Framework type detachable segmented fan blade and machining method thereof

Abstract

The invention provides a skeleton type detachable segmented fan blade and a processing method thereof, the skeleton type detachable segmented fan blade comprises a mounting seat, the mounting seat is provided with a skeleton, and the skeleton is provided with a plurality of blades; connecting frames are arranged in the blades, the framework is provided with guide rails, the connecting frames are matched with the guide rails, and the blades are connected with the framework through the connecting frames and the guide rails. The mounting base is used for connecting a wind driven generator hub. In the production process, a large mold does not need to be used, machining forming of the blade can be completed through a small mold, operation is simpler, and cost is lower; the sectional type detachable blades are adopted, when part of or a single blade is damaged, only the corresponding blade needs to be replaced, the whole fan blade does not need to be replaced, the replacement and maintenance cost is lower, and the replacement efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of fan blades, and in particular to a skeleton-type detachable segmented fan blade and a processing 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 need to be used for processing, which is costly. In addition, during the operation of the fan blades, the transmission of torque depends on the fan blades. In order to meet the working requirements, the processing requirements and costs of the fan blades are relatively high.

[0004] When encountering harsh environments, the fan blades need to be replaced as a whole after being damaged, which is costly and inefficient. Summary of the invention

[0005] The main purpose of the present invention is to provide a skeleton-type detachable segmented fan blade and a processing method thereof, so as to solve the problems of high processing cost of existing fan blades and high replacement cost after partial damage.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A skeleton-type detachable segmented fan blade comprises a mounting seat, the mounting seat is provided with a skeleton, and the skeleton is provided with a plurality of blades; A connecting frame is provided inside the blade, and a guide rail is provided in the frame. The connecting frame is adapted to the guide rail, and the blade is connected to the frame through the connecting frame and the guide rail. The mounting base is used to connect to the wind turbine hub.

[0007] In a preferred solution, the frame includes a plurality of first keels connected to the mounting seat, the first keels are provided with a plurality of cross beams, the cross beams are provided with second keels, and one end of the second keel is connected to the mounting seat; A reinforcing rod is provided between adjacent first keels; The cross beam is provided with a first connecting beam and a second connecting beam, and the first connecting beam and the second connecting beam are arranged in parallel; A fixing rod is provided between the first connecting beam and the second connecting beam; The guide rail comprises a first connecting beam and a second connecting beam, and the first connecting beam and the second connecting beam are used to connect the connecting frame.

[0008] In a preferred solution, the connecting frame includes a support plate arranged on the inner wall of the blade, and the support plate is provided with a first connecting rod and a second connecting rod; The first connecting rod is provided with a first connecting seat connected to the first connecting beam, and the second connecting rod is provided with a second connecting seat connected to the second connecting rod; A plurality of first reinforcing ribs are arranged between the first connecting rod and the support plate, and a plurality of second reinforcing ribs are arranged between the second connecting rod and the support plate.

[0009] In a preferred solution, the first connecting beam and the second connecting beam each include a fixing plate connected to the cross beam, the fixing plate is provided with a guide plate, and the guide plate is arranged perpendicular to the fixing plate; A first positioning hole and a second positioning hole are sequentially provided at one end of the guide plate close to the first keel, the second positioning hole is close to the end surface, and a guide groove is provided on one side of the first positioning hole close to the second positioning hole; The first connecting seat and the second connecting seat include a fixing plate, a top block is provided on the top of the fixing plate, and the top block is located on the top of the guide plate; a bottom block is provided on the bottom of the fixing plate, and the bottom block is located on the bottom of the guide plate; Two rollers are provided at the bottom of the top block, and the parts of the two rollers located outside the top block are located in the first positioning hole and the second positioning hole; There is a gap between the top of the bottom block and the guide plate.

[0010] In a preferred solution, the guide rail includes a first keel; The connecting frame includes a connecting sleeve connected to the blade, the connecting sleeve is C-shaped, and the connecting sleeve is connected to the first keel; The connecting sleeve is fixed to the first keel by screws; A support rod is arranged between the connecting sleeve and the blades.

[0011] In a preferred solution, multiple blades are combined in pairs to form multiple sections of fan blades, and the multiple sections of fan blades are combined with a mounting base and a frame to form a complete fan blade, and the same section of fan blades consists of an upper blade and a lower blade; The upper blade is located above the first keel, and the lower blade is located below the first keel. The ends of the upper blade and the lower blade are connected by a connecting mechanism; A sealing gasket is arranged between two adjacent upper blades and between two adjacent lower blades.

