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High-efficiency damping backing plate

A vibration-damping pad and high-efficiency technology, which is applied in roads, tracks, buildings, etc., can solve problems such as high natural frequency, poor dimensional stability, and large dynamic/static stiffness ratio of the vibration-damping pad, so as to ensure safety, geometric Small dimensional change rate, widening the application range

Inactive Publication Date: 2012-05-16
BEIJING ZKYT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency vibration-damping backing plate to overcome the shortcomings of the existing vibration-damping backing plate with large dynamic / static stiffness ratio, high natural frequency and poor dimensional stability during use, thereby further improving the vibration-damping effect

Method used

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Embodiment Construction

[0019] The raw materials used in this patent are thermoplastic high-performance polyester elastomer compounding materials, which can be purchased as ready-made products by manufacturers. This patent is only to inject the above-mentioned raw materials in a mold by injection molding, and process them into products of predetermined structure. There is no special requirement for the production equipment of this product, and known equipment is sufficient.

[0020] Please see figure 1 , which is a cross-sectional view of the structure of this patent, a hollow prism a and a solid prism b are integrally formed on the upper and lower sides of the backing plate, the upper and lower sides are misaligned with each other, and four hollow prisms surround one solid prism.

[0021] Please see figure 2 , is a partial enlarged view of the section view. The upper surface of the solid prism b is higher than the upper surface of the hollow prism a, and its height difference is Δh. Changing the s...

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Abstract

The invention relates to a high-efficiency damping backing plate which a unique structure and two bearing modes include a basic bearing mode and an additional bearing mode. When under dynamic loading, the high-efficiency damping backing plate adopts the basic bearing mode to bear, uses comprehensive effects of stretching, shearing, deflecting and appropriate compression deformation to provide elasticity and has low natural frequency, low dynamic / static stiffness ratio, appropriate damping ratio and good dynamic elasticity. Under accidental circumstances, when dynamic vertical load increases suddenly and exceeds the safety threshold, the high-efficiency damping backing plate automatically adopts the additional bearing mode to bear, and the stiffness of supporting points increases automatically and nonlinearly to be 2 to 3 times of the original stiffness, thus the safety reliability is improved. The high-efficiency damping backing plate can be used for the straight section and the bended section of the rail for transportation.

Description

technical field [0001] The invention relates to an elastic backing plate for vibration damping, in particular to a high-efficiency vibration-damping backing plate used in conjunction with a fastener system in rail transit. Background technique [0002] At present, there are many types of vibration-damping backing plates used in conjunction with the fastener system in the track structure of rail transit, including high-elastic dots, groove structures, and truss structures. Some models provide elasticity and some use compression. Deformation provides elasticity, and some use flexural deformation to provide elasticity. The natural frequency of these backing plates is between 10-20Hz, the damping ratio is between 0.05-0.1, and the dynamic / static stiffness ratio is between 1.40-1.60. Below 7-8 decibels. [0003] Due to the high natural frequency and relatively large dynamic / static stiffness of the existing vibration-damping pads, the vibration-damping effect is not very ideal. I...

Claims

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Application Information

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IPC IPC(8): E01B9/68
Inventor 杨秉新章其忠李凯
Owner BEIJING ZKYT TECH CO LTD
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