A track damping device used in tunnels

Abstract

The invention provides a track damping device used in a tunnel, the damping device is located directly below the track, and the damping device includes a top plate, a first buffer part, a second buffer part and The base, the first buffer part includes a first buffer part and a first spring, the second buffer part includes a second buffer part and a second spring, the track is fixed on the top board, the first buffer part is fixedly connected with the top board, and the first buffer part Sliding in the second buffer, the first spring is connected between the first buffer and the second buffer in the sliding direction of the first buffer, the second buffer is sliding in the base, the second spring is connected Between the second buffer member and the base in the sliding direction of the second buffer member, the stiffness of the first spring is smaller than the stiffness of the second spring. The stiffness of the shock absorbing device of the present invention can be changed freely, and when the vibration is relatively large, the overall stiffness of the shock absorbing device also becomes larger, which can rapidly absorb shock.

Description

technical field [0001] The invention specifically relates to a rail damping device used in a tunnel. Background technique [0002] In the tunnel, a certain amount of impact will be generated during the contact between the wheel and the track, which will generate vibration and noise. Especially in the tunnel, the vibration and noise will be amplified. Excessive vibration will cause the track to loosen and affect driving safety. In order to reduce the vibration during the running of the vehicle, rubber shock absorbing rings are often lined under the track at present. Since the vibration force on the track is different, especially when the weight and speed of the vehicle are different, in the case of small vibration , the rubber shock absorbing ring with small stiffness has better cushioning and shock absorption effect, but when the vibration is large, the rubber shock absorbing ring with small rigidity will produce a large amount of deformation, which directly affects the shoc...

AI Technical Summary

Problems solved by technology

[0002] In the tunnel, a certain amount of impact will be generated during the contact between the wheel and the track, which will generate vibration and noise. Especially in the tunnel, the vibration and noise will be amplified. Too much vibration will cause the track to loosen and affect driving safety.

In order to reduce the vibration during the running of the vehicle, rubber shock absorbing rings are often lined under the track at present. Since the vibration force on the track is different, especially when the weight and speed of the vehicle are different, in the case of small vibration , the rubber shock absorbing ring with small stiffness has better cushioning and shock absorption effect, but when the vibration is large, the rubber shock absorbing ring with small rigidity will produce a large amount of deformation, which directly affects the shock absorption effect and affects the rubber shock absorption effect. The actual service life of the ring, therefore, it is difficult for the existing rubber shock-absorbing ring to ensure that both small vibrations and large vibrations have good shock-absorbing effects

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