A vertical drilling device for connecting a lightning protection conductive metal mesh and a method for installing the metal mesh

Abstract

The present application relates to the field of lightning protection metal net of wind blade, and discloses a vertical drilling device for connecting lightning protection conducting metal net and a mounting method of connecting metal net, which comprises a working platform, a limiting support and a vacuum chuck, a through hole is formed in the center of the working platform, a fixed plate is fixedly installed on the top of the working platform, an optical shaft is fixedly installed at the corner of the top of the fixed plate, a lifting plate is slidably installed on the optical shaft, an assembly shaft is rotatably installed through the lifting plate, an assembly head is fixedly installed at the bottom end of the assembly shaft, and a drill bit is installed at the bottom of the assembly head.The present application realizes high requirements of drilling verticality based on the installation plane of the lightning receptor, realizes stable electrical connection of the connection between the lightning receptor and the metal net structure, avoids the problem that the lightning receptor and the metal net structure are difficult to replace and maintain after being poured together with the blade, and simultaneously realizes free cutting and polishing of the metal net hard point, thereby reducing the construction difficulty of the lightning receptor installation on site.

Description

Technical Field

[0001] This invention relates to the field of lightning protection metal mesh for wind turbine blades, and more specifically, to a vertical drilling device for connecting lightning conduction metal mesh and an installation method for connecting the metal mesh. Background Technology

[0002] Wind power generation refers to the conversion of wind kinetic energy into mechanical kinetic energy, and then into electrical kinetic energy. It involves a wind turbine rotating under the influence of wind, converting the wind's kinetic energy into the mechanical energy of the turbine shaft. A generator then rotates under the drive of the turbine shaft to generate electricity. This is an important form of wind energy utilization. Wind power generation inevitably involves wind turbines and blades. Since the blades need to be installed at high altitudes, there is a risk of electric shock. Therefore, a metal mesh is typically laid on the outer surface of the blades and connected to conductive components. Traditionally, the metal mesh structure and conductive connectors are installed together with the wind turbine blades in the casing and then injected. If the connection becomes loose and adhesive seeps into the conductive interface, including the resin lightning arrester (conductive connector), it becomes extremely difficult to disassemble, replace, or repair.

[0003] The invention patent, publication number CN116917618A, entitled "Lightning Protection System", provides a down conductor system for lightning protection of carbon fiber blades. The patent provides multiple conductive connection points set with metal mesh or metal foil, but does not specify the connection method of the conductive connection points.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Summary of the Invention

[0005] The purpose of this invention is to provide a vertical drilling device for connecting lightning protection conductive metal mesh and an installation method for connecting the metal mesh, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A vertical drilling device for connecting lightning protection conductive metal mesh and an installation method for connecting the metal mesh are disclosed. The device includes a working platform, a limiting bracket hinged to the outer side of the working platform, a vacuum suction cup fixedly installed at the bottom of the limiting bracket, a through hole in the center of the working platform, a fixing plate fixedly installed on the top of the working platform, an optical axis fixedly installed at one corner of the top of the fixing plate, a lifting plate slidably installed on the optical axis, an assembly shaft rotatably installed through the lifting plate, an assembly head fixedly installed at the bottom end of the assembly shaft, and a drill bit installed at the bottom of the assembly head, with the drill bit facing the through hole.

[0007] Furthermore, the limiting bracket has a protrusion integrally provided at one end facing the working platform, and a hinge hole is provided on the protrusion. A hinge seat is integrally provided on the outer wall of the working platform, and a hinge shaft is installed on the hinge seat. The protrusion is inserted into the hinge seat, and the hinge shaft passes through the hinge hole.

[0008] Furthermore, the bottom of the outer wall of the limiting bracket facing the protrusion is provided with a slope.

[0009] Furthermore, a connecting nozzle is fixedly installed on the top of the vacuum suction cup, and the top end of the connecting nozzle passes through the limiting bracket.

[0010] Furthermore, the fixing plate has a through hole directly opposite the through hole, and the top of the fixing plate has a groove extending along its width direction, which communicates with the top of the through hole. Fixing holes are provided at both corners on the side of the fixing plate away from the through hole. The bottom end of the optical axis is fixedly installed in the fixing hole. A notch is provided at the bottom of the side of the fixing plate away from the fixing hole, which is connected to the through hole.

