Annular grease injection head

Abstract

A kind of annular grease injection head, including connecting head, grease injection hole is processed in the middle of connecting head, grease injection head outer sleeve is installed on the outside of connecting head, installation hole is processed in the middle of grease injection head outer sleeve, connecting stud head is arranged in installation hole, first annular flow channel is formed between connecting stud head and installation hole side wall, grease injection hole is communicated with first annular flow channel, threaded connection hole is processed in the middle of connecting stud head, inner ring positioning column is installed at threaded connection hole, grease injection head inner sleeve is arranged between inner ring positioning column and connecting stud head, second annular flow channel that is communicated with first annular flow channel is formed between grease injection head inner sleeve and installation hole side wall, flared mouth is arranged at the opening of second annular flow channel.The utility model changes original grease injection mode, through the flared mouth of flow channel opening and be injected in the inside wall of bearing outer ring on lubricating grease, can reduce the viscosity between steel ball, reduce the influence when bearing starts.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to an annular grease injection head. Background Art

[0002] During the assembly process of a bearing, grease is injected into the bearing. The injection of grease can play a role in rust prevention and lubrication. At present, when injecting grease into a bearing, the grease is injected between the steel balls through a needle. Due to the viscosity of the grease, the rotational speed of the bearing will be affected during the starting process of the bearing. Contents of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an annular grease injection head aiming at the above-mentioned deficiencies of the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: An annular grease injection head comprises a connecting head, a grease injection hole is machined in the middle of the connecting head, an outer sleeve of the grease injection head is installed on the outer side of the connecting head, a mounting hole is machined in the middle of the outer sleeve of the grease injection head, a connecting stud is arranged in the mounting hole, a first annular flow passage is formed between the connecting stud and the side wall of the mounting hole, the grease injection hole is communicated with the first annular flow passage, a threaded connecting hole is machined in the middle of the connecting stud, an inner ring positioning column is installed at the threaded connecting hole, an inner sleeve of the grease injection head is arranged between the inner ring positioning column and the connecting stud, a second annular flow passage communicated with the first annular flow passage is formed between the inner sleeve of the grease injection head and the side wall of the mounting hole, and a flared opening is arranged at the opening of the second annular flow passage.

[0005] Further, a stepped hole is machined at the upper end of the mounting hole, a disc is machined at the upper end of the connecting stud, the disc is clamped in the stepped hole, a groove is machined on the surface of the disc, the grease injection hole in the middle of the connecting head faces the groove on the surface of the disc, notches are uniformly distributed on the periphery of the disc, the upper part of each notch is communicated with the groove, and the lower part of each notch is communicated with the first annular flow passage.

[0006] Further, a sealing gasket is arranged between the connecting head and the outer sleeve of the grease injection head.

[0007] Further, bow-shaped notches are uniformly distributed on the outer side of the outer sleeve of the grease injection head.

[0008] Further, the inner sleeve of the grease injection head is sleeved on the outer side of the inner ring positioning column, a flange is machined on the inner ring positioning column, and the flange clamps the inner sleeve of the grease injection head.

[0009] Further, a straight slot is machined at the bottom of the inner ring positioning column.

[0010] Compared with the prior art, the annular grease injection head of this utility model changes the original grease injection method. By injecting grease into the inner wall of the outer ring of the bearing through the flared nozzle at the flow channel opening, the adhesion between the steel balls can be reduced, thus reducing the impact on the bearing during startup. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the grease injection head outer sleeve of this utility model; Figure 3 This is a schematic diagram of the structure of the connecting column head of this utility model; Figure 4 This is a schematic diagram of the structure of the inner ring positioning post of this utility model; Figure 5 yes Figure 1 Enlarged view of point A in the middle; Among them, 1. Connector, 2. Grease injection hole, 3. Grease injection head outer sleeve, 4. Arch-shaped notch, 5. Connecting column head, 6. First annular flow channel, 7. Stepped hole, 8. Disc, 9. Groove, 10. Notch, 11. Sealing gasket, 12. Inner ring positioning post, 13. "I" groove, 14. Grease injection head inner sleeve, 15. Second annular flow channel, 16. Trumpet mouth, 17. Flange. Detailed Implementation

[0012] The technical solutions in the embodiments of this utility model will be clearly and completely described below.

[0013] like Figures 1-5 As shown, an annular grease injection head includes a connector 1 with a grease injection hole 2 machined in the middle. A grease injection head outer sleeve 3 is installed on the outside of the connector 1, and the grease injection head outer sleeve 3 is connected to the connector 1 by a thread. The outer side of the grease injection head outer sleeve 3 has evenly distributed arc-shaped notches 4, which facilitate the screwing connection between the grease injection head outer sleeve 3 and the connector 1. The outer sleeve 3 has a mounting hole machined in the middle, and a connecting post 5 is provided in the mounting hole. A first annular flow channel 6 is formed between the connecting post 5 and the side wall of the mounting hole. The grease injection hole in the middle of the connector 1 communicates with the first annular flow channel 6.

