WO2014182144A1 - Bearing - Google Patents

Abstract

The utility model relates to the field of mechanical engineering and can be used in the production of bearings for vehicles. The technical result is a reduction in frictional forces, an increase in the speed of the bearing, and an increase in the dynamic (radial) and static (axial) load, owing to which increase the reliability and the service life of the bearing are increased. This is achieved in that the bearing is a combined bearing, comprising a roller bearing with a row of rollers and a ball bearing, and, according to the utility model, the roller bearing comprises an internal race and an external race with the rollers of the roller row arranged therebetween, and the ball bearing comprises two support rings with a separator together with the balls of the ball row arranged therebetween, wherein the roller bearing is connected to the ball bearing by means of interaction of one of the support rings of the ball bearing with the internal or external race of the roller bearing.

Description

 BEARING

5 The utility model relates to the field of mechanical engineering and can be used in the manufacture of bearings for vehicles.

 Currently, bearings are in demand in various fields: from rocket science, metallurgy and energy to [0 machine tool industry, transport and household appliances. Almost all mechanisms where there is an element of movement cannot do without this detail.

 A bearing is a product that is part of a support or abutment that supports a shaft, axle, or other movable structure with

5 given stiffness, and also fixes the position in space, provides rotation, rolling or linear movement (for linear bearings) with the least resistance, perceives and transfers the load from the moving unit to other parts of the structure.

 Known bearing containing the outer and inner rings with

! 0 raceways, rolling elements, as well as rows of rolling elements, the outermost rows are located at the ends of the bearing and in contact with the raceways of the inner ring, and the rolling elements of the middle row are in contact with the rolling elements of the outermost rows located at the ends of the bearing and in contact with the outer raceways rings, while the bodies

15 rolling of the extreme rows in contact with one of the rings are staggered together, and the rows of rolling bodies located at one of the ends of the bearing are also staggered, the rolling bodies of the middle row are also in contact with the rolling bodies of the extreme rows, in which, each orbit contains bodies

Ό rolling of a certain diameter, while the diameters of the rolling bodies are selected depending on the equal distribution of the forces acting on the rolling bodies. / K1L 14349Sh, 03/20/2012 /. The disadvantages of this analogue include a relatively high friction force, insufficiently high bearing speed, insufficiently high dynamic (radial) and static (axial) load.

 Known combined (ball) bearing containing an outer ring with an inner protrusion, a roller, Ball row balls, roller row rollers, ball and roller row separators, end seals, in which, the axial displacement of the roller row rollers is limited on one side by means of its separator, made and placed with the possibility of abutment by one of its ends on the end face of the inner protrusion of the outer ring, and on the other hand, by means of heat-treated metal frame of its seal the outer diameter of the metal frame directly on the raceway of the roller row so that the rollers have the ability to abut their ends against the inner end of the metal frame of the seal L 2109179С1, 04/20/1998 /.

 The disadvantages of this analogue include a relatively high friction force, insufficiently high bearing speed, insufficiently high dynamic (radial) and static (axial) load.

 Known is a combined roller bearing containing one or two rows of rollers that accept radial load, and a ball bearing that accepts axial load, mounted with the possibility of self-aligning relative to the axis of rotation of the roller bearing, in which a ball bearing arched profile of raceways LS 2346190 C2 is used February 10, 2009 /.

The disadvantages of this analogue include a relatively high friction force, insufficiently high bearing speed, insufficiently high dynamic (radial) and static (axial) load.

 The objective of the utility model is to create a bearing with improved technical characteristics.

 The technical result is to reduce friction, increase bearing speed, increase dynamic (radial) and static (axial) loads, which increases the reliability and durability of the bearing.

 This is achieved by the fact that the combined bearing, comprising a roller bearing with one row of rollers and a ball bearing, according to a utility model, the roller bearing comprises an inner and an outer race with rollers of the roller row located between them, the ball bearing contains two thrust rings with cages located between them balls of the ball row, while the roller bearing is connected to the ball bearing by the interaction of one of the thrust rings of the ball bearing with an internal or external cage roller bearing.

