Assembling tool, and construction method for wind turbine generator system

Abstract

An assembling tool (600), and a construction method for a wind turbine generator system. The assembling tool (600) is used for assembling a hub (1) and blades (2), and the assembling tool (600) comprises: a main support member (10), which has a predetermined height in a first direction (X), wherein one end of the main support member (10) in the first direction (X) is configured to support the hub (1), and the other end is configured to connect to a carrier; and an auxiliary docking member (20), which comprises an adjustment assembly (22) and a clamping assembly (21), wherein the clamping assembly (21) is provided with a clamping cavity (21a) running therethrough in a second direction (Y) so as to accommodate and fix the blades (2), and the adjustment assembly (22) is connected to the clamping assembly (21) and can adjust the relative position of the clamping assembly (21) to the main support member (10) in at least two directions, so as to align the blades (2) with the hub (1), the second direction (Y) intersecting the first direction (X).

Description

Assembly tooling and construction method of wind turbine generator set

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202311436883.6 filed on October 31, 2023, and priority to Chinese Patent Application No. 202311438012.8 filed on October 31, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of wind power technology, and in particular to an assembly tool and a construction method for a wind turbine generator set. Background Art

[0004] As wind turbines have officially entered the era of price parity and the government has eliminated grid-connected electricity price subsidies, domestic wind turbine manufacturers are seeking ways to reduce turbine costs. To achieve this, manufacturers are innovating technologies to increase the capacity of individual turbines, leading to a gradual shift toward larger capacity wind turbines in China.

[0005] At the same time, as the offshore project areas are gradually developed and saturated, offshore wind power projects are gradually developing towards the deep sea, and the operating water depth of the projects will develop towards sea areas of more than 70 meters or even more than 100 meters. For offshore wind turbines in the deep sea, the foundation form will use a floating foundation.

[0006] At present, the construction method of floating units is mainly to assemble the wind turbines on the floating foundation by crane at the dock, and then transport them to the machine site by wet dragging. Due to the high weight and height of the affordable large-capacity units, there are currently no larger and more suitable cranes on the market that can assemble large-capacity units at the dock. Even if crane resources exist, the carrying capacity of the dock is very limited. There are very few docks in China that can meet such a large carrying capacity. Therefore, in order to reduce the construction cost of floating units, the best way is to install wind turbines at offshore machine sites.

[0007] It can be seen that based on the future floating unit projects in deep sea areas, the development of an assembly tooling and a construction method for wind turbines for offshore installation by floating cranes in deep sea areas is an urgent need of the floating wind power market in the post-parity era.

[0008] Summary of the Invention

[0009] The embodiments of the present application provide an assembly tool and a construction method for a wind turbine generator set, which can meet the installation requirements of the wind turbine generator set in deep sea areas and reduce the installation difficulty and cost.

[0010] On the one hand, according to an embodiment of the present application, an assembly tool is proposed for assembling a hub and blades, the assembly tool comprising: a main support member having a predetermined height along a first direction, one end of the main support member in the first direction being configured to support the hub and the other end being configured to be connected to a carrier; an auxiliary docking member comprising an adjustment component and a clamping component, the clamping component having a clamping cavity extending along a second direction to accommodate and fix the blade, the adjustment component being connected to the clamping component and capable of adjusting the relative position of the clamping component and the main support member in at least two directions so that the blade is centered with the hub, and the second direction intersects with the first direction.

[0011] According to the assembly tool provided in the embodiment of the present application, the assembly tool includes a main support member and an auxiliary docking member. The main support member is used to support the hub at a predetermined height along a first direction. The hub can be first connected to the nacelle and then supported on the main support member. The auxiliary docking member includes an adjustment component and a clamping component. The clamping cavity provided on the clamping component along the second direction can be used to accommodate and fix the blades. Since the adjustment component can adjust the relative position of the clamping component and the main support member in at least two directions, the relative position of the blade and the hub can be adjusted, thereby reducing the difficulty of splicing the blade and the hub, which is beneficial to the construction of the wind turbine generator set.

[0012] On the other hand, according to an embodiment of the present application, a construction method of a wind turbine generator set is proposed, comprising:

[0013] Transporting the nacelle, hub, multiple blades, and multiple tower sections to the area where the wind turbine foundation is located, wherein the tower section includes a cylinder body with end flanges provided at both axial ends thereof, and at least one of a guide structure and a locking structure provided on the cylinder body, wherein the locking structure can be locked with the guide structure, and the wind turbine foundation is provided with one of the guide structure and the locking structure;

[0014] Hoisting a tower section above the wind turbine foundation and locking one of the guide structure and the locking structure provided on the tower section with the other of the guide structure and the locking structure provided on the wind turbine foundation;

[0015] Fix the locked end flange of the tower section to the wind turbine foundation with fasteners;

[0016] Hoist the next tower section above the tower section connected to the wind turbine foundation and lock the guide structure of one of the two tower sections with the locking structure of the other;

[0017] Fixing the two adjacent locked tower sections with fasteners;

[0018] Attach the nacelle, hub, blades, and one of the tower sections to the tower section on the wind turbine foundation.

[0019] According to another aspect of one embodiment of the present application, the step of connecting the nacelle, the hub, the plurality of blades, and one of the tower segments to the tower segment on the wind turbine foundation includes:

[0020] Assemble the nacelle, hub, multiple blades and one of the tower sections into the nose body;

[0021] Hoist the main body of the wind turbine to the top of the wind turbine foundation, and lock one of the guide structure and locking structure of the tower section of the main body of the wind turbine with the other of the guide structure and locking structure of the tower section fixed on the top of the wind turbine foundation;

[0022] The end flange of the tower section of the head body is fixed to the end flange of the tower section fixed at the top of the wind turbine foundation by fasteners.

[0023] According to the construction method of a wind turbine generator set provided in an embodiment of the present application, when a wind turbine generator set needs to be constructed in a deep-sea area, large components such as the nacelle, hub, blades and multiple tower sections can be first transported to the area where the wind turbine foundation is located, and at least one of a guide structure and a locking structure is provided on the cylinder body of the tower section. At the same time, a guide structure and a locking structure are provided on the wind turbine foundation. A tower section can be first hoisted to the top of the wind turbine foundation and docked with the wind turbine foundation. During the docking process, one of the guide structure and the locking structure on the wind turbine foundation can be docked and locked with the other of the guide structure and the locking structure on the tower section, thereby realizing rapid docking of the wind turbine foundation with a tower section. At this time, the crane can release the force, and then fix the end flange of the tower section to the wind turbine foundation through fasteners. Similarly, after the lowest tower section is docked with the wind turbine foundation, the next tower section is hoisted and docked with the tower section that has been installed on the wind turbine foundation. After locking through the guide structure on one and the locking structure on the other, the crane is relieved of force. The end flanges between the tower sections are connected. During the installation of fasteners, under the action of the guide structure and the locking structure, the tower sections will not shake with each other or with the wind turbine foundation, ensuring the safety of deep-sea construction.

[0024] For the installation of the nacelle, hub, blades and the last tower section, the above structures can be transported to the floating crane in the area where the wind turbine foundation is located, where they can be spliced ​​to form the head, and then hoisted to the uppermost tower section on the wind turbine foundation for docking. The tower section of the head body and the uppermost tower section on the wind turbine foundation are locked by the guide structure on one and the locking structure on the other, and then the fasteners between the end flanges are connected, so that the wind turbine generator set can be constructed at its deep-sea machine site, reducing dependence on dock cranes, dock resources, and self-elevating platforms, thereby reducing construction costs, avoiding the overall towing of the wind turbine foundation and the unit, and thus reducing transportation risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0026] FIG1 is a schematic diagram of the overall structure of an assembly tool according to an embodiment of the present application;

[0027] FIG2 is a schematic diagram of a partial structure of an assembly tool according to an embodiment of the present application;

[0028] FIG3 is a schematic diagram of a partial structure of an assembly tool according to an embodiment of the present application from another perspective;

[0029] FIG4 is a schematic diagram of a partial structure of an assembly tool according to an embodiment of the present application from another perspective;

[0030] FIG5 is a schematic diagram of an assembly tool in use according to an embodiment of the present application;

[0031] FIG6 is a schematic flow chart of a construction method of a wind turbine generator set according to an embodiment of the present application;

[0032] 7 to 16 are construction schematic diagrams corresponding to the steps of the construction method of a wind turbine generator set according to one embodiment of the present application;

[0033] FIG17 is a schematic flow chart of a construction method of a wind turbine generator set according to another embodiment of the present application;

[0034] FIG18 is a schematic structural diagram of a tower section according to an embodiment of the present application;

[0035] FIG19 is a schematic structural diagram of a locking structure and a guiding structure according to an embodiment of the present application;

[0036] FIG20 is a schematic diagram of a partial structure of a locking structure according to an embodiment of the present application;

[0037] FIG21 is a partial cross-sectional view of a locking structure according to an embodiment of the present application;

[0038] FIG22 is a schematic structural diagram of an assembly tool in accordance with an embodiment of the present application cooperating with a blade at one viewing angle.

[0039] Among them: 10 - main support member; 11 - column; 12 - rotating assembly; 121 - bearing; 1211 - rotating ring; 1212 - fixed ring; 122 - rotating drive member; 1221 - fourth motor; 1222 - driving wheel; 20 - auxiliary docking member; 21 - clamping assembly; 21a - clamping cavity; 211 - fixed support; 2111 - support rod; 2112 - bottom frame; 2113 - support plate; 212 - first drive member; 213 - clamping unit; 2131 - fixed frame; 2131a - avoidance; 2132 - clamping block; 2133 - second drive member; 2133a - power source; 2133b - lead screw; 2133c - C-arm; 2134 - pressure sensor; 214 - connecting seat; 22 - Adjustment assembly; 221 - Base plate; 222 - Lifting unit; 2221 - Lifting arm; 2221a - First arm; 2221b - Second arm; 2222 - Third driving member; 2223 - Top bracket; 2224 - Bottom bracket; 2225 - Adapter block; 223 - First adjustment unit; 2231 - First moving platform; 2232 - First guide member; 2233 - Fourth driving member; 2233a - Second motor; 2233b - Driving screw; 224 - Second adjustment unit; 2241 - Second moving platform; 2242 - Second guide member; 2243 - Fifth driving member; 2243a - Third motor; 2243b - Transmission wheel; 2243c - Traction member; 30 - Reinforced connector; 40 - Centering sensor; 50 - First acceleration sensor; 60 - Second acceleration sensor; 1-hub; 1a-sensor; 1b-web; 2-blade; 3-nacelle; X-first direction; Y-second direction; Z-third direction. 100 - Wind turbine foundation; 410 - Second launcher; 500 - Tower section; 510 - Tower body; 520 - End flange; 530 - Guide structure; 531 - First mounting portion; 5311 - Strip groove; 532 - Guide unit; 5321 - First shaft segment; 5322 - Second shaft segment; 5323 - Slot; 540 - Locking structure; 541 - Second mounting portion; 5411 - Mounting groove; 5412 - Slide groove; 5413 - First slot; 5414 - Second slot; 5415 - Moving slot; 542 - Locking unit; 5421 - Locking block; 5421a - Arc surface; 5421b - Through hole; 5422 - First elastic member; 5423 - Positioning portion; 5423a - Moving column; 5424 - Second elastic member; 5425 - Adapter ring; 600 - Assembly tooling; 621a-Adjustment accessories; 700-Crane; 1000-Head of crane; 2000-Floating crane.

[0040] In the drawings, like parts are given like reference numerals, but the drawings are not necessarily drawn to scale. DETAILED DESCRIPTION

[0041] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are set forth in order to provide a comprehensive understanding of the present application. However, it will be apparent to those skilled in the art that the present application can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the well-known structures and technologies are not shown in order to avoid unnecessary ambiguity in the present application; and, for clarity, the sizes of some structures may be exaggerated. In addition, the features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments.

[0042] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the construction method of the wind turbine generator set of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] As wind turbines have reached price parity and the government has eliminated grid-connected electricity price subsidies, domestic wind turbine manufacturers are seeking ways to reduce turbine costs. To achieve this, manufacturers are innovating technologies to increase the capacity of individual turbines. As a result, domestic wind turbines are gradually moving towards larger capacities. Following the arrival of price parity, large-megawatt turbines, such as 8MW, 11MW, 12MW, 13MW, and even 16MW, have appeared on the market, increasing in size and weight.

[0044] At the same time, as the offshore project areas are gradually developed and saturated, offshore wind power projects are gradually developing towards the deep sea. The operating water depth of the project will develop from 20m and 30m to 50m, 70m and even 100m sea areas. For offshore wind turbines in the deep sea, the foundation form will use a floating foundation. The floating foundation is much higher than the fixed foundation in terms of economy and construction difficulty.

[0045] At present, the construction process of floating units mainly involves assembling the wind turbines onto the floating foundation by crane at the dock, and then transporting them to the machine site by wet dragging. Due to the high weight and height of the affordable large-capacity units, there are currently no larger and more suitable cranes on the market that can assemble large-capacity units at the dock. Even if crane resources exist, the carrying capacity of the dock is very limited. There are very few docks in China that can meet such a large carrying capacity. Therefore, in order to reduce the construction cost of floating units, the best way is to install floating units at offshore machine sites.

[0046] The offshore installation of floating units generally uses a self-elevating platform to lift the units onto the floating foundation. The unit components are docked statically to dynamically, which is slightly difficult. As the water depth in deep sea areas becomes deeper and deeper, when the water depth exceeds 80m, there are currently no applicable installation vessels in China, and only large floating cranes can be used to install the units. The installation of unit components by floating cranes is a dynamic-to-dynamic docking, which is more difficult than with self-elevating platforms.

[0047] Therefore, facing the large-capacity units in the era of parity, how to complete the installation and operation and maintenance of large-capacity floating units in deep sea areas and reduce the installation and operation and maintenance costs under the conditions of such scarcity of crane resources, dock resources and self-elevating platform resources is a question worthy of deep consideration.

