Double-row angular contact ball bearing

Abstract

The utility model discloses a double-row angular contact ball bearing which comprises a bearing outer ring, a first bearing inner ring, a second bearing inner ring and a side blocking sealing piece, the first bearing inner ring and the second bearing inner ring are symmetrically installed on the inner side of the bearing outer ring, a first retainer is installed between the first bearing inner ring and the bearing outer ring, and a second retainer is installed between the second bearing inner ring and the bearing outer ring. A first retainer is installed between the first bearing inner ring and the bearing outer ring, a second retainer is installed between the second bearing inner ring and the bearing outer ring, a plurality of rollers are evenly distributed on the first retainer and the second retainer, and the two side blocking sealing pieces are symmetrically installed at the two ends of the bearing. The two rows of symmetrically-arranged rollers are installed on the inner side of the bearing to meet the use requirement, compared with a traditional mode that two single-row angular contact ball bearings are used in pairs, the side blocking sealing piece achieves the purpose of integration and light weight design, the side blocking sealing piece can achieve the excellent dustproof and oil retaining effect, and the service life of the side blocking sealing piece is prolonged. The service life of the bearing can be effectively prolonged, and the use cost of the bearing is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing product technical field more particularly, relate to a double row angular contact ball bearing. BACKGROUND

[0002] Angular contact ball bearings can bear radial load and axial load at the same time, and can work at high speed, so they are widely used in metallurgical equipment, mining machinery, engineering machinery, paper machinery, vehicle machinery, aviation machinery and other fields. The most common form of angular contact ball bearings is single row, and two single row angular contact ball bearings are generally required to be installed in pairs to meet the use requirements. However, the use of two single row angular contact ball bearings has the problems of high cost and large overall weight of the bearings. Therefore, bearing enterprises need to develop a new type of angular contact ball bearing to replace the original single row angular contact ball bearing. SUMMARY

[0003] The utility model discloses a double row angular contact ball bearing, which reasonably arranges the inner ring and the roller structure, installs two rows of symmetrically arranged rollers on the inner side of the bearing to meet the use requirements, and achieves the purposes of integration and lightweight design compared with the mode of using two single row angular contact ball bearings in pairs.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A double row angular contact ball bearing, comprising a bearing outer ring, a first bearing inner ring, a second bearing inner ring and a side stop seal, the first bearing inner ring and the second bearing inner ring are symmetrically installed on the inner side of the bearing outer ring, a first retainer is installed between the first bearing inner ring and the bearing outer ring, a second retainer is installed between the second bearing inner ring and the bearing outer ring, a plurality of rollers are uniformly installed on the first retainer and the second retainer, two side stop seals are symmetrically installed at both ends of the bearing, the outer diameter end of each side stop seal is connected with the bearing outer ring, and the inner diameter end of each side stop seal is connected with the first bearing inner ring and the second bearing inner ring respectively.

[0006] Further, a clamping groove is formed on the inner wall of the bearing outer ring, the side stop seal comprises a framework, a lip is formed on the outer diameter end of the framework, the lip can be slid into the clamping groove, the first bearing inner ring and the second bearing inner ring have the same structure, a sealing groove is formed on the outer wall of each of the first bearing inner ring and the second bearing inner ring, the sealing groove is provided with a sealing protrusion and an inner ring side wall on both sides, a first inner lip, a second inner lip and a third inner lip are formed on the inner diameter end of the framework, the first inner lip contacts the sealing protrusion, the second inner lip is inserted into the sealing groove, and the third inner lip contacts the inner ring side wall.

[0007] Further, the roller adopts a steel ball.

[0008] Further, the first bearing inner ring and the second bearing inner ring are both provided with a roller groove, and a locking boss is formed on the outer wall of the inner ring on the side of the roller groove.

[0009] Further, the height difference between the locking boss and the deepest part of the roller groove is 0.24-0.25mm.

[0010] Further, the grease space is filled with lubricating grease.

[0011] Further, the outer wall of the bearing outer ring is outwardly protruded at one end to form a flange plate, and a plurality of through holes are uniformly arranged on the flange plate.

[0012] The utility model has the advantages of:

[0013] 1. The utility model discloses a reasonable layout of the inner ring and the roller structure, which meets the use demand by installing two rows of symmetrically arranged rollers on the inner side of the bearing, and compared with the traditional mode of using two single-row angular contact ball bearings in pairs, the utility model achieves the integrated and lightweight design purposes, can replace the use of two single-row angular contact ball bearings, has lighter weight, and the use cost of the bearing is also significantly reduced.

