CN216199876U - Low-friction nylon retainer for cylindrical roller bearing of subway axle box - Google Patents
Low-friction nylon retainer for cylindrical roller bearing of subway axle box Download PDFInfo
- Publication number
- CN216199876U CN216199876U CN202122082088.4U CN202122082088U CN216199876U CN 216199876 U CN216199876 U CN 216199876U CN 202122082088 U CN202122082088 U CN 202122082088U CN 216199876 U CN216199876 U CN 216199876U
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- retainer
- boss
- wall
- cylindrical roller
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- 239000004677 Nylon Substances 0.000 title claims abstract description 17
- 229920001778 nylon Polymers 0.000 title claims abstract description 17
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000004323 axial length Effects 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 abstract description 10
- 230000017525 heat dissipation Effects 0.000 abstract description 3
- 238000005461 lubrication Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Rolling Contact Bearings (AREA)
Abstract
A kind of subway axle box uses the low friction nylon cage of the cylindrical roller bearing, including: the retainer comprises a retainer body, wherein the whole retainer body is of an annular structure, rectangular pockets with the same size are uniformly arranged on a ring body at intervals, the pockets penetrate through the inner wall and the outer wall of the retainer body, retainer beams are arranged between every two adjacent pockets, and an inner boss is arranged in the middle of the inner side wall of each retainer beam; every pocket hole correspondence is provided with an outer boss, outer boss set up on the cage body outer wall, be located the left side in pocket hole. The beneficial effects are that: the outer boss on the left side of the retainer and the reinforcing ribs arranged on the right side of the retainer can enable the left side and the right side of the retainer to have the same quality, and dynamic balance is kept under high-speed rotation. The design of pocket hole has better parcel nature promptly, suitably reduces the area of contact of pocket hole and rolling element again, and the existence of circular arc groove on the inner boss can multiplicable rolling element and the lubrication and the heat dissipation between the pocket hole, has reduced the friction in the bearing working process, has prolonged the life-span of bearing.
Description
Technical Field
The utility model relates to the technical field of bearing retainers, in particular to a cylindrical roller bearing low-friction nylon retainer for a subway axle box.
Background
The reliability requirement on the bearing is high during the operation of the subway, and the bearing is easy to be invaded by external impurities during the operation to influence the use of the bearing, so that the double-side belt sealing type bearing is mostly adopted. As shown in fig. 4, the bearing is a cylindrical roller bearing used in a pair with two sealing sides on a certain type of subway. Under high rotating speed, the contact state between the rolling body and the retainer of the subway bearing is complex, more heat is easily generated, the heat in the sealed bearing is not easy to exchange heat with the outside, and lubricating grease is easy to lose under the condition of higher temperature, so that the conditions of higher bearing temperature rise, early failure of the bearing and the like are caused.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide a cylindrical roller bearing low-friction nylon retainer for a subway axle box, in order to improve the contact state of the retainer and a rolling body and the like.
In order to achieve the purpose, the utility model adopts the following technical scheme: a kind of subway axle box uses the low friction nylon cage of the cylindrical roller bearing, including: the retainer comprises a retainer body, wherein the whole retainer body is of an annular structure, rectangular pockets with the same size are uniformly arranged on a ring body at intervals, the pockets penetrate through the inner wall and the outer wall of the retainer body, retainer beams are arranged between every two adjacent pockets, and an inner boss is arranged in the middle of the inner side wall of each retainer beam; every pocket hole correspondence is provided with an outer boss, outer boss set up on the cage body outer wall, be located the left side in pocket hole.
The axial length of the inner boss is one half of the axial length of the retainer beam, and arc grooves are respectively formed in the middle of the inner boss and located on two sides of the retainer beam.
The radial inner wall of the pocket is composed of a pocket arc surface and a pocket flat surface, the pocket arc surface is adjacent to the inner wall of the retainer body, and the pocket flat surface is adjacent to the outer wall of the retainer body.
The outer boss is integrally of a trapezoidal structure, the length of the lower bottom surface of the outer boss is consistent with that of the corresponding pocket, the length of the upper surface of the outer boss is smaller than that of the lower bottom surface, the width of the outer boss is consistent with that of the pocket, and the height of the outer boss is matched with the flange of the bearing outer ring.
