Centripetal protection bearing for magnetic levitation bearing system

Abstract

A centripetal protection bearing for a magnetic levitation bearing system belongs to a magnetic levitation bearing, which comprises an inner ring (1) and an outer ring (2) of one first layer rolling bearing, a switching loop, an inner ring (4) and an outer ring (5) of a second layer rolling bearing, a radial elasticity damper which is constituted by an inner ring (6) and an outer ring (8) of the radial elasticity damper and radial multi-layer corrugated steel with 3-20 layers, a screw (9), an end cap (10), a base (10), and a rotor assembly (12). The rotary speed which is undertaken by one rolling bearing in a traditional structure is changed to undertake by two or two more bearings, which increases the working rotary speed of the bearing. Energy which is generated by vibration and impact is absorbed through doing work by the radial elasticity deformation of the radial elasticity damper and the friction on tangential direction, which raises the life of the protection bearing. The invention can not only be used as a centripetal protection bearing for supporting radial load in the magnetic levitation bearing system, but also be used as a rolling bearing with higher rotary speed, vibration and impact resistance.

Description

1. Technical field [0001] The invention provides a centripetal protection bearing composed of multiple (two or more) rolling bearings and elastic dampers, which can not only increase the working speed of the protection bearing, but also absorb most of the energy generated by vibration and impact, and is suitable for As a centripetal protection bearing bearing radial load in a high-speed magnetic suspension bearing system, it can also be used as a rolling bearing with higher speed, vibration and shock resistance. 2. Background technology [0002] 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 a centripetal 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 sus...

AI Technical Summary

Problems solved by technology

Since the speed of the magnetic suspension bearing is generally very high, the rotor assembly will generate a lot of vibration and shock when it falls on the protective bearing. The main problems at present are the low working speed of the existing protective bearing and the ability to resist vibration and shock. Poor, serious accidents often occur in which the protective bearing burns out and damages the equipment

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