CN217814538U - Deep groove ball bearing for wind driven generator - Google Patents
Deep groove ball bearing for wind driven generator Download PDFInfo
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- CN217814538U CN217814538U CN202222260219.8U CN202222260219U CN217814538U CN 217814538 U CN217814538 U CN 217814538U CN 202222260219 U CN202222260219 U CN 202222260219U CN 217814538 U CN217814538 U CN 217814538U
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- retainer
- bearing
- holder
- deep groove
- ball bearing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
A deep groove ball bearing for a wind driven generator relates to a deep groove ball bearing. The utility model discloses a fitting surface when solving present wind-powered electricity generation bearing's holder riveting is only a set of, and adopts conical rivet to carry out the riveting, leads to the long-time unstable that moves of bearing, the problem that life reduced. The utility model discloses a terminal surface of first holder pocket opening one side is laminated mutually with the terminal surface of second holder pocket opening one side, and the outer periphery of boss cooperatees with the interior circumference of recess, and the holder riveting back, boss and the junction of recess are "step" shape. The inner diameter edge of first holder and second holder pocket opening one side is provided with the chamfer, and after the holder riveting, two department chamfers form the grease trap that the longitudinal section is "triangle-shaped", and the grease trap can in time be carried the lubricating grease of storing for the rolling element, provides the guarantee for the long-time steady operation of bearing in aerogenerator. The utility model discloses a bearing is arranged in aerogenerator.
Description
Technical Field
The utility model relates to a deep groove ball bearing, concretely relates to deep groove ball bearing for aerogenerator belongs to wind power generation bearing technical field.
Background
Along with the gradual increase of the market demand of the wind power bearing, the market risk of the wind power bearing also exists at any time, the special body of the wind power bearing is that the use environment is severe and the maintenance cost is very high, so that the wind power bearing is required to have very long service life and is generally required to be free of maintenance within 20 years, and if the wind power bearing is damaged within 20 years, the maintenance cost is very high. Therefore, various factors are considered in the product design process, and the structural design and the material selection are required to be refined, so that the stability of the bearing is increased as much as possible, and the service life of the bearing is prolonged.
The patent with publication number CN112594280A discloses a novel deep groove ball bearing for a wind driven generator, wherein a retainer of the bearing is riveted by two half retainers together, so that the bearing is prevented from being damaged due to deviation of a steel ball from a preset track in the running process; when the two half retainers of the bearing are riveted, only one group of end surfaces on one side of the opening of the pocket are matched, the mass of the heavy wind power bearing can reach hundreds of jin, the inertia can be very large in the operation process, and the group of end surfaces matched with the half retainers are easily asynchronous in the circumferential direction; and the conical rivet adopted in riveting can increase the inconsistency of size matching due to the floating within the tolerance range, thereby increasing the instability of the bearing in the long-time operation of the wind driven generator and reducing the service life of the bearing.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the present wind-powered electricity generation bearing's the fitting surface when holder rivets only a set of, and adopt conical rivet to carry out the riveting, lead to the long-time unstable of operation of bearing, the problem that life reduces. Further provides a deep groove ball bearing for the wind driven generator.
The technical scheme of the utility model is that: a deep groove ball bearing for a wind driven generator comprises a bearing inner ring, rolling bodies and a bearing outer ring, wherein the rolling bodies are uniformly distributed along the circumferential direction of roller paths of the bearing inner ring and the bearing outer ring, and the deep groove ball bearing further comprises a first retainer, a second retainer and rivets.
The terminal surface of first holder pocket opening one side is provided with the recess, the terminal surface of second holder pocket opening one side is provided with the boss, the diameter of the outer periphery of boss equals with the circumferential diameter in the recess, behind the coaxial embedding recess of boss, first holder and second holder pass through the rivet riveting together, the rolling element is arranged in the pocket hole after first holder and the riveting of second holder, the internal diameter edge of first holder and second holder pocket opening one side is provided with the chamfer, and the chamfer forms the grease trap that the longitudinal section is "triangle-shaped" after first holder and the riveting of second holder.
