CN107165777A - Become oar device and have this wind generating set who becomes oar device - Google Patents
Become oar device and have this wind generating set who becomes oar device Download PDFInfo
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- CN107165777A CN107165777A CN201710630139.8A CN201710630139A CN107165777A CN 107165777 A CN107165777 A CN 107165777A CN 201710630139 A CN201710630139 A CN 201710630139A CN 107165777 A CN107165777 A CN 107165777A
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- change device
- blade
- vane change
- bulge
- extension
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- 230000007246 mechanism Effects 0.000 claims abstract description 12
- 230000008859 change Effects 0.000 claims description 88
- 230000005540 biological transmission Effects 0.000 claims description 57
- 238000003780 insertion Methods 0.000 claims description 17
- 230000037431 insertion Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 238000005452 bending Methods 0.000 abstract description 3
- 230000007704 transition Effects 0.000 description 10
- 238000012545 processing Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000003442 weekly effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003913 materials processing Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/329—Azimuth or yaw angle
-
- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention provides a variable pitch device for a wind generating set and the wind generating set with the variable pitch device. The wind generating set comprises a hub and blades, the variable pitch device comprises a variable pitch bearing, a toothed belt and a driving mechanism for driving the toothed belt, the variable pitch bearing comprises a bearing inner ring and a bearing outer ring, the bearing inner ring comprises an extension part which extends outwards along the axial direction, the blades are fixedly connected with the extension part, the bearing outer ring is fixedly connected with the hub, and the toothed belt is connected to the extension part. According to the variable pitch device and the wind generating set, the ultimate bending moment load level of the blade root and the safety coefficient of the variable pitch device can be improved, and the failure risk of a variable pitch bearing, the failure risk of a toothed belt and the failure risk of a bolt are reduced.
Description
Technical field
The present invention relates to technical field of wind power generation, filled more particularly, to a kind of change oar for wind power generating set
Put and the wind power generating set with the vane change device.
Background technology
Wind power generating set is a kind of large-scale TRT that electric energy is converted wind energy into by wheel rotation, wind-power electricity generation
The blade angle of blade is adjusted according to the change of wind speed using vane change device to control absorption of the impeller to wind energy for unit.
Specifically, in wind power generating set during normal operation, when wind speed exceedes the rated wind speed of wind power generating set,
In order to control the power output of wind power generating set, the blade angle for controlling blade by vane change device is protected between 0 °~30 °
The rotating speed of card impeller is limited in rated range, and blade feathering for example is realized into shutdown to 90 ° of positions by vane change device.
Fig. 1 shows a kind of schematic diagram of vane change device of the prior art.Fig. 2 shows the vane change device in Fig. 1
Side elevation in partial section.As illustrated in fig. 1 and 2, vane change device includes including the He of bearing inner race 21 in pitch variable bearings 2, pitch variable bearings 2
In bearing outer ring 22, the bearing for passing through wheel hub connecting bolt 7 and pitch variable bearings 2 as the wheel hub 1 of the matrix of wind power generating set
Circle 21 is fixedly connected, and the blade 6 of wind power generating set is fixed by the bearing outer ring 22 of blade connecting bolt 8 and pitch variable bearings 2
Connection, transmission belt 3 bypasses drive mechanism 4, tensioning wheel 31 and transmission belt pre-tightening apparatus 32 and is tensioned the bearing for being connected to pitch variable bearings 2
On the periphery face of cylinder of outer ring 22.When needing become oar operation, the driving transmission belt 3 of drive mechanism 4, so as to drive pitch axis
Hold the bearing inner race 21 and wind power generating set of 2 bearing outer ring 22 and the blade 6 of wind power generating set relative to pitch variable bearings 2
Wheel hub 1 rotate, realize the change oar of blade.
However, the problem of above-mentioned vane change device has certain.Specifically, in the case of equivalent specifications blade, suffered by blade
Moment of flexure it is identical.Because blade 6 is connected with the bearing outer ring 22 of pitch variable bearings 2 in the prior art, therefore in equivalent specifications leaf
In the case of piece, the size of pitch variable bearings 2 is smaller, and the pitch circle of corresponding pitch variable bearings and wheel hub connecting bolt 7, bearing steel ball is straight
Footpath, transmission belt diameter layout are smaller.Because load is directly proportional to moment of flexure size, it is inversely proportional with pitch diameter, so, moment of flexure phase
With in the case of, the load suffered by load and bolt that steel ball is born is larger.This causes during vane propeller-changing, becomes
Oar bearing 2 bears larger change oar load.Thus, the bolt being connected with wheel hub 1, ball of pitch variable bearings 2 of pitch variable bearings 2 etc.