[0048] The floating turbines currently installed in the domestic market, when using small-megawatt models between 5MW and 8MW, have relatively small weight and hub center height. They are all hoisted onto the floating foundation using a crane at the dock. The crane is also relatively small, and the requirements for the dock's bearing capacity are relatively low. However, in the future, floating units will gradually develop towards deep sea, and the capacity of units installed on floating foundations will also gradually increase, and most of them will be wind turbines above 10MW. Faced with these heavy, high-capacity wind turbines, it is difficult to find large-sized and large-tonnage cranes on the market to meet the needs of unit lifting at the dock. At the same time, the carrying capacity of domestic docks is limited. If large-sized crawler cranes are needed, the docks need to be reinforced, and the cost of dock renovation will increase. Moreover, for small-batch floating wind turbine projects, long-term occupation of the dock and high dock rental fees will bring great construction costs to the project. Furthermore, when encountering deep sea projects, after the floating wind turbines are installed at the dock, the floating foundation and wind turbines need to be towed long distances from the dock to the offshore machine site. If strong convective weather or typhoons are encountered during the towing process, the transportation risk is very high and the consequences will be unimaginable.

[0049] Therefore, the installation of floating turbines will gradually move offshore. However, offshore installation of floating turbines also presents challenges. As the water depth increases in the project area, the performance parameters of jack-up platforms are limited by the pile legs, and the availability of jack-up platforms is decreasing. Therefore, it is necessary to consider the installation of floating turbines offshore using floating cranes. Furthermore, the replacement of major components in existing floating wind turbine foundations requires towing the entire float and turbine to the dock for replacement, which makes the maintenance cost of floating turbines very high.

[0050] It can be seen that based on the future floating unit projects in deep sea areas, the development of an assembly tool that can be used for the offshore installation and operation and maintenance of floating units by floating cranes in deep sea areas can ensure that the process of installing large-capacity units on floating foundations and replacing large components of units at offshore machine sites can be realized, reducing dependence on dock cranes, dock resources, and self-elevating platforms, thereby reducing construction and operation and maintenance costs, and eliminating the floating foundation and the overall towing link of the wind turbine to reduce transportation risks. This is an urgent need of the floating wind power market after the parity era.

[0051] As shown in Figures 1 to 5, based on this, an embodiment of the present application provides an assembly tool 600 for assembling a hub 1 and a blade 2. The assembly tool 600 includes a main support member 10 and an auxiliary docking member 20. The main support member 10 has a predetermined height along a first direction X. One end of the main support member 10 in the first direction X is configured to support the hub 1 and the other end is configured to be connected to a carrier. The auxiliary docking member 20 includes an adjustment component 22 and a clamping component 21. The clamping component 21 has a clamping cavity 21a that passes through along a second direction Y to accommodate and fix the blade 2. The adjustment component 22 is connected to the clamping component 21 and can adjust the relative position of the clamping component 21 and the main support member 10 in at least two directions to align the blade 2 with the hub 1, and the second direction Y intersects with the first direction X.

[0052] The main support member 10 can be a cylindrical, columnar, or hollow truss structure, and possesses sufficient strength to support the hub 1 or the nose of the hub 1, including the nacelle 3. One end of the main support member 10 can be detachably connected to the nacelle 3 using fasteners. The other end of the main support member 10 can be connected to a supporting structure such as a carrier by welding or bolting.

[0053] The auxiliary docking member 20 can be connected to the main support member 10 and supported by the main support member 10. Of course, the auxiliary docking member 20 can be set on a carrier and supported by a supporting structure on the carrier to ensure the use requirements with the main support member 10.

[0054] The clamping assembly 21 can be used to clamp and fix the blade 2. It can adopt an openable and closable clamping structure so that the blade 2 can be taken and placed. Of course, the blade 2 can also be inserted into the clamping assembly 21 through one end of its own length direction to ensure the clamping and fixing requirements of the blade 2.

[0055] The adjusting assembly 22 can move freely in two directions, three directions, etc. The adjusting assembly 22 drives the clamping assembly 21 to move, thereby driving the blade 2 to move in at least two directions to ensure docking with the hub 1.

[0056] The first direction X and the second direction Y may intersect, and of course, may be selected to be perpendicular to each other.

[0057] An assembly tool provided in one embodiment of the present application includes a main support member 10 and an auxiliary docking member 20. The main support member 10 is used to support the hub 1 at a predetermined height along a first direction X. The hub 1 can be first connected to the nacelle 3 and then supported on the main support member 10. The auxiliary docking member 20 includes an adjustment component 22 and a clamping component 21. The clamping cavity 21a provided on the clamping component 21 along the second direction Y can be used to accommodate and fix the blade 2. Since the adjustment component 22 can adjust the position of the clamping component 21 relative to the main support member 10 in at least two directions, the relative position of the blade 2 and the hub 1 can be adjusted, reducing the difficulty of splicing the blade 2 and the hub 1, which is beneficial to the construction of the wind turbine. In particular, for the construction of offshore wind turbines, the carrier can be a floating crane, and the assembly tool can be fixed on the floating crane to transport the blade 2, the hub 1, the nacelle 3 and other components to the offshore site of the wind turbine for assembly, using the adjustment of the auxiliary docking member 20. Compared with pure crane suspension splicing, it can not only ensure the stability of the blade 2 in the air, but also make the position adjustment of the blade 2 simpler and more accurate, thereby reducing the difficulty of splicing the blade 2 and the hub 1.

[0058] As shown in Figures 1 to 3, in some optional embodiments, an assembly tool provided by an embodiment of the present application, the clamping assembly 21 includes a fixed support 211, a first driving member 212 and a pair of clamping units 213, the pair of clamping units 213 are relatively distributed on both sides of the fixed support 211 and are respectively rotatably connected to the fixed support 211, the fixed support 211 and the pair of clamping units 213 are enclosed to form a clamping cavity 21a, the first driving member 212 is connected between the clamping unit 213 and the fixed support 211 and can drive the clamping unit 213 to rotate relative to the fixed support 211 to clamp or release the blade 2.

[0059] The clamping assembly 21 can be connected to the adjustment assembly 22 via its fixed support 211 .

[0060] In an assembly tool provided in one embodiment of the present application, the clamping assembly 21 adopts the aforementioned structure, capable of accommodating and securing the blade 2 through the clamping cavity 21a formed by the fixed support 211 and the paired clamping units 213. The provision of the first drive member 212 and the rotational connection between the clamping assembly 21 and the fixed support 211 enable the first drive member 212 to drive the clamping units 213 to rotate, thereby achieving clamping and release of the blade 2, ensuring the assembly tool's stable support and release requirements for the blade 2.

[0061] Optionally, the paired clamping units 213 may have the same structure and be symmetrically distributed on both sides of the fixed support 211. Through the above arrangement, the uniformity of the force on both sides of the blade 2 can be ensured, and the stability requirement when the blade 2 is fixed can be met.

[0062] In some optional embodiments, an assembly tool provided by one embodiment of the present application, the first driving member 212 includes a first telescopic cylinder, the cylinder body and one of the cylinder rods of the first telescopic cylinder are rotatably connected to the clamping unit 213, and the other of the cylinder body and the cylinder rod of the first telescopic cylinder are rotatably connected to the adjustment assembly 22.

[0063] With this arrangement, when the first telescopic cylinder is shortened, the paired clamping units 213 are pulled away from each other, opening the clamping cavity 21a. Blade 2 can be placed into the clamping cavity 21a or separated from the clamping assembly 21. When the first telescopic cylinder is extended, the paired clamping units 213 are driven to rotate in opposite directions and move toward each other, closing the clamping cavity 21a and clamping the blade 2. This simplifies operation and facilitates control of the clamping units 213, facilitating both the clamping and release of the blade 2.

[0064] Optionally, in order to reliably ensure that each clamping unit 213 clamps the blade 2, each clamping unit 213 can be connected to a first telescopic cylinder, and the two clamping units 213 can be quickly opened and closed by synchronously driving the two first telescopic cylinders.

[0065] As shown in Figures 1 to 3, the fixed support 211 optionally includes a plurality of support rods 2111, a bottom frame 2112, and a support plate 2113. The plurality of support rods 2111 are respectively connected to the bottom frame 2112. Parts of the support rods 2111 are inserted into the bottom frame 2112 toward the interior of the clamping cavity 21a and connected to the support plate 2113. The fixed support 211 can be rotatably connected to the paired clamping units 213 through the bottom frame 2112, optionally using a hinged connection.

[0066] Optionally, the support plate 2113 may be a curved plate, which is conducive to matching the shape of the blade 2 and ensuring the clamping effect of the blade 2.

[0067] Optionally, a connecting seat 214 may be provided on each clamping unit 213 , and the clamping unit 213 may be rotatably connected to the first driving member 212 via the connecting seat 214 .

[0068] In some optional embodiments, an assembly tool provided by an embodiment of the present application, the clamping unit 213 includes a fixed frame 2131, a clamping block 2132 and a second driving member 2133, the fixed frame 2131 is rotatably connected to the fixed support 211, the first driving member 212 is connected to the fixed frame 2131, the clamping block 2132 is located on the side of the clamping units 213 arranged in pairs facing each other, and an avoidance opening 2131a is provided on the fixed frame 2131, the second driving member 2133 is partially inserted into the avoidance opening 2131a and connected to the clamping block 2132, the clamping block 2132 is configured to contact the blade 2, and the second driving member 2133 drives the clamping block 2132 to move relative to the fixed frame 2131 to clamp and fix the blade 2.

[0069] Optionally, the fixed frame 2131 can be rotatably connected to the bottom frame 2112 of the fixed support 211 , the second driving member 2133 and the avoidance opening 2131 a can be clearance-fitted, and the second driving member 2133 has rotational freedom relative to the fixed frame 2131 .

[0070] An embodiment of the present application provides an assembly tool, in which the clamping unit 213 adopts the above-mentioned structural form, and can drive the clamping block 2132 to move relative to the fixed frame 2131 through the second driving member 2133, so that the clamping block 2132 can be adjusted according to different models of blades 2, thereby ensuring the clamping and fixing requirements of the blades 2, improving the versatility of the assembly tool, and ensuring the stability of the blades 2.

[0071] Optionally, the fixed frame 2131 and the bottom frame 2112 arranged in pairs are spliced ​​together to form a circular ring structure.

[0072] In some optional embodiments, the second driving member 2133 includes a power source 2133a and an adjusting member. The adjusting member partially passes through the avoidance opening 2131a and is universally connected to the clamping block 2132. The power source 2133a drives the adjusting member to move and changes the depth of the adjusting member inserted into the inner side of the fixed frame 2131 through the avoidance opening 2131a.

[0073] In an assembly tool provided by one embodiment of the present application, the second driving member 2133 includes a power source 2133a and an adjusting member. The power source 2133a provides power to drive at least partial movement of the adjusting member, thereby ensuring a driving effect on the clamping block 2132. By providing a universal connection between the adjusting member and the clamping block 2132, optionally via a universal joint, the clamping block 2132 has multiple degrees of rotational freedom relative to the adjusting member. During the process of clamping the blade 2, the angle of the clamping block 2132 can be adjusted according to the surface of the blade 2, thereby ensuring the stability of the clamping support for the blade 2.

[0074] Optionally, the clamping blocks 2132 and the support plate 2113 may both be arc-shaped plate-like bodies, and the clamping blocks 2132 arranged in pairs may optionally be symmetrically distributed on both sides of the support plate 2113 to ensure the stability of the clamping support.

[0075] Optionally, the second driving member 2133 can be in the form of a telescopic cylinder, a crank slider, or a screw nut.

[0076] In some optional embodiments, the power source 2133a may include a first motor, the adjusting member may include a screw rod 2133b and a C-shaped arm 2133c, the first motor is arranged in the fixed frame 2131 and the output end is connected to the screw rod 2133b, a free end of the C-shaped arm 2133c is sleeved on the screw rod 2133b and is threadedly connected to the screw rod 2133b, and the other end of the C-shaped arm 2133c is inserted into the interior of the fixed frame 2131 through the avoidance opening 2131a and is universally connected to the clamping block 2132.

[0077] During operation, the first motor rotates to drive the screw rod 2133b to rotate, thereby driving the C-shaped arm 2133c to move so as to adjust the size of the C-shaped arm 2133c inserted into the avoidance opening 2131a.

[0078] In some optional embodiments, the clamping block 2132 is an arc-shaped block, and a pressure sensor 2134 is provided on the surface of the clamping block 2132 facing away from the fixed frame 2131. The power source 2133a adjusts the depth of the adjustment member inserted into the inner side of the fixed frame 2131 through the avoidance opening 2131a according to the pressure information of the clamping block 2132 acting on the blade 2 fed back by the pressure sensor 2134.

[0079] A pressure sensor 2134 may be provided on each clamping block 2132 . The pressure sensor 2134 may be provided on the surface of the clamping block 2132 facing the blade 2 and may be connected by bonding, embedding, or the like.

[0080] An assembly tool provided by an embodiment of the present application, by setting a pressure sensor 2134, can use the pressure value fed back by the pressure sensor 2134 to control the power source 2133a, so that the pressure of the clamping block 2132 on the blade 2 is moderate, avoiding excessive pressure that may damage the surface of the blade 2, and also avoiding the occurrence of unstable clamping of the blade 2 due to insufficient pressure.

[0081] In some optional embodiments, an assembly tool provided by an embodiment of the present application, the adjustment component 22 includes a base plate 221, a first adjustment unit 223 and a lifting unit 222, the first adjustment unit 223 is connected between the base plate 221 and the lifting unit 222, the clamping component 21 is connected to the lifting unit 222, the overall length of the lifting unit 222 in the first direction X is adjustable, and the first adjustment unit 223 can at least partially drive the lifting unit 222 to move relative to the base plate 221 along the second direction Y.

[0082] The base plate 221 is used to support the first adjusting unit 223 and the lifting unit 222 .

[0083] Optionally, the substrate 221 may be connected to the main support member 10 , and may be connected to the main support member 10 by welding or other methods.

