CN102748382B - Roller bearing for supporting main shaft of wind driven generator - Google Patents
Roller bearing for supporting main shaft of wind driven generator Download PDFInfo
- Publication number
- CN102748382B CN102748382B CN201210215442.9A CN201210215442A CN102748382B CN 102748382 B CN102748382 B CN 102748382B CN 201210215442 A CN201210215442 A CN 201210215442A CN 102748382 B CN102748382 B CN 102748382B
- Authority
- CN
- China
- Prior art keywords
- tapered roller
- groove
- roller bearing
- outer ring
- inner ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Wind Motors (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a roller bearing for supporting a main shaft of a wind driven generator. The roller bearing for supporting a main shaft of a wind driven generator is prepared from a high-strength alloy steel material, has a single-row tapered roller bearing structure, and comprises an outer ring, an inner ring, a tapered roller, an upper groove which is used for receiving the tapered roller and is located at the outer ring, a lower groove which is used for receiving the tapered roller and is located at the inner ring, a keeper which is used for keeping the tapered roller, an upper lubricant groove which is located at the outer ring and provides lubricant to the tapered roller, and a lower lubricant groove which is located at the inner ring and provides lubricant to the tapered roller, wherein four corners of the tapered roller have arc shapes; the upper groove which is used for receiving the tapered roller and is located at the outer ring and the lower groove which is used for receiving the tapered roller and is located at the inner ring compose a tapered roller receiving groove; and four corners of the tapered roller receiving groove have arc shapes.
Description
Technical field
Technical field of wind power generator of the present invention, particularly relates to a kind of wind driven generator principal shaft support roller bearing.
Background technique
Society, along with the problems such as global energy shortage and environmental pollution are increasingly serious, searching renewable energy sources has become the key subjects that countries in the world face.And nature wind energy is compared with other energy, not only reserves are large, widely distributed, never exhausted, but also it is short, stronger than the basic less investment of the construction of hydropower stations, flexibility to have upper detective, construction period, and can effectively contain greenhouse effect and Sandstorm Disaster, the features such as environmental protection, therefore wind-power electricity generation becomes the emphasis of research day by day.
As the device for transmission, wind driven generator principal shaft is the important composition parts of wind-driven generator, and the roller bearing supporting this wind driven generator principal shaft is then the core ensureing the work of wind driven generator principal shaft stability and safety.At present, tapered roller two ends for the tapered roller bearing of wind driven generator principal shaft have very large-area stressed concentrated very much, such tapered roller is easy to heating, with Internal and external cycle be under pressure time generate heat and roll, tapered roller is easy to bonding burn, produce and destroy, reduce the working life of bearing.In order to improve the working life of tapered roller bearing, generally all need to start with from Design and manufacture material two aspect, but be that design bearing or bearing material all also exist deficiency at present.
Such as, Fig. 3 is the structure of existing tapered roller bearing.In this tapered roller structure, it directly adopts or the 45 ° chamferings crossing with conical surface of arc surface on large end, bearing is caused to there are some shortcomings in actual use: because thrust load is close to load rating, the position, right angle at tapered roller two ends produces other positions are larger relatively stress and plastic deformation, friction torque significantly increases, and is unfavorable for real work.Because its shape of tapered roller has larger tapering to be 9 °, when being subject to axial force, the tendency that the oriented large end of whole tapered roller slides, produces friction torque, and large end face produces friction torque and increases additional thrust load to the position, right angle of large end face.Because cone angle is comparatively large, the ess-strain that the small end of tapered roller is subject to is comparatively large, easily destroys.
Meanwhile, because current domestic steel product quality is not good enough, the reasons such as processing technology is backward, cause the working life of made tapered roller bearing not high, need often to change, which results in the cost increase of wind power plant.
Summary of the invention
For the shortcoming of prior art, the present invention proposes a kind of wind-power electricity generation main shaft support roller bearing, by adopting the steel of new proportioning, and adopt novel structure, thus overcome the above-mentioned deficiency of prior art.The roller bearing that the present invention proposes, first, structurally carrys out transition by the right angle portions arc surface of tapered roller both ends of the surface.Bearing enclose also forms karyomorphism raceway groove with corresponding circular arc to the position of roller contact, thus can increase wrapping angle and contact area, improves axial carrying capacity; And it is obviously concentrated to effectively prevent existing roller bearing stress, the problem that heating value is larger.Secondly, on material, the roller bearing that the present invention proposes adopts the steel of new proportioning, and these steel can improve the tolerance of roller bearing, extend its operating life.