By larger load, damage of pitch variable bearings 2 itself and itself component etc. is easily caused.Therefore, it is of the prior art to become
Oar device there are relatively low pitch variable bearings lasso safety coefficient, pitch variable bearings and wheel hub connecting bolt safety coefficient is relatively low, transmission belt
Safety coefficient is relatively low, so that the problem of easily failing.
The content of the invention
In order to solve above-mentioned problem of the prior art, the present invention provide a kind of vane change device for wind power generating set with
And the wind power generating set with the vane change device, the vane change device can improve all parts of vane change device safety system
Number, lifts the security performance of vane change device.
There is provided a kind of vane change device for wind power generating set, the wind-driven generator according to an aspect of the present invention
Group includes wheel hub and blade, and the vane change device may include pitch variable bearings, actuated element and for driving the actuated element
Drive mechanism, the pitch variable bearings include bearing inner race and bearing outer ring, the bearing inner race include extend axially outwardly
Extension, the blade can be fixedly connected with the extension, and the bearing outer ring can be fixedly connected with the wheel hub, described
Actuated element may be provided on the extension.
According to an aspect of the present invention, the bearing inner race, which can have, axially extends and circumferentially disposed multiple
Axially extending bore, multiple axially extending bores can extend across the extension, and bearing inner race connecting bolt is logical through the axial direction
The blade is fastened to behind hole.
According to an aspect of the present invention, the extension may include the axial direction extended axially outwardly from the bearing inner race
Extension and the bulge-structure for being arranged on the axial continuation periphery.
According to an aspect of the present invention, the bulge-structure can be formed separately with the axial continuation, the projection
Structure is embedded into the periphery of the axial continuation.
According to an aspect of the present invention, the bulge-structure may include that the insertion extended radially inwardly is raised, the axial direction
The periphery of extension has corresponding insertion groove.
According to an aspect of the present invention, the bulge-structure may include to extend radially outward from the axial continuation
Radially extending portion and the actuated element installation portion that is axially extended from the end of the radially extending portion.
According to an aspect of the present invention, the bulge-structure can have at least one of following architectural feature：It is described convex
Rise in structure and be formed with lightening hole；The bulge-structure is annular or partial circle shape；The radial direction of the bulge-structure
On cross sectional shape be " one " shape, "T"-shaped or " L " shape.
According to an aspect of the present invention, the actuated element can be transmission belt, driving-chain or steel cable, and the actuated element is twined
On the external peripheral surface for being wound on the extension.
According to an aspect of the present invention, the transmission belt can be cog belt or silent chain.
According to an aspect of the present invention, tooth-shape structure can be formed with the external peripheral surface of the extension.
According to an aspect of the present invention, the groove for having the installation site for limiting actuated element can be set on the extension.
According to another aspect of the present invention there is provided a kind of wind power generating set, the wind power generating set includes can be such as
Upper described vane change device.
It is used for the vane change device of wind power generating set according to an embodiment of the invention, is ensureing blade specification identical feelings
Under condition, accordingly increased by pitch variable bearings size used in inner ring terminal pad progress inner ring change oar, the increase of bolt pitch diameter and spiral shell
Bolt quantity increase, actuated element distribution diameter increases, improves the load resistant power of blade root, reduce suffered by single bolt therewith
Load, reduces the load suffered by bearing roller.
Therefore, the vane change device according to an embodiment of the invention for wind power generating set improves blade root ultimate bending moment load
Lotus level, the safety coefficient for improving pitch variable bearings and connecting bolt, the safety coefficient for improving pitch variable bearings inner ring and outer ring and
Improve the safety coefficient of actuated element.
Brief description of the drawings
By the description carried out below in conjunction with the accompanying drawings to embodiment, above-mentioned and/or other objects and advantages of the invention will
It can become more fully apparent, wherein：
Fig. 1 shows a kind of schematic diagram of vane change device of the prior art；
Fig. 2 shows the side elevation in partial section of the vane change device in Fig. 1；
Fig. 3 is the stereogram of vane change device according to a first embodiment of the present invention；
Fig. 4 is the partial sectional view of vane change device according to a first embodiment of the present invention；
Fig. 5 is the stereogram of the terminal pad of vane change device according to a first embodiment of the present invention；
Fig. 6 A are the partial sectional views of vane change device according to a second embodiment of the present invention；
Fig. 6 B are the plans of the terminal pad of vane change device according to a second embodiment of the present invention；
Fig. 6 C are the front sectional view of the terminal pad of vane change device according to a second embodiment of the present invention；
Fig. 7 A and 7B are the partial sectional views of vane change device according to a third embodiment of the present invention；
Fig. 8 A and 8B are the partial sectional views of vane change device according to a fourth embodiment of the present invention；
Fig. 9 A and 9B are the partial sectional views of vane change device according to a fifth embodiment of the present invention.
