Fan blade welding positioning device

Abstract

The utility model relates to the technical field of fan blade welding, in particular to a fan blade welding positioning device which is characterized in that a plurality of fan blade positioning mechanisms surround a bearing positioning mechanism, and a plurality of bearing assemblies on a first bearing strip and a second bearing strip of each fan blade positioning mechanism abut against the surface of a fan blade; the multiple bearing assemblies are arranged on the second bearing strip to form multiple contact points of the multiple bearing assemblies and the fan blades, the multiple contact points effectively disperse welding stress and reduce deformation, caused by stress concentration, of the fan blades, the limiting pieces are arranged on the second bearing strip in a sliding mode in cooperation, and accurate limiting of the fan blades can be achieved according to the requirements of the fan blades of different specifications; and the welding quality and the product precision of the fan blade are obviously improved.

Description

Technical Field

[0001] This application relates to the field of wind turbine blade welding technology, and in particular to a wind turbine blade welding positioning device. Background Technology

[0002] The core function of a fan is to convert electrical energy into mechanical energy through a motor, and then compress and transport gaseous media such as air, realizing the energy conversion process of pressure increase and flow regulation. The fan blades are assembled from bearings and multiple blades through a welding process.

[0003] In related technologies, during the current bearing and fan blade welding process, the fan blade is placed on a positioning device. Typically, the fan blade and the positioning device are in single-point or line contact and are fixed by a clamp to maintain a relatively stable position during the welding process.

[0004] However, this method has the following drawbacks: the stress generated during the welding process is often concentrated at the contact point or on the contact line and cannot be effectively distributed throughout the entire component. This stress concentration may cause component deformation. Furthermore, during the welding process, the stress is concentrated at the contact point or on the contact line, resulting in low stability and making the fan blades prone to displacement due to external forces, which in turn affects the welding quality and product precision. Utility Model Content

[0005] To address the aforementioned problems, this application provides a wind turbine blade welding positioning device.

[0006] The technical solution of the wind turbine blade welding positioning device provided in this application is as follows:

[0007] A wind turbine blade welding positioning device is installed on a wind turbine blade welding equipment. It includes a support frame, a blade positioning mechanism, and a bearing positioning mechanism. The blade positioning mechanism is fixed on the support frame. Several blade positioning mechanisms are provided, and the several blade positioning mechanisms are arranged around the bearing positioning mechanism. Each blade positioning mechanism includes a first support bar and a second support bar. Support components are provided on the upper surfaces of the first support bar and the second support bar. Several support components are provided, and the support components are vertically fixed on the first support bar and the second support bar.

[0008] By adopting the above technical solution, the fan blade is placed on the fan blade positioning mechanism, and several bearing components abut against the surface of the fan blade, forming multiple sets of contact points between the bearing components and the fan blade. These contact points can effectively distribute stress throughout the entire fan blade during the welding process, reducing stress concentration at a single contact point or contact line, thereby reducing the deformation of the fan blade caused by stress concentration. At the same time, the setting of multiple contact points also improves the stability of the welding process, reduces the displacement of the fan blade caused by external forces, and thus ensures the improvement of welding quality and product precision.

[0009] Preferably, the bearing assembly includes a threaded rod and a nut. The upper surfaces of the first bearing bar and the second bearing bar are provided with threaded holes. The threaded rod is threadedly engaged with the threaded holes, and the nut is threadedly engaged with the threaded rod. The nut abuts against the upper surfaces of the first bearing bar and the second bearing bar.

[0010] By adopting the above technical solution, the threaded rod is fixed to the upper surfaces of the first and second bearing bars by the abutment of the nut. The fan blade is placed on the fan blade positioning mechanism, and several screws abut against the fan blade, providing stable load-bearing for the fan blade. At the same time, multiple contact points are formed, effectively dispersing the generated stress, thereby significantly reducing the deformation of the fan blade caused by stress concentration, improving the stability of the welding process, reducing the fan blade offset caused by external forces, and ensuring the improvement of welding quality and product precision.

[0011] Preferably, the fan blade positioning mechanism further includes a limiting member, and a plurality of limiting members are provided. The plurality of limiting members are slidably disposed on the second bearing strip. The limiting member includes a limiting block and a sliding strip. The limiting block is vertically fixed on the sliding strip. The sliding strip is provided with a fixing groove. The limiting member is fixed to the upper surface of the second bearing strip by the bearing assembly. The threaded rod passes through the fixing groove and the nut is threadedly engaged with the threaded rod. The nut abuts against the upper surface of the sliding strip.

