Axial protective bearing

Abstract

The invention relates to an axial protective bearing, belonging to the field of a magnetic suspension system. The axial protective bearing comprises a screw (1), an end cover (2), a rolling bearing, a slitting sheath assembly (4), a rotor assembly (5) and a stand (7); the axial protective bearing can bear axial loading; under the centrifugal force effect of the slitting sheath assembly (4), the axial clearance between the rotor assembly (5) and a rolling bearing inner ring (6) is reduced by a slitting section along a radial deformation, simultaneously a suspending beam structure is formed axially, energy generated by vibration and impact mostly is absorbed by utilizing the axial elastic deformation, the structure of the axial protective bearing is simplified greatly, and the service life of the protective bearing is improved.

Description

technical field The invention provides an axial protection bearing and belongs to the field of magnetic suspension bearing systems. Background technique In the magnetic suspension bearing system, in order to ensure the reliability and safety of the system, a set of protective bearings (also called auxiliary bearings, or spare bearings, or emergency bearings) is generally required, one of which is the axial protection bearing axial load The purpose of the bearing is to temporarily support the high-speed rotating rotor in the axial direction when the magnetic suspension bearing fails, so as to protect the magnetic suspension equipment from damage. Since the rotating speed of the magnetic suspension bearing is generally very high, and there is a large axial gap between the rotor assembly and the inner ring of the rolling bearing, the rotor assembly will produce a large impact when it falls onto the protective bearing. The existing protective bearings have poor ability to resi...

AI Technical Summary

Problems solved by technology

The existing protective bearings have poor ability to resist impact, and serious accidents often occur in which the protective bearings burn out and damage the equipment

In the traditional structure, the elastic damper is used to absorb the impact energy due to the axial gap between the rotor assembly and the inner ring of the rolling bearing. The structure is very complicated, and the impact problem is not fundamentally solved.

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