CN209011999U - The shafting and wind power generating set of wind power generating set - Google Patents
The shafting and wind power generating set of wind power generating set Download PDFInfo
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- CN209011999U CN209011999U CN201821948492.7U CN201821948492U CN209011999U CN 209011999 U CN209011999 U CN 209011999U CN 201821948492 U CN201821948492 U CN 201821948492U CN 209011999 U CN209011999 U CN 209011999U
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- 238000010276 construction Methods 0.000 description 3
- 230000003447 ipsilateral effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000035772 mutation Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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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Abstract
The utility model provides the shafting and wind power generating set of a kind of wind power generating set, and the shafting of the wind power generating set includes: shaft supporting part, and the pedestal of shaft supporting part and wind power generating set is integrally formed；Moving axis, moving axis are connected to the wheel hub of wind power generating set；First bearing, first bearing is arranged between shaft supporting part and moving axis on the side in the first side close to wheel hub and second side far from wheel hub, wherein, the bearing capacity of the part of the close wheel hub of first bearing is greater than the bearing capacity of the part of the separate wheel hub of first bearing.The shafting and wind power generating set of wind power generating set according to the present utility model improve the utilization rate of bearing and the reliability of entire shafting for unstable wind load better adaptability.
Description
Technical field
The utility model relates to a kind of shafting of wind power generating set and wind power generating sets.
Background technique
In wind power generating set, the function of main shaft system is support impeller, and a part of load (for example, torque load) is passed
Generator is passed, by other load transmissions to support constructions such as pedestals, the quality of performance has extremely wind power generating set
Important influence.It is well known that shafting type selecting is the key factor of wind driven generation set main shaft system design, wherein reasonable axis
It holds type selecting and is related to shafting performance, manufacture assembly cost and O&M cost, be vital component part in shafting type selecting.
For bearing, the rigidity of double-row bearing is larger, with the good energy for resisting load (for example, bending load)
Power, it is possible to reduce shafting deforms the influence to power generator air gap, while shafting structure is compact, components are few.Currently, common double
Column bearing has tapered roller bearing, double-row self-aligning roller bearing etc., as shown in Figure 1, in traditional shafting of the pedestal as dead axle
Including rotation axis 1, main spindle front bearing 2, mainshaft rear bearing 3 and as the pedestal 4 of dead axle, wherein main spindle front bearing 2 can be double
Row tapered roller bearing, and the size of two row tapered rollers and contact angle are all the same.
Utility model content
In shafting of the datum axle as dead axle, in fact it could happen that the problem bad for local wind load adaptability, this is practical
It is novel that the shafting and wind power generating set of a kind of wind power generating set are provided, for unstable wind load better adaptability, mention
The reliability of the utilization rate of high bearing and entire shafting.
One side according to the present utility model, a kind of shafting of wind power generating set include: shaft supporting part, shaft supporting part with
The pedestal of wind power generating set is integrally formed；Moving axis, moving axis are connected to the wheel hub of wind power generating set；First bearing, first
Bearing is arranged between shaft supporting part and moving axis on the side in the first side close to wheel hub and second side far from wheel hub,
In, the bearing capacity of the part of the close wheel hub of first bearing is greater than the bearing capacity of the part of the separate wheel hub of first bearing.
Preferably, first bearing is double-row roller bearing, the forefront roller and first bearing of the close wheel hub of first bearing
The rank rear roller of separate wheel hub can asymmetrically be arranged.
Preferably, the contact angle of forefront roller is smaller than the contact angle of rank rear roller.
Preferably, the size of forefront roller can be greater than the size of rank rear roller.
Preferably, first bearing can be tapered roller bearing, cylinder roller bearing or self-aligning roller bearing.
Preferably, the shafting of wind power generating set may also include second bearing, and second bearing is in first side and described
It is arranged between shaft supporting part and moving axis on the other side in second side.
Preferably, the bearing capacity of the part of the close wheel hub of second bearing can be greater than the part of the separate wheel hub of second bearing
Bearing capacity.
Preferably, second bearing can be single-row tapered roller bearing or single row roller bearing.
Another aspect according to the present utility model, provides a kind of wind power generating set, and wind power generating set includes institute as above
The shafting for the wind power generating set stated.
