Cylinder body needle bearing convenient to disassemble

By designing a combined structural inner ring, including the structural inner ring body, assembly inner ring, limit arc plate and adjustment parts, the problem of easy damage to the needle roller bearing during disassembly is solved, and it is easy to disassemble and stable installation is achieved, and the Economic waste.

CN222436860UActive Publication Date: 2025-02-07XINGHUA TIANZE AUTO PARTS CO LTD
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Patent Information

Application Number
CN202421199171.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-29
Publication Date
2025-02-07
Estimated Expiration
2034-05-29

AI Technical Summary

Technical Problem

Existing needle roller bearings are prone to damage to the needle roller during disassembly, resulting in the scrapping of the entire bearing.

Method used

A combined structural inner ring consisting of a structural inner ring body, an assembly inner ring, a limit arc plate and an adjustment piece is designed. It is installed interfering with the shaft through the assembly inner ring, and the limit arc plate is driven tightly by using the adjustment piece. Apply to the shaft for easy disassembly and stable installation.

Benefits of technology

The convenient disassembly of needle roller bearings is achieved, avoiding needle roller damage, and economic waste of the entire bearing can be avoided by replacing the assembly inner ring separately.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a cylinder body needle roller bearing convenient to disassemble, and relates to the technical field of needle roller bearings, the cylinder body needle roller bearing convenient to disassemble comprises a structure outer ring, a retainer and a combined structure inner ring, the combined structure inner ring comprises a structure inner ring body, an assembly inner ring, a limiting arc plate and an adjusting piece, and the assembly inner ring is arranged on the inner side of the structure inner ring body; ring frames are arranged at the top and the bottom of the assembly inner ring, limiting grooves are symmetrically formed in the inner wall of the assembly inner ring, limiting arc plates are arranged in the limiting grooves through springs, and adjusting pieces are arranged on the ring frames; according to the needle bearing, the inner ring used for being installed with the shaft in the needle bearing is arranged to be composed of the structure inner ring body, the assembly inner ring, the limiting arc plate and the adjusting piece, and when the needle bearing and the shaft rod are installed, the assembly inner ring and the shaft rod can be installed in an interference mode, so that disassembly is convenient; in order to guarantee the installation stability between the shaft rod and the inner ring of the combined structure at the same time, the adjusting piece can be used for driving the limiting arc plate to be tightly attached to the shaft rod so that the shaft rod can be held, and the fixing stability can be improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of needle roller bearings, in particular to a cylinder needle roller bearing which is easy to disassemble. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers. Relative to their diameter, the rollers are both thin and long. Such rollers are called needle rollers.

[0003] The knocking method is generally used for disassembly of needle roller bearings: knocking is applied to the inner ring of the first bearing. This method is simple and easy to implement. However, since needle roller bearings are different from ball bearings, their needle rollers cannot rotate along the axial direction of the bearings, and since the inner ring of the first bearing fits tightly with the rolling shaft, it is necessary to knock the inner ring several times. When knocking and disassembling the inner ring, the needle roller has an axial movement tendency, which is easy to damage the needle roller, and then the entire needle roller bearing is scrapped. Therefore, the utility model proposes a cylinder needle roller bearing that is easy to disassemble to solve the shortcomings of the prior art. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide a cylinder needle roller bearing that is easy to disassemble. The inner ring of the needle roller bearing used for installation with the shaft is arranged to be composed of a structural inner ring body, an assembly inner ring, a limit arc plate and an adjusting part. When the needle roller bearing is installed with the shaft rod, the assembly inner ring can be installed with the shaft rod in an interference fit to facilitate disassembly. In order to ensure the installation stability between the shaft rod and the combined structural inner ring at the same time, the limiting arc plate can be driven by the adjusting part to fit tightly against the shaft rod to hold the shaft rod to improve the fixing stability.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cylinder needle roller bearing that is easy to disassemble, comprising a structural outer ring, a retainer and a combined structural inner ring, wherein a first annular raceway is arranged on the inner wall of the structural outer ring, a retainer is arranged on the inner side of the structural outer ring, a mounting groove is arranged on the retainer, a plurality of mounting grooves are arranged, and a needle roller body is arranged in each of the plurality of mounting grooves, a combined structural inner ring is arranged on the inner side of the retainer, a second annular raceway is arranged on the outer wall of the combined structural inner ring, one side of the needle roller body is located inside the first annular raceway, and the other side of the needle roller body is located inside the second annular raceway;

