CN116792403A - High-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing - Google Patents
High-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing Download PDFInfo
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- CN116792403A CN116792403A CN202310695567.4A CN202310695567A CN116792403A CN 116792403 A CN116792403 A CN 116792403A CN 202310695567 A CN202310695567 A CN 202310695567A CN 116792403 A CN116792403 A CN 116792403A
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- Prior art keywords
- retainer
- tapered roller
- main shaft
- row tapered
- wind power
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
- F16C33/585—Details of specific parts of races of raceways, e.g. ribs to guide the rollers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
- F16C2380/28—Motor, generator coupled with a flywheel
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a high-reliability welded type single-row tapered roller main shaft bearing with a strut retainer, wherein a plurality of hollow tapered rollers are arranged between an inner ring and an outer ring, and a retainer large washer and a retainer small washer are arranged along the circumferential direction of two ends of each tapered roller; the threaded ends of the two sets of single-row tapered roller bearing retainer struts arranged back to back on the main shaft are opposite to the threaded directions of the large washers, and the bearings enable the struts and the large washers to be in a threaded tight fit state all the time in the running process, so that the self-locking effect is achieved, the large washers with threads are prevented from being separated from the struts, and the problems of deformation, open welding, frame scattering and the like of the struts and the retainer washers due to impact are prevented; the side wall of the inner ring raceway is provided with a slightly convex curved surface and annular cone angle structures at two ends of a roller center hole, so that friction force between the tapered rollers and the support and between the tapered rollers and the inner ring raceway is reduced, higher reliability is achieved, and the operation reliability and the service life of the wind power single-row tapered roller main shaft bearing configured in pairs are improved.
Description
Technical Field
The invention relates to the technical field of wind power bearings, in particular to a single-row tapered roller main shaft bearing of a high-reliability welding type pillar retainer.
Background
In the modern industry, bearings are widely used in various types of mechanical equipment, the main function of which is to support the operation of rotating parts. The wind power main bearing is a core component of the megawatt wind turbine, and is extremely difficult to maintain under the complex working conditions of heavy load, variable rotation speed, alternating load, vibration and the like for a long time, so that the stability and reliability of the main bearing play an important role in the normal operation of the wind turbine. In the wind turbine generator system, spherical roller bearings, cylindrical roller bearings and tapered roller bearings are used as main bearings. The arrangement form of the main bearing of the wind turbine generator mainly comprises bearings with 3-point support and 2-point support, wherein the bearing with 3-point support is a main shaft bearing and a gear box bearing, and has large axial play and poor rigidity; in the bearing arrangement of 2-point support, the paired arrangement scheme of the single-row tapered roller bearings has good structural rigidity and good guiding precision, and meanwhile, the overturning moment can be borne, and the combination of the two sets of single-row tapered roller bearings is a preferable scheme of the main shaft bearing of the high-power wind turbine so as to ensure that the service lives of the bearings and the fan are basically consistent.
The two sets of single-row tapered roller bearings on the wind power main shaft are installed back to back, so that the actual bearing distance of the bearings is mainly increased, bearing supporting counter force is reduced, the capacity of a system for bearing overturning moment is improved, and the single-row tapered roller bearing double-bearing scheme has the advantages that the bearing stress is small, and the cost is relatively low. The oversized tapered roller bearing retainer mainly comprises two types, namely stamping and strut welding, a large number of dies are needed in the processing process of the stamping retainer, the process is complex, the input production cost is high, and the bearing capacity of the bearing is reduced; the ultra-large tapered roller bearing is limited by cost and use conditions, a strut welding retainer is usually selected and welded by a retainer ring and struts, and due to the fact that the bearing is subjected to large instantaneous impact load during working and the action of rolling friction and centrifugal force, friction between a roller and the struts drives threaded connection parts of the struts and the retainer washer to move relatively, the retainer is often subjected to open welding and fracture due to load stress of the bearing during welding parts, the retainer is deformed, welded and scattered, and the like, and finally interference of bearing parts is caused to damage the bearing. In actual use, the retainer washer welded with the strut is loosened in the failure of the connecting part due to impact stress, and the retainer damage occupies a larger proportion in the failure mode of the bearing. In addition, the contact area between the tapered roller and the strut and the inner ring rollaway nest is large when the bearing works, the friction is large, the lubrication contact is poor, the friction is easy to damage and heat, the bearing is caused to have abnormal operation, noise and damage to the rolling bodies and the inner ring rollaway nest and the outer ring rollaway nest, and the operation reliability and the service life of the wind power single-row tapered roller main shaft bearing are seriously restricted.
