Sectional type fan blade and transportation method thereof

Abstract

The invention provides a sectional type fan blade and a transportation method thereof. The sectional type fan blade comprises a blade root, the blade root is provided with a framework, and the framework is provided with a plurality of blade sections; the blade sections are connected with the framework through mounting pieces; the blade root is used for connecting a wind driven generator hub; a soft cushion is arranged at the joint of every two adjacent blade sections; the blade section is cylindrical, and the framework penetrates through the blade section. According to the sectional type fan blade, large transportation equipment does not need to be used during transportation, the road environment does not need to be changed during land transportation, the transportation efficiency is higher, the influence of the environment is smaller, and the transportation cost is lower; the fan blade framework and the fan blade are produced and machined in a sectional mode, the machining mode is simple, a large mold does not need to be used, and therefore the machining cost is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of fan blades, and in particular to a segmented fan blade and a transportation method thereof. Background Art

[0002] Wind turbine blades are one of the core components of wind turbines, accounting for about 15%-20% of the total cost of the wind turbine. The quality of its design will be directly related to the performance and benefits of the wind turbine.

[0003] In the production process of fan blades, in order to ensure their performance, an integral molding method is generally adopted. First, a large mold needs to be processed according to the design requirements, and then the fan blades are formed by the mold. Finally, the fan blades are transported to the machine site as a whole. In this process, large molds are required for processing, and the processing cost is relatively high. Large transportation equipment is also required in the process of transporting the fan, and the transportation cost is also relatively high. Summary of the invention

[0004] The main purpose of the present invention is to provide a segmented fan blade and a transportation method thereof, so as to solve the problem that the processing cost and transportation cost of the existing fan blades are both high.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: A segmented fan blade comprises a blade root, the blade root is provided with a frame, and the frame is provided with a plurality of blade segments; The blade segment is connected to the frame via a mounting piece; The blade root is used to connect to the wind turbine hub.

[0006] In a preferred embodiment, a soft cushion is provided at the connection between adjacent blade segments; The leaf segments are tubular, and the skeleton passes through the leaf segments.

[0007] In a preferred embodiment, the skeleton includes a plurality of keels, the cross section of the keel is H-shaped, and one end of the keel is fixedly connected to the blade root; The mounting piece is connected to the keel; A plurality of first connecting plates are provided between adjacent keels, the first connecting plates are provided with vertical plates, and the vertical plates are provided with supporting plates; Cables are connected between the support plates in the same row along the length direction of the keel.

[0008] In a preferred solution, a plurality of keels are combined into a large keel, and the plurality of large keels are arranged side by side, and one end of the large keel is fixedly connected to the blade root; Adjacent keels of the same large keel are connected by connecting pieces; The connecting member comprises a second connecting plate connected to the keel, the second connecting plate is located at the end of the keel, and the top surface of the second connecting plate is in the same plane as the top surface of the first connecting plate; The second connecting plate is connected between two keels of adjacent large keels; The second connecting plate is provided with a fixing plate, and two adjacent fixing plates are fitted to each other; Among the two fitted fixing plates, one fixing plate is provided with a plurality of positioning holes on one side, and nuts are provided in the positioning holes; the other fixing plate is provided with a plurality of rotating blocks on one side, and a hexagonal hole is provided on one side of the rotating block; a connecting rod is provided on the other side of the rotating block, and the connecting rod extends from the fixing plate to the other fixing plate; the connecting rod is provided with a threaded rod, the threaded rod passes through the nut, and the threaded rod is threadedly connected with the nut; A positioning rod is provided in the second connecting plate; A cable is provided between the fixing plate and the supporting plate; The cable is in a straightened state.

