Precise bearing of high-precision high-speed vortex fan

Abstract

The high-precision high-speed vortex fan precision bearing comprises an inner ring, an outer ring, a ball and a retainer, lubricating oil is pre-stored in an oil storage cavity, the lubricating oil continuously converges into a confluence groove in the use process and then is output to the outer wall of the inner ring through an oil guide cavity, the bearing is lubricated, the lubricating oil can be added through an oil injection cavity, and the bearing is prevented from being damaged. And the sealing plug seals the orifice of the oil injection cavity, so that the blockage phenomenon caused by entering of impurities can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing devices, in particular to a high-precision and high-speed vortex fan precision bearing. Background Art

[0002] Bearings are an important component of modern power machinery. Common bearing structures include the configuration of inner ring, outer ring, ball, and cage. In order to maintain the stability of bearing operation, the bearings usually need to be pre-lubricated. After the bearings are installed, the lubricating oil gradually decreases with use. Later lubrication requires the bearings to be disassembled, which is more troublesome and needs to be improved. Utility Model Content

[0003] To solve at least one of the above technical deficiencies, the present invention provides the following technical solutions:

[0004] The present application document discloses a high-precision, high-speed vortex fan precision bearing, comprising an inner ring, an outer ring, balls and a retaining frame, wherein the balls and the matching retaining frame are located between the inner ring and the outer ring, and a plurality of oil storage cavities are formed in the inner ring, a confluence groove is provided at the cavity wall in the middle of the oil storage cavity facing the outer wall of the inner ring, and an oil guide cavity extending to the outer wall of the inner ring is provided at the bottom wall of the confluence, an oil injection cavity extending to the end face of the inner ring is provided at the end of the oil storage cavity, a sealing plug formed of an elastic material is provided at the orifice of the oil injection cavity, and the aperture of the oil injection cavity is smaller than the aperture of the oil storage cavity.

[0005] In this solution, lubricating oil is pre-stored in the oil storage chamber. During use, the lubricating oil continuously flows into the confluence groove, and then is output to the outer wall of the inner ring through the oil guide chamber to lubricate the bearing. Lubricating oil can be added through the oil filling chamber, which is easy to operate. The sealing plug seals the oil filling chamber orifice to prevent debris from entering and causing blockage.

[0006] Furthermore, the oil injection cavity and the oil guide cavity have the same aperture. The small aperture of the oil injection cavity helps to limit the outflow of oil in the oil storage cavity, and the small aperture of the oil guide cavity helps to limit the flow rate and provide continuous lubrication.

[0007] Furthermore, the longitudinal cross-section of the oil storage cavity is rectangular, has a large capacity, and is easy to shape.

[0008] Furthermore, a T-shaped embedding groove is provided at the orifice of the oil filling chamber and a T-shaped sealing plug is embedded in the embedding groove at the orifice of the oil filling chamber. The diameter of the horizontal end of the embedding groove is larger than the aperture of the oil filling chamber and its longitudinal end is located at the end face of the inner ring. The T-shaped sealing plug cooperates with the T-shaped embedding groove to better seal the orifice.

[0009] Furthermore, dust covers are provided on both sides between the inner ring and the outer ring to prevent debris from entering between the inner ring and the outer ring, thereby improving the stability of operation.

[0010] Furthermore, the outer edge of the dust cover is connected to the inner wall of the outer ring by laser welding, and the inner edge of the dust cover is connected to the outer wall of the inner ring. During laser welding, the solder melts and fixes the dust cover to the outer ring. The outer ring is not subjected to force, the outer diameter of the bearing is not easy to change, and the bearing has high precision.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The utility model improves the structure of the bearing, and adds an oil storage chamber, an oil guide chamber, an oil injection chamber and a sealing plug, etc., which can continuously lubricate the bearing, improve the stability of the bearing operation, and make it easier to operate the oiling in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 is a schematic structural diagram of the bearing in Example 1;

[0015] Figure 2 It is a schematic diagram of the enlarged structure of part A;

[0016] Wherein, the accompanying drawings are marked as follows:

[0017] 1. Outer ring; 2. Inner ring; 3. Ball; 4. Cage; 5. Dust cover; 6. Oil storage chamber; 7. Confluence groove; 8. Oil guide chamber; 9. Oil filling chamber; 10. Sealing plug. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] Example 1

[0020] like Figure 1 、 Figure 2 As shown, the high-precision, high-speed vortex blower precision bearing in this example includes an inner ring 2, an outer ring 1, balls 3 and a retaining frame 4. The balls 3 and the matching retaining frame 4 are located between the inner ring 2 and the outer ring 1. This part can be based on the conventional structure and will not be described in detail.

