CN219366226U - System for change aerogenerator blade based on a plurality of connecting rods - Google Patents
System for change aerogenerator blade based on a plurality of connecting rods Download PDFInfo
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- CN219366226U CN219366226U CN202321001448.6U CN202321001448U CN219366226U CN 219366226 U CN219366226 U CN 219366226U CN 202321001448 U CN202321001448 U CN 202321001448U CN 219366226 U CN219366226 U CN 219366226U
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- hub
- pair
- wire rope
- connecting rods
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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
Abstract
The utility model provides a system for replacing a wind driven generator blade based on a plurality of connecting rods, which comprises a blade root lifting appliance, a hub lifting appliance, a pulley block, a steel wire rope, a hub guiding mechanism, a cabin guiding mechanism and a power unit, wherein the blade root lifting appliance is arranged at the root of the blade, the hub lifting appliance is arranged at the hub, the pulley block and the steel wire rope are connected with the blade root lifting appliance and the hub lifting appliance, the hub guiding mechanism is arranged at the hub, the cabin guiding mechanism is arranged in the cabin, and the power unit is arranged in the cabin; one end of the steel wire rope is fixed on the pulley block, and the other end of the steel wire rope sequentially bypasses the hub guide mechanism and the cabin guide mechanism and is connected to the power unit; the hub guiding mechanism comprises a first connecting rod and a second connecting rod which are sequentially and alternately connected in a rotating way so as to bear and guide the steel wire rope; the power unit is adapted to tighten or release the wire rope to hoist or lower the blade. Therefore, the blade replacement can be completed without using large hoisting equipment, and the device has the advantages of low hoisting cost, small occupied area, little greening damage, high response speed and the like, and is particularly suitable for high-tower fans, offshore fans and fans in remote areas with scarcity of large cranes.
Description
Technical Field
The utility model belongs to the technical field of wind power generation, and particularly relates to a system for replacing wind power generator blades based on a plurality of connecting rods.
Background
With the increasing installed capacity of wind turbines and the year-by-year growth of service lives of wind turbines, more and more units need blade replacement. At present, a general fan adopts a large-sized automobile crane to replace blades, a crawler crane is required to be used for replacing blades for a large megawatt high-tower fan, and a landing leg ship is required to be used for replacing blades for an offshore wind driven generator. However, the use of large hoisting equipment not only generates high hoisting costs, but also is subject to environmental conditions.
Disclosure of Invention
The utility model provides a system for replacing blades of a wind driven generator based on a plurality of connecting rods, which can realize the replacement of the blades without using large hoisting equipment, has the advantages of low hoisting cost, small occupied area, little greening damage, high response speed and the like, and is particularly suitable for high-tower fans, offshore fans and fans in remote areas with scarcity of large cranes.
In order to achieve the above purpose, the present utility model provides the following technical solutions.
A system for replacing wind turbine blades based on a plurality of connecting rods, the system comprising a tower fixed on the ground, a nacelle mounted on top of Yu Datong, a hub mounted on the nacelle, and blades mounted on the hub, the system comprising a blade root sling mounted on the root of the blade, a hub sling mounted on the hub, a pulley block and a wire rope connecting the blade root sling and the hub sling, a hub guiding mechanism mounted on the hub, a nacelle guiding mechanism mounted inside the nacelle, and a power unit; one end of the steel wire rope is fixed on the pulley block, and the other end of the steel wire rope sequentially bypasses the hub guide mechanism and the cabin guide mechanism and is connected to the power unit; the hub guiding mechanism comprises a first connecting rod and a second connecting rod which are sequentially and alternately connected in a rotating way so as to bear and guide the steel wire rope; the power unit is adapted to tighten or release the wire rope to hoist or lower the blade.
Optionally, the pulley block comprises at least one fixed pulley mounted on the hub sling and at least one movable pulley mounted on the blade root sling; the wire rope is fixed to the fixed pulley or the movable pulley through one end thereof, and is connected to the hub guiding mechanism after bypassing the pulley block.
