CN209262058U - A kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing - Google Patents
A kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing Download PDFInfo
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- CN209262058U CN209262058U CN201822000977.XU CN201822000977U CN209262058U CN 209262058 U CN209262058 U CN 209262058U CN 201822000977 U CN201822000977 U CN 201822000977U CN 209262058 U CN209262058 U CN 209262058U
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- 230000005611 electricity Effects 0.000 title claims abstract description 20
- 239000007787 solid Substances 0.000 claims 1
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- 238000005096 rolling process Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 206010016256 fatigue Diseases 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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Abstract
The utility model relates to be applied to double self-aligning roller bearing technical field of structures in wind-powered electricity generation industry, and in particular to a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing.It includes inner ring, outer ring, fixed end bearing rank rear roller, fixed end bearing forefront roller；Fixed end bearing rank rear roller and fixed end bearing forefront roller be set between the inner ring and outer ring, the maximum path position of the fixed end bearing rank rear roller and fixed end bearing forefront roller therefrom the heart respectively to two sides deflection.The utility model effectively improves the case where wind power principal axis fixing end bearing load is unevenly distributed, and improves service life significant effect.
Description
Technical field
The utility model relates to be applied to double self-aligning roller bearing technical field of structures in wind-powered electricity generation industry, and in particular to a kind of
Wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing.
Background technique
In wind-powered electricity generation industry, the bearing type selecting mode multiplicity of main shaft bearing, wherein double self-aligning roller bearing structures are applications
Most widely, it due to its arrangement form and carrying situation, is easy that the bearing close to gear box side is made the phenomenon that early fatigue occur.
The bearing of domestic and international wind-powered electricity generation main transmission MW class double-fed fan motor unit at present, generallys use two double-row self-aligning rollers
Bearing common pivot axis, before floating end a self-aligning roller bearing, axial direction without positioning, be solely subjected to radial load
Lotus, this bearing can be moved axially with the load of main shaft with deformation；A self-aligning roller bearing of fixing end carries out below
Bearing positioning, while axial load and radial load are born, guarantee the stability of transmission system.Such arrangement form, because wanting
Refinement degree is lower, is conducive to the processing and assembly of the base and front and back bearings seat of Wind turbines.But actual use process, due to
Base bearing is by the biggish axial force of wind-force bring, and the weight for adding front-end of spindle blade and wheel hub is larger, is transporting main shaft
Certain bending deformation is had during row.Rear-end of spindle is bigger as the combined load that the bearing of axially position is born,
When especially wind speed is higher, born axial force is bigger above wind generator set main shaft, causes heel row bearing roller that can move back, makes
There is the peeling phenomenon of large area in the roller and raceway that fixing end bearing is arranged close to gear-box one, when carrying more severe, can also
There is the phenomenon that retainer fracture.This substantially reduces the service life of bearing, and other side roller could not be adequately sharp
With causing the waste of bearing functionally, this undoubtedly increases bearing cost and reduces service life.
This patent is directed to the unbalance loading feature of fixed end bearing and the failure mode of appearance, optimizes to bearing arrangement, excellent
Bearing load distribution after change is more reasonable, improves the service life of bearing.
Summary of the invention
The utility model is directed on the bearing arrangement for early fatigue occur and is optimized, and it is long to design a kind of left and right column roller
Degree, the asymmetric bearing structure that contact angle is different from, make load distribution it is more rational, improve bearing life, reduce maintenance at
This.
In order to achieve the above objectives, the technical solution of the utility model is a kind of automatic tune of wind-power electricity generation main shaft biserial abnormity
Heart roller bearing, including inner ring, outer ring, fixed end bearing rank rear roller, fixed end bearing forefront roller；The inner ring and outer ring
Between fixed end bearing rank rear roller and fixed end bearing forefront roller, the fixed end bearing rank rear roller and fixing end are set
The maximum path position of bearing forefront roller therefrom the heart respectively to two sides deflection.