[0007] The combined structural inner ring includes a structural inner ring body, an assembly inner ring, a limiting arc plate and an adjusting member. The structural inner ring body is provided with an assembly inner ring inside. The upper and lower ends of the assembly inner ring extend out of the top and bottom of the structural inner ring body. The top and bottom of the assembly inner ring are provided with ring frames. The assembly inner ring is detachably installed with the structural inner ring body through the ring frames. Limiting grooves are symmetrically provided on the inner wall of the assembly inner ring. A limiting arc plate is provided in the limiting groove through a spring. An adjusting member is provided on the ring frame. The adjusting member is adapted to the position of the limiting arc plate.

[0008] A further improvement is that: the ring frame is provided with connecting bolts, and there are multiple connecting bolts. The top and bottom of the inner ring body of the structure are provided with connecting holes adapted to the connecting bolts, and the connecting bolts and the connecting holes are detachable and installable.

[0009] A further improvement is that the adjusting member comprises an adjusting screw hole, an operating hole and an adjusting bolt, the side wall of the ring frame is provided with an operating hole, the inner side of the operating hole is provided with an adjusting screw hole connected thereto, and the adjusting bolt is provided in the adjusting screw hole.

[0010] A further improvement is that: a clamping strip is provided on the outer wall of the assembly inner ring, and the clamping strip is provided in multiple groups, and a clamping groove adapted to the clamping strip is provided on the inner side wall of the structural inner ring body.

[0011] A further improvement is that an assembly outer ring is provided on the outer wall of the structural outer ring, end ring cover plates are provided above and below the structural outer ring, and the two end ring cover plates are connected to the fixing holes at the top and bottom of the assembly outer ring by fixing bolts.

[0012] A further improvement is that a through hole matching the position of the operating hole is provided on the side wall of the end ring cover.

[0013] The beneficial effects of the utility model are as follows: the utility model arranges the inner ring used for installation with the shaft in the needle roller bearing to be composed of a structural inner ring body, an assembly inner ring, a limit arc plate and an adjusting member. When the needle roller bearing is installed with the shaft rod, the assembly inner ring can be installed with the shaft rod in an interference fit to facilitate disassembly. In order to simultaneously ensure the installation stability between the shaft rod and the combined structural inner ring, the limit arc plate can be driven by the adjusting member to be closely attached to the shaft rod to hold the shaft rod to improve the fixing stability. When disassembling the needle roller bearing, the limit arc plate can be released by loosening the abutment state of the limit arc plate with the adjusting member, and the quick disassembly of the assembly inner ring and the shaft rod can be facilitated.

[0014] The assembly inner ring and the structural inner ring body of the utility model can be disassembled. When the needle roller bearing is disassembled by knocking, if the assembly inner ring is damaged due to knocking, the assembly inner ring can be replaced alone, thereby avoiding economic waste caused by replacing the entire needle roller bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an exploded schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the installation structure of the needle roller body of the utility model;

[0017] Figure 3 This is an exploded schematic diagram of the inner ring structure of the combined structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the front and sectional view of the adjusting bolt installation structure of the utility model;

[0019] Figure 5 It is a schematic diagram of the front and sectional view of the limiting arc plate installation structure of the utility model.

[0020] Wherein: 1. Structural outer ring; 2. Retaining frame; 3. Combined structural inner ring; 301. Structural inner ring body; 302. Assembly inner ring; 303. Limiting arc plate; 304. Ring frame; 305. Connecting bolt; 306. Connecting hole; 307. Adjusting screw hole; 308. Operating hole; 309. Adjusting bolt; 3010. Clip strip; 3011. Clip groove; 4. First annular raceway; 5. Mounting groove; 6. Needle roller body; 7. Second annular raceway; 8. Assembly outer ring; 9. End ring cover plate; 10. Fixing bolt; 11. Fixing hole; 12. Through hole. DETAILED DESCRIPTION

