Retaining and anti-loosening gasket, nut and bolt special for high-speed railway track

Abstract

The invention provides a retaining and anti-loosening gasket, nut and bolt special for a high-speed railway track. The retaining and anti-loosening gasket comprises a gasket body, a first fixed convexstructure is arranged on the lower end face of the gasket body, and a second fixed convex structure is arranged on the upper end face of the gasket body, a third fixed convex structure is arranged onthe upper end face of the retaining and anti-loosening gasket, an inserted-connected structure is arranged on the lower end face of the retaining and anti-loosening nut. A fourth fixed convex structure is arranged on the lower end face of the retaining and anti-loosening bolt,The retaining and anti-loosening gasket, nut and bolt cooperate with one another to serve as a fastener, or the retainingand anti-loosening gasket cooperates with an ordinary nut and bolt separately to serve as the fastener, and the fastener and an elastic bar are cooperatively applied to the high-speed railway track, the fastener can achieve the obvious retaining and anti-loosening effect, and the integrity and stability of the track structure are guaranteed. The first fixed convex structure is clamped into a clearance between two arms of the elastic bar to serve as the fulcrum of the reaction arm, the surface structure of the elastic bar cannot be destroyed, and the performance and strength of the elastic barare not affected.

Description

technical field [0001] The invention relates to a fastener for a high-speed railway track, in particular to a special anti-retraction and anti-loosening washer, nut and bolt for a high-speed railway track. Background technique [0002] In order to connect and fix the rail and the substructure (sleeper rail, backing plate) during the construction of the high-speed railway track, so that the track forms a stable and reliable overall structure, elastic strips and fasteners are often used for fixing. Therefore, it is very important to prevent the fasteners from retreating and preventing loosening. Once the fasteners become loose, it will affect the integrity and stability of the track structure. Ordinary fasteners do not have an obvious anti-retraction and anti-loosening effect. The track fixed by the cooperation of ordinary fasteners and elastic strips needs manual retightening on a regular basis. In the existing anti-retraction and anti-loosening fasteners, the one-way teeth ...

AI Technical Summary

Problems solved by technology

If the existing anti-retraction and anti-loosening fasteners are used to fix the rail, the one-way teeth on the lower end surface of the gasket will be embedded in the surface of the elastic strip (forced member), which will affect the performance and strength of the elastic strip; and the elastic strip is strip-shaped, and the elastic The contact area between the bar and the gasket is small, and it is difficult for the one-way teeth to be completely embedded in the surface of the elastic bar, so it is difficult to achieve the expected effect of anti-retraction and anti-loosening

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