RU2588288C1 - Double-row roller bearing - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to machine building, particularly, to rolling bearings. Double-row roller bearing includes inner ring (4) with two cylindrical raceways (5), separated in central part of ring common collar (6), inner split race (1), equipped with cylindrical raceways (2) at its halves, limited beads (3) on their external sides, rolling bodies in form of rollers (7). Cylindrical roller paths (5) of internal ring (4) are limited by outer end surfaces of bearing. Ends of rollers (7) have a spherical shape of sphere with radius equals to radius of roller (7) and races (2, 5) have shape mating profile of rollers (7).

EFFECT: technical result is increased permissible load in axial direction accepted by bearing, and reduced labour intensity of its production.

1 cl, 1 dwg

Description

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

Known double-row roller bearing containing an inner split ring with cylindrical raceways on its halves, limited by flanges located on the edges of the raceways, an outer ring with two cylindrical raceways separated in the central part of the ring by a common bead, rolling elements in the form of rollers, cages to separate the rolling elements. The cylindrical raceways of the outer ring are bounded by the outer end surfaces of the bearing. In the bead zones - a cylindrical raceway of the bearing rings, grooves are made. The device can be equipped with separators for the separation of rolling elements (Bearing type 972000 [Electronic resource]. - Access mode: URL: http://podshipnik-servis.ru (02/10/2015).

The disadvantages of the described bearing are the limited ability to absorb axial load, since grooves made in the bead areas — cylindrical raceway reduce the allowable axial load perceived by the bearing, and the increased laboriousness of manufacture due to the necessity of introducing beads at the raceways of the bearing rings, which contributes to its increased cost.

Closest to the proposed invention in terms of technical nature and the proposed result (prototype) is a two-row roller bearing containing an inner ring with two cylindrical raceways separated in the central part of the ring by a common shoulder and limited by beads on opposite sides of the raceways, an outer split ring provided cylindrical raceways on its halves, limited by beads on their outer sides, rolling elements in the form of rollers. In the flange zone is a cylindrical raceway of the bearing rings grooves are made. The device can be equipped with separators for the separation of rolling elements. (Bearing type 4722000 [Electronic resource]. - Access mode: URL: http://podshipnik-servis.ru (02/10/2015).

The disadvantages of the described bearing are the limited ability to absorb axial load, since grooves made in the bead areas — cylindrical raceway reduce the allowable axial load perceived by the bearing, and the increased laboriousness of manufacture due to the necessity of introducing beads at the raceways of the bearing rings, which contributes to its increased cost.

The present invention solves the problem of increasing the permissible load in the axial direction perceived by the bearing, and reducing the complexity of its manufacture.

To solve the problem in a two-row roller bearing containing an inner ring with two cylindrical raceways, separated in the central part of the ring by a common bead, an outer split ring equipped with cylindrical raceways on its halves, bounded by beads on their outer sides, a rolling body in the form rollers, according to the invention, the cylindrical raceways of the inner ring are bounded by the outer end surfaces of the bearing, the ends of the rollers are spherical in shape sphere with a radius equal to the radius of the roller and the raceway have a profile mating with the profile of the rolling bodies.

Thus, in a two-row roller bearing due to the contact of the spherical ends of the roller with the profile of the raceways, the axial load acting on the shaft is perceived, and the absence of the need for grooves increases the stiffness of the bearing rings in the axial direction and, as a result, the allowable axial force perceived bearing.

The limitation of the cylindrical raceways of the inner ring to the outer end surfaces of the bearing in the absence of beads on opposite sides of the raceways of the inner ring reduces the complexity of manufacturing and the cost of the bearing while maintaining the operational characteristics of the latter.

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

The double-row roller bearing contains an outer split ring 1 with cylindrical raceways 2 on its halves, bounded by flanges 3 on the outer sides of the raceways 2, an inner ring 4 with two cylindrical raceways 5, separated in the central part of the ring 4 by a common bead 6, of the rolling body made in the form of rollers 7 having a cylindrical shape in the middle part and a spherical shape at the ends, with a radius of the sphere equal to the radius of the roller. The profile of the raceways is mated with the profile of the rollers 7. To separate the rolling elements in the bearing, a separator is installed (not shown in the drawing).

Two-row roller bearing operates as follows.

The proposed double-row roller bearing installed in the node, device, machine, provides the perception of loads and transmission of rotation. When rotating the outer ring 1 of the bearing or the inner ring 4 of the bearing, the rolling elements also rotate, providing the necessary mutual position of the outer ring 1 and the inner ring 4 of the bearing. Due to the contact of the spherical ends of the rollers 7 with the profile of the raceway 2 and the profile of the raceway 5, the axial load acting on the shaft is perceived.

Thus, the use of the invention in comparison with the prototype allows to increase the allowable load in the axial direction, perceived by the bearing, and to reduce its cost by reducing the complexity of manufacturing.

Claims (1)

A double-row roller bearing containing an inner ring with two cylindrical raceways separated in the central part of the ring by a common bead, an outer split ring provided with cylindrical raceways on its halves, limited by beads on their outer sides, a rolling body in the form of rollers, characterized in that the cylindrical raceways of the inner ring are bounded by the outer end surfaces of the bearing, the ends of the rollers have a spherical shape with a radius of the sphere equal to the radius p faces and the raceway have a profile mating with the profile of the rolling bodies.

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