CN109113938A - The segmented pitch variable bearings of Wind turbines reinforce flange and its aerial installation method - Google Patents
The segmented pitch variable bearings of Wind turbines reinforce flange and its aerial installation method Download PDFInfo
- Publication number
- CN109113938A CN109113938A CN201811178357.3A CN201811178357A CN109113938A CN 109113938 A CN109113938 A CN 109113938A CN 201811178357 A CN201811178357 A CN 201811178357A CN 109113938 A CN109113938 A CN 109113938A
- Authority
- CN
- China
- Prior art keywords
- hanging basket
- pitch variable
- variable bearings
- flange
- cushion block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009434 installation Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000012423 maintenance Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 241000233855 Orchidaceae Species 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 2
- 230000007812 deficiency Effects 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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
-
- 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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/10—Assembly of wind motors; Arrangements for erecting wind motors
-
- 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
-
- 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
Landscapes
- 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 discloses a kind of segmented pitch variable bearings of Wind turbines to reinforce flange and its aerial installation method, the pitch variable bearings are reinforced flange and are made of two flange sections and cushion block, two flange sections are arc section, sliceable is a whole coil structures, the both ends of two flange sections sink to having the thickness sinking position consistent with cushion block, after two flange section splicings, its respective sinking position can combine the accommodating space for being configured to accommodating cushion block, the shape size of accommodating space matches with cushion block, bolt hole is provided on two flange sections and cushion block, and the pitch variable bearings bolt hole of bolt hole and Wind turbines, blade bolt hole is concentric and diameter is identical.Disassembly pitch variable bearings and blade are not required to using structure of the invention and method, can be installed in high-altitude, using the cantilever crane and hanging basket of nacelle top, be not required to large-scale crane, reinforce flange in high-altitude, that is, mountable pitch variable bearings, expense is low.
Description
Technical field
The present invention relates to the technical field of Wind turbines, the segmented pitch variable bearings for referring in particular to a kind of Wind turbines add
Strong flange and its aerial installation method.
Background technique
Known in the industry, wind generating set pitch control bearing outer ring is connect with blade, and pitch variable bearings inner ring is connect with wheel hub, is
The fatigue behaviour for improving blade root bolt needs to install pitch variable bearings in pitch variable bearings outer rings and reinforces flange.General reinforcement
Orchid is whole coil structures, and installation pitch variable bearings, which reinforce flange, to dismantle blade and pitch variable bearings, since installation site is higher, needs benefit
Blade is hung down with large-scale crane, it is costly.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology and deficiency, proposes a kind of segmented of Wind turbines
Pitch variable bearings reinforce flange and its aerial installation method, are not required to disassembly pitch variable bearings and blade, can install in high-altitude, utilize machine
Cantilever crane and hanging basket at the top of cabin, are not required to large-scale crane, reinforce flange in high-altitude, that is, mountable pitch variable bearings, expense is low.
To achieve the above object, technical solution provided by the present invention is as follows:
The segmented pitch variable bearings of Wind turbines reinforce flange, by first flange section, second flange section, the first cushion block and
Second cushion block composition, wherein the first flange section and second flange section are arc section, they can be spliced into a whole circle
Structure, while the first sinking position that one end sinking of the first flange section has depth consistent with the first pad thickness, it is another
One end of the second sinking position that one end sinking has depth consistent with the second pad thickness, the second flange section sinks to having depth
The third sinking position consistent with the first pad thickness, other end sinking have fourth consistent with the second pad thickness of depth
After sinking position, the first flange section and second flange section are spliced into whole circle, the first sinking position and third sinking position being capable of groups
The accommodating space constituted for accommodating the first cushion block is closed, the second sinking position and the 4th sinking position can combine composition for accommodating
The accommodating space of second cushion block, and the shape size of the accommodating space matches with respective cushion block；The first flange section,
Bolt hole, and the pitch variable bearings spiral shell of the bolt hole and Wind turbines are provided on two flange sections, the first cushion block and the second cushion block
Keyhole, blade bolt hole is concentric and diameter is identical.
Further, first cushion block and the second cushion block are arc section.
