Non-standard bearing sealing structure

Abstract

The utility model relates to the field of non-standard bearing sealing, and discloses a non-standard bearing sealing structure which comprises an outer ring, a plurality of rolling balls are rotatably connected to the interior of the outer ring, retainers are fixedly connected to the exteriors of the rolling balls, an inner ring is fixedly connected to the rear ends of the exteriors of the rolling balls, and an oil groove is formed in the inner ring. The outer portion of the inner ring is slidably connected with a sealing cover, the bottom end of the sealing cover is fixedly connected with a sealing ring, the top end of the interior of the sealing cover is fixedly connected with a telescopic rod, the outer portion of the telescopic rod is fixedly connected with a spring, the bottom end of the telescopic rod is fixedly connected with a static ring, and the bottom end of the interior of the sealing cover is slidably connected with a dynamic ring. According to the utility model, the sealing structure can effectively prevent dust, metal chips, sand grains and other solid particles in the external environment from entering the bearing, and can reduce the leakage of lubricating grease in the bearing in the operation process.

Description

Technical Field

[0001] The utility model relates to the field of non-standard bearing seals, in particular to a non-standard bearing seal structure. Background Art

[0002] Non-standard bearing seals are designed specifically for specific needs and differ from standard bearing seals. Lip seals are typically made of rubber or other elastic materials, with the sealing lip in close contact with the rotating shaft. In non-standard designs, the shape, material, and mounting method of the lip seal can be specifically designed.

[0003] In the existing technology, during the operation of some non-standard bearings, solid particles such as dust, metal chips, and sand in the surrounding environment can easily enter the bearings. These solid particles will act as abrasives, aggravating the wear between the various bearing components and causing scratches and pits on the surface of the bearing raceways and rolling elements, thereby reducing the rotation accuracy of the bearings, increasing the rotation resistance, and shortening the service life of the bearings. Therefore, a non-standard bearing sealing structure is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a non-standard bearing sealing structure, which aims to improve the problem that some non-standard bearings in the prior art cannot be sealed.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A non-standard bearing sealing structure comprises an outer ring, wherein a plurality of rolling balls are rotatably connected to the interior of the outer ring, the exteriors of the plurality of rolling balls are fixedly connected to a retaining frame, the exterior rear ends of the plurality of rolling balls are fixedly connected to the inner ring, an oil groove is provided inside the inner ring, a sealing cover is slidably connected to the exterior of the inner ring, a sealing ring is fixedly connected to the bottom end of the sealing cover, a telescopic rod is fixedly connected to the top end of the interior of the sealing cover, a spring is fixedly connected to the exterior of the telescopic rod, a static ring is fixedly connected to the bottom end of the telescopic rod, a dynamic ring is slidably connected to the interior of the sealing cover, and a fixing assembly for connection is fixedly connected to the interior of the sealing cover;

[0007] As a further description of the above technical solution:

[0008] The fixing assembly includes a bolt, the outer thread of the bolt is connected to the inside of the sealing cover, the outer thread of the bolt is connected to a nut, and the outer bottom end of the bolt is fixedly connected to a baffle;

[0009] As a further description of the above technical solution:

[0010] The outer sleeve of the sealing cover is provided with a metal shell, the inner sleeve of the sealing cover is provided with a metal sheet, the inner sleeve of the sealing cover is provided with a gasket, the inner sleeve of the sealing ring is provided with a rubber sheet, and the inner sleeve of the sealing ring is provided with a fiber sheet;

[0011] As a further description of the above technical solution:

[0012] The material of the metal shell is stainless steel, the material of the metal sheet is elastic steel, and the material of the gasket is asbestos gasket;

[0013] As a further description of the above technical solution:

[0014] The material of the rubber sheet is rubber, and the material of the fiber sheet is fiber;

[0015] As a further description of the above technical solution:

[0016] The outside of the sealing cover contacts the inside of the outer ring, and the bottom end of the static ring contacts the top end of the outside of the dynamic ring;

[0017] As a further description of the above technical solution:

[0018] The outer portion of the sealing ring is engaged with the inner portion of the oil groove, and the outer portion of the sealing ring is in contact with the outer portion of the inner ring;

[0019] As a further description of the above technical solution:

[0020] The top end of the spring is fixedly connected to the inner top end of the sealing cover, and the bottom end of the spring is fixedly connected to the outer top end of the static ring.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the sealing cover is sealed on the outside of the outer ring and the inner ring, and then the dynamic ring contacts the inner ring. The force of the inner ring's rotation will make the dynamic ring contact with the static ring for sealing. The sealing structure can effectively prevent dust, metal chips, sand and other solid particles in the external environment from entering the interior of the bearing, and can reduce the leakage of grease inside the bearing during operation.

