Cushioning mechanism

Abstract

The invention provides a cushioning mechanism comprising a base, an equal-width cam mechanism, a limiting bracket, a ball screw, two groups of energy dissipaters and energy dissipater fixing bases, wherein the equal-width cam mechanism, the limiting bracket, the ball screw, the two groups of energy dissipaters and the energy dissipater fixing bases are mounted on the base. The equal-width cam mechanism comprises a quadrilateral frame and a cam mounted in the quadrilateral frame. The cam is connected with a nut of the ball screw. The two groups of energy dissipaters are mounted on the energy dissipater fixing bases on the two sides of the equal-width cam mechanism separately. The ends, away from the energy dissipater fixing bases, of the two groups of energy dissipaters are connected with the two sides of the quadrilateral frame separately. The limiting bracket is mounted on the periphery of the equal-width cam mechanism. The cam mechanism performs linear reciprocating motions between the two groups of energy dissipaters under the limit of the limiting bracket. The end, away from the equal-width cam mechanism, of the ball screw is provided with a spring latch assembly used for being connected with a building structure or a bridge structure. The cushioning mechanism is low in cost and has a good damping limiting function.

Description

technical field [0001] The invention relates to the technical field of anti-seismic shock absorption of building structures and bridge structures, and specifically belongs to a kind of shock-absorbing and buffering mechanism of building structures and bridge structures. Background technique [0002] Earthquakes are one of the common natural disasters. Strong earthquakes can severely damage building structures and bridge structures, causing a large number of casualties and economic losses. Seismic isolation technology, as an economical and effective seismic isolation technology, has been widely used in the engineering field. When the isolation structure encounters an extremely rare earthquake, the horizontal displacement of the isolation support is likely to exceed the limit design value, causing major damage and seriously threatening the safety of life and property. Therefore, it is necessary to take necessary buffering and limiting measures for the isolation layer to limit...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of using displacement-related energy dissipators such as frictional energy dissipators or metal yield energy dissipators or using velocity-dependent energy dissipators such as viscous liquid energy dissipators or viscoelastic For the energy dissipator, if the displacement or speed of the energy dissipator is small, it will be difficult to exert effective energy dissipation capacity; if the displacement of the energy dissipator is large, it is necessary to use a large-tonnage and large-stroke energy dissipator, resulting in a dilemma of high cost question

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