Spherical surface and cylindrical surface friction type support

A bearing and cylinder technology, applied in building components, building structure, earthquake resistance, etc., can solve the problems of poor vibration isolation and shock absorption, achieve good contact, avoid resonance phenomenon, and protect from damage.

Active Publication Date: 2015-09-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that the existing friction pendulum support is prone to resonance and the frequency conversion friction pendulum support has

Method used

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  • Spherical surface and cylindrical surface friction type support
  • Spherical surface and cylindrical surface friction type support
  • Spherical surface and cylindrical surface friction type support

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Experimental program
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specific Embodiment approach 1

[0019] Specific implementation mode one: as Figure 1~6 As shown, the spherical-cylindrical friction bearing of this embodiment includes a cover plate 4, a slider 5, a chute 6 and a connecting steel plate 7, the chute 6 is installed on the upper end surface of the connecting steel plate 7, and the sliding block 5 is located on the sliding In the groove 6, the upper half of the slider 5 is hemispherical, and the center of the lower end of the cover plate 4 is processed with a hemispherical groove matching the slider 5, and the cover plate 4 is supported on the upper surface of the chute 6 by the slider 5 Above, the outline of the left half of the chute 6 is rectangular, the outline of the right half of the chute is semicircular, the left half of the chute 6 is processed with a cylindrical groove 9, and the right half of the chute 6 is processed with a The spherical groove 8 and the arc surface radius of the cylindrical groove 9 are set to be the same as the arc surface radius o...

specific Embodiment approach 2

[0029] Specific implementation mode two: as Figure 2-6 As shown, the radius of curvature of the bottom surface of the slider 5 in this embodiment is consistent with the radius of curvature of the chute 6 . Such a design can make effective contact between the slider 5 and the chute 6, increase the effective friction of the friction pendulum support, improve the sliding energy dissipation capacity, and reduce the stress concentration of the chute 6, reduce collisions, reduce wear, and extend Support life. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0030] Specific implementation mode three: as Figure 2-6 As shown, the spherical radius of the upper hemisphere of the slider 5 in this embodiment is consistent with the radius of the hemispherical groove on the cover plate 4 . Such a design can make effective contact between the slider 5 and the hemispherical groove on the cover plate 4, increase the effective friction of the friction pendulum support, improve the sliding energy dissipation capacity, and reduce the friction of the hemispherical groove on the cover plate 4. Stress concentration reduces collision, reduces wear and prolongs the service life of the support. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a spherical surface and cylindrical surface friction type support and relates to a friction type support. The spherical surface and cylindrical surface friction type support solves the problems that an existing friction swing support is prone to generating resonance, a variable frequency swing support is in point and surface contact for a long time, and consequently the vibration isolation and reduction effect is poor. A sliding groove is formed in the upper end face of a collecting steel plate, a sliding block is located in the sliding groove, the upper half part of the sliding block is in a semispherical shape, a semispherical groove matched with the sliding block is machined in the center of the lower end of the cover plate, the cover plate is supported by the upper end face of the sliding groove through the sliding block, the contour of the left half part of the sliding groove is rectangular, the contour of the right half part of the sliding groove is semicircular, a cylindrical groove is machined in the left half part of the sliding groove, a spherical groove is machined in the right half part of the sliding groove, the radius of the arc surface of the cylindrical groove and the radius of the arc surface of the spherical groove are identical, and the cylindrical groove and the spherical groove are in smooth transition connection to form a complete smooth surface. The spherical surface and cylindrical surface friction type support is used for vibration isolation of a large-span space structure.

Description

technical field [0001] The invention relates to a friction bearing, in particular to a spherical-cylindrical friction bearing used for vibration isolation and shock absorption of building structures. Background technique [0002] Spherical friction pendulum bearing (Friction Pendulum Bearing, FPB) is an effective dry friction slip isolation device, which was first proposed by Zayas et al. at the University of California, Berkeley in 1985. The shock absorption mechanism of the spherical friction pendulum bearing is mainly composed of two parts, one part is that the spherical friction pendulum bearing isolates the structure from the ground or the lower structure, and the vibration period of the structure is extended by using different designs of the sliding surface, thereby effectively reducing vibration. Minimize the structural vibration response caused by earthquakes or other external excitations; the other part is to consume a large amount of seismic energy through the fric...

Claims

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Application Information

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IPC IPC(8): E04B1/98E04B1/36
Inventor 范峰孔德文支旭东孙梦涵
Owner HARBIN INST OF TECH
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