CN108374835A - Wind-powered electricity generation three-row cylinder roller pitch variable bearings - Google Patents
Wind-powered electricity generation three-row cylinder roller pitch variable bearings Download PDFInfo
- Publication number
- CN108374835A CN108374835A CN201810380298.1A CN201810380298A CN108374835A CN 108374835 A CN108374835 A CN 108374835A CN 201810380298 A CN201810380298 A CN 201810380298A CN 108374835 A CN108374835 A CN 108374835A
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- Prior art keywords
- annular groove
- raceway
- radial
- convex platform
- annular
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- 230000005611 electricity Effects 0.000 title claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011295 pitch Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- F16C19/50—Other types of ball or roller bearings
- F16C19/505—Other types of ball or roller bearings with the diameter of the rolling elements of one row differing from the diameter of those of another row
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings, including inner ring, outer ring, one row bears the radial cylindrical roller of radial load and the double axial cylindrical roller for bearing axial load, the outer circumference surface of the inner ring is equipped with first annular groove, the inner peripheral surface of the outer ring is equipped with annular convex platform, the annular convex platform is located in the first annular groove, gap between the two side and first annular groove two lateral walls of annular convex platform forms axial raceway, the double axial cylindrical roller is respectively arranged in the axial raceway, the outer wall of the annular convex platform is equipped with second annular groove, radial raceway is formed between the second annular groove and the inner wall of first annular groove, the radial direction cylindrical roller is set in the radial direction raceway.The bearing not only has the advantages that traditional three-row cylinder roller bearing load carrying capacity is strong, and service life is long, and it reduces the radial diameter of bearing simultaneously, reduces the overall design manufacturing cost of wind power generating set.
Description
Technical field
The present invention relates to technical field of bearings, especially a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings.
Background technology
Traditional wind generating set pitch control bearing mainly uses double four-point contact ball, as shown in Figure 1, outer ring 1
It is point contact between the raceway formed of inner ring 2 and rolling element 3, but wind power technology continued to develop in recent years, wind-driven generator
Group has evolved to big MW class, and variable blade control system develops to independent control variable pitch by centralized and unified variable pitch, therefore, this
Class bearing is had the disadvantages that in wind power generating set：Relative to the three-row cylinder roller bearing of comparable size, carrying is low,
Service life is low；Compared under big load, the contact area between rolling element and raceway is easy to exceed raceway effective coverage, leads to edge pressure
It bursts；It is isolated using steel retainer between rolling element, operational process easily causes retainer deformation and abrasion；Big MW class pitch variable bearings
Outer diameter can reach 6 meters, and manufacture and transport difficulty are big, of high cost.
And traditional three-row cylinder roller bearing, as shown in Fig. 2, it is mainly used in excavator and crane at present, outside
Using the structure type of 4 and one row's radial direction raceway 5 of double axial raceway, axial cylindrical roller 6 and axial direction between circle 1 and inner ring 2
Contact between raceway 4 and radial cylindrical roller 7 and radial raceway 5 is linear contact, this class bearing has the following advantages：It is high
Bearing capacity and long life；Radial load and axial force are respectively subjected to by two rows of rollers, and counter-force direction is made to be born with bearing
The main force direction of load is consistent, therefore can reduce the contact load of ball and raceway；In the case where bearing same load, relative to double
Arrange four-point contact ball, bearing shape is small, it is light-weight, save material and reduce Master Cost.And wind power generating set is to becoming
Paddle shaft hold radial space require high, traditional three-row cylinder roller bearing due in its structure radial space it is excessive and be difficult to reach
It is required that.
Invention content
To solve problems of the prior art, the object of the present invention is to provide a kind of wind-powered electricity generation three-row cylinder roller variable pitches
Bearing, which not only has the advantages that traditional three-row cylinder roller bearing load carrying capacity is strong, and service life is long, and it is simultaneously
The radial diameter for reducing bearing reduces the overall design manufacturing cost of wind power generating set.