The segmented pitch variable bearings of above-mentioned Wind turbines reinforce the aerial installation method of flange, specific as follows:
This method needs to use the cantilever crane and hanging basket of the nacelle top of Wind turbines, wherein the cantilever crane is solid
It is scheduled on the platform of nacelle top, hanging basket can be moved to safely to nacelle top and pitch variable bearings reinforce the installation site of flange；
Maintenance personnel can dismantle installation pitch variable bearings in hanging basket and connect studs with blade, and can fill by the way that hanging basket is fixed
It sets and is connected and fixed with pitch variable bearings；
The aerial installation method, comprising the following steps:
1) adjustment blade is in state downwards: wheel rotation to blade being in state downwards and locks impeller；
2) pitch variable bearings reinforce flange and material lifting: pitch variable bearings being reinforced flange, tool and supplies and is put into and hangs
Basket, promoting cantilever crane makes lifting of hanging basket to cabin altitude；
3) maintenance personnel enters hanging basket: continuing to lift up above hanging basket to engineroom flat, the cabin that hanging basket is reliably fixed is put down
On platform, maintenance personnel enters hanging basket, and hanging basket is adjusted to pitch variable bearings the installation site for reinforcing flange by adjustment cantilever crane；
4) dismantle a part of studs that original pitch variable bearings are connect with blade: installation hanging basket fixing device makes hanging basket
It is reliably fixed with pitch variable bearings, fixed point is connect by bolt with pitch variable bearings, dismantles one that pitch variable bearings are connect with blade
Divide studs；
5) first flange section is installed: the bolt hole of first flange section is directed at pitch variable bearings outer ring bolt hole, it will be original short
Studs change long studs into, fastening nut installs hanging basket fixing device again, keeps hanging basket reliable with pitch variable bearings
Fixed, fixed point is connect by bolt with first flange section, and hanging basket fixing device is dismantled after the completion of all bolt fastenings；
6) install second flange section: adjustment cantilever crane hanging basket is adjusted to the installation site of the impeller other side, using with
The same method of step 5) installs second flange section；
7) the first and second cushion block is installed: after the first and second flange section is installed, installing the first and second cushion block respectively, and
Two-stage method orchid section is connected and fixed by bolt afterwards；
8) tool material hangs lower Wind turbines: after entire pitch variable bearings reinforcement flange is installed, hanging basket is moved to cabin
Top is fixed, and maintenance personnel is from hanging basket safety moving to nacelle top；Old studs, tool are hung to tower using hanging basket
Base.
Compared with prior art, the present invention have the following advantages that with the utility model has the advantages that
It is not required to disassembly pitch variable bearings and blade, pitch variable bearings can be installed in high-altitude and reinforce flange, utilize nacelle top
Cantilever crane and hanging basket are not required to large-scale crane, and expense is low, and small-sized crane is easy for installation.
Detailed description of the invention
Fig. 1 is that pitch variable bearings of the invention reinforce flange installation diagram.
Fig. 2 is that pitch variable bearings of the invention reinforce flange exploded view.
Fig. 3 is the structural schematic diagram of wherein one-stage process orchid section.
Fig. 4 is the structural schematic diagram of one of cushion block.
Fig. 5 is that pitch variable bearings of the invention reinforce flange scheme of installation.
Fig. 6 is the scheme of installation of cantilever crane, hanging basket and pitch variable bearings.
Fig. 7 is the schematic diagram of hanging basket fixing device.
Specific embodiment
The present invention is further explained in the light of specific embodiments.
