Multistage variable-damping damper

Abstract

The invention provides a multistage variable-damping damper. The multistage variable-damping damper comprises a damping mechanism, wherein the damping mechanism comprises a damping part, the damping part comprises a first relative sliding piece and a second relative sliding piece, the first relative sliding piece and the second relative sliding piece can slide relatively, an initial relative position and a limiting relative position exist between the first relative sliding piece and the second relative sliding piece, a magnet is arranged on the first relative sliding piece, an electric conductor is arranged on the second relative sliding piece, the electric conductor is tangent to the magnetic field of the magnet in the sliding process of the first relative sliding piece and the second relative sliding piece, and the magnetic field intensity induced by the electric conductor in the initial relative position is smaller than that induced by the electric conductor in the limiting relativeposition. According to the multistage variable-damping damper, the damping of the first relative sliding piece and the second relative sliding piece is increased in the sliding process, so that the multistage damping effect is achieved, and good resistance is achieved for vibration (caused by wind power) and shaking (caused by an earthquake).

Description

technical field [0001] The invention relates to a passive anti-vibration or shock building component, in particular to a multi-stage variable damping damper. Background technique [0002] The purpose of the tuned mass damper is to achieve the purpose of reducing the energy input from external forces to the main structure by transferring some of the energy of the structural vibration to the auxiliary mass system fixed in a simple form or connected to the main structure. It is an energy dissipation and vibration damping device that absorbs the vibration energy of the main structure by using the mass spring damping system attached to the main structure to achieve the purpose of vibration reduction. [0003] However, a large number of engineering practices have shown that in the case of super strong winds, rare earthquakes or super large earthquakes, when the slider of the tuned mass damper produces large deformation, it is easy to exceed the preset range, causing the mass block...

AI Technical Summary

Problems solved by technology

[0003] However, a large number of engineering practices have shown that in the case of super strong winds, rare earthquakes or super large earthquakes, when the slider of the tuned mass damper produces large deformation, it is easy to exceed the preset range, causing the mass block to hit the main structure Entering the locked state, causing eccentric adverse load effects on the main structure

However, the measurement range of the mass block is often limited by the surrounding building conditions and cannot be made large enough. Therefore, how to effectively reduce the displacement of the mass block of the tuned mass damper without affecting the shock absorption effect of the mass block has become a research direction.

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