[0009] In a preferred solution, the mounting member includes a connecting buckle connected to the keel, a connecting block is provided on a side of the connecting buckle away from the keel, and the connecting block is connected to the blade segment through a connecting frame; A fixed rod is provided between the connecting blocks connected to the same blade segment, and a movable rod is slidably connected inside the fixed rod; A positioning groove is provided on the side of the keel, a positioning block is slidably connected in the positioning groove, and the positioning block extends into the connecting buckle; A guide seat is provided on one side of the positioning block away from the keel, and the guide seat extends into the interior of the connecting block; The movable rod is provided with a guide block, the guide block is in close contact with the guide seat, and the contact surface between the guide block and the guide seat is an inclined surface; A guide groove is provided in the guide seat, and a guide rail is provided in the guide block. The guide rail is matched with the guide groove, and the cross section of the guide rail is T-shaped; The end of the fixed rod is threadedly connected with a threaded column, one end of the threaded column is provided with a cushion block, the cushion block abuts against the movable rod, and the other end of the threaded column is provided with a knob; The blade segment of the head is provided with an operation hole.

[0010] In a preferred solution, the connecting frame includes a supporting frame arranged in the blade segment, the supporting frame is provided with a supporting rod, and the supporting rod is connected to the connecting block; The connecting block is provided with a fixing block, and the end of the supporting rod is provided with a connecting groove, and the fixing block is adapted to the connecting groove; The fixing block is connected to the supporting rod through a pin bolt.

[0011] In a preferred solution, a plurality of connecting buckles are slidably connected to both sides of the keel; When the connecting buckle slides along the keel, the connecting buckle will not touch the first connecting plate, the second connecting plate, the fixing plate, the vertical plate, the supporting plate and the cable.

[0012] A method for transporting segmented fan blades comprises the following steps: S1. Process the skeleton and blades according to the drawings of the fan blades to form segmented skeletons and blades; S2, transporting the segmented skeleton and blades to a land work site by a transport vehicle; or Transporting the segmented skeleton and blades to the coast by transport vehicles; S3, assembling the skeleton and the blades to form a complete fan blade; or Assemble the skeleton and blades on the transport ship to form a complete wind turbine blade, and transport the wind turbine blade to the offshore work site by the transport ship; S4. Install the fan blades.

[0013] In a preferred embodiment, in S1, the skeleton processing process includes: S111. Arrange the keels of one section of the skeleton side by side according to the drawing; S112, welding the connecting plate between the keels; S113, the two sides of the connecting plate are welded to support and reinforce the plate body; A plurality of through holes are provided in the plate body located at the edge of the keel; S114, welding cables between plates; S115, repeat S111-S114 until the skeletons of all segments are processed; The processing of the skeleton is completed through the above steps, wherein the end of the skeleton connected to the hub of the wind turbine generator is welded to the root of the wind turbine blade; The blade processing includes: S121. Design the mold according to the drawing; S122, processing the segmented blades through a mold; S123, the processing is completed, and blades of all segments are obtained; S124, connecting parts welded inside the blade and connected to the frame.

[0014] In a preferred solution, in S3, the combination process includes: S31, connecting the blade segment close to the root of the fan blade to the frame through a connecting piece; S32, connecting the next skeleton section to the previous skeleton section; S33, connecting the next section of blades to the frame through a connecting piece; S34, repeat S32-S33 until the assembly is completed; At the connection between the frames, the plates at the ends of the frames are connected by bolts and nuts, and the bolts pass through the reserved through holes.

[0015] The present invention provides a segmented fan blade and a transportation method thereof. By adopting the above scheme, the following beneficial effects are achieved: 1. There is no need to use large-scale transportation equipment during transportation, and there is no need to change the road environment during land transportation. The transportation efficiency is higher, the impact on the environment is smaller, and the transportation cost is lower.

[0016] 2. The fan blade skeleton and blades are produced and processed in a segmented manner. The processing method is simple and does not require the use of large molds, thereby greatly reducing the processing cost.

[0017] 3. The operation is simple and the connection is convenient during assembly, which increases the efficiency of assembly.

[0018] 4. Subsequent maintenance and replacement can be carried out in sections, and only the damaged part can be replaced in case of partial damage, thus reducing the replacement cost.

