Method for improving damping performance of steel rail damper, and steel rail damper

Abstract

The invention relates to a method for improving the damping performance of a steel rail damper. A friction energy dissipation surface is formed in a manner of converting vertical vibration into horizontal vibration of a base to dissipate vibration energy, so that the damping performance of the steel rail damper is improved, and a better vibration and noise reduction effect is achieved. The invention further relates to a steel rail damper for realizing the method. The steel rail damper comprises an upper wearing layer, an energy absorption layer, a lower wearing layer and a base, the base comprises a base I and a base II, the base I is elastically connected with the base II through a plate spring, and the contact surface of the lower wearing layer and the base is V-shaped or inverted-V-shaped. The vertical load is decomposed into two reverse component forces in the horizontal direction, so that the base I and the base II are pushed to move reversely, friction is generated between the upper surfaces of the base I and the base II and the lower surface of the lower wearing layer, vibration energy is consumed, and the damping performance of the steel rail damper is improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit vibration reduction and noise reduction, and in particular relates to a method for increasing the damping performance of a rail damper and the rail damper. Background technique [0002] With the rapid development of domestic subways, a large number of ballastless tracks are used in the track. The ballastless track lacks the ballast vibration-reducing energy-dissipating layer between the rail and the track foundation. The damping is small, and the vibration energy inside the track is difficult to dissipate. The vibration propagates along the rail for a long distance along the rail transit line, and is transmitted downward to the track infrastructure and upward to the vehicle. The high-frequency action caused by the periodic wear of the wheel and rail seriously affects the The quality of life of people along the rail transit line, and the fatigue damage of the fastener system, vehicles and auxi...

AI Technical Summary

Problems solved by technology

[0011] "A ballastless track rail fixing structure and its rail support device" in the above-mentioned patent with the publication number "CN105421165B" is the closest prior art. This patent adopts a vertical elastic energy dissipation structure, and the energy dissipation of its rail damper And the damping performance needs to be improved, and the vertical stiffness is relatively large (5 ~ 10KN / mm), and the quality is relatively heavy (15Kg)

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