[0012] By adopting the above technical solution, the threaded rod passes through the fixing groove, the nut abuts against the upper surface of the sliding strip, and the nut applies a preload, thus achieving a stable fixation of the limiting component on the upper surface of the second bearing strip. During the welding process, the edge of the fan blade can abut against the side wall of the limiting block, thereby limiting the fan blade and restricting its offset. When it is necessary to replace the fan blade with a different specification, the nut and the threaded rod are threaded together, and the nut separates from the upper surface of the sliding strip. At this time, the limiting component can slide on the second bearing strip, and the position of the limiting component can be adjusted according to the fan blade of different sizes. When adjusted to a certain position, the nut is threaded together with the threaded rod again, and the nut abuts against the upper surface of the sliding strip. The nut applies a preload to fix the sliding strip on the second bearing strip, ensuring that the fan blade is accurately limited during welding or processing.

[0013] Preferably, the bearing positioning mechanism includes a positioning block and a connecting strip. The connecting strip is arranged around the outside of the positioning block. One end of the connecting strip is fixedly connected to the outer peripheral wall of the positioning block, and the other end of the connecting strip is fixedly connected to the inner wall of the support frame. The positioning block is provided with a positioning groove. The edge of the positioning groove is provided with a limiting strip. Several limiting strips are provided. The limiting strips are fixed perpendicularly to the upper surface of the edge of the positioning groove.

[0014] By adopting the above technical solution, when the bearing is placed in the positioning groove, the limiting strip abuts against the outer wall of the bearing. Through the contact of several limiting strips with the bearing, the displacement of the bearing is restricted, and the offset of the bearing caused by vibration or external force during the welding process is reduced.

[0015] Preferably, the device also includes a base, which is fixed to the wind turbine blade welding equipment, and the support frame is disposed on the upper surface of the base, and the support frame and the base are detachably connected.

[0016] By adopting the above technical solution, since the support frame carries the fan blade positioning mechanism and the bearing positioning mechanism, when a larger fan blade is needed or when the fan blade positioning mechanism and the bearing positioning mechanism are damaged, the support frame can be directly disassembled to further replace the fan blade positioning mechanism and the bearing positioning mechanism, thereby improving the equipment's versatility and maintenance efficiency.

[0017] Preferably, the base is provided with positioning posts, and there are several positioning posts. The support frame is provided with positioning holes, and the positioning holes are inserted and engaged with the positioning posts.

[0018] By adopting the above technical solution, multiple positioning columns are inserted and matched with positioning holes, which can ensure the consistency of the position of the support frame after installation on the base each time, even if the support frame is disassembled and replaced multiple times, thus reducing welding errors.

[0019] Preferably, it further includes a fixing mechanism, wherein a plurality of fixing mechanisms are arranged along the circumference of the base, the fixing mechanism includes a drive cylinder and a clamp, the drive cylinder is fixedly connected to the support frame, and the piston rod of the drive cylinder is fixedly connected to the clamp.

[0020] By adopting the above technical solution, the fixing mechanism is evenly distributed along the circumference of the base, which can apply clamping force to the bearing frame from multiple directions at the same time, effectively dispersing the impact or vibration of the bearing frame during welding, reducing the micro-movement or deformation of the bearing frame during processing, and ensuring the welding quality of the fan blades.

[0021] Preferably, the support frame is provided with a handle, which is hinged to the edge of the support frame.

[0022] By adopting the above technical solution, the handle can be hinged to the edge of the support frame, allowing the handle to rotate around the edge and be folded away when not in use, reducing the space occupied. When moving or adjusting the position of the support frame, the handle can be unfolded as a gripping point, improving the ease of operation.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Multiple sets of fan blade positioning mechanisms are arranged around the bearing positioning mechanism. Each fan blade positioning mechanism includes multiple sets of bearing components. The multiple sets of bearing components abut against the fan blades, forming multiple contact points between the bearing components and the fan blades. The multiple contact points effectively disperse welding stress and reduce the deformation of the fan blades caused by stress concentration. At the same time, the setting of multiple contact points also improves the stability of the welding process and reduces the offset of the fan blades caused by external forces, thereby ensuring the improvement of welding quality and product precision.