[0014] In this embodiment, a stepped hole 7 is machined at the upper end of the mounting hole, and a disc 8 is machined at the upper end of the connecting head 5. When the grease injection head outer sleeve 3 is installed with the connecting head 1, the disc 8 is stuck in the stepped hole 7, so that the connecting head 5 is fixed in the mounting hole. A groove 9 is machined on the surface of the disc 8, and the grease injection hole 2 in the middle of the connecting head 1 faces the groove 9 on the surface of the disc 8. Notches 10 are evenly distributed around the periphery of the disc 8. The upper part of the notches 10 communicates with the groove 9, and the lower part of the notches 10 communicates with the first annular flow channel 6. During the grease injection process, the grease enters the first annular flow channel 6 in sequence through the grease injection hole 2, the groove 9, and the notches 10.

[0015] A sealing gasket 11 is provided between the connector 1 and the outer sleeve 3 of the grease injection head. The sealing gasket 11 is located between the notch 10 of the disc and the connector 1. The sealing gasket 11 is provided to prevent grease leakage during the grease injection process.

[0016] The connecting head 5 has a threaded connection hole in the middle, and an inner ring positioning pin 12 is installed at the threaded connection hole. The lower end of the inner ring positioning pin 12 extends out of the grease injection head outer sleeve 3. During the grease injection process, the lower end of the inner ring positioning pin 12 extends into the inner hole of the bearing inner ring to position the bearing. The bottom of the inner ring positioning pin 12 has a slot 13. The slot 13 facilitates the screwing of the inner ring positioning pin 12 onto the connecting head 5. A grease injection head inner sleeve 14 is provided between the inner ring positioning pin 12 and the connecting head 1. The grease injection head inner sleeve 14 and the side wall of the mounting hole form a second annular flow channel 15 that communicates with the first annular flow channel 6. The opening of the second annular flow channel 15 is provided with a flared mouth 16. During the grease injection process, the flared mouth 16 is used to inject grease onto the inner side wall of the bearing outer ring.

[0017] In this embodiment, the inner sleeve 14 of the grease injection head is sleeved on the outside of the inner ring positioning post 12. The inner ring positioning post 12 is machined with a flange 17. During the tightening process of the inner ring positioning post 12 and the connecting post head 5, the flange 17 locks the inner sleeve 14 of the grease injection head.

[0018] This utility model is not limited to the embodiments described. Those skilled in the art can still make some modifications or changes without departing from the spirit and scope of this utility model. Therefore, the scope of protection of this utility model shall be determined by the scope defined in the claims.

Claims

1. A ring-shaped grease injection head, characterized in that: Comprising a connecting head, a grease injection hole is machined in the middle of the connecting head, a grease injection head outer sleeve is mounted on the outer side of the connecting head, a mounting hole is machined in the middle of the grease injection head outer sleeve, a connecting stud is disposed in the mounting hole, a first annular flow passage is formed between the connecting stud and the side wall of the mounting hole, the grease injection hole is in communication with the first annular flow passage, a threaded connection hole is machined in the middle of the connecting stud, an inner ring positioning post is mounted at the threaded connection hole, a grease injection head inner sleeve is disposed between the inner ring positioning post and the connecting stud, a second annular flow passage in communication with the first annular flow passage is formed between the grease injection head inner sleeve and the side wall of the mounting hole, and a flared opening is provided at the opening of the second annular flow passage.

2. The annular grease injection head according to claim 1, characterized in that: A stepped hole is machined at the upper end of the mounting hole, a disc is machined at the upper end of the connecting stud, the disc is clamped in the stepped hole, a groove is machined on the surface of the disc, the grease injection hole in the middle of the connecting head faces the groove on the surface of the disc, notches are evenly distributed on the periphery of the disc, the upper part of each notch is in communication with the groove, and the lower part of each notch is in communication with the first annular flow passage.

3. The annular grease injection head according to claim 1, characterized in that: A sealing gasket is disposed between the connecting head and the grease injection head outer sleeve.

4. The annular grease injection head according to claim 1, characterized in that: Bow-shaped notches are evenly distributed on the outer side of the grease injection head outer sleeve.

5. The annular grease injection head according to claim 1, characterized in that: The grease injection head inner sleeve is sleeved on the outer side of the inner ring positioning post, a flange is machined on the inner ring positioning post, and the flange clamps the grease injection head inner sleeve.

6. The annular grease injection head according to claim 1, characterized in that: A straight slot is machined at the bottom of the inner ring positioning post.

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