[0011] Furthermore, a calibration block is fixedly installed at the bottom of the work platform. The calibration block is in the shape of an inverted frustum and is fixedly installed at the bottom of the work platform. A calibration hole is opened in the center of the calibration block, and the calibration hole is set directly opposite the through hole.

[0012] Furthermore, there are two lifting plates, which are fixedly connected by a sliding sleeve. The sliding sleeve is slidably fitted outside the optical shaft. A bearing is installed on the side of the lifting plate away from the sliding sleeve. The assembly shaft is rotatably mounted on the lifting plate through the bearing. A spring is also fitted outside the optical shaft, and the spring is located between the fixed plate and the sliding sleeve.

[0013] A method for installing a connecting metal mesh onto blades using the aforementioned vertical drilling device includes the following steps: Step 1: Fabrication of the metal mesh hard-point grounding structure: Select a grounding lightning protection metal mesh, punch holes, and form it as a whole by metal melting or mechanical connection of upper and lower hard points. The thickness direction of the upper and lower hard points does not need to be consistent, and the surface must be smooth and flat. Step 2, Installation of metal mesh hard point grounding process: Apply non-adhesive tape and soft silicone pad to the smooth and flat side of the metal mesh hard point, and then cast it together with the blade outer shell. Step 3: Attach grounding blocks to the inside of the blade: Attach grounding blocks to the inner shell of the blade, ensuring that the grounding blocks are aligned with the hard points of the metal mesh in the thickness direction of the blade. Step 4: Remove the soft silicone pad and adhesive tape from the blade demolding process. Remove the soft silicone pad and adhesive tape, and clean the hardened surface of the metal mesh with alcohol or acetone. Step 5: Fixing the blade outer shell with a vertical drilling fixture: Align the through hole of the calibration work platform with the center of the hard point of the metal mesh, connect the connecting nozzle to the vacuum pump through the air pipe, and then turn on the vacuum pump to draw a vacuum, so that the lower surface of the calibration block is attached to the hard point of the metal mesh to form a reference surface. Finally, install the motor on the assembly shaft, start the motor and press down the lifting plate to make the drill bit drill the hard point of the metal mesh and the blade body. Step 6: Tapping the grounding block and installing the lightning arrester: Use a tap of the matching specification to tap the grounding block, install the lightning arrester in the drilled hole, and use a torque wrench to install the lightning arrester and apply torque to achieve a reliable electrical connection between the lightning arrester and the metal mesh hard-point grounding structure and the grounding block.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention features a limiting bracket that can be fixed to the blade using a vacuum suction cup. The limiting bracket is also hinged to the outside of the work platform. Therefore, the work platform can be positioned using the vacuum suction cup. Furthermore, the hinged connection allows for adjustment based on the different curvatures of the blade, ensuring the work platform is positioned at various locations. A calibration block provides calibration for the drill bit's passage, ensuring accuracy during drilling. Subsequent drilling only requires pressing down the lifting plate. This overall design provides support and positioning for the drill bit and, in conjunction with the motor's downward pressure, enables precise drilling, allowing the worker to achieve rapid drilling simply by applying downward pressure.

[0015] This invention achieves high requirements for drilling verticality based on the lightning arrester mounting plane, realizes stable electrical connection between the lightning arrester and the metal mesh structure, avoids the problem of difficulty in replacement and maintenance after the lightning arrester, metal mesh structure and blades are injected together, and at the same time, this invention realizes the elimination of cutting and grinding of hard points of the metal mesh, reducing the construction difficulty of on-site lightning arrester installation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a vertical drilling device for connecting a lightning protection conductive metal mesh according to an embodiment of the present invention. Figure 2 This is an assembly diagram of a limiting bracket and a vacuum suction cup in a vertical drilling device for connecting a lightning protection conductive metal mesh according to an embodiment of the present invention. Figure 3This is a schematic diagram of the working platform in a vertical drilling device for connecting a lightning protection conductive metal mesh according to an embodiment of the present invention. Figure 4 This is a schematic diagram of the top structure of the working platform in a vertical drilling device for connecting a lightning protection conductive metal mesh according to an embodiment of the present invention. Figure 5 This is a schematic diagram of the bottom structure of the working platform in a vertical drilling device for connecting a lightning protection conductive metal mesh according to an embodiment of the present invention. Figure 6 This is an assembly diagram of the optical axis and the lifting plate in a vertical drilling device for connecting a lightning protection conductive metal mesh according to an embodiment of the present invention. Figure 7 This is a diagram showing the working state of a vertical drilling control device in an installation method for connecting metal mesh. Figure 8 This is a top view of a lightning protection metal mesh in an installation method for connecting metal mesh; Figure 9 This is a side sectional view of a lightning protection metal mesh in an installation method for connecting metal mesh; Figure 10 This is a schematic diagram of a method for installing a soft silicone pad on a hard point of a metal mesh. Figure 11 This is a schematic diagram of a method for installing lightning protection metal mesh, in which the metal mesh is laid on the outside of the blade body.

