CN216199879U - Needle roller bearing convenient to dismantle - Google Patents
Needle roller bearing convenient to dismantle Download PDFInfo
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- CN216199879U CN216199879U CN202122594360.7U CN202122594360U CN216199879U CN 216199879 U CN216199879 U CN 216199879U CN 202122594360 U CN202122594360 U CN 202122594360U CN 216199879 U CN216199879 U CN 216199879U
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- outer ring
- ring
- bearing outer
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Abstract
The utility model relates to the field of needle roller bearings, in particular to a needle roller bearing convenient to disassemble, which comprises: the bearing comprises a first bearing outer ring, a second bearing outer ring and a bearing outer ring, wherein the first bearing outer ring is annular, and a raceway with a rectangular cross section is annularly arranged on the inner wall of the first bearing outer ring; the first retainer is arranged in an inner circular hole of the bearing, the first retainer is annular, and a plurality of rectangular first placing holes are uniformly formed in the first retainer; the roller pins are arranged in each first placing hole and are cylindrical; the first bearing inner ring is arranged in the inner round hole of the first retainer, the inner wall of the first bearing inner ring is a conical surface, and the outer wall of the first bearing inner ring is in contact with the roller pin. Because the inner ring of the first bearing is a conical surface, the bearing can be removed only by single knocking when the bearing needs to be disassembled, and the possibility of damaging the roller pin is reduced.
Description
Technical Field
The utility model relates to the field of needle roller bearings, in particular to a needle roller bearing convenient to disassemble.
Background
Needle bearings are roller bearings with cylindrical rollers, which are both thin and long relative to their diameter. Such rollers are called needles. The needle roller bearing is provided with thin and long rollers, so that the radial structure is compact, the inner diameter size and the load capacity are the same as those of other types of bearings, the outer diameter is the smallest, and the needle roller bearing is particularly suitable for a bearing structure with limited radial installation size. The needle bearing is generally disassembled by adopting a knocking method: the method is simple and easy to implement, however, because the needle bearing is different from a ball bearing, the needle roller can not rotate along the axial direction of the bearing, and because the first bearing inner ring is tightly matched with a rolling shaft, the inner ring needs to be knocked for many times, and when the inner ring is knocked and detached, the needle roller generates an axial movement trend, which easily damages the needle roller, and further the whole needle bearing is scrapped.
Therefore, there is a need for an improved structure that overcomes the above-mentioned deficiencies.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a needle roller bearing convenient to disassemble, which is realized by the following technical scheme:
a needle bearing for ease of disassembly, comprising: the bearing comprises a first bearing outer ring, a second bearing outer ring and a bearing outer ring, wherein the first bearing outer ring is annular, and a raceway with a rectangular cross section is annularly arranged on the inner wall of the first bearing outer ring; the first retainer is arranged in an inner circular hole of the bearing, the first retainer is annular, and a plurality of rectangular first placing holes are uniformly formed in the first retainer; the roller pins are arranged in each first placing hole and are cylindrical; the first bearing inner ring is arranged in the inner round hole of the first retainer, the inner wall of the first bearing inner ring is a conical surface, and the outer wall of the first bearing inner ring is in contact with the roller pin.
In the above technical scheme: the first bearing outer ring is used for being matched with the bearing seat; the roller path is used for accommodating a roller pin; the first retainer is used for separating the roller pins so as to avoid resistance generated by friction between the roller pins, and the first placing hole is used for placing the roller pins; the rolling needles are used for enabling the rotary shaft and the bearing seat to realize the change of sliding into rolling, so that the friction coefficient is reduced, and the friction force is reduced; the first bearing inner ring is used for being matched with the rotating shaft, so that the roller pins cannot be damaged during disassembly.
The utility model is further provided with: and a second bearing outer ring is further arranged on one side of the first bearing outer ring and is perpendicular to the first bearing outer ring.
