Double-layer three-dimensional cultural relic showcase shock isolation device

Abstract

The invention discloses a double-layer three-dimensional cultural relic showcase shock isolation device which comprises a three-dimensional shock isolator (1), an X-direction sliding platform (2), a Y-direction sliding platform and a top plate (4). By means of the double-layer three-dimensional cultural relic showcase shock isolation device, lower portion three-dimensional shock isolation controland upper portion horizontal sliding control are adopted, earthquake energy can be reduced in all directions from two levels and three dimensions, meanwhile, high level recovery force is provided, andthe displacement is controlled; and in addition, good vertical rigidity and horizontal lateral stiffness resistance are achieved, the large vertical bearing force requirement and the horizontal overturning preventing requirement can be met, the beneficial effects of torsion resistance, overturning resistance and the like are achieved, the structure of the device is stable, and maintenance and adjustment are convenient.

Description

technical field [0001] The present invention relates to the field of shockproof and shock-isolation technology, especially the field of shock-proof and shock-isolation technology for display cabinets for cultural relics, and more specifically, to a double-layer, three-dimensional shock-isolation device for display cabinets for cultural relics. Background technique [0002] Cultural relics are precious historical and cultural heritage, an effective carrier of the civilization level of a country and a nation, representing the history and heritage of the country, showing the origin and demeanor of the nation, and have a very important significance and role in the construction of the two civilizations . Therefore, the response of cultural relics showcases under the action of earthquakes will directly affect the degree of damage to cultural relics. Under normal circumstances, museum cultural relic display cabinets are made of steel and float on the ground surface. They have the ...

AI Technical Summary

Problems solved by technology

[0004] Cultural relics display cabinets need regular inspections and cultural relics loading and unloading, so the seismic isolation device needs a strong lateral stiffness when loading and unloading, and the above-mentioned devices have low lateral stiffness and cannot meet the seismic isolation requirements

[0005] The cultural relics display cabinet has a large self-weight, and long-term action on the device will cause creep and aging of the device, affect the physical parameters of the device, reduce the shock isolation performance, and fail to meet the shock isolation requirements

[0006] The self-weight of the showcase is large, the inertial force under the earthquake is large, the horizontal lateral stiffness is low, the horizontal displacement is not easy to control, and it is prone to excessive displacement or even overall overturning, which cannot meet the requirements of seismic isolation

[0007] Ordinary cultural relics shock isolation devices have small damping, weak energy dissipation capacity, relatively large acceleration conduction, and are prone to structural damage to the showcase, which cannot meet the shock isolation requirements

[0008] The height-to-width ratio and length-to-width ratio of cultural relics display cabinets are large, and their own torsional rigidity is small. Under the action of earthquakes, cultural relics display cabinets are prone to overall structural damage caused by their own torsion, and the above device is not enough for the overall torsional rigidity of cultural relics display cabinets. It plays a strengthening role and cannot meet the requirements of shock isolation

[0009] Traditional seismic isolation devices cannot meet the two requirements of good horizontal lateral stiffness and increased natural vibration period at the same time, and cannot meet the seismic isolation requirements

[0010] Traditional seismic isolation devices only consider two-dimensional seismic isolation but not three-dimensional seismic isolation, ignoring vertical seismic isolation is a major cause of cultural relics damage

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