[0018] Figure 12 A schematic diagram of the structure of a lightning protection metal mesh after drilling and assembling a lightning arrester in an installation method for connecting metal mesh.

[0019] Figure label: 1. Working platform; 2. Limiting bracket; 3. Vacuum suction cup; 4. Through hole; 5. Fixing plate; 6. Optical axis; 7. Lifting plate; 8. Assembly shaft; 9. Assembly head; 10. Drill bit; 11. Protrusion; 12. Hinge hole; 13. Ramp; 14. Connecting nozzle; 15. Hinge seat; 16. Hinge shaft; 17. Through hole; 18. Groove; 19. Fixing hole; 20. Notch; 21. Calibration block; 22. Calibration hole; 23. Sliding sleeve; 24. Bearing; 25. Spring; 27. Air tube; 28. Vacuum pump; 100. Blade body; 101. Blade outer shell; 102. Blade inner shell; 103. Grounding block; 104. Lightning protection metal mesh; 105. Metal mesh hard point; 106. Adhesive tape; 107. Soft silicone pad; 108. Lightning arrester. Detailed Implementation

[0020] The invention will now be further described with reference to the accompanying drawings and specific embodiments: Example 1: Please refer to Figures 1 to 6 According to an embodiment of the present invention, a vertical drilling device for connecting a lightning protection conductive metal mesh includes a working platform 1, a limiting bracket 2 hinged to the outer side of the working platform 1, a vacuum suction cup 3 fixedly installed at the bottom of the limiting bracket 2, a through hole 4 opened in the center of the working platform 1, a fixing plate 5 fixedly installed on the top of the working platform 1, an optical axis 6 fixedly installed at one end corner of the top of the fixing plate 5, a lifting plate 7 slidably installed on the optical axis 6, an assembly shaft 8 rotatably installed through the lifting plate 7, an assembly head 9 fixedly installed at the bottom end of the assembly shaft 8, and a drill bit 10 installed at the bottom of the assembly head 9, with the drill bit 10 facing the through hole 4. The vacuum suction cup 3 is attached to the outside of the blade. The working platform 1 can be positioned by the limiting bracket 2. Then, the motor is assembled with the end of the assembly shaft 8. The motor is started to drive the assembly shaft 8. The assembly shaft 8 then drives the drill bit 10 to rotate through the assembly head 9. At this time, the motor is pressed down to change the height of the lifting plate 7 outside the optical axis 6. Then, the end of the drill bit 10 passes through the through hole 4 to finally drill a hole in the outer wall of the blade, which facilitates the subsequent laying of metal mesh on the outside of the blade and the fixing of the metal mesh.

[0021] The limiting bracket 2 has a protrusion 11 integrally formed on one end facing the working platform 1. The protrusion 11 has a hinge hole 12. A hinge seat 15 is integrally formed on the outer wall of the working platform 1. A hinge shaft 16 is installed on the hinge seat 15. The protrusion 11 is inserted into the hinge seat 15, and the hinge shaft 16 passes through the hinge hole 12. Through the connection between the protrusion 11 and the hinge seat 15, the angle between the limiting bracket 2 and the working platform 1 can be changed, so that the working platform 1 can be positioned at different parts on the blade.

[0022] The bottom of the outer wall of the limiting bracket 2 facing the protrusion 11 has a ramp 13. The ramp 13 makes the swing of the limiting bracket 2 relative to the hinge seat 15 ranged, avoiding excessive adjustment.