[0014] 2. The utility model discloses a side stop sealing element with excellent sealing effect, which can form excellent dustproof and oil preservation effects, effectively prolong the service life of the bearing, and further reduce the use cost of the bearing. DRAWINGS

[0015] Figure 1 It is a structure sectional view of a double-row angular contact ball bearing in the embodiment;

[0016] Figure 2 It is an enlarged view of A in Figure 1

[0017] Figure 3 It is a structure sectional view of the second bearing inner ring in the embodiment;

[0018] Figure 4 It is an enlarged view of B in Figure 3

[0019] ​​Reference numerals: 1. Bearing outer ring; 11. Slot; 12. Flange; 13. Through hole; 2. First bearing inner ring; 2. Sealing groove; 21. Sealing boss; 22. Inner ring sidewall; 23. Roller groove; 24. Locking boss; 25. Second bearing inner ring; 3. First cage; 4. Second cage; 5. Roller; 6. Grease space; 61. Lubricating grease; 62. Side seal; 7. Skeleton; 71. Lip; 72. First inner lip; 73. Second inner lip; 74. Third inner lip; 75. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-4 The double-row angular contact ball bearing shown includes an outer ring 1, a first inner ring 2, a second inner ring 3, and a side seal 7. The first inner ring 2 and the second inner ring 3 are symmetrically mounted inside the outer ring 1. A first cage 4 is installed between the first inner ring 2 and the outer ring 1, and a second cage 5 is installed between the second inner ring 3 and the outer ring 1. A plurality of rollers 6 are evenly distributed on both the first cage 4 and the second cage 5. This invention, through the above design, forms two rows of rollers 6 inside the outer ring 1. The first inner ring 2 and the second inner ring 3 respectively serve to mount the two rows of rollers 6. The double inner ring design facilitates bearing assembly. The first inner ring 2 and the second inner ring 3 are tightly combined to form an inner ring assembly. This invention integrates two rows of rollers 6 through a reasonable layout, enabling it to replace two single-row angular contact ball bearings with a single bearing, achieving the effect of pairing two single-row angular contact ball bearings. Compared to two single-row angular contact ball bearings, this invention has fewer parts, is lighter, and is easier to install. This invention achieves the goals of integrated and lightweight design, significantly reducing the operating cost of the bearing. This invention installs two side seals 7 at each end of the bearing, symmetrically. The outer diameter ends of the two side seals 7 are connected to the outer ring 1 of the bearing, and the inner diameter ends of the two side seals 7 are connected to the inner ring 2 of the first bearing and the inner ring 3 of the second bearing, respectively. The side seals 7 can form an excellent sealing effect at both ends of the bearing, effectively extending the service life of the bearing and further reducing the operating cost of the bearing.

[0022] like Figure 1 As shown, the roller 6 of this utility model is made of steel ball, therefore this utility model is a ball bearing.

[0023] The structure of the first bearing inner ring 2 and the second bearing inner ring 3 is same in the utility model, the difference lies in that the first bearing inner ring 2 and the second bearing inner ring 3 are symmetrically installed, as shown in Figure 3 And Figure 4 As shown, the first bearing inner ring 2 and the second bearing inner ring 3 are provided with roller grooves 24, the roller grooves 24 are used for accommodating spherical rollers 6, a locking lug boss 25 is formed on the inner wall of the side of the roller groove 24 and protrudes, the height difference between the locking lug boss 25 and the deepest part of the roller groove 24 is 0.24-0.25mm, and the locking lug boss 25 is directly connected with the edge of the roller groove 24; since the height of the locking lug boss 25 relative to the outer wall of the bearing inner ring is not high, the locking lug boss 25 does not affect the rollers 6 from being installed into the roller grooves 24 under the action of external force, but the locking lug boss 25 protrudes obviously from the deepest part of the roller groove 24, so that the locking lug boss 25 can prevent the rollers 6 from being separated out during the working process of the bearing, and the locking lug boss 25 can limit the transverse movement of the rollers 6, so that the rollers 6 can be kept in the roller grooves 24.

[0024] As shown in Figure 1 The utility model enlarges the interval between the two rows of rollers 6, and the oil space 61 is formed between the two rows of rollers 6, and the lubricating grease 62 is filled in the oil space 61; compared with the single-row angular contact ball bearing, the utility model has a larger filling amount of lubricating grease 62, so that the service life of the bearing can be effectively prolonged.

