Low-noise self-lubricating bearing structure

Abstract

The low-noise self-lubricating bearing structure comprises a bearing outer ring, a bearing ball, a bearing inner ring and a shaft body, an installation groove is formed in the inner side of the bearing inner ring, arc-shaped cooling fins are arranged in the installation groove in a clamped mode, the arc-shaped cooling fins are arranged on the outer surface of the shaft body in an attached mode, and the bearing ball is arranged in the installation groove. An oil storage groove is formed in the bearing outer ring, oil leakage holes are formed in the inner side of the bearing outer ring at equal angles, and meanwhile trigger mechanisms are arranged in the oil leakage holes. The triggering mechanism comprises a hollow column fixed to the inner wall of the oil storage tank, a spring arranged in the hollow column, a sealing plug connected with the movable end of the spring and a ball block fixed to the sealing plug. According to the low-noise self-lubricating bearing structure, the lubricating oil is arranged in the oil storage tank, and through the arrangement of the triggering mechanism, when the bearing balls roll, the lubricating oil can be added to the outer sides of the bearing balls through the oil leakage holes in the inner side of the bearing outer ring, and self-lubricating operation is conducted on the bearing.

Description

Technical Field

[0001] This utility model relates to the field of bearing-related technology, specifically a low-noise self-lubricating bearing structure. Background Technology

[0002] A bearing is a mechanical component that can limit relative motion within a required range of motion and reduce friction between moving parts. It is usually composed of an inner ring, an outer ring, and rolling elements, and is a very important component in mechanical equipment.

[0003] As disclosed in CN221374237U, a high-temperature resistant bearing includes an inner ring body, an outer ring body, and multiple balls. The outer ring body is located outside the inner ring body, and a ball bearing cavity is formed between the outer ring body and the inner ring body. The multiple balls are installed inside the ball bearing cavity. A heat dissipation cavity is formed inside the outer ring body, and the heat dissipation cavity is connected to an input pipe and an output pipe. The connection between the input pipe, the output pipe, and the heat dissipation cavity switches between multiple positions on the outer ring body. The outer ring body includes an inner ring wall and an outer ring wall located outside the inner ring wall. Two annular sidewalls are fixedly connected between the inner ring wall and the outer ring wall. An annular ring located outside the inner ring wall is rotatably connected between the two annular sidewalls. A partition is fixedly connected to the inner wall of the annular ring. This invention can adjust the heat dissipation area of ​​the bearing by the heat dissipation medium, uniformly dissipate heat from the bearing, and reduce heat dissipation dead zones.

[0004] However, in the existing technology, bearings need to be lubricated with lubricating oil or grease during use. However, in most cases, this needs to be done manually. If the operator forgets to add the lubricating oil or grease, it will accelerate the wear of the bearing. Excessive friction will also generate more noise. For example, the comparative patents listed above have this problem.

[0005] To address these issues, we propose a low-noise, self-lubricating bearing structure. Utility Model Content

[0006] The purpose of this invention is to provide a low-noise self-lubricating bearing structure to solve the problem mentioned in the background art that bearings need to be lubricated with lubricating oil or grease during use, but often this needs to be done manually. If the operator forgets to add the lubricating oil or grease, it will accelerate the wear of the bearing, and excessive friction will also generate more noise.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a low-noise self-lubricating bearing structure, comprising a bearing outer ring, bearing balls, a bearing inner ring, and a shaft;

[0008] Also includes:

[0009] The inner side of the bearing inner ring is provided with a mounting groove, and an arc-shaped heat sink is engaged in the mounting groove. The arc-shaped heat sink is fitted to the outer surface of the shaft body, and the arc-shaped heat sink and the mounting groove are interference fit.

[0010] The bearing outer ring has an oil reservoir inside, and the bearing outer ring has oil leakage holes at equal angles on its inner side. The oil leakage holes are equipped with a triggering mechanism, which includes a hollow column fixed on the inner wall of the oil reservoir, a spring disposed inside the hollow column, a sealing plug connected to the movable end of the spring, and a ball fixed on the sealing plug.

[0011] Preferably, keyways are provided at both the upper and lower ends of the inner side of the bearing inner ring.

[0012] Preferably, both the upper and lower ends of the shaft are provided with positioning keys. The shaft is inserted into the inner ring of the bearing, and at the same time, the shaft drives the positioning keys to engage in the keyway.

[0013] Preferably, the positioning key is engaged with limiting blocks at both ends, and the limiting blocks are respectively fitted to the front and rear sides of the inner ring of the bearing. The positioning key and the limiting blocks are fixed together by fastening bolts that pass through the middle of the limiting blocks.

