Double-row angular contact ball bearing with composite structure

Abstract

The utility model relates to the technical field of bearings, and discloses a double-row angular contact ball bearing with a composite structure, which comprises a bearing outer ring, a bearing inner ring is arranged on the inner side of the bearing outer ring, the outer part of the bearing inner ring is connected with steel balls in a sliding manner, and the inner side of the bearing outer ring is connected with steel balls in a rotating manner. Steel balls are arranged in the bearing outer ring, retainers are arranged outside the steel balls, sealing grooves are formed in the inner side of the bearing outer ring, sealing grooves are formed in the outer side of the bearing inner ring, sealing rings are arranged in the sealing grooves, dustproof assemblies are arranged in the sealing grooves, and the dustproof assemblies are used for sealing the bearing. According to the bearing, due to the arrangement of the V-shaped bending part and the extending part, the sealing ring and the sealing groove are attached more tightly, the sealing effect can be further improved, and due to the arrangement of the bearing inner ring, the bearing outer ring and the steel balls, the bearing can bear radial and axial loads at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a double-row angular contact ball bearing with a composite structure. Background Art

[0002] Double-row angular contact ball bearings with composite structures are usually a common type of bearings in engineering machinery. They combine the characteristics of double-row angular contact ball bearings and a certain composite structure, and have certain special designs and functions.

[0003] This type of bearing is usually used in industrial applications where large radial and axial loads need to be supported, such as rotating machinery, mining equipment, etc.

[0004] There are certain gaps in the joints of traditional composite double-row angular contact ball bearings, which can easily cause the entry of fine dust and impurities, affecting the running stability of the bearings. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a double-row angular contact ball bearing with a composite structure, aiming to improve the problem in the prior art that there are certain gaps at the bearing connection, which easily causes the entry of fine dust and impurities and affects the running stability of the bearing.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-row angular contact ball bearing of a composite structure, comprising a bearing outer ring, a bearing inner ring is arranged on the inner side of the bearing outer ring, steel balls are slidably connected to the outside of the bearing inner ring, steel balls are rotatably connected to the inner side of the bearing outer ring, retaining frames are arranged on the outside of the steel balls, sealing grooves are opened on the inner side of the bearing outer ring, sealing grooves are opened on the outside of the bearing inner ring, sealing rings are arranged inside the sealing grooves, dustproof components are arranged inside the sealing grooves, and the dustproof components are used to seal the bearings.

[0007] Furthermore, the dustproof assembly includes a V-shaped bending portion, the V-shaped bending portion is arranged inside the sealing groove, both sides of the V-shaped bending portion are fixedly connected with an extension portion, and the outside of the extension portion is fixedly connected with a protrusion.

[0008] Furthermore, grooves are provided inside the outer rings of the bearings.

[0009] Furthermore, the protrusions are all arranged inside the grooves.

[0010] Furthermore, the inner sides of the V-shaped bending parts are fixedly connected with connecting columns, and the outer sides of the connecting columns are provided with compression springs.

[0011] Furthermore, the compression springs are all fixedly connected to the inner side of the V-shaped bending portion.

[0012] Furthermore, a through hole is provided at the top of the outer ring of the bearing, and a threaded plug is connected to the inner thread of the through hole.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, by squeezing the V-shaped bending part, the V-shaped bending part drives the extension part to be clamped in the inside of the sealing groove, and the V-shaped bending part is reset by the compression spring, so that the protrusion outside the extension part is clamped in the inside of the groove, which can not only better fix the sealing ring, but also form a closer fit between the sealing ring and the sealing groove, which helps to further improve the sealing effect.

[0015] 2. In the utility model, the inner and outer rings of the bearing can form a positioning pressure on the steel ball, which helps to better fix and position the steel ball, and can effectively make the steel ball roll stably on the inner and outer rings of the bearing, so that the bearing can withstand radial and axial loads at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a double-row angular contact ball bearing of a composite structure proposed by the utility model;

[0017] Figure 2 A partial structural cross-sectional view of a double-row angular contact ball bearing of a composite structure proposed by the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0019] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0020] Legend:

[0021] 1. Bearing outer ring; 2. Bearing inner ring; 3. Steel ball; 4. Cage; 5. Sealing groove; 6. Sealing ring; 7. V-shaped bending part; 8. Extension part; 9. Bump; 10. Groove; 11. Connecting column; 12. Compression spring; 13. Through hole; 14. Threaded plug. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1 , Figure 2 and Figure 3 The utility model provides an embodiment: a double-row angular contact ball bearing of a composite structure, comprising a bearing outer ring 1, a bearing inner ring 2 is arranged on the inner side of the bearing outer ring 1, a steel ball 3 is slidably connected to the outside of the bearing inner ring 2, a steel ball 3 is rotatably connected to the inner side of the bearing outer ring 1, a retaining frame 4 is arranged on the outside of the steel ball 3, a sealing groove 5 is opened on the inner side of the bearing outer ring 1, a sealing groove 5 is opened on the outside of the bearing inner ring 2, a sealing ring 6 is arranged inside the sealing groove 5, a dustproof component is arranged inside the sealing groove 5, the dustproof component is used to seal the bearing, and the dustproof component comprises a V-shaped bending part 7, the V-shaped bending part 7 is arranged inside the sealing groove 5, both sides of the V-shaped bending part 7 are fixedly connected with an extension part 8, and the outside of the extension part 8 is fixedly connected with a bump 9.