[0012] In a preferred solution, the connection mechanism includes a fixed sleeve arranged on the inner wall of the lower blade, and a rotating shaft is rotatably arranged in the fixed sleeve; One end of the rotating shaft extends to the interior of the lower blade and is provided with a limit rod, and the other end of the rotating shaft is provided with a knob; A limiting column is provided on the inner wall of the upper blade, and a limiting plate is provided on the side of the limiting column away from the upper blade; A limiting groove is arranged on the side of the limiting rod, the limiting column is located in the limiting groove, and the limiting column is matched with the limiting groove; the limiting groove is an arc groove, and the center of the limiting groove is located at the axis center line of the rotating shaft.

[0013] A method for processing a skeleton-type detachable segmented fan blade comprises the following steps: S1. According to the design size of the fan blades, the size of the skeleton and the size of each blade are obtained by modeling; S2. Cutting the keels and beams constituting the frame into corresponding sizes according to the size of the frame; Process the mold according to the size of the blade; S3, welding the cut keels and beams to obtain a skeleton; The blade is obtained by mold processing; S4. Reinforce the inner side of the blade, weld the connection structure, and apply glass fiber material on the surface of the blade; S5, connecting the blades to the frame, and sealing the gaps between the blades; The processing of the segmented fan blades is completed by the above method.

[0014] In the preferred solution, the keel and beam are aluminum alloy I-steel, aluminum alloy H-steel and aluminum alloy T-steel; In S3, this includes: S31, arranging the plurality of keels in sequence according to the drawing; S32, connecting the beams to the keel; multiple beams are evenly spaced and welded to the keel one by one, and the beams are perpendicular to the keel; S33, connecting another keel to the welded beam, and welding the connection; S34, flip the structure obtained in S33 by 180°, and then repeat the steps of S32-S33; S35. Weld the connecting parts to obtain the skeleton.

[0015] In a preferred solution, in S5, the blade connection is stepped, and a sealing gasket is provided at the blade connection; The blade joints are in close contact.

[0016] The present invention provides a skeleton-type detachable segmented fan blade and a processing method thereof. By adopting the above scheme, the following beneficial effects are achieved: 1. In the production process, there is no need to use large molds. Small molds can be used to complete the processing and molding of the blades, which is simpler to operate and lower in cost.

[0017] 2. The segmented and detachable blades are used. When part or a single blade is damaged, only the corresponding blade needs to be replaced. There is no need to replace the entire fan blade. The replacement and maintenance cost is lower and the replacement efficiency is higher.

[0018] 3. The torque of the blade is transmitted to the hub of the wind turbine through the skeleton, rather than directly through the blade, so that the processing requirements for the blade can be reduced and the processing cost is lower.

[0019] 4. Compared with the prior art, the wind turbine blades of the present application obtained by adopting the same quality requirements and material processing can cope with more extreme climate changes and have stronger adaptability.

[0020] 5. The blades are connected to the frame with simple operation and a stable connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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 skeleton-type detachable segmented fan blade of the present invention; Figure 2 It is a front view of a skeleton-type detachable segmented fan blade of the present invention; Figure 3 is an enlarged structural schematic diagram of the mounting seat of the present invention; Figure 4 is an enlarged structural schematic diagram of the frame of the present invention near the mounting seat; Figure 5 yes Figure 4 A front view of Figure 6 is a side view of the connecting frame of the present invention when connected to the blades; Figure 7 is a side view of the connecting frame of the present invention when connecting different blades; Figure 8 is a side cross-sectional view of the first connecting seat and the second connecting seat of the present invention; Fig. 9 is an end cross-sectional view of the first connecting seat and the second connecting seat of the present invention; Fig.10 It is a structural schematic diagram of a skeleton-type detachable segmented fan blade head of the present invention; Fig.11 is a side view of the connecting sleeve of the present invention; Fig.12 It is a schematic diagram of the structure when the connecting mechanism of the present invention is connected; Fig.13 It is a schematic diagram of the structure when the connecting mechanism of the present invention is connected; Fig.14 It is a schematic diagram of the structure of the skeleton of the present invention; Fig.15 It is a structural schematic diagram of three connection modes of the blade-to-blade connection of the present invention.