Compared with the prior art, the utility model has the following effect:
1. the utility model discloses after first holder 2 and the riveting of second holder 4, boss 4-1 is "step" shape with recess 2-1's combination department, promptly: the end face of one side of the opening of the pocket of the first retainer 2 is attached to the end face of one side of the opening of the pocket of the second retainer 4, the outer circumferential surface of the boss 4-1 is matched with the inner circumferential surface of the groove 2-1, and 2 groups of surfaces are contacted after riveting, so that friction force is increased, the retainer is riveted more firmly, the service life of the bearing is prolonged, and long-time stable operation of the bearing in the wind driven generator is guaranteed.
2. The chamfer angle 7 is arranged at the inner diameter edge of one side of the pocket opening of the first retainer 2 and the second retainer 4, so that the weight of the retainers is reduced; after the retainer is riveted, the two chamfers 7 form a grease condensing groove 8 with a triangular longitudinal section, the bearing is lubricated by grease when running in the wind driven generator, the grease condensing groove 8 can store lubricating grease, the grease condensing groove 8 is communicated with the pocket in the circumferential direction of the retainer, the stored lubricating grease can be conveyed to the rolling body 3, and the rolling body 3 is lubricated.
Drawings
Fig. 1 is an exploded view of the bearing of the present invention;
fig. 2 is an isometric view of the first holder 2 of the present invention;
FIG. 3 is an enlarged view of a portion at I in FIG. 2, in which an arrow indicates a dimension H of the chamfer 7 at the inner diameter edge of the first holder 2;
fig. 4 is an isometric view of the second holder 4 of the present invention;
fig. 5 is a partial enlarged view at ii in fig. 4, in which an arrow indicates a dimension H of the chamfer 7 at the inner diameter edge of the second cage 4;
fig. 6 is a schematic view of the riveting of the retainer of the present invention;
FIG. 7 is a cross-sectional view of FIG. 6;
fig. 8 is a partial enlarged view of fig. 7 at iii.
In the figure: 1. the bearing comprises a bearing inner ring, 2, a first retainer, 2-1, a groove, 3, a rolling body, 4, a second retainer, 4-1, a boss, 5, a bearing outer ring, 6, a rivet, 7, a chamfer, 8 and a grease trap.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the drawings of the embodiments of the present invention are combined below, and the technical solutions of the embodiments of the present invention are clearly and completely described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The first embodiment is as follows: the present embodiment is described with reference to fig. 1 to 8, and the deep groove ball bearing for the wind turbine generator of the present embodiment includes a bearing inner ring 1, rolling elements 3, and a bearing outer ring 5, where the rolling elements 3 are uniformly distributed along the circumferential direction of raceways of the bearing inner ring 1 and the bearing outer ring 5; it also comprises a first cage 2, a second cage 4 and a rivet 6.
The end face of one side of a pocket opening of the first retainer 2 is provided with a groove 2-1, the end face of one side of a pocket opening of the second retainer 4 is provided with a boss 4-1, the diameter of the outer circumferential face of the boss 4-1 is equal to that of the inner circumferential face of the groove 2-1, after the boss 4-1 is coaxially embedded into the groove 2-1, the first retainer 2 and the second retainer 4 are riveted together through a rivet 6, a rolling body 3 is arranged in the pocket after the first retainer 2 and the second retainer 4 are riveted, the inner diameter edges of one side of the pocket opening of the first retainer 2 and the pocket opening of the second retainer 4 are provided with chamfers 7, and the chamfers 7 form a grease trap 8 with a triangular longitudinal section after the first retainer 2 and the second retainer 4 are riveted.
