CN110500242A - The girder and its core material of wind electricity blade and the laying method of plate - Google Patents
The girder and its core material of wind electricity blade and the laying method of plate Download PDFInfo
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- CN110500242A CN110500242A CN201910791222.2A CN201910791222A CN110500242A CN 110500242 A CN110500242 A CN 110500242A CN 201910791222 A CN201910791222 A CN 201910791222A CN 110500242 A CN110500242 A CN 110500242A
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- 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses the girder of wind electricity blade and its laying methods of core material and plate, the girder includes the first core material and plate, the laying method comprises the steps of: step (1), it is laid with the first core material, first core material at least side has inclined-plane, and the bottom surface on the inclined-plane and the first core material is at an acute angle；Step (2), the side on the inclined-plane are successively laid with plate, and the plate has inclined first side, the first side of the plate and inclined-plane fitting.The present invention is first to position and be laid with core material, and then plate is successively laid with close to core material edge, in such manner, it is possible to guarantee that plate and core material edge are bonded enough to close, and not will cause plate dislocation.The problem of forming straight joint when stacking the invention avoids plate and reducing plate construction stiffness and strength, solve the problems, such as that plate and core material interface have the defects of rich resin and dislocation of girder plate risk simultaneously, it is easy to implement, it is convenient for worker operation, can be improved production efficiency.
Description
Technical field
The present invention relates to wind electricity blade manufacture technology fields, and in particular to the girder and its core material and plate of a kind of wind electricity blade
The laying method of material.
Background technique
Most important plate one of of the wind energy as new energy, in the whole world, each state all obtains large development, strong wind at present
The wind power generating set of wheel diameter becomes the technological trend in wind-powered electricity generation field.With the increase of length of blade, the blower power of the assembling unit
Increase, the driving of blade design is gradually transferred to rigidity driving from intensity driving, therefore the lower-cost material of unit modulus at
It is designed for blade construction preferred.
Fan blade is mainly made of the part such as girder, web, shell, the pre-production master usually in its production process
Beam, web, then shell is made, girder is put into shell form together in shell manufacturing process, is bonded again after curing molding
Web makes blade after molding.
Carbon fiber is as a kind of higher fibrous material of modulus.Vacuum infusion molding process for compound and preimpregnation are mainly used at this stage
Material moulding process prepares the girder of pneumatic equipment bladess.Pultrusion plate excellent in mechanical performance, cost is relatively low for unit modulus, processing method
It is mature simple, be generally used for blade girder or auxiliary girder construction.With fiber-resin composite plate (hereinafter referred to as plate
Material) as wind electricity blade the auxiliary beam of girder and rear material, it is more and more common in wind electricity blade field.
Plate stacks to form multilayered structure, then can get the girder or auxiliary beam knot of blade after resin infusion with core material
Structure.The section for being currently used for the girder of blade or the plate of auxiliary girder construction is generally rectangle, material of rectangular channel stack when such as
Fruit shape can reduce the rigidity of structure and intensity of plate at straight joint.For the rigidity of structure and intensity for ensuring plate heap poststack, need to mention
The laying method of a kind of core material of girder of reasonable wind electricity blade and plate out.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies of existing technologies, the girder and its core material and plate of a kind of wind electricity blade are provided
Laying method.
In order to achieve the above object, the present invention provides the laying sides of a kind of core material of the girder of wind electricity blade and plate
Method, the girder include the first core material and plate, and the laying method comprises the steps of:
Step (1), is first laid with the first core material, and the first core material at least side has inclined-plane, the inclined-plane and institute
The bottom surface for stating the first core material is at an acute angle；
Step (2), then the side on the inclined-plane is successively laid with plate, and the plate has inclined first side
Face, the first side of the plate and inclined-plane fitting.
Preferably, the plate also has inclined second side, the bottom surface of the second side and the plate
It is at an acute angle.
Preferably, first core material is layed in the middle part of the girder, first core material in step (1)
Two sides all have the inclined-plane,；In step (2), the plate is equipped in the two sides of first core material.