[0022] In the figure: Mounting seat 1, skeleton 2, first keel 201, cross beam 202, second keel 203, first connecting beam 204, second connecting beam 205, fixing rod 206, reinforcing rod 207, fixing plate 211, guide plate 212, first positioning hole 213, second positioning hole 214, guide groove 215, blade 3, upper blade 301, lower blade 302, sealing pad 303, connecting frame 4, support plate 401, first connecting rod 402, second connecting rod 403, first connecting seat 404, second connecting seat 405, first reinforcing rib 406, second reinforcing rib 407, fixing block 411, top block 412, bottom block 413, roller 414, support rod 501, connecting sleeve 502, screw 503, connecting mechanism 6, fixing sleeve 601, rotating shaft 602, knob 603, limiting rod 604, limiting column 605, limiting plate 606. DETAILED DESCRIPTION

[0023] Embodiment 1: like Figure 1 , 2 As shown in FIG. 3 , a skeleton-type detachable segmented fan blade comprises a mounting base 1, the mounting base 1 is provided with a skeleton 2, and the skeleton 2 is provided with a plurality of blades 3; A connecting frame 4 is welded inside the blade 3, and the inner side of the blade 3 is the back side of the blade 3; a guide rail is welded on the frame 2, and the connecting frame 4 is adapted to the guide rail. The blade 3 is connected to the frame 2 through the connecting frame 4 and the guide rail. The frame 2 and the connecting frame 4 are preferably made of 6082-T6 high-strength aluminum alloy; The mounting base 1 is used to connect to the hub of the wind turbine generator. A plurality of screws are arranged on a side of the mounting base 1 away from the blades 3. The mounting base 1 is connected to the hub of the wind turbine generator in an existing manner.

[0024] The fan blades adopt a detachable segmented design, that is, the blades 3 adopt a single-sided design on the front, and a connecting frame 4 is arranged on the back to cooperate with the frame 2. The multiple blades 3 and the frame 2 are combined to form a complete fan blade. When in use, the torque generated by the fan blades under the influence of wind flow is transmitted to the frame 2 through the blades 3, and then transmitted to the wind turbine hub by the frame 2. In this process, the blades 3 only need to bear the force directly acted on by the wind flow, and the torque is transmitted through the frame 2, so that the load borne by the blades 3 is smaller, so that blades with the same processing requirements and costs can cope with more extreme climate changes, and the processing cost of the fan blades can be reduced if the use requirements remain unchanged; and because there is no need for blades to transmit torque, compared with the existing method of transmitting torque through the entire blade, the thickness of the blade can be reduced and the overall weight is lower.

[0025] Furthermore, the segmented blades 3 can be easily disassembled from the frame 2. When one of the blades 3 is damaged, such as a single blade 3 is broken or cracked, only the damaged blade 3 needs to be replaced, and the entire blade 3 does not need to be replaced, thereby increasing replacement efficiency and reducing costs.

[0026] During the connection of the blades 3 , it is preferred to start the connection from the side close to the mounting seat 1 .

[0027] In a further embodiment, Figure 3 , 4 , 5, 6, 10 and 14, the skeleton 2 includes a plurality of first keels 201 connected to the mounting seat 1, the first keels 201 are preferably H-steel, the first keels 201 are provided with a plurality of cross beams 202, the cross beams 202 are preferably H-steel and I-steel, the cross beams 202 are provided with second keels 203, the second keels 203 are preferably H-steel, and one end of the second keel 203 is connected to the mounting seat 1; like Fig.14 As shown, the lengths and positions of the first keel 201, the second keel 203 and the crossbeam 202 are determined according to the overall shape of the fan blade, so as to ensure the strength while not affecting the installation of the blade 3.

[0028] In a position where the space is limited and the cross beam 202 cannot be connected, a reinforcing rod 207 is welded between adjacent first keels 201 for reinforcement; The cross beam 202 is provided with a first connecting beam 204 and a second connecting beam 205, and the first connecting beam 204 and the second connecting beam 205 are arranged in parallel to ensure the installation of the blade 3; A fixing rod 206 is provided between the first connecting beam 204 and the second connecting beam 205, and the fixing rod 206 is used to reinforce the first connecting beam 204 and the second connecting beam 205; The lengths of the first connecting beam 204 and the second connecting beam 205 are determined according to the cross-sectional shape of the wind turbine blade at the location. When the lengths of the first connecting beam 204 and the second connecting beam 205 are not enough to connect the fixing rod 206, the fixing rod 206 is not connected. Figure 6 and 7 As shown, the positions and sizes of the first connecting beam 204 and the second connecting beam 205 when they are arranged at different positions.

