A bearing which can be self-lubricating

Abstract

This utility model discloses a self-lubricating bearing, relating to the field of bearing technology. The utility model includes an outer ring, an oil reservoir assembly, and a pressure release assembly. An inner ring is housed within the inner ring's cavity, and a retainer is fitted onto the surface of the inner ring. Ball bearings are slidably connected inside the retainer. The oil reservoir assembly includes two sealing rings, each engaging with the outer ring on one side. An annular oil reservoir is fixedly connected to the top of the inner ring, and drain holes are provided on both sides of the bottom of the annular oil reservoir and on both sides of the top of the sealing rings. This utility model utilizes the oil reservoir assembly to store sufficient lubricating oil, forming a closed oil storage space with the sealing rings and sealing rubber rings. The rotation of the inner ring causes the annular oil reservoir to periodically align with the drain holes, automatically delivering the lubricating oil to the oil guide groove of the outer ring. The oil guide groove then delivers the lubricating oil to the surface of the ball bearings, eliminating the need for frequent manual refilling and solving the problem of difficult bearing maintenance in enclosed equipment.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, and in particular relates to a self-lubricating bearing. Background Technology

[0002] Bearings are key components in machinery used to support rotating shafts and reduce friction. They consist of an inner ring, an outer ring, rolling elements, and a cage. They achieve low-friction rotation between the shaft and the bearing housing through rolling or sliding. They are widely used in various mechanical equipment to transmit motion and bear loads, and have a significant impact on the smoothness, efficiency, and lifespan of mechanical operation.

[0003] Traditional rolling bearings require an external lubrication system to periodically add lubricating grease or oil during operation to reduce friction and wear. However, in enclosed equipment or difficult-to-maintain working environments, manual lubrication is extremely difficult and cannot be replenished frequently. After long-term operation, insufficient lubrication can easily lead to dry friction between the bearing rolling elements and raceways, accelerating component wear and even causing jamming and failure, significantly shortening the service life of the equipment and making it unsuitable for use.

[0004] To address these issues, we provide a self-lubricating bearing. Utility Model Content

[0005] The purpose of this invention is to provide a self-lubricating bearing. By combining the oil storage component and the pressure release component, it solves the problem that existing bearings do not have a self-lubricating function and require frequent addition of lubricating oil by operators.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a self-lubricating bearing, comprising an outer ring, an oil reservoir assembly, and a pressure release assembly. An inner ring is disposed within the inner cavity of the outer ring, and a retainer is fitted onto the surface of the inner ring. Ball bearings are slidably connected inside the retainer. The oil reservoir assembly includes two sealing rings, each engaging with the outer ring on one side. An annular oil reservoir is fixedly connected to the top of the inner ring. Oil drain holes are provided on both sides of the bottom of the annular oil reservoir and on both sides of the top of the sealing rings. The pressure release assembly includes an air chamber, the top of which is fixedly connected to the inner wall of the annular oil reservoir. A piston is disposed within the air chamber, and a spring is fixedly connected to the bottom of the piston. An air inlet pipe is connected to the top of the piston, extending to the outside of the annular oil reservoir. An exhaust pipe is connected to the bottom of the air chamber. One-way valves are installed on the surfaces of both the exhaust pipe and the air inlet pipe.

[0008] The present invention is further configured such that a sealing plug is provided on the left side of the top of the annular oil tank, the bottom of the sealing plug extending into the inner cavity of the annular oil tank, the sealing plug being able to seal the oil injection hole at the top of the annular oil tank, and when it is necessary to replenish the annular oil tank with lubricating oil, the sealing plug can be opened to inject the lubricating oil into the annular oil tank.

[0009] The present invention is further configured such that a pressure plate is fixedly connected to the top of the surface of the air intake pipe, and the top of the pressure plate is provided with anti-slip texture. The pressure plate allows the operator to press the air intake pipe, so that the air intake pipe controls the piston to move up and down, which facilitates the delivery of air from the air chamber to the interior of the annular oil tank. The anti-slip texture is used to improve the anti-slip effect of the pressure plate.

