CN207715543U - A kind of split type pitch variable bearings of T shapes ditch right angle contact - Google Patents
A kind of split type pitch variable bearings of T shapes ditch right angle contact Download PDFInfo
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- CN207715543U CN207715543U CN201721818070.3U CN201721818070U CN207715543U CN 207715543 U CN207715543 U CN 207715543U CN 201721818070 U CN201721818070 U CN 201721818070U CN 207715543 U CN207715543 U CN 207715543U
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- inner ring
- ring
- pitch variable
- variable bearings
- outer ring
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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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- Rolling Contact Bearings (AREA)
Abstract
The utility model is related to a kind of pitch variable bearings, it is specifically related to a kind of split type pitch variable bearings of T shapes ditch right angle contact, including outer ring, first inner ring, second inner ring, two steel balls being set between outer ring and two inner rings, the inner surface is bulge-structure, inner ring outer surface be and the matched groove structure of outer ring bulge-structure, two steel balls are respectively in the both sides of outer ring bulge-structure, two steel balls are contacted with the groove two side walls of inner ring respectively, the outer ring, first inner ring, lasso raceway is formed between second inner ring, sealing ring is respectively set between outer ring and two inner rings；Suitable for wind power generator group complex working condition, make between raceway and steel ball that there is no gaps preferably to bear under the action of high-frequency vibration and generate shock loading between steel ball and raceway groove, optimizes raceway fatigue life, extend the service life of pitch variable bearings.
Description
Technical field
The utility model is related to a kind of pitch variable bearings, are specifically related to a kind of split type pitch variable bearings of T shapes ditch right angle contact,
The pitch variable bearings matched with super-large diameter wind turbine and high wheel hub being mainly used in wind power generating set.
Background technology
Paddle-changing bearing in wind generating set is as one of wind-driven generator special bearing, the quality of performance, longevity
Life length is related to the normal operation of wind-driven generator, generating efficiency etc..Since pitch variable bearings size is larger, structure and stress
Complexity, the difficulty for designing it production is also relatively large, and the wind power bearing performance and used life of general domestic production is all difficult
Reach design requirement.Using Germanischer Lloyds' wind power generating set authentication specifications and european norm as foundation, managed in conjunction with modern designs
Analysis method is referred to, correlative study analysis is carried out to the pitch variable bearings of super-large diameter wind turbine and high wheel hub, is pitch variable bearings
Design has theory significance and engineering use value with production.
Bearing of wind power generator, which has, at present greatly relies on external import, and state's outer bearing price is high, delivery cycle
It is long, restrict the development of domestic wind-driven generator complete machine enterprise.As the leading enterprise of state's inner bearing, it is duty-bound will be to super large
The research and development task of the pitch variable bearings of diameter wind turbine and high wheel hub.
The internal structure of wherein pitch variable bearings is that one in future developing trend needs emphasis to capture difficulty.
Invention content
In order to overcome pitch variable bearings applying working condition complicated, size is big, retainer rapid wear, and mounting means is vertical installation etc.
Problem, the utility model provide a kind of split type pitch variable bearings of T shapes ditch right angle contact, match and super-large diameter wind turbine and high wheel
Hub.
