Manual type bearing protection device

Abstract

The invention relates to a magnetic levitation bearing system, in particular to a manual type bearing protection device. The manual type bearing protection device comprises a rotor, two bearing seats,two groups of bearing protection assemblies and a manual driving assembly; two ends of the rotor are in a circular truncated cone shape; the two bearing seats are arranged at the two ends of the rotor, and the two ends of the rotor extend into the bearing seats; the two groups of the bearing protection assemblies are symmetrically and slidably arranged in the bearing seats, cone-shaped holes which are matched with the ends of the rotor are formed in the bearing protection assemblies; and the manual driving assembly drives the bearing protection assemblies to axially move close to each other until the bearing protection assemblies are in contact with the rotor. The manual type bearing protection device can temporarily support the rotor when a magnetic bearing system fails, can manually protect the rotor, prevents damage caused by falling of the high-speed rotor, and improves the security of the system.

Description

Technical field [0001] The invention relates to a magnetic suspension bearing system, in particular to a manual protective bearing device. Background technique [0002] The magnetic bearing system will lose the load-carrying capacity of the rotor in the event of a power failure or overload, so it is necessary to install a set of protective bearing devices to provide temporary support for the lost rotor to prevent the high-speed rotating rotor from falling on the stator to ensure the entire magnetic levitation The security of the system. At present, the protection bearings used in the magnetic levitation system mostly use traditional rolling bearings, but in order to make the magnetic levitation system work normally, there is a fixed gap between the rotor and the inner ring of the rolling bearing. Therefore, when the rotor falls, since the gap between the rotor and the bearing cannot be eliminated, the bearing will be subject to great impact and vibration from the rotor, resultin...

AI Technical Summary

Problems solved by technology

Therefore, when the rotor falls, since the gap between the rotor and the bearing cannot be eliminated, the bearing will be greatly impacted and vibrated by the rotor, resulting in damage to the protective bearing

However, there are still many deficiencies in some new protective bearings that can eliminate gaps. Their structures are complex and can only eliminate radial gaps. The reliability is not high. If the gaps cannot be eliminated in time, the entire magnetic bearing system will be damaged.

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