Optionally, the hub guiding mechanism further comprises a rotation connecting mechanism for rotationally connecting the first connecting rod and the second connecting rod; the first connecting rod comprises a pair of outer connecting rods; the second connecting rod comprises a pair of inner connecting rods; the outer connecting rods are positioned outside the inner connecting rods; the rotary connecting mechanism comprises a connecting shaft, a rolling bearing and a pair of fasteners; the rolling bearing is arranged between the inner sides of the pair of inner connecting rods and is suitable for bearing and guiding the steel wire rope; the connecting shaft passes through the pair of outer connecting rods, the pair of inner connecting rods and the rolling bearing, and the two ends of the connecting shaft extend to the outer sides of the pair of outer connecting rods respectively; a pair of fasteners are located outside the pair of outer connecting rods and are fastened to the ends of the connecting shaft, respectively.
Optionally, the hub guiding mechanism further comprises a hook body positioned at the front ends of the first connecting rod and the second connecting rod which are connected in an alternating rotating way; the hook body is fixed at the opening of the front end of the hub and is rotationally connected with the first connecting rod at the rear end of the hook body.
Optionally, the hook body and the first connecting rod are rotationally connected through a rotational connecting mechanism; the hook body comprises a pair of hook pieces; the rolling bearing is arranged between the inner sides of the pair of hooks and is suitable for bearing and guiding the steel wire rope; the connecting shaft passes through the pair of outer connecting rods, the pair of hooks and the rolling bearing, and the two ends of the connecting shaft respectively extend to the outer sides of the pair of outer connecting rods; a pair of fasteners are located outside the pair of outer connecting rods and are fastened to the ends of the connecting shaft, respectively.
Optionally, the hub guiding mechanism further comprises a tensioning mechanism positioned at the rear ends of the first connecting rod and the second connecting rod which are connected in an alternating rotating way; one end of the tensioning mechanism is connected to the second connecting rod at the front end of the tensioning mechanism, and the other end of the tensioning mechanism is connected to the fan structure between the hub and the engine room.
Optionally, the system further comprises a hub internal guide wheel mounted inside the hub; the inside leading wheel of wheel hub is suitable for guiding the wire rope that comes out from the assembly pulley wheel hub guiding mechanism.
Optionally, the nacelle guiding mechanism comprises a nacelle internal guiding wheel mounted inside the nacelle; the cabin interior guide wheel is adapted to guide the wire rope coming out of the hub guide mechanism to the power unit.
Optionally, the power unit is fixed to the bottom of the tower or to the interior of the nacelle.
Optionally, the power unit comprises a hoist or elevator.
Compared with the prior art, the technical scheme of the embodiment of the utility model has the beneficial effects.
For example, the utility model can realize blade replacement without using large hoisting equipment, has the advantages of low hoisting cost, small occupied area, little greening damage, high response speed and the like, and is particularly suitable for high-tower fans, offshore fans and fans in remote areas with scarcity of large cranes.
For another example, the utility model can guide the steel wire rope to the cabin or the ground by arranging the guide mechanism so as to ensure enough space for installing the large power unit, thereby realizing the purpose of replacing the large blade.
For example, the utility model does not need to open holes on the hubcap, all equipment enters and exits the engine room through the hanging holes of the fan, and meanwhile, the equipment can be carried by fully utilizing the crane of the fan, thereby saving the operation cost and improving the operation efficiency.
Drawings
FIG. 1 is a schematic diagram of a wind turbine in an embodiment of the present utility model;
FIG. 2 is a first schematic illustration of a system for replacing a wind turbine blade based on a plurality of connecting rods in an embodiment of the utility model;
FIG. 3 is a second schematic view of a system for replacing a wind turbine blade based on a plurality of connecting rods in an embodiment of the utility model;
FIG. 4 is a third schematic view of a system for replacing a wind turbine blade based on a plurality of connecting rods in an embodiment of the utility model;
FIG. 5 is a fourth schematic view of a system for replacing a wind turbine blade based on a plurality of connecting rods in an embodiment of the utility model;
FIG. 6 is a first schematic illustration of a hub guiding mechanism in accordance with an embodiment of the present utility model;
FIG. 7 is a second schematic view of a hub guiding mechanism in accordance with an embodiment of the present utility model;
FIG. 8 is a third schematic view of a hub guiding mechanism in accordance with an embodiment of the utility model;
FIG. 9 is a fourth schematic view (cross-sectional view) of a hub guiding mechanism in accordance with an embodiment of the utility model;
FIG. 10 is a schematic illustration of a power unit in an embodiment of the utility model.
