Dustproof sealing structure for bearing

Abstract

The utility model relates to the technical field of bearings, in particular to a dustproof sealing structure for a bearing, which comprises a sealing plate, the sealing plate is mounted between a bearing inner ring and a bearing outer ring, a ball frame component is arranged between the bearing inner ring and the bearing outer ring, an oil storage cavity is arranged in the sealing plate, lubricating oil is filled in the oil storage cavity, and the ball frame component is arranged in the oil storage cavity. An oil seepage hole is formed in the surface of the sealing plate and communicates with the oil storage cavity. The sealing device has the beneficial effects that the sealing plate is tightly matched with the edge groove I and the edge groove II, and the sealing ring fixed on the surface of the sealing plate is rotationally connected with the limiting groove, so that an internal gap of the bearing is effectively shielded, dust and impurities are effectively prevented from entering the bearing, and the cleanliness of the bearing is ensured. The oil storage cavity formed in the sealing plate can contain lubricating oil, and the oil leakage holes are communicated with the ball frame assembly, so that the lubricating oil can continuously and uniformly permeate to the surfaces of the balls and the raceway, and automatic lubrication is achieved.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically to a dustproof sealing structure for bearings. Background Technology

[0002] In mechanical transmission systems, bearings, as critical rotating components, directly affect the overall system's operating efficiency and lifespan. However, during operation, bearings are prone to accumulating dust and impurities due to high-speed rotation and the influence of the external environment. These contaminants not only increase bearing friction and wear but may also lead to premature bearing failure. Furthermore, the internal balls and raceways of the bearing require proper lubrication to reduce friction and wear and improve operating efficiency.

[0003] Traditional bearing dust seals typically use simple dust covers or sealing rings to prevent dust from entering. However, these structures often lack lubrication, requiring the addition of lubricant or periodic manual application, which is cumbersome and inefficient. Furthermore, after prolonged use, the sealing effect of traditional dust seals gradually decreases due to aging and wear of the seals, failing to meet the requirements for long-term stable operation. Utility Model Content

[0004] The purpose of this invention is to provide a dustproof sealing structure for bearings to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dustproof sealing structure for bearings, comprising a sealing plate, the sealing plate being installed between the inner ring and the outer ring of the bearing, and a ball bearing cage assembly being provided between the inner ring and the outer ring of the bearing; the sealing plate having an oil storage cavity inside, the oil storage cavity being filled with lubricating oil; and the sealing plate having oil seepage holes on its surface, the oil seepage holes being connected to the oil storage cavity.

[0006] Preferably, the inner ring of the bearing has a side groove on both sides, the side groove is an annular groove, and a screw is screwed to the surface of the inner ring of the bearing, one end of the screw is screwed to the surface of the side groove, and the inner ring diameter of the sealing plate is equal to the inner ring diameter of the side groove.

[0007] Preferably, the outer ring of the bearing is provided with a second side groove on both sides, the second side groove being an annular groove, and the outer ring diameter of the sealing plate being equal to the outer ring diameter of the second side groove.

[0008] Preferably, a sealing ring is fixed to the surface of the sealing plate, and the sealing ring is rotatably connected in the limiting groove. The limiting groove is opened on the surface of the second side groove and is an annular groove.

[0009] Preferably, the oil storage cavity is an annular groove, and there are multiple oil leakage holes which are arranged in a circular pattern. An oil absorption cotton sheet is fixed inside the oil storage cavity. The oil absorption cotton sheet is a circular ring plate with a "匚"-shaped cross-section, and the oil absorption cotton sheet covers the multiple oil leakage holes.