Disclosure of Invention
Aiming at the problems, the invention provides the high-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing, which adopts the optimized designs of the tapered roller bearing that the screw threads of the strut screw thread ends are oppositely arranged, the side wall slightly convex curved surface of the inner ring raceway is arranged, the cone angle structures of the rings at the two ends of the roller center hole and the like, reduces the friction force between the tapered roller and the strut and the inner ring raceway, prevents the problems of deformation, open welding, frame scattering and the like of the strut and the retainer washer caused by impact, has higher reliability, and improves the operation reliability and the service life of the wind power single-row tapered roller main shaft bearing configured in pairs.
The technical scheme adopted by the invention for achieving the purpose is as follows: a high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing comprises an inner ring, an outer ring, a retainer and tapered rollers, wherein a plurality of hollow tapered rollers are arranged between the inner ring and the outer ring, and a retainer large washer and a retainer small washer are installed along the circumferential direction of two ends of each tapered roller; the strut penetrates through the central hole of the tapered roller, one end of the strut is provided with threads, the threaded end of the strut is screwed into the threaded hole of the large gasket of the retainer, and the welding end of the strut is connected into a whole through the through hole of the small gasket of the retainer by argon arc welding; two sets of single-row tapered roller bearings are arranged back to back on the main shaft of the wind turbine generator system in pairs, and the screw threads of the screw thread ends of the two sets of tapered roller bearings are oppositely arranged in the screw thread direction.
The thread rotation direction of the thread end of the single-row tapered roller bearing pillar on the hub side of the main shaft of the wind turbine generator is left-handed, and the thread rotation direction of the thread end of the single-row tapered roller bearing pillar on the generator side is right-handed; the screwing direction of the screw threads in the large washer screw holes of the retainer is respectively corresponding to the screwing directions of the screw thread ends of the two sets of single-row tapered roller bearing struts.
The retainer large gasket and the retainer small gasket are porous circular rings.
The pillar is smooth cylinder in surface, and the pillar screw thread end is step form, and the screw external diameter of pillar end is less than the diameter of pillar cylinder, has strengthened the location and the assembly accuracy of pillar to the holder.
The welding end of the support column is 2.2-3.0mm lower than the small gasket of the retainer, the chamfer angle of the small gasket through hole of the retainer is 45-50 degrees, and the chamfer angle height is 4-5.5mm. Argon arc welding is adopted, so that the welding contact area of the support column and the small gasket is increased, and the welding strength is increased; the argon arc welding is suitable for metal welding, the welding groove is small, the argon arc welding requirement is met, the welding materials are few, the welding speed is high, inert gas is protected in the welding process, welding slag is not splashed, the welded part is easy to clean after welding, the welding quality and the appearance are excellent, and the strength and the reliability of the welded part of the support column and the small gasket are improved.
The gap between the welding end of the support column and the small washer of the retainer is 0.21-0.23mm. The degree of freedom of the tapered roller between the retainer washers is guaranteed, interference between the support posts and the washers in the running process is prevented, the damage frequency of the support posts and the washers is reduced, and the service lives of the retainer and the bearing are prolonged.
The two ends of the central hole of the tapered roller are provided with circular cone angle structures with the angle of 1.5-2 degrees, and the length of each cone angle structure at each end accounts for 1/5 of the total length of the central hole; the friction force between the strut and the tapered roller is reduced. The linear contact between the cylindrical pillar and the hollow roller can be changed into approximate point contact, so that friction between the pillar and the hollow roller is greatly reduced, and the phenomenon of roller locking caused by the inclination of the center line of the roller and the center line of the pillar is prevented.
