CN211778524U

CN211778524U - Double-row angular contact ball bearing

Info

Publication number: CN211778524U
Application number: CN201922287434.5U
Authority: CN
Inventors: 郭丽娟; 戎伟军; 李鹏
Original assignee: Ningbo Great Group Co ltd
Current assignee: Ningbo Great Group Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-27
Anticipated expiration: 2029-12-18

Abstract

The utility model relates to a double row angular contact ball bearing relates to the technical field of bearing, and it includes bearing inner race, locates first row ball and second ball, the first retainer of supplementary fixed first row ball and the second retainer of supplementary fixed second row ball between bearing inner race and the bearing inner race, have the first outer lane channel that supplies the first row ball butt to slide and supply the second outer lane channel that the second row ball butt slided on the bearing outer race, have the first inner circle channel that supplies the first row ball butt to slide and supply the second inner circle channel that the second row ball butt slided on the bearing inner race, the ball diameter of first row ball equals the ball diameter of second row ball. The utility model discloses it is good to have stability, has solved the effect that single-row angular contact ball bearing has the problem in clearance when using in pairs.

Description

Double-row angular contact ball bearing

Technical Field

The utility model belongs to the technical field of the technique of bearing and specifically relates to a double row angular contact ball bearing is related to.

Background

Angular Contact Ball Bearings (Angular Contact Ball Bearings) can simultaneously bear radial and axial loads and can operate at higher rotational speeds. The larger the contact angle, the higher the axial load capacity, the contact angle being the angle between the line connecting the contact points of the ball and the raceway in the radial plane and the line perpendicular to the axis of the bearing.

The existing single-row angular contact ball bearing can only bear axial load in one direction, and when bearing radial load, additional axial force can be caused, and corresponding reverse load must be applied, so that the bearing is generally used in pairs; when the single-row angular contact ball bearings are installed and used in pairs, pre-pressing interference is needed.

The above prior art solutions have the following drawbacks: when the single-row angular contact ball bearing is used in a pair on an engine or a transmission with high load, the running stability of the single-row angular contact ball bearing is poor due to the existence of a gap between the two single-row angular contact ball bearings, and the single-row angular contact ball bearing has room for improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a double row angular contact ball bearing, stability is good, has solved the problem that single row angular contact ball bearing has the clearance when using in pairs to the not enough of prior art existence.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a double-row angular contact ball bearing, includes bearing inner race, locates first row ball and second ball, the supplementary first retainer of fixing first row ball and the supplementary second retainer of fixing second row ball between bearing inner race and the bearing inner race, have the first outer lane channel that supplies first row ball butt to slide on the bearing inner race and supply the second outer lane channel that second row ball butt slided, have the first inner lane channel that supplies first row ball butt to slide on the bearing inner race and supply the second inner lane channel that second row ball butt slided, the ball diameter of first row ball equals the ball diameter of second row ball.

Through adopting above-mentioned technical scheme, solved single-row angular contact ball bearing and had the problem in clearance when using in pairs, easy dismounting need not the pre-compaction interference simultaneously, and stability is good.

The present invention may be further configured in a preferred embodiment as: and a first fillet is arranged on the outer edge of the bearing outer ring far away from the bearing inner ring.

By adopting the technical scheme, the stress is dispersed by the arrangement of the first round corners, so that the stress concentration is reduced, the bearing outer ring is not easy to crack, and the structural strength of the bearing outer ring is improved; meanwhile, the sharp edge is removed, so that other parts and hands are not easily scratched by the sharp edge of the bearing outer ring, and the safety of the bearing in use is improved.

The present invention may be further configured in a preferred embodiment as: and the joints of the first fillet, the end surface of the bearing outer ring and the outer side wall are provided with first guiding conical surfaces.

By adopting the technical scheme, the arrangement of the first guiding conical surface facilitates the bearing outer ring to be aligned when being installed in the inner hole, and guides the bearing outer ring to be installed in the inner hole, so that the installation efficiency of the bearing outer ring is improved.

The present invention may be further configured in a preferred embodiment as: and a second fillet is arranged on the inner edge of the bearing inner ring far away from the bearing inner ring.

By adopting the technical scheme, the stress is dispersed by the arrangement of the second round corners, so that the stress concentration is reduced, the bearing inner ring is not easy to crack, and the structural strength of the bearing inner ring is improved; meanwhile, the sharp edge is removed, so that other parts and hands are not easily scratched by the sharp edge of the bearing inner ring, and the safety of the bearing in use is improved.

The present invention may be further configured in a preferred embodiment as: and a second guide conical surface is arranged at the joint of the second fillet and the inner side wall of the bearing inner ring.