Embodiment
Because the vane change device of prior art connects the bearing outer ring of blade and pitch variable bearings and outer ring is used to become oar side
Case, accordingly, there exist vane change device safety coefficient it is low the problem of.In order to solve the above problems, the present invention propose, using with existing skill
The outer ring of art becomes the different inner ring of oar scheme and becomes oar scheme, connects the bearing inner race of blade and pitch variable bearings, by being driven member
Part (for example, transmission belt) drives blade and bearing inner race relative to bearing outer ring and wheel hub rotation predetermined angular, realizes blade
Rotation becomes oar.Therefore, compared with becoming oar scheme with the outer ring of prior art, in the case of equal blade, i.e., blade root diameter is kept not
In the case of change, because blade root is connected with bearing inner race, then the size of bearing inner race and bearing outer ring is required to corresponding increase,
The diameter of wheel hub adpting flange also accordingly increases, correspondingly, the pitch diameter of bearing roller, actuated element layout diameter, company
Diameter of connecting bolt etc. can accordingly increase, and so as to improve the safety coefficient of all parts in vane change device, improve and become oar
The security performance of device.
For inner ring proposed by the present invention become oar scheme, present description provides realize blade be connected with bearing inner race and
The multiple illustrative embodiments how to be connected with actuated element.Described in detail next, with reference to accompanying drawing the present invention each
Specific embodiment.
First embodiment
Fig. 3 is the stereogram of the vane change device according to the first embodiment of the present invention.Fig. 4 is real according to of the invention first
Apply the partial sectional view of the vane change device of example.Fig. 5 is the solid of the terminal pad of vane change device according to a first embodiment of the present invention
Figure.
As shown in Figure 3 and Figure 4, vane change device according to a first embodiment of the present invention include pitch variable bearings 2, terminal pad 10,
Drive mechanism 4 and actuated element.Pitch variable bearings 2 include bearing inner race 21, bearing outer ring 22 and are arranged on bearing inner race 21
Rolling element 23 (for example, ball or roller) between bearing outer ring 22, the bearing outer ring 22 is set in the outer of bearing inner race 21
Week, and can be rotated relative to bearing inner race 21.Bearing outer ring 22 can be fixed by bearing outer ring connecting bolt 7 and wheel hub 1 to be connected
Connect, bearing inner race 21 can be fixedly connected by bearing inner race connecting bolt 8 with blade 6.Terminal pad 10 be located at bearing inner race 21 with
Between blade 6.
The kind of drive between drive mechanism 4 and actuated element can be using V belt translation, chain drive, elevator transmission, steel
The modes such as rope drive.Correspondingly, actuated element can be transmission belt, driving-chain, steel cable etc., as long as can transmit drive force to
Blade 6 is so that blade 6 rotates.In the following description, it is described so that actuated element is transmission belt as an example.
In the state of vane change device is installed to wind power generating set, bearing outer ring 22 is fixedly attached to wind power generating set
Wheel hub 1 on, terminal pad 10 is fixedly connected between bearing inner race 21 and blade 6.More specifically, the axial direction first of terminal pad 10
End in contact bearing inner race 21, the blade root end of axially the second end in contact blade 6 of terminal pad 10.In the flange with bearing inner race 21
Connect and be provided with corresponding axially extending bore 14 (will be described in detail hereinafter), axle in the corresponding position of through hole, terminal pad 10
Hold inner ring connecting bolt 8 and sequentially pass through through hole on through hole and terminal pad 10 on bearing inner race 21, be then screwed to blade 6
In blade root tapped blind hole, after being fastened by clamp nut, bearing inner race 21, terminal pad 10 and blade 6 are fixedly connected on one
Rise.Drive mechanism 4 is arranged on the wheel hub 1 of wind power generating set, and transmission belt 3 is set in terminal pad 10 across drive mechanism 4
Periphery, two ends are by the pretension of pre-tightening apparatus 32 on the external peripheral surface of terminal pad 10.When need adjust blade 6 blade angle
When, drive mechanism 4 is run, and transmission belt 3 drives terminal pad 10, bearing inner race 21 and blade 6 relative under the driving of drive mechanism 4
In bearing outer ring 22 and the rotation predetermined angular of wheel hub 1, so as to realize the change oar of blade 6.
In an embodiment according to the present invention, drive mechanism 4 is made up of pitch drive gear, and vane change device, which may also include, to be opened
Bearing up pulley 31, transmission belt 3 is stretched on the periphery of terminal pad 10 by tensioning wheel 31 and pitch drive gear 4.
As in Figure 3-5, in an embodiment of the present invention, terminal pad 10 is annulus disk-like structure.Connect for the ease of description
The structure of disk 10 is connect, terminal pad 10 inner circumferential portion 11, outer circumference 13 can be divided into along radial direction and connected
The central transition section 12 of outer circumference 13 and inner circumferential portion 11.