[0025] 2. The positioning block of the bearing positioning mechanism is provided with a positioning groove, and the edge of the positioning groove is provided with a limit strip. The limit strip abuts against the outer wall of the bearing, reducing the bearing displacement caused by vibration or external force during the welding process and improving the welding stability.

[0026] 3. By making the support frame and base detachable, the fan blade positioning mechanism and bearing positioning mechanism can be quickly replaced. This not only adapts to the needs of larger fan blades, but also allows for direct replacement of the support frame to replace the fan blade positioning mechanism and bearing positioning mechanism when they are damaged, thus improving the equipment's versatility and maintenance efficiency. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0028] Figure 2 yes Figure 1 An enlarged diagram of A in the diagram.

[0029] Figure 3 This is a schematic diagram of the structure in which the fan blades and bearings are placed on an embodiment of this application.

[0030] Figure 4 This is a schematic diagram of the bearing positioning mechanism in the embodiments of this application.

[0031] Explanation of reference numerals in the attached drawings: 1. Base; 11. Positioning post; 2. Bearing frame; 21. Positioning hole; 3. Fan blade positioning mechanism; 31. First bearing strip; 32. Second bearing strip; 33. Limiting component; 331. Limiting block; 332. Sliding strip; 3321. Fixing groove; 34. Abutment block; 35. Sliding groove; 4. Bearing positioning mechanism; 41. Positioning block; 411. Positioning groove; 412. Limiting strip; 42. Connecting strip; 5. Fixing mechanism; 51. Drive cylinder; 52. Clamp; 6. Handle; 7. Bearing assembly; 71. Threaded rod; 72. Nut. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a welding positioning device for wind turbine blades. (Refer to...) Figure 1 A wind turbine blade welding positioning device is installed on a wind turbine blade welding equipment. It includes a base 1, a support frame 2, a blade positioning mechanism 3, and a bearing positioning mechanism 4. The blade positioning mechanism 3 and the bearing positioning mechanism 4 are both fixed on the support frame 2. The support frame 2 is set on the base 1, and the base 1 and the support frame 2 are detachably connected.

[0034] Specifically, the base 1 is installed on the wind turbine blade welding equipment. The structure of the support frame 2 is circular. The support frame 2 is provided with positioning holes 21. In this example, there are four positioning holes 21, which are evenly distributed on the edge of the support frame 2. The base 1 is provided with positioning posts 11 at the corresponding positions. There are also four positioning posts 11. The positioning posts 11 are vertically fixed on the base 1. The positioning posts 11 are inserted into the positioning holes 21 to realize the connection between the support frame 2 and the base 1.

[0035] Furthermore, a wind turbine blade welding positioning device also includes a fixing mechanism 5. Several fixing mechanisms 5 are arranged around the circumference of the support frame 2 and the base 1. In this embodiment, eleven fixing mechanisms 5 are provided, four of which are evenly arranged on the upper surface of the base 1 and the other seven are arranged on the upper surface of the support frame 2. The fixing mechanism 5 includes a drive cylinder 51 and a clamp 52. The drive cylinder 51 is fixedly connected to the upper surface of the base 1. The drive cylinder 51 is externally connected to an air supply device. The piston rod of the drive cylinder 51 is fixedly connected to the clamp 52. When the support frame 2 and the base 1 are connected by the positioning pin 11 and the positioning hole 21, the piston rod of the drive cylinder 51 drives the clamp 52 to press the support frame 2.

[0036] This demonstrates that the insertion and engagement of the positioning column 11 and the positioning hole 21 ensures consistent positioning after each installation, even with repeated disassembly and replacement of the support frame 2, reducing welding errors. The fixing mechanism 5 is evenly distributed around the circumference of the support frame 2, and the piston rod of the driving cylinder 51 drives the clamp 52 to apply clamping force to the support frame 2 from multiple directions simultaneously, effectively dispersing the impact or vibration of the support frame 2 during welding, reducing the micro-movement or deformation of the support frame 2 during processing, and ensuring the welding quality of the fan blade and bearing.

[0037] Meanwhile, the fixing mechanism 5 set on the fan blade positioning mechanism 3 drives the piston rod of the drive cylinder 51 to drive the clamp 52 to press and fix the fan blade, ensuring the stability of the fan blade and bearing during welding.

