An embedded rail vibration-damping fastener and its preparation method

Abstract

The invention discloses an embedded track vibration attenuation fastener and a preparation method thereof, and belongs to the field of city track traffic. The embedded track vibration attenuation fastener comprises a track bearing plate, a track bearing plate base and an elastic component. The elastic component is fixedly connected to the top of the track bearing plate base. The track bearing plate is arranged at the top of the elastic component. The track bearing plate, the track bearing plate base and the elastic component form an integrated structure through the wrapped type design. The invention further discloses the preparation method of the embedded track vibration attenuation fastener. According to the scheme, the problem that the transverse stiffness of an existing vibration attenuation fastener is low is solved, the transverse stiffness, the up-pull resistance and the small inclination resistance are improved, thus, the driving safety is ensured, and the service life of the track vibration attenuation fastener is prolonged.

Description

technical field [0001] The invention relates to the field of urban rail transit, in particular to an embedded rail vibration-damping fastener and a preparation method thereof. Background technique [0002] Rail transit has gradually become the main means of transportation for the public, which inevitably brings about the problem of vibration and noise pollution while bringing fast transportation. For many existing lines, due to the early planning and construction time, the near-track living areas have not yet been clustered, and the requirements for vibration reduction of the track are not high, and ordinary fasteners are generally used in many locations. The main function of ordinary fasteners is to fix the rail and at the same time partially relieve the vibration caused by the impact of the wheel and rail. Therefore, the rigidity is not high, generally 40-80kN / mm, and its installation height is relatively low, generally 42-80kN / mm. 46mm. [0003] With the formation of ne...

AI Technical Summary

Problems solved by technology

The continued use of ordinary fasteners gradually cannot meet the current needs

The commonly used method at home and abroad is to use rail damping fasteners for upgrading and transformation, but at present, even the installation height of the lowest compression damping fasteners is more than 50% higher than that of ordinary fasteners, and the installation interfaces are not completely consistent. Does not apply to our track

It is very difficult to implement the reconstruction of the track system structure of the existing line. At the same time, the performance of the vibration-damping fasteners is restricted by the two factors of vibration-damping effect and safety. The current public track vibration-damping The dynamic-to-static ratio of fasteners is more than 1.4, and the vibration reduction effect is not satisfactory.

In addition, the elastic parts of the track damping fasteners are generally made of rubber, and the elastic parts are simply installed with pad pressure during installation. There is a large gap between the elastic parts and other parts, which will aggravate the aging and service life of the elastic parts. At the same time, as the global temperature increases year by year, the aging resistance of rubber also affects the service life of the fastener. Therefore, there is an urgent need for a rail vibration-damping fastener that can be directly replaced, has superior performance and can be used effectively for a long time

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