Rotary damper

Abstract

The invention discloses a rotary damper. The rotary damper comprises a mounting structure and an energy consumption structure, wherein the mounting structure comprises a first mounting part and a second mounting part which are spaced from each other; the energy consumption structure is arranged between the first mounting part and the second mounting part and comprises an energy consumption pipe assembly, a first connecting assembly and a second connecting assembly; the first connecting assembly is connected with the first mounting part and the energy consumption pipe assembly; the second connecting assembly is connected with the second mounting part and the energy consumption pipe assembly; and the first mounting part and the second mounting part move relatively to drive the energy consumption pipe assembly to be subjected to torsional deformation. The rotary damper is based on a torsional energy consumption mechanism, energy consumption can be realized by fully utilizing excellent plastic deformation performance of a metal material when the energy consumption pipe assembly is subjected to torsional deformation, the energy consumption pipe assembly is in a pure torsional stress state during working, a uniform shear stress field exists in the energy consumption pipe assembly, the situation that the bearing capacity and the fatigue performance are affected due to local buckling is not prone to occur, and the working stability and reliability are guaranteed.

Description

technical field [0001] The invention relates to the technical field of building structure energy dissipation components, in particular to a rotary damper. Background technique [0002] Under the action of earthquakes, traditional structures generate energy through the plastic deformation of the components themselves, and convert the kinetic energy input by the earthquake into the plastic strain energy of the components themselves. In order to enhance the energy-dissipating capacity of the structure and reduce the damage of components, in the existing technology, energy-dissipating devices are installed in the structure to absorb earthquake energy, and the energy-dissipating and damage are concentrated on the energy-dissipating devices themselves, thereby reducing the damage of other components. [0003] At present, the energy dissipation devices on the market can be roughly divided into the following two types according to the deformation direction: axial type and shear type...

AI Technical Summary

Problems solved by technology

Due to the rotational deformation of joints under earthquake action, traditional energy dissipation devices are limited by the deformation direction and are difficult to improve the rotational performance of joints

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