CN219366578U

CN219366578U - Combined bidirectional bearing

Info

Publication number: CN219366578U
Application number: CN202320270712.XU
Authority: CN
Inventors: 琚忠诚
Original assignee: Wuhu Ruyi Bearing Co ltd
Current assignee: Wuhu Ruyi Bearing Co ltd
Priority date: 2023-02-14
Filing date: 2023-02-14
Publication date: 2023-07-18
Anticipated expiration: 2033-02-14

Abstract

The utility model discloses a composite bidirectional bearing, which comprises an outer ring, an inner ring, double-row steel balls arranged between the outer ring and the inner ring, and a retainer for mounting rolling bodies, wherein the surface of the outer ring is convex, and the convex extends along the circumferential direction of the surface of the outer ring and is connected end to form a convex ring; the outer ring is also sleeved with two gaskets, and the two gaskets are positioned at two sides of the convex ring and are matched with the convex ring to form an assembly space for installing the roller; the assembly space is filled with a plurality of rollers and forms axial support with the gasket. The utility model can provide high axial bearing capacity in high-speed rotation occasions and meet high rotating speed and high bearing requirements.

Description

Combined bidirectional bearing

Technical Field

The utility model relates to a bearing, in particular to a composite bidirectional bearing.

Background

In general, in the case of a relatively high axial load demand and with a relatively high axial position accuracy, a thrust cylindrical roller bearing and a thrust angular contact ball bearing are commonly used at the same time. Thrust angular contact ball bearings are typically used in pairs, such as back-to-back or face-to-face, with good resistance to overturning moment (i.e., O-ring pairing), and also avoid bearing seizing due to shaft thermal elongation (as opposed to face-to-face). The thrust angular contact bearings used in pairs can eliminate internal derivative axial loads and have good positioning accuracy. The thrust cylindrical roller bearing can bear a larger axial load than the thrust angular contact ball bearing, but is not well suited for use in higher rotational speed applications. In addition, the two types of bearings can occupy larger space and have larger limitation when being matched.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a composite bidirectional bearing which can provide high axial bearing capacity in the occasion of high-speed rotation and meet the requirements of high rotation speed and high bearing.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the composite bidirectional bearing comprises an outer ring, an inner ring, double-row steel balls arranged between the outer ring and the inner ring, and a retainer for mounting rolling bodies, wherein the surface of the outer ring is convex, and the convex extends along the circumferential direction of the surface of the outer ring and is connected end to form a convex ring; the outer ring is also sleeved with two gaskets, and the two gaskets are positioned at two sides of the convex ring and are matched with the convex ring to form an assembly space for installing the roller; the assembly space is filled with a plurality of rollers and forms axial support with the gasket.

As a further improvement of the utility model, the inner ring comprises a first inner half ring and a second inner half ring, the first inner half ring and the second inner half ring are combined to form the inner ring, the first inner half ring and the second inner half ring are respectively provided with a first rollaway nest at the positions corresponding to the double-row steel balls, the outer ring is provided with a second rollaway nest at the positions corresponding to the first rollaway nest, and the first rollaway nest and the second rollaway nest are adapted to form rollaway nest for the double-row steel balls.

As a further improvement of the utility model, the first inner half circle and the second inner half circle form a retaining shoulder through the first rollaway nest, the other side of the corresponding retaining shoulder is provided with a dent, one side of the dent far away from the steel ball is provided with a slope, and an oil throwing structure is formed through the dent and the slope; the oil throwing structures on the first inner half ring and the second inner half ring are oppositely arranged.

As a further improvement of the utility model, the end position of the gasket corresponding to the inner ring and the outer ring is flush with or beyond the end.

The utility model has the beneficial effects that: the requirements on the installation space can be reduced, and the working conditions of high-speed rotation and high bearing capacity are simultaneously met.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of a portion of the structure of the present utility model;

reference numerals: 1. an outer ring; 2. an inner ring; 21. a first inner half turn; 22. a second inner half turn; 3. a steel ball; 4. a convex ring; 5. a gasket; 6. a roller; 7. a shoulder; 8. a recess; 9. and (3) a slope.

Detailed Description

The utility model will be further described in detail with reference to examples of embodiments shown in the drawings.