[0014] Preferably, an oiling groove is provided on the front side of the upper end of the outer ring of the bearing, and the oiling groove is connected to the oil storage tank. A fixing bolt for sealing is threaded into the oiling groove, and a sealing gasket is provided on the fixing bolt and the front side of the outer ring of the bearing.

[0015] Preferably, the sealing plug is fitted onto the oil leakage hole, and a sliding structure is formed between the sealing plug and the hollow column.

[0016] Preferably, the ball block, after being squeezed by the bearing balls, pushes the sealing plug to extend and retract within the oil reservoir.

[0017] Compared with the prior art, the beneficial effects of this utility model are: the low-noise self-lubricating bearing structure facilitates quick and stable installation between the bearing and the shaft, and the shaft is fitted onto the arc-shaped heat sink, which can play an auxiliary heat dissipation role. Combined with the lubricating oil in the oil reservoir, the lubricating oil can be added to the outside of the bearing balls through the oil leakage hole on the inner side of the bearing outer ring while the bearing balls are rolling, so as to perform self-lubrication of the bearing and effectively reduce the noise caused by excessive friction.

[0018] 1. It is equipped with a limit block and a fastening bolt. The shaft body drives the positioning key to engage in the keyway. The limit block is sleeved on the outside of the positioning key. At the same time, the limit block and the inner ring of the bearing are in close contact. The fastening bolt limits the distance between the limit block and the inner ring of the bearing, thereby facilitating quick assembly and disassembly of the shaft body and the bearing.

[0019] 2. It is equipped with a mounting groove and an arc-shaped heat sink. The arc-shaped heat sink is tightly fitted in the mounting groove, and at the same angle, it is attached to the outside of the shaft body, which can help dissipate the heat at the connection between the shaft body and the bearing.

[0020] 3. It is equipped with an oil reservoir and a triggering mechanism. The oil reservoir contains an appropriate amount of lubricating oil. As the bearing balls roll, they can squeeze the triggering mechanism, causing the lubricating oil in the oil reservoir to leak out from the oil leakage hole to self-lubricate the bearing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0023] Figure 3 This is an exploded structural diagram of the bearing inner ring, shaft body, and limiting block of this utility model;

[0024] Figure 4 This is an exploded structural diagram of the bearing inner ring, mounting groove, and arc-shaped heat sink of this utility model;

[0025] Figure 5 This is an exploded structural diagram of the bearing outer ring, oil reservoir, and ball block of this utility model;

[0026] Figure 6 This is an exploded structural diagram of the hollow column and sealing plug of this utility model.

[0027] In the diagram: 1. Bearing outer ring; 2. Bearing ball; 3. Bearing inner ring; 4. Keyway; 5. Shaft; 6. Locating key; 7. Limiting block; 8. Fastening bolt; 9. Mounting groove; 10. Arc-shaped heat sink; 11. Oil filling groove; 12. Fixing bolt; 13. Oil reservoir; 14. Hollow column; 15. Spring; 16. Sealing plug; 17. Ball block. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-6 .

[0030] To address the problem that existing technologies require the addition of lubricating oil or grease for lubrication, which often necessitates manual addition and can accelerate bearing wear if operators forget, resulting in excessive friction and noise, this solution provides a low-noise self-lubricating bearing structure. This structure comprises an outer bearing ring 1, bearing balls 2, an inner bearing ring 3, and a shaft 5. The inner ring 3 has an inner mounting groove 9, in which an arc-shaped heat sink 10 is fitted. The arc-shaped heat sink 10 is fitted against the outer surface of the shaft 5 with an interference fit. The outer bearing ring 1 has an oil reservoir 13 inside, and oil leakage holes are formed at equal angles on its inner side, with a trigger mechanism located within each leakage hole.

[0031] like Figure 1 , Figure 3 and Figure 4 As shown, the inner side of the bearing inner ring 3 is provided with mounting grooves 9 at equal angles, and the arc-shaped heat sink 10 is engaged in the mounting groove 9 with an interference fit. At the same time, keyways 4 are provided at both the upper and lower ends of the inner side of the bearing inner ring 3. The shaft 5 drives the positioning key 6 to be inserted into the bearing inner ring 3. Then, the limiting blocks 7 are respectively sleeved on the front and rear ends of the positioning key 6. At the same time, the limiting blocks 7 and the bearing inner ring 3 are fitted together. Combined with the fastening bolts 8, the limiting blocks 7 and the positioning key 6 are limited, which facilitates the installation and positioning of the shaft 5 and the bearing. Meanwhile, the arc-shaped heat sink 10 is fitted to the outside of the shaft 5, which can help dissipate the heat at the connection between the shaft 5 and the bearing.