[0084] The first direction X may be the height direction of the main support member 10 , and the second direction Y intersects with the first direction X and may be perpendicular to each other.

[0085] An assembly tool provided by an embodiment of the present application enables the adjustment component 22 to include a base plate 221, a first adjustment unit 223 and a lifting unit 222. The position of the blade 2 in the first direction X can be adjusted by adjusting the length of the lifting unit 222 in the first direction X. At the same time, the lifting unit 222 can be driven by the first adjustment unit 223 to move along the second direction Y, thereby driving the blade 2 to move along the second direction Y, which is conducive to docking with the hub 1, specifically, docking with the yaw bearing 121 on the hub 1.

[0086] Optionally, the second direction Y may be the axial direction of the pitch bearing corresponding to the hub 1 to be docked.

[0087] In some optional embodiments, the lifting unit 222 includes a lifting arm 2221 arranged in a pair and a third driving member 2222, the lifting arm 2221 includes a first arm 2221a and a second arm 2221b rotatably connected to each other, the first arm 2221a is connected to the first adjusting unit 223, and the second arm 2221b is connected to the clamping assembly 21, and the third driving member 2222 is connected between the lifting arms 2221 arranged in a pair and drives the first arm 2221a and the second arm 2221b to rotate relative to each other to adjust the length of the lifting unit 222 in the first direction X.

[0088] In an assembly tool provided by an embodiment of the present application, the lifting unit 222 adopts the above-mentioned structural form. When the third driving member 2222 drives the first arm 2221a and the second arm 2221b to rotate relative to each other, the overall height of the lifting unit 222 can be adjusted by adjusting the angle between the first arm 2221a and the second arm 2221b, thereby ensuring the length of the lifting unit 222 in the first direction X and realizing the position adjustment requirement of the blade 2 in the first direction X.

[0089] In some optional embodiments, the lifting unit 222 further includes a top bracket 2223, a bottom bracket 2224, and a transfer block 2225 located between the top bracket 2223 and the bottom bracket 2224, which are arranged relative to each other in the first direction X. The top bracket 2223 is connected to the clamping assembly 21, and the bottom bracket 2224 is connected to the first adjustment unit 223. Each lifting arm 2221 is correspondingly provided with a transfer block 2225. The ends of the first arm 2221a and the second arm 2221b of the lifting arm 2221 facing each other are respectively rotatably connected to the corresponding transfer block 2225. The end of the first arm 2221a of the lifting arm 2221 facing away from the second arm 2221b is rotatably connected to the bottom bracket 2224, and the end of the second arm 2221b facing away from the first arm 2221a is rotatably connected to the top bracket 2223.

[0090] The third driving member 2222 is indirectly connected to the two lifting arms 2221 through two adapter blocks 2225 .

[0091] The assembly tool provided in one embodiment of the present application facilitates the connection with the clamping component 21 and the first adjustment unit 223 through the above-mentioned setting. At the same time, while ensuring the length adjustment requirement of the lifting unit 222 in the first direction X, it simplifies the structure and stabilizes the lifting action.

[0092] It can be understood that the above-mentioned form of the lifting unit 222 is only an optional embodiment. In some embodiments, the lifting unit 222 can also include a second telescopic cylinder, and one of the cylinder body and cylinder rod of the second telescopic cylinder is connected to the clamping assembly 21 and the other is connected to the first adjustment unit 223. By controlling the extension and shortening of the second telescopic cylinder, the length adjustment requirement of the lifting unit 222 can also be guaranteed, thereby meeting the position adjustment requirement of the blade 2 in the first direction X.

[0093] As shown in FIG4 , in some optional embodiments, the first adjustment unit 223 may include a first movable platform 2231, a first guide 2232, and a fourth drive member 2233. The first guide 2232 extends along the second direction Y. The first movable platform 2231 and the first guide 2232 are movably connected, optionally in a sliding manner. The fourth drive member 2233 is connected to the first movable platform 2231 and drives the first movable platform 2231 to reciprocate relative to the first guide 2232 along the second direction Y. The lifting unit 222 is connected to the first movable platform 2231. The first guide 2232 may be directly or indirectly connected to the base plate 221.

[0094] In an assembly tool provided by an embodiment of the present application, the first adjustment unit 223 adopts the above-mentioned structural setting, so that the adjustment component 22 can drive the clamping component 21 and the blade 2 inside it to move along the second direction Y, thereby facilitating high-altitude docking of the blade 2 with the hub 1 and alleviating the docking difficulty caused by using only a sling.

[0095] In some optional embodiments, the first guide member 2232 may include more than two first guide rails, each of which extends along the second direction Y, and the first movable platform 2231 is slidably connected to each first guide rail.

[0096] Optionally, the fourth driving member 2233 may include a second motor 2233a and a drive screw 2233b. The drive screw 2233b extends along the second direction Y and is threadedly connected to the first movable platform 2231. One end of the drive screw 2233b is connected to the second motor 2233a, and the other end is supported by the first movable platform 2231. The fourth driving member 2233 adopts the above-mentioned structure to ensure smooth movement. Of course, in some embodiments, the fourth driving member 2233 may also be in the form of a telescopic cylinder to ensure the required movement of the first movable platform 2231 in the second direction Y.

[0097] In some optional embodiments, in the assembly tool provided by one embodiment of the present application, the adjustment component 22 also includes a second adjustment unit 224, the first adjustment unit 223 is connected to the substrate 221 through the second adjustment unit 224, and the second adjustment unit 224 is at least partially capable of driving the first adjustment unit 223 to move as a whole along a third direction Z relative to the substrate 221, and the third direction Z intersects with the first direction X and the second direction Y.

[0098] Optionally, the third direction Z and the first direction X and the second direction Y are perpendicular to each other.

[0099] An assembly tool provided in one embodiment of the present application enables the adjustment component 22 to further include a second adjustment unit 224, so that the adjustment component 22 can adjust the relative position of the clamping component 21 and the main support member 10 in at least three directions, which is beneficial to the splicing of the blade 2 and the hub 1 and effectively reduces the difficulty of splicing.

[0100] In some optional embodiments, in an assembly tool provided in one embodiment of the present application, the second adjustment unit 224 may include a second movable platform 2241, a second guide 2242, and a fifth driving member 2243. The second guide 2242 extends along a third direction Z. The second movable platform 2241 is movably connected to the second guide 2242, optionally in a sliding connection. The fifth driving member 2243 is connected to the first movable platform 2231 and drives the second movable platform 2241 to reciprocate along the third direction Z relative to the second guide 2242.

[0101] In the assembly tool provided by one embodiment of the present application, the second adjustment unit 224 adopts the above-mentioned form, which has a simplified structure and can ensure the movement requirements of the clamping component 21 and the blade 2 clamped and fixed therein in the third direction Z.

[0102] In some optional embodiments, the second guide member 2242 may include more than two second guide rails, each second guide rail extends along the third direction Z, and the second movable platform 2241 is slidably connected to each second guide rail.

[0103] In some optional embodiments, the fifth driving member 2243 includes a third motor 2243a, a transmission wheel 2243b, and a traction member 2243c. The traction member 2243c includes a transmission belt or a transmission chain. The transmission wheel 2243b is supported on the base plate 221 and rotates with the base plate 221 via a base. The traction member 2243c rotates with the transmission wheel 2243b and is connected to the second movable platform 2241. The third motor 2243a can drive the transmission wheel 2243b to rotate, thereby driving the second movable platform 2241 to move along the second guide member 2242 through the traction member 2243c.

[0104] Optionally, the number of the fifth driving members 2243 is more than two, and the more than two fifth driving members 2243 are spaced apart in the second direction Y to ensure the stability of the second movable platform 2241 during movement.

[0105] In some optional embodiments, the assembly tool provided in one embodiment of the present application, the base plate 221 is connected to the main support member 10, and the connection can be optionally connected by welding or other methods, of course, it can also be connected by bolt fastening. A reinforcing connector 30 is provided between the base plate 221 and the main support member 10. The reinforcing connector 30 can include a plurality of support rods 2111, each support rod 2111 having one end connected to the base plate 221 and the other end connected to the main support member 10.

[0106] The assembly tool provided in one embodiment of the present application can improve the overall integration of the assembly tool, reduce material usage, and reduce the difficulty of the floating crane in carrying the assembly tool when assembling the blades 2 and the hub 1 at sea through the above-mentioned settings.

[0107] Continuing to refer to Figures 1 to 4, in some optional embodiments, an assembly tool is provided in an embodiment of the present application, and the main support member 10 includes a column 11 and a rotating component 12, the rotating component 12 includes a bearing 121 and a rotating drive member 122, the bearing 121 includes a rotating ring 1211 and a fixed ring 1212 for rotational cooperation, the fixed ring 1212 is connected to the column 11 and the rotating ring 1211 is used to connect to the cabin 3 connected to the hub 1, and the rotating drive member 122 is connected to the rotating ring 1211 and drives the rotating ring 1211 to rotate relative to the fixed ring 1212.

[0108] An embodiment of the present application provides an assembly tooling, in which the main support member 10 adopts the above-mentioned structural form, which can not only ensure the supporting effect of the nacelle 3 connected to the hub 1, but also can perform planar rotation of the nacelle 3 and the hub 1 as needed, change the angular relationship between them and the auxiliary docking member 20, and further ensure the rapid splicing requirements of the blade 2 and the hub 1.

[0109] In some optional embodiments, in the assembly tool provided in one embodiment of the present application, the rotating drive member 122 may include a fourth motor 1221 and a drive wheel 1222. The fourth motor 1221 is connected to the column 11 and may be connected to the column 11 through a connecting plate. The output section of the fourth motor 1221 is connected to the drive wheel 1222, and the drive wheel 1222 is engaged with the rotating ring 1211. The rotating ring 1211 can be the inner ring of the bearing 121, of course, it can also be the outer ring of the bearing 121, and can be optionally the inner ring of the bearing 121.

[0110] In the assembly tooling provided by one embodiment of the present application, the rotating drive member 122 adopts the above-mentioned form, which can ensure the driving effect of the rotating circle 1211 of the bearing 121, and thus ensure the rotation requirement of the head formed by the cabin 3 and the hub 1 with the column 11 as the center.

[0111] In some optional embodiments, an embodiment of the present application provides an assembly tool, wherein the number of rotating drive members 122 is multiple, and the multiple rotating drive members 122 are spaced apart in the circumferential direction of the column 11, and the driving wheel 1222 of each rotating drive member 122 is respectively engaged with the rotating circle 1211.

[0112] In some optional embodiments, an assembly tool provided by one embodiment of the present application has a cavity in the column 11 , each rotating drive component 122 is located in the inner cavity, and the rotating ring 1211 can be selected as the inner ring of the bearing 121 .

[0113] In some optional embodiments, an assembly tool provided in an embodiment of the present application, by setting the rotating drive component 122 in the inner cavity of the column 11, is beneficial to the protection of the rotating drive component 122 and can avoid the risk of interference when the blade 2 is assembled with the hub 1.

[0114] In some optional embodiments, in the assembly tooling provided in the above embodiments of the present application, a centering sensor 40 is provided on the clamping assembly 21 , and the centering sensor 40 is configured to feed back the centering information of the blade 2 and the hub 1 .

[0115] Optionally, during assembly, a corresponding sensor 1a can be set on the hub 1. The sensor 1a can be specifically set on the web 1b corresponding to the hub 1 and each pitch bearing. The centering sensor 40 can sense with the sensor 1a. The centering sensing information between the centering sensor 40 and the sensor 1a can determine the stop position of the adjustment component 22 to adjust the clamping component 21 relative to the main support component 10.

[0116] For example, the centering sensor 40 may be disposed in the central area of ​​the top of the clamping assembly 21 , and may optionally be connected to a circular structure formed by the paired fixing frame 2131 and the bottom frame 2112 being spliced ​​together as a whole.

[0117] Sensor 1a can be positioned at the center of web 1b of hub 1. When the two are aligned, sensing can confirm that clamping assembly 21 is aligned with web 1b of hub 1. Lifting unit 222 can then be extended to align the center of blade 2 with the center of web 1b of hub 1. This arrangement facilitates adjustment of the clamping assembly 21 and reduces the difficulty of docking blade 2 with hub 1.

[0118] Continuing to refer to Figures 1 to 5, in some optional embodiments, an assembly tool provided by an embodiment of the present application has a first acceleration sensor 50 provided on the adjustment component 22, and the first acceleration sensor 50 is configured to feedback the heave acceleration of the auxiliary docking member 20, and a second acceleration sensor 60 is provided on the main support member 10, and the second acceleration sensor 60 is configured to feedback the heave acceleration of the main support member 10.

[0119] The heave acceleration may be understood as the acceleration along the first direction X.

[0120] When the assembly tooling is used offshore and moved to deep sea with a floating crane, the hub 1 and blades 2 are directly assembled in the deep sea. Due to the action of seawater, the floating crane will experience certain swaying and other movements. By providing a first acceleration sensor 50 and a second acceleration sensor 60, the heave acceleration of the auxiliary docking member 20 and the heave acceleration of the auxiliary docking member 20 can be obtained, and the heave acceleration of the hub 1 and the heave acceleration of the blades 2 can be fed back. The heave acceleration of the auxiliary docking member 20 fed back by the first acceleration sensor 50 can ultimately be used to obtain the heave amplitude of the blade 2, and the heave acceleration of the main support member 10 fed back by the second acceleration sensor 60 can ultimately be used to obtain the heave amplitude of the hub 1. When there is a difference between the heave amplitude of the blade 2 and the heave amplitude of the hub 1, the length of the lifting unit 222 can be adjusted to compensate for the difference, so that the web of the blade 2 and the hub 1 can be aligned even in a floating or swaying state, reducing the difficulty of assembling the hub 1 and the tower in deep sea areas.