As shown in figure 5, multiple first axially extending bores 14 are offered in inner circumferential portion 11, multiple edges of first axially extending bore 14
Axially extending and evenly distributed in the circumferential direction.It is provided with bearing inner race 21 corresponding with the plurality of first axially extending bore 14
Multiple second axially extending bores (can be screwed hole), the blade root of blade 6 is provided with corresponding multiple screwed holes, blade 6
The screwed hole of root can be blind hole.When connecting bearing inner race 21, terminal pad 10 with blade 6, by bearing inner race 21, terminal pad
10 with the coaxial alignment of blade 6, and the screwed hole or through hole of three is accordingly aligned in the axial direction, bearing inner race connecting bolt 8 according to
After the first axially extending bore 14 on secondary the second axially extending bore and terminal pad 10 through bearing inner race 21, wind-power electricity generation is screwed to
In the screwed hole of the blade 6 of unit, then fastened by nut, so as to realize the blade 6 of wind power generating set with becoming
The bearing inner race 21 of oar bearing 2 is fixedly connected (as shown in Figures 3 and 4).
In addition, in embodiment, bearing outer ring 22 is provided with multiple screwed holes or through hole.Pass through bearing outer ring connecting bolt
7 pass through the corresponding screwed hole for the wheel hub 1 that wind power generating set is fastened to after bearing outer ring 22, so as to realize the He of bearing outer ring 22
The wheel hub 1 of wind power generating set is fixedly connected.
In addition to being threaded the mode in hole except the above-mentioned root in blade 6, it can also be enclosed in the root pre-buried one of blade 6
Stud, the stud is peripherally disposed on the root of blade 6.When by blade 6 and terminal pad 10 and bearing inner race 21
During connection, the stud of blade 6 sequentially passes through the first axially extending bore 14 of terminal pad 10 and the second axially extending bore of bearing inner race 21,
Then fastened by nut.
Because transmission belt 3 has certain width, in order to meet the installation requirement of transmission belt 3, terminal pad 10 and transmission belt 3
The surface axial width of the outer circumference 13 of contact is more than or equal to the width of transmission belt 3, therefore the excircle of terminal pad 10
It is thicker that part 13 may be done；Bolted intensity requirement is carried out with blade 6 and bearing inner race 21 in order to meet simultaneously,
The thickness of the inner circumferential portion 11 being connected with bearing inner race connecting bolt 8 of terminal pad 10 may also be larger.
Therefore, cost-effective in order to reduce the weight of terminal pad 10, the outer circumference 13 of terminal pad 10 can be formed as
Non- completely circular structure, for example, inner circumferential portion 11 is completely circular structure, and central transition section 12 and outer circumference 13 are formed as non-
Completely circular structure, but be a part for annulus.Because the change propeller angle in the actual pitch process Leaf 6 of blade 6 is
Between 0 °~30 °, and transmission belt 3 winding angle as shown in figure 3, not being intertwined and connected in the whole circumference of disk 10, therefore
As long as the structure of terminal pad 10 disclosure satisfy that the winding requirement of transmission belt 3.In the present embodiment, by the periphery of terminal pad 10
Part is designed as non-completely circular structure, can save material cost and mitigate the deadweight of terminal pad 10.Obviously, in actual implementation process
In, terminal pad 10 can also be designed as completely circular structure according to actual needs.
Further, it is also possible to central transition section 12 is set to spoke-like structure, in other words, can be in terminal pad 10
Multiple lightening holes 15 spaced apart are provided with central transition section 12, further to mitigate the deadweight of terminal pad 10.
In addition to the above construction, in the case where meeting installation needs and intensity requirement, central transition section 12 may be used also
To set relatively thin, the axial width of central transition section 12 is set to be less than or equal to the axial width of inner circumferential portion 11, or
Less than or equal to inner circumferential portion 11 and the axial width of outer circumference 13, so as to further mitigate the weight of terminal pad 10.
In this case, inner circumferential portion 11 and outer circumference 13 are generally cylindrical, are intercepted along the radial direction of terminal pad 10
Cross sectional shape can be approximately " work " or Z-shaped.
In the present invention, for terminal pad 10 each several part radial width and axial width equidimension, without special
Limitation, if in installation process and after installing, terminal pad 10 and bearing outer ring 22 and bearing outer ring connecting bolt 7
Between do not interfere.
, can be in the following way when the vane change device of the present embodiment and wind power generating set are assembled：Pass through first
Bearing outer ring 22 is fixedly connected by bearing outer ring connecting bolt 7 with the wheel hub 1 of wind power generating set, then terminal pad 10 is placed just
Bearing inner race 21, is fixedly connected by position by bearing inner race connecting bolt 8 with the blade 6 of terminal pad 10 and wind power generating set,
So erection sequence can avoid the interference between outer ring connecting bolt 7 and terminal pad 10.
In an exemplary embodiment of the present invention, the periphery of terminal pad 10 is driven with transmission belt 3 by friction.Cause
This, as needed, corresponding antifriction processing can be carried out on the outer circumference surface of terminal pad 10 or increases the processing that rubs, changes and coordinates table
Face coefficient of friction, to meet the transmission requirement of different transmission belts, and avoids occurring the wind skidded between transmission belt 3 and terminal pad 10
Danger.
Alternatively, transmission belt 3 can be cog belt or silent chain etc..In the situation that transmission belt 3 is cog belt or silent chain
Under, also tooth-shape structure can be set on the outer circumference surface of terminal pad 10, to coordinate with cog belt or silent chain.
Second embodiment
Fig. 6 A are the partial sectional views of vane change device according to a second embodiment of the present invention.Fig. 6 B are according to the present invention second
The plan of the terminal pad of the vane change device of embodiment.Fig. 6 C are the terminal pads of vane change device according to a second embodiment of the present invention
Front sectional view.
As shown in Figure 6A, vane change device according to a second embodiment of the present invention also includes terminal pad.Fig. 6 B and 6C are shown
The structural representation of the terminal pad of vane change device according to a second embodiment of the present invention.It is different from the vane change device of first embodiment
, vane change device according to a second embodiment of the present invention, the set location and structure of terminal pad 40 are changed.Except even
The structure of disk 40 and blade 6 is connect, the structure of vane change device according to a second embodiment of the present invention and the change according to first embodiment
The structure of oar device is identical, therefore, and the description of same section is omitted here, and only describes the parts different from first embodiment.
As shown in figs. 6b and 6c, in the second embodiment of the present invention, terminal pad 40 or annulus plate-like, and including
The central transition section 42 of inner circumferential portion 41, outer circumference 43 and connection inner circumferential portion 41 and outer circumference 43.
The inner circumferential portion 41 of terminal pad 40 is attached at the position of close pitch variable bearings 2 of blade 6.As an example, the blade root of blade 6
Insertion groove can be formed with excircle, the inner circumferential portion 41 of terminal pad 40 can be plugged into the insertion groove of blade 6.Inner circle
Bolt hole can be formed with circumferential portion 41, inner circumferential portion insert blade 6 insertion groove in the case of, can be by interior
Circle connecting bolt 8 is connected to terminal pad 40 is pre-buried in the insertion groove of the blade root of blade 6.Transmission belt 3 is pre- by transmission belt
Tight device is connected on the external peripheral surface of terminal pad 40, so that the rotation of driving blade 6 becomes oar.
For the ease of terminal pad 40 is connected on the blade root excircle of blade 6, terminal pad 40 can be formed as multiple arcs
Section, a part for annulus or annulus is spliced into when being installed on blade root.Fig. 6 B show terminal pad 40 by two sectors
Constitute.The angle of circumference of each sector is less than or equal to 180 degree.For the ease of installing terminal pad 40, it is preferable that terminal pad 40
It can be made up of 3-6 sector.
Radially multiple sectors can be respectively embedded in the insertion groove of the blade root of blade 6.Preferably, terminal pad
40 inner circumferential portion 41 is formed with multiple insertion projections 44, and the multiple insertion projection 44 is prolonged in radially inward direction
Stretch, and be circumferentially evenly arranged.Axially extending bore 45 can be formed with insertion projection 44, for carrying out bolt with blade 6
Connection.The multiple insertion projection 44 is embedded in and is connected in the insertion groove of blade 6, is fixedly connected by bolt with blade 6.
In a second embodiment, terminal pad 40 and the connected mode of blade 6 are not limited to the mode of diagram, it would however also be possible to employ pin
The modes such as connection, wedge shape connection, seam positioning.
With terminal pad 10 according to a first embodiment of the present invention similarly, the situation of installation needs and intensity requirement is being met
Under, the outer circumference 43 of terminal pad 40 can also be not formed as completely circular structure, can also make the axial direction of central transition section 42
Thinner thickness, and it is formed with lightening hole etc. in central transition section.In addition, the section intercepted along the radial direction of terminal pad 40
Shape can be approximately " work " shape, Z-shaped, " L " shape or "T"-shaped.
The shape of terminal pad 40 is not limited to diagram shape and shape described above, as long as the cylindrical weekly form of terminal pad 40
Face, which disclosure satisfy that the cooperation demand of transmission belt and install, to be needed and intensity requirement.
3rd embodiment
Fig. 7 A and Fig. 7 B show the partial sectional view of vane change device according to a third embodiment of the present invention.It is real according to the 3rd
Applying the vane change device of example also includes terminal pad, still, from unlike first embodiment and second embodiment, implementing according to the 3rd
Terminal pad and the blade 6 of example form as one structure, i.e. inner circumferential portion and blade root is formed as one structure.In other words,
Bulge-structure 60 can be formed with the outer peripheral face of the blade root of blade 6, instead of first embodiment and second embodiment
In terminal pad.Certainly, can also be dismountable between bulge-structure 60 and the outer peripheral face of blade root.Transmission belt 3 passes through pretension
Device is connected on the external peripheral surface of the bulge-structure 60, and the direct drive rotation of blade 6 becomes oar.