As shown in Figures 1 to 5, the segmented pitch variable bearings of Wind turbines provided by the present embodiment reinforce flange, by
First flange section 1, second flange section 2, the first cushion block 3 and the second cushion block 4 composition, wherein the first flange section and the second method
Blue section is arc section, they can be spliced into a whole coil structures, while one end of the first flange section 1 sinks to having depth
The first sinking position 5 consistent with 3 thickness of the first cushion block, other end sinking have depth consistent with 4 thickness of the second cushion block
Second sinking position 6, the third sinking position that one end sinking of the second flange section 2 has depth consistent with 3 thickness of the first cushion block
7, the 4th sinking position 8 that other end sinking has depth consistent with 4 thickness of the second cushion block, the first flange section 1 and second
After flange section 2 is spliced into whole circle, the first sinking position 5 and third sinking position 7 can combine the appearance for being configured to the first cushion block 3 of accommodating
Between emptying, the second sinking position 6 and the 4th sinking position 8 can combine the accommodating space for being configured to the second cushion block 4 of accommodating, and described
The shape size of accommodating space matches with respective cushion block, it is described first pad, 3 and second cushion block 4 also be arc section；In addition, institute
State and be provided with bolt hole 9 on first flange section 1, second flange section 2, the first cushion block 3 and the second cushion block 4, and the bolt hole 9 with
10 bolt hole of pitch variable bearings of Wind turbines, blade bolt hole is concentric and diameter is identical.
Reinforce the aerial installation method of flange for the above-mentioned segmented pitch variable bearings of the present embodiment below, concrete condition is as follows:
This method needs to use the cantilever crane 11 and hanging basket 12 of the nacelle top of Wind turbines, wherein the cantilever crane
Machine 11 is fixed on the platform of nacelle top, 12 safety of hanging basket can be moved to nacelle top and pitch variable bearings reinforce the peace of flange
Holding position (as shown in Figure 6)；The shape of hanging basket 12 is semicircle, and maintenance personnel can dismantle 1/2 circle variable pitch of installation in hanging basket 12
Bearing 10 connect studs with blade, and can be connect by hanging basket fixing device 13 (as shown in Figure 7) with pitch variable bearings 10
It is fixed.
It is as follows that the step of pitch variable bearings reinforce flange, is installed in high-altitude:
1) adjustment blade is in state downwards: wheel rotation to blade being in state downwards and locks impeller；
2) pitch variable bearings reinforce flange and material lifting: pitch variable bearings being reinforced flange, tool and supplies and is put into and hangs
Basket, promoting cantilever crane makes lifting of hanging basket to cabin altitude；
3) maintenance personnel enters hanging basket: continuing to lift up above hanging basket to engineroom flat, the cabin that hanging basket is reliably fixed is put down
On platform, maintenance personnel enters hanging basket, and hanging basket is adjusted to pitch variable bearings the installation site for reinforcing flange, such as schemed by adjustment cantilever crane
Shown in 6；
4) dismantle the 1/2 circle studs that original pitch variable bearings are connect with blade: installation hanging basket fixing device makes hanging basket
It is reliably fixed with pitch variable bearings, fixed point is connect by bolt with pitch variable bearings, dismantles one that pitch variable bearings are connect with blade
Divide studs；
5) first flange section is installed: the bolt hole of first flange section is directed at pitch variable bearings outer ring bolt hole, it will be original short
Studs change long studs into, fastening nut installs hanging basket fixing device again, keeps hanging basket reliable with pitch variable bearings
Fixed, fixed point is connect by bolt with first flange section, and hanging basket fixing device is dismantled after the completion of all bolt fastenings；
6) install second flange section: adjustment cantilever crane hanging basket is adjusted to the installation site of the impeller other side, using with
The same method of step 5) installs second flange section；
7) the first and second cushion block is installed: after the first and second flange section is installed, installing the first and second cushion block respectively, and
Two-stage method orchid section is connected and fixed by bolt afterwards；
8) tool material hangs lower Wind turbines: after entire pitch variable bearings reinforcement flange is installed, hanging basket is moved to cabin
Top is fixed, and maintenance personnel is from hanging basket safety moving to nacelle top；The materials such as old studs, tool are hung using hanging basket
To column foot.
Embodiment described above is only the preferred embodiments of the invention, and but not intended to limit the scope of the present invention, therefore
All shapes according to the present invention change made by principle, should all be included within the scope of protection of the present invention.