[0023] 2. In the utility model, the metal shell is sleeved on the outside of the sealing cover, and the metal sheet and gasket are inside the sealing cover, as well as the rubber sheet and fiber sheet of the sealing ring. The stainless steel has good corrosion resistance, the elastic metal sheet can automatically adjust according to the external pressure and internal temperature changes, and the asbestos gasket can fill the microscopic uneven surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1This is a three-dimensional schematic diagram of a non-standard bearing sealing structure proposed by the utility model;

[0025] Figure 2 This is a schematic diagram of the outer ring structure of a non-standard bearing sealing structure proposed by the utility model;

[0026] Figure 3 This is a schematic diagram of the metal sheet structure of a non-standard bearing sealing structure proposed by the utility model;

[0027] Figure 4 This is a schematic diagram of the rubber sheet structure of a non-standard bearing sealing structure proposed by the utility model;

[0028] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0029] Legend:

[0030] 1. Outer ring; 2. Rolling ball; 3. Cage; 4. Inner ring; 5. Oil groove; 6. Sealing cover; 7. Metal shell; 8. Metal sheet; 9. Washer; 10. Sealing ring; 11. Rubber sheet; 12. Fiber sheet; 13. Telescopic rod; 14. Spring; 15. Static ring; 16. Dynamic ring; 17. Bolt; 18. Nut; 19. Baffle. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] Reference Figure 1 、 Figure 2 、 Figure 5The utility model provides an embodiment of a non-standard bearing sealing structure, including an outer ring 1, a plurality of rolling balls 2 are rotatably connected to the inner part of the outer ring 1, a retaining frame 3 is fixedly connected to the outer parts of the plurality of rolling balls 2, and an inner ring 4 is fixedly connected to the outer rear end of the plurality of rolling balls 2. The inner ring 4 is the part that directly contacts the shaft. When the shaft starts to rotate, the inner ring 4 will also rotate accordingly. An oil groove 5 is provided inside the inner ring 4, which can store lubricating oil. During the operation of the bearing, the lubricating oil can lubricate the contact surfaces between the rolling balls 2, the inner ring 4 and the outer ring 1, thereby reducing wear and extending the service life of the bearing. The outer part of the inner ring 4 is slidably connected to a sealing cover 6. The sealing cover 6 is designed to prevent external dust, impurities and other contaminants from entering the bearing, while also preventing internal lubricating oil from leaking. The outer part of the sealing cover 6 contacts the inner part of the outer ring 1. This close contact can further enhance the sealing effect. The bottom end of the sealing cover 6 is fixedly connected to a sealing ring 10. The outer part of the sealing ring 10 engages with the inner part of the oil groove 5. The outer part of the sealing ring 10 contacts the outer part of the inner ring 4. This engaging design allows the sealing ring 10 to fit more closely into the oil groove 5, effectively preventing lubricating oil leakage. At the same time, the outer part of the sealing ring 10 contacts the outer part of the inner ring 4, forming a double seal, further improving the sealing performance.

[0033] The inner top end of the sealing cover 6 is fixedly connected to the telescopic rod 13, and the outer part of the telescopic rod 13 is fixedly connected to the spring 14. The design of the spring 14 enables the telescopic rod 13 to have the function of elastic expansion and contraction. The bottom end of the telescopic rod 13 is fixedly connected to the static ring 15, the top end of the spring 14 is fixedly connected to the inner top end of the sealing cover 6, and the bottom end of the spring 14 is fixedly connected to the outer top end of the static ring 15. The inner bottom end of the sealing cover 6 is slidably connected to the dynamic ring 16. The dynamic ring 16 can slide flexibly according to the actual situation inside the bearing and cooperate with the static ring 15 to further improve the sealing effect. The inner part of the sealing cover 6 is fixedly connected with a fixing component for connection. The fixing component includes a bolt 17. The bolt 17 is a common connecting part with the characteristics of firm connection and easy installation and disassembly. The external thread of the bolt 17 is connected to the inside of the sealing cover 6, the bottom end of the static ring 15 contacts the outer top end of the dynamic ring 16, the external thread of the bolt 17 is connected with a nut 18, and the outer bottom end of the bolt 17 is fixedly connected with a baffle 19.

[0034] Reference Figures 2 to 4The outer sleeve of the sealing cover 6 is provided with a metal shell 7, which is made of stainless steel. Stainless steel has excellent corrosion resistance. Whether in a humid environment or when it may come into contact with some slightly corrosive media, the stainless steel shell can maintain its own stability, thereby effectively protecting the internal sealing cover 6 from corrosion and extending the service life of the entire sealing structure. The interior of the sealing cover 6 is provided with a metal sheet 8, which is made of elastic steel. It has good elasticity. When the sealing structure is subjected to external pressure changes or internal temperature fluctuations, the elastic steel sheet can undergo elastic deformation according to these changes. The interior of the sealing cover 6 is provided with a gasket 9, which is made of asbestos gasket. The gasket 9 can maintain stable performance and will not soften or fail due to high temperature.