Reference numerals illustrate:
11. a tower; 12. A nacelle; 13. A hub;
14. a blade; 21. Blade root sling; 211. A movable pulley;
22. a hub sling; 221. A fixed pulley; 23. A wire rope;
24. a hub guiding mechanism; 241. A first connecting rod; 241a and 241b, an outer connecting rod;
242. a second connecting rod; 242a and 242b, inner connecting rods; 243. A rotary connection mechanism;
243a, a connecting shaft; 243b, rolling bearings; 243c and 243d, fasteners;
244. a hook body; 244a and 244b, hooks; 245. A tensioning mechanism;
246. a guiding wheel inside the hub; 25. a nacelle guide mechanism; 26. A power unit.
Detailed Description
In order to make the objects, features and advantageous effects of the present utility model more comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the following detailed description is merely illustrative of the utility model, and not restrictive of the utility model. Moreover, the use of the same, similar reference numbers in the figures may indicate the same, similar elements in different embodiments, and descriptions of the same, similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc. may be omitted.
Referring to fig. 1 to 10, an embodiment of the present utility model provides a system for replacing a wind turbine blade based on a plurality of connection rods.
Specifically, the wind power generator may include a tower 11 fixed to the ground, a nacelle 12 mounted on top of the tower 11, a hub 13 mounted on the nacelle 12, and blades 14 mounted on the hub 13.
In particular implementations, the multiple connection rod based system for replacing a wind turbine blade may include a blade root sling 21 mounted to the root of the blade 14, a hub sling 22 mounted to the hub 13, pulley blocks and wire ropes 23 connecting the blade root sling 21 and the hub sling 22, a hub guiding mechanism 24 mounted to the hub 13, a nacelle guiding mechanism 25 mounted inside the nacelle 12, and a power unit 26. Wherein one end of the wire rope 23 is fixed to the pulley block and the other end thereof sequentially bypasses the hub guide mechanism 24 and the nacelle guide mechanism 25 and is connected to the power unit 26. The hub guiding mechanism 24 comprises a first connecting rod 241 and a second connecting rod 242 which are in turn alternately rotatably connected to carry and guide the wire rope 23. The power unit 26 is adapted to tighten or release the wire rope 23 to hoist or lower the blade 14.
In some embodiments, the pulley block may comprise at least one fixed pulley 221 mounted to the hub sling 22 and at least one movable pulley 211 mounted to the blade root sling 21.
In a specific implementation, the wire rope 23 is fixed by one end thereof to the fixed pulley 221 or the movable pulley 211 and is connected to the hub guiding mechanism 24 after passing around the pulley block, and is further connected to the power unit 26 after passing around the hub guiding mechanism 24 and the nacelle guiding mechanism 25 in turn.
In some embodiments, one end of the wire rope 23 may be fixed to the movable pulley 211 and connected to the hub guiding mechanism 24 after passing around the fixed pulley 221 and the movable pulley 211 in sequence.
In some embodiments, one end of the wire rope 23 may also be fixed to the fixed pulley 221, and connected to the hub guiding mechanism 24 after passing around the movable pulley 211, the fixed pulley 221, and the movable pulley 211 in order.
In some embodiments, the wire rope 23 may also be wound around the fixed pulley 221 and the movable pulley 211 multiple times and then connected to the hub guiding mechanism 24.
In some embodiments, the hub guiding mechanism 24 further includes a rotational connection mechanism 243 that rotationally connects the first connecting rod 241 and the second connecting rod 242.
In particular implementations, the first connecting rod 241 includes a pair of outer connecting rods 241a, 241b; the second connecting rod 242 includes a pair of inner connecting rods 242a, 242b; further, a pair of outer connecting rods 241a, 241b are located outside of a pair of inner connecting rods 242a, 242 b.
The rotational coupling mechanism 243 includes a coupling shaft 243a, a rolling bearing 243b, and a pair of fasteners 243c, 243d. Wherein a rolling bearing 243b is disposed between the inner sides of the pair of inner connecting rods 242a, 242b and is adapted to carry and guide the wire rope 23; the connection shaft 243a passes through the pair of outer connection rods 241a, 241b, the pair of inner connection rods 242a, 242b, and the rolling bearing 243b, and both ends thereof extend to the outside of the pair of outer connection rods 241a, 241b, respectively; the pair of fastening members 243c, 243d are located outside the pair of outer connecting rods 241a, 241b, respectively, and fastened to both ends of the connecting shaft 243a, respectively.