[0121] It is most difficult to dock the blade 2 with the hub 1 on a rocking floating crane, because the bolts connecting the blade 2 with the pitch bearing 121 of the hub 1 are horizontal. Once the head and the blade 2 are misaligned due to the rocking of the floating crane, it is difficult to insert the bolts of the blade 2 into the pitch bearing. Even if the bolts are inserted, the shear force will damage the bolts. The assembly tool is installed on the floating crane for the assembly of the unit. First, the head consisting of the hub 1 and the blade 2 is hoisted to the top of the column 11. When the rotating assembly 12 is included, the cabin 3 can be docked with the rotating ring 1211. The rotating drive 122 drives the rotating ring 1211 to rotate relative to the fixed ring 1212, thereby realizing the rotation of the head, which can make the length direction of the head parallel to the width direction of the base plate 221.

[0122] To accommodate different aircraft nose lengths, the second movable platform 2241 of the second adjustment unit 224 of the auxiliary docking member 20 has a movable function in the third direction Z, or in other words, a lateral movement function. The second adjustment unit 224 can be used to move the blade 2 directly in front of the pitch bearing 121 of the hub 1. The fifth drive member 2243 is activated to rotate the transmission wheel 2243b, thereby causing the traction member 2243c to rotate periodically. The traction member 2243c can then move the second movable platform 2241 laterally on the second guide member 2242. The first movable platform 2231 of the first adjustment unit 223 of the auxiliary docking member 20 has a movable function in the second direction Y, or in other words, a longitudinal movement function. After blade 2 is placed on the fixed support 211 of the clamping assembly 21 and the paired clamping units 213 have clamped blade 2 to ensure that blade 2 does not swing left or right, when blade 2 is further inserted into the pitch bearing of hub 1, there is no need to use the crane of the floating crane to move blade 2 longitudinally. Blade 2 can be inserted into pitch bearing 121 by simply using the movement function of the first adjustment unit 223 in the second direction Y. The fourth drive member 2233 is actuated to drive screw 2233b to rotate so that the first movable platform 2231 moves on the second guide rail. The lifting unit 222 of the auxiliary docking member 20 has a heave compensation function in the first direction X. On the one hand, through the action of the third drive member 2222, the first arm 2221a and the second arm 2221b rotate relative to each other, thereby realizing the up and down movement of the lifting unit 222, which can lift blade 2 so that the center of the blade root of blade 2 is aligned with the center of pitch bearing 121 of hub 1.

[0123] On the other hand, through its automatic compensation function, the root center of the blade 2 is always aligned with the center of the pitch bearing of the hub 1. A first acceleration sensor 50 is provided on the adjustment assembly 22, and the first acceleration sensor 50 is configured to feedback the heave acceleration of the auxiliary docking member 20. A second acceleration sensor 60 is provided on the main support member 10, and the second acceleration sensor 60 is configured to feedback the heave acceleration of the main support member 10. The heave acceleration of the auxiliary docking member 20 fed back by the first acceleration sensor 50 can ultimately be used to obtain the heave amplitude of the blade 2, and the heave acceleration of the main support member 10 fed back by the second acceleration sensor 60 can ultimately be used to obtain the heave amplitude of the hub 1. When there is a difference between the heave amplitude of the blade 2 and the heave amplitude of the hub 1, the difference can be compensated by adjusting the length of the lifting unit 222 to interpolate. This ensures that the webs of the impeller and hub 1 can be aligned even in a floating or shaking state, reducing the difficulty of splicing the hub 1 and the tower in deep sea areas.

[0124] Furthermore, the clamping assembly 21 has a stabilizing function. Depending on the root diameter of the blade 2, the left and right clamping blocks 2132 can clamp the blade 2 to ensure that the blade 2 does not swing left or right. The power source 2133a is actuated, the screw 2133b rotates, and the C-shaped arm 2133c can carry the left and right clamping blocks 2132 to achieve the fixing and release of the blade 2. During clamping, the pressure sensor 2134 on the surface of the clamping block 2132 detects the clamping force. The clamping condition is considered complete only when the clamping force reaches the design requirements. The clamping assembly 21 of the auxiliary docking member 20 also has an opening and closing function. Through the action of the first drive member 212, the left and right paired clamping units 213 of the fixed support 211 can rotate to achieve opening and closing.

[0125] The assembly tool provided in the embodiments of the present application has the following advantages:

[0126] 1. With this assembly tool, even if there is no jack-up platform available in the market in the future, a floating crane can be used at the offshore machine site to lift the large-capacity unit onto the floating foundation, ensuring the feasibility of the future offshore construction technology for large-capacity floating units in the deep sea.

[0127] 2. By adopting this assembly tool, the blade 2 can be docked and installed with the head of the floating crane in a dynamic-dynamic state. Through the lifting unit 222, the first acceleration sensor 50, and the second acceleration sensor 60 of the assembly tool, the blade 2 and the hub 1 can be placed in a relatively static state, the docking efficiency of the blade 2 is higher, and the bolt tightening of the blade 2 is safer.

[0128] 3. By adopting this assembly tooling, floating wind turbines can be installed at sea using a floating crane. There is no need for a self-elevating platform, no need to select a large-sized and large-tonnage dock crane at the dock, and no need to occupy dock resources to transform the dock's carrying capacity. This can greatly reduce the construction cost of large-capacity floating units. At the same time, when installing floating units at sea, there is no need to tow the floating foundation and wind turbine as a whole, which greatly reduces the towing cost and the uncertain risks during the towing process (such as typhoon interference).

[0129] 4. The use of this assembly tooling can also take into account the replacement of large components of the floating unit in the later stage, ensuring the feasibility of future deep-sea large-capacity floating units at sea operation and maintenance. There is no need to use the existing method of towing the entire floating body and wind turbine to the dock for large component replacement, which greatly reduces the maintenance cost of the floating unit.

[0130] 5. This assembly tool can be used for assembling different blades 2 of different models. The lateral moving platform of the tool can make different blades 2 face the pitch bearings of different hubs 1. The spacing between the left and right clamping blocks 2132 of the support and fixing mechanism of the tool can be adjusted to stabilize different blades 2 and reduce swing amplitude.

[0131] 6. The assembly tooling can also be used for offshore installation on floating cranes and operation and maintenance of fixed units.

[0132] 7. When the floating crane hoists the blade 2 into the clamping assembly 21 of the auxiliary docking tooling, if the blade 2 is difficult to insert into the circular frame due to shaking, the clamping units 213 arranged in pairs in the clamping assembly 21 can be opened, and after the blade 2 is hoisted onto the fixed support 211, the clamping assembly 21 arranged in pairs can be closed to proceed to the next step to ensure the installation requirements of the blade 2.

[0133] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

[0134] On the other hand, as wind turbines have reached parity and the government has eliminated grid-connected electricity price subsidies, domestic wind turbine manufacturers are seeking ways to reduce turbine costs. To achieve this, manufacturers are innovating technologies to increase the capacity of individual turbines. As a result, domestic wind turbines are gradually moving towards larger capacities. Following the parity era, large-megawatt turbines, such as 8MW, 11MW, 12MW, 13MW, and even 16MW, have appeared on the market, with increasingly larger and heavier turbines.

[0135] At the same time, as the offshore project areas are gradually developed and saturated, offshore wind power projects are gradually developing towards the deep sea. The operating water depth of the project will develop from 20m and 30m to 50m, 70m and even 100m sea areas. For offshore wind turbines in the deep sea, the foundation form will use a floating foundation. The floating foundation is much higher than the fixed foundation in terms of economy and construction difficulty.

[0136] At present, the construction method of floating units is mainly to assemble the wind turbines on the floating foundation by crane at the dock, and then transport them to the machine site by wet dragging. Due to the high weight and height of the affordable large-capacity units, there are currently no larger and more suitable cranes on the market that can assemble large-capacity units at the dock. Even if crane resources exist, the carrying capacity of the dock is very limited. There are very few docks in China that can meet such a large carrying capacity. Therefore, in order to reduce the construction cost of floating units, the best way is to install floating units at offshore machine sites.

[0137] It can be seen that based on future floating unit projects in deep sea areas, developing a new construction method for wind turbines for offshore installation by floating cranes in deep sea areas is an urgent need of the floating wind power market in the post-parity era.

[0138] Currently, the construction method for floating turbines primarily involves assembling the turbines onto floating foundations at the dock using a crane, and then transporting them to the installation site via wet towing. Due to the significant weight and height of these affordable, high-capacity turbines, there are currently no large, suitable cranes available on the market for assembling these turbines at the dock. Even if cranes were available, dock capacity is limited, and few domestic docks can handle such high loads. Therefore, to reduce the construction cost of floating turbines, the optimal method is to install them at an offshore installation site. Furthermore, as the water depths in deep waters continue to deepen, the solution for replacing major components in existing turbines is to tow the entire float and turbine to the dock for replacement, which significantly increases the maintenance cost of floating turbines.

[0139] It can be seen that based on future floating unit projects in deep sea areas, developing an offshore installation and operation and maintenance process solution for floating units for offshore installation by floating cranes in deep sea areas is an urgent need of the floating wind power market in the post-parity era.

[0140] To this end, the present application provides a construction method for a wind turbine generator set, which can meet the installation requirements of the wind turbine generator set in deep sea areas and reduce the installation difficulty and cost.

[0141] As shown in FIG6 and in combination with FIG7 to FIG19 , a construction method of a wind turbine generator set provided by an embodiment of the present application includes:

[0142] S100. Transport the nacelle 3, the hub 1, the multiple blades 2 and the multiple tower sections 500 to the area where the wind turbine foundation 100 is located. The tower section 500 includes a cylinder body 510 with end flanges 520 at both axial ends thereof and at least one of a guide structure 530 and a locking structure 540 provided on the cylinder body 510. The locking structure 540 can be locked and matched with the guide structure 530. One of the guide structure 530 and the locking structure 540 is provided on the wind turbine foundation 100.

[0143] S200, hoist a tower section 500 above the wind turbine foundation 100 and lock one of the guide structure 530 and the locking structure 540 provided on the tower section 500 with the other of the guide structure 530 and the locking structure 540 provided on the wind turbine foundation 100.

[0144] S300 , fixing the locked end flange 520 of the tower section 500 to the wind turbine foundation 100 by means of fasteners.

[0145] S400 , hoisting the next tower section 500 above the tower section 500 connected to the wind turbine foundation 100 and locking the guide structure 530 of one of the two tower sections 500 with the locking structure 540 of the other.

[0146] S500 , fixing the two adjacent locked tower sections 500 by fasteners.

[0147] S600 , connecting the nacelle 3 , the hub 1 , the plurality of blades 2 , and one of the tower segments 500 to the tower segment 500 on the wind turbine foundation 100 .

[0148] In step S100, optionally, the number of tower sections 500 provided may be three, four or more, and the barrel body 510 of each tower section 500 may include one barrel section, and of course, may also include two or more barrel sections. When more than two barrel sections are included, the more than two barrel sections are welded and connected in sequence.

[0149] Optionally, the wind turbine foundation 100 may be a floating foundation, and the form of the wind turbine foundation 100 is not limited to single-column, three-column, four-column, damping pool and other forms.

[0150] Optionally, a floating crane 2000 may be used to transport the nacelle 3, hub 1, blades 2, and tower sections 500 to the location of the wind turbine foundation 100. The floating crane 2000 may be in various forms, including a semi-submersible barge and a crane vessel. Optionally, the floating crane 2000 may be equipped with a crane 700 for lifting wind turbine components.

[0151] Optionally, the guide structure 530 and the locking structure 540 can be connected by a snap-fit ​​connection. Alternatively, a snap-fitting slot can be provided on one of the locking structure 540 and the guide structure 530, and a retractable snap-fitting protrusion can be provided on the other. In the locked state, the snap-fitting protrusion can extend into the snap-fitting slot and snap-lock. In the unlocked state, the snap-fitting protrusion can be separated from the snap-fitting slot to unlock. Of course, this is an optional example. The locking structure 540 and the guide structure 530 can also be connected by electromagnetic adsorption or other methods, such as power-on locking and power-off unlocking, so that the guide structure 530 and the locking structure 540 can switch between a locked state and an unlocked state.

[0152] Optionally, some of the multiple tower segments 500 may include both the locking structure 540 and the guiding structure 530. The locking structure 540 and the guiding structure 530 are disposed oppositely at the two ends of the cylinder body 510. Optionally, the surfaces of the locking structure 540 and the guiding structure 530 that face away from each other in the axial direction of the cylinder body 510 may be flush with the end surface of the end flange 520 that faces away from the cylinder body 510. Of course, among the multiple tower segments 500, some of the tower segments 500 may include either the locking structure 540 or the guiding structure 530. The wind turbine foundation 100 may be provided with either the locking structure 540 or the guiding structure 530. The specific configuration may be determined based on the structure disposed on the end of the tower segment 500 that is to be docked therewith. Taking the tower section 500 as an example, two tower sections 500 may include a locking structure 540 and a guiding structure 530 , respectively, and the remaining tower section 500 may include one of the locking structure 540 and the guiding structure 530 .

[0153] In step S200, as shown in FIG7 , the tower section 500 can be hoisted using a crane 700, so that the floating crane 2000 is positioned in front of the wind turbine foundation 100. The crane 700 can use a tower crane beam to lift the tower section 500, which includes both the guide structure 530 and the locking structure 540, and dock it with the wind turbine foundation 100. Optionally, the wind turbine foundation 100 can be provided with a locking structure 540. Accordingly, the end of the tower section 500 docked with the wind turbine foundation 100 is provided with a guide structure 530. By lowering the tower section 500 to dock with the wind turbine foundation 100 using the crane 700, the guide structure 530 and the locking structure 540 cooperate to lock, thereby achieving rapid docking between the tower section 500 and the wind turbine foundation 100.

[0154] In step S300, the crane 700 on the floating crane 2000 can unload the force in time, and then install the tower bolts and tighten the torque to connect the end flange 520 of the tower section 500 with the flange on the top of the wind turbine foundation 100 with bolts or other fasteners.