[0035] A rubber sheet 11 is provided inside the sealing ring 10. The material of the rubber sheet 11 is rubber. This property enables it to fit tightly on the sealing interface. Whether facing a smooth surface or a surface with slight bumps and depressions, the rubber sheet 11 can fill these uneven places through its own elastic deformation to form a continuous sealing surface, effectively preventing the leakage of fluid or gas. A fiber sheet 12 is provided inside the sealing ring 10. The material of the fiber sheet 12 is fiber, which can enhance the tensile strength of the sealing ring 10. When the sealing ring 10 is subjected to external tension or internal pressure, the fiber sheet 12 can prevent the sealing ring 10 from excessive deformation or tearing, thereby ensuring the integrity and sealing of the sealing structure.

[0036] Working principle: First, when the bearing is operating, the junction of the outer ring 1 and the rolling ball 2 is sealed through the sealing cover 6, and then the static ring 15 is connected through the telescopic rod 13 inside the sealing cover 6, and then the static ring 15 is fixed by the spring 14 with the telescopic rod 13, and then the dynamic ring 16 slides inside the sealing cover 6, and then the inner ring 4 rotates, which will make the inner ring 4 contact with the dynamic ring 16, and then the dynamic ring 16 will generate force due to the rotation of the inner ring 4, and then compress the static ring 15, and then drive the telescopic rod 13 and the spring 14 to rebound, so as to achieve the effect of sealing the junction of the outer ring 1 and the inner ring 4.

[0037] The outside of the sealing cover 6 is equipped with a sturdy and durable metal shell 7, which has excellent strength and stability; inside the sealing cover 6, a metal sheet 8 with good elasticity and a tightly fitting gasket 9 are carefully arranged. The sealing ring 10 is composed of an extremely flexible rubber sheet 11 and a high-strength fiber sheet 12. They work together to achieve an efficient and reliable sealing effect.

[0038] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A non-standard bearing sealing structure, comprising an outer ring (1), characterized in that: The outer ring (1) is internally rotatably connected to a plurality of rolling balls (2), the exteriors of the plurality of rolling balls (2) are fixedly connected to a retaining frame (3), the exterior rear ends of the plurality of rolling balls (2) are fixedly connected to an inner ring (4), an oil groove (5) is provided inside the inner ring (4), the exterior of the inner ring (4) is slidably connected to a sealing cover (6), the bottom end of the sealing cover (6) is fixedly connected to a sealing ring (10), the interior top end of the sealing cover (6) is fixedly connected to a telescopic rod (13), the exterior of the telescopic rod (13) is fixedly connected to a spring (14), the bottom end of the telescopic rod (13) is fixedly connected to a static ring (15), the interior bottom end of the sealing cover (6) is slidably connected to a dynamic ring (16), and the interior of the sealing cover (6) is fixedly connected to a fixed component for connection.

2. The non-standard bearing sealing structure according to claim 1, characterized in that: The fixing assembly comprises a bolt (17), the outer thread of the bolt (17) is connected to the inside of the sealing cover (6), the outer thread of the bolt (17) is connected to a nut (18), and the outer bottom end of the bolt (17) is fixedly connected to a baffle (19).

3. The non-standard bearing sealing structure according to claim 1, characterized in that: The sealing cover (6) is provided with a metal shell (7) on the outside, a metal sheet (8) is provided on the inside of the sealing cover (6), a gasket (9) is provided on the inside of the sealing cover (6), a rubber sheet (11) is provided on the inside of the sealing ring (10), and a fiber sheet (12) is provided on the inside of the sealing ring (10).

4. The non-standard bearing sealing structure according to claim 3, characterized in that: The material of the metal shell (7) is stainless steel, the material of the metal sheet (8) is elastic steel, and the material of the gasket (9) is asbestos gasket.

5. The non-standard bearing sealing structure according to claim 3, characterized in that: The material of the rubber sheet (11) is rubber, and the material of the fiber sheet (12) is fiber.

6. The non-standard bearing sealing structure according to claim 1, characterized in that: The outside of the sealing cover (6) contacts the inside of the outer ring (1), and the bottom end of the static ring (15) contacts the top end of the outside of the dynamic ring (16).

7. The non-standard bearing sealing structure according to claim 1, characterized in that: The outside of the sealing ring (10) is engaged with the inside of the oil groove (5), and the outside of the sealing ring (10) is in contact with the outside of the inner ring (4).

8. The non-standard bearing sealing structure according to claim 1, characterized in that: The top end of the spring (14) is fixedly connected to the inner top end of the sealing cover (6), and the bottom end of the spring (14) is fixedly connected to the outer top end of the static ring (15).

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