In the above technical scheme: because the inner wall of the first bearing inner ring in the technical scheme is a conical surface, the inner wall needs to be kept in close contact with the rolling shaft to avoid loosening, an axial force needs to be provided, and correspondingly, the technical scheme also needs to be capable of bearing a certain axial force; the second bearing outer ring is arranged to form a structure for enhancing the axial bearing capacity.
The utility model is further provided with: and a second bearing inner ring is further arranged on one side, close to the second bearing outer ring, of the first bearing inner ring, and the second bearing outer ring is parallel to the second bearing inner ring.
In the above technical scheme: the arrangement of the second bearing inner ring is used for forming a structure for enhancing the axial bearing capacity, and the arrangement of the second bearing outer ring and the second bearing inner ring in parallel is used for arranging balls between the second bearing outer ring and the second bearing inner ring.
The utility model is further provided with: one side of the second bearing outer ring, which is close to the first bearing inner ring, is provided with an annular first slideway, and one side of the second bearing inner ring, which is close to the second bearing outer ring, is provided with a corresponding second slideway.
In the above technical scheme: the arrangement of the first slide way and the second slide way enables the balls to slide in the limited tracks, so that the situation that when the balls are vertically placed, the balls and the retainer fall to the bottom due to the gravity is avoided, the retainer is in contact with the outer ring of the first bearing, and extra friction is generated.
The utility model is further provided with: and a second retainer is arranged between the second bearing inner ring and the second bearing outer ring, a plurality of circular second placing holes are uniformly formed in the second retainer, a ball is arranged in each second placing hole, and the ball is in contact with the first slide and the second slide.
In the above technical scheme: the second cage serves to separate each ball to avoid contact of the ball support while also keeping the balls rolling in the first and second raceways.
The utility model is further provided with: the second bearing inner ring is arranged on the side, with the smaller diameter, of the first bearing inner ring.
In the above technical scheme: the reason why the second bearing inner race is provided on the side where the first bearing inner race has a smaller diameter is that when the rotating shaft is fitted to the first bearing inner race, the side where the first bearing inner race has a smaller diameter is relatively distant from the rotating shaft, so the direction of the axial force is directed toward the side where the first bearing inner race has a smaller diameter.
The utility model is further provided with: the bearing comprises a first bearing outer ring and a second bearing outer ring, wherein the inner wall of one side of the first bearing outer ring is provided with threads, the second bearing outer ring is annular, and the second bearing outer ring is connected with the first bearing outer ring in a screwing mode through the threads.
In the above technical scheme: in order to facilitate the disassembly, the second bearing outer ring is detachably and fixedly arranged on the first bearing outer ring.
The utility model is further provided with: and a stop ring is also arranged on the inner wall of the outer ring of the first bearing.
In the above technical scheme: the blocking ring is used for placing the outer ring of the second bearing to rotate beyond a specified position, and the distance between the blocking ring and the inner wall of the second bearing is too close to accommodate the ball; meanwhile, the blocking ring can also block debris generated in the process of screwing from entering the bearing raceway.
The utility model discloses a needle bearing convenient to disassemble, which is compared with the prior art:
1. the needle roller bearing is convenient to disassemble, and the needle roller bearing can be taken down only by single knocking;
2. the utility model can be taken down from the rotating shaft only by single knocking, so that the possibility of damaging the needle roller of the needle roller bearing is reduced;
3. in order to adapt to the conical surface of the first bearing inner ring, the bearing can bear certain axial load.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a perspective view of another embodiment of the present invention;
FIG. 4 is a cross-sectional view of another embodiment of the present invention;
fig. 5 is an enlarged view of a cross-sectional view a of another embodiment of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings: 10-a first bearing outer race; 101-a raceway; 20-a first holder; 201-first placement holes; 30-rolling needles; 40-a first bearing inner race; 401-a first slide; 50-a second bearing outer race; 501-a second slideway; 60-second bearing inner race; 70-a second cage; 701-second placing holes; 80-a ball bearing; 90-blocking ring.