[0019] 5. During operation, the rotational torque is transmitted through the skeleton rather than the blades, so the processing requirements for the blade segments can be reduced, which reduces the processing cost of the blades, reduces the design difficulty, and can better meet the use requirements in extreme climates. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a structural schematic diagram of a segmented fan blade of the present invention; Figure 2 It is a schematic structural diagram of a segmented fan blade part connection of the present invention; Figure 3 It is a schematic diagram of the structure of the skeleton of the present invention; Figure 4 yes Figure 2 A schematic diagram of the enlarged structure at the middle left end; Figure 5 yes Figure 3 A schematic diagram of the enlarged structure at the middle left end; Figure 6 is a schematic structural diagram of the connecting piece of the present invention; Figure 7 is a schematic cross-sectional structural diagram of the connecting piece of the present invention; Figure 8 is a side sectional view of the mounting member of the present invention; Fig. 9 is a schematic diagram of the structure of the mounting member of the present invention; Fig.10 is a schematic diagram of an enlarged cross-sectional structure of a mounting member of the present invention from a side view; Fig.11 is an enlarged structural schematic diagram of the mounting member of the present invention; Fig.12 is a schematic structural diagram of the connection of the blade segments of the present invention; Fig.13It is a schematic diagram of the head connection structure of a segmented fan blade of the present invention.

[0021] In the figure: Blade root 1, skeleton 2, keel 201, first connecting plate 202, connecting piece 203, second connecting plate 231, fixing plate 232, positioning hole 233, nut 234, threaded rod 235, connecting rod 236, rotating block 237, hexagonal hole 238, positioning rod 239, vertical plate 204, support plate 205, cable 206, blade segment 3, cushion 301, operating hole 302, mounting piece 4, connecting buckle 401, connecting block 402, fixing rod 403, positioning groove 404, positioning block 405, guide seat 406, movable rod 407, guide block 408, guide rail 409, threaded column 410, cushion block 411, knob 412, fixing block 421, pin bolt 422, connecting frame 5, support frame 501, support rod 502. DETAILED DESCRIPTION

[0022] Embodiment 1: like Figure 1 , 2 As shown in Figure 3, a segmented fan blade includes a blade root 1, wherein the blade root 1 is provided with a skeleton 2, and the skeleton 2 is provided with a plurality of blade segments 3; the blade root 1, the skeleton 2 and the blade segments 3 are combined into a curved needle to fix the fan blade.

[0023] The blade segment 3 is connected to the frame 2 via a mounting member 4; the material of the frame 2 and the mounting member 4 is preferably 6082-T6 high-strength aluminum alloy.

[0024] The blade root 1 is used to connect to the existing wind turbine hub, and the connection structure between the blade root 1 and the wind turbine hub adopts the connection structure between the existing wind turbine blade and the wind turbine hub.

[0025] The fan blades are designed in sections, so that no large molds are needed during the processing. Instead, only small molds are needed to complete the processing of the fan, which is not only more efficient but also saves costs. In particular, the blade size of the prior art is getting larger and larger, and the cost of using large molds for processing increases exponentially. This application can greatly reduce the processing cost; Furthermore, during the operation of the fan blades of the present application, the rotational torque is transmitted through the skeleton 2 rather than through the blade segment 3, so the processing requirements of the blade segment 3 can be reduced. The blade segment 3 mainly needs to deal with the wind pressure, thereby reducing the processing cost of the blade and the design difficulty.

[0026] In the preferred embodiment, Fig.12 As shown, a soft pad 301 is provided at the connection between adjacent blade segments 3, and the soft pad 301 is preferably a sealing pad; The blade segment 3 is cylindrical, and the skeleton 2 passes through the blade segment 3. The specific shape of the blade segment 3 is determined according to the external shape of the corresponding segment of the actual fan blade, that is, the blade segments 3 of the present application are combined into a complete blade surface; after the combination, the connection between the blade segments 3 is in close contact and sealed by a sealing gasket, and is assisted by existing sealing methods, such as coating the surface with glass fiber material.