To achieve the goals above, technical solution used by the utility model is：A kind of T shapes ditch right angle contact is split type
Pitch variable bearings, including outer ring, the first inner ring, the second inner ring, two steel balls being set between outer ring and two inner rings, the outer ring
Inner surface is bulge-structure, and inner ring outer surface is to distinguish outside with the matched groove structure of outer ring bulge-structure, two steel balls
The both sides of bulge-structure are enclosed, two steel balls are contacted with the groove two side walls of inner ring respectively, the outer ring, the first inner ring, second
Lasso raceway is formed between inner ring, and sealing ring is respectively set between outer ring and two inner rings；
The sealing ring is lips type seal；
The outer ring, the first inner ring, the second inner ring are three sections of ring split structures；
The lasso raceway is T-shaped structure, and steel ball contact angle is 90 °；
Two rows of rollers are axially set in T shape raceways, and two rows of roller one sides are contacted with the bulge-structure end face of outer ring；
Bucking ladder structure is respectively set in first inner ring and the second inner ring, and the second inner ring lapping is arranged in the first inner ring
On bucking ladder end face；
The another side of two rows of rollers and the first inner ring bucking ladder deck contact；
Be equipped with gap between the second inner ring and roller upper surface close to second inner ring one end, on the inside of the first inner ring with it is another
The lower surface of one row's roller is in direct contact；
Spacing block is additionally provided between each two steel ball, the spacing block is loop configuration, and the spacing block diameter is less than
Steel ball size；
Bearing ring uses the structural alloy steel 42CrMo4V of external refining vacuum outgas, steel ball to use external refining vacuum
High-carbon-chromium bearing steel GCr15G, Cr15SiMn of degassing.
It is using advantageous effect caused by above-mentioned technical proposal：
1) lasso uses split structure, convenient for assembly rolling element, eliminates traditional ball-loading hole, eliminates dress ball
In the stress for bearing complicated alternating load generation.
2) lasso raceway is T-shaped structure mode, and steel ball contact angle is 90 °, eliminates traditional four-point contact ball pitch variable bearings
Steel ball bear the deformation of caused lasso, radial load when additional radial load and all undertaken by the rolling element of radial raceway, can
By establishing FEA model and finite element analysis computation adjustment rolling element size.
3) heart bears tilting moment to the axial roller of two rows in T shapes raceway within the bearing, eliminates traditional four-point contact ball
The edge stress load of pitch variable bearings.
4) T shapes raceway is suitable for wind power generator group complex working condition, makes that gap is not present between raceway and steel ball, in height
It under the action of frequency vibration, preferably bears and generates shock loading between steel ball and raceway groove, optimize raceway fatigue life, extend
The service life of pitch variable bearings.
5) this pitch variable bearings is suitable for the land low wind speed of 2MW to 10MW and Large marine wind turbine, occurs in wheel hub and blade root
Gross distortion also ensures that even running.
Description of the drawings
Fig. 1 is a kind of split type pitch variable bearings structural schematic diagram of T shapes raceway.
Fig. 2 is steel ball contact angle and raceway shape sectional view.
Fig. 3 is rolling element stress view.
In figure, 01. outer ring, 02. first inner ring, 22 second inner ring, 04. steel ball, 24. rollers, 06. spacing block, 58. sealings
Circle, 03.T shape raceways.
Specific implementation mode
The utility model is described in detail below in conjunction with the accompanying drawings.
As shown in Figs. 1-3, the split type pitch variable bearings of a kind of T shapes ditch right angle contact, including outer ring 01, the first inner ring 02,
Two inner rings 22, two steel balls 04 being set between outer ring 01 and two inner rings, 01 inner surface of the outer ring are bulge-structure, inner ring
Outer surface be with the matched groove structure of outer ring bulge-structure, two steel balls are respectively in the both sides of outer ring bulge-structure, two
Steel ball is contacted with the groove two side walls of inner ring respectively, and lasso is formed between the outer ring 01, the first inner ring 02, the second inner ring 22
Sealing ring 58 is respectively set in raceway between outer ring 01 and two inner rings；
The sealing ring 58 is lips type seal；
The outer ring 01, the first inner ring 02, the second inner ring 22 are three sections of ring split structures；
The lasso raceway is T-shaped structure, and steel ball contact angle is 90 °；
Two rows of rollers 24 are axially set in T shape raceways, and 24 one side of two rows of rollers and the bulge-structure end face of outer ring 01 connect
It touches；
Bucking ladder structure is respectively set in first inner ring, 02 and second inner ring 22, and 22 lapping of the second inner ring is arranged first
On the bucking ladder end face of inner ring 02；
The another side of two rows of rollers 24 and 02 bucking ladder deck contact of the first inner ring；
It is equipped with gap between the second inner ring 22 and 24 upper surface of roller close to second inner ring one end, in the first inner ring 02
Side and the lower surface of another row's roller 24 are in direct contact；
Spacing block 06 is additionally provided between each two steel ball 04, the spacing block 06 is loop configuration, the spacing block 06
Diameter is less than steel ball size.
