Self-aligning roller bearing split-type retainer and design method thereof

Abstract

The invention discloses a self-aligning roller bearing split-type retainer and a design method thereof. The outer diameter of the retainer is increased based on a current double-claw integral solid retainer, so that the outer diameter dimension Dc of the retainer is bigger than the inner diameter dimension of an outer ring; the middle part of the retainer is split into a left half part and a right half part from the middle part, and then split into two halves from the centre of a pocket hole along the axial direction of the left half part and the right half part of the retainer; the right half part of the retainer is rotated by 90 degrees clockwise or clockwise to stagger the axial split part, so that the centre of a beam on the right half part of the retainer is aligned to the centre of the pocket hole on the right half part of the retainer, and drilled with a connecting hole in a matched manner; four parts respectively formed in the radial direction and the axial direction of the retainer are placed between the inner ring and the outer ring of the bearing, and then rotate out with the inner ring from an outer ring roller, and finally are connected together by a plurality of inner hexagonal bolts and spring pins to form an integer. The retainer has high strength and high reliability, so that the bearing has high carrying capacity in the axial direction and the radial direction, and operating stability.

Description

technical field [0001] The invention belongs to the technical field of bearings, in particular to a split cage of a spherical roller bearing and a design method thereof. Background technique [0002] At present, spherical roller bearings are generally composed of inner ring 4, outer ring 1, rolling elements 2 and cage 3, such as figure 1 As shown, the self-aligning roller bearing can be self-aligning, and mainly bears radial loads, but also has a high axial load capacity. Spherical roller bearings are widely used in steelmaking, steelmaking, papermaking, shipping, electric power and other industries due to their high load carrying capacity, good anti-vibration performance, and the ability to compensate for concentricity errors caused by installation and shaft deformation. Converter, continuous casting machinery, papermaking machinery, hoisting machinery, reducer, vibration machinery and other mechanical equipment. [0003] The cage of the existing spherical roller bearing ...

AI Technical Summary

Problems solved by technology

Since the design of light and wide series bearings requires that the outer diameter of the cage Dc cannot be greater than the inner diameter of the outer ring D1, the thickness of the cage is usually designed to be thinner, and the strength of the cage is relatively weak.

During processing, the distance between the center of the pocket bottom of the cage and the outer diameter is very small, and the center of the drill bit is unstable, which often leads to large machining errors of the pocket, and the roller is easily skewed or stuck in the pocket of the cage.

At the same time, in order to increase the thickness of the cage of the structure, the movable retaining ring or the fixed retaining ring in the middle of the inner ring is canceled, which reduces the axial bearing capacity of the bearing; the length of the roller is also reduced, so that the diameter of the bearing The bearing capacity is also reduced accordingly, and the service life is shorter

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