As shown with reference to figures 1-3,

the composite bidirectional bearing comprises an outer ring 1, an inner ring 2, double-row steel balls 3 arranged between the outer ring 1 and the inner ring 2, and a retainer for mounting rolling bodies, wherein the surface of the outer ring 1 is convex, and the convex extends along the circumferential direction of the surface of the outer ring 1 and is connected end to form a convex ring 4; two gaskets 5 are sleeved on the outer ring 1, the two gaskets 5 are positioned on two sides of the convex ring 4 and are matched with the convex ring 4 to form an assembly space for installing the roller 6; the assembly space is filled with a number of rollers 6 and forms an axial support with the spacer 5.

The scheme forms a composite bearing, utilizes the working condition of the double-row steel balls 3 to adapt to high-speed rotation, and forms an axial high-bearing effect through the cooperation of the gasket 5 and the convex ring 4 and the roller 6 between the gasket and the convex ring, so that extremely high axial supporting force can be provided when the composite bearing is used as a thrust bearing, and the work of the steel balls 3 cannot be influenced.

Wherein the gasket 5 is used as a bearing to be abutted against and received axial pressure, and is supported by the matched rollers 6 and the convex ring 4, and the rollers 6 on two sides of the convex ring 4 form double-row rollers 6. And the space required by assembly can be reduced by matching the two, and compared with an installation mode, the installation method is smaller in limitation and more convenient to install.

In an optional arrangement, the inner ring 2 includes a first inner half ring 21 and a second inner half ring 22, the first inner half ring 21 and the second inner half ring 22 are combined to form the inner ring 2, the positions, corresponding to the double-row steel balls 3, on the first inner half ring 21 and the second inner half ring 22 are provided with first raceways, the positions, corresponding to the first raceways, on the outer ring 1 are provided with second raceways, and the first raceways and the second raceways are adapted to form raceways for the double-row steel balls 3 to roll.

The inner ring 2 is divided into two parts, so that the steel ball 3 is convenient to install, and the first inner half ring 21 and the second inner half ring 22 can be axially extruded and then tightly combined due to the fact that the steel ball is axially loaded in the using process, and high and stable work is kept.

In addition, in a preferred scheme, the first inner half ring 21 and the second inner half ring 22 form a retaining shoulder 7 through a first rollaway nest, a concave 8 is arranged at the other side of the corresponding retaining shoulder 7, a slope 9 is arranged at one side of the concave 8 far away from the steel ball 3, and an oil throwing structure is formed through the concave 8 and the slope 9; the oil slinging structures on the first inner half ring 21 and the second inner half ring 22 are oppositely arranged.

The oil throwing structure is designed to provide oil throwing effect, so that the flow of lubricating oil is maintained at high rotation speed, and the lubricating oil can keep lubricating the steel ball 3.

In order to provide a better support of the spacers 5 and the rollers 6, the spacers 5 are positioned flush with or beyond the end of the inner ring 2 and the outer ring 1, respectively.

The spacer 5 is flush with or beyond the end, can provide better support and can overcome the play problem of the bearing.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The composite bidirectional bearing comprises an outer ring, an inner ring, double-row steel balls arranged between the outer ring and the inner ring, and a retainer for mounting rolling bodies, and is characterized in that the surface of the outer ring is convex, and the convex extends along the circumferential direction of the surface of the outer ring and is connected end to form a convex ring; the outer ring is also sleeved with two gaskets, and the two gaskets are positioned at two sides of the convex ring and are matched with the convex ring to form an assembly space for installing the roller; the assembly space is filled with a plurality of rollers and forms axial support with the gasket.

2. The composite bidirectional bearing of claim 1, wherein the inner ring comprises a first inner half ring and a second inner half ring, the first inner half ring and the second inner half ring are combined to form the inner ring, the positions of the first inner half ring and the second inner half ring corresponding to the double-row steel balls are provided with first rolling tracks, the positions of the outer ring corresponding to the first rolling tracks are provided with second rolling tracks, and the first rolling tracks and the second rolling tracks are adapted to form rolling tracks for the double-row steel balls.

3. The composite bidirectional bearing according to claim 2, wherein the first inner half ring and the second inner half ring form a shoulder through the first raceway, a recess is arranged at the other side of the corresponding shoulder, a slope is arranged at one side of the recess far away from the steel ball, and an oil throwing structure is formed through the recess and the slope; the oil throwing structures on the first inner half ring and the second inner half ring are oppositely arranged.

4. The composite bi-directional bearing of claim 1, wherein the spacer is positioned flush with or beyond the end of the inner race and outer race.