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Vibration-damping and noise-reducing jacket for railway steel rail

A technology for vibration reduction and noise reduction, rails, applied in the direction of rails, roads, tracks, etc., can solve the problems of poor rail noise radiation effect of rail muffler, far insufficient restraint damping treatment, strong visual impact, etc., and achieve the effect of shock reduction and noise reduction Significant, obvious noise reduction effect, long service life effect

Inactive Publication Date: 2011-05-25
朱颖 +8
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many shock and noise reduction measures, among which the more common method is to use sound barriers, but there are some significant disadvantages of sound barriers: due to noise diffraction, its effect is limited; the effect on high-rise buildings or deep valley environments is limited; Has a strong visual impact; high installation costs
Therefore, it is not enough to only do constraint damping on the rail waist
Therefore, the effect of the rail muffler on reducing rail noise radiation is not good

Method used

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  • Vibration-damping and noise-reducing jacket for railway steel rail
  • Vibration-damping and noise-reducing jacket for railway steel rail
  • Vibration-damping and noise-reducing jacket for railway steel rail

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Experimental program
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Embodiment Construction

[0021] see Figure 1~2 The vibration and noise reduction sheath is composed of a grooved expansion layer 1 coated on the rail bottom 6 and rail waist 5 symmetrically along the rail center line, an inverted T-shaped constraining layer 3 arranged outside the grooved expansion layer 1 and pasted on the The damping layer 2 is formed between the grooved expansion layer 1 and the constraining layer 3 . 7 in the figure is the body of the local vibration noise reduction sheath, and the double-dot dash line is the outline of the rail. The vertical edges on both sides of the constraint layer 3 are connected to the lower end of the rail head, and together with the rail waists with different widths at different heights, the damping layer 2 pasted between the expansion layer 1 with grooves and the constraint layer 3 forms a variable thickness structure. Figure 3-5 A schematic diagram of the structure of the expansion layer with slots is given. 8 is a groove among the figure. Figure 6 ...

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Abstract

The invention relates to a vibration-damping and noise-reducing jacket for a railway steel rail, belonging to the field of vibration-damping and noise-reducing technology in rail traffic. The vibration-damping and noise-reducing jacket is characterized by comprising a band groove expanding layer, an inverted T-shaped restricting layer and a damping layer, wherein the band groove expanding layer is symmetrically coated on the steel rail bottom and the rail waist along the central line of the steel rail; the inverted T-shaped restricting layer is arranged outside the band groove expanding layer; and the damping layer is bonded between the band groove expanding layer and the restricting layer. The vibration-damping and noise-reducing jacket has the advantages of inhibiting wheel rail vibration and noise radiation from sound source and obviously reducing vibration and noise. The vibration-damping and noise-reducing jacket is simple to manufacture and convenient for field assembly and disassembly without influencing the primary function of steel rail, and is suitable for the areas with requirements on noise of railway, subway and urban light rail in urban district.

Description

technical field [0001] The invention relates to a vibration-damping and noise-reducing sheath installed on railway rails. The invention belongs to the technical field of rail transit vibration reduction and noise reduction. Background technique [0002] The vibration and noise generated by rail transit have a great impact on the surrounding environment along the line, and are one of the sources of environmental pollution. At present, there are many shock and noise reduction measures, among which the more common method is to use sound barriers, but there are some significant disadvantages of sound barriers: due to noise diffraction, its effect is limited; the effect on high-rise buildings or deep valley environments is limited; Has a strong visual impact; high installation costs. There are other measures such as shock absorbers and dampers, but the effect is not ideal. In addition, Chinese Patent Application No. 200610023902.2 discloses "a dynamic vibration-absorbing multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01B19/00E01B5/02
Inventor 王平陈嵘肖杰灵赵才友杨荣山徐浩
Owner 朱颖
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