[0010] Preferably, an oil injection hole is opened on the surface of the sealing plate. The oil injection hole is connected to the oil storage cavity, and a rubber block is fixed inside the oil injection hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The dust-proof sealing structure for bearings proposed by the present utility model realizes effective shielding of the internal voids of the bearings through the tight fit of the sealing plate with the first side groove and the second side groove, and the rotational connection of the sealing ring fixed on the surface of the sealing plate with the limiting groove, effectively blocking the entry of dust and impurities and ensuring the cleanliness of the bearings. The oil storage cavity arranged inside the sealing plate can hold lubricating oil, which is connected to the ball cage assembly through the oil leakage holes, enabling the lubricating oil to continuously and evenly penetrate to the surfaces of the balls and raceways to achieve automatic lubrication. At the same time, the oil absorption cotton sheet inside the oil storage cavity can adsorb and store the lubricating oil, ensuring rapid release when needed and improving the lubrication efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a top view of the structure of the present utility model;

[0015] Figure 3 is Figure 2 a sectional view of the structure at A-A in

[0016] Figure 4 is Figure 3 an enlarged schematic view of the structure at A in

[0017] Figure 5 is a schematic structural diagram of the sealing plate of the present utility model.

[0018] In the figure: inner ring of bearing 1, outer ring of bearing 2, ball cage assembly 3, first side groove 4, sealing plate 5, second side groove 6, screw 7, sealing ring 8, limiting groove 9, oil storage cavity 10, oil leakage hole 11, oil absorption cotton sheet 12, oil injection hole 13, rubber block 14. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to clearly and completely describe the purpose, technical solution of the present utility model, and make the advantages more clear, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of the embodiments, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0020] Please refer to Figures 1 to 5 , the present utility model provides a technical solution: a dust-proof sealing structure for a bearing, including a sealing plate 5, the sealing plate 5 is installed between the inner ring 1 and the outer ring 2 of the bearing, and there is a ball cage assembly 3 between the inner ring 1 and the outer ring 2 of the bearing. Both sides of the inner ring 1 of the bearing are provided with a first side groove 4, the first side groove 4 is an annular groove, the surface of the inner ring 1 of the bearing is screwed with a screw 7, one end of the screw 7 is screwed on the surface of the first side groove 4, the inner ring diameter of the sealing plate 5 is equal to the inner ring diameter of the first side groove 4, both sides of the outer ring 2 of the bearing are provided with a second side groove 6, the second side groove 6 is an annular groove, and the outer ring diameter of the sealing plate 5 is equal to the outer ring diameter of the second side groove 6; a sealing ring 8 is fixed on the surface of the sealing plate 5, the sealing ring 8 is rotatably connected in a limiting groove 9, the limiting groove 9 is opened on the surface of the second side groove 6, and the limiting groove 9 is an annular groove.

[0021] Fasten two sealing plates 5 on both sides of the inner ring 1 of the bearing respectively. The sealing plate 5 is located between the first side groove 4 and the second side groove 6, and then use the screw 7 to fix the sealing plate 5 in the first side groove 4. At this time, the sealing plate 5 blocks the gap between the inner ring 1 and the outer ring 2 of the bearing, preventing dust from adhering to the ball cage assembly 3.

[0022] An oil storage cavity 10 is provided inside the sealing plate 5, lubricating oil is contained inside the oil storage cavity 10, an oil leakage hole 11 is opened on the surface of the sealing plate 5, the oil leakage hole 11 is communicated with the oil storage cavity 10, the oil storage cavity 10 is an annular groove, there are multiple oil leakage holes 11, and the multiple oil leakage holes 11 are arranged in a circular pattern. An oil absorption cotton sheet 12 is fixed inside the oil storage cavity 10, the oil absorption cotton sheet 12 is an annular plate with a "C" - shaped cross - section, the oil absorption cotton sheet 12 covers the multiple oil leakage holes 11, an oil injection hole 13 is opened on the surface of the sealing plate 5, the oil injection hole 13 is communicated with the oil storage cavity 10, and a rubber block 14 is fixed inside the oil injection hole 13.

[0023] When it is necessary to lubricate the balls, after sucking the lubricating oil with a syringe, insert the needle through the rubber block 14, then push the syringe to inject the lubricating oil into the oil storage cavity 10, and then pull out the needle. After the lubricating oil soaks the oil absorption cotton sheet 12, the oil absorption cotton sheet 12 adsorbing saturated lubricating oil seeps out through the oil leakage holes 11 to the surface of the ball cage assembly 3.

