Bearing sealing structure
By designing a combined structure of double-layer sealing ring and sealing gasket in the bearing, the cumbersome operation of removing the end cover and adding lubricating oil in the prior art is solved, and the good sealing and convenient oil injection effect of the bearing are achieved.
Patent Information
- Application Number
- CN202422282412.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-18
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-18
AI Technical Summary
Existing bearings need to be removed when adding lubricating oil, which is complicated to operate and frequently disassemble and assemble, resulting in poor sealing effect.
A bearing sealing structure is designed, using a combination of double-layer sealing rings and sealing gaskets to achieve sealing effect through the oil inlet pipelines, while facilitating oil filling operations and avoiding frequent disassembly and assembly of end caps.
It achieves good sealing of the bearing, prevents dust from entering, and simplifies the lubricant addition process, avoiding the problem of poor sealing effect.
Smart Images
Figure CN223089805U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of bearings, and more specifically, to a bearing sealing structure. Background Art
[0002] A bearing is an important component in mechanical equipment. Its main functions are to support a rotating mechanical body, reduce the friction coefficient during its movement, and ensure its rotational accuracy. Bearings can be classified into two categories: rolling bearings and sliding bearings. The daily maintenance of bearings includes lubrication, cleaning, installation and disassembly, operation monitoring, storage and protection. The reasons for bearing wear include spalling, burning, crack defects, cage damage, etc. The treatment methods are to check the machining accuracy of the shaft and bearing housing, check the type of lubricant to ensure the injection volume, set an appropriate interference fit, and check the material, etc.
[0003] The existing oil-injected bearings are provided with end covers to prevent dust from entering. However, after the bearings have been used for a long time, when lubricating oil needs to be added, the end covers need to be disassembled first, then the oil is added, and then the end covers are reinstalled. This is not only very troublesome, but also frequent disassembly of the end covers will result in poor sealing effect of the end covers.
[0004] Therefore, we make improvements on this and propose a bearing sealing structure. Summary of the Utility Model
[0005] The purpose of the utility model is to address the current situation where when lubricating oil needs to be added, the end covers need to be disassembled first, then the oil is added, and then the end covers are reinstalled. This is not only very troublesome, but also frequent disassembly of the end covers will result in poor sealing effect of the end covers.
[0006] To achieve the above-mentioned purpose of the utility model, the following technical solutions are provided:
[0007] A bearing sealing structure is provided to improve the above problems.
[0008] Specifically, this application is as follows:
[0009] It includes an outer ring, an inner ring, rollers and a cage. The outer ring is rotatably connected to the inner ring through the rollers. The cage is movably connected to the outside of the rollers. An inner clamping groove is formed on the inner wall of the outer ring, and an outer clamping groove is formed on the outer wall of the inner ring. End covers are provided on both end faces of the outer ring. A connecting column is fixedly installed on the side wall of the end cover. A first sealing ring is fixedly connected to the connecting column. An oil inlet pipe is provided on the end cover. A sealing plug is clamped in the oil inlet pipe. A first sealing pad is fixedly connected to the sealing plug. A second sealing ring is fixedly connected to one end of the sealing plug. Ball catches are provided on the surface of the sealing plug.
[0010] As a preferred technical solution of this application, a second sealing pad and a third sealing pad are integrally formed on the side wall of the end cover.
[0011] As a preferred technical solution of the present application, second annular grooves are provided on both end faces of the inner ring, and the second annular grooves are matched with the second gaskets.
[0012] As a preferred technical solution of the present application, third annular grooves are provided on both end faces of the outer ring, and the third annular grooves are matched with the third gaskets.
[0013] As a preferred technical solution of the present application, a first annular groove is provided on the end cover, and the first annular groove is matched with the first gasket.
