Vibration isolation device

Abstract

The invention relates to a vibration isolation device. The vibration isolation device comprises an upper connection plate (1), a lower connection plate (2) and a vibration reduction and isolation matching assembly (3); the vibration reduction and isolation matching assembly (3) is arranged between the upper connection plate (1) and the lower connection plate (2); the vibration reduction and isolation matching assembly (3) comprises a middle connection plate (31) and a hollow cylindrical supporting piece (32); the middle connection plate (31) is in sealing connection with the upper connection plate (1); a cavity (10) is formed between the middle connection plate (31) and the upper connection plate (1); the cylindrical supporting piece (32) is vertically arranged in the vibration reduction and isolation matching assembly (3); the open end of the cylindrical supporting piece (32) communicates with the cavity (10), so that the interior of the cylindrical supporting piece communicates withthe cavity (10); and the cavity (10) and the cylindrical supporting piece (32) are inflated with compressed gas. Compared with the prior art, the vibration isolation device has a good vibration isolation effect.

Description

technical field [0001] The invention relates to the field of construction engineering, in particular to a vibration isolation device. Background technique [0002] Transportation tools, such as subways and high-speed rails, bring convenience to people's lives, but also bring a series of vibration problems. For example, during the operation of subways and high-speed rails, multi-dimensional environmental vibrations will occur in the soil layer. After the vibrations are transmitted to nearby rail transit stations, industrial plants, civil buildings and other buildings, it will affect the indoor comfort and the normal use of precision instruments. Fatigue damage occurs to the building structure, which affects the safety of the building. [0003] In order to solve the above problems, a variety of vibration reduction and isolation measures have been proposed, such as new tracks for floating slabs, ground barriers, and vibration isolation for building foundations. Among them, th...

AI Technical Summary

Problems solved by technology

Although this kind of simple superposition can meet the requirements of three-way vibration isolation function, but the rigidity against rotation deformation is low, it has no limit function, and the tensile capacity of the support is insufficient, which means that the overturning moment of the superstructure will make the support The safety and stability of the seat is prominent

At the same time, the greatly increased aspect ratio of the support will make it prone to overturning and rolling under the action of a large earthquake, which will cause the overall overturning and collapse of the upper structure

In addition, the vertical compressive bearing capacity of steel springs or bladder air springs is relatively weak, and the bladder air springs can only reach hundreds of kilopascals, which is difficult to meet the vertical bearing capacity of most buildings in my country for vibration isolation bearings need

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