[0029] The guide rail includes a first connecting beam 204 and a second connecting beam 205 , and the first connecting beam 204 and the second connecting beam 205 are used to connect the connecting frame 4 .

[0030] During connection, the connecting frame 4 of the blade 3 moves along the first connecting beam 204 and the second connecting beam 205 until the blade 3 reaches the expected position. Positioning blocks can be provided at the ends of the first connecting beam 204 and the second connecting beam 205 to determine the stop position of the connecting frame 4.

[0031] In a further embodiment, Figure 3 , 4, 6 and 7, the connecting frame 4 includes a support plate 401 arranged on the inner wall of the blade 3, the shape of the support plate 401 is determined according to the shape of the inner wall of the blade 3 at the connection position, the blade 3 is connected to the support plate 401 by welding or adhesive bonding, and the support plate 401 is provided with a first connecting rod 402 and a second connecting rod 403; The first connecting rod 402 is provided with a first connecting seat 404 connected to the first connecting beam 204, and the second connecting rod 403 is provided with a second connecting seat 405 connected to the second connecting rod 403. The first connecting seat 404 and the second connecting seat 405 are provided with openings, and the openings are adapted to the first connecting beam 204 and the second connecting beam 205. The number of the first connecting seat 404 and the second connecting seat 405 is determined according to the length of the first connecting beam 204 and the second connecting beam 205 at the connecting position, and the distance between two adjacent first connecting seats 404 is not less than 2 cm; A plurality of first reinforcing ribs 406 are provided between the first connecting rod 402 and the support plate 401 , and a plurality of second reinforcing ribs 407 are provided between the second connecting rod 403 and the support plate 401 . The first reinforcing ribs 406 and the second reinforcing ribs 407 are used to fix the support plate 401 to the first connecting rod 402 and the second connecting rod 403 .

[0032] When in use, align the openings of the first connecting seat 404 and the second connecting seat 405 connecting the blade 3 with the first connecting rod 402 and the second connecting rod 403, and then slide the blade 3 along the direction of the first connecting rod 402 and the second connecting rod 403, so that the first connecting seat 404 and the second connecting seat 405 slide along the first connecting rod 402 and the second connecting rod 403 until they slide to the position where the positioning block is positioned, and the connection of the blade 3 is completed. Otherwise, it can be disassembled. The operation is simple and convenient for connecting the blade 3.

[0033] Embodiment 2: like Figure 6 , 7 As shown in , 8 and 9, the first connecting beam 204 and the second connecting beam 205 each include a fixing plate 211 connected to the cross beam 202, the fixing plate 211 is provided with a guide plate 212, the guide plate 212 is arranged perpendicular to the fixing plate 211, and the cross-sections of the fixing plate 211 and the guide plate 212 are preferably T-shaped or L-shaped; The end of the guide plate 212 close to the first keel 201 is provided with a first positioning hole 213 and a second positioning hole 214 in sequence, the second positioning hole 214 is close to the end surface, and a guide groove 215 is provided on one side of the first positioning hole 213 close to the second positioning hole 214; The first connecting seat 404 and the second connecting seat 405 include a fixed block 411, a top block 412 is provided on the top of the fixed block 411, and the top block 412 is located on the top of the guide plate 212; a bottom block 413 is provided on the bottom of the fixed block 411, and the bottom block 413 is located at the bottom of the guide plate 212; the fixed block 411, the top block 412 and the bottom block 413 are combined to form a U shape.

[0034] Two rollers 414 are provided at the bottom of the top block 412, and the parts of the two rollers 414 located outside the top block 412 are located in the first positioning hole 213 and the second positioning hole 214; like Fig. 9 There is a gap between the top of the bottom block 413 and the guide plate 212 , and the width of the gap is not less than the thickness of the portion of the roller 414 extending out of the bottom block 413 .