Bulge-structure 60 may include the radially extending portion extended radially outward from blade root periphery, and transmission belt 3 can be twined
On the external peripheral surface for being wound on the radially extending portion.Further, the bulge-structure 60 can also be included from radially
The axial continuation that extension end is axially extended, transmission belt 3 can be wrapped in the cylindrical of the axial continuation
In perimeter surface.
It is similar with the terminal pad of first embodiment and second embodiment, the bulge-structure 60 can also be formed as annular or
Partial circle shape, the outer circumference of bulge-structure 60 can also be not formed as completely circular structure, can also be in radial extension
It is formed with lightening hole etc..Shape on bulge-structure 60 can be with the connection that is shown in the terminal pad 10 and Fig. 6 B shown in Fig. 5
The shape of disk 40 is identical or approximate, is not detailed herein.
As shown in Figure 7 A, during blade 6 is made, it is possible to use make blade material identical material convex to be formed
Play structure 60.Alternatively, as shown in Figure 7 B, the situation for the intensity requirement for becoming oar operation can not be met in the material for making blade 6
Under, other suitable materials processing blade root and bulge-structure 60 can be chosen, so as to meet intensity requirement.
It is not limited to illustrate shape according to the shape of the bulge-structure 60 of the present embodiment, as long as the cylindrical weekly form of bulge-structure 60
Face disclosure satisfy that the cooperation demand of transmission belt., can be to bulge-structure 60 in order to meet the transmission requirement of different transmission belts
Outer circumference surface on carry out corresponding antifriction or increase to rub processing, the coefficient of friction of change matching surface.Alternatively, transmission belt 3 can
Think cog belt or silent chain, therefore, also tooth-shape structure can be set on the outer circumference surface of bulge-structure 60, with cog belt or
Silent chain coordinates.
Fourth embodiment
Fig. 8 A and Fig. 8 B show the partial sectional view of vane change device according to a fourth embodiment of the present invention.With according to this hair
Unlike bright first and second embodiment, terminal pad is eliminated according to the vane change device of fourth embodiment, but with according to this
The 3rd embodiment of invention is similar, and transmission belt 3 is directly connected to the blade root of blade 6 by transmission belt pre-tightening apparatus, so as to drive
The rotation of movable vane piece 6 becomes oar.But, from unlike 3rd embodiment, bulge-structure is not formed in the blade root periphery of blade 6
60, but transmission belt 3 is directly wound on blade root periphery.
, as shown in Figure 8 B, can be in blade root and transmission in order to further limit the cooperation scope of blade 6 and transmission belt 3
Band mating part opens up fluted 601 or other similar process, so that transmission belt 3 is stably placed in groove 601, prevents from passing
Dynamic band play about 3.
Similarly, blade 6 with the matching surface of transmission belt 3 using corresponding antifriction or can increase the processing that rub, and change is matched somebody with somebody
Close skin-friction coefficient.Alternatively, transmission belt 3 can be cog belt or silent chain, therefore, can also be in the outer of the blade root of blade 6
Tooth-shape structure is set on periphery, to coordinate with cog belt or silent chain.
5th embodiment
Fig. 9 A and 9B show the partial sectional view of vane change device according to a fifth embodiment of the present invention.With according to the present invention
Above-described embodiment unlike, the bearing inner races 21 of pitch variable bearings 2 axially extends outwardly beyond bearing outer ring 22 and made a reservation for
Length, in other words, the direction that bearing inner race 21 is facing axially in blade 6 are formed with extension 210,310, bearing inner race 21
On axially extending bore also extend across extension 210,310, therefore, it can to make bearing inner race connecting bolt 8 to pass through bearing inner race
21 and extension 210,310 after be fastened to blade 6, so that blade 6 be fixedly connected with bearing inner race 21.
Transmission belt 3 is connected on the external peripheral surface of extension 210,310 of bearing inner race 21 by pre-tightening apparatus, driving
Bearing inner race 21 rotates, and drives the rotation of blade 6 to become oar by bearing inner race 21.
As shown in Figure 9 A, extension 210 can be axially from the definite length extended of bearing inner race 21, and shape is generally
Cylindrical shape.The predetermined length is more than the width of the transmission belt 3., can be to extension 210 in order to coordinate with transmission belt 3
External peripheral surface carries out respective handling, is rubbed or antifriction processing for example, carrying out increasing to the outer circumference surface.Alternatively, transmission belt 3 can be with
For cog belt or silent chain, therefore, also tooth-shape structure can be formed on the external peripheral surface, to be nibbled with cog belt or silent chain
Close.