[0021] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0022] according to Figure 1-5 As shown, this embodiment proposes a cylinder needle roller bearing that is easy to disassemble, including a structural outer ring 1, a retainer 2 and a combined structural inner ring 3. The inner wall of the structural outer ring 1 is provided with a first annular raceway 4, the inner side of the structural outer ring 1 is provided with a retainer 2, the retainer 2 is provided with a mounting groove 5, and the mounting groove 5 is provided with a plurality of grooves, and a needle roller body 6 is provided in each of the plurality of mounting grooves 5. The inner side of the retainer 2 is provided with a combined structural inner ring 3, and the outer wall of the combined structural inner ring 3 is provided with a second annular raceway 7, one side of the needle roller body 6 is located inside the first annular raceway 4, and the other side of the needle roller body 6 is located inside the second annular raceway 7; when the needle roller bearing of the utility model is used, the shaft to be installed is connected with the combined structural inner ring 3;

[0023] The combined structural inner ring 3 includes a structural inner ring body 301, an assembly inner ring 302, a limiting arc plate 303 and an adjusting member. The structural inner ring body 301 is provided with an assembly inner ring 302 on the inner side. The upper and lower ends of the assembly inner ring 302 extend out of the top and bottom of the structural inner ring body 301. The top and bottom of the assembly inner ring 302 are provided with ring frames 304. The assembly inner ring 302 is detachably installed with the structural inner ring body 301 through the ring frames 304. The inner wall of the assembly inner ring 302 is symmetrically provided with limiting grooves. The limiting arc plate 303 is provided in the limiting groove through a spring. The ring frame 304 is provided with an adjusting member, and the adjusting member is adapted to the position of the limiting arc plate 303. The shaft to be installed is first installed with an interference fit with the assembly inner ring 302, and then, in order to improve the installation stability, the limiting arc plate 303 is driven to approach the outer wall of the shaft by driving the adjustment member, so that the two sets of limiting arc plates 303 tightly hold the shaft to achieve stable installation; when disassembling the needle bearing of the utility model, first release the abutment of the adjustment member on the limiting arc plate 303, so that the limiting arc plate 303 releases the clamping force on the shaft. At this time, since the shaft and the assembly inner ring 302 are installed with an interference fit, the assembly inner ring 302 can be separated from the shaft by knocking.

[0024] The ring frame 304 is provided with connecting bolts 305, and there are a plurality of connecting bolts 305. The top and bottom of the structural inner ring body 301 are provided with connecting holes 306 adapted to the connecting bolts 305, and the connecting bolts 305 and the connecting holes 306 are detachable. By providing the ring frame 304, the connecting bolts 305 and the connecting holes 306, the assembly inner ring 302 and the structural inner ring body 301 can be formed into an integral structure.

[0025] The adjusting member includes an adjusting screw hole 307, an operating hole 308 and an adjusting bolt 309. The operating hole 308 is provided on the side wall of the ring frame 304. The inner side of the operating hole 308 is provided with an adjusting screw hole 307 connected thereto. The adjusting bolt 309 is provided in the adjusting screw hole 307. By driving one end of the adjusting bolt 309 in the adjusting screw hole 307 from the operating hole 308 to move toward the limiting groove, the limiting arc plate 303 provided by the spring in the limiting groove can be driven to approach the shaft rod and then hold the shaft rod tightly for fixing.

[0026] The outer wall of the assembly inner ring 302 is provided with a clamping strip 3010, and the clamping strip 3010 is provided in multiple groups. The inner wall of the structural inner ring body 301 is provided with a clamping groove 3011 adapted to the clamping strip 3010. By arranging the clamping strip 3010 and the clamping groove 3011 to cooperate, the assembly stability between the assembly inner ring 302 and the structural inner ring body 301 can be improved, and the axial displacement between the assembly inner ring 302 and the structural inner ring body 301 can be avoided.

[0027] An assembly outer ring 8 is provided on the outer wall of the structural outer ring 1, and an end ring cover plate 9 is provided above and below the structural outer ring 1. The two end ring cover plates 9 are connected to the fixing holes 11 at the top and bottom of the assembly outer ring 8 through fixing bolts 10. A through hole 12 is provided on the side wall of the end ring cover plate 9, which is adapted to the position of the operation hole 308. By providing the through hole 12, the adjusting bolt 309 of the adjusting member can be driven on the outside of the entire needle roller bearing to control the limit arc plate 303 to hold the shaft rod or release the holding state. When the adjusting bolt 309 releases the contact with the limit arc plate 303, the limit arc plate 303 can be reset under the operation of the spring, thereby releasing the holding state.