[0035] When installing the blade 3, the guide plate 212 is located between the top block 412 and the bottom block 413, and the two rollers 414 are located on the top of the guide plate 212. Then, when the moving blade 3 drives the first connecting seat 404 and the second connecting seat 405 to move along the guide plate 212, the sliding can be facilitated by the assistance of the rollers 414, which increases the smoothness of the sliding and thus increases the convenience of disassembly and assembly; after sliding to the end, the two rollers 414 enter the first positioning hole 213 and the second positioning hole 214 respectively. Restricted by the first positioning hole 213 and the second positioning hole 214, the rollers 414 cannot move at will, thereby avoiding the first connecting seat 404 and the second connecting seat 405 from moving at will, ensuring the stability after connection, otherwise it can be disassembled. When disassembling, the blade 3 is slightly lifted to make the rollers 414 away from the first positioning hole 213 and the second positioning hole 214, and then slide out; the first positioning hole 213 and the second positioning hole 214 also play a positioning role.

[0036] Embodiment 3: like Fig.10 and 11 As shown, when the head space of the fan blade is limited and there is no space to use the first connecting seat 404, the second connecting seat 405, the first connecting beam 204 and the second connecting beam 205, the guide rail includes a first keel 201; The connecting frame 4 includes a plurality of connecting sleeves 502 connected to the blades 3, the connecting sleeves 502 are C-shaped, and the connecting sleeves 502 are connected to the first keel 201; The connecting sleeve 502 is fixed to the first keel 201 by screws 503; A support rod 501 is provided between the connecting sleeve 502 and the blade 3 .

[0037] When connecting, connect the connecting sleeve 502 as Fig.11 The position of the blade 3 is aligned with the first keel 201, and then the blade 3 is moved along the direction of the first keel 201. Fig.10As shown, finally tighten the screws 503 to fix, and the installation is completed. The operation is simple and convenient for connecting the head blades 3 of the segmented fan blades of the present application.

[0038] Embodiment 4: like Figure 1 , 3 , 6, 7, 10, 11, 12 and 13, a plurality of blades 3 are combined in pairs to form a plurality of sections of fan blades, and the plurality of sections of fan blades are combined with the mounting base 1 and the frame 2 to form a complete fan blade, and the same section of fan blades is composed of an upper blade 301 and a lower blade 302; The upper blade 301 is located above the first keel 201, and the lower blade 302 is located below the first keel 201; The ends of the upper blade 301 and the lower blade 302 are connected via a connecting mechanism 6; a sealing rubber pad is provided at the end surface of the connecting position for sealing.

[0039] In a preferred solution, the connection mechanism 6 includes a fixed sleeve 601 disposed on the inner wall of the lower blade 302, and a rotating shaft 602 is rotatably disposed in the fixed sleeve 601; One end of the rotating shaft 602 extends to the interior of the lower blade 302 and is provided with a limiting rod 604, and the other end of the rotating shaft 602 is provided with a knob 603; The inner wall of the upper blade 301 is provided with a limiting column 605, and a limiting plate 606 is provided on the side of the limiting column 605 away from the upper blade 301. After connection, the position of the limiting rod 604 is limited by the limiting plate 606. Fig.12 In the example, the limit rod 604 is restricted to move left and right. Fig.13 In the embodiment, the limit rod 604 can be restricted from moving downward, thereby ensuring the stability after connection; A limiting groove is provided on the side of the limiting rod 604 , and the limiting column 605 is located in the limiting groove, and the limiting column 605 is adapted to the limiting groove; the limiting groove is an arc groove, and the center of the limiting groove is located at the axis line of the rotating shaft 602 .

[0040] After the upper blade 301 and the lower blade 302 of the same section are connected to the frame 2, turn the knob 603 to drive the rotating shaft 602 and the limiting rod 604 to rotate in turn until the limiting rod 604 rotates to the limiting column 605, so that the limiting column 605 enters the inside of the limiting groove, and the connection and fixation of the connection between the upper blade 301 and the lower blade 302 are completed. Otherwise, they can be disassembled. The operation is simple, and it is convenient for connection and reinforcement, and also convenient for replacement.

[0041] In a further embodiment, Fig.15 As shown, a sealing gasket 303 is provided between two adjacent upper blades 301 and between two adjacent lower blades 302. Specifically: The connection position of adjacent blades 3 can be as follows Fig.15As shown in a1, the connection position is L-stepped, and a sealing gasket 303 is provided on the connection surface; The connection position of adjacent blades 3 can also be as follows Fig.15 As shown in a2, the connection surface of adjacent blades 3 is flat, and a sealing groove is provided on the side close to the surface, and the sealing gasket 303 is connected to the sealing groove by adhesive. The method a2 can facilitate the disassembly and assembly of the middle section blade 3; The connection position of adjacent blades 3 can also be as follows Fig.15 As shown in a3, the connection surface is approximately S-shaped.

