Sliding bearing of spiral floating bushing

Abstract

The invention discloses a sliding bearing of a spiral floating bushing, comprising a bearing outer ring (1), a shaft neck (2) and a floating bushing (3), wherein the floating bushing (3) is mounted between the shaft neck (2) and the bearing outer ring (1) and provided with a spiral groove (4) which is through along the radial direction. The invention can ensure that the shaft neck, a shaft hole and the floating bushing of the bearing are loaded more uniformly and worn almost at the same time to reduce uneven abrasion, can improve the floating capability of the floating bushing and the lubricating condition of the bearing, improve the load distribution of the bearing and prolong the service life of the bearing.

Description

technical field [0001] The invention belongs to the technical field of bearings, and in particular relates to a spiral floating sleeve sliding bearing. Background technique [0002] Sliding bearing is a kind of bearing commonly used in mechanical engineering. It mainly supports the shaft and the parts on the shaft, maintains the rotation accuracy of the shaft or the rotating parts on the shaft, and reduces the friction between the rotating shaft and the supporting or rotating parts on the shaft. and damage. Sliding bearings are suitable for use under conditions such as high speed, high precision, heavy load, high shock and vibration, and limited radial space size. [0003] Floating sleeve sliding bearing is a kind of sliding bearing. The introduction of the floating sleeve can reduce the relative sliding speed between the sliding friction pairs of the bearing, thereby reducing wear, reducing frictional power loss, and prolonging the service life of the bearing. The floati...

AI Technical Summary

Problems solved by technology

The floating sleeve of the existing floating sleeve sliding bearing is a cylindrical tube, and the processing accuracy of the floating sleeve is high. The axial dimension of the conventional floating sleeve is relatively large. When the bearing is working, due to the existence of machining errors, the floating sleeve does not float and rotate, or causes The local load of the floating sleeve is too large, the oil film ruptures, the contact corrosion or gluing occurs on the surface of the bearing pair, the friction resistance between the sliding parts gradually increases, the floating ability of the floating sleeve is weakened or lost, and the bearing fails; because the floating sleeve is a single cylinder The cylinder body and the floating sleeve slide (or do not move) relative to the journal or the shaft hole as a whole. When the bearing is loaded unevenly, especially when the bending moment is large, the local wear of the journal, floating sleeve or shaft hole is serious, resulting in excessive bearing wear. premature failure

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