CN216199880U - Unilateral spherical needle roller bearing - Google Patents
Unilateral spherical needle roller bearing Download PDFInfo
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- CN216199880U CN216199880U CN202122594390.8U CN202122594390U CN216199880U CN 216199880 U CN216199880 U CN 216199880U CN 202122594390 U CN202122594390 U CN 202122594390U CN 216199880 U CN216199880 U CN 216199880U
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- bearing
- needle roller
- retainer
- outer ring
- spherical surface
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Abstract
The utility model relates to the field of needle roller bearings, in particular to a one-side spherical needle roller bearing, which comprises a bearing outer ring, wherein the bearing outer ring is annular, a roller path is concavely arranged on the inner wall of the bearing outer ring, and a cambered surface is arranged on the side wall of one side of the roller path; the retainer is annular, the retainer is arranged in the inner circle of the bearing outer ring, the outer diameter of the retainer is smaller than the inner diameter of the retainer, and a plurality of accommodating grooves are uniformly formed in one side face of the retainer; the bearing needle roller is arranged in each accommodating groove, the bearing needle roller is cylindrical, one end of the bearing needle roller is a spherical surface, and the size of the spherical surface is matched with the shape of the cambered surface. The utility model can bear radial load and axial load, and has simple structure and low cost.
Description
Technical Field
The utility model relates to the field of needle roller bearings, in particular to a one-side spherical needle roller bearing.
Background
Needle bearings are roller bearings with cylindrical rollers, which are both thin and long relative to their diameter. The rotating bearing has smaller friction coefficient than a sliding bearing, high transmission efficiency, higher mechanical performance and longer service life, and can save nonferrous metal with higher price for manufacturing the sliding bearing. The needle bearing has compact radial structure, the inner diameter size and the load capacity are the same as those of other types of bearings, and the outer diameter is the smallest, so that the needle bearing is particularly suitable for a supporting structure with limited radial installation size.
However, needle bearings can only withstand radial loads and have poor load bearing capacity for axial loads. 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 one-side spherical needle roller bearing, which is realized by the following technical scheme:
a single-sided spherical needle roller bearing comprising: the bearing outer ring is annular, a raceway is concavely arranged on the inner wall of the bearing outer ring, and a cambered surface is arranged on the side wall of one side of the raceway; the retainer is annular, the retainer is arranged in the inner circle of the bearing outer ring, the outer diameter of the retainer is smaller than the inner diameter of the retainer, and a plurality of accommodating grooves are uniformly formed in one side face of the retainer; the bearing needle roller is arranged in each accommodating groove, the bearing needle roller is cylindrical, one end of the bearing needle roller is a spherical surface, and the size of the spherical surface is matched with the shape of the cambered surface.
In the above technical scheme: the bearing outer ring is used for being matched with the bearing seat, and the roller path is used for limiting the movement of the bearing roller pin to a certain extent so as to ensure that the roller pin cannot be separated; the retainer is used for separating each bearing needle roller, so that the stress of the whole needle roller bearing is more uniform, the needle rollers of the bearings are not contacted, and no extra friction resistance is generated; the bearing roller pin is a key part and is used for rolling to play a role in supporting and changing sliding into rolling, and one end of the roller pin is spherical, so that when the bearing roller pin receives an axial load, the roller can still roll, and a certain axial load is borne.
The utility model is further provided with: the bearing inner ring is annular and is arranged in the inner circle of the retainer.
In the above technical scheme: the bearing inner ring is adapted to contact the rotating shaft, typically in an interference fit.
The utility model is further provided with: the bearing needle roller is in contact with the bearing outer ring, and the bearing needle roller is also in contact with the bearing inner ring.
In the above technical scheme: the bearing needle roller is simultaneously contacted with the bearing inner ring and the bearing outer ring, so that sliding friction between the rotating shaft and the bearing seat is converted into rolling friction, and the friction force is greatly reduced.
The utility model is further provided with: the longitudinal section of holding tank is trapezoidal.
In the above technical solution, the longitudinal section of the receiving groove is trapezoidal to prevent the needle bearing from coming off from the retainer after moving to the upper side.
The utility model is further provided with: and one side of the raceway is also provided with an annular check ring.
In the above technical scheme: the blocking ring is used for blocking dust and the like from entering, so that the roller pin of the bearing is prevented from contacting with the dust, unstable transmission is avoided, and even the roller bearing is damaged.
The utility model is further provided with: the length of the bearing needle roller is smaller than that of the roller path.
In the above technical scheme: the length of the bearing roller needle is smaller than that of the roller path, so that the bearing roller needle can have a certain axial movement space, and the abrasion of one end of the bearing roller needle, which is provided with the spherical surface, is reduced.