[0027] In a further embodiment, Figure 2 , 3 As shown in , 4 and 5, the skeleton 2 includes a plurality of keels 201, the cross section of the keel 201 is H-shaped, the keel 201 is preferably H-steel or I-steel, one end of the keel 201 is fixedly connected to the blade root 1, preferably by welding, and the keel 201 is connected to the hub of the wind turbine generator through the blade root 1; The mounting member 4 is connected to the keel 201; A plurality of first connecting plates 202 are provided between adjacent keels 201, and the adjacent keels 201 are connected by the first connecting plates 202, so that the keels 201 support each other, thereby ensuring the stability of the connection; The first connecting plate 202 is provided with a vertical plate 204, and the vertical plate 204 is provided with a supporting plate 205; The support plates 205 in the same row along the length direction of the keel 201 are connected with cables 206. Figure 4 , 5 As shown in FIG. 8 , the vertical plane where the cable 206 is located is parallel to the vertical plane where the keel 201 is located, and the connection and movement of the mounting member 4 will not be affected during the connection process between the blade segment 3 and the keel 201; By pulling the support plate 205 with the cable 206, the weight can be reduced while achieving a fixing effect, thereby ensuring the overall stability of the frame 2; the role of the cable 206 can be referred to as a cable bridge, and the keel 201 is equivalent to the bridge deck.

[0028] The length of the keel 201, the size of the vertical plate 204 and the size of the support plate 205 are determined according to the actual size of the fan blades, such as Figure 5 , the support plate 205 at the edge is shorter than the support plate 205 at the middle. Figure 3 , different keels 201 have different lengths.

[0029] Embodiment 2: like Figure 2 , 3 As shown in , 4, 5, 6 and 7, multiple keels 201 are combined into a large keel, and multiple large keels are arranged side by side. One end of the large keel is fixedly connected to the blade root 1; the number of keels 201 required for each large keel is determined according to the actual size of the fan blade, such as Figure 3 Combinations shown; Adjacent keels 201 of the same large keel are connected by connecting pieces 203 to connect different sections of the skeleton; The connecting member 203 includes a second connecting plate 231 connected to the keel 201. The second connecting plate 231 is located at the end of the keel 201. The top surface of the second connecting plate 231 is in the same plane as the top surface of the first connecting plate 202. The second connecting plate 231 is connected between two adjacent keels 201. The second connecting plate 231 not only connects the keels 201, but also serves to butt the keels 201. Figure 4 and 5 As shown; The second connecting plate 231 is provided with a fixing plate 232, and two adjacent fixing plates 232 fit each other to facilitate the connection and fixing of the keel 201; Among the two fitted fixing plates 232, one fixing plate 232 has a plurality of positioning holes 233 on one side, a nut 234 is provided in the positioning hole 233, and the positioning hole 233 is matched with the nut 234; the other fixing plate 232 has a plurality of rotating blocks 237 on one side, a hexagonal hole 238 is provided on one side of the rotating block 237, and a connecting rod 236 is provided on the other side of the rotating block 237, the connecting rod 236 extends from the fixing plate 232 to the other fixing plate 232, and the connecting rod 236 has a threaded rod 235, the threaded rod 235 passes through the nut 234, and the threaded rod 235 is threadedly connected with the nut 234; The fixing plate 232 is provided with a through hole for the connecting rod 236 and the threaded rod 235 to pass through, and the size of the through hole is adapted to the connecting rod 236; A positioning rod 239 is provided in the second connecting plate 231; among the two second connecting plates 231 connected to each other, one of the second connecting plates 231 is fixedly connected to the positioning rod 239, and the other second connecting plate 231 is provided with a hole adapted to the positioning rod 239; A cable 206 is provided between the fixing plate 232 and the supporting plate 205 , and the cable 206 is in a straightened state to ensure the stability of the connection.