The retainer comprises a retainer body and is characterized in that two end faces of the retainer body are respectively provided with an annular groove, a reinforcing rib for balancing weight is arranged in the annular groove arranged on the right end face, and the reinforcing rib corresponds to the central position of a pocket and is uniformly arranged in the annular groove.
The right side of the retainer body is provided with a reinforcing rib which is matched with an outer boss arranged on the left side of the retainer body, so that the left side and the right side of the retainer have the same quality, and dynamic balance is kept under high-speed rotation.
The utility model has the beneficial effects that: and the high-speed stability of the bearing can be ensured by double guidance of the rolling body and the outer ring flange in the running process. The outer lug boss and the reinforcing ribs in the annular groove on the right side can ensure that the left side and the right side of the retainer have the same quality, and dynamic balance is kept under high-speed rotation. The design of pocket inside wall has better parcel nature promptly, suitably reduces the area of contact of pocket and rolling element again, and the existence of circular arc groove on the interior boss, and lubrication and heat dissipation between multiplicable rolling element and the pocket have reduced the friction in the bearing course of operation, have prolonged the life-span of bearing.
Drawings
Fig. 1 is a schematic view of the structure of the cage of the present invention.
FIG. 2 is a schematic view of the pocket structure of the present invention.
FIG. 3 is a schematic view of a right side annular groove internal bead of the present invention.
FIG. 4 is a cylindrical roller bearing structure for use in a double-sided belt seal mating.
In the figure: 1. the cage comprises a cage body, 2, pocket holes, 3, a cage beam, 4, inner bosses, 5, arc grooves, 6, outer bosses, 7, annular grooves, 8, reinforcing ribs, 9, pocket hole arc surfaces and 10, pocket hole flat surfaces.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the drawings in the specification, and it should be noted that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a low friction nylon retainer for a cylindrical roller bearing of a subway axle box comprises: the retainer comprises a retainer body 1, wherein the whole retainer body 1 is of an annular structure, rectangular pockets 2 with the same size are uniformly arranged on a ring body at intervals, the pockets 2 penetrate through the inner wall and the outer wall of the retainer body 1, retainer beams 3 are arranged between every two adjacent pockets 2, and an inner boss 4 is arranged in the middle of the inner side wall of each retainer beam 3; every pocket 2 corresponds and is provided with an outer boss 6, outer boss 6 set up on 1 outer wall of cage body, be located the left side of pocket 2. The axial length of the inner boss 4 is half of the axial length of the retainer beam 3, and arc grooves 5 are respectively arranged at the two sides of the retainer beam 3 in the middle of the inner boss 4. The radial inner wall of the pocket 2 is composed of a pocket arc surface 9 and a pocket flat surface 10, the pocket arc surface 9 is adjacent to the inner wall of the retainer body 1, and the pocket flat surface 10 is adjacent to the outer wall of the retainer body 1. The outer boss 6 is integrally of a trapezoidal structure, the length of the lower bottom surface of the outer boss is consistent with that of the corresponding pocket 2, the length of the upper surface of the outer boss is smaller than that of the lower bottom surface, the width of the outer boss 6 is consistent with that of the pocket 2, and the height of the outer boss 6 is matched with the flange of the bearing outer ring. The retainer comprises a retainer body 1 and is characterized in that two end faces of the retainer body 1 are respectively provided with an annular groove 7, a reinforcing rib 8 for balancing weight is arranged in the annular groove 7 arranged on the right end face, and the reinforcing rib 8 corresponds to the center of the pocket 2 and is uniformly arranged in the annular groove 7. The right side of the retainer body 1 is provided with the reinforcing ribs 8 which are matched with the outer lug boss 6 arranged on the left side of the retainer body 1, so that the left side and the right side of the retainer body 1 have the same mass, and dynamic balance is kept under high-speed rotation.
