RU176062U1 - RADIALLY THrust ROLLER BEARING WITH RING grooves IN CONIC PROFILE - Google Patents

Abstract

The invention relates to the field of mechanical engineering and can be used in areas of technology where rolling bearings are used, in particular in drilling installations. An angular contact rolling bearing contains an outer ring (1), an inner ring (2) and rollers (3), which are located between raceways. The raceways of the outer and inner rings and rollers are made in the form of annular grooves with a conical profile. Separators (4) are mounted on the axles of the rollers using tubes with internal thread (5) and screws (6). The technical result is an increase in the bearing capacity of the bearing, as well as a reduction in the overall dimensions of the equipment components depending on the overall dimensions of the bearing and, as a result, lower material costs on their production and service. 2 ill.

Description

The proposed technical solution relates to the field of engineering and can be used in technical fields where rolling bearings are used, in particular in drilling installations.

As a prototype, the design of an angular contact ball bearing containing a package of outer rings, inner rings, rows of balls and liners (RU No. 117545 U1, F16C 19/18, June 27, 2012) was adopted.

Signs that are common to the prototype and the proposed technical solution, are the presence of the device of the outer and inner rings and rolling elements located between them.

The reasons that prevent obtaining a technical result in a known technical solution are that balls are used as rolling elements, as well as the presence of inserts placed between them. This geometric shape of the rolling bodies is characterized by a small contact area with the rings, which directly depends on the size of the rolling bodies, i.e. on the diameter of the balls. As a result, to ensure a high level of bearing capacity, it is necessary to use large diameter balls, which, in turn, leads to an increase in the overall dimensions of the bearing in the radial and axial directions. Large overall dimensions of the bearing lead to an increase in the overall dimensions of the components of the equipment in which they are included. The presence of liners in the design of the bearing reduces the level of its carrying capacity, due to a decrease in the total number of rolling bodies, which, in turn, forces the use of a larger bearing size to ensure the required level of carrying capacity.

The problem to which the claimed technical solution is directed is to reduce the overall dimensions of the bearing in the radial and axial directions without compromising its load capacity.

This problem is solved due to the fact that the claimed angular contact roller bearing consists of outer and inner rings and rolling elements located between the raceways, and the raceways of the outer and inner rings are made in the form of annular grooves with a conical profile, the rolling bodies have the shape of cylinders with annular grooves of a conical profile and placed in separators fastened by tubes with internal thread and screws.

The presence on the mating surfaces of the rings and rollers of the raceways in the form of annular grooves with a conical profile allows the use of the proposed bearing design for the perception of combined loads. The claimed technical solution with equal prototype diameters of the rolling bodies has a larger contact area between the rings and the rolling bodies, which allows you to choose a smaller size for the perception of equivalent loads. Counter friction between the rolling bodies in the proposed bearing design is eliminated by means of separators, which fix the position of the rolling bodies relative to each other. Thus, the durability of the bearing increases without the use of liners in its design.

The technical result is to reduce the overall dimensions of the equipment nodes, depending on the overall dimensions of the bearing, and as a result, reduce material costs for their production and maintenance.

The invention is illustrated by drawings, which depict: in FIG. 1 shows a top view of a bearing; in FIG. 2 shows a sectional bearing.

The bearing consists of an outer ring (1), an inner ring (2), between which the rollers (3) are located. On the inner cylindrical surface of the outer ring and the outer surface of the inner ring, as well as on the rollers, annular grooves with a conical profile are made, by means of which these parts engage. The separators (4) are mounted on the axles of the rollers using tubes with internal thread (5) and screws (6).

The operation of the device is explained by the example of the use of a bearing in the downhole motor. Axial loads created during drilling by the drill string and the working bodies of the downhole motor are transferred to the spindle housing and then to the outer bearing ring, which through the rollers comes into contact with the inner bearing ring, which transfers the loads to the spindle shaft.

The use of the proposed technical solution as a part of screw downhole motors will make it possible to reduce the overall dimensions of the bodies of spindles and drill pipes; to make their design more compact and therefore reduce material costs for the production and maintenance of this equipment.

Claims (1)

The angular contact rolling bearing, consisting of an outer ring, an inner ring and rolling elements located between the raceways, characterized in that the raceways of the outer and inner rings are made in the form of annular grooves with a conical profile, the rolling bodies are in the form of cylinders with annular conical grooves profile and placed in separators fastened by tubes with internal thread and screws.

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