[0038] In addition, the support frame 2 is also equipped with handles 6. There are two handles 6. The handles 6 are hinged to the edge of the support frame 2. The hinges between the handles 6 and the edge of the support frame 2 allow the handles 6 to be rotated around the edge. When not in use, they can be folded up to reduce the space occupied. When moving or adjusting the position of the support frame 2, the handles 6 can be unfolded as gripping points, improving the ease of operation.

[0039] Reference Figure 2 On the other hand, the fan blade positioning mechanism 3 is fixed on the support frame 2. There are several fan blade positioning mechanisms 3. In this embodiment, there are seven fan blade positioning mechanisms 3, which are arranged around the bearing positioning mechanism 4.

[0040] Specifically, the fan blade positioning mechanism 3 includes a first support bar 31, a second support bar 32, and a support assembly 7. The first support bar 31 and the second support bar 32 are fixedly connected to the support frame 2. Since the support frame 2 is a circular structure with a through-hole in the middle, the first support bar 31 and the second support bar 32 extend to the middle area. At the same time, the fan blade positioning mechanism 3 also includes an abutment block 34, which is disposed between the first support bar 31 and the second support bar 32 and is fixedly connected to the upper surface of the support frame 2.

[0041] Furthermore, the fan blade positioning mechanism 3 also includes a limiting member 33. Several limiting members 33 are provided. In this embodiment, three limiting members 33 are provided, two of which are provided at both ends of the second bearing strip 32, and the other is provided on the upper surface of the abutment block 34.

[0042] Specifically, the limiting member 33 includes a limiting block 331 and a sliding strip 332. The sliding strip 332 has a fixing groove 3321 that extends through the upper and lower surfaces of the sliding strip 332. The second bearing strip 32 is provided with a sliding groove 35. The width of the sliding groove 35 matches the width of the sliding strip 332. The sliding strip 332 is slidably disposed in the sliding groove 35. The side wall of the sliding strip 332 abuts against the side wall of the sliding groove 35. The limiting block 331 is vertically fixed to the sliding strip 332. At the same time, the limiting member 33 is disposed on the upper surface of the abutment block 34, and the bottom of the limiting member 33 is slidably connected to the abutment block 34.

[0043] Furthermore, the fan blade positioning mechanism 3 is also provided with a bearing component 7, which includes a threaded rod 71 and a nut 72. Several bearing components 7 are provided. In this embodiment, six sets of bearing components 7 are provided, of which two sets of bearing components 7 are fixedly connected to the upper surface of the first bearing bar 31. Specifically, the upper surface of the first bearing bar 31 is provided with a threaded hole. The threaded rod 71 is threadedly engaged with the threaded hole, and the nut 72 is threadedly engaged with the threaded rod 71. The nut 72 abuts against the upper surface of the first bearing bar 31 so that the threaded rod 71 is fixed to the upper surface of the first bearing bar 31.

[0044] Meanwhile, three sets of bearing components 7 are disposed on the second bearing strip 32. One set of bearing components 7 is fixedly connected to the upper surface of the middle part of the second bearing strip 32, and the other two sets of bearing components 7 are disposed on the upper surface of the limiting member 33 which is slidably connected to the second bearing strip 32. In addition, one set of bearing components 7 is disposed on the upper surface of the limiting member 33 which is slidably connected to the abutment block 34.

[0045] Specifically, the upper surface of the middle part of the second bearing bar 32 is provided with a threaded hole, the threaded rod 71 is threadedly engaged with the threaded hole, the nut 72 is threadedly engaged with the threaded rod 71, and the nut 72 abuts against the upper surface of the second bearing bar 32 so that the threaded rod 71 is fixed to the upper surface of the first bearing bar 31.

[0046] On the other hand, both limiting members 33 are fixed on the sliding groove 35 of the second bearing strip 32 by the bearing assembly 7. The threaded rod 71 passes through the fixing groove 3321 and abuts against the groove wall of the sliding groove 35. The nut 72 is threadedly engaged with the threaded rod 71 and abuts against the upper surface of the sliding strip 332. The nut 72 applies a preload force to further fix the sliding strip 332 on the sliding groove 35.

