Radial protection bearing device for automatically removing radial clearance of outer ring of rolling bearing

Abstract

The invention discloses a radial protection bearing device for automatically removing a radial clearance of an outer ring of a rolling bearing. The radial protection bearing device comprises a mounting seat, a support seat, the rolling bearing and a rotor assembly, wherein the rolling bearing is connected with the rotor assembly in an interference fit manner, the support seat and the rotor assembly are concentrically arranged, and a proper radial clearance is formed between an inner circle of the support seat and the outer ring of the rolling bearing; the support seat comprises more than two circumferentially and uniformly arranged support seat branch bodies which are all arranged together with the mounting seat in a locating manner by a first locating pin and are all connected into an integrated body by an annular connecting piece through a second locating pin; at least one support seat branch body is provided with a support seat adjusting device; and the support seat adjusting device comprises two groups of elastic connecting pieces for remaining the concentricity of each support seat branch body and the rotor assembly. Therefore, after the rotor assembly falls down, the radial clearance between the outer ring of the rolling bearing and the support seat can be automatically removed, so that the impact and vibration on the rolling bearing are eliminated, and the reliability and safety of the radial protection bearing are improved.

Description

technical field [0001] The invention relates to a radial protection bearing device, in particular to a radial protection bearing suitable for bearing radial loads in a high-speed magnetic suspension bearing system. The radial protection bearing can automatically eliminate the repeated impact on the protection bearing after the rotor assembly falls. and collision, belonging to the field of magnetic suspension bearing system. Background technique [0002] In the magnetic suspension bearing system, in order to ensure the safety and reliability of the system, a set of protective bearings (also called retaining bearings, spare bearings, auxiliary bearings or emergency bearings) is generally required, one of which is the radial bearing that only bears radial loads. Bearing protection, its main purpose is to temporarily support the high-speed rotating rotor in the radial direction when the magnetic suspension bearing system fails, so as to protect the magnetic suspension bearing sy...

AI Technical Summary

Problems solved by technology

At present, the commonly used method is to cover the circumference of the rotor assembly with rolling bearings, and after the rotor assembly falls, the movement of the surrounding rolling bearings can eliminate the gap, but its structure is very complicated, and at the same time, it only supports the drop of the rotor assembly when it rotates in one direction. And because the diameter of the rotor is much larger than that of the peripheral rolling bearing, the rotation speed of the peripheral rolling bearing after falling is much higher than its own limit speed, which does not fundamentally solve the problem

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