In this way, by providing the rotation connection mechanism 243, not only the rotation connection between the first connection lever 241 and the second connection lever 242 can be made, but also the movement of the wire rope 23 can be carried and guided by the rolling bearing 243b in the rotation connection mechanism 243.
In a specific implementation, the first connecting rod 241 and the second connecting rod 242 connected by the rotational connection mechanism 243 may be disposed between the pitch bearings of the hub 13. Thus, not only the existing space can be effectively utilized, but also the normal use of the hub 13 is not affected.
In some embodiments, the wind turbine is provided with three blades 14. Correspondingly, the hub 13 is provided with three pitch bearings.
In a specific implementation, the hub sling 22 may be mounted on a pitch bearing connected to the blade 14 to be dismounted or mounted, while the first connecting rod 241 and the second connecting rod 242 connected by the rotational connection 243 may be arranged between the other two pitch bearings.
In some embodiments, the hub guiding mechanism 24 further includes a hook 244 at the front end of the first connecting rod 241 and the second connecting rod 242 that are alternately rotatably connected.
In a specific implementation, the hook 244 is fixed to an opening at the front end of the hub 13 and is rotatably connected to the first connecting rod 241 at the rear end thereof.
In some embodiments, the hook 244 and the first connecting rod 241 are rotationally coupled by a rotational coupling mechanism 243.
Specifically, the hook 244 includes a pair of hooks 244a, 244b. The rolling bearing 243b is disposed between the inner sides of the pair of hooks 244a, 244b, and is adapted to carry and guide the wire rope 23; the connection shaft 243a passes through the pair of outer connection rods 241a, 241b, the pair of hooks 244a, 244b, and the rolling bearing 243b, and both ends thereof extend to the outside of the pair of outer connection rods 241a, 241b, respectively; the pair of fastening members 243c, 243d are located outside the pair of outer connecting rods 241a, 241b, respectively, and fastened to both ends of the connecting shaft 243a, respectively.
In some embodiments, the hub guiding mechanism 24 further includes a tightening mechanism 245 at the rear end of the first connecting rod 241 and the second connecting rod 242 that are alternately rotatably connected.
In particular embodiments, the tensioning mechanism 245 is connected at one end to the second connecting rod 242 at its forward end and at its other end to the fan structure between the hub 13 and the nacelle 12.
In some embodiments, the tensioning mechanism 245 may be an elongated annular structure with one end connected to the second connecting rod 242 at its forward end via a rotational connection 243 and the other end connected to the fan structure between the hub 13 and the nacelle 12.
In a specific implementation, the second connecting rod 242 located at the front end of the tensioning mechanism 245 is provided with a rotational connection mechanism 243 at its end connected to the tensioning mechanism 245.
Specifically, the rolling bearing 243b in the rotation connection mechanism 243 is provided between the inner sides of the pair of inner connection rods 242a, 242b, and is adapted to carry and guide the wire rope 23; the connection shaft 243a passes through the pair of inner connection rods 242a, 242b and the rolling bearing 243b, and both ends thereof extend to the outside of the pair of outer connection rods 241a, 241b, respectively; the pair of fastening members 243c, 243d are located outside the pair of outer connecting rods 241a, 241b, respectively, and fastened to both ends of the connecting shaft 243a, respectively. Meanwhile, one end of the long ring structure of the tension mechanism 245 is fitted around the circumference of the rolling bearing 243 b.
In some embodiments, the system further includes a hub internal guide wheel 246 mounted inside the hub 13. The in-hub guiding wheel 246 is adapted to guide the wire rope 23 coming out of the pulley set to the hub guiding mechanism 24.
In some embodiments, the nacelle guide mechanism 25 includes a nacelle interior guide wheel mounted inside the nacelle 12. The cabin interior guide wheels are adapted to carry and guide the wire ropes 23 and to guide the wire ropes 23 coming out of the hub guide mechanism 24 to the power unit 26.