Based on the above-mentioned technical proposal, the utility model is directed on the bearing arrangement for early fatigue occur and is optimized, if
A kind of left and right column roller length is counted, the novel asymmetric bearing structure that contact angle is different from keeps load distribution more rational, mentions
High bearing life reduces maintenance cost.Base bearing is added front-end of spindle blade and wheel by the biggish axial force of wind-force bring
The weight of hub is larger, and main shaft is made to have certain bending deformation in the process of running.The utility model passes through the fixing end axis
Hold the maximum path position of rank rear roller and fixed end bearing forefront roller therefrom the heart respectively to the structure setting of two sides deflection so that
Load distribution is more rational, improves bearing life, reduces maintenance cost.
Further, the angle excursion of the fixed end bearing rank rear roller is greater than the deflection of fixed end bearing forefront roller
Angle.
Further, the diameter of the fixed end bearing rank rear roller and fixed end bearing forefront roller is from centre to both ends
It is gradually reduced.
Based on the above-mentioned technical proposal, by analyzing bearing collar path and rolling element contact, to rolling element edge
Repairing type processing is carried out, edge stress is reduced and concentrates.
Further, biserial abnormity self-aligning roller bearing further includes split type retainer, and split type retainer includes
Rank rear roller cage and forefront roller cage, the length of the rank rear roller cage are greater than the length of forefront roller cage
Degree.
Further, the maximum gauge of the fixed end bearing rank rear roller and fixed end bearing forefront roller is equal.
Further, the fixed end bearing rank rear roller length is greater than fixed end bearing forefront roller.
Further, the outer ring is arranged to the outer ring with double raceway of an entirety, and the inner ring is arranged to an entirety
Double raceway inner rings.
Further, inner wrap strip center rib.
Based on the above-mentioned technical proposal, using the inner ring with central rib, therefrom heart deflection is set the maximum path position of roller
Meter, prevents the skew of roller, realizes the stability of operating.
Further, large-flange and small rib is respectively set in the inner ring both ends, and small rib is to fixed end bearing forefront rolling
Son is limited, and large-flange limits fixed end bearing rank rear roller.
Further, the fixed end bearing rank rear roller is fixed end bearing generator side roller；The fixing end axis
Brought forward column roller is fixed end bearing blade-side roller.
Further explanation to the utility model carries out the innovation in structure: the structure mainly for self-aligning roller bearing
Bearing have the function of automatic aligning；The abnormity that left and right column roller length and contact angle and retainer length are different from is set
Meter；Operating condition is specifically applied in conjunction with bearing, devises two body retainers, is more conducive to applying when the unbalance loading of bearing；With tradition
The identical size of structure, service life can be improved 2.5 ~ 3 times；When the service life having the same with traditional product, bearing size can subtract
Few about 10%, bearing quality can reduce 30% or so, keep bearing arrangement more compact, design more lightweight；Using band center stop
The inner ring on side, the design of the maximum path position of roller therefrom heart deflection, prevents the skew of roller, realizes the stability of operating.Through
Calculating analysis is crossed, roller and raceway contact face pressure P and the product of rolling bearing sliding speed V about reduces 35%, can be improved
The wear-resisting property of bearing；The anisotropic design of left and right column, makes carrying more uniformization of two column rollers, rank rear effectively bears axial direction
Load, the positive receiving radial load in forefront, improves the service life of bearing；By to bearing collar path and rolling element contact
Analysis carries out repairing type processing to rolling element edge, reduces edge stress and concentrates.
The utility model has the beneficial effects that being improved for double self-aligning roller bearings in wind-powered electricity generation industry are applied to, effectively
Improvement wind power principal axis fixing end bearing load the case where being unevenly distributed, improve service life significant effect.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of roller；
In figure: 1, outer ring, 2, inner ring, 3, fixed end bearing rank rear roller, 4, fixed end bearing forefront roller, 5, big gear
Side, 6, small rib, 7, central rib, 8, rank rear roller cage, 9, forefront roller cage.
Specific embodiment
Embodiment 1
A kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing comprising inner ring 2, outer ring 1, fixing end axis
Hold rank rear roller 3, fixed end bearing forefront roller 4；Fixed end bearing rank rear roller 3 is set between the inner ring 2 and outer ring 1 and is consolidated
The maximum path position of fixed end bearing forefront roller 4, the fixed end bearing rank rear roller 3 and fixed end bearing forefront roller 4 from
Center is respectively to two sides deflection.
Further, the angle excursion of the fixed end bearing rank rear roller 3 is greater than the inclined of fixed end bearing forefront roller 4
Rake angle.Two 2 > θ 1 of column roller Lw2 > Lw1, θ.