By adopting the technical scheme, the arrangement of the second guide conical surface facilitates the alignment of the bearing inner ring sleeve when the bearing inner ring sleeve is arranged on the shaft, and guides the bearing inner ring to be arranged on the shaft, thereby improving the installation efficiency of the bearing inner ring.

The present invention may be further configured in a preferred embodiment as: the contact angles of the first row of balls with the first inner ring channel and the first outer ring channel are 25 degrees, and the contact angles of the second row of balls with the second inner ring channel and the second outer ring channel are 25 degrees.

The present invention may be further configured in a preferred embodiment as: the contact angles of the first row of balls with the first inner ring channel and the first outer ring channel are 40 degrees, and the contact angles of the second row of balls with the second inner ring channel and the second outer ring channel are 30 degrees.

The present invention may be further configured in a preferred embodiment as: and a sealing ring is also inserted in the bearing outer ring, and the diameter of an inner hole of the sealing ring is equal to that of an inner hole of the bearing inner ring.

Through adopting above-mentioned technical scheme, the setting of sealing ring is sealed bearing inner race and the first row of ball of locating in the bearing inner race, has reduced bearing inner race and the contact of first row of ball and external world, makes bearing inner race and the difficult rust of first row of ball, has improved the life of bearing inner race and first row of ball.

The present invention may be further configured in a preferred embodiment as: the bearing outer ring is characterized in that an outer convex ring is integrally arranged on the outer side wall of the sealing ring, and a clamping groove for clamping the outer convex ring is formed in the inner side wall of the bearing outer ring.

Through adopting above-mentioned technical scheme, when the sealing ring is pegged graft in the bearing inner race, the joint through outer bulge loop and joint groove is further fixed, makes the sealing ring be connected more firmly with the bearing inner race.

To sum up, the utility model discloses a following at least one useful technological effect:

1. the stability is good, and the problem that gaps exist when single-row angular contact ball bearings are used in pairs is solved;

2. the installation efficiency of bearing inner race and bearing outer race has been improved.

Drawings

Fig. 1 is a schematic full-sectional view of a double row angular contact ball bearing according to embodiment 1.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 1.

Fig. 4 is an enlarged view of a portion C in fig. 1.

Fig. 5 is a schematic full-sectional view of a double row angular contact ball bearing according to embodiment 2.

In the figure, 1, a bearing outer ring; 11. a first outer race channel; 12. a second outer race channel; 13. a first rounded corner; 14. a first guiding conical surface; 15. a clamping groove; 2. a bearing inner race; 21. a first inner race channel; 22. a second inner race channel; 23. a second rounded corner; 24. a second guiding conical surface; 3. a first row of balls; 4. a second ball bearing; 5. a first holder; 6. a second holder; 7. a seal ring; 71. an outer convex ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, a double-row angular contact ball bearing disclosed by the present invention includes a bearing outer ring 1, a bearing inner ring 2, a first row of balls 3, a second row of balls, a first retainer 5 and a second retainer 6; the bearing outer ring 1 is sleeved on the bearing inner ring 2, the bearing outer ring 1 and the bearing inner ring 2 are concentrically arranged, one end face of the bearing inner ring 2 is embedded in the bearing outer ring 1, and the other end face of the bearing inner ring 2 extends out of the bearing outer ring 1; the bearing outer ring 1 is provided with a first outer ring channel 11, the bearing inner ring 2 is provided with a first inner ring channel 21, the first row of balls 3 are embedded in the first outer ring channel 11 and the first inner ring channel 21, the first retainer 5 and the bearing outer ring 1 are concentrically arranged, the first retainer 5 is arranged between the bearing outer ring 1 and the bearing inner ring 2, and the first retainer 5 is used for assisting in fixing the first row of balls 3; the bearing outer ring 1 is provided with a second outer ring channel 12, the bearing inner ring 2 is provided with a second inner ring channel 22, a second row of balls are embedded in the second outer ring channel 12 and the second inner ring channel 22, the second retainer 6 and the bearing outer ring 1 are arranged concentrically, the second retainer 6 is arranged between the bearing outer ring 1 and the bearing inner ring 2, and the second retainer 6 is used for assisting in fixing the second row of balls; the ball diameter of the first row of balls 3 is equal to the ball diameter of the second row of balls.

The contact angle between the first row of balls 3 and the first inner race channel 21 and the first outer race channel 11 is 40 °, and the contact angle between the second row of balls and the second inner race channel 22 and the second outer race channel 12 is 30 °.

Referring to fig. 1 and 2, the outer edge of the bearing outer ring 1 away from the bearing inner ring 2 is provided with a first fillet 13 to disperse the stress on the outer edge of the bearing outer ring 1 away from the bearing inner ring 2, so that the bearing outer ring 1 is not easy to crack; the joints of the first fillets 13 and the end face and the outer side wall of the bearing outer ring 1 are provided with first guiding conical surfaces 14, so that the bearing outer ring 1 can be conveniently aligned when being installed in the inner hole, and the bearing outer ring 1 is guided to be installed in the inner hole.