To achieve the above object, the technical solution adopted by the present invention is：A kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings, packet
Include inner ring, outer ring, a row bear the radial cylindrical roller of radial load and the double axial cylindrical roller for bearing axial load, institute
The outer circumference surface for stating inner ring is equipped with first annular groove, and the inner peripheral surface of the outer ring is equipped with annular convex platform, the annular
Boss is located in the first annular groove, the gap between the two side and first annular groove two lateral walls of annular convex platform
Axial raceway is formed, the double axial cylindrical roller is respectively arranged in the axial raceway, and the outer wall of the annular convex platform is set
There is second annular groove, forms radial raceway, the radial circle between the second annular groove and the inner wall of first annular groove
Column roller is set in the radial direction raceway.
Preferably, the second annular groove is set to the middle part of the annular convex platform outer wall.
As an alternative solution, the inner peripheral surface of the outer ring is equipped with first annular groove, the outer circumference surface of the inner ring
Be equipped with annular convex platform, the annular convex platform is located in the first annular groove, the two side of annular convex platform with it is first annular
Gap between groove two lateral walls forms axial raceway, and the double axial cylindrical roller is respectively arranged on the axial raceway
Interior, the outer wall of the annular convex platform is equipped with second annular groove, between the second annular groove and the inner wall of first annular groove
Radial raceway is formed, the radial direction cylindrical roller is set in the radial direction raceway.
The beneficial effects of the invention are as follows：
It is that line connects between axial cylindrical roller and axial raceway and radial cylindrical roller and radial raceway in the present invention
Tactile mode, to which it remains the advantages that traditional three-row cylinder roller bearing load carrying capacity is strong, and service life is long, Er Qiejing
It is that second annular groove is arranged by the outer wall in annular convex platform to raceway, coordinates the inner wall of first annular groove and formed,
To make the radial direction raceway be in concave structure, relative to traditional three-row cylinder roller, this structure substantially reduces its diameter
To diameter, internal structure is compacter, and the bearing is made to meet requirement of the wind power generating set to pitch variable bearings radial space, will
It is widely used in the big MW class unit of wind-power electricity generation.
Description of the drawings
Fig. 1 is the structural schematic diagram of the double four-point contact ball of tradition；
Fig. 2 is the structural schematic diagram of traditional three-row cylinder roller bearing；
Fig. 3 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 4 is the structural schematic diagram of the embodiment of the present invention two；
Reference numeral：
1, outer ring, 2, inner ring, 3, rolling element, 4, axial raceway, 5, radial raceway, 6, axial cylindrical roller, 7, radial circle
Column roller, 8, first annular groove, 9, annular convex platform, 10, second annular groove.
Specific implementation mode
The embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Embodiment one
As shown in figure 3, a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings, including inner ring 2, outer ring 1, a row bear radial load
The radial cylindrical roller 7 of lotus and the double axial cylindrical roller 6 for bearing axial load, the outer circumference surface of the inner ring 2 are equipped with
The inner peripheral surface of first annular groove 8, the outer ring 1 is equipped with annular convex platform 9, and the annular convex platform 9 is located at first ring
In connected in star 8, the gap between 8 two lateral walls of two side and first annular groove of annular convex platform 9 forms axial raceway 4,
The double axial cylindrical roller 6 is respectively arranged in the axial raceway 4, and the outer wall of the annular convex platform 9 is equipped with the second annular
Groove 10 forms radial raceway 5, the radial direction cylinder rolling between the second annular groove 10 and the inner wall of first annular groove 8
Son 7 is set in the radial direction raceway 5.
