Connecting rod mechanism type variable friction self-resetting damper

Abstract

The invention discloses a connecting rod mechanism type variable friction self-resetting damper. The variable-friction self-resetting damper comprises two driving rods, four driven rods, eight pairs of friction discs, high-strength bolts and a disc spring set formed by folding / folding. And the four driven rods are respectively connected with the two driving rods to form a rotatable parallelogram connecting rod mechanism. And a plurality of pairs of variable slopes are arranged in the friction disc, so that the friction force is continuously changed. The inner friction discs are welded to the two sides of the driving rod, and the outer friction discs are welded to the inner side of the driven rod. Belleville springs which are located on the outer sides of the driven rods and located between the high-strength connecting bolts and formed in an overlapped / folded mode generate pre-pressure for the variable slope surfaces under the action of bolt pre-tightening force so that the variable slope surfaces can reset automatically. According to the self-resetting variable friction damper, energy consumption and lossless recovery of the structure under small and medium earthquakes can be achieved, and the self-resetting variable friction damper has good self-resetting capacity under large earthquakes. The self-resetting variable friction damper is simple in structure, convenient to construct and install and capable of saving manufacturing cost, and has wide engineering application prospects.

Description

technical field [0001] The invention relates to the technical field of anti-seismic technology of building structure engineering, in particular to a link mechanism type variable friction self-resetting damper. Background technique [0002] Building structures often have large residual deformations after being subjected to earthquakes. How to reduce the residual deformations of structures under earthquakes or even to avoid residual deformations will play an important role in reducing the impact of earthquakes on structures and ensuring structural safety. Therefore, the self-resetting of the structure has become an important means to solve the large residual deformation of the structure. [0003] At present, although the existing self-resetting viscous dampers and self-resetting metal yield dampers can make the structure have good self-resetting ability under the action of earthquakes, the damping force generated by the self-resetting viscous damper is related to the speed. O...

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