[0021] In this example, multiple oil storage cavities 6 are formed in the inner ring 2, such as two, three, four, etc., which are arranged relatively or at equal intervals, such as Figure 1As shown, the oil storage chamber 6 is rectangular in the longitudinal cross-section. The oil storage chamber 6 has a concave concave conduit groove 7 at the middle of the chamber wall facing the outer wall of the inner ring. The bottom wall of the confluence groove 7 is formed with an oil guide chamber 8. The end of the oil guide chamber 8 extends to the outer wall of the inner ring 2. The lubricating oil in the oil storage chamber 6 continuously flows into the confluence groove 7, and then flows to the outer wall of the inner ring through the oil guide chamber.

[0022] The end of the oil storage cavity 6 is formed into an oil filling cavity 9, which extends to the end surface of the inner ring 2. Figure 1 As shown, an oil filling cavity 9 can be formed at the left end or the right end of the oil storage cavity 6, which can be selected according to needs. The aperture of the oil filling cavity 9 is smaller than the aperture of the oil storage cavity 6, which helps to limit the lubricating oil in the oil storage cavity from flowing into the oil filling cavity. In this example, a sealing plug 10 is installed at the opening of the oil filling cavity 9 on the end face of the inner ring 2, such as a sealing plug made of rubber. The sealing plug prevents debris from clogging the oil filling cavity.

[0023] In order to achieve better sealing, in this example, a T-shaped embedding groove is formed at the orifice of the oil filling chamber 9 and a T-shaped sealing plug 10 is embedded in the embedding groove of the orifice of the oil filling chamber 9. The diameter of the horizontal end of the embedding groove is larger than the aperture of the oil filling chamber 9 and is connected to the oil filling chamber. The longitudinal end of the embedding groove is at the end face of the inner ring. When installing, the sealing plug can be directly embedded in the embedding groove. When filling oil, the oil filling needle can be inserted into and through the sealing plug. After the oil filling needle is removed, the elastic material is reset and the pores are closed. When the bearing is heated, the sealing plug can be caused to expand, and then the lubricating oil in the oil storage chamber can be caused to flow out of the oil guide chamber.

[0024] In this example, the diameter of the oil guide cavity 8 is consistent with the diameter of the oil filling cavity 9. Limiting the diameter of the oil guide cavity helps to limit the flow rate and promote continuous supply of lubricating oil.

[0025] In this example, to prevent debris from entering between the inner and outer rings, dust covers 5 are installed on both sides between the inner ring 2 and the outer ring 1, and the outer edge of the dust cover 5 is laser welded to the inner wall of the outer ring 1, and the inner edge of the dust cover 5 is connected to the outer wall of the inner ring 2. Laser welding to fix the dust cover helps reduce the force on the outer ring, the outer diameter of the bearing is not easily changed, and the bearing precision is high.

[0026] The above are only preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. High-precision, high-speed vortex fan precision bearing, including an inner ring, an outer ring, balls and a cage, wherein the balls and the matching cage are located between the inner ring and the outer ring, characterized in that: A plurality of oil storage cavities are formed in the inner ring, a confluence groove is provided at the cavity wall of the middle of the oil storage cavity facing the outer wall of the inner ring, and the bottom wall of the confluence is provided with an oil guide cavity extending to the outer wall of the inner ring, an oil injection cavity extending to the end face of the inner ring is provided at the end of the oil storage cavity, a sealing plug formed of elastic material is provided at the orifice of the oil injection cavity, and the aperture of the oil injection cavity is smaller than the aperture of the oil storage cavity.

2. The high-precision, high-speed vortex blower precision bearing according to claim 1, characterized in that: The oil injection cavity and the oil guide cavity have the same aperture.

3. The high-precision, high-speed vortex blower precision bearing according to claim 1, characterized in that: The longitudinal cross-section of the oil storage cavity is rectangular.

4. The high-precision, high-speed vortex blower precision bearing according to claim 1, characterized in that: A T-shaped embedding groove is provided at the orifice of the oil filling cavity and a T-shaped sealing plug is embedded in the embedding groove of the orifice of the oil filling cavity. The horizontal end diameter of the embedding groove is larger than the aperture of the oil filling cavity and its longitudinal end is located at the end face of the inner ring.

5. The high-precision, high-speed vortex blower precision bearing according to claim 1, characterized in that: Dust covers are provided on both sides between the inner ring and the outer ring.

6. The high-precision, high-speed vortex blower precision bearing according to claim 5, characterized in that: The outer edge of the dust cover is connected to the inner wall of the outer ring by laser welding, and the inner edge of the dust cover is connected to the outer wall of the inner ring.

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