Preferably, the girder also includes edge core material；The laying method also includes step (3): will be described
Edge core material is layed in the outside of the plate, and is bonded with the second side of the plate.
Preferably, first core material is trapezoidal, the edge core material is in a rectangular trapezoid.
Preferably, the unilateral side of first core material has the inclined-plane in step (1)；In step (2), described
The inclined-plane side of first core material is laid with the plate；The girder also includes edge core material；The laying method also includes
Step (3): the edge core material is layed in the outside of the plate, and is bonded with the second side of the plate.
Preferably, first core material and the edge core material are in a rectangular trapezoid.
Preferably, the section parallelogram of the plate, and the parallelogram wherein one it is diagonal
Two angles on line are additionally provided with oblique angle.
Preferably, the section of the plate is trapezoidal, and oblique angle is additionally provided at two trapezoidal base angles；It is described
Plate stack when every layer plate quantity be even number.
The present invention also provides the girders of the wind electricity blade obtained according to above-mentioned laying method.
The utility model has the advantages that
(1) plate construction selected of the present invention avoid plate form straight joint when stacking and reduce plate construction rigidity and
The problem of intensity, and be conducive to plate interlayer and form resin flow channel, infusion time is reduced, charging efficiency and effect are improved.
(2) method proposed by the present invention is first to position and be laid with core material, and then plate is successively laid with close to core material edge, this
Sample can guarantee that plate and core material edge are bonded enough to close, and not will cause the problem of plate misplaces.
(3) present invention, which solves plate heap poststack, to form bevel edge structure in plate construction edge, so that plate and core
There is the defects of rich resin and girder plate misplace risk in material interface, and the present invention is easy to implement, grasp convenient for worker
Make, the manufacturing speed of blade can be accelerated, improves production efficiency.
Detailed description of the invention
Fig. 1 is the sectional view of the parallelogram plate used in wind electricity blade production technology.
Fig. 2 is the structure type after parallelogram plate shown in FIG. 1 combination.
Fig. 3 is the structural schematic diagram that parallelogram plate shown in FIG. 1 is stacked in the first core material two sides.
Fig. 4 is the structural representation that the girder obtained after parallelogram plate shown in FIG. 1 stacks and shell are integrally perfused
Figure.
The first laying of the girder that Fig. 5 is obtained after stacking for parallelogram plate shown in FIG. 1 in girder mold
Form.
Second laying of the girder that Fig. 6 is obtained after stacking for parallelogram plate shown in FIG. 1 in girder mold
Form.
The third laying of the girder that Fig. 7 is obtained after stacking for parallelogram plate shown in FIG. 1 in girder mold
Form.
Fig. 8 is the sectional view of the trapezoidal plate used in wind electricity blade production technology.
Fig. 9 is the structure type after trapezoidal plate combination shown in Fig. 8.
Figure 10 is the structural schematic diagram that trapezoidal plate shown in Fig. 8 is stacked in the first core material two sides.
Figure 11 is the structural schematic diagram that the girder obtained after trapezoidal plate shown in Fig. 8 stacks and shell are integrally perfused.
The first layering type of the girder that Figure 12 is obtained after stacking for trapezoidal plate shown in Fig. 8 in girder mold.
Second layering type of the girder that Figure 13 is obtained after stacking for trapezoidal plate shown in Fig. 8 in girder mold.
The third layering type of the girder that Figure 14 is obtained after stacking for trapezoidal plate shown in Fig. 8 in girder mold.
Specific embodiment
Below in conjunction with drawings and examples, the following further describes the technical solution of the present invention.