The shafting and wind power generating set of wind power generating set according to the present utility model are laid out phase with traditional shafting
Than using asymmetric bearing can be with the stress positioned at not ipsilateral part of equalizer bearing, for unstable wind load adaptability
More preferably, the utilization rate and bearing life of bearing are improved.
In addition, the shafting and wind power generating set of wind power generating set according to the present utility model, are not changing shafting
In the case where overall structure, it is excessive that contact angle or single-row roller dimension only by adusting bearing roller can meet local load
Bearing requirements, increase bearing size without whole.In addition, being compared in the identical situation of size and specification of shafting system
In the shafting system of symmetrical bearing, asymmetric bearing is selected, shafting has better load-carrying properties, also can effectively avoid roller mistake
The phenomenon that carrying, generate heat, skidding.
In addition, the shafting and wind power generating set of wind power generating set according to the present utility model, can not change axis
The raising that bearing capacity is realized in the case where holding outer dimension interface, without influencing other fit dimensions of main shaft system, and bearing
Replacement main shafting structure will not be impacted, the maintenance of shafting and replacement cost reduce.
In addition, the shafting and wind power generating set of wind power generating set according to the present utility model, with traditional shafting cloth
Office compares, and is laid out using the shafting of asymmetric bearing, since axially position precision is high, there is stronger axial load to carry energy
Power, for wind power generating set main shaft system axial load adaptability more preferably.
Detailed description of the invention
Fig. 1 is that the shafting of the double-row roller bearing with symmetrical structure of wind power generating set is shown according to prior art
It is intended to.
Fig. 2 is the schematic diagram of the shafting of the wind power generating set of first embodiment according to the present utility model.
Fig. 3 is the section signal of the asymmetric double-row roller bearing of the shafting of wind power generating set according to the present utility model
Figure.
Fig. 4 is the schematic diagram of the shafting of the wind power generating set of second embodiment according to the present utility model.
Drawing reference numeral explanation:
1: rotation axis, 2: main spindle front bearing, 3: mainshaft rear bearing, 4,10: pedestal, 11: shaft supporting part, 20: moving axis, 30:
First bearing, 31: forefront roller, 32: rank rear roller, 40: wheel hub, 50: second bearing.
Specific embodiment
Now with reference to attached drawing a more complete description the embodiments of the present invention, the utility model is shown in the attached drawings
Exemplary embodiment.In the accompanying drawings, identical label always shows identical component.Attached drawing can not to scale draw, be
Clear, explanation and conventionally, can exaggerate the relative size, ratio and description of the element in attached drawing.
The wind power generating set of first embodiment according to the present utility model is described in detail below with reference to Fig. 2 and Fig. 3
The specific configuration of shafting.
The shafting of the wind power generating set of first embodiment according to the present utility model includes shaft supporting part 11,20 and of moving axis
First bearing 30.Shaft supporting part 11 and the pedestal 10 of wind power generating set are integrally formed, and in this shafting, pedestal 10 has both fixed
The part (shaft supporting part 11) for playing the role of dead axle of the effect of axis, generator unit stator and pedestal 10 is directly (for example, pass through method
It is blue) it is connected.Moving axis 20 is connected to the wheel hub 40 of wind power generating set, and moving axis 20 can be plugged into the shaft supporting part 11 of pedestal 10,
And be connected by first bearing 30, to be rotated in shaft supporting part 11.
Shaft supporting part 11 is formed as the tubular structure extended from pedestal 10, can also be the support frame being formed in pedestal 10
Frame, for example, being formed to have two braced frames of cyclic structure, two shaft ends of moving axis 20 can pass through two braced frame branch
Support.The construction for being formed as the shaft supporting part 11 of a part of pedestal 10 is not particularly limited, as long as can allow for moving axis 20 at it
Middle rotation.
As shown in Fig. 2, first bearing 30 is arranged in shaft supporting part 11 and is moved on the first side of the close wheel hub 40 of shafting
Between axis 20, wherein the bearing capacity of the part of the close wheel hub 40 of first bearing 30 is greater than holding for its part far from wheel hub 40
Carry power.As shown in Fig. 2, first bearing 30 is inner ring rotation, that is, the outer ring of first bearing 30, which can be fixed to, is formed as pedestal 10
The shaft supporting part 11 of a part, the inner ring of first bearing 30 can be fixed to moving axis 20.