[0155] In step S400, as shown in FIG8 , the crane 700 can be used to hoist the next tower section 500, so that the floating crane 2000 can be positioned in front of the wind turbine foundation 100. The crane 700 can use the tower crane beam to lift the tower section 500 including the guide structure 530 and the locking structure 540 and dock them with the wind turbine foundation 100. Optionally, the tower section 500 that is already connected to the wind turbine foundation 100 can be installed at one end away from the wind turbine foundation 100. Whether the locking structure 540 or the guiding structure 530 is provided determines the orientation of the tower section 500 hoisted by the crane 700. For example, if the locking structure 540 is provided at one end of the tower section 500 connected to the wind turbine foundation 100 facing away from the wind turbine foundation 100, the guiding structure 530 of the tower section 500 hoisted by the crane 700 can be directed downward and docked with the tower section 500 on the wind turbine foundation 100, thereby locking the relative position between the two connected tower sections 500.

[0156] In step S500, the crane 700 on the floating crane vessel 2000 can unload the force in time, and then install the tower bolts and tighten them with torque, and connect the end flanges 520 of the two tower sections 500 with bolts or other fasteners.

[0157] In step S600, the nacelle 3, the hub 1, the plurality of blades 2, and one of the tower sections 500 can be assembled into the main body 1000 on the floating crane vessel 2000, and then hoisted onto and connected to the tower section 500 above the wind turbine foundation 100. Of course, the nacelle 3, the hub 1, and one of the tower sections 500 can also be hoisted onto the wind turbine foundation 100 as a whole or separately and connected to the tower section 500 on the wind turbine foundation 100. Specifically, the nacelle 3 can be connected to the tower section 200, the hub 1 can be connected to the nacelle 3, and the blades 2 can be connected to the hub 1 in sequence.

[0158] A construction method for a wind turbine generator set provided by an embodiment of the present application, through the above-mentioned construction steps, ensures that when the tower section 500 and the wind turbine foundation 100 are spliced, or when the tower sections 500 are spliced ​​with each other, the relative positions of the tower section 500 and the wind turbine foundation 100 or between the tower sections 500 and each other are locked by the guide structure 530 and the locking structure 540 before the bolts and other fasteners are tightened after docking. Even if the wind turbine foundation 100 shakes due to the action of seawater, there will be no shaking between the tower section 500 and the wind turbine foundation 100 or between the tower sections 500, thereby realizing rapid construction of the tower frame, reducing the difficulty of docking during construction, and improving construction safety.

[0159] As shown in FIG. 17 , in some optional embodiments, step S600 includes:

[0160] S601, assembling the nacelle 3, the hub 1, the plurality of blades 2 and one of the tower sections into a nose body 1000;

[0161] S700, hoist the nose body 1000 above the wind turbine foundation 100, and lock one of the guide structure 530 and the locking structure 540 of the tower section 500 of the nose body 1000 with the other of the guide structure 530 and the locking structure 540 of the tower section 500 fixed at the top of the wind turbine foundation 100.

[0162] S800 , fixing the end flange 520 of the tower section 500 of the head body 1000 to the end flange 520 of the tower section 500 fixed at the top of the wind turbine foundation 100 by means of fasteners.

[0163] As shown in Figures 9 to 13, the nacelle 3, hub 1, multiple blades 2, and one of the tower sections 500 can be assembled into the main engine 1000 on a floating crane 2000. Optionally, the nacelle 3 and one of the tower sections 500 can be assembled on land and then transported to the area where the wind turbine foundation 100 is located. Alternatively, they can be transported to the area where the wind turbine foundation 100 is located and assembled on-site on the floating crane 2000 or on the assembled tower section 500. The tower section 500 included in the main engine 1000 can be connected to the nacelle 3 at one end, and one of the guide structure 530 and the locking structure 540 can be provided at the end facing away from the nacelle 3.

[0164] In step S700, as shown in Figures 14 to 16, the crane 700 can be rotated away from the assembled part of the unit, and the crane 700 can be bent down so that its overall height is lower than the height of the horizontal blades 2. The yaw system of the head can be used to rotate it to face the sea. During the entire rotation process, the blades 2 will not collide with the crane 700.

[0165] The main body 1000 may be equipped with a turning tool that rotates the hub 1 upward, positioning the three blades 2 in a "Y" configuration. The blade 2 pointing vertically downward does not interfere with the deck surface of the floating crane 2000. The crane 700 can use a combined lifting beam to hoist the entire main body 1000 toward the wind turbine foundation 100. The crane 700 can rotate to a predetermined angle to align the guide structure 530 and locking structure 540 on the tower section 500 of the main body 1000. The main body 1000 is then lowered to align the tower section 500 with the uppermost tower section 500 of the wind turbine foundation 100. The guide structure 530 and locking structure 540 lock the two relative positions.

[0166] In step S800, the crane 700 on the floating crane 2000 can unload the force in time, and then install the tower bolts and tighten the torque, and connect the end flanges 520 of the two tower sections 500 with bolts and other fasteners to realize the assembly of the wind turbine generator set.

[0167] A construction method for a wind turbine generator set provided by an embodiment of the present application, through the above-mentioned construction steps, ensures that when the tower section 500 and the wind turbine foundation 100 are spliced, and when the tower sections 500 are spliced ​​with each other, the relative positions of the tower section 500 and the wind turbine foundation 100 or between the tower sections 500 and each other are locked by the guide structure 530 and the locking structure 540 before the bolts and other fasteners are tightened after docking. Even if the wind turbine foundation 100 is shaken by the action of seawater, no shaking will occur between the tower section 500 and the wind turbine foundation 100 or between the tower sections 500, which is conducive to the rapid construction of the tower, and can reduce the difficulty of docking during construction and improve the safety of construction.

[0168] For the installation of the nacelle 3, hub 1, blades 2 and the last tower section 500, the above structures can be transported to the floating crane 2000 in the area where the wind turbine foundation 100 is located, where they are assembled to form the head body 1000, and then hoisted to the topmost tower section 500 on the wind turbine foundation 100 for docking. Similarly, the tower section 500 of the head body 1000 and the topmost tower section 500 on the wind turbine foundation 100 are locked by the guide structure 530 on one and the locking structure 540 on the other, and then the fasteners between the end flanges 520 are connected, so that the wind turbine generator set can be constructed at its deep-sea machine site, reducing dependence on the dock crane 700, dock resources, and self-elevating platforms, thereby reducing construction costs, avoiding the overall towing link of the wind turbine foundation 100 and the unit, and thus reducing transportation risks.

[0169] In some optional embodiments, in a construction method provided by one embodiment of the present application, the number of tower sections 500 is n and n ≥ 4, and before the step of hoisting the head body 1000 above the wind turbine foundation 100, the method further includes:

[0170] Repeat the steps of hoisting the next tower segment 500 above the tower segment 500 connected to the wind turbine foundation 100, locking the guide structure 530 of one of the two tower segments 500 with the locking structure 540 of the other, and fixing the two locked adjacent tower segments 500 with fasteners, until the n-1th tower segment 500 is installed above the wind turbine foundation 100.

[0171] Optionally, the value of n may be 4, 5, 6 or other larger values, and may be specifically set according to the model of the wind turbine generator set to be constructed and the tower height requirement.

[0172] The construction method provided in one embodiment of the present application, through the above-mentioned settings, can meet the construction requirements of wind turbines of different models and tower heights, and at the same time can meet the installation requirements of wind turbines in deep sea areas, reducing installation difficulty and cost.

[0173] As shown in Figures 18 to 21, in some optional embodiments, an embodiment of the present application provides a construction method, wherein the guide structure 530 includes a plurality of guide units 532 spaced apart from each other, the locking structure 540 includes a plurality of locking units 542 spaced apart from each other, the locking unit 542 includes an installation groove 5411 and a locking portion located in the installation groove 5411, and the guide unit 532 is at least partially capable of extending into the installation groove 5411 of the adjacent locking unit 542 and being locked by the locking portion.

[0174] Optionally, the multiple guiding units 532 included in the guiding structure 530 can be spaced apart in the circumferential direction of the tower section 500 or the wind turbine foundation 100, and can be spaced apart and evenly arranged. Correspondingly, the multiple locking units 542 included in the locking structure 540 can be spaced apart in the circumferential direction of the tower section 500 or the wind turbine foundation 100, and can be spaced apart and evenly arranged.

[0175] The above arrangement ensures uniform load bearing capacity at all locations when the tower section 500 is docked with the wind turbine foundation 100 , or when the tower sections 500 are docked with each other, thereby further improving safety and stability during docking.

[0176] In some optional embodiments, a locking groove 5323 is provided on the guiding structure 530. When the guiding structure 530 extends into the installation groove 5411, the locking structure 540 partially extends into the locking groove 5323 to ensure locking strength.

[0177] In some optional embodiments, in order to ensure the degree of integration, the guiding structure 530 may include a first mounting portion 531, and the locking structure 540 may include a second mounting portion 541. Each guiding unit 532 is arranged on the first mounting portion 531 and is connected to the cylinder body 510 and one of the wind turbine foundation 100 through the first mounting portion 531. Each locking unit 542 is arranged on the second mounting portion 541 and is connected to the cylinder body 510 and one of the wind turbine foundation 100 through the second mounting portion 541.

[0178] In some optional embodiments, the guiding structure 530 includes a first shaft segment 5321 and a second shaft segment 5322 distributed successively along the same direction, the first shaft segment 5321 is connected between the second shaft segment 5322 and the first mounting portion 531, the radial dimension of the second shaft segment 5322 toward the side of the first shaft segment 5321 in the first direction X is greater than the radial dimension of the first shaft segment 5321, and the first shaft segment 5321, the second shaft segment 5322 and the first mounting portion 531 enclose a slot 5323.

[0179] The guiding structure 530 adopts the above-mentioned structural form, which is conducive to the cooperation with the locking structure 540, and is conducive to the tower section 500 extending into the installation groove 5411 during the docking process, and the formed card groove 5323 is in the form of an annular groove, which is conducive to the cooperation with the locking structure 540 to ensure the locking strength.

[0180] In some optional embodiments, the second mounting portion 541 is provided with a plurality of slide grooves 5412 respectively connected to the mounting grooves 5411, and the locking structure 540 includes a plurality of locking blocks 5421 and a first elastic member 5422. Each locking block 5421 is provided in the slide groove 5412 and is movably connected to the second mounting portion 541. The first elastic member 5422 is connected between the locking block 5421 and the second mounting portion 541, and the length of the first elastic member 5422 is adjustable.

[0181] A plurality of slide grooves 5412 may be arranged at intervals around each mounting groove 5411 , and an extension direction of each slide groove 5412 intersects with the first direction X, and may be optionally perpendicular to the first direction X.

[0182] The first elastic member 5422 includes at least one of a spring, an elastic washer, a compressible elastic airbag and the like.

[0183] The shape of the end of the locking block 5421 can match the shape of the locking slot 5323 .

[0184] By providing a plurality of slide grooves 5412 connected to the mounting grooves 5411, and corresponding locking blocks 5421 and first elastic members 5422, when two adjacent tower sections 500 or the tower section 500 and the wind turbine foundation 100 are spliced, the second shaft section 5322 of the guide structure 530 is first inserted into the second mounting portion 541 through the mounting groove 5411. Since the radial dimension of at least a part of the second shaft section 5322 is larger, the first elastic member 5422 is first pushed to be compressed, and the locking blocks 5421 are pressed against the first elastic member 5422. 5421 retreats into the inside of the slide groove 5412. When the first shaft segment 5321 is inserted into the area opposite to the locking block 5421, since the radial dimension of the first shaft segment 5321 is smaller than the radial dimension of the second shaft segment 5322 toward the first shaft segment 5321, the locking block 5421 slides along the slide groove 5412 and is inserted into the slot 5323 under the action of the first elastic member 5422, locking the guide structure 530, and the assembled locking device is switched to the locked state. The locking is simple and the response is quick.

[0185] In some optional embodiments, the surface of the locking block 5421 facing away from the first elastic member 5422 in the second direction Y is an arc-shaped surface 5421a. In the locked state, each locking block 5421 extends into the guiding structure 530 along the second direction Y and each arc-shaped surface 5421a is spliced ​​in sequence and enclosed to form a circular hole.

[0186] The circular hole formed by the arc-shaped surfaces 5421a of the guiding structure 530 has the same radial size as the first shaft segment 5321, so that in the locked state, each locking block 5421 can be stuck between the first mounting portion 531 and the second shaft segment 5322 and surround the first shaft segment 5321, avoiding relative shaking between the first locking component and the second locking component, and ensuring the stability of the docking lock.

[0187] In some optional embodiments, the locking structure 540 also includes a positioning portion 5423, and the second mounting portion 541 is provided with a first slot 5413 and a second slot 5414 connected to the slide groove 5412, the first slot 5413 is located between the second slot 5414 and the mounting groove 5411, and the locking block 5421 is provided with a through hole 5421b, the positioning portion 5423 is inserted into the through hole 5421b and has freedom of movement relative to the locking block 5421; in the locked state, the positioning portion 5423 protrudes from the locking block 5421 along the first direction X and extends into the first slot 5413; in the unlocked state, the positioning portion 5423 protrudes from the locking block 5421 along the first direction X and extends into the second slot 5414.

[0188] Through the above arrangement, in the locked state, the positioning portion 5423 protrudes from the locking block 5421 along the first direction X and extends into the first slot 5413, restricting the movement of the locking block 5421 and ensuring the locking of the guide structure 530. In the unlocked state, the positioning portion 5423 protrudes from the locking block 5421 along the first direction X and inserts into the second slot 5414, separating the locking block 5421 from the guide structure 530. This allows the guide structure 530 to be smoothly removed from the second mounting portion 541 and separated from the locking structure 540. This ensures smooth unlocking of the locking structure 540 and the guide structure 530 when two adjacent tower sections 500 need to be disassembled or separated for tower maintenance, preventing the locking block 5421 from sliding into the locking slot 5323 during the unlocking process, which could affect the assembly and disassembly of the locking structure 540 and the guide structure 530.

[0189] Optionally, the first slot 5413 and the second slot 5414 may extend axially and communicate with the corresponding slide groove 5412 .

[0190] The positioning portion 5423 includes but is not limited to a rod shape, a block shape, etc.

[0191] The positioning portion 5423 may be disposed to protrude in the first direction X from the second mounting portion 541 .

[0192] In some optional embodiments, the locking structure 540 further includes a second elastic member 5424, which is disposed in the through hole 5421b and connected between the locking block 5421 and the positioning portion 5423 to drive the positioning portion 5423 to move along the first direction X.

[0193] The second elastic member 5424 includes at least one of a spring, an elastic washer, a compressible elastic airbag, etc. The second elastic member 5424 is elastically deformable in the first direction X.

[0194] By setting the second elastic member 5424, when the positioning portion 5423 is required to protrude the locking block 5421 along the first direction X and extend into the first slot 5413 or the second slot 5414, the positioning portion 5423 can be pushed to protrude the locking block 5421 and extend into the first slot 5413 or the second slot 5414 under the action of the second elastic member 5424 to ensure locking or unlocking requirements.

[0195] In some optional embodiments, the through hole 5421b includes a first hole segment, a second hole segment and a third hole segment distributed along the same reverse direction or the circumference of the tower segment, the radial dimension of the second hole segment is larger than the radial dimensions of the first hole segment and the third hole segment, the second elastic member 5424 is located in the second hole segment and is sleeved on the positioning portion 5423, one end of the second elastic member 5424 in the first direction X abuts against the second mounting portion 541, and the other end of the second elastic member 5424 in the first direction X abuts against the adapter ring 5425 connected to the positioning portion 5423.

[0196] The adapter ring 5425 can be sleeved on the positioning portion 5423 and connected to the positioning portion 5423, and welding can be used for the connection.

[0197] The through hole 5421b adopts the above-mentioned structural form, so that the second hole section can be used to place the second elastic member 5424, and the stepped surface between the second hole section and the first hole section can be used to press and limit the second elastic member 5424 at one end in the first direction X, and the stepped surface between the second hole section and the third hole section can be used to press and limit the adapter ring 5425, which is beneficial to the installation of the second elastic member 5424 and the realization of the elastic driving function of the positioning part 5423.

[0198] In some optional embodiments, the positioning portion 5423 is provided with a movable column 5423a, and a movable groove 5415 is provided on the second mounting portion 541, the movable column matches the shape of the movable groove 5415, and the positioning portion 5423 and the locking block 5421 have a first matching state and a second matching state; in the first matching state, the movable column 5423a is located in the movable groove 5415 and moves along the movable groove 5415 with the locking block 5421; in the second matching state, the movable column 5423a is separated from the movable groove 5415 and extends into the slide groove 5412, and the positioning portion 5423 is inserted into one of the first slot 5413 or the second slot 5414.

[0199] Optionally, a movable column 5423 a is correspondingly provided on the positioning portion 5423 provided on each locking block 5421 , and the movable groove 5415 can be located in the second mounting portion 541 , and the extending direction of the movable groove 5415 can be consistent with that of the sliding groove 5412 .

[0200] In the first mating state, the moving column 5423 a is located in the moving groove 5415 , so that the second elastic member 5424 is compressed and the axial end of the positioning portion 5423 is located in the locking block 5421 .

[0201] In the second mating state, the positioning part 5423 can be rotated to separate the movable column 5423a from the movable groove 5415, and the second elastic member 5424 can be released from the compression state. Under the action of the second elastic member 5424, the positioning part 5423 is pushed to axially protrude the locking block 5421 and be inserted into one of the first slot 5413 and the second slot 5414 to ensure the stability of the locked state or the unlocked state.

[0202] In some optional embodiments, the positioning portion 5423 is rod-shaped and protrudes from the second mounting portion 541 along the first direction X. A strip groove extending along the second direction Y is provided on the first mounting portion 531. In the locked state, the positioning portion 5423 extends into the strip groove 5311.

[0203] Through the above-mentioned arrangement, the positioning portion 5423 and the locking block 5421 are facilitated to switch between the first mating state and the second mating state. At the same time, the arrangement of the strip groove 5311 can not only achieve a double positioning and locking effect, but also avoid the positioning portion 5423 to avoid interference during docking.

[0204] Continuing to refer to FIG. 6 to FIG. 16 and FIG. 22 , and in combination with FIG. 1 to FIG. 5 , in some optional embodiments, an embodiment of the present application provides a construction method in which a wind turbine foundation 100 is set offshore, and step S600 includes:

[0205] A floating crane 2000 is provided with an assembly tool 600 and a crane 700. The assembly tool 600 includes a main support member 10 and an auxiliary docking member 20. The auxiliary docking member 20 includes an adjustment component 22 and a clamping component 21 connected to the adjustment component 22. The adjustment component 22 is used to adjust the position of the clamping component 21 relative to the main support member 10.

[0206] The nacelle 3 , the hub 1 and one of the tower sections 500 are installed on the main support 10 by a crane 700 .

[0207] The blades 2 are supported by the clamping assembly 21 , and the position of the clamping assembly 21 relative to the main support member 10 is adjusted by the adjusting assembly 22 so as to dock each blade 2 with the hub 1 .

[0208] The construction method provided in one embodiment of the present application, through the above-mentioned setting, can use the assembly tool 600 to assemble the cabin 3, one of the tower sections 500, the hub 1 and the blades 2 to form the head body 1000, thereby reducing the difficulty of assembly and facilitating the construction of the wind turbine generator set.

[0209] In some optional embodiments, the construction method provided in one embodiment of the present application further includes, before the step of installing the nacelle 3, the hub 1, and one of the tower segments 500 on the column 11 by the crane 700:

[0210] The nacelle 3 , the hub 1 and one of the tower sections 500 are assembled into a whole.

[0211] Due to the large size of the blades 2, the hub 1 needs to be supported at high altitude by the assembly tool 600 when the blades 2 are docked with the hub 1. The construction method provided in one embodiment of the present application, through the above arrangement, can reduce the difficulty of assembling the nose body 1000 at high altitude and reduce the operational risks.

[0212] It is understood that the above-mentioned method of assembling the nacelle 3, the hub 1, one of the tower sections 500, and the blades 2 on the floating crane 2000 to form the main body of the wind turbine head is only an optional embodiment. In some embodiments, the wind turbine foundation 100 can also be set up at sea, and step S600 includes:

[0213] An assembly tool 600 and a floating crane 2000 equipped with a crane 700 are provided, and the assembly tool 600 is connected to the tower section 500 on the wind turbine foundation 100. The assembly tool 600 includes an auxiliary docking member 20, which includes an adjustment component 22 and a clamping component 21 connected to the adjustment component 22.

[0214] One of the tower sections 500 is hoisted above the wind turbine foundation 100 by a crane 700, and one of the guide structure 530 and the locking structure 540 of the tower section 500 is locked with the other of the guide structure 530 and the locking structure 540 of the tower section 500 fixed at the top of the wind turbine foundation 100.

[0215] The end flange 520 of the tower section 500 is fixed to the end flange 520 of the tower section 500 fixed at the top of the wind turbine foundation 100 by fasteners.

[0216] The nacelle 3 and the hub 1 are sequentially hoisted and connected to the tower section 500 above the wind turbine foundation 100 by the crane 700; the nacelle 3 can be optionally connected to the tower section 500, and the hub 1 can be connected to the nacelle 3, that is, the hub 1 is indirectly connected to the tower section 500.

[0217] The blades 2 are supported by the clamping assembly 21, and the relative position of the clamping assembly 21 and the tower section 500 on the wind turbine foundation 100 is adjusted by the adjusting assembly 22 to dock each blade 2 with the hub 1. The tower section 500 connected to the nacelle 3, the nacelle 3, the hub 1 and each blade 2 are assembled into the head body 1000.

[0218] Optionally, a connection interface, such as a connection flange, may be pre-set on the tower section 500 provided on the wind turbine foundation 100, and then the assembly tool 600 may be connected to the connection interface. When the assembly is completed, the assembly tool 600 may be disassembled and separated.

[0219] An assembly method provided by an embodiment of the present application provides an assembly tool 600 and connects it to the tower section 500 on the wind turbine foundation 100. The tower section 500 formed by splicing on the wind turbine foundation 100 can be used to combine and support components such as the nacelle 3 and the hub 1, and the assembly of the blades 2 can be completed above the wind turbine foundation 100, thereby reducing construction costs, avoiding the overall towing of the wind turbine foundation 100 and the unit, and thus reducing transportation risks.

[0220] In some optional embodiments, the number of tower segments 500 is n and n≥4. Before step S600, the method further includes:

[0221] Repeat the steps of hoisting the next tower section 500 above the tower section 500 connected to the wind turbine foundation 100, locking the guide structure 530 of one of the two tower sections 500 with the locking structure 540 of the other, and securing the two adjacent locked tower sections 500 with fasteners until the n-1th tower section 500 is installed above the wind turbine foundation 100. Optionally, the value of n can be 4, 5, 6, or a larger value.

[0222] In some optional embodiments, an embodiment of the present application provides a construction method. When the assembly tool 600 includes a main support member 10, the main support member 10 includes a column 11 and a rotating component 12. The rotating component 12 includes a bearing 121 and a rotating drive member 122. The bearing 121 includes a rotating ring 1211 and a fixed ring 1212 for rotation. The fixed ring 1212 is connected to the column 11 and the rotating ring 1211 is used to connect to the cabin 3. The rotating drive member 122 is connected to the rotating ring 1211 and drives the rotating ring 1211 to rotate relative to the fixed ring 1212.

[0223] Before the steps of supporting the blade 2 by the clamping assembly 21 and adjusting the relative position of the clamping assembly 21 and the main support member 10 in at least two directions by the adjusting assembly 22 to dock the blade 2 with the hub 1, the construction method further includes:

[0224] According to the position information of the crane 700 , the rotary driving member 122 is controlled to drive the rotating circle 1211 to rotate relative to the fixed circle 1212 , so that the hub 1 is positioned toward the crane 700 .

[0225] The above arrangement facilitates the coordination between the assembly tool 600 and the crane 700, reduces the difficulty of assembling the machine head body 1000, and improves assembly efficiency and safety.

[0226] In some optional embodiments, in a construction method provided by one embodiment of the present application, a sensor 1a is provided on the wheel hub 1 and a centering sensor 40 is provided on the clamping assembly 21;

[0227] The steps of supporting the blades 2 by the clamping assembly 21 and adjusting the relative position of the clamping assembly 21 and the main support member 10 or the tower section 500 on the wind turbine foundation 100 by the adjusting assembly 22 to dock each blade 2 with the hub 1 include:

[0228] The position of the clamping assembly 21 relative to the main support 10 or the tower section 500 on the wind turbine foundation 100 is pre-adjusted by the adjusting assembly 22 so that the centering sensor 40 and the sensor 1 a are aligned for sensing.

[0229] The blade 2 is hoisted to the clamping assembly 21 by the crane 700 and clamped and fixed.

[0230] The control adjustment component 22 adjusts the clamping component 21 to drive the blade 2 to move and dock with the hub 1.

[0231] The clamping assembly 21 is controlled to release the blade 2 after docking with the hub 1 .

[0232] The control hub 1 is rotated to the next blade 2 installation position and is arranged toward the auxiliary docking member 20 .

[0233] Repeat the steps after the sensing step of pre-adjusting the clamping assembly 21 through the adjustment assembly 22 to align the centering sensor 40 with the sensor 1a, such as repeating the above-mentioned steps of controlling the clamping assembly 21 to release the blade 2 after docking with the hub 1, and controlling the hub 1 to rotate to the next blade 2 installation position toward the auxiliary docking member 20, until all blades 2 are docked with the hub 1.

[0234] Optionally, the hub 1 may include a hub web opposite to the mounting interface of the blade 2, and the sensor 1a may be arranged on the web of the hub, optionally located at the center of the hub web, that is, the sensor 1a may be located at the center of the mounting interface of the hub 1 for mounting the blade 2. Of course, this is an optional example. In some examples, the sensor 1a may also be set at a position at a predetermined distance from the center position of the hub web, which will not be explained in detail here.

[0235] Optionally, the clamping portion of the clamping assembly 21 may be annular, and the centering sensor 40 may be disposed at the top or bottom of the clamping assembly 21, or may be located on the central axis of the clamping assembly 21 in the first direction X. Of course, this is an optional embodiment, and in some embodiments, the first transmitter may be spaced a predetermined distance from the center of the clamping assembly 21.

[0236] The construction method provided in one embodiment of the present application facilitates the docking of each blade 2 with the hub 1 through the above-mentioned arrangement, thereby ensuring docking accuracy.

[0237] In some optional embodiments, the construction method provided in one embodiment of the present application,

[0238] Continuing to refer to Figures 7 to 16 and 22, and in combination with Figures 1 to 5, the adjustment assembly 22 includes a base plate 221, a lifting unit 222 that can be extended and retracted in the first direction X, and an adjustment member 621a connected to the lifting unit 222 and capable of driving the lifting unit 222 to move along a plane intersecting the first direction X. The adjustment member 621a is connected to the base plate 221, and the clamping assembly 21 is connected to the lifting unit 222.

[0239] The step of pre-adjusting the clamping assembly 21 by the adjusting assembly 22 so as to align the centering sensor 40 with the sensor 1a for sensing includes:

[0240] Obtaining a vertical distance between the centering sensor 40 and the substrate 221 in the first direction X;

[0241] When the absolute value of the first difference between the vertical distance and the first threshold is greater than zero, the lifting unit 222 is controlled to extend or shorten along the first direction X and drive the adjustment component 22 to move until the absolute value of the first difference is equal to zero;

[0242] The control and adjustment component 22 drives the lifting unit 222 and the clamping component 21 to move along the third direction Z until the first emitter and the sensor 1a are aligned and sensed in the second direction Y. The first direction X, the second direction Y and the third direction Z are intersected.

[0243] Optionally, the first threshold includes but is not limited to a vertical distance between the sensor 1 a and the substrate 221 in the first direction X.