[0010] The present invention is further provided that an oil guide groove is provided inside the outer ring, and the oil guide groove is evenly distributed on the inner wall of the outer ring. The oil guide groove can deliver lubricating oil to the inside of the slide, thereby improving the lubrication effect of the lubricating oil on the ball bearing.

[0011] The present invention is further configured such that the top of the air chamber is provided with a through hole for use with the air inlet pipe, the top and bottom of the spring are fixedly connected to the piston and the inner wall of the air chamber respectively, the through hole facilitates the up and down movement of the air inlet pipe, and the spring is used to reset the piston after it moves down.

[0012] The present invention is further configured such that the inner wall of the outer ring and the surface of the inner ring are provided with slides for use with the ball bearings, and the top of the sealing ring is provided with a limiting groove for use with the annular oil reservoir. The slides can limit the ball bearings and improve the rotational stability of the inner and outer rings, and the limiting groove is used to limit the annular oil reservoir.

[0013] The present invention is further configured such that a sealing ring is fitted on the surface of the annular oil reservoir, and the bottom of the sealing ring is fixedly connected to the outer ring. The sealing ring is used to improve the sealing performance between the sealing ring and the annular oil reservoir and prevent lubricating oil from overflowing.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model utilizes an oil storage component to store sufficient lubricating oil in an annular oil tank. Combined with a sealing ring and a sealing rubber ring, it forms a closed oil storage space. The rotation of the inner ring drives the annular oil tank to periodically align with the oil drain hole, automatically delivering the lubricating oil to the oil guide groove of the outer ring. The oil guide groove then delivers the lubricating oil to the surface of the ball bearings, eliminating the need for frequent manual refilling operations and solving the problem of difficult bearing maintenance in enclosed equipment.

[0016] 2. This utility model uses a pressure release component to press down the air inlet pipe with a pressure plate, which drives the piston to compress the spring. The piston moves and generates air pressure. The gas is injected into the annular oil chamber through the exhaust pipe controlled by a one-way valve, so that the inside of the annular oil chamber is in a positive pressure state. This allows the lubricating oil to be forced into the guide groove from the overlapping oil drain holes, evenly covering the balls and slides, eliminating the risk of dry friction and extending the service life of the bearing. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 A three-dimensional diagram of a self-lubricating bearing;

[0019] Figure 2 A cross-sectional view of a self-lubricating bearing;

[0020] Figure 3 This is a schematic diagram showing the connection between the outer ring, inner ring, cage, and balls in a self-lubricating bearing.

[0021] Figure 4 A cross-sectional view of an annular oil reservoir in a self-lubricating bearing;

[0022] Figure 5 This is a cross-sectional view of the air chamber in a self-lubricating bearing.

[0023] In the attached diagram: 1. Outer ring; 2. Inner ring; 3. Cage; 4. Ball bearing; 5. Oil reservoir assembly; 51. Sealing ring; 52. Annular oil reservoir; 53. Oil drain hole; 6. Pressure release assembly; 61. Air chamber; 62. Piston; 63. Spring; 64. Inlet pipe; 65. Exhaust pipe; 66. One-way valve; 7. Sealing plug; 8. Pressure plate; 9. Oil guide groove; 10. Sealing rubber ring. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figure 1-5This utility model is a self-lubricating bearing, including an outer ring 1, an oil storage component 5, and a pressure release component 6. The inner ring 2 is provided in the inner cavity of the outer ring 1, and a retainer 3 is sleeved on the surface of the inner ring 2. Ball bearings 4 are slidably connected inside the retainer 3. The oil storage component 5 includes two sealing rings 51, and the opposite sides of the two sealing rings 51 are engaged with the outer ring 1. An annular oil reservoir 52 is fixedly connected to the top of the inner ring 2. Oil drain holes 53 are provided on both sides of the bottom of the annular oil reservoir 52 and on both sides of the top of the sealing rings 51. The pressure release component 6 includes an air chamber 61, the top of which is fixedly connected to the inner wall of the annular oil reservoir 52. A piston 62 is provided in the inner cavity of the air chamber 61, and a spring 63 is fixedly connected to the bottom of the piston 62. An air inlet pipe 64 is connected to the top of the piston 62, and the top of the air inlet pipe 64 extends to the outside of the annular oil reservoir 52. An exhaust pipe 65 is connected to the bottom of the air chamber 61. One-way valves 66 are installed on the surfaces of the exhaust pipe 65 and the air inlet pipe 64.