[0014] As a preferred technical solution of the present application, a spherical groove is provided in the oil inlet pipe, and the spherical groove is matched with the clamping ball.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0016] In the solution of the present application:
[0017] 1. By arranging the outer end of the first sealing ring on the end cover to be clamped in the inner clamping groove of the outer ring, and at the same time, the inner end of the first sealing ring is clamped in the outer clamping groove of the inner ring, and at the same time, the second gasket on the end cover is clamped into the second annular groove of the inner ring, and the third gasket on the end cover is clamped into the third annular groove of the outer ring, double-layer sealing is realized, effectively preventing dust from entering;
[0018] 2. By arranging to take out the sealing plug, enabling the second sealing ring to pass through the oil inlet pipe and move out along the oil inlet pipe, at the same time, the clamping ball disengages from the spherical groove, and at the same time, the sealing plug drives the first gasket to disengage from the first annular groove, then oil can be injected into the oil inlet pipe. It is realized that the oil injection pipe not only has a good sealing effect but also is convenient for oil injection, solving the problem in the prior art that the end cover needs to be removed every time oil is injected, and frequent removal of the end cover will result in poor sealing effect of the end cover. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural diagram of the bearing sealing structure provided by the present application;
[0020] Figure 2 is a schematic structural diagram of the bearing sealing structure provided by the present application after removing the end cover;
[0021] Figure 3 is a schematic structural diagram of the outer ring of the bearing sealing structure provided by the present application;
[0022] Figure 4 is a schematic cross-sectional structural diagram of the outer ring of the bearing sealing structure provided by the present application;
[0023] Figure 5 is a schematic structural diagram of the inner ring of the bearing sealing structure provided by the present application;
[0024] Figure 6 Schematic cross-sectional structure diagram of the inner ring of the bearing seal structure provided by this application;
[0025] Figure 7 Schematic end cover structure diagram of the bearing seal structure provided by this application;
[0026] Figure 8 The bearing seal structure provided by this application Figure 7 Enlarged structure diagram at position A in
[0027] Figure 9 Schematic front structure diagram of the end cover of the bearing seal structure provided by this application;
[0028] Figure 10 The bearing seal structure provided by this application Figure 9 Enlarged structure diagram at position A in
[0029] Figure 11 Schematic diagram of the seal plug structure of the bearing seal structure provided for the application.
[0030] Markings in the figure:
[0031] 1. Outer ring; 2. Inner ring; 3. Roller; 4. Cage; 5. End cover; 6. Connecting column; 7. First sealing ring; 8. Inner card slot; 9. Outer card slot; 10. Third annular groove; 11. Second annular groove; 12. Oil inlet pipe; 13. Seal plug; 14. Third gasket; 15. Second gasket; 16. First gasket; 17. Second sealing ring; 18. Ball; 19. Spherical groove; 20. First annular groove. Detailed implementation manners
[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some but not all of the embodiments of the present utility model.
[0033] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the present utility model to be protected, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.
[0035] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is habitually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.
[0037] Embodiment:
[0038] As Figures 1-11 shown, this embodiment provides a bearing sealing structure, which includes an outer ring 1, an inner ring 2, rollers 3 and a cage 4. The outer ring 1 is rotatably connected to the inner ring 2 through the rollers 3, and the cage 4 is movably connected to the outside of the rollers 3. An inner clamping groove 8 is formed on the inner wall of the outer ring 1, and an outer clamping groove 9 is formed on the outer wall of the inner ring 2. End caps 5 are provided on both end faces of the outer ring 1. A connecting column 6 is fixedly installed on the side wall of the end cap 5, and a first sealing ring 7 is fixedly connected to the connecting column 6. During assembly, the outer end of the first sealing ring 7 on the end cap 5 is clamped in the inner clamping groove 8 of the outer ring 1, and at the same time, the inner end of the first sealing ring 7 is clamped in the outer clamping groove 9 of the inner ring 2; an oil inlet pipe 12 is formed on the end cap 5, a sealing plug 13 is clamped in the oil inlet pipe 12, a first sealing pad 16 is fixedly connected to the sealing plug 13, a second sealing ring 17 is fixedly connected to one end of the sealing plug 13, and a clamping ball 18 is provided on the surface of the sealing plug 13.
[0039] In order to make the end cap 5 more sealed, a second sealing pad 15 and a third sealing pad 14 are integrally formed on the side wall of the end cap 5.