Detailed Description
The following examples are given for the detailed implementation and specific operation of the present invention, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: the bearing outer ring comprises a first bearing outer ring 10, wherein the first bearing outer ring 10 is annular, and a raceway 101 with a rectangular cross section is annularly arranged on the inner wall of the first bearing outer ring 10; the first holder 20 is arranged in an inner circular hole of the bearing, the first holder 20 is annular, and a plurality of rectangular first placing holes 201 are uniformly arranged on the first holder 20; the roller pins 30 are arranged in each first placing hole 201, and each roller pin 30 is cylindrical; and the first bearing inner ring 40 is arranged in the inner round hole of the first retainer 20, the inner wall of the first bearing inner ring 40 is a conical surface, and the outer wall of the first bearing inner ring 40 is in contact with the roller pin 30. The length of the raceway 101 is smaller than that of the first bearing outer ring 10, and the central plane of the raceway 101 is overlapped with that of the first bearing outer ring 10; the diameter of the needle roller 30 is larger than the sum of the depth of the raceway 101 and the wall thickness of the retainer, and the length of the needle roller 30 is slightly shorter than the length of the raceway 101; the length of the cage is less than the length of the first bearing inner ring 40; the outer ring surface of the first bearing inner ring 40 is in contact with the needle roller 30, and the inner conical surface of the first bearing inner ring 40 is in close fit (interference fit) with the rotating shaft with the adaptive shape.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: and a second bearing outer ring 50 is further arranged on one side of the first bearing outer ring 10, and the second bearing outer ring 50 is perpendicular to the first bearing outer ring 10. Wherein the thickness of the second bearing outer ring 50 is the same as the thickness of the first bearing outer ring 10.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: and a second bearing inner ring 60 is further arranged on one side of the first bearing inner ring 40 close to the second bearing outer ring 50, and the second bearing outer ring 50 is parallel to the second bearing inner ring 60. The second bearing inner ring 60 is annular, and the diameter of the inner ring of the second bearing inner ring 60 is smaller than the diameter of the end face of the rotating shaft.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: one side of the second bearing outer ring 50 close to the first bearing inner ring 40 is provided with an annular first slideway 401, and one side of the second bearing inner ring 60 close to the second bearing outer ring 50 is provided with a corresponding second slideway 501. The central axes of the first slide way 401 and the second slide way are located on the same straight line, and the sizes of the first slide way 401 and the second slide way 501 are the same.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: a second retainer 70 is arranged between the second bearing inner ring 60 and the second bearing outer ring 50, a plurality of circular second placing holes 701 are uniformly formed in the second retainer 70, a ball 80 is arranged in each second placing hole 701, and the ball 80 is in contact with the first slideway 401 and the second slideway 501. The thickness of the second retainer 70 is smaller than the distance between the second bearing inner ring 60 and the second bearing outer ring 50, and the diameter of the protected balls 80 is slightly larger than the distance between the first slideway 401 and the second slideway 501.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: the second bearing cone 60 is disposed on the side where the diameter of the first bearing cone 40 is smaller. The second bearing inner ring 60 and the first bearing inner ring 40 are integrally machined.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: the inner wall of one side of the first bearing outer ring 10 is provided with threads, the second bearing outer ring 50 is annular, and the second bearing outer ring 50 is connected with the first bearing outer ring 10 in a screwing mode through the threads. Wherein, the side of the second bearing outer ring 50 is provided with a thread. Further, a step may be provided on the side wall of the second bearing outer ring 50, and a notch for drinking is provided on one side of the first bearing outer ring 10 for limiting the screwing.
As shown in fig. 3 to 5, the present invention provides a needle roller bearing easy to disassemble, which includes: a stop ring 90 is further disposed on the inner wall of the first bearing outer ring 10. Wherein the thread of the first bearing outer ring 10 starts from one side edge thereof and ends at the stop ring 90.
The working principle of the utility model is as follows:
a) adding lubricating grease at the roller path and the second retainer of the roller bearing in the technical scheme;
b) matching (interference fit) the conical surface of the first bearing inner ring with the corresponding conical surface of the rolling shaft;
c) when the roller shaft rotates, the roller plays a role of changing sliding into rolling;
d) when the roller bearing of the technical scheme receives the axial load, the balls play a role in bearing the axial load and reducing friction; e) when the bearing needs to be disassembled, the shaft and the bearing can be disassembled together for the short shaft, and pressure is applied to the shaft through the outer ring of the second bearing and the inner circular hole of the inner ring of the second bearing, so that the shaft is separated; when the bearing is a long shaft, pressure is applied to the first bearing inner ring close to one side of the shaft, so that the conical surface of the first bearing inner ring is separated from the conical surface of the rotating shaft.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A needle bearing convenient to dismantle, characterized by, includes:
the bearing comprises a first bearing outer ring (10), wherein the first bearing outer ring (10) is annular, and a raceway (101) with a rectangular cross section is annularly arranged on the inner wall of the first bearing outer ring (10);
the first retainer (20) is arranged in an inner circular hole of the bearing, the first retainer (20) is annular, and a plurality of rectangular first placing holes (201) are uniformly formed in the first retainer (20);
the roller pins (30) are arranged in each first placing hole (201), and each roller pin (30) is cylindrical;
the first bearing inner ring (40) is arranged in the inner round hole of the first retainer (20), the inner wall of the first bearing inner ring (40) is a conical surface, and the outer wall of the first bearing inner ring (40) is in contact with the roller pin (30).
2. The needle roller bearing for easy removal as set forth in claim 1, wherein: and a second bearing outer ring (50) is further arranged on one side of the first bearing outer ring (10), and the second bearing outer ring (50) is perpendicular to the first bearing outer ring (10).
3. The needle roller bearing facilitating disassembly as claimed in claim 2, wherein: and a second bearing inner ring (60) is further arranged on one side, close to the second bearing outer ring (50), of the first bearing inner ring (40), and the second bearing outer ring (50) is parallel to the second bearing inner ring (60).
4. A needle bearing for ease of removal as set forth in claim 3 wherein: one side of the second bearing outer ring (50) close to the first bearing inner ring (40) is provided with an annular first slideway (401), and one side of the second bearing inner ring (60) close to the second bearing outer ring (50) is provided with a corresponding second slideway (501).
5. The needle roller bearing for easy removal as set forth in claim 4, wherein: a second retainer (70) is arranged between the second bearing inner ring (60) and the second bearing outer ring (50), a plurality of circular second placing holes (701) are uniformly formed in the second retainer (70), a ball (80) is arranged in each second placing hole (701), and the ball (80) is in contact with the first slideway (401) and the second slideway (501).
6. The needle roller bearing for easy removal as set forth in claim 5, wherein: the second bearing inner ring (60) is arranged on the side, with the smaller diameter, of the first bearing inner ring (40).
7. The needle roller bearing facilitating disassembly as claimed in claim 2, wherein: the bearing is characterized in that threads are arranged on the inner wall of one side of the first bearing outer ring (10), the second bearing outer ring (50) is annular, and the second bearing outer ring (50) is connected with the first bearing outer ring (10) in a screwing mode through the threads.
8. A needle bearing for ease of removal as set forth in claim 3 wherein: the inner wall of the first bearing outer ring (10) is also provided with a stop ring (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594360.7U CN216199879U (en) | 2021-10-27 | 2021-10-27 | Needle roller bearing convenient to dismantle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594360.7U CN216199879U (en) | 2021-10-27 | 2021-10-27 | Needle roller bearing convenient to dismantle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199879U true CN216199879U (en) | 2022-04-05 |
Family
ID=80890870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122594360.7U Active CN216199879U (en) | 2021-10-27 | 2021-10-27 | Needle roller bearing convenient to dismantle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216199879U (en) |
-
2021
- 2021-10-27 CN CN202122594360.7U patent/CN216199879U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A needle roller bearing convenient for disassembly Effective date of registration: 20220621 Granted publication date: 20220405 Pledgee: Zhejiang Jiashan Rural Commercial Bank Co.,Ltd. ganyao sub branch Pledgor: Zhejiang dewao Bearing Co.,Ltd. Registration number: Y2022990000346 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |