CN216922876U

CN216922876U - Double-row sealed angular contact bearing

Info

Publication number: CN216922876U
Application number: CN202220683881.1U
Authority: CN
Inventors: 刘华舟; 王献伟
Original assignee: Luoyang Hoopclient Bearing Co ltd
Current assignee: Luoyang Hoopclient Bearing Co ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-07-08
Anticipated expiration: 2032-03-28

Abstract

A double-row closed angular contact bearing relates to a double-row angular contact bearing, and a plurality of spherical rollers (6) with the same curvature with two semicircular section ring grooves A (5) are fully arranged in the two semicircular section ring grooves A (5) according to two groups of end-to-end connection, two inner rings (13) are buckled in the outer ring (7) from two ends of the outer ring (7) relatively, the other part of the section of each spherical roller (6) is contacted with the groove wall of the corresponding semicircular section ring groove B (16) respectively, two bulge rings C (18) are arranged in the two ring grooves A (3) respectively, the end parts of the two bulge rings B (11) are fixedly connected, and the inner wall (4) of the outer ring is in clearance fit with the outer wall (17) of the inner ring; the utility model has the advantages that the bearing angle is increased, the spherical roller is fully filled without a retainer, and the two inner rings and the outer ring are connected to form a labyrinth contact surface, thereby achieving the purposes of increasing the bearing capacity, sealing without leakage of bearing oil, and increasing the lubrication degree and stability.

Description

Double-row closed angular contact bearing

Technical Field

The utility model relates to a double-row angular contact bearing, in particular to a double-row sealed angular contact bearing.

Background

The angular contact ball bearing mainly bears larger unidirectional axial load, and the larger the contact angle is, the larger the load bearing capacity is. The material of the retainer is steel plate, brass or engineering plastic, the forming mode is stamping or turning, and the material is selected according to different bearing forms or using conditions. Other types include combined angular contact ball bearings, double-row angular contact ball bearings and four-point contact ball bearings. The contact angles are typically divided into 15 °, 30 °, 40 °, respectively designated by the letters C, A, B. Angular contact ball bearings can simultaneously withstand both radial and axial loads. Can work at higher rotating speed. The larger the contact angle, the higher the axial load capacity. High precision and high speed bearings typically take a 15 degree contact angle. Under axial force, the contact angle increases. The single-row angular contact ball bearing can only bear axial load in one direction, and when bearing radial load, additional axial force is caused. And can only limit axial displacement of the shaft or housing in one direction. If the bearing is made into a double-row bearing, the wide end faces, and the narrow end faces. This avoids the need to introduce additional axial forces and limits the shaft or housing to within axial play in both directions. The traditional angular contact bearing needs to use a retainer, and the outer ring and the inner ring have larger gaps, so that the contact surfaces of the spherical roller, the outer ring and the inner ring are too small, and bearing oil needs to be added continuously during the bearing operation for lubricating the bearing.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the background technology, the utility model discloses a double-row sealed angular contact bearing, which has the purposes of increasing the bearing capacity, sealing without leakage of bearing oil, and increasing the lubrication degree and stability by increasing the contact angle, fully filling a spherical roller without a retainer and connecting two inner rings and an outer ring to form a labyrinth contact surface.

In order to realize the purpose, the utility model adopts the following technical scheme:

a double-row closed angular contact bearing comprises an outer ring, a spherical roller and an inner ring, wherein the inner wall of the outer ring is two-end necking middle necking, the gradient from two necking ends of the section of the inner wall of the outer ring to the necking ends is 45 degrees, circular cross-section annular grooves A are arranged in the middle of two bevel edges of the section of the inner wall of the outer ring, protruding rings A are arranged at two necking ends of the inner wall of the outer ring, the annular grooves A are arranged on the inner wall of the outer ring adjacent to the protruding rings A, an annular plane A is arranged at the middle necking position of the inner wall of the outer ring, the outer wall of the inner ring is one-side necking of one-side necking, the gradient of the outer wall of the inner ring is 45 degrees, a circular cross-section annular groove B is arranged in the middle of the outer wall of the inner ring, an annular necking is formed from the position of the circular cross-section annular groove B closest to the axis of the inner ring to the outer wall of the inner ring along the axial direction of the inner ring, and the annular necking is formed into an annular plane B, the inner ring is provided with a convex ring B at the necking end of the outer wall of the inner ring, the convex ring C is arranged at the necking end of the outer wall of the inner ring, a plurality of spherical rollers with the same curvature as that of the two semicircular section ring grooves A are fully arranged in the two semicircular section ring grooves A according to two groups of end-to-end connection, one part of the section of each spherical roller is respectively contacted with the groove wall of the corresponding semicircular section ring groove A, the inner rings are two and are oppositely buckled in the outer ring by the two ends of the outer ring, the other part of the section of each spherical roller is respectively contacted with the groove wall of the corresponding semicircular section ring groove B, the two convex rings C are respectively arranged in the two ring grooves A, the end parts of the two convex rings B are fixedly connected, the inner wall of the outer ring is in clearance fit with the outer wall of the inner ring, and the outer edge surfaces of the two convex rings B are in clearance fit with the annular plane A.

The two convex rings C and the two annular grooves A are in clearance fit respectively.

The double-row closed angular contact bearing is characterized in that annular grooves B are formed in the middle of the end faces of protruding rings B respectively arranged at the necking ends of the two inner rings, and the two ends of a connecting ring are respectively embedded into the two annular grooves B to fixedly connect the two protruding rings B.

The double-row sealed angular contact bearing is characterized in that the connecting ring and the two ring grooves B are respectively in tight fit.

The two annular expanding necks of the double-row sealed angular contact bearing respectively form a lubricating channel of bearing oil.

The double-row sealed angular contact bearing is characterized in that the outer wall of the outer ring and two end faces of the outer ring are in chamfer transition respectively.

The double-row closed angular contact bearing has the advantages that the two inner rings and the outer ring are buckled to form a labyrinth contact surface.

Due to the adoption of the technical scheme, the utility model has the following beneficial effects:

according to the double-row sealed angular contact bearing, the purposes of increasing the bearing capacity, sealing without leakage of bearing oil, and increasing the lubrication degree and stability are achieved by increasing the contact angle, fully filling the spherical roller without a retainer and connecting the two inner rings and the outer ring to form a labyrinth contact surface; the utility model has the advantages of ingenious design, strong bearing capacity, long-acting consumption reduction, effectively prolonged service life of the bearing and great market popularization value.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic perspective view of the outer ring of the present invention;

fig. 3 is a schematic perspective view of the two inner rings of the present invention.

In the figure: 1. the outer wall of the outer ring; 2. a projecting ring A; 3. a ring groove A; 4. the inner wall of the outer ring; 5. a semicircular section ring groove A; 6. a spherical roller; 7. an outer ring; 8. an annular plane A; 9. a connecting ring; 10. the inner wall of the inner ring; 11. a projecting ring B; 12. a ring groove B; 13. an inner ring; 14. an annular plane B; 15. expanding the neck annularly; 16. a semicircular section ring groove B; 17. the outer wall of the inner ring; 18. a projecting ring C.

