Dynamic vibration-absorbing multilayer damping-constraining steel rail silencer

A dynamic vibration absorber, restrained damping technology, applied in the direction of rails, tracks, roads, etc., can solve the problems of small damping and poor effect of wood chipboards and blankets, and achieve the effect of convenient construction, convenient installation, low-frequency vibration and noise control

Inactive Publication Date: 2006-07-26
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

"This product sticks sawdust boards, blankets, etc. on the rails. The principle adopted is basically damping and vibration absorption. Althoug

Method used

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  • Dynamic vibration-absorbing multilayer damping-constraining steel rail silencer
  • Dynamic vibration-absorbing multilayer damping-constraining steel rail silencer

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention is layered in sequence, and the structure from the inside to the outside is: high elastic energy consumption material layer 1, first mass layer 2, first damping layer 3, first constraining layer 4, second damping layer 5, second The constrained layer 6, the third damping layer 7, the third constrained layer 8 and the protective layer 9. Among them, the high elastic energy consumption material layer 1 constitutes the distributed elastic elements of the dynamic vibration absorber. The first mass layer 2, the first damping layer 3, the first constraining layer 4, the second damping layer 5, the second constraining layer 6, the third The damping layer 7, the third constraining layer 8 and the protective layer 9 together constitute the distributed mass of the dynamic vibration absorber. The distributed elastic element and the distributed mass form a set of distributed parameter dynamic vibration absorbers, which can absorb the en...

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Abstract

The invention relates to a dynamic absorber multilayer restrict damping steel rail muffler, belonging to the noise control technique. Wherein, from inner to outer, it comprises the high-flexibility energy-consumption material layer, the first quality layer, the first damping layer, the first restrict layer, the second damping layer, the second restrict layer, the third damping layer, the third restrict layer, and the protective layer. Wherein, the high-flexibility energy consumption material layer forms the distributed flexible elements of said dynamic absorber; the first quality, three damping layers and the restrict layer form the distributed quality of dynamic absorber; the distributed flexible element and the distributed quality form a group of distributed parameters; and said distributed quality also be used as three layers of damping resistance to reduce the vibration deformation of distributed quality. The invention can be mounted at the rail waist of noise sensible area of railway or city traffic roads, to reduce the noise of wheel and rail especially the noise generated by the brake and friction.

Description

Technical field [0001] The invention relates to a muffler in the technical field of noise control, in particular to a dynamic vibration absorption multi-layer restrained damping steel rail muffler. Background technique [0002] The problem of noise control has received more and more attention. Environmental noise is directly related to people's quality of life, and even has an important impact on people's physical and mental health. The noise of wheel and rail transit, especially urban rail transit, has become an important source of pollution affecting the acoustic environment of the area along the line. For medium and low-speed wheel-rail transportation lines with speeds below 120km / h, wheel-rail noise is the most important part of rail traffic noise. In order to reduce wheel-rail noise, researchers and engineers have proposed technologies such as elastic wheels, wheel damping patches, rail elastic damping pads, elastic fasteners, floating plates, etc., respectively, applying th...

Claims

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Application Information

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IPC IPC(8): E01B19/00E01B5/02
Inventor 蒋伟康周建南严莉
Owner SHANGHAI JIAO TONG UNIV
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