[0042] Furthermore, at the same time, the upper blade 301 and the lower blade 302 can be connected by screws, and the screws are screwed from the lower blade 302 into the upper blade 301 to complete the fixation.

[0043] Embodiment 5: A method for processing a skeleton-type detachable segmented fan blade comprises the following steps: S1. According to the design size of the fan blades, the size of the skeleton and the size of each blade are obtained by modeling; S2. Cutting the keels and beams constituting the frame into corresponding sizes according to the size of the frame; Process the mold according to the size of the blade; S3, welding the cut keels and beams to obtain a skeleton; The blade is obtained by mold processing; S4. Reinforce the inner side of the blade, weld the connection structure, and apply glass fiber material on the surface of the blade; S5, connecting the blades to the frame, and sealing the gaps between the blades; The processing of the segmented fan blades is completed by the above method.

[0044] The entire processing process is simple to operate, without complicated processing steps, and no large molds are required in the processing of the blades. The fan blades are divided into multiple sections for processing, which can be achieved using small molds, resulting in lower processing costs and higher efficiency.

[0045] In the preferred solution, the keel and beam are aluminum alloy I-steel, aluminum alloy H-steel and aluminum alloy T-steel; In S3, this includes: S31, arranging the plurality of keels in sequence according to the drawing; S32, connecting the beams to the keel; multiple beams are evenly spaced and welded to the keel one by one, and the beams are perpendicular to the keel; S33, connecting another keel to the welded beam, and welding the connection; S34, flip the structure obtained in S33 by 180°, and then repeat the steps of S32-S33; S35. Weld the connecting parts to obtain the skeleton.

[0046] The frame is composed of commonly used aluminum alloy I-steel, aluminum alloy H-steel and aluminum alloy T-steel structures. It has no complex structure, which makes the processing cost of the keel lower. The aluminum alloy is preferably 6082-T6 high-strength aluminum alloy.

[0047] In a preferred solution, in S5, the blade connection is stepped, and a sealing gasket is provided at the blade connection; The blade joints are in close contact, and the structure of the blade joints has been sealed to ensure daily use, and the replacement of the blades will not affect disassembly.

[0048] 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 skeleton-type detachable segmented fan blade, characterized by: It comprises a mounting seat (1), the mounting seat (1) is provided with a frame (2), and the frame (2) is provided with a plurality of blades (3); A connecting frame (4) is provided inside the blade (3), a guide rail is provided on the frame (2), the connecting frame (4) is matched with the guide rail, and the blade (3) is connected to the frame (2) via the connecting frame (4) and the guide rail; The mounting seat (1) is used for connecting to the hub of the wind turbine generator.

2. According to claim 1, a skeleton-type detachable segmented fan blade is characterized in that: The frame (2) comprises a plurality of first keels (201) connected to the mounting seat (1), the first keels (201) are provided with a plurality of cross beams (202), the cross beams (202) are provided with second keels (203), and one end of the second keel (203) is connected to the mounting seat (1); A reinforcing rod (207) is provided between adjacent first keels (201); The crossbeam (202) is provided with a first connecting beam (204) and a second connecting beam (205), and the first connecting beam (204) and the second connecting beam (205) are arranged in parallel; A fixing rod (206) is provided between the first connecting beam (204) and the second connecting beam (205); The guide rail comprises a first connecting beam (204) and a second connecting beam (205), and the first connecting beam (204) and the second connecting beam (205) are used to connect the connecting frame (4).

3. According to claim 2, a skeleton-type detachable segmented fan blade is characterized in that: The connecting frame (4) comprises a support plate (401) arranged on the inner wall of the blade (3), and the support plate (401) is provided with a first connecting rod (402) and a second connecting rod (403); The first connecting rod (402) is provided with a first connecting seat (404) connected to the first connecting beam (204), and the second connecting rod (403) is provided with a second connecting seat (405) connected to the second connecting rod (403); A plurality of first reinforcing ribs (406) are provided between the first connecting rod (402) and the support plate (401), and a plurality of second reinforcing ribs (407) are provided between the second connecting rod (403) and the support plate (401).