Claims (3)
1. the segmented pitch variable bearings of Wind turbines reinforce flange, it is characterised in that: by first flange section, second flange section,
First cushion block and the second cushion block composition, wherein the first flange section and second flange section are arc section, they can splice
For a whole coil structures, while one end of the first flange section sinks under have depth consistent with the first pad thickness first
Heavy position, the second sinking position that other end sinking has depth consistent with the second pad thickness, one end of the second flange section
Sink the third sinking position for having depth consistent with the first pad thickness, and other end sinking has depth and the second pad thickness phase
After consistent 4th sinking position, the first flange section and second flange section are spliced into whole circle, under the first sinking position and third
Heavy position can combine the accommodating space constituted for accommodating the first cushion block, and the second sinking position and the 4th sinking position can combine structure
At the accommodating space for accommodating the second cushion block, and the shape size of the accommodating space matches with respective cushion block；Described
It is provided with bolt hole on one flange section, second flange section, the first cushion block and the second cushion block, and the bolt hole and Wind turbines
Pitch variable bearings bolt hole, blade bolt hole is concentric and diameter is identical.
2. a kind of segmented pitch variable bearings of Wind turbines according to claim 1 reinforce flange, it is characterised in that: institute
Stating the first cushion block and the second cushion block is arc section.
3. a kind of segmented pitch variable bearings of Wind turbines as claimed in claim 1 or 2 reinforce the aerial installation method of flange,
Be characterized in that: this method needs to use the cantilever crane and hanging basket of the nacelle top of Wind turbines, wherein the cantilever crane is solid
It is scheduled on the platform of nacelle top, hanging basket can be moved to safely to nacelle top and pitch variable bearings reinforce the installation site of flange；
Maintenance personnel can dismantle installation pitch variable bearings in hanging basket and connect studs with blade, and can fill by the way that hanging basket is fixed
It sets and is connected and fixed with pitch variable bearings；
The aerial installation method, comprising the following steps:
1) adjustment blade is in state downwards: wheel rotation to blade being in state downwards and locks impeller；
2) pitch variable bearings reinforce flange and material lifting: pitch variable bearings being reinforced flange, tool and supplies and are put into hanging basket, are mentioned
Rising cantilever crane makes lifting of hanging basket to cabin altitude；
3) maintenance personnel enters hanging basket: it continues to lift up above hanging basket to engineroom flat, on the engineroom flat that hanging basket is reliably fixed,
Maintenance personnel enters hanging basket, and hanging basket is adjusted to pitch variable bearings the installation site for reinforcing flange by adjustment cantilever crane；
4) dismantle a part of studs that original pitch variable bearings are connect with blade: installation hanging basket fixing device makes hanging basket and becomes
Paddle shaft, which is held, to be reliably fixed, and fixed point is connect by bolt with pitch variable bearings, and disassembly pitch variable bearings are connect a part of double with blade
Header stud；
5) first flange section is installed: the bolt hole of first flange section is directed at pitch variable bearings outer ring bolt hole, by original short pair
Header stud changes long studs into, and fastening nut installs hanging basket fixing device again, keeps hanging basket and pitch variable bearings reliably solid
Fixed, fixed point is connect by bolt with first flange section, and hanging basket fixing device is dismantled after the completion of all bolt fastenings；
6) install second flange section: adjustment cantilever crane adjusts hanging basket to the installation site of the impeller other side, use and step
5) same method installs second flange section；
7) the first and second cushion block is installed: after the first and second flange section is installed, installing the first and second cushion block respectively, then leads to
Bolt is crossed to be connected and fixed two-stage method orchid section；
8) tool material hangs lower Wind turbines: after entire pitch variable bearings reinforcement flange is installed, hanging basket is moved to nacelle top