In the production field of wind electricity blade, if girder or auxiliary beam knot of the plate being rectangle using section as blade
The material of structure can reduce the rigidity of structure and intensity of plate in the straight joint of rectangular plate heap poststack, formation.The present invention uses
Two kinds of plate constructions, section is respectively as shown in Fig. 1 and Fig. 8.The section of parallelogram plate 1 shown in FIG. 1 is in parallel
Quadrangle, and two angles on a wherein diagonal line for the parallelogram are additionally provided with oblique angle, after plate combines
Form resin flow channel.The section of trapezoidal plate 2 shown in Fig. 8 is trapezoidal, and is additionally provided at two trapezoidal base angles tiltedly
Angle, to form resin flow channel after plate combines.1 heap poststack of parallelogram plate shown in FIG. 1 is as shown in Figure 2.Shown in Fig. 8
2 heap poststack of trapezoidal plate (every layer of quantity is even number, the i.e. trapezoidal plate 2 of even number when trapezoidal plate 2 stacks as shown in Figure 9
It is combined).Both plate heap poststacks will form at plate construction edge shown in Fig. 2 11 or plate construction edge shown in Fig. 9
Bevel edge structure at 21.The structure of both plates have the following characteristics that (1) avoid material of rectangular channel stack when formed it is logical
The problem of stitching and reducing plate construction stiffness and strength；(2) its special plate construction is conducive to plate interlayer and forms resin stream
Road reduces infusion time, improves charging efficiency and effect.
It usually positions girder position first in production technology, when wind electricity blade laying and is laid with girder plate, re-lay
Edge core material, however, the stacked structure formed using above two plate, being laid with core material at its edge be occur the problem that
(1) there can be blind area when the core material at plate construction edge shown in Fig. 2 11 and at plate construction edge 21 shown in Fig. 9 is laid with, no
Can glued board structural edge 11 or plate construction edge 21 well, cause the gap of the edge core material and plate excessive,
The defects of rich resin is formed after perfusion；It (2) may when being laid with core material at plate construction edge 11 or plate construction edge 21
It causes girder plate to misplace, this is because positioning girder position when wind electricity blade laying first and being laid with girder plate, re-lays
Edge core material goes since plate construction edge laying core material needs to apply certain power jacking to plate side, may cause master
The dislocation of beam slab material.
Presence is laid with to solve the core material at plate construction edge shown in Fig. 2 11 and at plate construction edge 21 described in Fig. 9
Blind area causes rich pitch prob-lems and core material to be laid with the problem of may cause the dislocation of girder plate, and the invention proposes one kind to be directed to
(heap poststack will form at plate construction edge shown in Fig. 2 11 and plate shown in Fig. 9 for two kinds of plate stacked structures shown in Fig. 2 and Fig. 9
Bevel edge structure at structural edge 21) edge core material laying method, this method can make plate construction edge and core material very
Be bonded well, can solve sheet edge and core material gap it is excessive caused by rich resin defect the problems such as, and this method avoid
The problem of girder plate misplaces.
The present invention provides a kind of core material of the girder of wind electricity blade and the laying method of plate, and the girder includes first
Core material and plate, the laying method comprise the steps of: step (1), are first laid with the first core material, first core material is extremely
Few side has inclined-plane, and the bottom surface on the inclined-plane and first core material is at an acute angle；Step (2), then on the inclined-plane
Side is successively laid with plate, and the plate has inclined first side, the first side of the plate and the inclined-plane
Fitting.
The inclined-plane of first core material and the bottom surface of first core material are at an acute angle, are easy to observe when being laid with plate, can avoid
The scarf of first core material is at blind area, while convenient-laying edge core material.First position and be laid with the first core material, then plate close to
First core material edge is successively laid with, in such manner, it is possible to guarantee that plate and the first core material edge are bonded enough to close, and will not be made
The problem of misplacing at plate.
Laying method provided by the invention at least two ways may be implemented.
Mode one:
First core material is layed in the middle part of the girder, and the two sides of first core material all have described oblique
Face is laid with the plate in the two sides of first core material.
The plate that the present invention uses also has inclined second side, and the second side and the bottom surface of the plate are in
Acute angle.
It can also include step (3) as needed in paving mode one: after being laid with plate, continue in the outside of plate
It is laid with edge core material, edge core material is bonded with the second side of plate.
In paving mode one, the structure type of isosceles trapezoid is may be selected in the first core material, and right-angled trapezium may be selected in edge core material
Structure type.Edge core material is in a rectangular trapezoid, has the inclined side towards plate, enables the interface of core material and plate very
The defects of being bonded well, rich resin will not being caused there are excessive gap.