When the utility model is used: the nylon retainer can be guided by the rolling body and the outer ring flange matched with the outer boss 6 in the running process, so that the high-speed stability of the nylon retainer is ensured. The reinforcing rib 8 arranged on the right side of the retainer body 1 is matched with the outer boss 6 arranged on the left side of the retainer body 1, so that the left side and the right side of the retainer body 1 have the same quality, and good dynamic balance is kept under high-speed rotation. The design of the pocket hole circular arc surface 9 of the radial inner wall of the pocket hole 2 and the pocket hole straight surface 10 has good wrapping performance, the contact area of the pocket hole 2 and the rolling bodies is properly reduced, the existence of the circular arc groove 5 on the inner boss 4 can increase the lubrication and heat dissipation between the rolling bodies and the pocket hole 2, the friction in the working process of the bearing is reduced, and the service life of the bearing is prolonged. The nylon retainer is used on the cylindrical roller bearing used in a sealing pairing mode on two sides of a subway, the design of sealing structures on two sides is not influenced, and the nylon retainer can also be applied to other cylindrical roller bearings.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
The present invention is not described in detail in the prior art.
Claims (6)
1. A kind of subway axle box uses the low friction nylon cage of the cylindrical roller bearing, including: a cage body (1); the method is characterized in that: the retainer body (1) is of an annular structure as a whole, rectangular pockets (2) with the same size are arranged on a ring body at intervals and uniformly, the pockets (2) penetrate through the inner wall and the outer wall of the retainer body (1), retainer beams (3) are arranged between every two adjacent pockets (2), and an inner boss (4) is arranged in the middle of the inner wall of each retainer beam (3); every pocket (2) correspondence is provided with an outer boss (6), outer boss (6) set up on retainer body (1) outer wall, be located the left side of pocket (2).
2. The cylindrical roller bearing low-friction nylon retainer for the subway axle box as claimed in claim 1, wherein: the axial length of the inner boss (4) is half of the axial length of the retainer beam (3), and arc grooves (5) are respectively arranged at the two sides of the retainer beam (3) in the middle of the inner boss (4).
3. The cylindrical roller bearing low-friction nylon retainer for the subway axle box as claimed in claim 1, wherein: the radial side wall of the pocket (2) is composed of a pocket arc surface (9) and a pocket flat surface (10), the pocket arc surface (9) is adjacent to the inner wall of the retainer body (1), and the pocket flat surface (10) is adjacent to the outer wall of the retainer body (1).
4. The cylindrical roller bearing low-friction nylon retainer for the subway axle box as claimed in claim 1, wherein: the outer boss (6) is integrally of a trapezoid structure, the length of the lower bottom surface of the outer boss is consistent with that of the corresponding pocket (2), the length of the upper surface of the outer boss is smaller than that of the lower bottom surface, the width of the outer boss (6) is consistent with that of the pocket (2), and the height of the outer boss (6) is matched with the flange of the outer ring of the bearing.
5. The cylindrical roller bearing low-friction nylon retainer for the subway axle box as claimed in claim 1, wherein: the retainer is characterized in that annular grooves (7) are formed in two end faces of the retainer body (1), reinforcing ribs (8) used for balancing weights are arranged in the annular grooves (7) formed in the right end face, and the reinforcing ribs (8) correspond to the central positions of the pockets (2) and are uniformly arranged in the annular grooves (7).
6. The cylindrical roller bearing low-friction nylon retainer for the subway axle box as claimed in claim 5, wherein: the retainer is characterized in that a reinforcing rib (8) arranged in an annular groove (7) at the right side of the retainer body (1) is matched with an outer boss (6) arranged at the left side of the retainer body (1), so that the left side and the right side of the retainer body (1) have the same mass, and dynamic balance is kept under high-speed rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082088.4U CN216199876U (en) | 2021-08-31 | 2021-08-31 | Low-friction nylon retainer for cylindrical roller bearing of subway axle box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122082088.4U CN216199876U (en) | 2021-08-31 | 2021-08-31 | Low-friction nylon retainer for cylindrical roller bearing of subway axle box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216199876U true CN216199876U (en) | 2022-04-05 |
Family
ID=80916905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122082088.4U Active CN216199876U (en) | 2021-08-31 | 2021-08-31 | Low-friction nylon retainer for cylindrical roller bearing of subway axle box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216199876U (en) |
-
2021
- 2021-08-31 CN CN202122082088.4U patent/CN216199876U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee after: Luoyang Bearing Group Co.,Ltd. Country or region after: China Address before: 471039 No. 96, Jianxi, Luoyang District, Henan, Jianshe Road Patentee before: LUOYANG LYC BEARING Co.,Ltd. Country or region before: China |