[0023] A connecting nozzle 14 is fixedly installed on the top of the vacuum suction cup 3, and the top end of the connecting nozzle 14 passes through the limiting bracket 2. The connecting nozzle 14 allows the vacuum suction cup 3 to be easily connected to external equipment such as air pumps, so that the vacuum suction cup 3 can be adsorbed on the outside of the blade.

[0024] The fixing plate 5 has a through hole 17 directly opposite the through hole 4, and a groove 18 extending along its width is formed on the top of the fixing plate 5, communicating with the top of the through hole 17. Fixing holes 19 are formed at both corners of the side of the fixing plate 5 away from the through hole 17, and the bottom end of the optical axis 6 is fixedly installed in the fixing holes 19. A notch 20 is formed on the bottom side of the fixing plate 5 away from the fixing holes 19, and the notch 20 is connected to the through hole 17. The through hole 17 provides a passage for the drill bit 10 to pass through the through hole 4, while the fixing holes 19 provide support for the installation of the optical axis 6.

[0025] A calibration block 21 is fixedly installed at the bottom of the working platform 1. The calibration block 21 is shaped like an inverted frustum and is fixedly installed at the bottom of the working platform 1. A calibration hole 22 is opened in the center of the calibration block 21, which is directly opposite the through hole 4. The calibration hole 22 on the calibration block 21 can be used to calibrate the end of the drill bit 10. When the end of the drill bit 10 passes through the calibration hole 22, the drilling of the drill bit 10 can be calibrated to ensure the accuracy of drilling.

[0026] Two lifting plates 7 are provided, and the two lifting plates 7 are fixedly connected by a sliding sleeve 23. The sliding sleeve 23 is slidably sleeved on the outside of the optical shaft 6. A bearing 24 is installed on the side of the lifting plate 7 away from the sliding sleeve 23. The assembly shaft 8 is rotatably mounted on the lifting plate 7 through the bearing 24. A spring 25 is also sleeved on the outside of the optical shaft 6, and the spring 25 is located between the fixed plate 5 and the sliding sleeve 23. The setting of two lifting plates 7 can ensure the stable installation of the assembly shaft 8, and the spring 25 can provide support for the lifting plates 7. When the motor is connected to the assembly shaft 8, the drill bit 10 can be automatically fed by pressing down the lifting plate 7 with the motor, thereby realizing the drilling operation. Removing the pressure applied to the motor can realize the automatic rise and reset of the drill bit 10.

[0027] Through the above-described solution of the present invention, the limiting bracket 2 can be fixed on the blade by the vacuum suction cup 3, and the limiting bracket 2 is hinged to the outside of the working platform 1. Therefore, the working platform 1 can be positioned by the vacuum suction cup 3. Since the limiting bracket 2 is hinged to the working platform 1, it can be adjusted according to the different curvature surfaces on the blade to ensure that the working platform 1 is positioned in different positions. The calibration block 21 can provide calibration for the passage of the drill bit 10, ensuring accuracy during the drilling process. When drilling, only the lifting plate 7 needs to be pressed down. The overall design provides support and positioning for the drill bit 10 and can also cooperate with the motor to achieve precise drilling, allowing the worker to achieve rapid drilling simply by providing downward pressure.

[0028] Example 2: Please refer to Figures 7 to 12For Embodiment 1, this embodiment also provides an installation method for mounting a metal mesh onto a blade using the aforementioned vertical drilling device, which mainly includes the following steps: Step 1: Fabrication of the 105 grounding structure with hard points on the metal mesh: Select the grounding lightning protection metal mesh 104, punch holes, and form it as a whole by melting metal or mechanically connecting the upper and lower hard points. The thickness direction of the upper and lower hard points does not need to be consistent, and the surface must be smooth and flat.

[0029] Step 2, installation of grounding process for metal mesh hard point 105: Apply non-adhesive tape 106 and soft silicone pad 107 to the flat and smooth side of metal mesh hard point 105, and cast it together with the blade outer shell 101.

[0030] Step 3: Attach grounding block 103 to the inside of the blade: Attach grounding block 103 to the inner shell 102 of the blade. Grounding block 103 needs to be aligned with the metal mesh hard point 105 in the thickness direction of the blade.

