Stiffness changing protective device with a laminated rubber bearer

Abstract

The invention relates to a stacking rubber supporting rigidity variable protection device that belongs to structure trembling insulated and libration control technology field. The device includes fixed box body, stacking rubber supporting, spring, plugs, slot, rolling supporting and screw. The plugs incorporate with the stacking rubber supporting. The slot connects to the series connected spring group that is fixed on the side of the fixed box body. The device has the advantage of quick response speed, and can adapt different rigidity demand. And it is simple structure, small volume and no energy consumption.

Description

technical field [0001] The utility model relates to a variable stiffness protection device for laminated rubber bearings for shock isolation, which belongs to the technical field of structural shock isolation control and vibration control. It is mainly used for the protection of building base isolation devices such as houses and bridges, especially for the isolation technology using laminated rubber bearings as the medium. Background technique [0002] In the design and construction of bridges and building engineering structures, the impact of earthquakes and vibrations on engineering structures must be taken into account. The support is a structural shock isolation device widely used in engineering construction. It not only transfers the weight of the upper structure of the building structure to the lower structure, but also has the function of shock absorption and isolation. [0003] Laminated rubber bearing isolation is a relatively mature engineering isolation technolog...

AI Technical Summary

Problems solved by technology

For economic considerations, the diameter of the laminated rubber bearing cannot be too large, and its horizontal displacement may exceed its deformation limit, resulting in instability

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