Self-return shearing type lead damper

Abstract

The invention provides a self-return shearing type lead damper. The self-return shearing type lead damper comprises a barrel body, an inner rod which is coaxially sleeved by the barrel body, and an energy dissipating device which connects the barrel body to the inner rod, wherein a buckling-preventing sleeve further sleeves the inner rod; the inner rod is connected to the energy dissipating devicethrough the buckling-preventing sleeve; the barrel body is of a hollow cylindrical structure with a sealed end and an opening end; the barrel body comprises a barrel wall and a barrel bottom cover plate mounted at one end of the barrel wall; one end of the inner rod is connected to the barrel bottom cover plate; and the other end of the inner rod extends out of the opening end of the barrel body.The self-return shearing type lead damper has very good returning ability while having relatively high energy dissipating ability, can effectively reduce vibration of the structure, reduces residualdeformation of the vibrated structure, and greatly improves safety of the structure; and a supplementary energy dissipating ring is used for preventing a primary energy dissipating ring from unstableenergy dissipation due to shearing area reduction under repeated load, so that energy dissipating stability of the damper is improved.

Description

technical field [0001] The invention belongs to the fields of civil construction and electrical engineering, and relates to a self-resetting shear type lead damper. Background technique [0002] The cost of electrical equipment is expensive, and the natural frequency of porcelain column structures in power systems such as circuit breakers and isolating switches is between 1 and 10 Hz, the damping ratio is small, and the earthquake vulnerability is high. With the emphasis on air pollution and the rational allocation of resources, the development of UHV projects in my country has become stronger and stronger. Compared with high-voltage electrical equipment, UHV electrical equipment has a higher center of gravity, height and quality, and its seismic performance is facing a greater challenge. Serious challenges. [0003] At present, most of the porcelain column electrical equipment adopts metal dampers and wire rope dampers. The residual deformation of the structure will greatl...

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned deficiencies and defects of the prior art, the purpose of the present invention is to provide a self-resetting shear type lead damper to solve the technical problems of large residual deformation and poor stability of the device in the prior art

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