The utility model is further provided with: the length of the retainer is smaller than that of the bearing outer ring, and the thickness of the retainer is smaller than the diameter of the bearing roller pin.
In the above technical scheme: the length of the retainer is equal to that of the outer ring of the rain bearing, so that when the rotating shaft is provided with a journal, the retainer and the journal generate friction; the thickness of the retainer is smaller than that of the bearing needle roller, so that the bearing needle roller can be in contact with the outer ring and the inner ring at the same time, and the retainer is not in contact with the outer ring and the inner ring.
The utility model discloses a unilateral spherical needle roller bearing, compared with the prior art:
1. one end of the bearing roller pin is provided with a spherical surface, and the inner side wall of the roller path is provided with a cambered surface for drinking, so that the bearing roller pin can bear certain axial load;
2. the utility model has simple structure and lower production cost;
3. the needle roller bearing is provided with the check ring, so that the needle roller bearing can be prevented from being damaged by dust.
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 partial cross-sectional view of the receiving slot location of the present invention;
FIG. 4 is a perspective view of another embodiment of the present invention;
fig. 5 is a cross-sectional view of another embodiment of the present invention.
The corresponding part names indicated by the numbers and letters in the drawings: 10-a bearing outer ring; 101-a raceway; 101 a-arc surface; 102-a blocking ring; 20-a cage; 201-accommodating grooves; 30-bearing needle rollers; 301-sphere; 40-inner ring of bearing.
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 with a spherical surface, which includes: the bearing outer ring 10 is annular, a raceway 101 is concavely arranged on the inner wall of the bearing outer ring 10, and an arc surface 101a is arranged on the side wall of one side of the raceway 101; the bearing comprises a retainer 20, wherein the retainer 20 is annular, the retainer 20 is arranged in the inner circle of the bearing outer ring 10, the outer diameter of the retainer 20 is smaller than the inner diameter of the retainer 20, and a plurality of accommodating grooves 201 are uniformly formed in one side surface of the retainer 20; the bearing needle roller 30 is arranged in each accommodating groove 201, the bearing needle roller 30 is cylindrical, one end of the bearing needle roller 30 is a spherical surface 301, and the size of the spherical surface 301 is matched with the shape of the cambered surface 101 a. The cross section of the raceway 101 is rectangular, the depth of the raceway 101 is half of the wall thickness of the bearing outer ring 10, the cambered surface 101a is arranged at the junction of the side wall and the bottom surface, and one end of the cambered surface 101a is far away from the rotating shaft during installation; the wall thickness of the retainer 20 is half of that of the bearing outer ring 10, and the length of the accommodating groove 201 is smaller than that of the retainer 20; one end of the bearing needle roller 30 is provided with a spherical surface 301, and the other end is a plane, so that when the bearing needle roller is installed, one end provided with the spherical surface 301 is far away from the rotating shaft, and the plane end is close to the rotating shaft.
As shown in fig. 4 and 5, the needle roller bearing with a spherical surface on one side provided by the present invention includes: the bearing retainer further comprises a bearing inner ring 40, wherein the bearing inner ring 40 is annular, and the bearing inner ring 40 is arranged in the inner circle of the retainer 20. The outer diameter of the bearing inner ring 40 is slightly smaller than the difference obtained by subtracting the diameter of the bearing needle roller 30 from the inner diameter of the bearing outer ring 10, and the inner circle diameter of the bearing inner ring 40 is adapted to the shaft end diameter of the rolling shaft.
As shown in fig. 1 to 5, the present invention provides a needle roller bearing with a spherical surface, which includes: the bearing needle rollers 30 are in contact with the bearing outer race, and the bearing needle rollers 30 are also in contact with the bearing inner race 40. The cylindrical surface of the bearing needle roller 30, the inner wall of the bearing outer ring 10 and the outer wall of the bearing inner ring 40 all have roughness requirements and need to be smooth so as to reduce friction force during rotation; in addition, lubricating oil can be added into the raceway 101 to reduce frictional resistance.
As shown in fig. 3, the needle roller bearing with a spherical surface on one side according to the present invention includes: the longitudinal section of the accommodating groove 201 is trapezoidal. The slope of the waist of the trapezoid of the cross section of the receiving groove 201 is large, so that the bottom of the bearing needle roller 30 is lower than the inner ring of the retainer 20 and the top of the bearing needle roller is higher than the outer ring of the retainer 20 when the bearing needle roller is located in the receiving groove 201.
As shown in fig. 1 to 5, the present invention provides a needle roller bearing with a spherical surface, which includes: an annular stop ring 102 is also provided on one side of the raceway 101. Wherein, when the bearing inner ring 40 is present, the inner ring size of the blocker ring is not greater than the outer diameter of the bearing inner ring 40 to avoid contact of the blocker ring 102-with the rotating shaft, creating additional drag.