[0244] Optionally, when the centering sensor 40 is opposite to the sensor 1a and is set for sensing, the center of the clamping assembly 21 can be opposite to the center of the mounting interface or the web of the hub 1 by adjusting the length of the lifting unit 222 in the first direction X.

[0245] Optionally, the planar movement intersecting the first direction X can be understood as multi-directional movement in the plane, such as movement in the second direction Y and the third direction Z.

[0246] Optionally, the angles at which the first direction X, the second direction Y, and the third direction Z intersect each other may be 80°-100°, or optionally 90°, that is, the three directions may be perpendicular to each other.

[0247] The construction method provided in one embodiment of the present application facilitates the initial adjustment of the height of the clamping assembly 21 through the above-mentioned setting, so that the centering sensor 40 and the sensor 1a are set at the same height, and then the adjustment component is controlled to drive the lifting unit 222 and the clamping assembly 21 to move along the second direction Y, so that the centering sensor 40 and the sensor 1a are centered in the third direction Z. The clamping assembly 21 can be located in front of the area to be installed of the wheel hub 1, which is conducive to ensuring the centering requirement between the centering sensor 40 and the sensor 1a.

[0248] In some optional embodiments, a second transmitter 410 is provided on the blade 2, and the steps of controlling the adjustment component 22 to adjust the clamping component 21 to drive the blade 2 and dock with the hub 1 include:

[0249] Control the lifting unit 222 to move up and down until the second emitter 410 and the sensor 1a are aligned for sensing;

[0250] The control adjusting member 621 a drives the lifting unit 222 to move along the second direction Y, so that the blade 2 is docked with the hub 1 .

[0251] According to one aspect of an embodiment of the present application, before the step of controlling the adjusting member 621a to drive the lifting unit 222 to move along the second direction Y so that the blade 2 is docked with the hub 1, the method further includes:

[0252] Obtaining the heave amplitude of the blade 2 in the first direction X and the heave amplitude of the hub 1 in the first direction X;

[0253] When the absolute value of the second difference between the lift amplitude of the blade 2 and the lift amplitude of the hub 1 is greater than zero, the lifting unit 222 is controlled to extend or shorten and drive the clamping assembly 21 to move until the displacement of the clamping assembly 21 in the first direction X is equal to the absolute value of the second difference, and then the lifting unit 222 is controlled to stop extending or shortening.

[0254] When the assembly tool 600 is used in the assembly of offshore wind turbines and is assembled directly in the area where the wind turbines are to be put into service, the floating vessel or wind turbine foundation 100 used to place the assembly tool 600 is in a floating state in the sea. Accordingly, due to the shaking of the floating vessel or wind turbine foundation 100, the hub 1 and the blade 2 will also be in a different shaking state. Through the above-mentioned setting, it can be ensured that the center of the web at the root of the blade 2 is always completely aligned with the center of the hub 1 of the head, reducing the difficulty of splicing and improving the docking accuracy.

[0255] In some optional embodiments, a control method provided in one embodiment of the present application includes the step of obtaining the heave amplitude of the blade 2 in the first direction X and the heave amplitude of the hub 1 in the first direction X, including:

[0256] Obtaining the heave acceleration of the blade 2 in the first direction X and the heave acceleration of the hub 1 in the first direction X;

[0257] Determining the heave speed of the blade 2 according to the heave acceleration of the blade 2 and determining the heave speed of the hub 1 according to the heave acceleration of the hub 1;

[0258] The heave amplitude of the blade 2 is determined according to the heave speed of the blade 2 , and the heave amplitude of the hub 1 is determined according to the heave speed of the hub 1 .

[0259] Optionally, acceleration sensors may be provided on the main support member 10 or the wind turbine foundation and the docking member to obtain the heave acceleration of the blade 2 in the first direction X and the heave acceleration of the hub 1 in the first direction X.

[0260] The heave acceleration data of the blade 2 in the first direction X and the heave acceleration data of the hub 1 in the first direction X can be processed to calculate the heave velocity of the blade 2 and the heave velocity of the hub 1 through a single integration. The heave amplitude of the blade 2 and the heave amplitude of the hub 1 are then calculated through a second integration.

[0261] The heave amplitude of the blade 2 in the first direction X and the heave amplitude of the hub 1 in the first direction X measured in the above manner are quick and accurate, which helps to ensure that the blade 2 and the hub 1 always maintain the alignment requirement in the second direction Y before docking.

[0262] In some optional embodiments, a control method provided in one embodiment of the present application includes the steps of controlling the lifting unit 222 to extend or shorten along the first direction X and drive the clamping assembly 21 to move, when the absolute value of the second difference between the heave amplitude of the blade 2 and the heave amplitude of the hub 1 is greater than zero, until the displacement of the clamping assembly 21 in the first direction X is equal to the absolute value of the second difference, and then controlling the lifting unit 222 to stop extending or shortening, including:

[0263] When the second difference is greater than zero, the lifting unit 222 is controlled to shorten and drive the clamping assembly 21 downward until the displacement of the clamping assembly 21 in the first direction X is equal to the absolute value of the second difference, and then the lifting unit 222 is controlled to stop shortening;

[0264] When the second difference is less than zero, the lifting unit 222 is controlled to extend and drive the clamping assembly 21 to rise until the displacement of the clamping assembly 21 in the first direction X is equal to the absolute value of the second difference, and then the lifting unit 222 is controlled to stop extending.

[0265] When the second difference is greater than zero, that is, the heave amplitude of the blade 2 is greater than the heave amplitude of the hub 1, the lifting unit 222 is controlled to shorten, and the displacement value of the end where the lifting unit 222 is connected to the clamping assembly 21 is detected and compared with the absolute value of the second difference. If the displacement value is the same as the absolute value of the second difference, the lifting unit 222 is controlled to stop and the lifting unit 222 is no longer shortened. If there is still a deviation between the displacement value and the absolute value of the second difference, the lifting unit 222 is controlled to continue to move and the lifting unit 222 is continued to shorten. During the shortening process, the displacement value of the end where the lifting unit 222 is connected to the clamping assembly 21 can be continuously obtained and compared with the absolute value of the second difference. Until the measured displacement value is the same as the absolute value of the second difference, the lifting unit 222 is controlled to stop extending.

[0266] When the second difference is less than zero, meaning the heave amplitude of blade 2 is lower than the heave amplitude of hub 1, lifting unit 222 is controlled to extend. The displacement value at the end of lifting unit 222 connected to clamping assembly 21 is detected and compared with the absolute value of the second difference. If the displacement value and the absolute value of the difference are the same, lifting unit 222 is controlled to stop and no longer extend. If there is still a deviation between the displacement value and the absolute value of the second difference, lifting unit 222 is controlled to continue operating and extend. During the extension process, the displacement value at the end of lifting unit 222 connected to clamping assembly 21 is continuously obtained and compared with the absolute value of the second difference. When the measured displacement value and the absolute value of the second difference are the same, lifting unit 222 is controlled to stop falling. In this way, the heave compensation function of lifting unit 222 ensures that the root center of blade 2 is always completely aligned with the web center of hub 1.

[0267] Optionally, the construction method provided in one embodiment of the present application involves a clamping assembly 21 of an assembling tool 600, which may include a fixed support 211, a first driving member 212, and a pair of clamping units 213, wherein the pair of clamping units 213 are relatively distributed on both sides of the fixed support 211 and are respectively rotatably connected to the fixed support 211, and the first driving member 212 is connected between the clamping unit 213 and the fixed support 211.

[0268] The first driving member 212 is extended or shortened to realize the rotation between the clamping unit 213 and the fixed support 211 , thereby realizing the opening or release of the clamping assembly 21 .

[0269] Optionally, the adjustment member 621a may include a first adjustment unit 223 and a second adjustment unit 224, wherein the first adjustment unit 223 is connected between the second adjustment unit 224 and the lifting unit 222, the clamping assembly 21 is connected to the lifting unit 222, the overall length of the lifting unit 222 in the first direction X is adjustable, and the first adjustment unit 223 is at least partially capable of driving the lifting unit 222 to move relative to the substrate 221 along the second direction Y. The second adjustment unit 224 is at least partially capable of driving the first adjustment unit 223 and the lifting unit 222 to move relative to the substrate 221 along the third direction Z.

[0270] The base plate 221 is used to support the first adjusting unit 223 , the second adjusting unit 224 and the lifting unit 222 .

[0271] Optionally, the base plate 221 can be connected to the main support member 10 or the wind turbine foundation 100, and can be connected to the main support member 10 by welding or other methods, or can be connected to the main support member 10 or the wind turbine foundation 100 by a detachable connection method. Optionally, a reinforcing connector can be provided between the base plate 221 and the main support member 10.

[0272] The first direction X may be selected as the height direction of the main support member 10 , and the third direction Z, the second direction Y, and the first direction X intersect and may be selected to be perpendicular to each other.

[0273] By making the adjustment component 22 include a base plate 221, an adjustment part 621a and a lifting unit 222, the position of the blade 2 in the first direction X can be adjusted by adjusting the length of the lifting unit 222 in the first direction X. At the same time, the lifting unit 222 can be driven by the first adjustment unit 223 to move along the second direction Y, thereby driving the blade 2 to move along the second direction Y, which is conducive to docking with the hub 1, specifically, docking with the bearing 121 on the hub 1.

[0274] Optionally, the second direction Y may be the axial direction of the pitch bearing corresponding to the hub 1 to be docked.

[0275] Optionally, the lifting unit 222 includes a lifting arm 2221 arranged in a pair and a third driving member 2222, the lifting arm 2221 includes a first arm and a second arm rotatably connected to each other, the first arm is connected to the first adjustment unit 223, and the second arm is connected to the clamping assembly 21, and the third driving member 2222 is connected between the lifting arms 2221 arranged in a pair and drives the first arm and the second arm to rotate relative to each other to adjust the length of the lifting unit 222 in the first direction X.

[0276] Optionally, the lifting unit 222 adopts the above-mentioned structural form. When the third driving member 2222 drives the first arm and the second arm to rotate relative to each other, the overall height of the lifting unit 222 can be adjusted by adjusting the angle between the first arm and the second arm, thereby ensuring the length of the lifting unit 222 in the first direction X and realizing the position adjustment requirement of the blade 2 in the first direction X.

[0277] It can be understood that the above-mentioned form of the lifting unit 222 is only an optional embodiment. In some embodiments, the lifting unit 222 can also include a telescopic part, one of the cylinder body and the cylinder rod of the telescopic part is connected to the clamping assembly 21 and the other is connected to the first adjustment unit 223. By controlling the extension and shortening of the telescopic part, the length adjustment requirement of the lifting unit 222 can also be guaranteed, thereby meeting the position adjustment requirement of the blade 2 in the first direction X.

[0278] In some optional embodiments, the first adjustment unit 223 may include a first movable platform 2231, a first guide 2232, and a fourth drive member 2233. The first guide 2232 extends along the third direction Z. The first movable platform 2231 and the first guide 2232 are movably connected, optionally with a sliding connection. The fourth drive member 2233 is connected to the first movable platform 2231 and drives the first movable platform 2231 to reciprocate relative to the first guide 2232 along the third direction Z. The lifting unit 222 is connected to the first movable platform 2231. The first guide 2232 may be directly or indirectly connected to the base plate 221.

[0279] Optionally, the second adjustment unit 224 may include a second movable platform 2241, a second guide member 2242, and a fifth driving member 2243. The second guide member 2242 extends along the third direction Z. The second movable platform 2241 is movably connected to the second guide member 2242, optionally in a sliding connection. The fifth driving member 2243 is connected to the first movable platform 2231 and drives the second movable platform 2241 to reciprocate along the third direction Z relative to the second guide member 2242.

[0280] The second adjustment unit 224 adopts the above-mentioned form, which has a simplified structure and can ensure the movement requirements of the clamping assembly 21 and the blade 2 clamped and fixed therein in the third direction Z.

[0281] In some optional implementations, the construction method provided in one embodiment of the present application further includes, when the blade 2 is damaged, removing the fasteners connecting the end flange 520 of the tower section 500 of the head body 1000 and the end flange 520 of the tower section 500 fixed to the uppermost part of the wind turbine foundation 100;

[0282] One of the guide structure 530 and the locking structure 540 of the tower section 500 of the control head body 1000 and the other of the guide structure 530 and the locking structure 540 of the tower section 500 fixed at the top of the wind turbine foundation 100 are in an unlocked state, and the head body 1000 is hoisted so that the head body 1000 is disassembled as a whole to the assembly tool 600 of the floating crane 2000 for replacing the blade 2.

[0283] Through the above arrangement, damaged parts can be maintained and replaced while the wind turbine foundation 100 is in the area, without the need to tow the entire wind turbine generator set to the dock for replacement of major components, thereby reducing maintenance costs and difficulty and improving maintenance safety.

[0284] The construction method provided in one embodiment of the present application has the following advantages:

[0285] 1. By adopting the construction methods provided in the above embodiments, a large-capacity wind turbine generator set can be hoisted onto the floating wind turbine foundation 100 using a floating crane 2000 at an offshore machine site, thereby ensuring the feasibility of future deep-sea large-capacity wind turbine generator set construction methods.

[0286] 2. By adopting the construction methods provided in the above embodiments, there is no need to select a large-sized and large-tonnage dock crane 700 at the dock, nor is there any need to occupy dock resources to transform the dock's bearing capacity, nor is there any need to be limited by jack-up platform resources due to the project's water depth. This can greatly reduce the construction cost of large-capacity wind turbine generator sets. At the same time, when installing wind turbine generator sets at sea, there is no need to tow the wind turbine foundation 100 and the unit as a whole, which greatly reduces the towing cost and the uncertainty risks during the towing process (such as typhoon interference).