[0024] The usage process is detailed as follows:

[0025] Align the two sealing plates 5 with the two sides of the inner ring 1 of the bearing, ensuring that the inner ring diameter of the sealing plate 5 matches the inner ring diameter of the side groove 4, and the outer ring diameter matches the outer ring diameter of the side groove 6. Use screws 7 to screw the sealing plate 5 to the surface of the side groove 4, ensuring that the sealing plate 5 is stable and does not wobble. Confirm that the sealing ring 8 is intact and the size matches. Confirm that the oil reservoir 10 inside the sealing plate 5 is clean and free of impurities. Use a syringe to draw an appropriate amount of lubricating oil. Insert the needle through the rubber block 14 into the oil injection hole 13. Slowly push the syringe to inject lubricating oil into the oil reservoir 10 until the oil reservoir 10 is full or reaches the required amount. Remove the needle, ensuring that the rubber block 14 automatically seals the oil injection hole 13 to prevent lubricating oil leakage. After ensuring that all installation steps are correct, start the equipment and make the bearing run. Regularly check the condition of the sealing plate 5, sealing ring 8, and oil reservoir 10 to ensure that there are no leaks or damage. Depending on usage, replenish lubricating oil periodically through the oil filling hole 13 to maintain sufficient oil level in the oil reservoir 10. If any damage or signs of aging are found in the sealing plate 5, sealing ring 8, or oil-absorbing cotton sheet 12, replace them promptly. When replacing the sealing plate, clean any residual lubricating oil and impurities from the oil reservoir 10. Reinstall the new sealing plate, sealing ring, and other components according to the installation procedure described above.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dustproof sealing structure for a bearing, comprising a sealing plate (5), the sealing plate (5) being installed between an inner ring (1) and an outer ring (2) of the bearing, and a ball cage assembly (3) being provided between the inner ring (1) and the outer ring (2) of the bearing, characterized in that: An oil storage cavity (10) is provided inside the sealing plate (5). Lubricating oil is contained inside the oil storage cavity (10). Oil leakage holes (11) are formed on the surface of the sealing plate (5), and the oil leakage holes (11) are communicated with the oil storage cavity (10).

2. The dustproof sealing structure for bearings according to claim 1, characterized in that: Both sides of the inner ring (1) of the bearing are provided with first side grooves (4). The first side grooves (4) are annular grooves. A screw (7) is screwed on the surface of the inner ring (1) of the bearing. One end of the screw (7) is screwed on the surface of the first side groove (4). The inner ring diameter of the sealing plate (5) is equal to the inner ring diameter of the first side groove (4).

3. The dustproof sealing structure for bearings according to claim 1, characterized in that: Both sides of the outer ring (2) of the bearing are provided with second side grooves (6). The second side grooves (6) are annular grooves. The outer ring diameter of the sealing plate (5) is equal to the outer ring diameter of the second side groove (6).

4. A dustproof sealing structure for bearings according to claim 3, characterized in that: A sealing ring (8) is fixed on the surface of the sealing plate (5). The sealing ring (8) is rotatably connected in a limiting groove (9). The limiting groove (9) is formed on the surface of the second side groove (6). The limiting groove (9) is an annular groove.

5. A dustproof sealing structure for bearings according to claim 1, characterized in that: The oil storage cavity (10) is an annular groove. A plurality of oil leakage holes (11) are provided. The plurality of oil leakage holes (11) are arranged in a circumferential distribution. An oil absorption cotton sheet (12) is fixed inside the oil storage cavity (10). The oil absorption cotton sheet (12) is an annular plate with a "匚”-shaped cross section. The oil absorption cotton sheet (12) covers the plurality of oil leakage holes (11).

6. A dustproof sealing structure for bearings according to claim 1, characterized in that: An oil injection hole (13) is formed on the surface of the sealing plate (5). The oil injection hole (13) is communicated with the oil storage cavity (10). A rubber block (14) is fixed inside the oil injection hole (13).

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