A vibration and noise reduction device with adjustable damping

Abstract

The invention discloses a damping adjustable vibration reduction and noise reduction device, comprising: a damping box, a soft polymer board and an elastic component; wherein, the center of the top plate of the damping box is fixed with an upper fixing plate by bolts, and the center of the damping box The lower fixing plate is symmetrically fixed by bolts on the bottom plate; a polymer soft plate is arranged transversely in the damping box, and the bottom end of the polymer soft plate is connected to the bottom plate of the damping box through a plurality of elastic components. The device utilizes the damping box with elastic parts to reduce damping and high-frequency vibration reduction, the curved viscous inner and outer damping bodies absorb sound and reduce noise, and the impact energy consumption under the action of the inner and outer energy-dissipating ball airflow works together to make the damping possible. The adjustable vibration and noise reduction device exerts excellent vibration and noise reduction performance in a large frequency range. The frequency range of vibration reduction is wide and the noise reduction effect is good. It is suitable for building structures, traffic stations, urban rails and high-speed railways.

Description

technical field [0001] The invention relates to the field of vibration reduction and noise reduction equipment, in particular to an adjustable damping vibration reduction and noise reduction device, which is used in building structures, traffic stations, urban rails and high-speed railways. Background technique [0002] In recent years, the construction of my country's urban subway viaducts has developed rapidly, providing citizens with convenient and comfortable means of transportation. However, the operation of traffic loads such as trains and automobiles in the subway viaduct will cause serious vibration and noise problems, which will adversely affect the life and work of residents in the surrounding buildings. The vibration waveform caused by traffic load is complex and the frequency range is wide, generally 0-80Hz. However, the existing vibration reduction and isolation devices are difficult to meet this requirement and cannot effectively reduce vibration. Some mechanic...

AI Technical Summary

Problems solved by technology

However, the operation of traffic loads such as trains and cars in the subway viaduct will cause serious vibration and noise problems, which will adversely affect the life and work of residents in the surrounding buildings

The vibration waveform caused by traffic load is complex and the frequency range is wide, generally 0-80Hz. However, the existing vibration reduction and isolation devices are difficult to meet this requirement, and cannot effectively reduce vibration. Some mechanical vibration reduction devices even Loud noises seriously affect the lives of residents

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