Wind driven generator principal shaft support roller bearing of the present invention, it adopts high strength alloy steel to make, the chemical composition proportioning of these high strength alloy steel is: carbon: 0.25 ~ 0.60wt%, silicon: 0.35 ~ 0.50wt%, manganese: 1.2 ~ 1.70wt%, phosphorus: 0.015 ~ 0.025wt%, sulphur: 0.012 ~ 0.02wt%, chromium: 0.30 ~ 0.80wt%, molybdenum: 0.10 ~ 0.30, vanadium: 0.15 ~ 0.30wt%, nickel: 0.30 ~ 0.50wt%, copper: 0.15 ~ 0.3wt%, nitrogen: 0.015 ~ 0.05wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, surplus is iron,
Described wind driven generator principal shaft support roller bearing is single-row tapered roller bearing, and it comprises: the low groove being positioned at inner ring of the upper groove being positioned at outer ring of outer ring, inner ring, tapered roller, collecting tapered roller, collecting tapered roller, keep the retainer of tapered roller and provide the finishing bathtray being positioned at outer ring of lubricant oil for tapered roller and be positioned at the lower oil groove of inner ring; Wherein, the corner of tapered roller is circular arc, and the upper groove being positioned at outer ring of described collecting tapered roller and the low groove being positioned at inner ring are combined into the accommodating grooves of collecting tapered roller, the corner of this accommodating grooves is circular arc, and the radius of curvature of the corner of described accommodating grooves is identical with the radius of curvature of described tapered roller corner;
Wherein, the surface roughness of tapered roller, upper groove and low groove all should be not more than 0.08 μm, is preferably 0.06 μm.
Wherein, described outer ring also has finishing bathtray, and described inner ring also has lower oil groove, and described finishing bathtray and lower oil groove store lubricant oil respectively, thus provides lubrication in the course of the work for tapered roller.
Accompanying drawing explanation
Fig. 1 is the structural representation of the roller bearing of the embodiment of the present invention;
Fig. 2 is the enlarged diagram of tapered roller structure in Fig. 1;
Fig. 3 is the structural representation of roller bearing in prior art.
Embodiment
In order to technological scheme of the present invention is clearly described, below by describing embodiments of the invention by reference to the accompanying drawings.
Embodiment
Wind driven generator principal shaft support roller bearing of the present invention adopts high strength alloy steel to make as raw material, wherein the chemical composition proportioning of these high strength alloy steel is, carbon: 0.25 ~ 0.60wt%, silicon: 0.35 ~ 0.50wt%, manganese: 1.2 ~ 1.70wt%, phosphorus: 0.015 ~ 0.025wt%, sulphur: 0.012 ~ 0.02wt%, chromium: 0.30 ~ 0.80wt%, molybdenum: 0.10 ~ 0.30, vanadium: 0.15 ~ 0.30wt%, nickel: 0.30 ~ 0.50wt%, copper: 0.15 ~ 0.3wt%, nitrogen: 0.015 ~ 0.05wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, surplus is iron,
It is single-row structure that wind driven generator principal shaft of the present invention is made by the structure of roller bearing, and as shown in Figure 1, roller bearing comprises outer ring 101, inner ring 102, tapered roller 103 and keeps the retainer 110 of tapered roller; As previously mentioned, tapered roller bearing adopts high strength alloy steel to make, and also just says it is in the present invention, comprise outer ring 101, inner ring 102, tapered roller 103 and retainer 110 and all adopt previously described high strength alloy steel to make.
Refer to Fig. 2 below, this Fig. 2 is the enlarged diagram of tapered roller bearing structure in Fig. 1.As seen from Figure 2, in the roller structure of wind driven generator principal shaft roller bearing of the present invention, outer ring 101 has upper groove, and inner ring 102 has low groove, after this outer ring 101 and inner ring 102 are combined, upper groove and low groove form the accommodating grooves of collecting tapered roller 103 jointly.
