A self-aligning bearing with a follow-up seal structure

Abstract

The invention relates to the technical field of bearings, and discloses a self-aligning bearing with a follow-up sealing structure, including an outer ring, an inner ring, a cage fixed to the outer ring wall of the inner ring, and rolling elements uniformly distributed on the cage, and the inner ring , The cage and the rolling elements can rotate freely in the outer ring. A set of follow-up sealing structures are respectively arranged on both sides of the inner ring and the outer ring and between the two. The follow-up seal structure includes a fixed seal on the inner ring The ring groove on the side wall of the ring and the outer ring is centered on the center of the outer ring, the self-rotating structure in the ring groove, and the stretchable sealing layer fixed to the fixed ring and the self-rotating structure at both ends, when the inner ring, cage When the rolling element rotates relative to the outer ring, the retractable sealing layer follows the rotation; when the inner ring, cage and rolling element rotate radially relative to the outer ring, the retractable sealing layer performs telescopic movement, so the bearing can completely avoid Dust enters the cage and rolling body, effectively prolonging the service life of the bearing in various environments.

Description

technical field [0001] The invention relates to the technical field of bearings, in particular to a self-aligning bearing with a follow-up sealing structure. Background technique [0002] In the production process of corundum abrasives, self-aligning bearings are used in many equipment, but during use, due to the large gap between the rotating shaft and the self-aligning bearings, corundum dust will often enter the self-aligning bearings, affecting the self-alignment Adaptive life of bearings. [0003] At present, it is generally sealed by adding an oil seal to the front end of the self-aligning bearing. However, due to the eccentricity of the shaft when it rotates, the oil seal cannot be completely sealed, and dust can still enter the self-aligning bearing and affect the life of the self-aligning bearing. [0004] The Chinese patent with the notification number CN209892747U discloses a self-aligning bearing dust-proof sealing structure that rotates with the shaft, includin...

AI Technical Summary

Problems solved by technology

[0005] However, in the existing self-aligning bearings, the inner ring, rolling elements, and cage can rotate freely around the center of the bearing. The above-mentioned sealing structure can only be used to seal the rolling elements and cage when the inner ring rotates relative to the outer ring in the circumferential direction. During free rotation, part of the rolling elements and cages will turn out to the outside of the outer ring and be directly exposed to the air. However, the sealing structure of the reference document obviously cannot completely cover the cages and rolling elements, and also restricts the inner ring, The cage and rolling elements rotate radially relative to the outer ring, so the above sealing structure cannot be applied to self-aligning bearings

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