A vibration damping ring for high-speed train wheels based on phononic crystals

A technology of phononic crystals and train wheels, applied in vibration suppression adjustment, springs/shock absorbers, mechanical equipment, etc., can solve problems such as unsatisfactory vibration and noise reduction effects, extend the number of periodic structure cycles, and improve vibration isolation effect, the effect of improving the vibration isolation efficiency

Active Publication Date: 2019-12-31
EAST CHINA JIAOTONG UNIVERSITY
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the current control measures for wheel-rail noise are not ideal for vibration and noise reduction in the low-frequency range.

Method used

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  • A vibration damping ring for high-speed train wheels based on phononic crystals
  • A vibration damping ring for high-speed train wheels based on phononic crystals
  • A vibration damping ring for high-speed train wheels based on phononic crystals

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specific Embodiment approach 1

[0026] Specific implementation mode one: the following combination Figure 1-Figure 3 Describe a phononic crystal-based high-speed train wheel vibration damping ring in this embodiment, which includes an outer ring 1, an inner ring 2, a Bragg type phononic crystal vibration isolation ring 3, and a local resonance type phononic crystal vibration isolation component 4 , connecting rod 5, vibration transmission ring 7, vacuum suction cup 6;

[0027] Among them, the Bragg-type phononic crystal vibration isolation ring 3 is processed with a circular hole-shaped groove 8 , and annular scatterer sheets are periodically arranged in the groove 8 .

[0028] Wherein, the base body of the local resonance type phononic crystal vibration isolation component 4 is an arc-shaped thin-layer structure, and circular grooves are processed on the thin-layer structure, and 9 spherical local resonance units are periodically arranged in the grooves.

[0029] The inner ring 2 and the outer ring 1 are ...

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Abstract

The invention relates to a high-speed train wheel vibration reducing ring based on a phononic crystal. The high-speed train wheel vibration reducing ring based on the phononic crystal comprises an inner ring, an outer ring, a Bragg-type phononic crystal vibration isolating ring, a local resonance-type phononic crystal vibration isolating component, a connecting rod, a vibration transmitting ring,and a vacuum sucker. The high-speed train wheel vibration reducing ring based on the phononic crystal is simple in whole structure, convenient to manufacture, has lower requirements to a working environment, and can be used for reducing noise generated by wheels of a high-speed train, improving noise and vibration performance of the high-speed train wheels, and improving the working environment ofworkers and the like.

Description

technical field [0001] The invention belongs to the field of rail traffic vibration reduction and noise reduction, and in particular relates to a high-speed train wheel vibration reduction ring based on phononic crystals. Background technique [0002] At present, my country's high-speed railway has entered an era of rapid development. With the increase of train speed, the dynamic interaction between high-speed trains and track structures has been significantly intensified, and the vibration problems of track structures have become increasingly prominent. Among them, wheel-rail noise is particularly prominent. This directly affects The health and service life of the track structure, as well as the safety and comfort of train operation. In addition, when the high-speed rail passes through residential areas and urban areas, the environmental vibration and noise pollution caused adverse effects on the work and life health of residents along the line, as well as the normal use of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/124
CPCF16F15/124
Inventor 冯青松杨舟张新亚辛伟
Owner EAST CHINA JIAOTONG UNIVERSITY
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