Friction pendulous cultural relic shock isolation device adjustable in damping

Abstract

The invention discloses a friction pendulous cultural relic shock isolation device adjustable in damping and belongs to the technical field of shock absorption and shock isolation. The device comprises a bottom plate, a top plate, concave disks, universal balls and a cross damping mechanism. The concave disks and the universal balls are fixed to the opposite surfaces of the bottom plate and the top plate, and the concave disks and the universal balls form contact fit to provide supporting force; the cross damping mechanism is installed between the bottom plate and the top plate, and the bottomplate and the top plate are connected together through the cross damping mechanism; and the cross damping mechanism decomposes the relative motion in any horizontal direction between the bottom plateand the top plate into two motions in the orthogonal directions of the cross damping mechanism and applies damping. According to the friction pendulous cultural relic shock isolation device adjustable in damping, adjustment of the damping volume can be achieved while the integrity of the shock isolation device is ensured, and the shock isolation demands in different occasions can be met.

Description

technical field [0001] The invention belongs to the technical field of shock absorption and shock isolation, and in particular relates to a friction pendulum shock-isolation device for cultural relics with adjustable damping. Background technique [0002] Cultural relics are precious historical and cultural heritage of human beings, with extremely important value, and protection is of great significance. There are a huge number of cultural relics in our country's collections. Except for some traditional anti-seismic methods with limited effect, most of them are in a floating state and are easily damaged in earthquakes. Therefore, the use of seismic isolation devices will play an important role in the anti-seismic safety of cultural relics. Friction pendulum bearing is one of the effective horizontal isolation devices. [0003] Its structure is extremely simple, mainly consisting of a concave disc and a slider to form a friction pair, which is conducive to the reciprocating...

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Problems solved by technology

[0004] When an earthquake strikes, the friction pendulum device can weaken the horizontal vibration transmitted to the upper cultural relics, but because the disc and the slider are separated, it does not have the ability to resist vertical pull-out, especially when subjected to large vertical When the earthquake or the limit horizontal displacement is reached, the components of the device may break away and fail, causing serious damage to cultural relics; in addition, the preset friction coefficient requires high machining accuracy, and the friction coefficient is fixed, so it is difficult to adjust it later.

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