In some embodiments, the power unit 26 is secured to the bottom of the tower 11 or the interior of the nacelle 12.
In some embodiments, power unit 26 may include a hoist or elevator.
In order to better understand the technical scheme provided by the embodiment of the utility model, the process of replacing the blade of the wind driven generator by using the system is further described below.
On one hand, the system is used for dismantling the blades of the wind driven generator, and the method comprises the following steps of:
s101, adjusting the blade 14 to be disassembled to a vertical downward position;
s102, fixing the hub guiding mechanism 24 on the hub 13;
s103, fixing the hub sling 22 on the hub 13;
s104, lowering the blade 14 to be disassembled by a certain distance, such as 30-80cm, by using special blade equipment, such as an electric hoist, hydraulic/pneumatic equipment and the like;
s105, fixing the blade root sling 21 on the blade root of the blade 14;
s106, connecting the steel wire rope 23 to the hub sling 22 and the blade root sling 21;
s107, the steel wire rope 23 bypasses the hub guide mechanism 24 and the cabin guide mechanism 25 and is finally connected to the power unit 26;
s108, starting the power unit 26 to tighten the steel wire rope 23;
s109, dismantling special equipment for the blades;
s110, starting the power unit 26, and downwards placing the steel wire rope 23, so as to lower the blade 14 to be disassembled to a desired position;
s111, removing the blade root lifting tool 21.
On the other hand, the system is used for installing the wind driven generator blade, and the method comprises the following steps:
s201, fixing a blade root lifting appliance 21 to a blade 14 to be mounted;
s202, starting the power unit 26, tightening the steel wire rope 23 upwards, and further lifting the blade 14 to be mounted into the air, and reaching a specified position, for example, a position 30-80cm away from the hub 13;
s203, installing special equipment for the blades;
s204, dismantling the blade root lifting appliance 21;
s205, lifting the blade 14 to be assembled to an installation position through special blade equipment, installing a blade root bolt and fastening;
s206, removing the blade replacement system.
Although specific embodiments have been described above, these embodiments are not intended to limit the scope of the disclosure, even where only a single embodiment is described with respect to a particular feature. The characteristic examples provided in the present disclosure are intended to be illustrative, not limiting, unless stated differently. In practice, the features of one or more of the dependent claims may be combined with the features of the independent claims where technically possible, according to the actual needs, and the features from the respective independent claims may be combined in any appropriate way, not merely by the specific combinations enumerated in the claims.
Claims (10)
1. A system for replacing wind turbine blades based on a plurality of connecting rods, the system comprising a tower (11) fixed to the ground, a nacelle (12) mounted on top of the tower (11), a hub (13) mounted on the nacelle (12), and blades (14) mounted on the hub (13), characterized in that the system comprises a blade root sling (21) mounted on the root of the blades (14), a hub sling (22) mounted on the hub (13), pulley blocks and steel wires (23) connecting the blade root sling (21) and the hub sling (22), a hub guiding mechanism (24) mounted on the hub (13), a nacelle guiding mechanism (25) mounted inside the nacelle (12), and a power unit (26); one end of the steel wire rope (23) is fixed on the pulley block, and the other end of the steel wire rope sequentially bypasses the hub guide mechanism (24) and the cabin guide mechanism (25) and is connected to the power unit (26); the hub guiding mechanism (24) comprises a first connecting rod (241) and a second connecting rod (242) which are sequentially and alternately connected in a rotating way so as to bear and guide the steel wire rope (23); the power unit (26) is adapted to tighten or release the wire rope (23) to hoist or lower the blade (14).
2. The system for replacing a wind turbine blade based on a plurality of connecting rods according to claim 1, characterized in that said pulley block comprises at least one fixed pulley (221) mounted to said hub sling (22) and at least one movable pulley (211) mounted to said blade root sling (21); the wire rope (23) is fixed to the fixed pulley (221) or the movable pulley (211) through one end thereof, and is connected to the hub guiding mechanism (24) after bypassing the pulley block.