[0025] As shown in Figure 2 The inner wall of the bearing outer ring 1 is provided with clamping grooves 11, the clamping grooves 11 are respectively arranged at the two ends of the bearing outer ring 1 to match the installation of the two side blocking sealing members 7; the side blocking sealing member 7 comprises a framework 71 made of steel material and serving as the framework of the side blocking sealing member 7; the outer diameter end of the framework 71 is covered with a lip 72, the lip 72 can be slid into the clamping groove 11, and the lip 72 serves as the sealing effect of the connecting part of the bearing outer ring 1; the outer wall of the first bearing inner ring 2 and the second bearing inner ring 3 is provided with a sealing groove 21, and the two sides of the sealing groove 21 are respectively provided with a sealing lug 22 and an inner ring side wall 23; during use of the utility model, the position of the bearing inner ring rotates at high speed, so that the sealing requirement of the position of the bearing inner ring is higher; the inner diameter end of the framework 71 is covered with a first inner lip 73, a second inner lip 74 and a third inner lip 75; the first inner lip 73 contacts the sealing lug 22, the second inner lip 74 is inserted into the sealing groove 21, and the third inner lip 75 contacts the inner ring side wall 23; after the side blocking sealing member 7 is installed, the first inner lip 73, the second inner lip 74 and the third inner lip 75 can form three sealing effects from inside to outside of the position of the bearing inner ring, which can ensure excellent sealing of the side of the bearing, the side blocking sealing member 7 can have good dustproof and oil preservation effects, and the service life of the bearing can be effectively prolonged.

[0026] As shown in Figure 1As shown, the outer wall of the bearing outer ring 1 is outwardly protruded at one end to form a flange plate 12, and a plurality of through holes 13 are uniformly arranged on the flange plate 12, the bearing outer ring 1 is designed to form the flange plate 12 structure to realize the purpose of bolt fixation, and under the design, the flange seat is no longer needed to install the utility model, the integrated function of the utility model is better embodied, and the overall weight of the bearing part can be reduced.

[0027] The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited to the above-mentioned embodiments only, and any technical scheme belonging to the utility model idea belongs to the protection scope of the utility model. It should be pointed out that, for ordinary skilled persons in the art, some improvements and decorations without departing from the principle of the utility model can also be considered as the protection scope of the utility model.

Claims

1. A double-row angular contact ball bearing, characterized in that, The application relates to a bearing, which comprises a bearing outer ring (1), a first bearing inner ring (2), a second bearing inner ring (3) and side block seals (7), the first bearing inner ring (2) and the second bearing inner ring (3) are symmetrically arranged on the inner side of the bearing outer ring (1), a first retainer (4) is arranged between the first bearing inner ring (2) and the bearing outer ring (1), a second retainer (5) is arranged between the second bearing inner ring (3) and the bearing outer ring (1), a plurality of rollers (6) are uniformly arranged on the first retainer (4) and the second retainer (5), two side block seals (7) are symmetrically arranged at the two ends of the bearing, the outer diameter ends of the two side block seals (7) are connected with the bearing outer ring (1), and the inner diameter ends of the two side block seals (7) are connected with the first bearing inner ring (2) and the second bearing inner ring (3) respectively.

2. The double-row angular contact ball bearing of claim 1, wherein, The inner wall of the bearing outer ring (1) is provided with a clamping groove (11), the side block seal (7) comprises a framework (71), the outer diameter end of the framework (71) is covered with a lip (72), the lip (72) can be slid into the clamping groove (11), the first bearing inner ring (2) and the second bearing inner ring (3) are the same in structure, the outer wall of the first bearing inner ring (2) and the second bearing inner ring (3) is provided with a sealing groove (21), the two sides of the sealing groove (21) are provided with a sealing convex (22) and an inner ring side wall (23), the inner diameter end of the framework (71) is covered with a first inner lip (73), a second inner lip (74) and a third inner lip (75), the first inner lip (73) contacts the sealing convex (22), the second inner lip (74) is inserted into the sealing groove (21), and the third inner lip (75) contacts the inner ring side wall (23).

3. The double-row angular contact ball bearing of claim 1, wherein, The roller (6) is a steel ball.

4. The double-row angular contact ball bearing of claim 1, wherein, The first bearing inner ring (2) and the second bearing inner ring (3) are provided with roller grooves (24), and a ring of locking convexes (25) is formed on the outer wall of the inner ring on the side of the roller grooves (24).

5. The double-row angular contact ball bearing of claim 4, wherein, The height difference between the locking convex (25) and the deepest part of the roller groove (24) is 0.24-0.25 mm.

6. The double-row angular contact ball bearing of claim 1, wherein, An oil space (61) is formed between the two rows of rollers (6), and the oil space (61) is filled with lubricating grease (62).

7. The double-row angular contact ball bearing of claim 1, wherein, A flange plate (12) is formed on one end of the outer wall of the bearing outer ring (1), and a plurality of through holes (13) are uniformly arranged on the flange plate (12).

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