A vibration-isolation bearing with viscous damper and frequency conversion curved surface ball

Abstract

The invention belongs to the field of vibration isolation technology, and in particular relates to a frequency conversion curved ball vibration isolation support with a viscous type damper. The corresponding surfaces of the lower support plate are respectively provided with frequency conversion concave surfaces, and the frequency conversion concave surfaces of the upper support plate and the lower support plate correspond to each other in a group along the up and down direction, and metal rollers are arranged between each group of frequency conversion concave surfaces. ball. Compared with the traditional circular arc or ellipsoidal surface rolling ball vibration isolation bearing, the frequency conversion concave surface of the present invention has a better vibration isolation effect; the viscous damper increases the energy dissipation capacity for the rolling ball vibration isolation bearing and solves the problem of traditional rolling ball friction Due to the low rolling friction and poor energy consumption of the pendulum bearing, and the fact that the viscous damping force is related to the speed, the ball bearing has better self-resetting work. In addition, the sides of the lower support plate are respectively limit baffles to prevent the upper support plate from detaching, which solves the problem that the upper support plate of the traditional ball bearing is easy to overturn under large displacement.

Description

technical field [0001] The invention belongs to the technical field of shock isolation, and in particular relates to a frequency conversion curved ball shock isolation support with a viscous damper. Background technique [0002] The research and development of rolling ball isolation bearings can be traced back to the 19th century. In 1870, Touaillon invented a rolling ball placed in a bearing plate with spherical concave surfaces on the upper and lower sides. The isolation principle of the support is similar to that of the friction pendulum isolation support. The friction surface is used to extend the natural period of the structure, which can greatly reduce the dynamic amplification effect caused by the earthquake. The generated friction consumes seismic energy. Due to the small rolling friction coefficient, the energy dissipation capacity of the ball pendulum support itself is limited, and the support is prone to overturning, causing the ball to roll out of the bottom plat...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems, the object of the present invention is to propose a viscous damper frequency conversion curved ball vibration isolation bearing, which aims to overcome the poor vibration isolation effect and energy dissipation capacity of the traditional rolling ball vibration isolation bearing. Weak, easy to overturn, complex structure and other shortcomings

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