SU1052748A1 - Bearing assembly of cardan joint - Google Patents

Abstract

1. A BEARING KNOT OF A CARDANA HINGE, containing a bearing cup covering the trunnion of the cardan's cross, and a radial needle bearing between them and an axial rolling bearing, as well as a sealing device, including a sealing ring, T & simplify installation, an axial bearing is installed at the base of the trunnion trunnion, a radial annular protrusion located between the needle and axial bearings is made on the inner surface of the support sleeve, odshipnikovy assembly is provided with a sector-shaped grooves bracket compacted at one end of the reference beaker and embracing the rolling body, configured as an axial bearing balls, from the spider trunnion. 2. Bearing unit according to claim 1, characterized in that the sealing device is equipped with a plastic stepped casing, mounted on the ends of the support cup and covering a smaller diameter step sealing ring, and with a mechanical seal pressed onto the cross of the cross and a free edge covering the smaller step casing diameter. 3. Bearing unit according to claim 1, characterized in that the figurnal bracket is L-shaped. sd b5 4 ;;: oo

Description

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular cardan joints.

Known bearing node universal joint, containing a crosspiece and a fork connected to the fingers of the cross through needle bearings with a clip in the form of a cup fixed with a lid. The axial forces arising from the swing of the hinges are perceived by the bottom of the bearing in contact directly with the end face of the cross 1.

However, at high revolutions and swing angles in the friction contact zone, the heating and wear of the rubbing surfaces occur, which reduces the reliability of the hinge and causes its failure.

Closest to the proposed technical essence is the bearing assembly of the universal joint, which contains the bearing cup covering the trunnion shafts of the universal joint and placed between them a radial needle bearing and an axial rolling bearing, as well as a sealing device including a sealing ring 2.

However, the known assembly is difficult to manufacture, has a higher tensile capacity, impedes the supply of lubricant to the rolling bodies, and requires systematic replenishment of the lubricant due to the limited volume of the free cavity due to the need to place the hemisphere bearing, which reduces the reliability of the hinge.

The purpose of the invention is to increase the durability of the bearing assembly and simplify its assembly. (

The goal is achieved by the fact that in the bearing assembly of the universal joint, which contains the bearing cup covering the cross member of the universal joint and placed between them the radial needle bearing and the axial rolling bearing, as well as the sealing device, including the sealing ring, the axial bearing is installed at the base of the cross of the crosspiece on the inside the surface of the support cup is made of a radial annular protrusion located between the needle and axial bearings, the bearing assembly is provided with a figure With round-shaped grooves, a bracket, pressed in by one of the ends in the supporting glass and enclosing the rolling body, made in the form of axial bearing balls, from the side of the crosspiece.

In addition, the sealing device is provided with a plastic step. The case cover, pressed onto the ends of the support sleeve and the sealing ring covering the smaller diameter stage, and with a mechanical seal that is pressed onto the cross of the crosspiece) and the free edge covering the smaller diameter stage of the housing.

Figure bracket can be made L-shaped.

FIG. 1 shows the cardan joint assembly; in fig. 2 — node I in FIG. one; in fig. 3 is a view along arrow A in FIG. 2; in fig. 4 - seal (th device.

The universal joint bearing assembly includes a support cup 3, encompassing the trunnion 1 of the crosspiece 2 of the cardan, and a radial needle bearing 4 placed between them and an axial bearing 5 mounted on an annular radial protrusion 6. The axial bearing balls 5 extend into a figured L-shaped bracket 7 with sector-shaped grooves 8, pressed into one of the ends in the supporting glass 3. The assembly also has a sealing device containing a plastic stepped casing 9, pressed onto the ends of the supporting glass 3 and covering the stupa New smaller diameter sealing

the ring 10, and the mechanical seal 11, pressed on the axle cross and the free edge covering the stage of smaller diameter of the casing 9.

During the operation of the hinge, the radial load from the torque is perceived

bearing 4 and bearing 4, and axial forces and displacement of the crosspiece are limited with the bearing 5 balls, which come into contact directly with the protrusion 6 of the support cup 3, abutting against the cover 12.

Due to the fact that the trunnion is relatively

bearing does not perform circular rotation, the balls can work almost without gaps, except for cases of complete pinching when the swing of the hinge becomes too tight, which is regulated by a certain force of pressing the cover 12 with bolts 13.

In the proposed design of the cardan joint's bearing assembly, the nature of the application of loads to the articulation of the pin of the cross is equalized - rollers -

bearing cup - fork eye, unobstructed lubricant access to the rolling bodies is ensured; damage to the ends (tearing, heating, reflow) is prevented during their contact with the bearing bottom and,

as a result, the reliability of the hinge is improved. In addition, the need for additional fastening of the bearing rotation is eliminated, the mounting of the bearing and sealing device is simplified, which reduces the laboriousness of manufacturing parts and assemblies.

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Claims (3)

1. BEARING ASSEMBLY OF THE GARDEN HINGE, comprising a bearing cup spanning the trunnion of the universal joint of the cardan and a radial needle bearing and an axial rolling bearing arranged between them, as well as a sealing device including a different ring. the fact that, in order to increase durability and simplify installation, the axial bearing is installed at the base of the spigot cross, on the inside 0ag. / radial annular protrusion located between the needle and axial bearings is made on the front surface of the support cup; the bearing assembly is equipped with a bracket, curved with sector-shaped grooves, pressed into one of the ends in the support. '·! a glass and a rolling rolling body, made in the form of axial bearing balls, from the side of the spigot of the cross. 2. Bearing assembly according to π. 1, characterized in that the sealing device is equipped with a plastic stepped casing, pressed onto the ends of the support flange and covering the step of a smaller diameter sealing ring, and a mechanical seal pressed onto the spigot of the crosspiece and a free edge covering the step of a smaller diameter § of the casing. 3. Bearing assembly according to π. 1, characterized in that the brace is made of a L-shaped.