[0030] When in use, the large keel is divided into different sections of keels 201. Different keels 201 of the same section are connected and fixed by the first connecting plate 202 and the second connecting plate 231. Different combinations form frame segments, and then the frame segments of different sections are connected. When connecting, the positioning rod 239 is first inserted into the hole at the connection position, and then the connected frame segments are moved continuously until the corresponding keels 201 are in contact, and the two adjacent fixing plates 232 fit each other, and then the nut 234 is put into the positioning hole 233 and then the connecting rod 236 and the threaded rod 235 are inserted into the through hole. When the threaded rod 235 is against the nut 234, a hexagonal wrench is inserted into the hexagonal hole 238 and rotated until the nut 234 is tightened onto the threaded rod 235. After all are connected, Figure 6As shown, the connection of the skeleton segment can be completed, and by analogy, the connection of the skeleton 2 can be completed. The operation is simple, the connection is convenient, and the connection is firm.

[0031] The present application adopts a segmented design for the skeleton 2, and the blades also adopt a segmented design. During the transportation process, there is no need to use large-scale transportation tools, nor is there any need to modify the road surface, thereby reducing transportation costs and increasing transportation convenience.

[0032] Embodiment 3: like Figure 4 , 8 As shown in , 9, 10, 11 and 13, the mounting member 4 includes a connecting buckle 401 connected to the keel 201, and a connecting block 402 is provided on a side of the connecting buckle 401 away from the keel 201, and the connecting block 402 is connected to the blade segment 3 through a connecting frame 5; The shape of the connecting buckle 401 can be as follows: Figure 4 and 10 As shown, the present application adopts an H-shaped design for the keel 201 , so that the connecting buckles 401 can be connected on both sides of the keel 201 to ensure stable and convenient connection.

[0033] In the present application, which keel 201 the connecting buckle 401 is connected to depends on the actual situation, for example, Figure 8 As shown, the keels 201 are connected at intervals, or each keel 201 is connected, or only one keel 201 is connected, depending on the actual situation.

[0034] A fixed rod 403 is provided between the connecting blocks 402 connected to the same blade segment 3, and a movable rod 407 is slidably connected inside the fixed rod 403; A plurality of positioning grooves 404 are provided on the side of the keel 201. The bottom of the positioning groove 404 is provided with a conical surface to facilitate positioning during connection. A positioning block 405 is slidably connected in the positioning groove 404. The positioning block 405 is adapted to the positioning groove 404 and extends into the connecting buckle 401. A guide seat 406 is provided on one side of the positioning block 405 away from the keel 201, and the guide seat 406 extends into the interior of the connecting block 402; Fig.11 In the embodiment, the guide seat 406 and the positioning block 405 can only be connected to the connecting buckle 401 by sliding up and down, that is, the hole for the guide seat 406 and the positioning block 405 to move provided in the connecting buckle 401 can only make the guide seat 406 and the positioning block 405 slide up and down; The movable rod 407 is provided with a guide block 408, the guide block 408 is in close contact with the guide seat 406, and the contact surface between the guide block 408 and the guide seat 406 is an inclined surface; A guide groove is provided in the guide seat 406, and a guide rail 409 is provided in the guide block 408. The guide rail 409 is adapted to the guide groove, and the guide groove and the guide rail 409 are arranged along the inclined surface. The cross section of the guide rail 409 is T-shaped; therefore, during the sliding process of the guide block 408, the guide block 408 can drive the guide seat 406 to move through the guide groove and the guide rail 409; and because the guide seat 406 and the positioning block 405 can only slide, during the sliding process of the guide block 408, the guide groove and the guide rail 409 will drive the guide seat 406 and the positioning block 405 to slide, that is, enter or move away from the positioning groove 404; The end of the fixed rod 403 is threadedly connected with a threaded column 410 , one end of the threaded column 410 is provided with a cushion block 411 , the cushion block 411 abuts against the movable rod 407 , and the other end of the threaded column 410 is provided with a knob 412 .

