Irregular fracture surface vibration and noise reduction damping steel rail

Abstract

The invention discloses an irregular fracture surface vibration and noise reduction damping steel rail. The irregular fracture surface vibration and noise reduction damping steel rail is characterizedby comprising a rail head, a rail base, and a rail web connected between the rail head and the rail base; a surrounding region among the rail head, the rail base and the rail web forms a hollow cavity; and a damping material is filled in the cavity. The damping steel rail disclosed by the invention has the advantages as follows: (1) compared with an operation of adhering the damping material at the rail web, a constraint layer and a protective layer on the surface of the damping material can be saved, and the bonding strength and the durability and like problems between the damping material and the rail web are out of consideration; (2) the damping steel rail not only can be used for the vibration and noise reduction of the low-speed rail traffic steel rail, but also can be used for the vibration and noise reduction of the high-speed railway steel rail, and is wide in applicable range; and (3) the damping material in the invention is filled in the steel rail, the damping material falling risk is inexistent, and the damping material cannot cause any barrier for the normal driving of the train.

Description

technical field [0001] The invention relates to the technical field of rail transportation, in particular to a vibration-reducing and noise-reducing damping steel rail with a special-shaped section. Background technique [0002] During the operation of steel wheel and rail rail transit, the interaction between the steel wheel and the rail inevitably leads to vibration of the rail, which radiates noise outward. For high-speed railways, because the wheels and rails are more intense when the train is running at high speed, the vibration of the rails is also more intense, and its noise has a greater impact on the environment. For the subway, because the curve radius of the line is small, when the train passes through the curved section, there will be relative sliding between the steel wheel and the rail, and the wheel-rail interaction is more severe than that in the straight section, which will cause the rail to vibrate and radiate outward noise. For the subway, because it is ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, when the rails are damped and noise-reduced, constrained damping structures are pasted on both sides of the rail waist. However, the strength, reliability, and durability of the pasting constrained damping structures on both sides of the rail waist are average. It is difficult to ensure that the surface of the damping material needs to be provided with a constrained layer and a protective layer, which is expensive

Therefore, the similar pasted constrained damping structure on both sides of the rail waist is rarely used in the prior art, and it cannot be used in the vibration and noise reduction of high-speed railway rails at all, because if the pasted constrained damping structure on both sides of the rail waist falls off, the consequences will be disastrous

Images