[0028] The utility model arranges the inner ring used for installation with the shaft in the needle bearing to be composed of a structural inner ring body 301, an assembly inner ring 302, a limiting arc plate 303 and an adjusting member. When the needle bearing is installed with the shaft, the assembly inner ring 302 can be installed with the shaft through interference fit to facilitate disassembly. In order to ensure the installation stability between the shaft and the combined structural inner ring 3 at the same time, the limiting arc plate 303 can be driven by the adjusting member to be tightly attached to the shaft to hold the shaft to improve the fixing stability. When disassembling the needle bearing, the limiting abutment of the limiting arc plate on the shaft can be released by loosening the abutment state of the limiting arc plate 303 by the adjusting member, and the assembly inner ring 302 and the shaft can be quickly disassembled conveniently. The assembly inner ring 302 of the utility model can be disassembled from the structural inner ring body 301. When the needle bearing is disassembled by knocking, if the assembly inner ring 302 is damaged due to knocking, it can be replaced by the assembly inner ring 302 alone, thereby avoiding economic waste caused by replacing the entire needle bearing.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cylinder needle roller bearing that is easy to disassemble, characterized in that: It comprises a structural outer ring (1), a retaining frame (2) and a combined structural inner ring (3), wherein a first annular raceway (4) is arranged on the inner wall of the structural outer ring (1), a retaining frame (2) is arranged on the inner side of the structural outer ring (1), a mounting groove (5) is arranged on the retaining frame (2), a plurality of mounting grooves (5) are arranged, and a needle roller body (6) is arranged in each of the plurality of mounting grooves (5), a combined structural inner ring (3) is arranged on the inner side of the retaining frame (2), a second annular raceway (7) is arranged on the outer wall of the combined structural inner ring (3), one side of the needle roller body (6) is located inside the first annular raceway (4), and the other side of the needle roller body (6) is located inside the second annular raceway (7); The combined structural inner ring (3) comprises a structural inner ring body (301), an assembly inner ring (302), a limiting arc plate (303) and an adjusting member. An assembly inner ring (302) is arranged on the inner side of the structural inner ring body (301). The upper end and the lower end of the assembly inner ring (302) both extend out of the top and the bottom of the structural inner ring body (301). A ring frame (304) is arranged on the top and the bottom of the assembly inner ring (302). The assembly inner ring (302) is detachably mounted with the structural inner ring body (301) via the ring frame (304). Limiting grooves are symmetrically arranged on the inner wall of the assembly inner ring (302). A limiting arc plate (303) is arranged in the limiting groove via a spring. An adjusting member is arranged on the ring frame (304). The adjusting member is positionally matched with the limiting arc plate (303).

2. The cylinder needle roller bearing that is easy to disassemble according to claim 1 is characterized in that: The ring frame (304) is provided with connecting bolts (305), and a plurality of the connecting bolts (305) are provided. The top and bottom of the structural inner ring body (301) are provided with connecting holes (306) adapted to the connecting bolts (305), and the connecting bolts (305) and the connecting holes (306) are detachably installed.

3. The cylinder needle roller bearing that is easy to disassemble according to claim 2, characterized in that: The adjusting member comprises an adjusting screw hole (307), an operating hole (308) and an adjusting bolt (309); the operating hole (308) is provided on a side wall of the ring frame (304); an adjusting screw hole (307) communicating with the operating hole (308) is provided inside the operating hole (308); and an adjusting bolt (309) is provided inside the adjusting screw hole (307).

4. The cylinder needle roller bearing that is easy to disassemble according to claim 3 is characterized in that: A clamping strip (3010) is provided on the outer wall of the assembly inner ring (302), and the clamping strip (3010) is provided in multiple groups. A clamping groove (3011) adapted to the clamping strip (3010) is provided on the inner side wall of the structural inner ring body (301).

5. The cylinder needle roller bearing that is easy to disassemble according to claim 1 is characterized in that: An assembly outer ring (8) is provided on the outer wall of the structural outer ring (1), and end ring cover plates (9) are provided above and below the structural outer ring (1). The two end ring cover plates (9) are connected to the fixing holes (11) at the top and bottom of the assembly outer ring (8) through fixing bolts (10).

6. The cylinder needle roller bearing that is easy to disassemble according to claim 5, characterized in that: A through hole (12) adapted to the position of the operating hole (308) is provided on the side wall of the end ring cover plate (9).