Paving mode one of the invention sees Fig. 6 or Figure 13: first be located among mold 5 is first laid in mold 5
Core material 3, the first core material 3 are in isosceles trapezoid, and two sides all have inclined-plane, then stack plate in the two sides of first core material 3,
It is laid with respectively in the two sides of the mold 5 later and is close to the edge core material 6 of the plate.
Mode two:
The unilateral side of first core material has the inclined-plane, and the plate is laid in the inclined-plane side of first core material
Material；The girder also includes edge core material, and laying method further includes step (3): the edge core material being layed in described
The outside of plate, and be bonded with the second side of the plate.
In paving mode two, the structure type of the first core material and the optional right-angled trapezium of edge core material.
Paving mode two of the invention sees Fig. 7 or Figure 14: being first laid in mold 5 and is located at the first of 5 side of mold
Core material 3, the first core material 3 is in a rectangular trapezoid, then stacks plate in 3 side of the first core material, is laid with is close to the plate later
Edge core material 6.
The plate is fiber-resin composite plate.
Laying method provided by the invention is not limited to Fig. 1 and two kinds of plate shown in Fig. 8, be also possible to other have incline
The plate construction form of prism.
Material of the plate and core material as the auxiliary beam of girder and/or rear of wind electricity blade.
Embodiment 1
The girder that wind electricity blade is made of section parallelogram plate 1 as shown in Figure 1, using laying of the invention
Mode one is laid with.The girder of wind electricity blade by muti-piece parallelogram plate 1 stacking form multilayered structure, then with core material
It is obtained after resin infusion.The structure type that 1 heap poststack of parallelogram plate is formed is as shown in Fig. 2, parallelogram plate 1
Heap poststack will form the edge to concave (the plate construction edge 11 of Fig. 2).
Referring to Fig. 3, positioning and being laid with the first core material 3 in blade shell first, 3 both sides of the first core material are then re-layed
Parallelogram plate 1.Parallelogram plate 1 is close to the inclined-plane of the first core material 3 when stacking.It is being laid with 3 liang of the first core material
When the parallelogram plate 1 on side, the number of plies of both sides plate need to be consistent, and first be laid with 3 one side first layer plate of the first core material,
3 another side first layer plate of the first core material is re-layed, 3 one side second layer plate of the first core material is then laid with, re-lays the first core
3 another side second layer plate of material is successively laid with plate in this approach.
Girder central block i.e. the first core material 3 is trapezoidal shape, and when laying first positions the first core material 3, in plate heap poststack, plate
Material position has been fixed, and edge core material and plate are easily able to fit closely.Girder is twin beams form.The method of embodiment 1 is applicable in
In the prefabricated situation of girder (as shown in Figure 5 and Figure 6).In Fig. 5, after the first core material 3 is laid in girder mold 5, two are re-layed
The parallelogram plate 1 on side.In Fig. 6, it should first position and be laid with the first core material 3, re-lay the girder plate on both sides, finally repave
If the edge core material 6 on both sides.As shown in figure 4, the method for embodiment 1 applies also for the case where 4 one perfusion of girder and shell.
Embodiment 2
Using the girder of trapezoidal plate 2 production wind electricity blade, still it is laid with using paving mode one of the invention.Wind
After the girder of electric blade is laid in corresponding mould by multi-sheets and core material, perfusion resin is made.The structure shape of trapezoidal plate 2
Formula is as shown in Figure 8.Structure that trapezoidal 2 heap poststack of plate is formed is as shown in figure 9, when trapezoidal plate 2 stacks, two blocks of adjacent trapezoidal plates
One piece in material 2 is oppositely positioned, and the one side that adjacent trapezoidal plate 2 is in contact is combined in the form of inlaying, and is successively superimposed.It is trapezoidal
2 heap poststack of plate will form the edge to concave (the plate construction edge 21 of Fig. 9).
The girder stacking form of embodiment 2 is as shown in Figure 10, positions and be laid with the first core material 3 in blade shell first,
Then the trapezoidal plate 2 on 3 both sides of the first core material is re-layed.