 The rollers of the roller row are placed between two support rings and are end-face fixed to the surfaces of two support rings by means of placed end projections of the rollers in the holes on the surface of the two support rings.

 At least one thrust ball bearing ring is provided with a track for balls of a ball row.

 In FIG. 1 shows a combination bearing, where a roller bearing is connected by an inner race to a ball bearing.

In FIG. 2 shows a combination bearing, where a roller bearing is connected by an outer race to a ball bearing. Combined bearings include a roller bearing (1) with one row of rollers and a ball bearing (2), in which the roller bearing (1) contains an inner (3) and an outer (4) cage with roller row rollers (5) located between them, a ball bearing (2) contains two thrust rings (6, 7) with separators (8) placed between them with ball row balls (9), while the roller bearing (1) is connected to the ball bearing (2) by the interaction of one of the thrust rings (6) ) ball bearing (2) with internal (3) as shown in figure 1 or outside it (4) as shown in Figure 2. The roller bearing cage (1).

 The rollers of the roller row (5) are placed between the two support rings (10, 1 1) and are fixed by the end faces to the surfaces of the two support rings (10, 1 1) by means of the placed end protrusions (12) of the rollers (5) in the holes on the surface of the two support rings (10, 1 1). At least one thrust ring (7) of the ball bearing (2) is provided with a track (13) for the balls of the ball row (9)

 The utility model is as follows.

 The present utility model is illustrated by specific examples that clearly demonstrate the possibility of achieving the above set of features of the required technical result, but are not the only ones possible.

 Example 1. Combined bearing with ball bearing inside.

To assemble the combined bearing, the rollers of the roller row with end protrusions are first fixed between the two support rings. In the inner cavity of the support rings with rollers of the roller row, the inner cage of the roller bearing is placed and fixed. The ball bearing assembly is carried out by placing a separator with balls of the ball row between the thrust ball bearing rings. Moreover, on one of the thrust rings of the ball bearing there is a track for the balls of the ball row. The assembled ball bearing through the external protrusion of one of the thrust rings is placed and fixed inside the inner

5 clips of the roller bearing. The outer clip of the roller roller is placed with the possibility of interaction with its inner surface with the rollers of the roller row and the coverage of one of the thrust rings of a ball bearing.

 Example 2. Combined ball bearing

10 bearing outside.

 To assemble the combined bearing, the rollers of the roller row with end protrusions are first fixed between the two support rings. In the inner cavity of the support rings with rollers of the roller row, an inner cage is placed and fixed

15 roller bearings. The assembly of a ball bearing is carried out by placing a cage with balls of a ball row between the thrust rings of a ball bearing. Moreover, on one of the thrust rings of the ball bearing there is a track for the balls of the ball row. The assembled ball bearing of one of the thrust 0 rings along the contour is fixed to the end face of the outer race of the roller bearing, while the outer race of the roller roller is placed with the possibility of interaction of its inner surface with the rollers of the roller row.

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SO

Claims

Formula 1. Combined bearing, comprising a roller bearing with one row of rollers and a ball bearing, characterized in that the roller bearing comprises an inner and an outer race with rollers of the roller row located between them, the ball bearing contains two thrust rings with a separator with balls of ball row wherein the roller bearing is connected to the ball bearing by the interaction of one of the thrust rings of the ball bearing with the inner or outer race of the roller bearing.  2. The bearing according to claim 1, characterized in that the rollers of the roller row are placed between two support rings.  3. The bearing according to claims 1 and 2, characterized in that the rollers of the roller row are fixed with end faces to the surfaces of the two support rings by means of the placed end protrusions of the rollers in the holes on the surface of the two support rings.  4. The bearing according to claim 1, characterized in that at least one thrust ball bearing ring is provided with a track for balls of a ball row.