[0287] 3. The construction methods provided in the above embodiments can also take into account the replacement of large components of deep-sea floating units in the later stage, especially the replacement of blades 2. The head, three blades 2 and the top tower can be hoisted onto the floating crane 2000 to replace the blades 2, and then the replaced whole machine can be hoisted onto the floating body foundation, ensuring the feasibility of replacing large components of deep-sea floating units. There is no need to adopt the existing method of towing the entire floating body and wind turbine to the dock for replacement of large components, which greatly reduces the maintenance cost of the floating unit.

[0288] 4. The construction methods provided in the above embodiments can also be used for future offshore construction of deep-sea fixed units, using a floating crane 2000 for lifting and operation.

[0289] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. An assembly tool for assembling a hub and a blade, wherein: The assembly tooling comprises: A main support member having a predetermined height along a first direction, wherein one end of the main support member in the first direction is configured to support the hub and the other end is configured to be connected to the carrier; The auxiliary docking member includes an adjusting component and a clamping component, wherein the clamping component has a clamping cavity that passes through along a second direction to accommodate and fix the blade, and the adjusting component is connected to the clamping component and can adjust the relative position of the clamping component and the main support member in at least two directions to align the blade with the hub, and the second direction intersects with the first direction.

2. The assembly tool according to claim 1, wherein: The clamping assembly includes a fixed support, a first driving member and clamping units arranged in pairs, the clamping units arranged in pairs are relatively distributed on both sides of the fixed support and are respectively rotatably connected to the fixed support, the fixed support and the clamping units arranged in pairs enclose to form the clamping cavity, the first driving member is connected between the clamping unit and the fixed support and can drive the clamping unit to rotate relative to the fixed support to clamp or release the blade.

3. The assembly tool according to claim 2, wherein: The first driving member includes a first telescopic cylinder, one of a cylinder body and a cylinder rod of the first telescopic cylinder is rotatably connected to the clamping unit, and the other of the cylinder body and the cylinder rod of the first telescopic cylinder is rotatably connected to the adjusting assembly.

4. The assembly tool according to claim 2, wherein: The clamping unit includes a fixed frame, a clamping block and a second driving member, the fixed frame is rotatably connected to the fixed support, the first driving member is connected to the fixed frame, the clamping block is located on the side of the clamping units arranged in pairs facing each other, the fixed frame is provided with an avoidance opening, the second driving member is partially inserted into the avoidance opening and connected to the clamping block, the clamping block is configured to contact the blade, and the second driving member drives the clamping block to move relative to the fixed support to clamp and fix the blade.

5. The assembly tool according to claim 4, wherein: The second driving member includes a power source and an adjusting member. The adjusting member partially passes through the avoidance opening and is universally connected to the clamping block. The power source drives the adjusting member to move and adjusts the depth of the adjusting member inserted into the avoidance opening and extending into the inner side of the fixed frame.

6. The assembly tool according to claim 5, wherein: The clamping block is an arc-shaped block, and a pressure sensor is provided on the surface of the clamping block facing away from the fixed frame. The power source adjusts the depth of the adjustment member inserted into the inner side of the fixed frame through the avoidance according to the pressure information of the clamping block acting on the blade fed back by the pressure sensor.

7. The assembly tool according to claim 1, wherein: The adjustment assembly includes a substrate, a first adjustment unit and a lifting unit, the first adjustment unit is connected between the substrate and the lifting unit, the clamping assembly is connected to the lifting unit, the overall length of the lifting unit in the first direction is adjustable, and the first adjustment unit can at least partially drive the lifting unit to move relative to the substrate along the second direction.

8. The assembly tool according to claim 7, wherein: The lifting unit comprises lifting arms arranged in pairs and a third driving member, the lifting arms comprise a first arm and a second arm rotatably connected to each other, the first arm is connected to the first adjustment unit, the second arm is connected to the clamping assembly, and the third driving member is connected between the lifting arms arranged in pairs and drives the first arm and the second arm to rotate relative to each other, so as to adjust the length of the lifting unit in the first direction; And / or, the lifting unit comprises a second telescopic cylinder, one of a cylinder body and a cylinder rod of the second telescopic cylinder is connected to the clamping assembly and the other is connected to the first adjusting unit.

9. The assembly tool according to claim 7, wherein: The adjustment component also includes a second adjustment unit, the first adjustment unit is connected to the substrate through the second adjustment unit, and the second adjustment unit can at least partially drive the first adjustment unit to move relative to the substrate along a third direction as a whole, and the third direction intersects with the first direction and the second direction.

10. The assembly tool according to claim 7, wherein: The base plate is connected to the main support member, and a reinforcing connection member is arranged between the base plate and the main support member.

11. The assembly tool according to any one of claims 1 to 10, wherein: The main support member includes a column and a rotating assembly, the rotating assembly includes a bearing and a rotating drive member, the bearing includes a rotating ring and a fixed ring that are rotatably matched, the fixed ring is connected to the column and the rotating ring is used to connect to a nacelle connected to the wheel hub, and the rotating drive member is connected to the rotating ring and drives the rotating ring to rotate relative to the fixed ring.

12. The assembly tool according to any one of claims 1 to 10, wherein: The clamping assembly is provided with a centering sensor, and the centering sensor is configured to feed back centering information between the blade and the hub.

13. The assembly tool according to any one of claims 1 to 10, wherein: The adjustment component is provided with a first acceleration sensor, which is configured to feed back the heave acceleration of the auxiliary docking member. The main support member is provided with a second acceleration sensor, which is configured to feed back the heave acceleration of the main support member.

14. A construction method for a wind turbine generator set, wherein: include: Transporting the nacelle, the hub, the plurality of blades and the plurality of tower sections to the area where the wind turbine foundation is located, wherein the tower section comprises a barrel body provided with end flanges at both axial ends thereof and at least one of a guide structure and a locking structure provided on the barrel body, wherein the locking structure can be locked with the guide structure, and one of the guide structure and the locking structure is provided on the wind turbine foundation; Hoisting a tower section above the wind turbine foundation and locking one of the guide structure and the locking structure disposed on the tower section with the other of the guide structure and the locking structure disposed on the wind turbine foundation; Fix the locked end flange of the tower section to the wind turbine foundation through fasteners; Hoisting the next tower section to the top of the tower section connected to the wind turbine foundation and locking the guiding structure of one of the two tower sections with the locking structure of the other; Fixing the two adjacent locked tower sections by fasteners; A nacelle, a hub, a plurality of blades, and one of the tower sections are connected to the tower section on the wind turbine foundation.

15. The construction method according to claim 14, wherein: The step of connecting the nacelle, the hub, the plurality of blades and one of the tower sections to the tower section on the wind turbine foundation comprises: Assembling the nacelle, the hub, the plurality of blades and one of the tower sections into a nose body; The head body is hoisted above the wind turbine foundation, and the tower of the head body is One of the guiding structure and the locking structure of the tower section is locked and matched with the other of the guiding structure and the locking structure of the tower section fixed at the top of the wind turbine foundation; The end flange of the tower section of the head body is fixed to the end flange of the tower section fixed at the top of the wind turbine foundation by fasteners.

16. The construction method according to claim 15, wherein: The number of tower sections is n and n≥4. Before the step of hoisting the head body above the wind turbine foundation, the method further includes: Repeat the steps of hoisting the next tower section above the tower section connected to the wind turbine foundation and locking the guide structure of one of the two tower sections with the locking structure of the other, and fixing the two adjacent locked tower sections with fasteners, until the n-1th tower section is installed above the wind turbine foundation.

17. The construction method according to claim 15, wherein: The guiding structure includes a plurality of guiding units spaced apart from each other, the locking structure includes a plurality of locking units spaced apart from each other, the locking unit includes an installation groove and a locking portion located in the installation groove, and the guiding unit can at least partially extend into the installation groove of the adjacent locking unit and be locked by the locking portion.

18. The construction method according to claim 15, wherein: The wind turbine foundation is arranged at sea, and the step of assembling the nacelle, the hub, the plurality of blades and one of the tower sections into a head body comprises: A floating crane vessel is provided with an assembling tool and a crane, wherein the assembling tool comprises a support member and an auxiliary docking member, wherein the auxiliary docking member comprises an adjustment component and a clamping component connected to the adjustment component, and the adjustment component is used to adjust the position of the clamping component relative to the support member; Installing the nacelle, the hub and one of the tower sections onto the support by means of the crane; The blades are supported by the clamping assembly, and the position of the clamping assembly relative to the support is adjusted by the adjusting assembly so as to dock the blades with the hub.

19. The construction method according to claim 18, wherein: Before the step of installing the nacelle, the hub and one of the tower sections onto the column by the crane, the method further comprises: The nacelle, the hub and one of the tower sections are assembled into a whole.

20. The construction method according to claim 18, wherein: The support member includes a column and a rotating assembly, the rotating assembly includes a bearing and a rotating drive member, the bearing includes a rotating ring and a fixed ring that are rotatably matched, the fixed ring is connected to the column and the rotating ring is used to connect to the cabin, and the rotating drive member is connected to the rotating ring and drives the rotating ring to rotate relative to the fixed ring; Before the step of supporting the blade by the clamping assembly and adjusting the relative position of the clamping assembly and the support member in at least two directions by the adjusting assembly to dock the blade with the hub, the construction method further includes: The rotary drive member is controlled according to the position information of the crane to drive the rotating circle to rotate relative to the fixed circle, so that the wheel hub is arranged toward the crane.

21. The construction method according to claim 14, wherein: The wind turbine foundation is arranged at sea, and the step of connecting the nacelle, the hub, the plurality of blades and one of the tower sections to the tower section on the wind turbine foundation comprises: Providing an assembly tool and a floating crane equipped with a crane, connecting the assembly tool to the tower section on the wind turbine foundation; the assembly tool includes an auxiliary docking piece, and the auxiliary docking piece includes an adjustment component and a clamping component connected to the adjustment component; Hoist one of the tower sections to the top of the wind turbine foundation by a crane, and lock one of the guide structure and the locking structure of the tower section with the other of the guide structure and the locking structure of the tower section fixed at the top of the wind turbine foundation; Fixing the end flange of the tower section to the end flange of the tower section fixed at the top of the wind turbine foundation by fasteners; The nacelle and the hub are sequentially hoisted and connected to the tower section above the wind turbine foundation by a crane; The blades are supported by the clamping assembly, and the relative position of the clamping assembly and the tower section on the wind turbine base is adjusted by the adjusting assembly to dock each blade with the hub. The tower section connected to the nacelle, the nacelle, the hub and each blade are assembled into a head body.

22. The construction method according to claim 21, wherein: The number of the tower sections is n and n≥4. Before the step of connecting the nacelle, the hub, the plurality of blades and one of the tower sections to the tower section on the wind turbine foundation, the method further comprises: Repeat the steps to hoist the next tower section to the top of the tower section connected to the wind turbine foundation. The steps of locking and matching the guide structure of one of the two tower sections with the locking structure of the other and fixing the two adjacent locked tower sections with fasteners are performed until the n-1th tower section is installed above the wind turbine foundation.

23. The construction method according to claim 18 or 21, wherein: The wheel hub is provided with a sensor, and the clamping assembly is provided with a first transmitter; The step of supporting the blades by the clamping assembly and adjusting the relative position of the clamping assembly and the support member or the tower section on the wind turbine foundation by the adjusting assembly to dock each blade with the hub comprises: Pre-adjusting the position of the clamping assembly relative to the support member by the adjusting assembly so that the first emitter and the sensor can be centered for sensing; Hoist the blade to the clamping assembly by a crane for clamping and fixing; Control the adjusting assembly to adjust the clamping assembly to drive the blade to move and dock with the hub; Controlling the clamping assembly to release the blade after docking with the hub; Controlling the wheel hub to rotate to the next blade installation position and to be arranged toward the auxiliary docking piece; Repeat the steps after the step of pre-adjusting the clamping assembly by the adjusting assembly to align the first emitter with the sensor until all blades are docked with the hub.

24. The construction method according to claim 23, wherein: The adjusting assembly includes a base plate, a lifting unit that can be extended and retracted in a first direction, and an adjusting member connected to the lifting unit and capable of driving the lifting unit to move along a plane intersecting the first direction, the adjusting member is connected to the base plate, and the clamping assembly is connected to the lifting unit; The step of pre-adjusting the clamping assembly by the adjusting assembly to make the first emitter and the sensor align for sensing comprises: Acquire a vertical distance between the first emitter and the substrate in a first direction; When the absolute value of the first difference between the vertical distance and the first threshold is greater than zero, controlling the lifting unit to extend or shorten along the first direction and driving the adjustment component to move until the absolute value of the first difference is equal to zero; Control the adjusting component to drive the lifting unit and the clamping component to move along the third direction until the first transmitter and the sensor are aligned in the second direction. The second direction and the third direction are arranged to intersect.

25. The construction method according to claim 24, wherein: The blade is provided with a second transmitter, and the step of controlling the adjusting component to adjust the clamping component to drive the blade to dock with the hub includes: Controlling the lifting unit to move up and down until the second transmitter and the sensor are aligned for sensing; The adjusting member is controlled to drive the lifting unit to move along the second direction so that the blade is docked with the hub.

26. The construction method according to claim 25, wherein: Before the step of controlling the adjusting member to drive the lifting unit to move along the second direction so that the blade is docked with the hub, the method further includes: Acquire the heave amplitude of the blade in the first direction and the heave amplitude of the hub in the first direction; When the absolute value of the second difference between the lift amplitude of the blade and the lift amplitude of the hub is greater than zero, the lifting unit is controlled to extend or shorten and drive the clamping assembly to move until the displacement of the clamping assembly in the first direction is equal to the absolute value of the second difference, and the lifting unit is controlled to stop extending or shortening.

27. The construction method according to any one of claims 14 to 26, wherein: The construction method also includes: When the blade is damaged, the fasteners connecting the end flange of the tower section of the head body and the end flange of the tower section fixed at the top of the wind turbine foundation are removed; The guide structure of the tower section of the head body and one of the locking structures are controlled to be in an unlocked state with the other of the guide structure of the tower section fixed at the top of the wind turbine foundation, and the head body is hoisted so that the head body can be disassembled as a whole to the assembly tooling of the floating crane for blade replacement.

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