[0035] When installing the blade segment 3, align the corresponding connecting buckle 401 with the corresponding keel 201 and then slide it inward, so that the connecting buckle 401 is connected to the keel 201 and slides along the keel. After sliding to the specified position, the blade segment 3 reaches the expected position, and then turn the knob 412 to drive the threaded column 410 to rotate, so that the threaded column 410 moves toward the fixed rod 403, and the movable rod 407 can be pushed, thereby driving the guide block 408 to move, and then driving the guide seat 406 and the positioning block 405 to move. The positioning block 405 enters the interior of the positioning groove 404 to complete the connection, otherwise it can be disassembled. The operation is simple, easy to connect and disassemble, and convenient for assembly and replacement of fan blades.

[0036] And the same blade segment 3 is connected with multiple connecting buckles 401, such as Fig. 9 As shown, the connection buckle 401 on the same keel 201 can be connected by only turning a knob 412, thereby making the connection more efficient.

[0037] The interior of the knob 412 is preferably provided with an inner hexagonal hole. When the blade segment 3 of the head is connected, the blade segment 3 of the head is provided with an operating hole 302. A hexagonal wrench is used to pass through the operating hole 302 and enter the inner hexagonal hole, and then twist it to complete the above-mentioned installation and disassembly operations.

[0038] In a further embodiment, Fig.10 and 11 As shown, the connecting frame 5 includes a support frame 501 arranged in the blade segment 3, the support frame 501 is provided with a support rod 502, and the support rod 502 is connected to the connecting block 402; the support frame 501 is arranged inside the blade segment 3, and is used for internal fixation and support of the blade segment 3. The material of the support frame 501 is preferably 6082-T6 high-strength aluminum alloy, and the specific shape of the support frame 501 is determined according to the internal shape of the corresponding blade segment 3.

[0039] The connecting block 402 is provided with a fixing block 421, and the end of the supporting rod 502 is provided with a connecting groove, and the fixing block 421 is adapted to the connecting groove; The fixing block 421 is connected to the support rod 502 via a pin bolt 422 .

[0040] When in use, the mounting member 4 and the connecting frame 5 can be processed separately as needed, thereby reducing the processing difficulty. After the processing is completed, the fixing block 421 is inserted into the interior of the connecting groove, and then the pin bolt 422 is used to connect to complete the connection and fixation. The operation is simple and convenient for connection; the fixing block 421 and the support rod 502 are provided with pin holes and threaded holes corresponding to the connecting pin bolt 422, which can be specifically as follows Fig.11 shown.

[0041] In the above embodiment, it is necessary to ensure that when the connecting buckle 401 slides along the keel 201, the connecting buckle 401 does not touch the first connecting plate 202, the second connecting plate 231, the fixing plate 232, the vertical plate 204, the supporting plate 205 and the cable 206. Figure 8 , the sliding of the connecting buckle 401, the connecting block 402, the supporting rod 502 and the supporting frame 501 are all affected.

[0042] Embodiment 4: A method for transporting segmented fan blades comprises the following steps: S1. Process the skeleton and blades according to the drawings of the fan blades to form segmented skeletons and blades; S2, transporting the segmented skeleton and blades to a land work site by a transport vehicle; or Transporting the segmented skeleton and blades to the coast by transport vehicles; S3, assembling the skeleton and the blades to form a complete fan blade; or Assemble the skeleton and blades on the transport ship to form a complete wind turbine blade, and transport the wind turbine blade to the offshore work site by the transport ship; S4. Install the fan blades.

[0043] The present application adopts a segmented wind turbine blade frame and blades, so that there is no need to use large-scale transportation equipment during transportation, and there is no need to change the road environment during land transportation. Compared with the existing method of using large-scale transportation equipment, which requires changing the road environment to ensure transportation, the method of the present application has lower transportation costs, higher transportation efficiency, and less impact on the environment.