As shown in Figure 9 B, extension 310 is different from the extension 210 in Fig. 9 A, and extension 310 is in prolonging shown in Fig. 9 A
Further comprise bulge-structure on the basis of extending portion 210, further to increase the pitch diameter of transmission belt 3.
As shown in Figure 9 B, extension 310 can include axial continuation 312 and be formed in axial continuation 312
The bulge-structure of periphery.
Bulge-structure may include the radially extending portion 314 extended radially outward, in this case, and transmission belt 3 can
On the external peripheral surface for being wrapped in radially extending portion 314.Further, bulge-structure can also be included from radially extending portion
The actuated element installation portion 316 that 314 end is axially extended, transmission belt 3 can be wrapped in the cylindrical of actuated element installation portion 316
In perimeter surface.Bulge-structure can be integrally formed with axial continuation 312, terminal pad that can also be as shown in the second embodiment
40 like that, are formed as single part, on the periphery for being inserted into axial continuation 312.For example, radially extending portion 314
Inner circumferential can be formed with that the insertion that extends radially inwardly is raised, and it is recessed that the periphery of axial continuation 312 can be formed with corresponding insertion
Groove, so that bulge-structure is combined in the way of inserting raised and insertion fit depressions with axial continuation 314.With above retouching
The structure of terminal pad 40 in the embodiment stated is similar, and the cross sectional shape of bulge-structure can be " one " shape, " T " or " L " shape.It is convex
Playing structure can be formed as that in annular or partial circle shape, radially extending portion 314 lightening hole can also be formed with.
In other words, can be by the way that terminal pad 10 according to a first embodiment of the present invention and bearing inner race 21 be formed into one
Structure obtains the embodiment shown in Fig. 9 B.In other words, the vane change device shown in Fig. 9 B also includes terminal pad 80, the terminal pad 80
It is integrally formed with bearing inner race 21, the terminal pad 80 include inner circumferential portion, outer circumference and connection inner circumferential portion and
The central transition section of outer circumference.Multiple axially extending bores of bearing inner race 21 extend through the inner circumferential portion.
Terminal pad 80 (i.e. extension 310) shown in Fig. 9 B and the terminal pad 10 in previously described embodiment, it is connected
Disk 40, bulge-structure 60 structure it is similar, the radial section of terminal pad 80 can be " work " shape or Z-shaped.Vane change device its
His structure is identical with the corresponding component of the variation paddle structure in previously described embodiment, therefore, no longer carries out repeated description.
Although being described respectively to above-mentioned five embodiments with reference to accompanying drawing, come for those skilled in the art
Say it should be understood that the architectural feature described in an example can apply to other embodiment wherein, in each feature
In the case where not colliding with each other, the feature in be the same as Example can not be mutually combined and form other modification side's embodiments.Example
Such as, in the example shown by Fig. 8 B, groove is opened up on blade root external peripheral surface, to prevent play above and below transmission belt, it is clear that
Which is readily applicable to the parts such as change oar disk or the extension in other embodiment.
The vane change device of the present invention can apply to wind power generating set, therefore, have the invention provides one kind above-mentioned
The wind power generating set of vane change device.
It is used for the vane change device of wind power generating set according to an embodiment of the invention and with the vane change device
Wind power generating set, in the case of blade specification identical, by the way that blade is connected on bearing inner race so that the change used
The size of oar bearing accordingly increases, and the increase of bolt pitch diameter and bolt quantity increase, transmission belt distribution diameter increase, carried therewith
The high load resistant power of blade root, reduces the load suffered by single bolt, reduces the load suffered by bearing roller.
Specifically, the vane change device according to an embodiment of the invention for wind power generating set improves blade root ultimate bending moment
Load level, the safety coefficient for improving pitch variable bearings and connecting bolt, improve the safety coefficient of pitch variable bearings inner ring and outer ring with
And the safety coefficient of transmission belt is improved, reduce the risk of pitch variable bearings fracture failure and the risk of transmission belt fracture failure.
What the above example of the present invention was merely exemplary, and the present invention is not limited to this.Those skilled in the art
It should be appreciated that：Without departing from the principles and spirit of the present invention, it can change these embodiments, wherein, this hair
Bright scope is limited in claim and its equivalent.
Claims (12)
1. a kind of vane change device for wind power generating set, the wind power generating set includes wheel hub (1) and blade (6), institute
Stating vane change device includes pitch variable bearings (2), actuated element and the drive mechanism (4) for driving the actuated element, and it is special
Levy and be,
The pitch variable bearings (2) include bearing inner race (21) and bearing outer ring (22), and the bearing inner race (21) is included vertically
The extension (210,310) stretched out, the blade (6) is fixedly connected with the extension (210,310), outside the bearing
Circle (22) is fixedly connected with the wheel hub (1), and the actuated element is arranged on the extension (210,310).
