Self-lubricating shifting fork bearing sleeve

Abstract

The utility model discloses a self-lubricating shifting fork bearing sleeve, which comprises an outer ring matched with a bearing seat and playing a supporting role and an inner ring matched with a shaft, the inner ring is arranged in the outer ring, a needle roller is arranged on the outer surface of the inner ring, an inner raceway for the needle roller to roll is arranged on a circle of the inner side of the outer ring, and the inner raceway is arranged on the inner side of the outer ring. A lubricating assembly is arranged in the middle of the inner side of the inner raceway. One end of the lubricating grease is inserted into the independent cavity through the gap reserved between the two vertical plates, then the other end of the lubricating grease is clamped to the other part in the independent cavity, at the moment, the surface of the lubricating grease can extend out of the independent cavity through the gap and make contact with the outer side wall of the inner ring, and the lubricating grease can rotate along with continuous rotation of the inner ring. And the lubricating grease continuously generates friction with the outer wall of the inner ring, so that the self-lubricating function is realized, the friction force generated between the inner ring and the outer ring is reduced, and the service life of the bearing sleeve is prolonged.

Description

Technical Field

[0001] The utility model specifically relates to a self-lubricating fork bearing sleeve. Background Technique

[0002] The actuator uses liquid, gas, electricity or other energy sources and converts them into a driving effect through a motor, cylinder or other devices. The basic actuator is used to drive the valve to the fully open or fully closed position. The actuator used for the control valve can accurately move the valve to any position. A fork is required inside the actuator to drive the action switch of the actuator. Bearing sleeves are provided at both the front and rear ends of the fork to enable the fork to rotate.

[0003] At present, after the bearing sleeve has been used for a long time, excessive friction will consume all the internal lubricating oil, resulting in an impact on the use of the fork and reducing the service life of the fork. Content of the Utility Model

[0004] The purpose of the utility model is to provide a self-lubricating fork bearing sleeve to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A self-lubricating fork bearing sleeve, including an outer ring that cooperates with the bearing seat and plays a supporting role, and an inner ring that cooperates with the shaft. The inner ring is arranged in the outer ring. There are needle rollers on the outer surface of the inner ring. An inner raceway for the needle rollers to roll is provided in a circle on the inner side of the outer ring. A lubrication component is centrally arranged on the inner side of the inner raceway.

[0006] Preferably, the lubrication component includes a mounting plate arranged in the inner raceway, and vertical plates are arranged outward on both sides of the mounting plate.

[0007] Preferably, one end of the vertical plate away from the mounting plate bends inward, and a gap for inserting lubricating grease is reserved between the two vertical plates.

[0008] Preferably, an independent cavity for fixing the lubricating grease is formed between the two vertical plates and the mounting plate, and the lubricating grease in the independent cavity contacts the outer surface of the inner ring through the gap.

[0009] Preferably, several of the lubrication components are provided and arranged at equal intervals in a circle inside the inner raceway.

[0010] Preferably, an annular fixing ring for fixing the needle rollers is arranged inside the inner ring.

[0011] Preferably, the outer side of the inner ring is arc-shaped.

[0012] Technical effects and advantages of the present utility model: For this self-lubricating fork bearing sleeve, the grease to be used is cut into a shape the same size as the independent cavity, and one end of the grease is inserted into the independent cavity through the gap reserved between the two vertical plates. Subsequently, the other end of the grease is clamped to another part in the independent cavity. At this time, the surface of the grease can extend outside the independent cavity through the gap and contact the outer side wall of the inner ring. As the inner ring rotates continuously, the grease will continuously rub against the outer wall of the inner ring, realizing the function of self-lubrication, reducing the friction generated between the inner ring and the outer ring, and prolonging the service life of the bearing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 is a schematic structural diagram of the inner ring of the present utility model;

[0015] Figure 3 is a schematic structural diagram of the outer ring of the present utility model;

[0016] Figure 4 is a schematic structural diagram of the needle roller of the present utility model.

[0017] In the figure: 1. Outer ring; 2. Inner ring; 3. Needle roller; 4. Inner raceway; 5. Mounting plate; 6. Vertical plate; 7. Gap; 8. Independent cavity; 9. Ring-shaped fixing ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model.