Fixed, maintenance personnel is from hanging basket safety moving to nacelle top；Old studs, tool are hung to column foot using hanging basket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178357.3A CN109113938B (en) | 2018-10-10 | 2018-10-10 | Segmented variable-pitch bearing reinforcing flange for wind turbine generator and air installation method of segmented variable-pitch bearing reinforcing flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178357.3A CN109113938B (en) | 2018-10-10 | 2018-10-10 | Segmented variable-pitch bearing reinforcing flange for wind turbine generator and air installation method of segmented variable-pitch bearing reinforcing flange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109113938A true CN109113938A (en) | 2019-01-01 |
| CN109113938B CN109113938B (en) | 2024-03-15 |
Family
ID=64857879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811178357.3A Active CN109113938B (en) | 2018-10-10 | 2018-10-10 | Segmented variable-pitch bearing reinforcing flange for wind turbine generator and air installation method of segmented variable-pitch bearing reinforcing flange |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113938B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854462A (en) * | 2019-03-11 | 2019-06-07 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind-driven generator and its blade pitch device |
| CN113931802A (en) * | 2021-09-24 | 2022-01-14 | 广东水电二局股份有限公司 | High-altitude fan blade replacement method based on cooperation of double cranes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007008166A1 (en) * | 2007-02-14 | 2008-08-21 | Nordex Energy Gmbh | Wind energy plant with a pitch turning connection |
| CN103161662A (en) * | 2011-12-13 | 2013-06-19 | 新疆金风科技股份有限公司 | Variable pitch limit structure of wind turbine blade |
| CN209041031U (en) * | 2018-10-10 | 2019-06-28 | 明阳智慧能源集团股份公司 | A kind of segmented pitch variable bearings reinforcement flange for Wind turbines |
-
2018
- 2018-10-10 CN CN201811178357.3A patent/CN109113938B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007008166A1 (en) * | 2007-02-14 | 2008-08-21 | Nordex Energy Gmbh | Wind energy plant with a pitch turning connection |
| CN103161662A (en) * | 2011-12-13 | 2013-06-19 | 新疆金风科技股份有限公司 | Variable pitch limit structure of wind turbine blade |
| CN209041031U (en) * | 2018-10-10 | 2019-06-28 | 明阳智慧能源集团股份公司 | A kind of segmented pitch variable bearings reinforcement flange for Wind turbines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854462A (en) * | 2019-03-11 | 2019-06-07 | 中国船舶重工集团海装风电股份有限公司 | A kind of wind-driven generator and its blade pitch device |
| CN113931802A (en) * | 2021-09-24 | 2022-01-14 | 广东水电二局股份有限公司 | High-altitude fan blade replacement method based on cooperation of double cranes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109113938B (en) | 2024-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10865077B2 (en) | System for assembling/disassembling windmills | |
| EP3019433B1 (en) | Assembly and method for lifting loads | |
| TWI576510B (en) | Method of and apparatus for fitting a rotor of a wind power installation | |
| US9821417B2 (en) | System and method for replacing a pitch bearing | |
| CN108700024B (en) | Method for mounting or dismounting wind turbine components of a multi-rotor wind turbine | |
| CN103443450B (en) | Wind turbine blade bearing detaching device and method | |
| EP3394427B1 (en) | Methods for mounting or dismounting a wind turbine component of a multirotor wind turbine | |
| CN102192111B (en) | Installation method of blades of offshore wind turbine | |
| WO2016007241A1 (en) | Tall wind turbine tower erection with climbing crane | |
| EP3091223B1 (en) | Up-tower suspension system for a wind turbine rotor blade | |
| CN106586811B (en) | Lifting equipment for supporting patient with burn and lifting turn-over method for concrete tower | |
| US9909561B2 (en) | Rotor assembly for a wind turbine and method for mounting a blade to the rotor assembly | |
| CN109113938A (en) | The segmented pitch variable bearings of Wind turbines reinforce flange and its aerial installation method | |
| CN209041031U (en) | A kind of segmented pitch variable bearings reinforcement flange for Wind turbines | |
| BR102017003456A2 (en) | CONCRETE TOWER MANUFACTURING PROCESS FOR WIND TURBINES AND CONCRETE TOWER FOR WIND TURBINES | |
| CN103726992B (en) | The firm blade draw piece of tower crane type Large Efficient wind-driven generator and installation method | |
| EP3167186A1 (en) | Tall wind turbine tower erection with climbing crane | |
| CN207229306U (en) | The dual-purpose tower of one frame | |
| CN205973583U (en) | Flip -chip of assembled steel board cabin is with hoist and mount subassembly | |
| CN205916899U (en) | Take suspender tightening mechanism's fan blade hoist support | |
| CN220415584U (en) | Wind driven generator base | |
| CN214092144U (en) | Impeller assembling and fixing device of wind generating set | |
| CN209469537U (en) | The anchoring tower segments and concrete tower of concrete tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |