Three-dimensional vibration isolation device for rail transit

Abstract

The invention relates to the technical field of vibration and noise control, and discloses a three-dimensional vibration isolation device for rail transit, which comprises an upper connecting plate, a vertical vibration isolation unit, a middle working plate, a horizontal vibration isolation unit and a lower connecting plate sequentially arranged from top to bottom, wherein the vertical vibration isolation unit comprises a box body, a first rubber layer, a spacing plate and a second rubber layer, the first rubber layer, the spacing plate and the second rubber layer are sequentially and fixedly connected in the box body from top to bottom, an opening is formed in one end of the box body, the upper connecting plate is fixed to the opening in a covering mode, and a plurality of vibration isolation springs are fixedly arranged on the first rubber layer and the second rubber layer. And the plurality of vibration isolation springs are coaxially arranged on the first rubber layer or the second rubber layer. Micro vibration induced by rail transit can be effectively reduced, the problem of vibration noise of the upper cover structure of the rail transit can be effectively solved, and a good vibration isolation effect can be achieved for multiple types of vibration sources and horizontal and vertical multi-dimensional vibration input.

Description

technical field [0001] The invention relates to the technical field of vibration and noise control, in particular to a three-dimensional vibration isolation device for rail transit. Background technique [0002] Earthquake is a complex three-dimensional space movement, including movement in the horizontal direction (X, Y direction) and vertical direction (Z direction). Caused by the horizontal seismic action, the vertical seismic acceleration is only equivalent to 0.65 of the horizontal acceleration. However, a large number of seismic records show that the damage caused by the vertical component of earthquake action to buildings cannot be ignored, especially in high intensity areas and epicentral areas, where the vertical seismic component is extremely obvious. On the other hand, the development of rail transportation caused The impact of environmental vibration on people's work and life also requires measures to isolate vertical vibration. Therefore, the research on three...

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Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to provide a three-dimensional vibration isolation device for rail transit to solve the problem that the existing three-dimensional vibration isolation device is difficult to effectively reduce the vibration and noise induced by the subway and transmitted to the upper cover structure

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