[0019] In order to reduce the friction generated between the inner ring 2 and the outer ring 1, as shown in Figure 1 、 Figure 2 and Figure 3 , it includes an outer ring 1 that cooperates with the bearing seat and plays a supporting role, and an inner ring 2 that cooperates with the shaft. The inner ring 2 is arranged in the outer ring 1. There are needle rollers 3 on the outer surface of the inner ring 2. An inner raceway 4 for the needle rollers 3 to roll is provided in a circle on the inner side of the outer ring 1. A lubricating component is centrally arranged inside the inner raceway 4. The grease to be used is cut into a shape the same size as the independent cavity 8, and one end of the grease is inserted into the independent cavity 8 through the gap 7 reserved between the two vertical plates 6. Subsequently, the other end of the grease is clamped to another part in the independent cavity 8. At this time, the surface of the grease can extend outside the independent cavity 8 through the gap 7 and contact the outer side wall of the inner ring 2. As the inner ring 2 rotates continuously, the grease will continuously rub against the outer wall of the inner ring 2, realizing the function of self-lubrication and reducing the friction generated between the inner ring 2 and the outer ring 1.

[0020] In order to extend the service life of the bearing sleeve, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the lubrication assembly includes a mounting plate 5 disposed in the inner raceway 4. Vertical plates 6 are disposed outwardly on both sides of the mounting plate 5. One end of the vertical plate 6 away from the mounting plate 5 bends inwardly. A gap 7 for inserting grease is reserved between the two vertical plates 6. Through the preset gap 7, the grease can be installed in an independent cavity 8 formed between the two vertical plates 6. And when the two mounting plates 5 bend, the grease can be fixed to prevent the grease from slipping out of the independent cavity 8. An independent cavity 8 for fixing the grease is formed between the two vertical plates 6 and the mounting plate 5. The grease in the independent cavity 8 contacts the outer surface of the inner ring 2 through the gap 7. By installing the grease through the independent cavity 8, after the inner ring 2 rotates, the outer wall of the inner ring 2 will rub against the grease, and the grease can lubricate the inner ring 2, thereby improving the overall service life. It should be noted that as the grease is used by friction, it is gradually consumed, resulting in the grease being unable to abut against the outer side of the inner ring 2. At this time, the outer ring 1 can be removed and new grease can be added. The lubrication assemblies are provided in several and are arranged at equal intervals around the inner raceway 4 in a circle. Multiple groups of lubrication assemblies improve the lubrication ability and further extend the overall service life. A ring-shaped fixing ring 9 for fixing the needle rollers 3 is disposed in the inner ring 2. The needle rollers 3 are fixedly installed through the ring-shaped fixing ring 9 to improve the stability of the balls during the rolling process. The outer side of the inner ring 2 is arc-shaped, and the arc-shaped outer side can increase the contact area with the grease, thereby improving the lubrication ability.

[0021] During use, first cut the grease to be used into a shape the same size as the independent cavity 8, and insert one end of the grease into the independent cavity 8 through the gap 7 reserved between the two vertical plates 6. Then, the other end of the grease is clamped to another part in the independent cavity 8. At this time, the surface of the grease can extend outside the independent cavity 8 through the gap 7 and contact the outer side wall of the inner ring 2. As the inner ring 2 rotates continuously, the grease will also continuously rub against the outer wall of the inner ring 2, and the grease will be rubbed onto the outer side of the inner ring 2.

[0022] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not used to limit the present invention.

Claims

1. A self-lubricating shift fork bearing sleeve, characterized in that, It includes an outer ring (1) that cooperates with the bearing housing and serves as a support, and an inner ring (2) that cooperates with the shaft. The inner ring (2) is disposed within the outer ring (1). Needle rollers (3) are provided on the outer surface of the inner ring (2). An inner raceway (4) for the needle rollers (3) to roll is provided in a circle on the inner side of the outer ring (1). A lubrication assembly is centrally disposed inside the inner raceway (4).

2. The self-lubricating shift fork bearing sleeve according to claim 1, wherein: The lubrication assembly includes a mounting plate (5) disposed in the inner raceway (4). Vertical plates (6) are provided outwardly on both sides of the mounting plate (5).

3. The self-lubricating shift fork bearing sleeve according to claim 2, characterized in that: One end of the vertical plate (6) away from the mounting plate (5) bends inwardly, and a gap (7) for inserting grease is reserved between the two vertical plates (6).

4. The self-lubricating shift fork bearing sleeve according to claim 3, wherein: An independent cavity (8) for fixing the grease is formed between the two vertical plates (6) and the mounting plate (5). The grease in the independent cavity (8) contacts the outer surface of the inner ring (2) through the gap (7).

5. The self-lubricating shift fork bearing sleeve according to claim 1, wherein: A number of the lubrication assemblies are provided and are equidistantly spaced in a circle inside the inner raceway (4).

6. The self-lubricating shift fork bearing sleeve according to claim 1, wherein: A ring-shaped fixing ring (9) for fixing the needle rollers (3) is provided inside the inner ring (2).

7. The self-lubricating shift fork bearing sleeve according to claim 1, characterized in that: The outer side of the inner ring (2) is arc-shaped in a circle.

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