After the first retainer 2 and the second retainer 4 of the present embodiment are riveted, the joint of the boss 4-1 and the groove 2-1 is in a "step" shape, that is: the end face of one side of the opening of the pocket of the first retainer 2 is attached to the end face of one side of the opening of the pocket of the second retainer 4, the outer circumferential surface of the boss 4-1 is matched with the inner circumferential surface of the groove 2-1, and 2 groups of surfaces are contacted after riveting, so that friction force is increased, the retainer is riveted more firmly, the service life of the bearing is prolonged, and long-time stable operation of the bearing in the wind driven generator is guaranteed.
The bearing of the embodiment adopts grease lubrication when the bearing runs in the wind driven generator, the bearing adopts a rolling element guiding mode, and the retainer is not contacted with the flange surfaces of the bearing inner ring 1 and the bearing outer ring 5, so that the storage space of lubricating grease is enlarged.
In the embodiment, the chamfer 7 is arranged at the inner diameter edge of the pocket opening side of the first retainer 2 and the second retainer 4, so that the weight of the retainers is reduced; after the retainer is riveted, two chamfers 7 form a grease condensing groove 8 with a triangular longitudinal section, the grease condensing groove 8 can store lubricating grease, the grease condensing groove 8 is communicated with the pockets in the circumferential direction of the retainer, and the grease condensing groove 8 timely conveys the stored lubricating grease to the rolling bodies 3 along with the consumption of the lubricating grease between the rolling bodies 3 and the pockets, so that the lubrication of the rolling bodies 3 is guaranteed.
The second embodiment is as follows: the present embodiment will be described with reference to fig. 2 to 5, and the chamfer 7 of the present embodiment has a dimension (H) of 1 to 3mm. Other components and connections are the same as those in the first embodiment.
The third concrete implementation mode: the present embodiment will be described with reference to fig. 7 and 8, in which the rivet 6 of the present embodiment is a cylindrical rivet 6, and both ends of the rivet 6 are half-headed nuts. According to the arrangement, the cylindrical rivet 6 with a smaller tolerance range is adopted, so that the matching between the outer circumferential surface of the rivet 6 and the rivet hole is more precise, and the stability of the bearing in the long-time operation of the wind driven generator is improved. Other components and connection relationships are the same as those in the first or second embodiment.
The fourth concrete implementation mode is as follows: the first retainer 2 and the second retainer 4 of the present embodiment are made of cast copper alloy, and the pockets are spherical pockets, and the gap between the pockets and the rolling elements 3 is reasonably set, so that the phenomenon that the guiding is not inaccurate due to too large gap between the rolling elements 3 and the retainers and the frictional heat is not generated due to too small gap is avoided. Other components and connection relationships are the same as those in the first, second or third embodiment.
The fifth concrete implementation mode: referring to fig. 1, the bearing inner ring 1 and the bearing outer ring 5 according to the present embodiment are made of GCr15SiMn, and specifically, GCr15SiMn after electroslag remelting is used. So set up, on the one hand, GCr15 SiMn's hardness is high, the wearability is good, has higher compressive strength and fatigue limit, and has certain toughness, and the hardenability is good, is fit for the abominable operational environment of wind-powered electricity generation bearing. On the other hand, GCr15SiMn remelted by electroslag has high purity, less nonmetallic inclusion and uniform metallographic structure and chemical components. Other components and connection relationships are the same as those in the first, second, third or fourth embodiment.
The sixth specific implementation mode: referring to fig. 1, the groove curvature coefficient of the raceway of the bearing inner ring 1 and the groove curvature coefficient of the raceway of the bearing outer ring 5 of the present embodiment are 0.515 and 0.525, respectively. So set up, can guarantee the lower friction consumption of bearing, can increase the bearing capacity of bearing again, be favorable to the bearing to operate steadily, the noise is little, generate heat few when the operation, and then prolong the life of bearing. Other components and connection relationships are the same as those in the first, second, third, fourth or fifth embodiment.
