A quadrilateral rotational friction damper

Abstract

The invention relates to a quadrilateral pivoting friction damper and belongs to the technical field of civil engineering. The quadrilateral pivoting friction damper comprises a first rotating member, a second rotating member, a third rotating member, a fourth rotating member, node plates, connecting rods, connecting pieces, pretightening force bolts, fixing bolts and friction plates. Every two rotating members are hinged through one pretightening force bolt, the four rotating members form a quadrangle, the first rotating member is provided with two sliding grooves, the second rotating member is provided with two sliding grooves, one fixing bolt is installed in each sliding groove, the first rotating member and the second rotating member are two rotating members parallel to each other, and the friction plates are arranged at the hinged position of every two rotating members. One end of each connecting rod is hinged to one node plate, the other end of the connecting rod is hinged to one connecting piece, the other end of the connecting piece is fixed through the fixing bolt in the corresponding sliding groove, and when the quadrilateral pivoting friction damper is not subjected to an external force effect, intersection points of axes of the four connecting rods coincide with the centroid of the quadrangle.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to a quadrilateral rotational friction damper. Background technique [0002] When the building is shaken, it will have inter-story displacement under the action of the vibration force, resulting in an inter-story displacement angle, which will cause the building to deform. When the inter-story displacement angle is large, the building will be damaged. At present, it is often used The method of enhancing the anti-seismic performance of the building's own structure or adopting the method of installing a damper in the building can reduce the damage to the building caused by the vibration force. [0003] Commonly used dampers are divided into metal dampers, liquid viscous dampers, friction dampers, viscoelastic dampers, etc. Metal dampers have the advantages of stable performance, not affected by ambient temperature, simple structure, low cost, and easy replacement. However, ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing sliding friction damper cannot meet the shock absorption requirements due to the limitation of its range, the present invention provides a quadrilateral rotational friction damper. The quadrilateral rotational friction damper includes: four rotating parts, They are respectively the first rotating part, the second rotating part, the third rotating part and the fourth rotating part, four gusset plates, four connecting rods, four connecting parts, four pre-tightening bolts, four fixing bolts and multiple a friction plate;

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