[0024] The inner and outer rings of the bearing can form a positioning pressure on the steel ball 3, which helps to better fix the steel ball 3 and effectively make the steel ball 3 roll stably on the inner and outer rings of the bearing. The sealing groove 5 is used to install the sealing ring 6, and the sealing ring 6 is used for dust prevention. The V-shaped bending part 7 is used to drive the extension part 8 to fix the sealing ring 6, and the protrusion 9 cooperates with the groove 10 to fix the extension part 8.

[0025] Reference Figure 2 , Figure 3 and Figure 4 A groove 10 is provided inside the outer ring 1 of the bearing, and the protrusions 9 are arranged inside the groove 10. A connecting column 11 is fixedly connected to the inner side of the V-shaped bending part 7, and a compression spring 12 is provided outside the connecting column 11. The compression spring 12 is fixedly connected to the inner side of the V-shaped bending part 7. A straight through hole 13 is provided on the top of the outer ring 1 of the bearing, and a threaded plug 14 is threadedly connected to the inner side of the straight through hole 13.

[0026] The groove 10 is used to limit the protrusion 9, the connecting column 11 is used to install the compression spring 12, the compression spring 12 is used for resetting and clamping, the straight hole 13 is used to add lubricating oil, and the threaded plug 14 is used to seal the straight hole 13.

[0027] Working principle: When in use, the sealing ring 6 is placed inside the sealing groove 5, and then the V-shaped bending part 7 is squeezed, so that the V-shaped bending part 7 drives the extension part 8 to be clamped inside the sealing groove 5, and the V-shaped bending part 7 is reset by the compression spring 12, so that the protrusion 9 outside the extension part 8 is clamped inside the groove 10, which can not only better fix the sealing ring 6, but also form a tighter fit between the sealing ring 6 and the sealing groove 5, which helps to further improve the sealing effect, and the steel ball 3 can be positioned and pressed by the inner and outer rings of the bearing, which helps to better fix and position the steel ball 3, and can effectively make the steel ball 3 roll stably on the inner and outer rings of the bearing, so that the bearing can withstand radial and axial loads at the same time. When the steel ball 3 needs to be lubricated, the lubricating oil can be injected through the straight-through hole 13, and the lubricating oil enters the inner ring groove from the straight-through hole 13 and lubricates the steel ball 3.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-row angular contact ball bearing of a composite structure, comprising a bearing outer ring (1), characterized in that: A bearing inner ring (2) is arranged on the inner side of the bearing outer ring (1), a steel ball (3) is slidably connected to the outside of the bearing inner ring (2), a steel ball (3) is rotatably connected to the inner side of the bearing outer ring (1), a retaining frame (4) is arranged on the outside of the steel ball (3), a sealing groove (5) is opened on the inner side of the bearing outer ring (1), a sealing groove (5) is opened on the outside of the bearing inner ring (2), a sealing ring (6) is arranged inside the sealing groove (5), and a dustproof component is arranged inside the sealing groove (5), and the dustproof component is used to seal the bearing.

2. A double-row angular contact ball bearing of composite structure according to claim 1, characterized in that: The dustproof component comprises a V-shaped bending portion (7), wherein the V-shaped bending portion (7) is arranged inside the sealing groove (5), both sides of the V-shaped bending portion (7) are fixedly connected to an extension portion (8), and the outside of the extension portion (8) is fixedly connected to a protrusion (9).

3. A double-row angular contact ball bearing of composite structure according to claim 1, characterized in that: The inner part of the bearing outer ring (1) is provided with a groove (10).

4. A double-row angular contact ball bearing of composite structure according to claim 2, characterized in that: The protrusions (9) are all arranged inside the grooves (10).

5. The double-row angular contact ball bearing of composite structure according to claim 2, characterized in that: The inner side of the V-shaped bending portion (7) is fixedly connected with a connecting column (11), and the outer side of the connecting column (11) is provided with a compression spring (12).

6. A double-row angular contact ball bearing of composite structure according to claim 5, characterized in that: The compression springs (12) are all fixedly connected to the inner side of the V-shaped bending portion (7).

7. According to the double-row angular contact ball bearing of composite structure as claimed in claim 1, a through hole (13) is provided on the top of the bearing outer ring (1), and a threaded plug (14) is connected to the inner thread of the through hole (13).

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