For wind power generating set, load is transmitted by hub side, according to the variation of wind, is arranged in shafting
Not ipsilateral bearing can bear the different load of difference in size, specifically, what the part of the close hub side of bearing was born
Load is greater than the load that the part of the separate hub side of bearing is born.Therefore, using the bearing with symmetrical structure (for example, passing
The double-row roller bearing of system), may adaptability for biggish local load it is bad, service life and entire wind-force to bearing
The reliability of generating set constitutes potential threat.
In the shafting of wind power generating set according to the present utility model, the part of the close wheel hub 40 of first bearing 30
Bearing capacity can be greater than the bearing capacity of its part far from wheel hub 40.For example, first bearing 30 can have asymmetric bearing arrangement,
As shown in figure 3, first bearing 30 can be double-row roller bearing, the forefront roller 31 of the close wheel hub 40 of first bearing 30 and the
The rank rear roller 32 of the separate wheel hub 40 of one bearing 30 can be asymmetrically arranged.
In general, within the bearing, contact angle angle is different, the radial and axial component size of stress point also changes therewith
Become, contact angle θ (as shown in Figure 3) is bigger, and the axial carrying capacity of bearing roller is stronger, and radial bearing capacity is smaller, and wind-force
The shafting substantial radial load of generating set.Since compared with rank rear roller 32, forefront roller 31 is loaded larger, because before this
The contact angle of column roller 31 is smaller than the contact angle of rank rear roller 32, so that the bearing capacity of forefront roller 31 is greater than rank rear roller 32
Bearing capacity.In this way, the roller stress of adjustable first bearing 30, promotes wind power generating set shafting system safety margin.
In the case, can in the case where guaranteeing that 30 overall dimension of first bearing, front and back column roller dimension are constant,
The bearing requirements that the front and back column roller of first bearing 30 can be met by adjusting contact angle.
In addition, forefront roller 31 can also be made in order to make the bearing capacity of forefront roller 31 be greater than the bearing capacity of rank rear roller 32
Size be greater than rank rear roller 32 size (as shown in Figure 3), asymmetric bearing arrangement is formed, for example, making forefront roller 31
Width/diameter be greater than rank rear roller 32 width/diameter, but not limited to this, forefront roller can be adjusted according to actual design
31 and/or rank rear roller 32 size, as long as can make forefront roller 31 bearing capacity be greater than rank rear roller 32 bearing capacity.
As described above, can by adjust the angle of forefront roller 31 and/or rank rear roller 32, change forefront roller 31 and/
Or the mode of the size of rank rear roller 32 realizes asymmetric roller bearing structure, according to actual needs, can also adjust simultaneously
The angle of roller and the size for changing roller.In addition, the front and back asymmetric implementation of column roller of first bearing 30 is not limited to
Above content can also be realized by other means, as long as front and back column roller is made to be able to satisfy carrying under the wind load of mutation
It is required that and the problems such as do not have skidded overheat.
In symmetrical bearing arrangement, can there is a problem of it is bad for local extreme wind load adaptability, and this is practical
In novel, asymmetric bearing arrangement's mode is sampled, simple for structure, strong operability can avoid with symmetrical structure
The forefront roller occurred in double-row bearing be unsatisfactory for local loading demands and rank rear roller may waste one's talent on a petty job, showing of even skidding
As having better adaptability for the relatively big load of abrupt local, while cost-saved, improving the service life of bearing.
In Fig. 3, first bearing 30 is shown as double row tapered roller bearing, but not limited to this, for example, it can also be biserial
Self-aligning roller bearing etc..In addition, the form of first bearing 23 is also not necessarily limited to double-row roller bearing, may be alternatively formed in addition to biserial
Other bearing types outside bearing, as long as its bearing capacity close to the part of wheel hub 40 is greater than holding for its part far from wheel hub 40
Carry power.
In above-mentioned shafting structure, first bearing 30 is formed as asymmetric bearing structure, the close wheel hub of first bearing 30
The bearing capacity of 40 part can be born compared with big load, and especially for the local load of unstable mutation, adaptability is good.