[0040] In order to make the end cap 5 more sealed, second annular grooves 11 are formed on both end faces of the inner ring 2. The second annular grooves 11 cooperate with the second sealing pads 15, so that the second sealing pads 15 on the end cap 5 are clamped into the second annular grooves 11 of the inner ring 2.
[0041] In order to make the end cap 5 more sealed, third annular grooves 10 are formed on both end faces of the outer ring 1. The third annular grooves 10 cooperate with the third sealing pads 14, so that the third sealing pads 14 on the end cap 5 are clamped into the third annular grooves 10 of the outer ring 1.
[0042] In order to seal the oil inlet, a first annular groove 20 is formed in the end cover 5, and the first annular groove 20 cooperates with the first gasket 16.
[0043] In order to seal the oil inlet pipe 12, a spherical groove 19 is formed in the oil inlet pipe 12, and the spherical groove 19 cooperates with the clamping ball 18.
[0044] Specifically, when assembling this bearing sealing structure: pick up the end cover 5, snap the outer end of the first sealing ring 7 on the end cover 5 into the inner clamping groove 8 of the outer ring 1, and at the same time snap the inner end of the first sealing ring 7 into the outer clamping groove 9 of the inner ring 2. At the same time, snap the second gasket 15 on the end cover 5 into the second annular groove 11 of the inner ring 2, and snap the third gasket 14 on the end cover 5 into the third annular groove 10 of the outer ring 1, then the assembly of the end cover 5 is completed;
[0045] When oil needs to be injected, remove the sealing plug 13, pass the second sealing ring 17 through the oil inlet pipe 12 and move it out along the oil inlet pipe 12. At the same time, the clamping ball 18 disengages from the spherical groove 19, and at the same time, the sealing plug 13 drives the first gasket 16 to disengage from the first annular groove 20, then oil can be injected into the oil inlet pipe 12; not only the sealing effect is good, but also it is convenient to inject oil into it, solving the problem in the prior art that the end cover 5 needs to be removed every time oil is injected, and frequently removing the end cover 5 will result in poor sealing effect of the end cover 5.
[0046] All technical features in this embodiment can be freely combined according to actual needs.
[0047] The above embodiment is a preferred implementation scheme of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.
Claims
1. A bearing sealing structure, comprising an outer ring (1), an inner ring (2), rollers (3) and a cage (4), wherein the outer ring (1) is rotatably connected to the inner ring (2) through the rollers (3), and the cage (4) is movably connected to the outside of the rollers (3), characterized in that, The inner wall of the outer ring (1) is provided with an inner clamping groove (8), the outer wall of the inner ring (2) is provided with an outer clamping groove (9), end caps (5) are arranged on both end faces of the outer ring (1), a connecting column (6) is fixedly installed on the side wall of the end cap (5), a first sealing ring (7) is fixedly connected to the connecting column (6), an oil inlet pipe (12) is arranged on the end cap (5), a sealing plug (13) is clamped in the oil inlet pipe (12), a first sealing gasket (16) is fixedly connected to the sealing plug (13), a second sealing ring (17) is fixedly connected to one end of the sealing plug (13), and a clamping ball (18) is arranged on the surface of the sealing plug (13).
2. The bearing sealing structure according to claim 1, characterized in that, A second sealing gasket (15) and a third sealing gasket (14) are integrally formed on the side wall of the end cap (5).
3. A bearing sealing structure according to claim 1, characterized in that, Second annular grooves (11) are formed on both end faces of the inner ring (2), and the second annular grooves (11) are matched with the second sealing gasket (15).
4. A bearing seal structure according to claim 1, characterized in that, Third annular grooves (10) are formed on both end faces of the outer ring (1), and the third annular grooves (10) are matched with the third sealing gasket (14).
5. A bearing seal structure according to claim 1, characterized in that, A first annular groove (20) is formed on the end cap (5), and the first annular groove (20) is matched with the first sealing gasket (16).
6. The bearing seal structure according to claim 1, wherein, A spherical groove (19) is formed in the oil inlet pipe (12), and the spherical groove (19) is matched with the clamping ball (18).