[0044] In a preferred embodiment, in S1, the skeleton processing process includes: S111. Arrange the keels of one section of the skeleton side by side according to the drawing; S112, welding the connecting plate between the keels; S113, the two sides of the connecting plate are welded to support and reinforce the plate body; A plurality of through holes are provided in the plate body located at the edge of the keel; S114, welding cables between plates; S115, repeat S111-S114 until the skeletons of all segments are processed; The processing of the skeleton is completed through the above steps, wherein the end of the skeleton connected to the hub of the wind turbine generator is welded to the root of the wind turbine blade; The blade processing includes: S121. Design the mold according to the drawing; S122, processing the segmented blades through a mold; S123, the processing is completed, and blades of all segments are obtained; S124, connecting parts welded inside the blade and connected to the frame.

[0045] The present application adopts a segmented method to produce and process the fan blade skeleton and blades. The processing method is simple and does not require the use of large molds, thereby greatly reducing the processing cost.

[0046] In a preferred solution, in S3, the combination process includes: S31, connecting the blade segment close to the root of the fan blade to the frame through a connecting piece; S32, connecting the next skeleton section to the previous skeleton section; S33, connecting the next section of blades to the frame through a connecting piece; S34, repeat S32-S33 until the assembly is completed; At the connection between the frames, the plates at the ends of the frames are connected by bolts and nuts, and the bolts pass through the reserved through holes. The segmented fan blades of the present application are simple to connect and easy to operate, which increases the convenience of assembly and facilitates subsequent maintenance and replacement.

[0047] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limiting the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A segmented fan blade, characterized in that: It comprises a blade root (1), the blade root (1) is provided with a frame (2), and the frame (2) is provided with a plurality of blade segments (3); The blade segment (3) is connected to the frame (2) via a mounting member (4); The blade root (1) is used to connect to the hub of the wind turbine generator.

2. A segmented fan blade according to claim 1, characterized in that: A soft cushion (301) is provided at the connection between adjacent blade segments (3); The blade segment (3) is cylindrical, and the skeleton (2) passes through the blade segment (3).

3. A segmented fan blade according to claim 1, characterized in that: The skeleton (2) comprises a plurality of keels (201), the cross section of the keel (201) is H-shaped, and one end of the keel (201) is fixedly connected to the blade root (1); The mounting member (4) is connected to the keel (201); A plurality of first connecting plates (202) are provided between adjacent keels (201), the first connecting plates (202) are provided with vertical plates (204), and the vertical plates (204) are provided with supporting plates (205); Cables (206) are connected between the support plates (205) in the same row along the length direction of the keel (201).

4. A segmented fan blade according to claim 3, characterized in that: A plurality of keels (201) are combined into a large keel, the plurality of large keels are arranged side by side, and one end of the large keel is fixedly connected to the blade root (1); Adjacent keels (201) of the same large keel are connected via a connecting piece (203); The connecting member (203) comprises a second connecting plate (231) connected to the keel (201), the second connecting plate (231) being located at an end of the keel (201), and the top surface of the second connecting plate (231) being in the same plane as the top surface of the first connecting plate (202); The second connecting plate (231) is connected between two adjacent large keels (201); The second connecting plate (231) is provided with a fixing plate (232), and two adjacent fixing plates (232) are fitted to each other; Among the two fixed plates (232) that are fitted together, one of the fixed plates (232) is provided with a plurality of positioning holes (233) on one side, and a nut (234) is provided in the positioning hole (233); one of the other fixed plates (232) is provided with a plurality of rotating blocks (237) on one side, and a hexagonal hole (238) is provided on one side of the rotating block (237); a connecting rod (236) is provided on the other side of the rotating block (237); the connecting rod (236) extends from the fixed plate (232) to the inside of the other fixed plate (232); the connecting rod (236) is provided with a threaded rod (235); the threaded rod (235) passes through the nut (234); and the threaded rod (235) is threadedly connected to the nut (234); A positioning rod (239) is provided inside the second connecting plate (231); A pull cable (206) is provided between the fixing plate (232) and the supporting plate (205); The cable (206) is in a straightened state.