4. According to claim 3, a skeleton-type detachable segmented fan blade is characterized in that: The first connecting beam (204) and the second connecting beam (205) both comprise a fixing plate (211) connected to the crossbeam (202), the fixing plate (211) being provided with a guide plate (212), and the guide plate (212) being arranged perpendicular to the fixing plate (211); A first positioning hole (213) and a second positioning hole (214) are sequentially provided at one end of the guide plate (212) close to the first keel (201), the second positioning hole (214) is close to the end surface, and a guide groove (215) is provided on one side of the first positioning hole (213) close to the second positioning hole (214); The first connecting seat (404) and the second connecting seat (405) comprise a fixed block (411), a top block (412) is provided on the top of the fixed block (411), and the top block (412) is located on the top of the guide plate (212); a bottom block (413) is provided on the bottom of the fixed block (411), and the bottom block (413) is located on the bottom of the guide plate (212); Two rollers (414) are provided at the bottom of the top block (412), and the parts of the two rollers (414) located outside the top block (412) are located inside the first positioning hole (213) and the second positioning hole (214); There is a gap between the top of the bottom block (413) and the guide plate (212).

5. According to claim 2, a skeleton-type detachable segmented fan blade is characterized in that: The guide rail comprises a first keel (201); The connecting frame (4) comprises a connecting sleeve (502) connected to the blade (3); the connecting sleeve (502) is C-shaped, and the connecting sleeve (502) is connected to the first keel (201); The connecting sleeve (502) and the first keel (201) are fixed by means of screws (503); A support rod (501) is provided between the connecting sleeve (502) and the blade (3).

6. According to claim 1, a skeleton-type detachable segmented fan blade is characterized by: The plurality of blades (3) are combined in pairs to form a plurality of sections of fan blades. The plurality of sections of fan blades are combined with the mounting base (1) and the frame (2) to form a complete fan blade. The same section of fan blades is composed of an upper blade (301) and a lower blade (302). The upper blade (301) is located above the first keel (201), and the lower blade (302) is located below the first keel (201); The ends of the upper blade (301) and the lower blade (302) are connected via a connecting mechanism (6); A sealing gasket (303) is provided between two adjacent upper blades (301) and between two adjacent lower blades (302).

7. The skeleton-type detachable segmented fan blade according to claim 6 is characterized in that: The connecting mechanism (6) comprises a fixing sleeve (601) arranged on the inner wall of the lower blade (302), and a rotating shaft (602) is rotatably arranged in the fixing sleeve (601); One end of the rotating shaft (602) extends to the interior of the lower blade (302) and is provided with a limiting rod (604), and the other end of the rotating shaft (602) is provided with a knob (603); A limiting column (605) is provided on the inner wall of the upper blade (301), and a limiting plate (606) is provided on a side of the limiting column (605) away from the upper blade (301); A limiting groove is provided on the side of the limiting rod (604), the limiting column (605) is located in the limiting groove, and the limiting column (605) is matched with the limiting groove; the limiting groove is an arc-shaped groove, and the center of the limiting groove is located on the axis of the rotating shaft (602).

8. A method for processing a skeleton-type detachable segmented fan blade according to any one of claims 1 to 7, characterized in that: The steps include: S1. According to the design size of the fan blade, the size of the skeleton and the size of each blade are obtained by modeling; S2. Cutting the keels and beams constituting the frame into corresponding sizes according to the size of the frame; Process the mold according to the size of the blade; S3, welding the cut keels and beams to obtain a skeleton; The blade is obtained by mold processing; S4. Reinforce the inner side of the blade, weld the connection structure, and apply glass fiber material on the surface of the blade; S5. Connect the blades to the frame and seal the gaps between the blades; The processing of the segmented fan blades is completed by the above method.

9. A method for processing a skeleton-type detachable segmented fan blade according to claim 8, characterized in that: The keels and beams are aluminum alloy I-steel, aluminum alloy H-steel and aluminum alloy T-steel; In S3, this includes: S31, arranging the plurality of keels in sequence according to the drawings; S32, connecting the beams to the keel; multiple beams are evenly spaced and welded to the keel one by one, and the beams are perpendicular to the keel; S33, connecting another keel to the welded beam, and welding the connection; S34, flip the structure obtained in S33 by 180°, and then repeat the steps of S32-S33; S35. Weld the connecting parts to obtain the skeleton.

10. The skeleton-type detachable segmented fan blade and the processing method thereof according to claim 8 are characterized in that: In S5, the blade connection is stepped and a sealing gasket is provided at the blade connection; The blade joints are in close contact.

Images