[0027] Specifically: the cage 3 can cooperate with the ball bearing 4 to improve the smoothness of the rotation of the inner ring 2 and the outer ring 1; the sealing ring 51 can seal the gap between the inner ring 2 and the outer ring 1; the annular oil reservoir 52 can store lubricating oil, eliminating the need for frequent replenishment by operators; the oil drain hole 53 can inject the lubricating oil stored in the annular oil reservoir 52 into the outer ring 1, thereby lubricating the outer ring 1 and the inner ring 2; the annular oil reservoir 52 rotates with the inner ring 2; when the two oil drain holes 53 are vertically overlapped, the lubricating oil in the annular oil reservoir 52 is injected into the outer ring 1, automatically completing the lubricating oil replenishment operation; the piston 62 can move inside the air chamber 61, delivering the air inside the air chamber 61 to the annular oil reservoir 52; the one-way valve 66, in cooperation with the air inlet pipe 64 and the exhaust pipe 65, can send external air from the air chamber 61 into the annular oil reservoir 52, keeping the annular oil reservoir 52 under positive pressure; when the two oil drain holes 53 overlap, they can push the lubricating oil into the outer ring 1, automatically completing the lubricating oil replenishment operation.

[0028] Example 2

[0029] Please see Figure 1-5 Based on Embodiment 1, a sealing plug 7 is provided on the left side of the top of the annular oil tank 52. The bottom of the sealing plug 7 extends through the inner cavity of the annular oil tank 52. A pressure plate 8 is fixedly connected to the top of the surface of the air inlet pipe 64. The top of the pressure plate 8 is provided with anti-slip texture. An oil guide groove 9 is opened inside the outer ring 1. The oil guide groove 9 is evenly distributed on the inner wall of the outer ring 1. A through hole is opened at the top of the air chamber 61 to cooperate with the air inlet pipe 64. The top and bottom of the spring 63 are fixedly connected to the piston 62 and the inner wall of the air chamber 61, respectively. A slide is opened on the inner wall of the outer ring 1 and the surface of the inner ring 2 to cooperate with the ball 4. A limiting groove is opened at the top of the sealing ring 51 to cooperate with the annular oil tank 52. A sealing rubber ring 10 is sleeved on the surface of the annular oil tank 52. The bottom of the sealing rubber ring 10 is fixedly connected to the outer ring 1.

[0030] Specifically: the sealing plug 7 seals the oil filling hole at the top of the annular oil reservoir 52. When it is necessary to add lubricating oil to the annular oil reservoir 52, the sealing plug 7 can be opened to inject lubricating oil into the annular oil reservoir 52. The pressure plate 8 allows the operator to press the air inlet pipe 64, so that the air inlet pipe 64 controls the piston 62 to move up and down, which facilitates the delivery of air from the air chamber 61 to the annular oil reservoir 52. The anti-slip texture is used to improve the anti-slip effect of the pressure plate 8. The oil guide groove 9 can deliver lubricating oil to the inside of the slide, which can improve the lubrication effect of the lubricating oil on the ball 4. The through hole can facilitate the up and down movement of the air inlet pipe 64. The spring 63 is used to reset the piston 62 after it moves down. The slide can limit the ball 4 and improve the rotational stability of the inner ring 2 and the outer ring 1. The limiting groove is used to limit the annular oil reservoir 52. The sealing ring 10 is used to improve the sealing between the sealing ring 51 and the annular oil reservoir 52 and prevent lubricating oil from overflowing.