Detailed Description

The present invention will be explained in more detail by the following examples, which are not intended to limit the present invention, and all changes and modifications within the scope of the present invention are intended to be protected by the disclosure of the present invention;

the double-row closed angular contact bearing described in conjunction with the attached figures 1 to 3 comprises an outer ring 7, a spherical roller 6 and an inner ring 13, wherein an inner wall 4 of the outer ring 7 is a necking middle part with two ends expanded neck, the gradient from the two expanding neck ends to the necking end of the section of the inner wall 4 of the outer ring is 45 degrees, annular grooves A5 with semicircular sections are arranged in the middle parts of the two inclined edges of the section of the inner wall 4 of the outer ring, protruding rings A2 are arranged at the two expanding neck ends of the inner wall 4 of the outer ring, annular grooves A3 are arranged on the inner wall 4 of the outer ring adjacent to the two protruding rings A2, an annular plane A8 is arranged at the necking middle part of the inner wall 4 of the outer ring, an outer wall 17 of the inner ring 13 of the inner ring is a necking on one side expanded neck, the gradient of the outer wall 17 of the inner ring is 45 degrees, an annular groove B16 with semicircular sections is arranged in the middle part of the outer wall 17 of the inner ring, the annular groove B16 with semicircular sections is tangent to the outer wall 17 of the inner ring, and forms an annular neck 15 with the inner ring 13 as an axial direction, two annular expansion necks 15 respectively form a lubricating channel of bearing oil, the inner edge of the annular expansion neck 15 forms an annular plane B14, a convex ring B11 is arranged at the necking end of an inner ring outer wall 17, a convex ring C18 is arranged at the necking end of the inner ring outer wall 17, a plurality of spherical rollers 6 with the same curvature as that of two semicircular section ring grooves A5 are fully arranged in the two semicircular section ring grooves A5 according to two groups of end-to-end connection, one part of the section of each spherical roller 6 is respectively contacted with the groove wall of the corresponding semicircular section ring groove A5, two inner rings 13 are oppositely buckled in an outer ring 7 by two ends of the outer ring 7, the other part of the section of each spherical roller 6 is respectively contacted with the groove wall of the corresponding semicircular section ring groove B16, the two convex rings C18 are respectively arranged in the two ring grooves A3, the two convex rings C18 and the two ring grooves A3 are respectively in clearance fit, the middle parts of the end faces of the convex rings B11 respectively arranged at the necking ends of the two inner rings 13 are respectively provided with a ring groove B12, the two ends of the connecting ring 9 are respectively embedded into the two ring grooves B12 to fixedly connect the two bulge rings B11, the connecting ring 9 and the two ring grooves B12 are respectively in close fit, the outer ring inner wall 4 and the inner ring outer wall 17 are in clearance fit, the outer edge surfaces of the two bulge rings B11 are in clearance fit with the annular plane A8, the two end surfaces of the outer ring outer wall 1 and the outer ring 7 are respectively in chamfer transition, and the two inner rings 13 and the outer ring 7 are buckled to form a labyrinth contact surface.

When the double-row closed angular contact bearing is used, two groups of spherical rollers 6 coated with bearing oil are respectively fully filled in two semi-circular section ring grooves A5, a part of the section of each spherical roller 6 is respectively contacted with the groove wall of the corresponding semi-circular section ring groove A5, two inner rings 13 are oppositely buckled in an outer ring 7 from two ends of the outer ring 7, the other part of the section of each spherical roller 6 is respectively contacted with the groove wall of the corresponding semi-circular section ring groove B16, the arrangement of the annular expanded neck 15 can ensure that the inner rings 13 smoothly extend into the outer ring 7 when the inner rings 13 are buckled in the outer ring 7, the bearing oil of the spherical rollers 6 coated with the bearing oil can be transmitted and lubricated by the annular expanded neck 15 in the using process of the double-row closed angular contact bearing, two convex rings C18 are respectively in clearance fit with the two ring grooves A3, the outer edge surfaces of two convex rings B11 are in clearance fit with an annular plane A8, The arrangement of the clearance fit between the inner wall 4 of the outer ring and the outer wall 17 of the inner ring ensures that the contact between the inner ring 13 and the outer ring 7 is limited to that one part of the section of each spherical roller 6 is respectively contacted with the groove wall of the corresponding semicircular section ring groove A5, and the other part of the section of each spherical roller 6 is respectively contacted with the groove wall of the corresponding semicircular section ring groove B16, so that the hard friction between the two inner rings 13 and the outer ring 7 is avoided, and the labyrinth contact surface formed by buckling the two inner rings 13 and the outer ring 7 prevents the bearing oil of the spherical roller 6 coated with the bearing oil from leaking outwards, thereby increasing the lubrication degree, and prolonging the operation smoothness and the service life of the utility model.

