A magnetic fluid double suspension dynamic pressure bearing

Abstract

A magnetic-fluid double-suspension dynamic pressure bearing, including a stepped shaft, screws, first and second small end caps, first and second large end caps, an oil inlet combined gasket, an oil outlet combined gasket, and an oil inlet joint , oil outlet joints, nuts, bolts, bushings, first and second skeleton seals, enameled wires, first and second O-rings, permanent magnets, ferrules; two identical oil chambers are processed inside the bushings, circumferential The two oil holes are evenly distributed, which is convenient for installation. The joint is processed with a platform on the outside of the two oil holes, and the left and right sides of the two oil holes are guaranteed to be distributed during assembly. The shaft sleeve is processed with an enameled wire column for winding the enameled wire, and the inner side has a support sleeve to cooperate with the stepped shaft. The permanent magnet installed on the stepped shaft and the electromagnet on the shaft sleeve generate repulsive force to support the stepped shaft with magnetic force. The supporting sleeve and the stepped shaft are transitionally matched to form a dynamic pressure to support the stepped shaft. The invention has two sets of support systems of magnetic force support and hydrodynamic pressure support at the same time, which can improve the bearing capacity and rigidity of the bearing.

Description

technical field [0001] The invention relates to the design field of sliding bearings, in particular to a heavy-duty, high-rigidity magnetic-fluid double-suspension dynamic pressure bearing. Background technique [0002] The condition for the hydrodynamic bearing to work normally is that the shaft must have sufficient rotational speed. When the rotational speed of the shaft is low, the carrying capacity of the ordinary hydrodynamic bearing will be greatly reduced, and it cannot effectively support the shaft. The present invention adds a magnetic force support system on the basis of common hydrodynamic pressure bearings, and can improve the carrying capacity and static stiffness of the hydrodynamic pressure bearings. The bearing can also work normally when the rotational speed of the shaft is low, and the application range of the hydrodynamic pressure bearing is expanded. Contents of the invention [0003] The purpose of the present invention is to provide a magnetic fluid ...

AI Technical Summary

Problems solved by technology

[0002] The condition for the hydrodynamic bearing to work normally is that the shaft must have sufficient speed. When the shaft speed is low, the bearing capacity of the ordinary hydrodynamic bearing will be greatly reduced, and it cannot effectively support the shaft.

Images