The side wall of the inner ring raceway is set to be a slightly convex curved surface, the difference between the lowest point and the highest point of the curved surface is controlled to be 0.8-1.8 mu m, the end face of the tapered roller is in contact with the side wall of the inner ring raceway of the bearing, the tapered roller is in point contact under no load, the tapered roller is in surface contact under the action of load, the edge stress concentration generated when the tapered roller is in contact with the side wall of the inner ring raceway of the bearing is eliminated, an oil film is easily formed, the lubrication effect of the end face of the tapered roller and the flange of the inner ring is improved, the tapered roller is not easy to wear and heat, and the service life of the bearing is prolonged.
The beneficial effects are that: according to the wind power single-row tapered roller main shaft bearing, the screw threads of the screw thread ends of the two sets of single-row tapered roller bearing retainer struts which are arranged back to back are oppositely arranged, and the screw threads of the two sets of bearing struts and the screw threads of the large gasket are oppositely arranged, so that the struts and the large gasket are always in a screw thread tight fit state in the running process of the bearing, the self-locking effect is achieved, the large gasket with screw threads is prevented from being separated from the struts, and the problems of deformation, open welding, frame scattering and the like of the struts and the retainer gasket due to impact are prevented; the side wall of the inner ring raceway is provided with a slightly convex curved surface and annular cone angle structures at two ends of a roller center hole, so that friction force between the tapered rollers and the support and between the tapered rollers and the inner ring raceway is reduced, higher reliability is achieved, and the operation reliability and the service life of the wind power single-row tapered roller main shaft bearing configured in pairs are improved.
Drawings
FIG. 1 is a schematic view of a single row tapered roller main shaft bearing according to the present invention;
FIG. 2 is a schematic view of the partial structure of the present invention A;
FIG. 3 is a schematic view of the partial structure of the present invention at B;
fig. 4 is a schematic diagram of an installation structure of two sets of single-row tapered roller bearings on a main shaft of a wind generating set.
Marking: 1. an inner ring; 2. an outer ring; 3. tapered rollers; 4. a retainer small washer; 5. a retainer large gasket; 6. a support post; 7. a post weld end; 8. a threaded hole; 9. a post threaded end; 10. a central bore; 11. a main shaft; 12. a main shaft hub side; 13. a single row tapered roller bearing; 14 bearing seats; 15. a bearing retainer ring; 16. a main shaft generator side.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
1-3, a high-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing comprises an inner ring 1, an outer ring 2, a retainer and tapered rollers 3, wherein a plurality of hollow tapered rollers 3 are arranged between the inner ring 1 and the outer ring 2, and retainer small washers 4 and retainer large washers 5 are arranged along the circumferential direction of two ends of the tapered rollers 3; the strut 6 passes through the central hole 10 of the tapered roller 3, one end of the strut 6 is provided with screw threads, the threaded end 9 of the strut is screwed into the threaded hole 8 of the large retainer washer 5, and the strut welding end 7 is connected into a whole through the through hole of the small retainer washer 4 by argon arc welding; two sets of single-row tapered roller bearings 13 are arranged on the main shaft 11 of the wind turbine generator in pairs back to back, and the screw threads of the screw thread ends 9 of the two sets of tapered roller bearings 13 are oppositely arranged.
The thread rotation direction of the pillar thread end 9 of the single-row tapered roller bearing 13 at the hub side 12 of the main shaft of the wind turbine generator is left-handed, and the thread rotation direction of the pillar thread end 9 of the single-row tapered roller bearing 13 at the side 16 of the main shaft generator is right-handed; the screwing direction of the internal thread of the threaded hole 8 of the retainer large washer 5 is respectively corresponding to the screwing direction of the thread ends 9 of the struts of the two sets of single-row tapered roller bearings 13.
The retainer small gasket 4 and the retainer large gasket 5 are porous circular rings.
The pillar 6 is a cylinder with smooth surface, the pillar thread end 9 is in a step shape, the thread outer diameter of the pillar thread end 9 is smaller than the diameter of the pillar 6 cylinder, and the positioning and assembling precision of the pillar 6 to the retainer is enhanced.