5. A segmented fan blade according to any one of claims 3 or 4, characterized in that: The mounting member (4) comprises a connecting buckle (401) connected to the keel (201); a connecting block (402) is provided on a side of the connecting buckle (401) away from the keel (201); and the connecting block (402) is connected to the blade segment (3) via a connecting frame (5); A fixed rod (403) is provided between the connecting blocks (402) connected to the same blade segment (3), and a movable rod (407) is slidably connected inside the fixed rod (403); A positioning groove (404) is provided on the side of the keel (201), a positioning block (405) is slidably connected in the positioning groove (404), and the positioning block (405) extends into the connecting buckle (401); A guide seat (406) is provided on one side of the positioning block (405) away from the keel (201), and the guide seat (406) extends into the interior of the connecting block (402); The movable rod (407) is provided with a guide block (408), the guide block (408) is in close contact with the guide seat (406), and the contact surface between the guide block (408) and the guide seat (406) is an inclined surface; A guide groove is provided in the guide seat (406), and a guide rail (409) is provided in the guide block (408). The guide rail (409) is matched with the guide groove, and the cross section of the guide rail (409) is T-shaped; The end of the fixed rod (403) is threadedly connected to a threaded column (410), one end of the threaded column (410) is provided with a cushion block (411), the cushion block (411) abuts against the movable rod (407), and the other end of the threaded column (410) is provided with a knob (412); The blade segment (3) of the head is provided with an operation hole (302).

6. A segmented fan blade according to claim 5, characterized in that: The connecting frame (5) comprises a supporting frame (501) arranged in the blade segment (3), the supporting frame (501) being provided with a supporting rod (502), and the supporting rod (502) being connected to the connecting block (402); The connecting block (402) is provided with a fixing block (421), and the end of the supporting rod (502) is provided with a connecting groove, and the fixing block (421) is adapted to the connecting groove; The fixing block (421) is connected to the support rod (502) via a pin bolt (422).

7. A segmented fan blade according to claim 5, characterized in that: A plurality of connection buckles (401) are slidably connected to two sides of the keel (201); When the connecting buckle (401) slides along the keel (201), the connecting buckle (401) will not touch the first connecting plate (202), the second connecting plate (231), the fixing plate (232), the vertical plate (204), the supporting plate (205) and the cable (206).

8. A method for transporting segmented fan blades, characterized in that The steps include: S1. Process the skeleton and blades according to the drawings of the fan blades to form segmented skeletons and blades; S2, transporting the segmented skeleton and blades to a land work site by a transport vehicle; or Transporting the segmented skeleton and blades to the coast by transport vehicles; S3, assembling the skeleton and the blades to form a complete fan blade; or Assemble the skeleton and blades on the transport ship to form a complete wind turbine blade, and transport the wind turbine blade to the offshore work site by the transport ship; S4. Install the fan blades.

9. A method for transporting segmented fan blades according to claim 8, Its characteristic is that in S1, the skeleton processing process includes: S111. Arrange the keels of one section of the skeleton side by side according to the drawing; S112, welding the connecting plate between the keels; S113, the two sides of the connecting plate are welded to support and reinforce the plate body; A plurality of through holes are provided in the plate body located at the edge of the keel; S114, welding cables between plates; S115, repeat S111-S114 until the skeletons of all segments are processed; The processing of the skeleton is completed through the above steps, wherein the end of the skeleton connected to the hub of the wind turbine generator is welded to the root of the wind turbine blade; The blade processing includes: S121. Design the mold according to the drawing; S122, processing the segmented blades by a mold; S123, the processing is completed, and blades of all segments are obtained; S124, connecting parts welded inside the blade and connected to the frame.

10. A method for transporting segmented fan blades according to claim 9, characterized in that In S3, the combination process includes: S31, connecting the blade segment close to the root of the fan blade to the frame through a connecting piece; S32, connecting the next skeleton section to the previous skeleton section; S33, connecting the next section of blades to the frame through a connecting piece; S34, repeat S32-S33 until the assembly is completed; At the connection between the frames, the plates at the ends of the frames are connected by bolts and nuts, and the bolts pass through the reserved through holes.

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