RU1831598C - Plain radial-thrust bearing - Google Patents

Abstract

SUMMARY OF THE INVENTION: A metal sleeve is inserted into the housing of an angular contact bearing along its inner diameter, having an inner diameter on the side opposite to the action of axial force as an elastic element, a collar, and on the inside, the metal sleeve is provided with an / -shaped plastic insert. The thrust bearing is made in the form of a metal cage having a flange on the outer diameter from the side of the axial force, which is fitted on the bobbin of the bearing assembly along the inner diameter with a tension, the plastic-shaped liner has diametrical clearances on all friction surfaces that accept radial and axial loads . 2 ill.

Description

The invention relates to mechanical engineering and may find application in agricultural machinery, nesosostroenie and other industries, in particular, for the use of various rotary action machines as sliding supports.

The purpose of the invention is the prevention of wear of the seats of the shaft and the housing of the bearing assembly and the improvement of heat removal to the shaft and housing,

The goal is achieved in that an outer metal annular cage is inserted in the housing of the bearing assembly with a tension, an inner metal annular cage is inserted on the shaft, and an antifriction element of a shaped section is placed between them, and the friction surfaces of the outer and inner cages are made with mating / -shaped surfaces . Between the outer metal ring cage and the anti-friction element of / -shaped section, as well as

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There are diametrical axial and radial gaps between the element and the inner metal annular race.

This design of the angular contact bearing allows for alternating heat transfer to the shaft and housing. Depending on the radial and axial forces, the dimensions of the j-shaped anti-friction element can be changed.

In FIG. 1 is a cross-sectional view of an angular contact ball bearing assembly with an indication of the direction of action of the forces; in FIG. 2 is a sectional view of an angular contact plain bearing indicating radial and axial friction surfaces.

The angular contact sliding bearing assembly comprises a bobbin 1 with a housing 2. in which a sleeve 3 is installed, covering the bobbin 1.

The outer metal annular ring 4 in outer diameter with a tension fits on the inner surface

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housings 2. An anti-friction element of a J-shaped section 5 is put on the inner surface of the outer casing 4 with a gap, on the inner surface of which the inner metal cage 6 is put on with a gap, mounted on the bobbin 1.

The cuffs 7 enclose the bobbin 1 and are installed in the cover 8. Four bolts 9 on the housing 2 secures the cover 8. simultaneously, with the end surface abutting against the outer ring 4. The half-bobbin 10 is put on the bobbin 1 and abuts against the inner ring 6 on one side, and with the other side is secured by snap rings 11 to prevent displacement.

The angular contact sliding bearing (Fig. 2) has supporting surfaces A and A between the outer race 4 and the anti-friction element 5, and the supporting surfaces are rotary. the characteristics B and C between the inner sleeve b and the anti-friction element 5 and the end surfaces of the friction G and P between the clips 6 and 4 and the anti-friction element 5.

Angular contact bearing operates as follows.

During the translational movement of the LDH unit due to the rotation of the battery disks on the floor surface, the bobbin 1 rotates with the half bobbin 10 and the inner ring 6. The outer ring 4 in the housing 2 is stationary, due to which a friction pair is formed. To reduce the wear of the outer race 4 and the inner race 6, an anti-friction element of a j-section is located between them. Depending on the angle of attack of the LDH aggregate and due to the fact that the disks are made spherically in one direction horizontally, an axial force Fa arises and a vertical radial force FZ arises from the weight of the tiller battery vertically (Fig. 1). Between the inner race b and the anti-friction element 5 there are diametrical gaps. At the initial moment of operation of the friction bearing pair, when the temperature of the antifriction element 5, the outer 4 and the inner race is the same, rotation occurs on surfaces A and A due to lower specific pressure from the external forces Fa and Fz.

As the temperature rises on the outer surface of the antifriction element 5 when it rotates together with the bobbin 1 in the outer race 4, the friction coefficient between them increases and the friction surfaces set, at this moment the friction continues along

supporting surfaces m and 8. The anti-friction member 5 begins to rotate with the inner race 6. Such operation of a sliding bearing is called a reverse pair.

Further work of the return pair creates a temperature increase on the inner surface of the anti-friction element 5, and heat is removed from the housing from

0 of the outer race 4. As a result, there comes a moment when the anti-friction element 5 begins to rotate together with the inner race 6, such a pair is called forward pair. When the bobbin 1 is continuously rotated under the influence of temperature, the forward and reverse friction pairs alternate, which also reflected on the end surfaces of T and D. This plain bearing is distinguished by its simplicity of design and compactness, which increases manufacturability.

Overall dimensions correspond to overall dimensions of a serial bearing

5 rolling, which allows the replacement of one with another without structural changes to the parts of the assembly.

Failure of a radially thrust plain bearing does not lead to failure of other parts of the assembly,

Improving the reliability and durability of the friction unit by lowering the temperature in the friction zone, as well as the reuse of metal ring

5 clips after replacing the worn anti-friction element of the f-shaped section increase the service life of the node.

Rotation of the anti-friction element ensures uniform wear across all

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Claims (1)

SUMMARY OF THE INVENTION Angular contact ball bearing comprising an outer and inner metal ring race 5 between which an antifriction element of a shaped section is placed with radial and axial clearances relative to the inner race, moreover, the surfaces associated with the antifriction element 0 outer and inner cages are made with mating / -shaped surfaces, characterized in that. that, in order to prevent wear of the shaft seats and the bearing housing and improve the heat sink to the shaft and housing, the anti-friction element is made in the form of a separate sleeve and is installed in cages with radial and axial clearances relative to the outer casing. 5 45 O 7 d 9/0 //