Oil-containing wear-resistant bearing with stepped oil grooves distributed

Abstract

The utility model discloses an oil-containing wear-resistant bearing with stepped oil groove distribution, and particularly relates to the technical field of bearings, the oil-containing wear-resistant bearing comprises a small collar, one end of the small collar is provided with a stepped end lubricating assembly, the stepped end lubricating assembly comprises a middle collar and one end fixedly mounted on the small collar, one end of the middle collar is fixedly connected with a small end ring, and the other end of the middle collar is fixedly connected with the small end ring. The outer wall of the small end ring is fixedly connected with a middle shaft ring; and the large end ring is fixedly connected to one end part of the middle shaft ring. The stepped shaft end lubricating assembly is adopted, a stepped shaft can be inserted into the large shaft ring, a large amount of oil is stored in a plurality of hole bodies in the small end ring, the stored oil flows out through a plurality of oil holes in the large end ring, the small end ring and the large end ring can fully lubricate the two ends of the stepped shaft, and the service life of the stepped shaft is prolonged. And meanwhile, multi-point-position distributed uniform lubrication can be achieved, double distributed lubrication is achieved at the ends of the steps, and the lubrication effect is better.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and more specifically, to an oil-impregnated wear-resistant bearing with a stepped oil groove distribution. Background Technology

[0002] Powder metallurgy oil-impregnated bearings are porous bearings manufactured using powder metallurgy processes and containing internal lubricating oil. Their core purpose is to reduce friction and wear by utilizing self-lubricating properties, while simplifying the design of lubrication systems. Through material and process innovation, powder metallurgy oil-impregnated bearings have become key components for lightweight, maintenance-free, and highly reliable applications, and are widely used in scenarios with strict requirements for cost, lifespan, and operational stability.

[0003] Among existing publicly available documents, patent publication number CN205331224U discloses a powder metallurgy oil-impregnated bearing. This technology utilizes at least one oil inlet hole between an inner and outer oil reservoir. Compared to existing technologies, this powder metallurgy oil-impregnated bearing has a high oil content, and both the inner and outer oil reservoirs can store a large amount of lubricating oil, resulting in good lubrication, high surface hardness, and durability. However, this technology still has the following drawbacks.

[0004] When assembling oil-impregnated wear-resistant bearings onto shafts, especially for stepped shafts, the inner wall end faces of the stepped metallurgical bearings may have different positions. Direct contact can cause significant wear, making it difficult to achieve oil lubrication at the ends of the stepped shafts, resulting in poor lubrication at the stepped ends. Therefore, oil-impregnated wear-resistant bearings with stepped oil grooves are required. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides the following technical solution: an oil-impregnated wear-resistant bearing with stepped oil grooves, comprising a small shaft collar, one end of which is provided with a stepped end lubrication assembly, the stepped end lubrication assembly comprising:

[0006] A central shaft ring is fixedly installed at one end of a small shaft ring, and a small end ring is fixedly connected to one end of the central shaft ring. The central shaft ring is fixedly connected to the outer wall of the small end ring.

[0007] A large end ring is fixedly connected to one end of the central shaft ring, and a large shaft ring is fixedly connected to the outer wall of the large end ring;

[0008] Multiple oil holes are formed on the inner wall of the small end ring, and multiple holes are formed on the inner wall of the large end ring.

[0009] In a preferred embodiment, the outer wall diameter of the small collar is smaller than that of the middle collar, and the outer wall diameter of the middle collar is smaller than that of the large collar.

[0010] In a preferred embodiment, the small collar and the middle collar are formed by stamping, and the middle collar and the large collar are formed by stamping.

[0011] In a preferred embodiment, the vertical cross-sectional shape of the plurality of oil holes is circular, the plurality of holes are arranged in a circular and equidistant distribution, and the inner walls of the small shaft ring, the middle shaft ring and the large shaft ring are all provided with oil storage grooves.

[0012] In a preferred embodiment, the vertical cross-sectional shape of the plurality of holes is circular, and the inner wall of the holes is a smooth surface.

[0013] In a preferred embodiment, a stepped cover is provided on the outside of the small collar, and both the small collar and the middle collar are fixedly connected to the stepped cover;

[0014] The large shaft collar is fixedly connected to the stepped cover, and the stepped cover has stepped holes inside.