[0032] like Figure 1 , Figure 2 , Figure 5 and Figure 6As shown, an oil reservoir 13 is provided inside the outer ring 1 of the bearing. The oil reservoir 13 is connected to the lubrication tank 11. First, an appropriate amount of lubricating oil is added to the oil reservoir 13 through the lubrication tank 11. Then, the fixing bolt 12 is rotated to seal the lubrication tank 11. Oil leakage holes are provided at equal angles on the inner side of the oil reservoir 13, and the oil leakage holes are arranged in a one-to-one correspondence with the triggering mechanism. The triggering mechanism includes a hollow column 14 fixed on the inner wall of the oil reservoir 13, a spring 15 disposed inside the hollow column 14, a sealing plug 16 connected to the movable end of the spring 15, and a ball block 17 fixed on the sealing plug 16. The ball block 17 protrudes towards the center of the bearing. During the rolling process of the bearing balls 2... When in contact with ball block 17, it is squeezed, causing ball block 17 to push the sealing plug 16 to slide between the hollow column 14. The sealing plug 16 squeezes the spring 15, causing the spring 15 to undergo elastic deformation. At this time, the sealing plug 16 loosens the seal on the oil leakage hole, and the lubricating oil in the oil reservoir 13 seeps out through the oil leakage hole to automatically lubricate the bearing. When the bearing ball 2 separates from ball block 17, the spring 15 restores its elastic deformation, pushes the sealing plug 16 to move and seal the oil leakage hole, stopping lubrication. Through the above operation, the bearing can be automatically lubricated in the working state, preventing excessive friction due to lack of lubrication and resulting in large noise.

[0033] 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 low-noise self-lubricating bearing structure, comprising a bearing outer ring (1), bearing balls (2), a bearing inner ring (3), and a shaft (5). Its features are, Also includes: The inner ring (3) of the bearing has an installation groove (9) on its inner side, and an arc-shaped heat sink (10) is engaged in the installation groove (9). The arc-shaped heat sink (10) is attached to the outer surface of the shaft (5), and the arc-shaped heat sink (10) and the installation groove (9) are interference fit. The bearing outer ring (1) has an oil reservoir (13) inside, and the bearing outer ring (1) has an oil leakage hole at an equal angle on the inner side. At the same time, a triggering mechanism is provided in the oil leakage hole. The triggering mechanism includes a hollow column (14) fixed on the inner wall of the oil reservoir (13), a spring (15) provided inside the hollow column (14), a sealing plug (16) connected to the movable end of the spring (15), and a ball block (17) fixed on the sealing plug (16).

2. The low-noise self-lubricating bearing structure according to claim 1, characterized in that: The bearing inner ring (3) has keyways (4) at both the upper and lower ends.

3. The low-noise self-lubricating bearing structure according to claim 1, characterized in that: The shaft (5) is provided with positioning keys (6) at both the upper and lower ends. The shaft (5) is inserted into the inner ring (3) of the bearing, and at the same time, the shaft (5) drives the positioning keys (6) to engage in the keyway (4).

4. The low-noise self-lubricating bearing structure according to claim 3, characterized in that: The positioning key (6) is engaged with the limiting blocks (7) at both ends, and the limiting blocks (7) are respectively attached to the front and rear sides of the inner ring (3) of the bearing. The positioning key (6) and the limiting blocks (7) are fixed by fastening bolts (8) that pass through the middle of the limiting blocks (7).

5. The low-noise self-lubricating bearing structure according to claim 1, characterized in that: The upper front side of the bearing outer ring (1) is provided with a lubrication groove (11), and the lubrication groove (11) is connected to the oil storage tank (13). A fixing bolt (12) for sealing is threaded in the lubrication groove (11), and a sealing gasket is provided between the fixing bolt (12) and the front side of the bearing outer ring (1).

6. The low-noise self-lubricating bearing structure according to claim 1, characterized in that: The sealing plug (16) is fitted onto the oil leakage hole, and a sliding structure is formed between the sealing plug (16) and the hollow column (14).

7. The low-noise self-lubricating bearing structure according to claim 1, characterized in that: The ball block (17) is pushed by the bearing ball (2) to extend and retract in the oil reservoir (13) after being squeezed by the bearing ball (2).

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