RU2540047C1 - Spherical double-row rolling bearing - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: bearing contains outside split race (1) with toroidal raceways made on each half, internal race (2) with spherical raceway, rolling body in form of rollers (3) with concave profile that is in contact with raceways of the races (1, 2), and separators for rollers (3) separating. Halves of outside race (1) are with collars (4) at end faces.

EFFECT: reduced labour input of manufacturing and increased permitted angle of mutual skewness of outside and internal bearing races.

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Description

The invention relates to the field of engineering, in particular to rolling bearings.

A spherical double-row rolling bearing is known, comprising an outer split ring with toroidal raceways made on each half, an inner ring with a spherical raceway, balls in the form of balls, a separator for separating rolling elements (patent RU 2410581, IPC F16C 19/08 ( 2006.01), F16C 23/08 (2006.01), F16C 33/58 (2006.01), F16C 33/60 (2006.01)).

The disadvantage of the described bearing is the low load capacity caused by the point contact of the balls with the spherical surface of the raceway of the inner ring of the bearing,

Closest to the proposed invention in terms of technical nature and the proposed result (prototype) is a spherical double-row rolling bearing containing an outer split ring with toroidal raceways made on each half of it, an inner ring with a spherical raceway and beads made at its ends, two a number of rolling bodies in the form of rollers with a concave profile that is interfaced with the raceways of the bearing rings, separators installed for each row of rollers to separate the ro Ikov and spacer ring located between the rows of rollers for limiting the mutual approach last (US Patent No. 2387962, IPC F16C 23/00 (2006.01); F16C 23/08 (2006.01)).

The disadvantages of the described bearing are the increased complexity of manufacturing caused by the presence of an additional element - a spacer ring, as well as an insufficient angle of mutual misalignment of the outer and inner rings of the bearing, limited by the abutment of the ends of the rolling elements in the beads of the spherical raceway of the inner bearing ring.

The present invention solves the problem of reducing the complexity of manufacturing and increasing the permissible angle of mutual skew of the outer and inner rings of the bearing.

To solve this problem, in a spherical double-row rolling bearing containing an outer split ring with toroidal raceways made on each half of it, an inner ring with a spherical raceway, a rolling body in the form of rollers with a concave profile that is interfaced with the raceways of the bearing rings, cages for the separation of rolling elements, according to the invention, half of the outer ring of the bearing are made with beads at the ends.

Reducing the complexity of manufacturing a bearing is achieved through the implementation of the halves of its outer ring with flanges at the ends to limit the displacement of the rollers relative to the halves of the outer ring; this eliminates the need for additional manufacture of the spacer ring, which is an element of the bearing design, selected as a prototype.

The extension of the possible range of the angle of mutual skew of the outer and inner rings of the bearing is achieved due to the implementation of the inner ring with no beads on its ends.

The invention is illustrated in the drawing, which shows a spherical double row rolling bearing, axial section.

The spherical double-row rolling bearing contains an outer ring 1, which is split, with toroidal raceways made on each half of it, an inner ring 2 with a spherical raceway, a rolling body in the form of rollers 3 having a concave profile mating with the surfaces of the raceways of rings 1 and 2. To separate the rolling elements in the bearing, separators are introduced (not shown in the drawing). The halves of the outer ring 1 are made with beads 4 at the ends.

Spherical double row bearing operates as follows.

The proposed bearing installed in the node, device, machine provides the perception of loads and transmission of rotation. When the outer ring 1 or inner ring 2 is rotated, the rolling element bearings also rotate, providing the necessary mutual position of the said rings. Mutual misalignment of the bearing rings is carried out by moving the rollers 3 along the raceway of the inner ring 2, made with a spherical surface.

Thus, the use of the invention in comparison with the prototype allows to reduce the number of parts that make up the bearing, and to expand the possible range of mutual misalignment of the bearing rings.

Claims (1)

Spherical double-row rolling bearing, comprising an outer split ring with toroidal raceways made on each half of it, an inner ring with a spherical raceway, rolling elements in the form of rollers with a concave profile that is interfaced with raceways of bearing rings, separators for separating rolling elements, characterized in that the halves of the outer ring of the bearing are made with beads at the ends.