A load balancing sliding bearing

Abstract

The invention discloses a load-balanced sliding bearing, which comprises an inner spherical bush and an outer spherical bush; the inner spherical bush and the outer spherical bush form a spherical fit, and the inner spherical surface of the inner spherical bush has a rigidity-reducing groove. The increase of the radius of curvature of the inner spherical surface of the inner spherical bearing mated with the outer spherical bushing and the lubricating oil stored in the rigidity-reducing groove are conducive to the deflection of the bearing bush following the journal, reducing the frictional resistance during the deflection of the bearing bush, and improving the deflection of the bearing bush. The jamming phenomenon between the bearing bush and the bearing bush; the saddle-shaped axial gap formed between the bearing bush and the journal reduces the oil film pressure and bush temperature in the middle of the bearing bush, and improves the safety and reliability of the unit in service.

Description

technical field [0001] The invention belongs to the technical field of sliding bearings, in particular to a load balancing sliding bearing. Background technique [0002] During the operation of the sliding bearing, due to the static deflection of the rotor due to its own gravity and the misalignment of the installation, the centerline of the journal and the centerline of the bearing do not coincide, resulting in deflection in the axial direction, causing the support bearing and journal Axial rubbing occurs; and during operation, the oil film pressure of the bearing is asymmetrical along the axial direction, so that the temperature sensor installed in the middle of the axial position of the bearing cannot capture the highest bush temperature of the bearing bush, so the health status of the bearing cannot be accurately monitored . For thrust-supported combined bearings, the deflection of the journal affects the load distribution of each thrust pad, and then the temperature ri...

AI Technical Summary

Problems solved by technology

[0002] During the operation of the sliding bearing, due to the static deflection of the rotor due to its own gravity and the misalignment of the installation, the centerline of the journal and the centerline of the bearing do not coincide, resulting in deflection in the axial direction, causing the support bearing and journal Axial rubbing occurs; and during operation, the oil film pressure of the bearing is asymmetrical along the axial direction, so that the temperature sensor installed in the middle of the axial position of the bearing cannot capture the highest bush temperature of the bearing bush, so the health status of the bearing cannot be accurately monitored

For thrust-supported combined bearings, the deflection of the journal affects the load distribution of each thrust pad, which in turn causes the temperature rise of the heavily loaded thrust pad to be too high

In order to make the bearing bush follow the deflection of the journal so as to ensure the centering of the journal and the bearing, the support bearing or the thrust support joint bearing, a structure with a spherical pair is often used at present. The characteristic of this structure is that the mating surface of the bearing bush is an outer spherical surface and The mating surface of the bushing supporting the bearing bush is an inner spherical surface; the disadvantage is that the bushing is constrained by the bearing seat, and the radius of curvature changes little after being stressed; due to the high rigidity of the bearing bush, the radius of curvature changes little after being stressed

Therefore, in actual work, it often occurs that the pad body and the pad sleeve are jammed, and the accurate alignment between the journal and the pad body cannot be maintained, thereby affecting the bearing capacity.

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