In the present embodiment, between axial cylindrical roller 6 and axial raceway 4 and radial cylindrical roller 7 and radial raceway 5
It is the mode of line contact, to which it is remained, traditional three-row cylinder roller bearing load carrying capacity is strong, and service life length etc. is excellent
Point, and radial raceway 5 is that second annular groove 10 is arranged by the outer wall in annular convex platform 9, coordinates first annular groove 8
Inner wall and formed, to make the radial direction raceway 5 be in concave structure, relative to traditional three-row cylinder roller bearing, this
Structure substantially reduces its radial diameter, and internal structure is compacter, and the bearing is made to meet wind power generating set to pitch axis
The requirement for holding radial space will be widely used in the big MW class unit of wind-power electricity generation.The present embodiment in the specific implementation, in order to just
In assembling, two smaller inner rings of small width 2 may be used, outer rings 1 or the smaller outer ring 1 of two width is coordinated to coordinate inner ring
2, specifically, the smaller inner ring 2 of two width is either connected between the smaller outer ring 1 of two width by bolt or axis pin
It connects.
Further, the second annular groove 10 is set to the middle part of 9 outer wall of the annular convex platform.By second annular groove
10 are set to the middle part of annular convex platform 9, keep the stress of 10 liang of madial walls of second annular groove symmetrical, to which the knot of the bearing can be improved
Structure stability.
Embodiment two
As shown in figure 4, the inner peripheral surface of the outer ring 1 is equipped with first annular groove 8, the outer circumference surface of the inner ring 2
It is equipped with annular convex platform 9, the annular convex platform 9 is located in the first annular groove 8, the two side of annular convex platform 9 and first
Gap between 8 two lateral walls of annular groove forms axial raceway 4, and the double axial cylindrical roller 6 is respectively arranged on described
In axial raceway 4, the outer wall of the annular convex platform 9 is equipped with second annular groove 10, the second annular groove 10 and first annular
Radial raceway 5 is formed between the inner wall of groove 8, the radial direction cylindrical roller 7 is set in the radial direction raceway 5.
The present embodiment is a kind of alternative of embodiment one, difference from the first embodiment is that by first annular recessed
Slot is arranged on the inner peripheral surface of outer ring, and annular convex platform is set on the outer circumference surface of inner ring, can also reach embodiment one
It can achieve the effect that.
Specific implementation mode of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.
Claims (3)
1. a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings, including inner ring, outer ring, a row bear the radial cylinder rolling of radial load
The sub and double axial cylindrical roller for bearing axial load, which is characterized in that the outer circumference surface of the inner ring is equipped with the first ring
The inner peripheral surface of connected in star, the outer ring is equipped with annular convex platform, and the annular convex platform is located in the first annular groove, ring
Gap between the two side and first annular groove two lateral walls of shape boss forms axial raceway, the double axial cylindrical
Roller is respectively arranged in the axial raceway, and the outer wall of the annular convex platform is equipped with second annular groove, the second annular groove
Radial raceway is formed between the inner wall of first annular groove, the radial direction cylindrical roller is set in the radial direction raceway.
2. wind-powered electricity generation three-row cylinder roller pitch variable bearings according to claim 1, which is characterized in that the second annular groove
Set on the middle part of the annular convex platform outer wall.