[0015] In a preferred embodiment, the diameter of the outer wall at one end of the stepped cover is smaller than the diameter of the outer wall at the other end.

[0016] The technical effects and advantages of this utility model are as follows:

[0017] 1. This utility model adopts a stepped end lubrication assembly, which can insert the stepped shaft into the large shaft ring. The left end face of the first step of the stepped shaft is squeezed onto the small end ring. At the same time, the multiple holes inside the small end ring store a large amount of oil. The left end face of the second step of the stepped shaft contacts the right side face of the large end ring. At the same time, the multiple oil holes on the large end ring allow the stored oil to flow out. The small end ring and the large end ring can fully lubricate both ends of the stepped shaft, and can also distribute lubrication evenly at multiple points. The stepped ends achieve double distributed lubrication, resulting in better lubrication effect.

[0018] 2. This utility model uses the stepped holes inside the stepped cover to cover the outer walls of the small ring, the middle ring, and the large ring, thereby increasing the connection strength of the small ring, the middle ring, and the large ring, and improving the durability of the small ring, the middle ring, and the large ring. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the oil-impregnated wear-resistant bearing with a stepped oil groove distribution according to this utility model.

[0020] Figure 2 This is a schematic diagram of the vertical cross-sectional structure of the oil-impregnated wear-resistant bearing with a stepped oil groove distribution according to this utility model.

[0021] Figure 3 This is a partial structural diagram of the vertical cross-section of the connection between the stepped cover and the small shaft ring of this utility model.

[0022] Figure 4This is a schematic diagram of the external partial structure of the stepped cover of this utility model.

[0023] The attached diagram is labeled as follows: 1. Small collar; 2. Middle collar; 3. Large collar; 4. Small end ring; 5. Large end ring; 6. Oil hole; 7. Hole body; 8. Oil reservoir; 9. Stepped cover; 10. Stepped hole. Detailed Implementation

[0024] 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.

[0025] As attached Figure 1 - Appendix Figure 4 The present invention relates to an oil-impregnated wear-resistant bearing with a stepped oil groove distribution. The oil-impregnated wear-resistant bearing with a stepped oil groove distribution is provided with a stepped end lubrication assembly. The stepped end lubrication assembly can fully lubricate the small end ring 4 and the large end ring 5, and can also provide uniform lubrication at multiple points. The stepped end achieves double distributed lubrication, resulting in better lubrication effect. The specific structural configuration of the stepped end lubrication assembly is as follows.

[0026] In this embodiment, as shown in the appendix Figure 2 - Appendix Figure 3 As shown, a stepped end lubrication assembly is provided at one end of the small ring 1. The stepped end lubrication assembly includes: a middle ring 2, which is fixedly installed at one end of the small ring 1, and a small end ring 4 is fixedly connected to one end of the middle ring 2. The outer wall of the small end ring 4 is fixedly connected to the middle ring 2; a large end ring 5, which is fixedly connected to one end of the middle ring 2, and a large ring 3 is fixedly connected to the outer wall of the large end ring 5; and multiple oil holes 6, all of which are opened on the inner wall of the small end ring 4. The inner wall of the large end ring 5 has multiple holes 7. The outer wall diameter of the small ring 1 is smaller than that of the middle ring 2, and the outer wall diameter of the middle ring 2 is smaller than that of the large ring 3. The small ring 1 and the middle ring 2 are formed by stamping, and the middle ring 2 and the large ring 3 are formed by stamping. The vertical cross-section of the multiple oil holes 6 is circular, and the multiple holes 7 are arranged in a circular and equidistant distribution. The vertical cross-section of the multiple bores 7 is circular, the inner wall of the bore 7 is smooth, and the inner walls of the small shaft ring 1, the middle shaft ring 2 and the large shaft ring 3 are all provided with oil storage grooves 8.

[0027] In use, the stepped oil groove distribution of this oil-impregnated wear-resistant bearing allows the stepped shaft to be inserted into the large bearing ring 3, then into the middle bearing ring 2, and finally into the small bearing ring 1. The left end face of the first step of the stepped shaft is squeezed onto the small end ring 4, while multiple holes 7 inside the small end ring 4 store a large amount of oil. Simultaneously, the left end face of the second step of the stepped shaft contacts the right side of the large end ring 5, and multiple oil holes 6 on the large end ring 5 store oil. External flow ensures stable rotational lubrication of the stepped shaft within the small ring 1, the middle ring 2, and the large ring 3. The small end ring 4 and the large end ring 5 provide sufficient lubrication to both ends of the stepped shaft, while also providing uniform lubrication at multiple points. The lubrication durability of the small end ring 4 and the large end ring 5 is better. In addition, the multiple oil reservoirs 8 inside the small ring 1, the middle ring 2, and the large ring 3 can all provide sufficient lubrication to the stepped shaft.

[0028] In this embodiment, as shown in the appendix Figure 3 - Appendix Figure 4 As shown, a stepped cover 9 is provided on the outside of the small shaft ring 1, and both the small shaft ring 1 and the middle shaft ring 2 are fixedly connected to the stepped cover 9; the large shaft ring 3 is fixedly connected to the stepped cover 9, and a stepped hole 10 is provided inside the stepped cover 9. The outer diameter of one end of the stepped cover 9 is smaller than the outer diameter of the other end.

[0029] When this technology is used, the stepped holes 10 inside the stepped cover 9 are placed over the outer walls of the small ring 1, the middle ring 2, and the large ring 3, providing multi-section protection for the outer walls of the small ring 1, the middle ring 2, and the large ring 3, increasing the connection firmness of the small ring 1, the middle ring 2, and the large ring 3, and preventing the small ring 1, the middle ring 2, and the large ring 3 from loosening during use.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil-impregnated wear-resistant bearing with stepped oil groove distribution, comprising a small collar (1), characterized in that: One end of the small collar (1) is provided with a stepped end lubrication assembly, the stepped end lubrication assembly comprising: A central ring (2) is fixedly installed at one end of a small ring (1). A small end ring (4) is fixedly connected to one end of the central ring (2). The central ring (2) is fixedly connected to the outer wall of the small end ring (4). The large end ring (5) is fixedly connected to one end of the central shaft ring (2), and the outer wall of the large end ring (5) is fixedly connected to the large shaft ring (3); Multiple oil holes (6) are opened on the inner wall of the small end ring (4), and multiple holes (7) are opened on the inner wall of the large end ring (5).

2. The oil-impregnated wear-resistant bearing with stepped oil groove distribution according to claim 1, characterized in that: The outer diameter of the small collar (1) is smaller than the outer diameter of the middle collar (2), and the outer diameter of the middle collar (2) is smaller than the outer diameter of the large collar (3).

3. The oil-impregnated wear-resistant bearing with stepped oil groove distribution according to claim 1, characterized in that: The small collar (1) and the middle collar (2) are formed by stamping, and the middle collar (2) and the large collar (3) are formed by stamping.

4. The oil-impregnated wear-resistant bearing with stepped oil groove distribution according to claim 1, characterized in that: The vertical cross-section of the multiple oil holes (6) is circular, and the multiple holes (7) are arranged in a circular and equidistant pattern. The inner walls of the small shaft ring (1), the middle shaft ring (2), and the large shaft ring (3) are all provided with oil storage grooves (8).

5. The oil-impregnated wear-resistant bearing with stepped oil groove distribution according to claim 1, characterized in that: The vertical cross-sectional shape of the plurality of holes (7) is circular, and the inner wall of the holes (7) is a smooth surface.

6. The oil-impregnated wear-resistant bearing with stepped oil groove distribution according to claim 1, characterized in that: The small shaft ring (1) is provided with a stepped cover (9) on its outside, and both the small shaft ring (1) and the middle shaft ring (2) are fixedly connected to the stepped cover (9); The large shaft collar (3) is fixedly connected to the stepped cover (9), and the stepped cover (9) has a stepped hole (10) inside.

7. The oil-impregnated wear-resistant bearing with stepped oil groove distribution according to claim 6, characterized in that: The outer wall diameter at one end of the stepped cover (9) is smaller than the outer wall diameter at the other end.

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