[0047] Meanwhile, the limiting member 33 set on the upper surface of the abutment block 34, the threaded rod 71 passes through the fixing groove 3321 and abuts against the abutment block 34, the nut 72 is threadedly engaged with the threaded rod 71, the nut 72 abuts against the upper surface of the sliding strip 332, the nut 72 applies a preload force, and further fixes the sliding strip 332 on the abutment block 34.

[0048] Reference Figure 3 This explains that when the fan blade is placed in the fan blade positioning mechanism 3, the threaded rod 71, which is fixedly connected to the first bearing bar 31 and the second bearing bar 32, abuts against the surface of the fan blade, forming three contact points between the threaded rod 71 and the fan blade. These contact points can effectively distribute stress throughout the entire fan blade during the welding process, reducing stress concentration at a single contact point or contact line, thereby reducing the deformation of the component caused by stress concentration. At the same time, the setting of three contact points also improves the stability of the welding process, reduces the offset of the fan blade caused by external force, and thus ensures the improvement of welding quality and product precision.

[0049] Furthermore, the limiting member 33 is firmly fixed to the upper surface of the second bearing strip 32 and the abutment block 34 by the bearing component 7. The limiting block 331 allows one end edge and the front edge of the fan blade to abut against the side wall of the limiting block 331 during the welding process, thereby limiting the fan blade and restricting its deviation.

[0050] Meanwhile, when it is necessary to replace the fan blades of different specifications, the nut 72 is threaded into the threaded rod 71, and the nut 72 is separated from the upper surface of the sliding strip 332. At this time, the limiting member 33 can slide on the second bearing strip 32 and the abutment block 34. The position of the limiting member 33 can be adjusted according to the fan blades of different sizes. When adjusted to the determined position, the nut 72 is threaded into the threaded rod 71 again, and the nut 72 abuts against the upper surface of the sliding strip 332. The nut 72 applies a preload to fix the sliding strip 332 on the second bearing strip 32 and the abutment block 34, ensuring that the fan blades are accurately limited during welding or processing.

[0051] Reference Figure 4 On the other hand, the bearing positioning mechanism 4 includes a positioning block 41 and a connecting strip 42. The positioning block 41 and the connecting strip 42 are both disposed in the central area of ​​the ring of the support frame 2. There are several connecting strips 42. In this embodiment, there are five connecting strips 42. The five connecting strips 42 are arranged around the outside of the positioning block 41. One end of the connecting strip 42 is fixedly connected to the outer peripheral wall of the positioning block 41, and the other end of the connecting strip 42 is fixedly connected to the inner wall of the support frame 2 to fix the positioning block 41.

[0052] Furthermore, the positioning block 41 has a positioning groove 411, which is circular in shape. The positioning groove 411 serves as a support for the fan blades. Limiting strips 412 are provided on the edge of the positioning groove 411. Four limiting strips 412 are provided and evenly distributed on the edge of the positioning groove 411. The limiting strips 412 are fixed perpendicularly to the edge of the positioning groove 411.

[0053] This means that when the bearing is placed in the positioning groove 411, the limiting strip 412 abuts against the outer wall of the bearing. Through the contact of multiple limiting strips 412 with the bearing, the bearing is radially limited, which restricts the displacement of the bearing and reduces the offset of the bearing caused by vibration or external force during the welding process.

[0054] The implementation principle of the wind turbine blade welding positioning device in this application embodiment is as follows:

[0055] During the welding process between the wind turbine blades and the bearings, the operator first vertically places the bearing workpiece into the positioning groove of the positioning block. Radial constraint is achieved by four limiting strips evenly distributed along the edge of the positioning groove. Then, the blade is positioned onto the fan blade positioning mechanism, so that the curved surface of the blade contacts the threaded rods of the five sets of bearing components on the first and second bearing strips, forming five contact points between the threaded rods and the fan blade. Two sets of bearing components are located on the first bearing strip, and of the other three sets, one set is distributed in the middle of the second bearing strip, the other two sets are located at both ends of the second bearing strip and are located on the upper surface of the limiting member that slides on the second bearing strip, and the last set of bearing components is located on the upper surface of the limiting member that slides on the abutment block.

[0056] When it is necessary to adapt to different specifications of fan blades, quick adjustment can be performed by following these steps: loosen the nut that is threaded into the threaded rod of the limiting part to release the limiting part from the fixation, move the sliding strip along the length of the sliding groove of the second bearing strip and the abutment block to match the spacing of the limiting blocks with the profile of the fan blade, tighten the nut again, and apply preload to lock the sliding strip. After the adjustment is completed, the edge of the fan blade will form a three-point limiting constraint with the vertical sidewalls of the three limiting blocks.