[0031] Step 4: Remove the soft silicone pad 107 and the adhesive tape 106 from the blade demolding process. Remove the soft silicone pad 107 and the adhesive tape 106, and wipe the surface of the metal mesh hard points 105 clean with alcohol or acetone.

[0032] Step 5: Fix the vertical drilling fixture on the blade outer shell 101: Align the through hole 4 of the calibration work platform 1 with the center of the metal mesh hard point 105, connect the connecting nozzle 14 to the vacuum pump 28 through the air pipe 27, and then turn on the vacuum pump 28 to draw a vacuum, so that the lower surface of the calibration block 21 is attached to the metal mesh hard point 105 to form a reference surface. Finally, install the motor on the assembly shaft 8, start the motor and press down the lifting plate 7 to make the drill bit 10 drill holes in the metal mesh hard point 105 and the blade body 100.

[0033] Step 6: Tapping the grounding block 103 and installing the lightning arrester 108: Use a tap of the matching specification to tap the grounding block 103, install the lightning arrester 108 in the drilled hole, and use a torque wrench to install the lightning arrester 108 and apply torque to achieve a reliable electrical connection between the lightning arrester 108 and the grounding structure component of the metal mesh hard point 105 and the grounding block 103.

[0034] Adjust the vacuum suction cup 3 and the limiting bracket 2 according to the fixed arc surface of the blade so that the vacuum suction cup 3 is firmly attached to the outer shell 101 of the blade.

[0035] Through the above-mentioned solution of the present invention, the present invention realizes the electrical connection between the lightning arrester 108 and the metal mesh structure after the blade is demolded, avoiding the problem that the lightning arrester 108 and the metal mesh structure are difficult to replace and maintain after being poured together with the blade. At the same time, the present invention realizes the elimination of cutting and grinding of the hard points 105 of the metal mesh, reducing the construction difficulty of installing the lightning arrester 108 on site.

[0036] To facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process will be described in detail below.

[0037] The present invention provides a limiting bracket 2 that can be fixed to the blade by a vacuum suction cup 3. The limiting bracket 2 is also hinged to the outside of the working platform 1. Therefore, the working platform 1 can be positioned by the vacuum suction cup 3. Since the limiting bracket 2 is hinged to the working platform 1, it can be adjusted according to the different curvatures of the blade to ensure that the working platform 1 is positioned in different positions. The calibration block 21 can provide calibration for the passage of the drill bit 10, ensuring accuracy during the drilling process. When drilling, only the lifting plate 7 needs to be pressed down. The overall design provides support and positioning for the drill bit 10 and can also be used in conjunction with the downward pressure of the motor to achieve precise drilling, so that the worker only needs to provide downward pressure to achieve rapid drilling.

[0038] This invention achieves high requirements for the verticality of drilling based on the mounting plane of the lightning arrester 108, and realizes a stable electrical connection between the lightning arrester 108 and the metal mesh structure. It avoids the problem of difficulty in replacement and maintenance after the lightning arrester 108 and the metal mesh structure are injected together with the blade. At the same time, this invention realizes the elimination of cutting and grinding of the hard points 105 of the metal mesh, reducing the construction difficulty of installing the lightning arrester 108 on site.

[0039] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertical drilling device for connecting lightning protection conductive metal mesh and an installation method for connecting the metal mesh, characterized in that, The system includes a work platform (1), a limit bracket (2) is hinged to the outside of the work platform (1), a vacuum suction cup (3) is fixedly installed at the bottom of the limit bracket (2), a through hole (4) is opened in the center of the work platform (1), a fixing plate (5) is fixedly installed on the top of the work platform (1), an optical axis (6) is fixedly installed at one end corner of the top of the fixing plate (5), a lifting plate (7) is slidably installed on the optical axis (6), an assembly shaft (8) is rotatably installed through the lifting plate (7), an assembly head (9) is fixedly installed at the bottom end of the assembly shaft (8), and a drill bit (10) is installed at the bottom of the assembly head (9), with the drill bit (10) facing the through hole (4).

2. The vertical drilling device for connecting lightning protection conductive metal mesh according to claim 1, characterized in that, The limiting bracket (2) is integrally provided with a protrusion (11) at one end facing the working platform (1). The protrusion (11) is provided with a hinge hole (12). The outer wall of the working platform (1) is integrally provided with a hinge seat (15). The hinge seat (15) is installed with a hinge shaft (16). The protrusion (11) is inserted into the hinge seat (15), and the hinge shaft (16) is provided through the hinge hole (12).