When being laid with the trapezoidal plate 2 on 3 both sides of the first core material, the number of plies of both sides plate need to be consistent, i.e., be first laid with the
One core material, 3 one side first layer plate re-lays 3 another side first layer plate of the first core material, is then laid with the first core material 3 on one side the
Two laminate materials re-lay 3 another side second layer plate of the first core material, are successively laid with plate in this approach.
Girder central block i.e. the first core material 3 is trapezoidal shape, and when laying first positions the first core material 3.Girder is twin beams form.
This method is suitable for the prefabricated situation of girder, (as shown in Figure 12 and Figure 13).In Figure 12, the first core is laid in girder mold 5
After material 3, the trapezoidal plate 2 on both sides is re-layed.In Figure 13, it should first position and be laid with the first core material 3, re-lay the girder plate on both sides
Material finally re-lays the edge core material 6 on both sides.As shown in figure 11, the method for embodiment 2 applies also for 4 one of girder and shell
The case where perfusion.
Embodiment 3
It is laid with using paving mode one, and the implementation steps that girder and shell are integrally perfused are as follows:
1. the size in the first trapezoidal core material section among plate, including upper and lower side length are determined according to blade design, it is thick
Degree and angle；
2. the positioning of girder center line is determined in blade shell according to blade design；
3. be laid with the first core material in the housing according to the positioning of shell middle girder center line, make the center of the first core material with
The center line of girder is aligned；
4. when plate is laid with, the plate number of plies on the first core material both sides keeps one the first core material both sides are laid with girder plate
It causes, i.e., is first laid with the first layer plate on first core material one side, re-lays the first layer plate of the first core material another side, be then laid with
The second layer plate on first core material one side re-lays the second layer plate of the first core material another side, has successively been laid in this approach
The plate on the first core material both sides；
5. being laid with sheet edge others core material；
6. completing other layings of shell, last girder and shell one form.
Embodiment 4
Fig. 7 or Figure 14 is please referred to, is laid with using paving mode two of the invention.
The shape and size for being located at first core material 3 and edge core material 6 on both sides are determined according to blade design, including upper following
It is long, thickness and angle；
2. the sectional dimension of girder mold is determined according to the girder section strip width of blade design and the size of core material,
Manufacture corresponding girder mold；
3. being adjacent to mold right side edge on girder mold first is laid with the first core material 3；
4. the first side of plate is adjacent to the inclined-plane of the first core material 3, it is successively laid with girder plate；
5. being adjacent to the second side of plate, it is laid with edge core material 6；
6. carrying out resin infusion in girder mold 5, precast main beam is formed after perfusion demoulding.
In general, using plate construction as when girder, first positioning and lay plate stacked structure, then spread on plate both sides
If core material, at this point, when core material at plate construction edge shown in Fig. 2 11 and at plate construction edge 21 shown in Fig. 9 is laid with and core
Material can lead to problems such as to cause rich resin defect due to gap is excessive in the presence of because fitting is bad, or cause plate since core material laying is improper
The problem of material misplaces.And in method proposed by the present invention, core material is first positioned and is laid with, then plate is successively spread close to core material edge
If in such manner, it is possible to guarantee that plate and core material edge are bonded enough to close, and not will cause the problem of plate misplaces.This hair
Bright to solve the plate of two kinds of plates or other section forms shown in application drawing 1 and Fig. 8, heap poststack will form plate shown in Fig. 2
Bevel edge structure at structural edge 11 and at plate construction edge 21 shown in Fig. 9 so that manufacture wind electricity blade girder plate and
There is the defects of rich resin risk in core material interface, and the present invention is easy to implement, is convenient for worker operation, can accelerate leaf
The manufacturing speed of piece improves production efficiency.
It is discussed in detail although the contents of the present invention have passed through above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read above content, for of the invention
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of core material of girder of wind electricity blade and the laying method of plate, which is characterized in that the girder includes first
Core material and plate, the laying method comprise the steps of:
Step (1), is laid with the first core material, and the first core material at least side has inclined-plane, the inclined-plane and described first
The bottom surface of core material is at an acute angle；
Step (2), the side on the inclined-plane are successively laid with plate, and the plate has inclined first side, the plate
The first side of material and inclined-plane fitting.
