Ball-type radial protection bearing device that automatically eliminates the gap between the inner and outer rings of rolling bearings

Abstract

The invention relates to the technical field of auxiliary bearing devices, in particular to a ball type radial auxiliary bearing device for automatically eliminating a gap between an inner ring and an outer ring of a rolling bearing. A radial auxiliary bearing comprises a one-way sleeve, baffles, balls, an annular connecting piece and the rolling bearing. According to the auxiliary bearing device, the radial auxiliary bearing can automatically eliminate the gap between the inner ring and the outer ring of the rolling bearing after a maglev bearing system fails and a rotor falls off, so that impact and vibration on the rolling bearing after the rotor falls off are eliminated, the reliability and the safety of the auxiliary bearing are improved, and the requirement of the high-speed maglev bearing system can be met.

Description

technical field [0001] The invention relates to the technical field of bearing protection devices, in particular to a ball-type radial protection bearing device for automatically eliminating the gap between inner and outer rings of rolling bearings. Background technique [0002] In the magnetic suspension bearing system, a set of protective bearings (also known as auxiliary bearings, spare bearings, holding bearings or emergency bearings) is generally required as a temporary support in case of system power failure, overload, control system failure or failure. The two-way rolling type automatically eliminates the radial clearance protection of the inner ring of the rolling bearing. The bearing can bear the load in the radial direction to ensure that the high-speed rotating rotor does not collide with and rub against the stator part of the system, so as to ensure the safety and reliability of the entire system. The traditional protective bearing design is generally to assemble...

AI Technical Summary

Problems solved by technology

At present, there is a method of covering the circumference of the rotor assembly with rolling bearings, and after the rotor assembly falls, the movement of the peripheral rolling bearings can eliminate the gap, but its structure is very complicated, and 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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