[0031] The working principle of this utility model is as follows: Opening the sealing plug 7 allows lubricating oil to be injected into the annular oil reservoir 52, filling it with lubricating oil. When the bearing needs to operate, pressing the pressure plate 8 pushes the intake pipe 64 downwards. The intake pipe 64 drives the piston 62 to compress the air in the air chamber 61. At this time, the one-way valve 66 of the intake pipe 64 is closed, and the one-way valve 66 of the exhaust pipe 65 is opened. Compressed air enters the annular oil reservoir 52 through the exhaust pipe 65, repeatedly pushing the pressure plate 8, thus maintaining a positive pressure inside the annular oil reservoir 52. Subsequently, the bearing begins to operate, and the inner ring 2 rotates... When rotating, the annular oil tank 52 rotates synchronously. When the oil drain hole 53 at the bottom of the annular oil tank 52 is vertically aligned with the oil drain hole 53 at the top of the sealing ring 51, the air pressure inside the annular oil tank 52 forces the lubricating oil into the oil guide groove 9 of the outer ring 1. The lubricating oil seeps into the ball 4 and the slide along the oil guide groove 9, lubricating the contact surfaces of the ball 4 with the inner ring 2 and the outer ring 1. Because the diameter of the oil drain hole 53 is small, the amount of oil discharged each time is small, so that the bearing can be continuously lubricated during operation, eliminating the need for frequent manual filling operations and solving the problem of difficult bearing maintenance in enclosed equipment.

[0032] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A self-lubricating bearing, comprising an outer ring (1), an oil reservoir (5), and a pressure release assembly (6), characterized in that: The inner cavity of the outer ring (1) is provided with an inner ring (2), and a retainer (3) is sleeved on the surface of the inner ring (2). A ball bearing (4) is slidably connected inside the retainer (3). The oil storage assembly (5) includes two sealing rings (51), and the opposite sides of the two sealing rings (51) are engaged with the outer ring (1). The top of the inner ring (2) is fixedly connected to an annular oil tank (52). The bottom sides of the annular oil tank (52) and the top sides of the sealing ring (51) are provided with oil drain holes (53). The pressurization release assembly (6) includes an air chamber (61), the top of which is fixedly connected to the inner wall of the annular oil tank (52). A piston (62) is provided in the inner cavity of the air chamber (61), and a spring (63) is fixedly connected to the bottom of the piston (62). An air inlet pipe (64) is connected to the top of the piston (62), and the top of the air inlet pipe (64) extends to the outside of the annular oil tank (52). An exhaust pipe (65) is connected to the bottom of the air chamber (61), and a one-way valve (66) is installed on the surface of both the exhaust pipe (65) and the air inlet pipe (64).

2. The self-lubricating bearing according to claim 1, characterized in that: A sealing plug (7) is provided on the left side of the top of the annular oil tank (52), and the bottom of the sealing plug (7) extends into the inner cavity of the annular oil tank (52).

3. A self-lubricating bearing according to claim 1, characterized in that: A pressure plate (8) is fixedly connected to the top of the surface of the air intake pipe (64), and the top of the pressure plate (8) is provided with anti-slip texture.

4. A self-lubricating bearing according to claim 1, characterized in that: The outer ring (1) has an oil guide groove (9) inside, and the oil guide groove (9) is evenly distributed on the inner wall of the outer ring (1).

5. A self-lubricating bearing according to claim 1, characterized in that: The top of the air chamber (61) is provided with a through hole for use with the air inlet pipe (64), and the top and bottom of the spring (63) are fixedly connected to the piston (62) and the inner wall of the air chamber (61), respectively.

6. A self-lubricating bearing according to claim 1, characterized in that: The inner wall of the outer ring (1) and the surface of the inner ring (2) are provided with slides for use with the ball (4), and the top of the sealing ring (51) is provided with a limiting groove for use with the annular oil tank (52).

7. A self-lubricating bearing according to claim 1, characterized in that: The surface of the annular oil tank (52) is fitted with a sealing ring (10), and the bottom of the sealing ring (10) is fixedly connected to the outer ring (1).

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