3. A vertical drilling device for connecting lightning protection conductive metal mesh according to claim 2, characterized in that, The limiting bracket (2) has a ramp (13) for limiting the bottom of the outer wall on the side facing the protrusion (11).

4. A vertical drilling device for connecting lightning protection conductive metal mesh according to claim 3, characterized in that, The top of the vacuum suction cup (3) is fixedly installed with a connecting nozzle (14), and the top end of the connecting nozzle (14) passes through the limiting bracket (2).

5. A vertical drilling device for connecting lightning protection conductive metal mesh according to claim 4, characterized in that, The fixing plate (5) has a through hole (17) facing the through hole (4). The top of the fixing plate (5) has a groove (18) along its width direction. The groove (18) is connected to the top of the through hole (17). The fixing plate (5) has fixing holes (19) at both ends of the side away from the through hole (17). The bottom end of the optical axis (6) is fixedly installed in the fixing hole (19). The bottom of the side of the fixing plate (5) away from the fixing hole (19) has a notch (20) connected to the through hole (17).

6. A vertical drilling device for connecting lightning protection conductive metal mesh according to claim 5, characterized in that, A calibration block (21) is fixedly installed at the bottom of the work platform (1). The calibration block (21) is in the shape of an inverted frustum and is fixedly installed at the bottom of the work platform (1). A calibration hole (22) is opened in the center of the calibration block (21), and the calibration hole (22) is set opposite to the through hole (4).

7. A vertical drilling device for connecting lightning protection conductive metal mesh according to claim 6, characterized in that, There are two lifting plates (7), and the two lifting plates (7) are fixedly connected by a sliding sleeve (23). The sliding sleeve (23) is slidably sleeved on the outside of the optical shaft (6). A bearing (24) is installed on the side of the lifting plate (7) away from the sliding sleeve (23). The assembly shaft (8) is rotatably installed on the lifting plate (7) through the bearing (24). A spring (25) is also sleeved on the outside of the optical shaft (6). The spring (25) is located between the fixed plate (5) and the sliding sleeve (23).

8. A method for installing a connecting metal mesh onto a blade using the vertical drilling device described in claim 7, characterized in that, Includes the following steps: Step 1, Fabrication of grounding structure component for metal mesh hard point (105): Select grounding lightning protection metal mesh (104), punch holes and form it as a whole by metal melting or mechanical connection of upper and lower hard points. The thickness direction of the upper and lower hard points does not need to be consistent, and the surface needs to be smooth and flat. Step 2, installation of grounding process for metal mesh hard point (105): Apply non-adhesive tape (106) and soft silicone pad (107) to the flat and smooth side of the metal mesh hard point (105), and cast it together with the blade outer shell (101); Step 3, attach grounding block (103) to the inside of the blade: attach grounding block (103) to the inner shell (102) of the blade. The grounding block (103) needs to be aligned with the metal mesh hard point (105) in the thickness direction of the blade. Step 4: Demolding the blades and removing the soft silicone pad (107) and the adhesive tape (106): Remove the soft silicone pad (107) and the adhesive tape (106), and wipe the surface of the metal mesh hard spots (105) clean with alcohol or acetone. Step 5: Fixing the vertical drilling fixture on the blade outer shell (101): Align the through hole (4) of the calibration work platform (1) with the center of the metal mesh hard point (105), connect the connecting nozzle (14) to the vacuum pump (28) through the air pipe (27), and then turn on the vacuum pump (28) to draw a vacuum, so that the lower surface of the calibration block (21) is attached to the metal mesh hard point (105) to form a reference surface. Finally, install the motor on the assembly shaft (8), start the motor and press down the lifting plate (7) to make the drill bit (10) drill the metal mesh hard point (105) and the blade body (100). Step 6: Tapping the grounding block (103) and installing the lightning arrester (108): Use a matching tap to tap the grounding block (103), install the lightning arrester (108) in the drilled hole, and use a torque wrench to install the lightning arrester (108) and apply torque to achieve a reliable electrical connection between the lightning arrester (108), the metal mesh hard point (105) grounding structure and the grounding block (103).

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