Principle of operation
When the utility model is assembled, the end face of one side of the opening of the pocket of the first retainer 2 is attached to the end face of one side of the opening of the pocket of the second retainer 4, the outer circumferential surface of the boss 4-1 is matched with the inner circumferential surface of the groove 2-1, after the first retainer 2 and the second retainer 4 are riveted through the rivet 6, the joint of the boss 4-1 and the groove 2-1 is in a step shape, and 2 groups of surface contact are formed after riveting; the friction force is increased, the riveting of the retainer is firmer, the precision of the assembled finished bearing is P5 grade, and the bearing clearance is C4. Chamfers 7 are arranged at the inner diameter edges of the pocket openings of the first retainer 2 and the second retainer 4, so that the weight of the retainers is reduced; after the retainer is riveted, the two chamfers 7 form a grease condensing groove 8 with a triangular longitudinal section, the grease condensing groove 8 can store lubricating grease, the grease condensing groove 8 is communicated with the pockets in the circumferential direction of the retainer, and along with the consumption of the lubricating grease between the rolling bodies 3 and the pockets, the grease condensing groove 8 timely conveys the stored lubricating grease to the rolling bodies 3, so that the lubrication of the rolling bodies 3 is guaranteed, and the long-time stable operation of the bearing in the wind driven generator is guaranteed.
The present invention has been disclosed in the above embodiments, but the present invention is not limited thereto, and any person skilled in the art will not depart from the technical solution of the present invention, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments still belong to the technical solution scope of the present invention.
Claims (6)
1. The utility model provides a deep groove ball bearing for aerogenerator, it includes bearing inner race (1), rolling element (3) and bearing inner race (5), its characterized in that: the device also comprises a first retainer (2), a second retainer (4) and a rivet (6);
the end face of one side of the pocket opening of the first retainer (2) is provided with a groove (2-1), the end face of one side of the pocket opening of the second retainer (4) is provided with a boss (4-1), the diameter of the outer circumferential face of the boss (4-1) is equal to that of the inner circumferential face of the groove (2-1), the boss (4-1) is coaxially embedded into the groove (2-1), the first retainer (2) and the second retainer (4) are riveted together through a rivet (6), the rolling body (3) is arranged in the pocket after the first retainer (2) and the second retainer (4) are riveted, a chamfer (7) is arranged at the inner diameter edge of one side of the pocket opening of the first retainer (2) and the second retainer (4), and the chamfer (7) forms a condensed grease groove (8) with a triangular longitudinal section after the first retainer (2) and the second retainer (4) are riveted.
2. The deep groove ball bearing for the wind power generator as claimed in claim 1, wherein: the size (H) of the chamfer (7) is 1-3 mm.
3. The deep groove ball bearing for the wind power generator as claimed in claim 2, wherein: the rivet (6) is a cylindrical rivet (6), and two ends of the rivet (6) are semicircular head screw caps.
4. The deep groove ball bearing for the wind power generator as claimed in claim 3, wherein: the first retainer (2) and the second retainer (4) are made of cast copper alloy.
5. The deep groove ball bearing for the wind power generator as claimed in claim 4, wherein: the bearing inner ring (1) and the bearing outer ring (5) are made of GCr15SiMn.
6. The deep groove ball bearing for the wind power generator as claimed in claim 5, wherein: the groove curvature coefficient of the raceway of the bearing inner ring (1) is 0.515, and the groove curvature coefficient of the raceway of the bearing outer ring (5) is 0.525.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222260219.8U CN217814538U (en) | 2022-08-26 | 2022-08-26 | Deep groove ball bearing for wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222260219.8U CN217814538U (en) | 2022-08-26 | 2022-08-26 | Deep groove ball bearing for wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217814538U true CN217814538U (en) | 2022-11-15 |
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ID=83976282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222260219.8U Active CN217814538U (en) | 2022-08-26 | 2022-08-26 | Deep groove ball bearing for wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217814538U (en) |
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2022
- 2022-08-26 CN CN202222260219.8U patent/CN217814538U/en active Active
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