3. wind-powered electricity generation three-row cylinder roller pitch variable bearings according to claim 1, which is characterized in that as an alternative solution, institute
The inner peripheral surface for stating outer ring is equipped with first annular groove, and the outer circumference surface of the inner ring is equipped with annular convex platform, the annular
Boss is located in the first annular groove, the gap between the two side and first annular groove two lateral walls of annular convex platform
Axial raceway is formed, the double axial cylindrical roller is respectively arranged in the axial raceway, and the outer wall of the annular convex platform is set
There is second annular groove, forms radial raceway, the radial circle between the second annular groove and the inner wall of first annular groove
Column roller is set in the radial direction raceway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810380298.1A CN108374835A (en) | 2018-04-25 | 2018-04-25 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810380298.1A CN108374835A (en) | 2018-04-25 | 2018-04-25 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108374835A true CN108374835A (en) | 2018-08-07 |
Family
ID=63032901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810380298.1A Pending CN108374835A (en) | 2018-04-25 | 2018-04-25 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
Country Status (1)
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| CN (1) | CN108374835A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253162A (en) * | 2018-11-30 | 2019-01-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Inserted three-row roller turntable bearing |
| CN109737006A (en) * | 2018-12-29 | 2019-05-10 | 北京金风科创风电设备有限公司 | Bearing, and pitch control device and method of wind generating set |
| CN110345154A (en) * | 2019-07-15 | 2019-10-18 | 北京金风科创风电设备有限公司 | Become oar sliding bearing, wind generating set's oar system and wind generating set become |
| CN111322197A (en) * | 2018-12-17 | 2020-06-23 | 新疆金风科技股份有限公司 | Wind turbines and pitch bearing assemblies |
| CN112555275A (en) * | 2019-09-26 | 2021-03-26 | 北京金风科创风电设备有限公司 | Bearing and wind generating set |
| CN114526284A (en) * | 2022-01-26 | 2022-05-24 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Pitch bearing |
| CN115492852A (en) * | 2022-09-27 | 2022-12-20 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Slewing support bearing |
| CN117553071A (en) * | 2023-12-26 | 2024-02-13 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Line-surface combined contact type wind power variable pitch slewing bearing |
| CN117685294A (en) * | 2023-12-28 | 2024-03-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Ball-column combined pitch bearing |
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| CN206738387U (en) * | 2017-05-10 | 2017-12-12 | 捷颂（上海）传动科技有限公司 | Cylinder needle roller combination bearing |
| CN208268226U (en) * | 2018-04-25 | 2018-12-21 | 成都天马铁路轴承有限公司 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
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| CN101194103A (en) * | 2005-06-06 | 2008-06-04 | Imo控股有限责任公司 | Bearing unit for longitudinally extending rotor blades of a wind power plant, wind power plant equipped with such a rotor blade bearing arrangement and method for operating such a wind power plant |
| US20110115233A1 (en) * | 2008-02-18 | 2011-05-19 | Schroeppel Werner | Wind power plant and method for operating the same |
| CN201448365U (en) * | 2009-07-21 | 2010-05-05 | 常州奥旋回转支承有限公司 | Cylinder rollers turntable bearing |
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| CN206072113U (en) * | 2016-09-26 | 2017-04-05 | 安徽远丰回转支承有限责任公司 | A kind of top load is wear-resistant pivoting support |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253162A (en) * | 2018-11-30 | 2019-01-22 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Inserted three-row roller turntable bearing |
| CN111322197A (en) * | 2018-12-17 | 2020-06-23 | 新疆金风科技股份有限公司 | Wind turbines and pitch bearing assemblies |
| CN111322197B (en) * | 2018-12-17 | 2021-10-08 | 新疆金风科技股份有限公司 | Wind turbines and pitch bearing assemblies |
| CN109737006A (en) * | 2018-12-29 | 2019-05-10 | 北京金风科创风电设备有限公司 | Bearing, and pitch control device and method of wind generating set |
| CN110345154A (en) * | 2019-07-15 | 2019-10-18 | 北京金风科创风电设备有限公司 | Become oar sliding bearing, wind generating set's oar system and wind generating set become |
| CN112555275A (en) * | 2019-09-26 | 2021-03-26 | 北京金风科创风电设备有限公司 | Bearing and wind generating set |
| CN112555275B (en) * | 2019-09-26 | 2023-06-02 | 北京金风科创风电设备有限公司 | Bearings and wind turbines |
| CN114526284A (en) * | 2022-01-26 | 2022-05-24 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Pitch bearing |
| CN115492852A (en) * | 2022-09-27 | 2022-12-20 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Slewing support bearing |
| CN117553071A (en) * | 2023-12-26 | 2024-02-13 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Line-surface combined contact type wind power variable pitch slewing bearing |
| CN117685294A (en) * | 2023-12-28 | 2024-03-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Ball-column combined pitch bearing |
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Application publication date: 20180807 |
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