As shown in fig. 2 and 5, the needle roller bearing with a spherical surface on one side provided by the present invention includes: the length of the bearing needle roller 30 is smaller than that of the raceway 101. The length of the bearing needle roller 30 should be greater than that of the receiving groove 201, and when the bearing needle roller 30 is installed, the end of the bearing needle roller 30 provided with the spherical surface 301 should be located outside the receiving groove 201.
As shown in fig. 2 and 5, the needle roller bearing with a spherical surface on one side provided by the present invention includes: the length of the retainer 20 is less than that of the bearing outer ring 10, and the thickness of the retainer 20 is less than the diameter of the bearing needle roller 30. The length of the cage 20 should also be longer than two thirds of the length of the bearing needle roller 30 to ensure that the receiving groove 201 acts as a contact limiting function for the bearing needle roller 30.
The working principle of the utility model is as follows:
a) the method comprises the following steps of (1) mounting a needle bearing on a rotating shaft, and enabling one end of a needle roller, which is provided with a spherical surface, to be far away from the rotating shaft;
b) fixing the bearing outer ring of the needle bearing on the bearing seat;
c) the rotating shaft rotates;
d) when the rotating shaft generates slight axial displacement during rotation, the length of the bearing needle roller is greater than that of the roller path, so that the bearing needle roller can be automatically adjusted and reset;
e) when the rotating shaft receives an axial load, the spherical surface of the bearing roller pin is in contact with the cambered surface of the raceway, so that the bearing roller pin can still rotate, and the side edge of the raceway bears the axial load.
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 (7)
1. A single-sided spherical needle roller bearing, comprising:
the bearing outer ring (10) is annular, a raceway (101) is concavely arranged on the inner wall of the bearing outer ring (10), and an arc surface (101a) is arranged on the side wall of one side of the raceway (101);
the bearing comprises a retainer (20), wherein the retainer (20) is annular, the retainer (20) is arranged in the inner circle of the bearing outer ring (10), the outer diameter of the retainer (20) is smaller than the inner diameter of the retainer (20), and a plurality of accommodating grooves (201) are uniformly formed in one side surface of the retainer (20);
the bearing needle roller (30) is arranged in each accommodating groove (201), the bearing needle roller (30) is cylindrical, one end of the bearing needle roller (30) is a spherical surface (301), and the size of the spherical surface (301) is matched with the shape of the cambered surface (101 a).
2. The needle roller bearing with one spherical surface according to claim 1, wherein: the bearing structure is characterized by further comprising a bearing inner ring (40), wherein the bearing inner ring (40) is annular, and the bearing inner ring (40) is arranged in the inner circle of the retainer (20).
3. The needle roller bearing with one spherical surface according to claim 2, wherein: the bearing needle rollers (30) are in contact with the bearing outer ring (10), and the bearing needle rollers (30) are also in contact with the bearing inner ring (40).
4. The needle roller bearing with one spherical surface according to claim 1, wherein: the longitudinal section of the accommodating groove (201) is trapezoidal.
5. The needle roller bearing with one spherical surface according to claim 1, wherein: and an annular check ring (102) is also arranged on one side of the raceway (101).
6. The needle roller bearing with one spherical surface according to claim 1, wherein: the length of the bearing needle roller (30) is smaller than that of the raceway (101).
7. The needle roller bearing with one spherical surface according to claim 1, wherein: the length of the retainer (20) is smaller than that of the bearing outer ring (10), and the thickness of the retainer (20) is smaller than the diameter of the bearing needle roller (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594390.8U CN216199880U (en) | 2021-10-27 | 2021-10-27 | Unilateral spherical needle roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122594390.8U CN216199880U (en) | 2021-10-27 | 2021-10-27 | Unilateral spherical needle roller bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199880U true CN216199880U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122594390.8U Active CN216199880U (en) | 2021-10-27 | 2021-10-27 | Unilateral spherical needle roller bearing |
Country Status (1)
| Country | Link |
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| CN (1) | CN216199880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2615854A (en) * | 2022-01-11 | 2023-08-23 | Skf Ab | Bearing cage assembly with one-piece annular retainer |
-
2021
- 2021-10-27 CN CN202122594390.8U patent/CN216199880U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2615854A (en) * | 2022-01-11 | 2023-08-23 | Skf Ab | Bearing cage assembly with one-piece annular retainer |
| US11828329B2 (en) | 2022-01-11 | 2023-11-28 | Aktiebolaget Skf | Bearing cage assembly with one-piece annular retainer |
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