The split type pitch variable bearings with super-large diameter wind turbine and high wheel hub of T shape ditch right angle contacts, by establishing FEA moulds
After type and finite element analysis computation verification, not only meets intensity requirement well, be unlikely to deform, the problems such as precision is high, thrown
Enter production with the pitch-controlled system with super-large diameter wind turbine and high wheel hub.
Claims (8)
1. a kind of split type pitch variable bearings of T shapes ditch right angle contact, it is characterised in that including outer ring, the first inner ring, the second inner ring, if
Two steel balls being placed between outer ring and two inner rings, the inner surface are bulge-structure, and inner ring outer surface is convex with outer ring
Play the matched groove structure of structure, two steel balls respectively in the both sides of outer ring bulge-structure, two steel balls respectively with inner ring
Groove two side walls contact, and lasso raceway is formed between the outer ring, the first inner ring, the second inner ring, outer ring and two inner rings it
Between sealing ring is respectively set.
2. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 1, it is characterised in that the outer ring,
First inner ring, the second inner ring are three sections of ring split structures.
3. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 1, it is characterised in that the lasso
Raceway is T-shaped structure, and steel ball contact angle is 90 °.
4. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 1, it is characterised in that in T shape raceways
The axial two rows of rollers of setting, two rows of roller one sides are contacted with the bulge-structure end face of outer ring.
5. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 4, it is characterised in that in described first
Bucking ladder structure is respectively set in circle and the second inner ring, and the second inner ring lapping is arranged on the bucking ladder end face of the first inner ring.
6. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 5, it is characterised in that two rows of rollers
Another side and the first inner ring bucking ladder deck contact.
7. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 4, it is characterised in that in the second inner ring
Gap is equipped between the roller upper surface of close second inner ring one end, the first inner ring inside is straight with the lower surface of another row's roller
Contact.
8. a kind of split type pitch variable bearings of T shapes ditch right angle contact according to claim 1, it is characterised in that in each two steel
Spacing block is additionally provided between ball, the spacing block is loop configuration, and the spacing block diameter is less than steel ball size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721818070.3U CN207715543U (en) | 2017-12-22 | 2017-12-22 | A kind of split type pitch variable bearings of T shapes ditch right angle contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721818070.3U CN207715543U (en) | 2017-12-22 | 2017-12-22 | A kind of split type pitch variable bearings of T shapes ditch right angle contact |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715543U true CN207715543U (en) | 2018-08-10 |
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ID=63057124
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721818070.3U Active CN207715543U (en) | 2017-12-22 | 2017-12-22 | A kind of split type pitch variable bearings of T shapes ditch right angle contact |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207715543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105256A (en) * | 2017-12-22 | 2018-06-01 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | The split type pitch variable bearings of T-shaped ditch right angle contact |
-
2017
- 2017-12-22 CN CN201721818070.3U patent/CN207715543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105256A (en) * | 2017-12-22 | 2018-06-01 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | The split type pitch variable bearings of T-shaped ditch right angle contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210107 Address after: 116300 Zhuhua Industrial Park, Wafangdian City, Dalian City, Liaoning Province Patentee after: Wafangdian City bearing group wind power Bearing Co.,Ltd. Address before: 116300 Bearing Industrial Park, Wafangdian City, Liaoning Province Patentee before: WAFANGDIAN BEARING GROUP NATIONAL BEARING ENGINEERING TECHNOLOGY RESEARCH CENTER Co.,Ltd. Patentee before: WAFANGDIAN BEARING GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |