CN208268226U - 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
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- CN208268226U CN208268226U CN201820601007.2U CN201820601007U CN208268226U CN 208268226 U CN208268226 U CN 208268226U CN 201820601007 U CN201820601007 U CN 201820601007U CN 208268226 U CN208268226 U CN 208268226U
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- annular groove
- raceway
- radial
- convex platform
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Abstract
The utility model 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 and the double axial cylindrical roller for bearing axial load of radial 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 sidewalls 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 advantages that it is strong that the bearing not only has traditional three-row cylinder roller bearing load carrying capacity, long service life, and its radial diameter for reducing bearing simultaneously, reduce the overall design manufacturing cost of wind power generating set.
Description
Technical field
The utility model relates to technical field of bearings, especially a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings.
Background technique
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 and rolling element 3 of the formation of inner ring 2, but wind power technology continues 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
The class bearing three-row cylinder roller bearing being had the disadvantages that in wind power generating set relative to 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 between rolling element using steel retainer, operational process easily causes retainer to deform and wear；Big MW class pitch variable bearings
Outer diameter can reach 6 meters, and manufacture and transport difficulty are big, at 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 double axial raceway 4 and row's radial direction raceway 5, 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 advantage that height
Bearing capacity and long life；Radial force and axial force are respectively subjected to by two rows of rollers, bear counter-force direction 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 change
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.
Utility model content
To solve problems of the prior art, the purpose of the utility model is to provide a kind of wind-powered electricity generation three-row cylinder rollers
The advantages that pitch variable bearings, it is strong which not only has traditional three-row cylinder roller bearing load carrying capacity, long service life, Er Qieqi
The radial diameter for reducing bearing simultaneously, reduces the overall design manufacturing cost of wind power generating set.
A kind of wind-powered electricity generation three-row cylinder roller pitch axis that in order to achieve the above purposes, the technical solution adopted by the utility model is:
It holds, bears the radial cylindrical roller of radial load including inner ring, outer ring, a row and the double axial cylindrical for bearing axial load is rolled
Son, the outer circumference surface of the inner ring are equipped with first annular groove, and the inner peripheral surface of the outer ring is equipped with annular convex platform, described
Annular convex platform is located in the first annular groove, between the two sidewalls and first annular groove two lateral walls of annular convex platform
Gap forms axial raceway, and the double axial cylindrical roller is respectively arranged in the axial raceway, outside the annular convex platform
Wall is equipped with second annular groove, and radial raceway, the diameter are formed between the second annular groove and the inner wall of first annular groove
It is set in the radial direction raceway to cylindrical roller.
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 sidewalls 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 utility model are:
In the utility model, it is between axial cylindrical roller and axial raceway and radial cylindrical roller and radial raceway
The mode of line contact, thus its to remain traditional three-row cylinder roller bearing load carrying capacity strong, the advantages that long service life, and
And radial raceway is that second annular groove is arranged by the outer wall in annular convex platform, cooperates the inner wall of first annular groove and is formed
, to make the radial direction raceway in concave structure, relative to traditional three-row cylinder roller, this structure substantially reduces it
Radial diameter, internal structure is more compact, and the bearing is made to meet requirement of the wind power generating set to pitch variable bearings radial space,
It will be widely used in the big MW class unit of wind-power electricity generation.
Detailed description of the invention
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 utility model embodiment one；
Fig. 4 is the structural schematic diagram of the utility model embodiment two；
Appended drawing reference:
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 embodiment
The embodiments of the present invention are described in detail with reference to the accompanying drawing.
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, the radial load of row receiving
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 sidewalls 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, so that it is remained, traditional three-row cylinder roller bearing load carrying capacity is strong, and long service life 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, cooperation first annular groove 8
Inner wall and formed, to make the radial direction raceway 5 in concave structure, relative to traditional three-row cylinder roller bearing, this
Structure substantially reduces its radial diameter, and internal structure is more compact, 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, outer ring 1 or the lesser outer ring 1 of two width can be cooperated to cooperate inner ring using the lesser inner ring 2 of two small width
2, specifically, being connected between the lesser inner ring 2 of two width or the lesser outer ring 1 of two width by bolt or pin shaft
It connects.
Further, the second annular groove 10 is set to the middle part of 9 outer wall of 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 inner sidewalls of second annular groove symmetrical, so that 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 sidewalls 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 embodiment of the present utility model above described embodiment only expresses, the description thereof is more specific and detailed,
But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field
For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
In the protection scope of the utility model.
Claims (3)
1. a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings bear the radial cylinder rolling of radial load including inner ring, outer ring, a row
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 sidewalls 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. a kind of wind-powered electricity generation three-row cylinder roller pitch variable bearings bear the radial cylinder rolling of radial load including inner ring, outer ring, a row
The sub and double axial cylindrical roller for bearing axial load, which is characterized in that the inner peripheral surface of the outer ring is equipped with the first ring
The outer circumference surface of connected in star, the inner ring is equipped with annular convex platform, and the annular convex platform is located in the first annular groove, ring
Gap between the two sidewalls 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820601007.2U CN208268226U (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 |
|---|---|---|---|
| CN201820601007.2U CN208268226U (en) | 2018-04-25 | 2018-04-25 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
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| Publication Number | Publication Date |
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| CN208268226U true CN208268226U (en) | 2018-12-21 |
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| CN201820601007.2U Active CN208268226U (en) | 2018-04-25 | 2018-04-25 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374835A (en) * | 2018-04-25 | 2018-08-07 | 成都天马铁路轴承有限公司 | Wind-powered electricity generation three-row cylinder roller pitch variable bearings |
-
2018
- 2018-04-25 CN CN201820601007.2U patent/CN208268226U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374835A (en) * | 2018-04-25 | 2018-08-07 | 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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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211203 Address after: 610306 1st floor, building 5, 143 Xiabei street, Chengxiang Town, Qingbaijiang District, Chengdu City, Sichuan Province Patentee after: CHENGDU TIANMA PRECISION MACHINERY Co.,Ltd. Address before: 610000 No. 143, Xiabei street, Chengxiang Town, Qingbaijiang District, Chengdu, Sichuan Patentee before: TIANMA (CHENGDU) RAILWAY BEARING Co.,Ltd. |
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| TR01 | Transfer of patent right |