The Relationship Between Elastic Fasteners And Shrapnel

We all know that clip fasteners are important railway accessories, but clip fasteners must be used in combination with other railway accessories to play a role. When clip fasteners work, they mainly use the bending and deformation properties of the material, and the processing is relatively simple. The cost is also often lower, but because the holes are opened for bolt fastening, stress concentration is prone to occur in this part, and the surface bending moment is the place where the section is weakened. The arched shrapnel fasteners developed in my country in the early stage found that the bolts were easily broken when tightened, and the vibration generated when the train passed was easy to loosen the shrapnel, and even some nuts were withdrawn from the bolts. In addition, the gauge baffle plate is easy to climb to the bottom of the rail under the action of vibration, causing the gauge to expand, and shrapnel fasteners are no longer used on other track lines.
The buckle buckle uses the bending deformation performance of the material and the torsional deformation performance of the material (especially the circular cross-section spring) when working, so the elasticity is generally good, and there is basically no cross-section weakening, so the utilization rate of the material is high. , On the conventional line, it is generally hoped that the buckle has a large buckle pressure and good elasticity. In this regard, the elastic strip fastener has obvious advantages. At present, most of my country's railways and other rail transits use elastic buckle parts.