An adjustable periodic damping steel rail

A technology of periodic damping and steel rails, applied in the direction of steel rails, tracks, roads, etc., can solve the problems of ineffective vibration and noise reduction measures, and achieve the effect of widening the bandgap range, easy parts, and strengthening the effect of vibration and noise reduction

Active Publication Date: 2022-04-26
EAST CHINA JIAOTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the current situation that the existing vibration and noise reduction measures have no obvious effect in the low and medium frequency domain, and provide an adjustable periodic damping rail based on phononic crystals and particle dampers

Method used

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  • An adjustable periodic damping steel rail
  • An adjustable periodic damping steel rail
  • An adjustable periodic damping steel rail

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Embodiment Construction

[0027] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] combine Figure 1-Figure 5 An adjustable periodic damping steel rail in this embodiment is described, which includes a rail body 1, a layered phononic crystal structure 2, a one-dimensional phononic crystal damping layer 3, a lateral vibration transmission rod 4, a belt Hole bolt rod 5, fastening nut 6, vertical vibration transmission rod 7, particle damper 8, crank connecting rod cavity 9, rectangular section cavity 10.

[0029] According to the principle of damping dynamic vibration absorption and vibration isolation, the layered phonon crystal structure and the one-dimensional phonon crystal vibration damping layer in the present invention can increase the vertical static stiffness and damping of the rail, and improve the attenuation of wheel-r...

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Abstract

The object of the present invention is to provide an adjustable periodic damping steel rail, which is characterized in that it includes a rail body, a layered phononic crystal structure, a one-dimensional phononic crystal damping layer, a lateral vibration transmission rod, a bolt rod with holes, Fastening nut, vertical vibration transmission rod, particle damper, crank connecting rod cavity, rectangular section cavity. The solution of the present invention increases the vertical static stiffness and damping of the rail, improves the attenuation rate of the wheel-rail vibration along the track direction, and at the same time blocks the primary noise radiated by the wheel-rail, and effectively controls the vibration and noise in the low-medium frequency domain of the track structure. Vibration energy is dissipated in a wide frequency band from 0 to 2000 Hz, and the overall structure is easy to disassemble and replace parts.

Description

technical field [0001] The invention belongs to the field of vibration reduction and noise reduction of rail transit, and in particular relates to an adjustable periodic phonon crystal damping rail applied to urban rail transit and high-speed railways. Background technique [0002] In recent years, rail transit has developed vigorously due to its advantages of large transport volume and low energy consumption. With the increase of operating mileage and the improvement of operating speed, the environmental vibration and noise problems caused by rail transit have become increasingly prominent. The severe vibration generated by the friction between wheels and rails and the noise radiated to the outside are still the main sources, which directly affect the living environment of people, cause fatigue damage to train components, and reduce the service life of key parts of the track structure. [0003] At present, rail transit has adopted a variety of vibration and noise reduction ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B19/00E01B5/02
CPCE01B19/003E01B5/02
Inventor 冯青松周涛张凌杨立新毛建红
Owner EAST CHINA JIAOTONG UNIVERSITY
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