Low frequency vibration isolation earthquake-proof rack

Abstract

The invention relates to a low-frequency, vibration isolation and shakeproof skid bed for vibration isolation, shakeproof, buffering, impact resistance and structural noise reduction in shipping, vehicle, building, bridge, engineering machinery and various electromechanical appliances and engineering facilities. The invention is characterized in that a spiral elastomer made of a plurality of stainless steel twisted wires in a symmetrical or antisymmetric structure mode, a multidirectional elastic position-limit mechanism, a metal structural member, an angle switching rack and a mounting base are connected into a whole by screw threads, which has the properties of multidirectional nonlinear softened rigidity and dry damping and the function of displacement limitation. The low-frequency, vibration isolation and shakeproof skid bed is suitable for the control of large energy input (such as earthquakes, explosion impact, ocean wave, large low-frequency displacement interference, etc) in any direction, meets the needs of multidirectional low-frequency vibration isolation, buffering, shakeproof and large displacement dynamic stability in engineering and has a safe and reliable structure, long life-span, strong adaptive capacity to environment and low maintenance cost.

Description

technical field [0001] The invention relates to a low-frequency vibration-isolation and anti-seismic platform, specifically for vibration isolation, anti-seismic, buffering, anti-shock and reducing structural noise of ships, vehicles, buildings, bridges, engineering machinery, various electromechanical equipment and engineering facilities . Background technique [0002] How to ensure the safe operation of engineering equipment and facilities under the interference of external large-energy vibration and shock (such as low-frequency multi-directional large-displacement seismic waves or explosion shock waves) has always been a technical problem of concern to the engineering community. The response amplitude and the system stability problem under the condition of large displacement. [0003] In the prior art, vibration isolators (shock absorbers) and buffers are the most commonly used to elastically support the dynamic system. This is more effective for medium and high frequen...

AI Technical Summary

Problems solved by technology

The air spring is made of air capsules made of rubber, which can meet the requirements of low-frequency vibration isolation, but the biggest problem is how to solve the problems of gas leakage in the capsule and the physical strength and life of the rubber material, and the capsule has a high transient internal pressure strength. It is difficult to realize the requirements; the multi-layer steel plate rubber shock absorber also has the physical strength and life limit of the rubber and is heavy, and it is also difficult to achieve the low-frequency characteristic requirements; Poor adaptability to impact interference, prone to colloidal fracture, these defects directly affect the stability and reliability of system operation

Since the operating characteristics of engineering equipment or facilities are long service life, high reliability and convenient maintenance, once the vibration isolation control product used is damaged or ineffective, it will cause great harm, and it is even difficult to be discovered in time

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