2. vane change device as claimed in claim 1, it is characterised in that the bearing inner race (21), which has, to be axially extended and edge
Multiple axially extending bores of circumferential directions, multiple axially extending bores are extended through in the extension (210,310), bearing
Circle connecting bolt (8) is fastened to the blade (6) after passing through the axially extending bore.
3. vane change device as claimed in claim 1, it is characterised in that the extension (310) is included from the bearing inner race
(21) axial continuation (312) that extends axially outwardly and it is arranged on the convex of the axial continuation (312) periphery
Play structure.
4. vane change device as claimed in claim 3, it is characterised in that the bulge-structure and the axial continuation
(312) it is formed separately, the bulge-structure is embedded into the periphery of the axial continuation (312).
5. vane change device as claimed in claim 4, it is characterised in that the bulge-structure includes the insertion extended radially inwardly
Projection, the periphery of the axial continuation (312) has corresponding insertion groove.
6. vane change device as claimed in claim 3, it is characterised in that the bulge-structure is included from the axial continuation
(312) radially extending portion (314) that extends radially outward and from the end of the radially extending portion (314) vertically
The actuated element installation portion (316) of extension.
7. vane change device as claimed in claim 3, it is characterised in that the bulge-structure has in following architectural feature extremely
Few one kind：
Lightening hole is formed with the bulge-structure；
The bulge-structure is annular or partial circle shape；
Cross sectional shape on the radial direction of the bulge-structure is " one " shape, "T"-shaped or " L " shape.
8. the vane change device as any one of claim 1-7, it is characterised in that the actuated element is transmission belt, passed
Dynamic chain or steel cable, the actuated element are wrapped on the external peripheral surface of the extension (210,310).
9. vane change device as claimed in claim 8, it is characterised in that the transmission belt is cog belt or silent chain.
10. vane change device as claimed in claim 9, it is characterised in that on the external peripheral surface of the extension (210,310)
It is formed with tooth-shape structure.
11. vane change device as claimed in claim 8, it is characterised in that restriction is provided with the extension (210,310) and is passed
The groove of the installation site of dynamic element.
12. a kind of wind power generating set, it is characterised in that the wind power generating set includes any one of claim 1-11 institute
The vane change device stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630139.8A CN107165777A (en) | 2017-07-28 | 2017-07-28 | Become oar device and have this wind generating set who becomes oar device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710630139.8A CN107165777A (en) | 2017-07-28 | 2017-07-28 | Become oar device and have this wind generating set who becomes oar device |
Publications (1)
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| CN107165777A true CN107165777A (en) | 2017-09-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710630139.8A Pending CN107165777A (en) | 2017-07-28 | 2017-07-28 | Become oar device and have this wind generating set who becomes oar device |
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| CN108457795A (en) * | 2018-04-26 | 2018-08-28 | 丁超 | The wind turbines rotor of automatic variable-pitch and disability protection |
| CN109139394A (en) * | 2018-10-31 | 2019-01-04 | 北京金风科创风电设备有限公司 | Hub and impeller of wind generating set and mounting method of variable pitch control component |
| WO2019019542A1 (en) * | 2017-07-28 | 2019-01-31 | 北京金风科创风电设备有限公司 | Variable-pitch device and wind turbine having same |
| CN109555651A (en) * | 2017-09-27 | 2019-04-02 | 新疆金风科技股份有限公司 | Transmission device, pitch-controlled system and wind power generating set |
| CN110469461A (en) * | 2019-08-14 | 2019-11-19 | 树根互联技术有限公司 | A kind of fracture predictor method of blower tooth band, its device and readable storage medium storing program for executing |
| CN110778455A (en) * | 2019-12-11 | 2020-02-11 | 湘电风能有限公司 | Variable pitch connecting structure of wind generating set |
| CN111255631A (en) * | 2020-02-15 | 2020-06-09 | 吴志华 | Variable pitch device of wind driven generator |
| CN112352098A (en) * | 2018-07-02 | 2021-02-09 | 湾色斯能源股份公司 | Device for adjusting the angle of attack of a wind turbine blade of a wind turbine |
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| CN109139394A (en) * | 2018-10-31 | 2019-01-04 | 北京金风科创风电设备有限公司 | Hub and impeller of wind generating set and mounting method of variable pitch control component |
| CN110469461A (en) * | 2019-08-14 | 2019-11-19 | 树根互联技术有限公司 | A kind of fracture predictor method of blower tooth band, its device and readable storage medium storing program for executing |
| CN110469461B (en) * | 2019-08-14 | 2020-09-18 | 树根互联技术有限公司 | Fracture estimation method and device for fan toothed belt and readable storage medium |
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Application publication date: 20170915 |