Due in prior art, the position, right angle at tapered roller two ends produces other positions are larger relatively stress and plastic deformation, friction torque significantly increases, and when being subject to axial force, the tendency that the oriented large end of whole tapered roller slides, produce friction torque, large end face produces friction torque and increases additional thrust load to the position, right angle of large end face; Therefore, in order to overcome above-mentioned defect, the corner of tapered roller 103 is designed to circular arc (referring to Fig. 2) by the present invention, and in order to match with the tapered roller of this circular arc, the corner of described accommodating grooves is designed to circular arc equally, namely the circular arc 105,106,107 and 108 in Fig. 2, and the circular arc 105,106,107 of accommodating grooves is identical with the radius of curvature of corresponding tapered roller foursquare arc with the radius of curvature of 108; By adopting above-mentioned design, the position that bearing outer ring 101, inner ring 102 contact with tapered roller 103 is owing to adopting corresponding circular arc to form karyomorphism raceway groove, and therefore it can increase wrapping angle, increases contact area, improves axial carrying capacity; Avoid the stress at tapered roller bearing structure two ends in prior art to concentrate obviously, the defect that heating value is large, from the working life can improving tapered roller bearing.
Simultaneously, reduce friction in actual use in order to tapered roller bearing can be made as far as possible, thus reduce operational heat amount to improve the working life of bearing, tapered roller 103 and the outer ring 101 that contacts with tapered roller 103 in wind driven generator principal shaft support roller bearing of the present invention, inner ring 102 also have passed through careful polishing especially, namely, by the surface of tapered roller 103, polish meticulously in the surface of the low groove that the surface of the upper groove that outer ring 101 contacts with this tapered roller 103 and inner ring 102 contact with this tapered roller 103, make it smooth as much as possible.In the present invention, the surface roughness of tapered roller 103, upper groove and low groove all should be not more than 0.08 μm, is preferably 0.06 μm.
In addition, the present invention is also special is provided with finishing bathtray 104 on outer ring 101, and inner ring 102 is provided with lower oil groove 105, by being stored in by lubricant oil in finishing bathtray 104 and lower oil groove 105, thus make tapered roller bearing obtain the lubrication of lubricant oil at work at any time, thus reduce frictional force.
Although described specific embodiments more of the present invention; but it is not intended to limit the present invention; protection scope of the present invention is limited to the appended claims; and those skilled in the art are not when departing from claims protection domain, various amendment can be made to the present invention.
Claims (2)
1. a wind driven generator principal shaft support roller bearing, is characterized in that, described wind driven generator principal shaft support roller bearing adopts high strength alloy steel to make; This roller bearing is single-row tapered roller bearing structure, comprising:
The low groove being positioned at inner ring of the upper groove being positioned at outer ring of outer ring, inner ring, tapered roller, collecting tapered roller, collecting tapered roller, keep the retainer of tapered roller and provide the finishing bathtray being positioned at outer ring of lubricant oil for tapered roller and be positioned at the lower oil groove of inner ring; Wherein, the corner of tapered roller is circular arc, and the upper groove being positioned at outer ring of described collecting tapered roller and the low groove that is positioned at inner ring are combined into the accommodating grooves of collecting tapered roller, and the corner of this accommodating grooves is circular arc;
Wherein, the chemical composition proportioning of described high strength alloy steel is: carbon: 0.25 ~ 0.60wt%, silicon: 0.35 ~ 0.50wt%, manganese: 1.70wt%, phosphorus: 0.025wt%, sulphur: 0.02wt%, chromium: 0.30wt%, molybdenum: 0.10wt%, vanadium: 0.15 ~ 0.30wt%, nickel: 0.30 ~ 0.50wt%, copper: 0.3wt%, nitrogen: 0.015wt%, titanium :≤0.2wt%, niobium :≤0.06wt%, and surplus is iron;
The surface roughness of described tapered roller, upper groove and low groove is all not more than 0.06 μm;
Described outer ring also has finishing bathtray, and described inner ring also has lower oil groove, and described finishing bathtray and lower oil groove store lubricant oil respectively, thus provides lubrication in the course of the work for tapered roller.
2. wind driven generator principal shaft support roller bearing as claimed in claim 1, is characterized in that:
The corner of described accommodating grooves is circular arc, and the radius of curvature of the corner of described accommodating grooves is identical with the radius of curvature of corresponding described tapered roller corner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215442.9A CN102748382B (en) | 2012-06-28 | 2012-06-28 | Roller bearing for supporting main shaft of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215442.9A CN102748382B (en) | 2012-06-28 | 2012-06-28 | Roller bearing for supporting main shaft of wind driven generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102748382A CN102748382A (en) | 2012-10-24 |
| CN102748382B true CN102748382B (en) | 2015-03-11 |
Family
ID=47028797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210215442.9A Active CN102748382B (en) | 2012-06-28 | 2012-06-28 | Roller bearing for supporting main shaft of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748382B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105950934A (en) * | 2016-05-30 | 2016-09-21 | 安徽国成顺风风力发电有限公司 | Alloy material for wind driven generator and preparing method for alloy material |
| CN108048737A (en) * | 2017-11-28 | 2018-05-18 | 兰州兰石集团有限公司 | Main load-bearing part steel of drilling lifting means and preparation method thereof |
| CN110848264B (en) * | 2019-11-18 | 2021-04-06 | 苏州圣典企业管理咨询有限公司 | Preparation method of bearing retainer for robot with cooling and wear-resisting structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201068927Y (en) * | 2007-08-06 | 2008-06-04 | 黄石轴承厂 | Ultra- light roller bearing |
| CN202100606U (en) * | 2011-06-14 | 2012-01-04 | 常州市武进永达机械轴承有限公司 | Single-row tapered roller bearing |
| CN102433503A (en) * | 2011-12-16 | 2012-05-02 | 江阴同庆机械制造有限公司 | Wind power flange alloy steel and preparation technology of parts thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006300265A (en) * | 2005-04-22 | 2006-11-02 | Ntn Corp | Roller bearing and roller |
| JP2007051700A (en) * | 2005-08-18 | 2007-03-01 | Jtekt Corp | Tapered roller bearing, tapered roller bearing device, and pinion shaft supporting device for vehicle using the same |
-
2012
- 2012-06-28 CN CN201210215442.9A patent/CN102748382B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201068927Y (en) * | 2007-08-06 | 2008-06-04 | 黄石轴承厂 | Ultra- light roller bearing |
| CN202100606U (en) * | 2011-06-14 | 2012-01-04 | 常州市武进永达机械轴承有限公司 | Single-row tapered roller bearing |
| CN102433503A (en) * | 2011-12-16 | 2012-05-02 | 江阴同庆机械制造有限公司 | Wind power flange alloy steel and preparation technology of parts thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102748382A (en) | 2012-10-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102717237B (en) | Method for forming wind power flange | |
| CN102728756B (en) | Wind power spindle flange upsetting process | |
| CN102748382B (en) | Roller bearing for supporting main shaft of wind driven generator | |
| CN102974975B (en) | Manufacture the method for wind power flange | |
| CN202012570U (en) | Oil film bearing of main shaft of wind driven generator | |
| CN201934514U (en) | Hollow roller bearing | |
| CN204025581U (en) | Straight-line ball guide pin bushing | |
| CN202674011U (en) | Double-row roll ball type slewing bearing | |
| Kovalev et al. | Flywheel energy storage systems for autonomous energy systems with renewable energy sources | |
| CN101929505B (en) | Spherical surface double-slide static-dynamic pressure spindle film bearing for wind driven generator | |
| CN201411235Y (en) | Heavy-load type linear guide rail | |
| CN204082896U (en) | A kind of high-mechanic noise free gear-bearing | |
| CN202628803U (en) | Rolling bearing capable of saving electricity for ball mill | |
| CN210484409U (en) | Cylindrical roller bearing of wind power speed increasing box | |
| CN202659718U (en) | High-precision combination bearing | |
| CN206234260U (en) | A kind of wind-power electricity generation bearing | |
| CN201991933U (en) | Circular knitting machine spindle bearing | |
| CN201644192U (en) | Bearing fixing device of rolling bearing mill | |
| CN203009567U (en) | Single-raw angular contact ball bearing | |
| CN103104609A (en) | Novel structure retainer of conical bearing with low rotation torque | |
| CN203023278U (en) | Excavator travel gearbox bearing | |
| CN202493578U (en) | Single-row full-complement full-locating sealing cylindrical roller bearing | |
| CN214021152U (en) | Ball mill with kinetic energy recovery function | |
| CN203463489U (en) | Novel single-row angular contact ball bearing | |
| CN203146591U (en) | Novel structure retainer for low-rotation-torque conical bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 213300 No. 8, Zhongguancun Avenue, Liyang, Jiangsu Patentee after: Jiangsu Jinyuan High-end Equipment Co., Ltd. Address before: 213376 No. 1008 Ling Ling West Road, Jiangsu, Liyang Patentee before: Jiangsu Jinyuan Forging Co., Ltd. |