Referring to fig. 1 and 3, a second fillet 23 is arranged on the inner edge of the bearing inner ring 2 extending out of the bearing outer ring 1 to disperse the stress of the bearing inner ring 2 extending out of the inner edge of the bearing outer ring 1, so that the bearing inner ring 2 is not easy to crack; the joint of the second fillet 23 and the inner side wall of the bearing inner ring 2 is provided with a second guiding conical surface 24, so as to facilitate alignment when the bearing inner ring 2 is sleeved and installed on the shaft, and guide the bearing inner ring 2 to be installed on the shaft.

Referring to fig. 1 and 5, a sealing ring 7 is further inserted into the bearing outer ring 1, the inner hole diameter of the sealing ring 7 is equal to the inner hole diameter of the bearing inner ring 2, an outer convex ring 71 is integrally arranged on the outer peripheral wall of the sealing ring 7, the radial section of the outer convex ring 71 along the bearing outer ring 1 can be rectangular or semicircular, and the radial section of the outer convex ring 71 along the bearing outer ring 1 is preferably semicircular; the inner side wall of the bearing outer ring 1 is provided with a clamping groove 15, and the outer convex ring 71 is clamped with the clamping groove 15, so that the sealing ring 7 is connected with the bearing outer ring 1 more firmly.

The implementation principle of the embodiment is as follows:

the double-row angular contact ball bearing can bear radial load and axial load acting in two directions, and the double-row angular contact ball bearing does not need to be used in pairs like a single-row angular contact ball bearing when bearing the radial load, so that the problem that the single-row angular contact ball bearing has gaps when being used in pairs is solved, and the stability is better.

Example two:

the difference from the first embodiment is that the contact angle between the first row of balls 3 and the first inner race channel 21 and the first outer race channel 11 is 25 °, and the contact angle between the second row of balls and the second inner race channel 22 and the second outer race channel 12 is 25 °.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a double-row angular contact ball bearing, includes bearing inner race (1), bearing inner race (2), locates first row ball (3) and second ball (4), the supplementary first cage (5) of fixing first row ball (3) and supplementary second cage (6) of fixing second row ball between bearing inner race (2) and bearing inner race (1), have first outer lane channel (11) that supply first row ball (3) butt to slide and supply second row ball butt second outer lane channel (12) that slide on bearing outer race (1), have first inner circle channel (21) that supply first row ball (3) butt to slide and supply second row ball butt second inner circle channel (22) that slide on bearing inner race (2), its characterized in that: the ball diameter of the first row of balls (3) is equal to the ball diameter of the second row of balls.

2. The double row angular contact ball bearing according to claim 1, wherein: and a first fillet (13) is arranged on the outer edge of the bearing outer ring (1) far away from the bearing inner ring (2).

3. The double row angular contact ball bearing according to claim 2, wherein: and the joints of the first fillet (13) and the end surface and the outer side wall of the bearing outer ring (1) are provided with first guide conical surfaces (14).

4. The double row angular contact ball bearing according to claim 1, wherein: and a second fillet (23) is arranged on the inner edge, far away from the bearing inner ring (2), of the bearing inner ring (2).

5. The double row angular contact ball bearing according to claim 4, wherein: and a second guide conical surface (24) is arranged at the joint of the second fillet (23) and the inner side wall of the bearing inner ring (2).

6. The double row angular contact ball bearing according to claim 1, wherein: the contact angles of the first row of balls (3) with the first inner ring channel (21) and the first outer ring channel (11) are 25 degrees, and the contact angles of the second row of balls with the second inner ring channel (22) and the second outer ring channel (12) are 25 degrees.

7. The double row angular contact ball bearing according to claim 1, wherein: the contact angles of the first row of balls (3) with the first inner ring channel (21) and the first outer ring channel (11) are 40 degrees, and the contact angles of the second row of balls with the second inner ring channel (22) and the second outer ring channel (12) are 30 degrees.

8. The double row angular contact ball bearing according to claim 1, wherein: and a sealing ring (7) is further inserted in the bearing outer ring (1), and the diameter of an inner hole of the sealing ring (7) is equal to that of the inner hole of the bearing inner ring (2).

9. The double row angular contact ball bearing according to claim 8, wherein: the bearing outer ring is characterized in that an outer convex ring (71) is integrally arranged on the outer side wall of the sealing ring (7), and a clamping groove (15) for clamping the outer convex ring (71) is formed in the inner side wall of the bearing outer ring (1).