RU202245U1 - SLIP JOINT BEARING - Google Patents

Abstract

The claimed technical solution relates to the field of mechanical engineering, namely to spherical bearings and to rotary units operating at elevated temperatures. A spherical plain bearing containing an inner metal ring with a spherical outer surface, an outer ring with a spherical inner surface and an anti-friction gasket installed between them. On one of the ends of the outer ring, a flange is made, and on the other end, a groove is made for installing a spring ring. Both rings are made of heat-resistant alloy.

Description

The technical solution relates to the field of mechanical engineering, namely to spherical bearings and to rotary units operating at elevated temperatures. In more detail, the technical solution refers to the stabilization bodies (aileron, elevon, etc.) of aircraft (AC) made of non-metallic materials with rotation units containing spherical plain bearings.

The closest in terms of a set of essential features is the technical solution according to the patent of the Russian Federation No. 2087763, 2006, which was adopted by the authors as an analogue.

This technical solution is a spherical plain bearing containing an inner metal ring with a spherical outer surface, an outer ring with a spherical inner surface, between which an anti-friction gasket is installed.

The disadvantages of this technical solution include the fact that when embedding a bearing in a part, either deformation of the material of the part is necessary (punching, rolling or squeezing of the surface of the embedment points and the butt end of the bearing) or the manufacture of special grooves in the part for installing spring thrust flat rings. These types of installation are given in OST 1 03841-76 and are intended for embedding bearings in parts made of steels, titanium, aluminum and magnesium alloys. For embedding bearings in parts made of non-metallic materials (ceramics, carbon fiber, fiberglass, etc.), this type of bearings and methods of bearing embedding are impractical to use, since during punching, rolling or compression, chips and destruction of non-metallic material are formed. When sealing a bearing with inner rings, it is necessary to make special and difficult to manufacture grooves in the non-metallic part. The presence of grooves in the design of the assembly leads to an increase in the dimensions, and, consequently, in the mass of the part in which the bearing is located. Also, when the bearing is sealed with the installation of inner rings, the outer diameter of the bearing cannot be less than 14 mm.

The technical result of the utility model is the creation of a spherical plain bearing intended for rotation units of structures made of non-metallic materials.

The specified technical result is achieved in that the spherical plain bearing contains an inner metal ring with a spherical outer surface, an outer ring with a spherical inner surface and an anti-friction gasket installed between them. On one of the ends of the outer ring, a flange is made, and on the other end there is a groove for installing a spring ring, while both rings are made of a heat-resistant alloy.

The proposed technical solution is illustrated by a drawing - in Fig. 1, which shows a general view of the plain plain bearing.

FIG. 1 shows the positions in the following order:

1 - inner ring;

2 - outer ring;

3 - gasket;

4 - flange;

5 - groove;

6 - ring;

7 - body;

8 - axis.

The spherical plain bearing contains an inner metal ring (1) with a spherical outer surface, an outer ring (2) with a spherical inner surface and an anti-friction gasket (3) installed between them, made of graphite grease or an anti-friction coating. On one of the ends of the outer ring there is a flange (4), and on the other end there is a groove (5) for installing a spring ring (6). The bearing is installed in the housing (7), while the axis of rotation (8) is located in the bore of the inner ring (1).

The device works as follows. The bearing is located in the housing bore (7). To fix the bearing in the housing (7), a thrust ring (6) is installed in the groove (5). In the hole of the inner ring (1) is the axis (8) of the aircraft control. During bearing operation, the axle (8) rotates in the bore of the inner ring (1), and the inner ring (1) rotates (swings) around the center of the sphere. In this case, the bearing compensates for misalignment of the axle (9) with the housing bore (8).

The proposed design makes it possible to implement the design of a plain plain bearing intended for rotation units of structures made of non-metallic materials.

Claims (1)

A spherical plain bearing containing an inner metal ring with a spherical outer surface, an outer ring with a spherical inner surface and an anti-friction gasket installed between them, characterized in that a flange is made on one of the ends of the outer ring, and a groove is made on the other end for mounting a spring ring, both rings are made of a heat-resistant alloy.

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