The present invention is not described in detail in the prior art.

Claims

1. A double-row closed angular contact bearing is characterized in that: the ball roller bearing comprises an outer ring (7), spherical rollers (6) and an inner ring (13), wherein the inner wall (4) of the outer ring (7) is necked in the middle of two expanded necks, the two expanded necks of the section of the inner wall (4) of the outer ring are both 45 degrees to the necked in end, the middle parts of two bevel edges of the section of the inner wall (4) of the outer ring are both provided with semicircular section annular grooves A (5), the two expanded necks of the inner wall (4) of the outer ring are both provided with bulge rings A (2), the inner wall (4) of the outer ring adjacent to the two bulge rings A (2) is both provided with annular grooves A (3), the middle necked in part of the inner wall (4) of the outer ring is provided with an annular plane A (8), the outer wall (17) of the inner ring (13) is necked in one side of the expanded necks, the gradient of the outer wall (17) of the inner ring is 45 degrees, the middle part of the outer wall (17) of the inner ring is provided with semicircular section annular groove B (16), and the inner wall (17) is positioned at the position, which is closest to the inner edge of the axis of the inner ring (13) of the inner ring (16), and takes the inner ring (13) as the inner ring (17) as the inner ring The axial center of the spherical roller is axially tangent to form an annular expanded neck (15), the inner edge of the annular expanded neck (15) forms an annular plane B (14), a convex ring B (11) is arranged at the necking end of the inner ring outer wall (17), a convex ring C (18) is arranged at the necking end of the inner ring outer wall (17), a plurality of spherical rollers (6) with the same curvature as that of the two semicircular section ring grooves A (5) are fully arranged in the two semicircular section ring grooves A (5) according to two groups of end-to-end connection, one part of the section of each spherical roller (6) is respectively contacted with the groove wall of the corresponding semicircular section ring groove A (5), the inner rings (13) are two and are oppositely buckled in the outer ring (7) by the two ends of the outer ring (7), the other part of the section of each spherical roller (6) is respectively contacted with the groove wall of the corresponding semicircular section ring groove B (16), the two convex rings C (18) are respectively arranged in the two ring grooves A (3), the end parts of the two bulge rings B (11) are fixedly connected, the inner wall (4) of the outer ring and the outer wall (17) of the inner ring are in clearance fit, and the outer edge surfaces of the two bulge rings B (11) are in clearance fit with the annular plane A (8).

2. The double row angular contact sealed bearing according to claim 1, wherein: the two convex rings C (18) and the two ring grooves A (3) are in clearance fit respectively.

3. The double row angular contact sealed bearing according to claim 1, wherein: the middle parts of the end surfaces of the convex rings B (11) respectively arranged at the necking ends of the two inner rings (13) are provided with ring grooves B (12), and the two ends of the connecting ring (9) are respectively embedded into the two ring grooves B (12) to fixedly connect the two convex rings B (11).

4. The double row angular contact sealed bearing according to claim 1, wherein: the connecting ring (9) and the two ring grooves B (12) are respectively in tight fit.

5. The double row angular contact sealed bearing according to claim 1, wherein: the two annular enlarged necks (15) form lubricating channels for bearing oil respectively.

6. The double row angular contact sealed bearing as claimed in claim 1, wherein: the two end faces of the outer ring outer wall (1) and the outer ring (7) are respectively in chamfer transition.

7. The double row angular contact sealed bearing according to claim 1, wherein: the two inner rings (13) and the outer ring (7) are buckled to form a labyrinth contact surface.