The height of the strut welding end 7 is 2.2-3.0mm lower than that of the small retainer washer 4, the chamfer angle of the through hole of the small retainer washer 4 is 45-50 degrees, and the chamfer angle height is 4-5.5mm. The argon arc welding is adopted, so that the welding contact area of the support column 6 and the retainer small gasket 4 is increased, inert gas is protected in the welding process, no welding slag splashes, the welded part is easy to clean after welding, the welding quality and the appearance are excellent, and the strength and the reliability of the welded part of the support column 6 and the retainer small gasket 4 are increased.
The clearance between the post welding end 7 and the retainer washer 4 is 0.21-0.23mm. The degree of freedom of the tapered roller 3 between the retainer washers is ensured, mutual interference is prevented, and the service lives of the retainer and the bearing are prolonged.
The two ends of the central hole 10 of the tapered roller 3 are provided with a circular cone angle structure of 1.5-2 degrees, and the length of the cone angle structure at each end accounts for 1/5 of the total length of the central hole; the friction force between the strut 6 and the tapered roller 3 is reduced, the linear contact between the cylindrical strut 6 and the hollow tapered roller 3 can be changed into approximate point contact, the friction between the strut 6 and the hollow tapered roller 3 is greatly reduced, and the phenomenon of locking of the tapered roller 3 caused by the inclination of the central line of the tapered roller 3 and the central line of the strut 6 is prevented.
The side wall of the inner ring 1 raceway is set to be a slightly convex curved surface, the difference between the lowest point and the highest point of the curved surface is controlled to be 0.8-1.8 mu m, the end face of the tapered roller 3 is in contact with the side wall of the bearing inner ring 1 raceway under the non-load state, the tapered roller 3 is in point contact with the side wall of the bearing inner ring 1 raceway under the load state, the edge stress concentration generated when the tapered roller 3 is in contact with the side wall of the bearing inner ring 1 raceway is eliminated, an oil film is easily formed, the lubrication effect of the end face of the tapered roller 3 and the flange of the inner ring 1 is improved, the abrasion and the heating are not easy, the working temperature of the bearing during running is reduced, and the service life of the bearing is prolonged.
The wind driven generator is used as a key part of the fan, and the quality and performance of the main bearing determine the reliability of the operation of the fan. The wind driven generator adopts a single-row tapered roller bearing pairing configuration scheme structure as shown in fig. 4, wherein the inner ring 1 of the single-row tapered roller bearing 13 is in interference fit with the main shaft, and the outer ring 2 is in interference fit with the bearing seat 14. The two sets of single-row tapered roller bearings 13 are arranged back to back, contact angle lines of the bearings are diffused along the direction of a rotation axis, the larger the bearing span is, the larger the bearing overturning moment is, the radial and axial supporting angle rigidity can be increased, the deformation resistance is maximum, the rigidity of a shafting is good, and the axial displacement is small. Since the bearing rotates clockwise when viewed from the hub side, the tapered roller 3 adjacent to the hub side rotates counterclockwise, and the direction of the frictional force generated with the strut 6 is counterclockwise, the strut 6 tends to move counterclockwise, and the closer the strut 6 rotates counterclockwise, the closer the tapered roller bearing holder strut 6 adjacent to the hub side is to the large washer 5 is in left-hand threaded connection; when the bearing is rotated counterclockwise as viewed from the generator side, the rollers are rotated clockwise, the direction of friction force generated with the strut 6 is clockwise, the strut 6 tends to move clockwise, and the retainer strut 6 adjacent to the generator side tapered roller bearing is screwed with the large washer 5 in a right-hand manner so that the tighter the clockwise rotation of the strut is.
The retainer support of the tapered roller bearing and the washer are conventionally designed to be in positive-rotation threaded connection, along with the running of the bearing, two sets of single-row tapered roller bearings 13 adopting a back-to-back arrangement mode have a loose effect due to the fact that the threads of the retainer support 6 of the hub side bearing and the large washer 5 are in opposite directions, the retainer support 6 of the generator side bearing and the large washer 5 are designed to be in left-rotation threaded connection, the retainer support 6 of the generator side bearing and the large washer 5 are designed to be in right-rotation threaded connection, the threads of the two sets of bearing support 6 and the large washer 5 are opposite in directions, so that the tapered roller autorotation enables the support 6 and the large washer 5 to be in a threaded tight fit state all the time in the running process of the bearing, the large washer 5 with threads is prevented from being separated from the support 6, the self-locking effect is achieved, and therefore the stability and the service life of the single-row tapered roller bearing 13 are improved.