2. the core material of the girder of wind electricity blade according to claim 1 and the laying method of plate, which is characterized in that described
Plate also there is inclined second side, the second side and the bottom surface of the plate are at an acute angle.
3. the core material of the girder of wind electricity blade according to claim 2 and the laying method of plate, which is characterized in that
In step (1), first core material is layed in the middle part of the girder, and the two sides of first core material all have institute
The inclined-plane stated；
In step (2), the plate is laid in the two sides of first core material.
4. the core material of the girder of wind electricity blade according to claim 3 and the laying method of plate, which is characterized in that
The girder also includes edge core material；
The laying method also includes step (3): the edge core material is layed in the outside of the plate, and with it is described
The second side of plate is bonded.
5. the core material of the girder of wind electricity blade according to claim 4 and the laying method of plate, which is characterized in that described
The first core material it is trapezoidal, the edge core material is in a rectangular trapezoid.
6. the core material of the girder of wind electricity blade according to claim 2 and the laying method of plate, which is characterized in that
In step (1), the unilateral side of first core material has the inclined-plane；
In step (2), the plate is laid in the inclined-plane side of first core material；
The girder also includes edge core material；The laying method also includes step (3): the edge core material is laid with
It is bonded in the outside of the plate, and with the second side of the plate.
7. the core material of the girder of wind electricity blade according to claim 6 and the laying method of plate, which is characterized in that described
The first core material and the edge core material it is in a rectangular trapezoid.
8. the core material of the girder of wind electricity blade according to claim 1 and the laying method of plate, which is characterized in that described
Plate section parallelogram, and two angles on a wherein diagonal line for the parallelogram are additionally provided with tiltedly
Angle.
9. the core material of the girder of wind electricity blade according to claim 1 and the laying method of plate, which is characterized in that described
Plate section it is trapezoidal, and be additionally provided with oblique angle at two trapezoidal base angles；Every layer when the plate stacks
Plate quantity is even number.
10. a kind of girder for the wind electricity blade that laying method according to claim 1 to 9 obtains.
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| CN201910791222.2A CN110500242B (en) | 2019-08-26 | 2019-08-26 | Main beam of wind power blade and method for laying core material and plate of main beam |
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| CN201910791222.2A CN110500242B (en) | 2019-08-26 | 2019-08-26 | Main beam of wind power blade and method for laying core material and plate of main beam |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111255639A (en) * | 2020-01-21 | 2020-06-09 | 上海电气风电集团股份有限公司 | Bearing structural member for wind power blade and preparation method thereof |
| CN113002015A (en) * | 2021-02-26 | 2021-06-22 | 上海电气风电集团股份有限公司 | Structure of wind power blade trailing edge core material and preparation method thereof |
| CN113232321A (en) * | 2021-03-29 | 2021-08-10 | 上海电气风电集团股份有限公司 | Wind power blade shell core material prefabricating process method and shell core material prefabricating member |
| CN113459537A (en) * | 2021-08-09 | 2021-10-01 | 上海电气风电集团股份有限公司 | Laying method of wind power blade trailing edge auxiliary beam |
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| CN111255639A (en) * | 2020-01-21 | 2020-06-09 | 上海电气风电集团股份有限公司 | Bearing structural member for wind power blade and preparation method thereof |
| CN113002015A (en) * | 2021-02-26 | 2021-06-22 | 上海电气风电集团股份有限公司 | Structure of wind power blade trailing edge core material and preparation method thereof |
| CN113232321A (en) * | 2021-03-29 | 2021-08-10 | 上海电气风电集团股份有限公司 | Wind power blade shell core material prefabricating process method and shell core material prefabricating member |
| CN113459537A (en) * | 2021-08-09 | 2021-10-01 | 上海电气风电集团股份有限公司 | Laying method of wind power blade trailing edge auxiliary beam |
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