Displacement rotation amplifying type shape memory alloy damper

Abstract

The invention discloses a displacement rotation amplifying type shape memory alloy damper which comprises superelastic shape memory alloy wires, a ball screw threaded rod, a ball screw nut, a guide supporting seat, a fixed retaining block, a ball bearing, clamps, a fixing plate, a sleeve, a left end cap, a right end cap, connecting bolts and fastening bolts. The ball screw threaded rod serves as a push-pull rod to be supported through the guide supporting seat and only be in push-pull motion axially, the ball screw nut is supported and limited by the ball bearing and can only be in rotating motion, and the superelastic shape memory alloy wires penetrate space between a through hole of the ball screw nut and a through hole of the fixing plate and are clamped and fixed through the clamps. A ball screw is utilized to convert axial linear motion into rotating motion so as to amplify displacement stroke of the shape memory alloy wire, energy-consuming effect is improved remarkably, and the displacement rotation amplifying type shape memory alloy damper has the advantages of self-resetting, simple structure, safety, reliability, convenience for actual application and the like and can be applied to seismic resistance and vibration reduction of structures like high-rise buildings and large-span bridges.

Description

technical field [0001] The invention belongs to the technical field of anti-seismic and vibration reduction of engineering structures, and in particular relates to a novel passive energy-dissipating damper mainly used for vibration control of civil structures such as high-rise buildings, long-span bridges, and ocean platforms. Background technique [0002] Earthquakes, strong winds and other external excitations make civil engineering structures prone to large vibrations, which pose a serious threat to their safety and comfort. In the face of various vibration disasters that occur in the real environment, it is particularly important to improve the anti-seismic, wind-resistant and disaster-resistant performance of engineering structures. People have been exploring various methods to effectively reduce and suppress the damage caused by vibration responses to engineering structures. . In recent years, various dampers developed by using viscoelastic materials, viscous fluids a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low energy consumption of the existing shape memory alloy damper, and to provide a displacement rotation amplification type shape memory alloy damper, which is a vibration damping energy consumption capacity, high efficiency, Passive energy-dissipating dampers with self-resetting, simple structure, and practical engineering applications are mainly used for vibration control of structures such as high-rise buildings, long-span bridges, and offshore platforms.

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