fasteners do not loosen.