[0057] During the welding process, the piston rod of the drive cylinder pushes four clamps to clamp synchronously along the circumference of the support frame. With the insertion and engagement of the base positioning column and the positioning hole of the support frame, the welding error between the fan blade and the bearing is reduced and the support frame is fixed. The piston rod of the drive cylinder drives the other seven clamps to press the fan blade, ensuring the stability of the welding between the fan blade and the bearing.

[0058] When the fan blade positioning mechanism and bearing positioning mechanism are damaged, you can hold the handle to disengage the positioning hole of the support frame from the positioning post for replacement.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A wind turbine blade welding positioning device, installed on a wind turbine blade welding equipment, characterized in that, The device includes a support frame (2), a fan blade positioning mechanism (3), and a bearing positioning mechanism (4). The fan blade positioning mechanism (3) is fixed on the support frame (2). Several fan blade positioning mechanisms (3) are provided, and several fan blade positioning mechanisms (3) are arranged around the bearing positioning mechanism (4). The fan blade positioning mechanism (3) includes a first support bar (31) and a second support bar (32). The upper surfaces of the first support bar (31) and the second support bar (32) are provided with support components (7). Several support components (7) are provided, and the support components (7) are vertically fixed on the first support bar (31) and the second support bar (32).

2. The wind turbine blade welding positioning device according to claim 1, characterized in that, The bearing assembly (7) includes a threaded rod (71) and a nut (72). The upper surfaces of the first bearing bar (31) and the second bearing bar (32) are provided with threaded holes. The threaded rod (71) is threadedly engaged with the threaded hole, and the nut (72) is threadedly engaged with the threaded rod (71). The nut (72) abuts against the upper surfaces of the first bearing bar (31) and the second bearing bar (32).

3. The wind turbine blade welding positioning device according to claim 2, characterized in that, The fan blade positioning mechanism (3) further includes a limiting member (33), and a plurality of limiting members (33) are provided. The plurality of limiting members (33) are slidably disposed on the second bearing strip (32). The limiting member (33) includes a limiting block (331) and a sliding strip (332). The limiting block (331) is vertically fixed on the sliding strip (332). The sliding strip (332) is provided with a fixing groove (3321). The limiting member (33) is fixed on the upper surface of the second bearing strip (32) by the bearing assembly (7). The threaded rod (71) passes through the fixing groove (3321). The nut (72) abuts against the upper surface of the sliding strip (332).

4. The wind turbine blade welding positioning device according to claim 2, characterized in that, The bearing positioning mechanism (4) includes a positioning block (41) and a connecting strip (42). The connecting strip (42) is arranged around the outside of the positioning block (41). One end of the connecting strip (42) is fixedly connected to the outer peripheral wall of the positioning block (41), and the other end of the connecting strip (42) is fixedly connected to the inner wall of the support frame (2). The positioning block (41) is provided with a positioning groove (411). The edge of the positioning groove (411) is provided with a limiting strip (412). There are several limiting strips (412). The limiting strips (412) are fixed perpendicularly to the upper surface of the edge of the positioning groove (411).

5. The wind turbine blade welding positioning device according to claim 1, characterized in that, It also includes a base (1), which is fixed on the wind turbine blade welding equipment. The support frame (2) is disposed on the upper surface of the base (1), and the support frame (2) and the base (1) are detachably connected.

6. A wind turbine blade welding positioning device according to claim 5, characterized in that, The base (1) is provided with positioning posts (11), and there are several positioning posts (11). The support frame (2) is provided with positioning holes (21), and the positioning holes (21) are inserted into the positioning posts (11).

7. A wind turbine blade welding positioning device according to claim 5, characterized in that, It also includes a fixing mechanism (5), which has several units arranged around the base (1). The fixing mechanism (5) includes a drive cylinder (51) and a clamp (52). The drive cylinder (51) is fixedly connected to the base (1), and the piston rod of the drive cylinder (51) is fixedly connected to the clamp (52). The clamp (52) is used to press the support frame (2).

8. The wind turbine blade welding positioning device according to claim 1, characterized in that, The support frame (2) is provided with a handle (6), which is hinged to the edge of the support frame (2).

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