In addition, first axle can only be arranged between shaft supporting part 11 and moving axis 20 in the case where shafting is short axle structure
30 are held as main spindle front bearing.However, as shown in Figure 2, when entire shafting is formed as long axle construction, wind power generating set
Shafting may also include second bearing 50.
As shown in Fig. 2, second bearing 50 can in second side of the separate wheel hub 40 of shafting, be arranged shaft supporting part 11 with
Between moving axis 20, as mainshaft rear bearing.Similar with first bearing 30, second bearing 50 can be set as inner ring as illustrated in fig. 2
Rotation, that is, the outer ring of second bearing 50 can be fixed to shaft supporting part 11, and inner ring can be fixed to moving axis 20.
Second bearing 50 can be single-row bearing, for example, single row roller bearing or single-row tapered roller bearing.
In addition, second bearing 50 can also be asymmetric bearing, for example, it may be the asymmetry similar with first bearing 30 is double
Column roller bearing.In this way, the bearing capacity of the part of the close wheel hub 40 of second bearing 50 can be greater than its part far from wheel hub 40
Bearing capacity, to further improve shafting to the adaptability of local load.Here, second bearing 50 can have and be described above
The identical structure of first bearing 30, therefore omit the detailed description of its specific structure.
Fig. 4 shows the shafting structure of the wind power generating set of second embodiment according to the present utility model.In Fig. 2
The shafting of first embodiment is compared, and in the shafting of the wind power generating set of second embodiment, first bearing 30 can be in shafting
It is arranged between shaft supporting part 11 and moving axis 20 in second side far from wheel hub 40, similarly, the close wheel hub of first bearing 30
The bearing capacity of 40 part is greater than the bearing capacity of its part far from wheel hub 40.
Equally, in the case where shafting is short axle structure, first axle only can be set between shaft supporting part 11 and moving axis 20
30 are held as mainshaft rear bearing, however, the shafting shown in Fig. 4 is formed as under long axis structure situation, wind power generating set
Shafting may also include second bearing 50.Second bearing 50 can be arranged on the first side of the close wheel hub 40 of shafting in shaft supporting part
Between 11 and moving axis 20, as main spindle front bearing.
In a second embodiment, it is described in the specific structure and first embodiment above of first bearing 30 and second bearing 50
Structure it is similar, therefore repeat no more.
The utility model also provides a kind of wind power generating set, and the wind power generating set includes shafting as described above.
As set forth above, in the shafting of the wind power generating set of the utility model, on the one hand asymmetric bearing rises
To support shafting effect, it is on the other hand preferable for the adaptability of load, can effectively adjustment axis honour in local load
The utilization rate of adaptability, bearing improves.In particular, for the structure of entire direct wind-driven generator group main shaft system, it can be improved and be
The stability and reliability of system.
The shafting and wind power generating set of wind power generating set according to the present utility model are laid out phase with traditional shafting
Than using asymmetric bearing can be with the stress positioned at not ipsilateral part of equalizer bearing, for unstable wind load adaptability
More preferably, the utilization rate and bearing life of bearing are improved.
In addition, the shafting and wind power generating set of wind power generating set according to the present utility model, are not changing shafting
In the case where overall structure, it is excessive that contact angle or single-row roller dimension only by adusting bearing roller can meet local load
Bearing requirements, increase bearing size without whole.In addition, being compared in the identical situation of size and specification of shafting system
In the shafting system of symmetrical bearing, asymmetric bearing is selected, shafting has better load-carrying properties, also can effectively avoid roller mistake
The phenomenon that carrying, generate heat, skidding.
In addition, the shafting and wind power generating set of wind power generating set according to the present utility model, can not change axis
The raising that bearing capacity is realized in the case where holding outer dimension interface, without influencing other fit dimensions of main shaft system, and bearing
Replacement main shafting structure will not be impacted, the maintenance of shafting and replacement cost reduce.
In addition, the shafting and wind power generating set of wind power generating set according to the present utility model, with traditional shafting cloth
Office compares, and is laid out using the shafting of asymmetric bearing, since axially position precision is high, there is stronger axial load to carry energy
Power, for wind power generating set main shaft system axial load adaptability more preferably.