Claims (8)
1. A high-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing is characterized in that: the device comprises an inner ring, an outer ring, a retainer and tapered rollers, wherein a plurality of hollow tapered rollers are arranged between the inner ring and the outer ring, and a retainer large washer and a retainer small washer are arranged along the circumferential direction of two ends of each tapered roller; the strut penetrates through the central hole of the tapered roller, one end of the strut is provided with threads, the threaded end of the strut is screwed into the threaded hole of the large gasket of the retainer, and the welding end of the strut is connected into a whole through the through hole of the small gasket of the retainer by argon arc welding; two sets of single-row tapered roller bearings are arranged back to back on the main shaft of the wind turbine generator system in pairs, and the screw threads of the screw thread ends of the two sets of tapered roller bearings are oppositely arranged in the screw thread direction.
2. The high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing according to claim 1, wherein: the thread rotation direction of the thread end of the single-row tapered roller bearing pillar on the hub side of the main shaft of the wind turbine generator is left-handed, and the thread rotation direction of the thread end of the single-row tapered roller bearing pillar on the generator side is right-handed; the screwing direction of the screw threads in the large washer screw holes of the retainer is respectively corresponding to the screwing directions of the screw thread ends of the two sets of single-row tapered roller bearing struts.
3. The high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing according to claim 1, wherein: the retainer large gasket and the retainer small gasket are porous circular rings.
4. The high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing according to claim 1, wherein: the pillar is a cylinder with smooth surface, the threaded end of the pillar is in a step shape, and the outer diameter of the thread of the end of the pillar is smaller than the diameter of the pillar cylinder.
5. The high-reliability welded type pillar retainer wind power single-row tapered roller main shaft bearing according to claim 1 or 4, wherein: the welding end of the support post is 2.2-3.0mm lower than the small gasket of the retainer, the chamfer angle of the small gasket through hole of the retainer is 45-50 degrees, and the chamfer angle height is 4-5.5mm.
6. The high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing according to claim 1, wherein: the gap between the welding end of the support column and the small washer of the retainer is 0.21-0.23mm.
7. The high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing according to claim 1, wherein: the two ends of the central hole of the tapered roller are provided with circular cone angle structures of 1.5-2 degrees, and the length of each cone angle structure occupies 1/5 of the total length of the central hole.
8. The high-reliability welded type strut retainer wind power single-row tapered roller main shaft bearing according to claim 1, wherein: the side wall of the inner ring raceway is set to be a slightly convex curved surface, and the difference between the lowest point and the highest point of the curved surface is controlled to be 0.8-1.8 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310695567.4A CN116792403A (en) | 2023-06-13 | 2023-06-13 | High-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310695567.4A CN116792403A (en) | 2023-06-13 | 2023-06-13 | High-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing |
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| CN116792403A true CN116792403A (en) | 2023-09-22 |
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| CN202310695567.4A Pending CN116792403A (en) | 2023-06-13 | 2023-06-13 | High-reliability welding type strut retainer wind power single-row tapered roller main shaft bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121571922A (en) * | 2026-01-29 | 2026-02-27 | 大连光扬轴承制造有限公司 | A bearing strut welded cage washer resistant to welding deformation |
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| CN113606237A (en) * | 2021-07-27 | 2021-11-05 | 燕山大学 | Slotted nut structure and nut anti-loosening method adopting screw jacking |
| CN215634402U (en) * | 2021-08-13 | 2022-01-25 | 洛阳轴承研究所有限公司 | Tapered roller bearing and main shaft system of wind driven generator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN121571922A (en) * | 2026-01-29 | 2026-02-27 | 大连光扬轴承制造有限公司 | A bearing strut welded cage washer resistant to welding deformation |
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