Further, the diameter of the fixed end bearing rank rear roller 3 and fixed end bearing forefront roller 4 is from centre to two
End is gradually reduced.
Further, the maximum gauge of the fixed end bearing rank rear roller 3 and fixed end bearing forefront roller 4 is equal.
Further, fixed 3 length of end bearing rank rear roller is greater than fixed end bearing forefront roller 4.
Further, the outer ring 1 is arranged to the outer ring with double raceway of an entirety, and the inner ring 2 is arranged to an entirety
Double raceway inner rings.
Further, biserial abnormity self-aligning roller bearing further includes split type retainer, and split type retainer includes
The length of rank rear roller cage 8 and forefront roller cage 9, the rank rear roller cage 8 is greater than forefront roller cage 9
Length.
Further, the inner ring 2 is with central rib 7.
Further, 2 both ends of inner ring are respectively set large-flange 5 and small rib 6, before 6 pairs of small rib fixed end bearings
Column roller 4 is limited, and 5 pairs of large-flange fixed end bearing rank rear rollers 3 limit.
Further, the fixed end bearing rank rear roller 3 is fixed end bearing generator side roller；The fixing end axis
Brought forward column roller 4 is fixed end bearing blade-side roller.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (9)
1. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing, it is characterised in that: including inner ring, outer ring, consolidate
Fixed end bearing rank rear roller and fixed end bearing forefront roller；Fixed end bearing rank rear roller is set between the inner ring and outer ring
And fixed end bearing forefront roller, the maximum path position of the fixed end bearing rank rear roller and fixed end bearing forefront roller from
Center is respectively to two sides deflection.
2. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: the angle excursion of the fixed end bearing rank rear roller is greater than the angle excursion of fixed end bearing forefront roller.
3. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: biserial abnormity self-aligning roller bearing further includes split type retainer, and split type retainer includes rank rear roller cage
And forefront roller cage, the length of the rank rear roller cage are greater than the length of forefront roller cage.
4. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: the diameter of the fixed end bearing rank rear roller and fixed end bearing forefront roller is gradually reduced from centre to both ends.
5. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: the maximum gauge of the fixed end bearing rank rear roller and fixed end bearing forefront roller is equal.
6. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: the fixed end bearing rank rear roller length is greater than fixed end bearing forefront roller.
7. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: the outer ring is arranged to the outer ring with double raceway of an entirety, and the inner ring is arranged to double raceway inner rings an of entirety.
8. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: large-flange and small rib is respectively set in the inner ring both ends, and small rib limits fixed end bearing forefront roller, big to keep off
While being limited to fixed end bearing rank rear roller.
9. a kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing according to claim 1, feature exist
In: the fixed end bearing rank rear roller is fixed end bearing generator side roller；The fixed end bearing forefront roller is solid
Fixed end bearing blade-side roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000977.XU CN209262058U (en) | 2018-11-30 | 2018-11-30 | A kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822000977.XU CN209262058U (en) | 2018-11-30 | 2018-11-30 | A kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing |
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| Publication Number | Publication Date |
|---|---|
| CN209262058U true CN209262058U (en) | 2019-08-16 |
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|---|---|---|---|
| CN201822000977.XU Active CN209262058U (en) | 2018-11-30 | 2018-11-30 | A kind of wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322911A (en) * | 2018-11-30 | 2019-02-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing |
-
2018
- 2018-11-30 CN CN201822000977.XU patent/CN209262058U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322911A (en) * | 2018-11-30 | 2019-02-12 | 瓦房店轴承集团国家轴承工程技术研究中心有限公司 | Wind-power electricity generation main shaft biserial abnormity self-aligning roller bearing |
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Effective date of registration: 20231206 Address after: 116000 Zhuhua Industrial Park, Wafangdian City, Dalian City, Liaoning Province Patentee after: Wafangdian City bearing group wind power Bearing Co.,Ltd. Address before: 116300 Wafangdian Bearing Industrial Park, Dalian City, Liaoning Province Patentee before: WAFANGDIAN BEARING GROUP NATIONAL BEARING ENGINEERING TECHNOLOGY RESEARCH CENTER Co.,Ltd. |