Although the exemplary embodiment of the utility model is described in detail above, those skilled in the art are not taking off
From in the spirit and scope of the utility model, can the embodiments of the present invention be made with various modification and variation.But it answers
Work as understanding, in the opinion of those skilled in the art, these modification and variation will fall into the utility model defined by claim
Exemplary embodiment spirit and scope in.
Claims (9)
1. a kind of shafting of wind power generating set, which is characterized in that the shafting of the wind power generating set includes:
Shaft supporting part (11), the shaft supporting part (11) and the pedestal (10) of the wind power generating set are integrally formed；
Moving axis (20), the moving axis (20) are connected to the wheel hub (40) of the wind power generating set；
First bearing (30), the first bearing (30) is in the first side close to the wheel hub (40) and far from the wheel hub (40)
Second side in side on be arranged between the shaft supporting part (11) and the moving axis (20),
Wherein, the bearing capacity of the part close to the wheel hub (40) of the first bearing (30) is greater than the first bearing (30)
Far from the wheel hub (40) part bearing capacity.
2. the shafting of wind power generating set according to claim 1, which is characterized in that the first bearing (30) is biserial
Roller bearing, forefront roller (31) and the first bearing (30) of close the wheel hub (40) of the first bearing (30)
Rank rear roller (32) far from the wheel hub (40) is asymmetrically arranged.
3. the shafting of wind power generating set according to claim 2, which is characterized in that the contact of the forefront roller (31)
Angle is less than the contact angle of the rank rear roller (32).
4. the shafting of wind power generating set according to claim 2 or 3, which is characterized in that the forefront roller (31)
Size is greater than the size of the rank rear roller (32).
5. the shafting of wind power generating set according to claim 2, which is characterized in that the first bearing (30) is circular cone
Roller bearing, cylinder roller bearing or self-aligning roller bearing.
6. the shafting of wind power generating set according to claim 1, which is characterized in that the shafting of the wind power generating set
It further include second bearing (50), the second bearing (50) is arranged on the other side in first side and described second side
Between the shaft supporting part (11) and the moving axis (20).
7. the shafting of wind power generating set according to claim 6, which is characterized in that the second bearing (50) it is close
The bearing capacity of the part of the wheel hub (40) is greater than the carrying of the part far from the wheel hub (40) of the second bearing (50)
Power.
8. the shafting of wind power generating set according to claim 6, which is characterized in that the second bearing (50) is single-row
Tapered roller bearing or single row roller bearing.
9. a kind of wind power generating set, which is characterized in that the wind power generating set includes such as any one of claim 1-8 institute
The shafting for the wind power generating set stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821948492.7U CN209011999U (en) | 2018-11-23 | 2018-11-23 | The shafting and wind power generating set of wind power generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821948492.7U CN209011999U (en) | 2018-11-23 | 2018-11-23 | The shafting and wind power generating set of wind power generating set |
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| Publication Number | Publication Date |
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| CN209011999U true CN209011999U (en) | 2019-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821948492.7U Active CN209011999U (en) | 2018-11-23 | 2018-11-23 | The shafting and wind power generating set of wind power generating set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486237A (en) * | 2019-09-04 | 2019-11-22 | 东方电气集团东方电机有限公司 | A kind of megawatt-level low-speed direct wind-driven generator shafting device |
| CN113446173A (en) * | 2021-07-15 | 2021-09-28 | 上海电气风电集团股份有限公司 | Wind generating set and transmission shaft system thereof |
| CN113883022A (en) * | 2021-10-29 | 2022-01-04 | 新疆金风科技股份有限公司 | Wind generating set shafting and wind generating set |
-
2018
- 2018-11-23 CN CN201821948492.7U patent/CN209011999U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110486237A (en) * | 2019-09-04 | 2019-11-22 | 东方电气集团东方电机有限公司 | A kind of megawatt-level low-speed direct wind-driven generator shafting device |
| CN113446173A (en) * | 2021-07-15 | 2021-09-28 | 上海电气风电集团股份有限公司 | Wind generating set and transmission shaft system thereof |
| CN113883022A (en) * | 2021-10-29 | 2022-01-04 | 新疆金风科技股份有限公司 | Wind generating set shafting and wind generating set |
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