A vertical vibration isolation spherical steel bearing with a disc structure vibration isolator

Abstract

A vertical vibration-isolation spherical steel support with a disc structure vibration isolator, the disc structure vibration isolator is set in the space surrounded by the uppermost seat plate of the vertical spherical steel support, or the vertical spherical steel support In the space surrounded by the lowest seat plate, or between any two adjacent seat plates of the vertical spherical steel support, the disc structure vibration isolator is an axisymmetric structure, so that the side of the disc structure vibration isolator There is a deformation gap between the inner side walls of the seat plate at the position. This patent is based on the spherical steel support, by adding a disc structure vibration isolator with vibration isolation function, so that it forms an upper and lower series connection with the support. Structure, the overall vertical stiffness of the support is appropriately reduced, and the vertical fundamental frequency is far away from the main frequency of the vibration of the upper structure of the support, so as to realize the vertical vibration isolation function.

Description

technical field [0001] The invention belongs to the technical field of bridge structures or buildings, in particular to a vertical vibration-isolation spherical steel bearing with a disc structure vibration isolator. Background technique [0002] The environmental vibration caused by rail transit trains interferes with people's daily life, can also damage buildings, affect the normal operation of precision machine tools and instruments, and cause equipment accidents. In engineering, there are mainly three ways to achieve the vibration and noise reduction of rail transit, that is, reducing the intensity of the vibration source, weakening the vibration transmission and building vibration isolation. The control measures to reduce the vibration intensity of the vibration source and weaken the vibration transmission mainly include: including floating plates, elastic support blocks, high elastic fasteners, ballast pads, rubber pads under rails, rubber pads under iron pads, rails a...

AI Technical Summary

Problems solved by technology

The disadvantage of the above-mentioned vibration isolation bearings is mainly the rubber aging problem of rubber bearings. Based on the actual production status of domestic rubber bearings and the long-term load of rail traffic, the fatigue life of bridge vibration isolation bearings is a difficult problem to solve

Spherical steel bearings have been widely used in railway and rail transit bridges at present, and have the advantages of high bearing capacity, flexible rotation, good durability, and long service life, but spherical steel bearings with vertical vibration isolation function are blank at home and abroad

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