3. The multiple connection rod based system for replacing wind turbine blades of claim 1, wherein the hub guiding mechanism (24) further comprises a rotational connection mechanism (243) rotationally connecting the first connection rod (241) and the second connection rod (242); the first connecting rod (241) comprises a pair of outer connecting rods (241 a, 241 b); the second connecting rod (242) comprises a pair of inner connecting rods (242 a, 242 b); the pair of outer connecting rods (241 a, 241 b) are located outside the pair of inner connecting rods (242 a, 242 b); the rotational connection mechanism (243) includes a connection shaft (243 a), a rolling bearing (243 b), and a pair of fasteners (243 c, 243 d); the rolling bearing (243 b) is arranged between the inner sides of the pair of inner connecting rods (242 a, 242 b) and is adapted to carry and guide the wire rope (23); the connecting shaft (243 a) passes through the pair of outer connecting rods (241 a, 241 b), the pair of inner connecting rods (242 a, 242 b) and the rolling bearing (243 b), and both ends thereof extend to the outside of the pair of outer connecting rods (241 a, 241 b), respectively; the pair of fasteners (243 c, 243 d) are located outside the pair of outer connecting rods (241 a, 241 b) respectively and fastened to both ends of the connecting shaft (243 a) respectively.
4. A system for replacing a wind turbine blade based on a plurality of connection rods according to claim 3, characterized in that said hub guiding mechanism (24) further comprises a hook (244) at the front end of said first (241) and second (242) connection rods connected in rotation alternately; the hook body (244) is fixed at the opening of the front end of the hub (13) and is rotatably connected with the first connecting rod (241) at the rear end of the hook body.
5. The system for replacing a wind turbine blade based on a plurality of connection rods according to claim 4, characterized in that the hook (244) and the first connection rod (241) are rotationally connected by the rotational connection mechanism (243); the hook body (244) includes a pair of hooks (244 a, 244 b); -said rolling bearing (243 b) is arranged between the inner sides of said pair of hooks (244 a, 244 b) and is adapted to carry and guide said wire rope (23); the connecting shaft (243 a) passes through the pair of outer connecting rods (241 a, 241 b), the pair of hooks (244 a, 244 b) and the rolling bearing (243 b), and both ends thereof extend to the outside of the pair of outer connecting rods (241 a, 241 b), respectively; the pair of fasteners (243 c, 243 d) are located outside the pair of outer connecting rods (241 a, 241 b) respectively and fastened to both ends of the connecting shaft (243 a) respectively.
6. A system for replacing a wind turbine blade based on a plurality of connection rods according to claim 3, characterized in that said hub guiding mechanism (24) further comprises a tensioning mechanism (245) at the rear end of said alternately rotationally connected first (241) and second (242) connection rods; one end of the tensioning mechanism (245) is connected to a second connecting rod (242) at the front end thereof, and the other end is connected to a fan structure between the hub (13) and the nacelle (12).
7. The system for replacing wind turbine blades based on a plurality of connection rods according to claim 1, characterized in that it further comprises an in-hub guiding wheel (246) mounted inside the hub (13); the hub internal guide wheel (246) is adapted to guide the wire rope (23) coming out of the pulley block to the hub guide mechanism (24).
8. A system for replacing wind turbine blades based on a plurality of connection rods according to claim 1, characterized in that said nacelle guiding mechanism (25) comprises a nacelle internal guiding wheel mounted inside said nacelle (12); the cabin interior guide wheel is adapted to guide the wire rope (23) coming out of the hub guide mechanism (24) to the power unit (26).
9. The system for replacing wind turbine blades based on a plurality of connection rods according to claim 1, characterized in that the power unit (26) is fixed to the bottom of the tower (11) or to the inside of the nacelle (12).
10. The multiple connection rod based system for replacing wind turbine blades of claim 1, wherein the power unit (26) comprises a hoist or a hoist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321001448.6U CN219366226U (en) | 2023-04-28 | 2023-04-28 | System for change aerogenerator blade based on a plurality of connecting rods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321001448.6U CN219366226U (en) | 2023-04-28 | 2023-04-28 | System for change aerogenerator blade based on a plurality of connecting rods |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219366226U true CN219366226U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321001448.6U Active CN219366226U (en) | 2023-04-28 | 2023-04-28 | System for change aerogenerator blade based on a plurality of connecting rods |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219366226U (en) |
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2023
- 2023-04-28 CN CN202321001448.6U patent/CN219366226U/en active Active
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