Lightning protection detection device for blades of wind driven generator

Abstract

The invention discloses a wind driven generator blade lightning protection detection device, which belongs to the technical field of wind driven generator detection, and comprises a back plate, an electric control box, a transverse shaft sliding table, a longitudinal shaft sliding table, a self-protection type detection mechanism and a pre-adjusting type grinding mechanism, the longitudinal-axis sliding table and the transverse-axis sliding table are perpendicularly arranged, an adjustable mounting base is arranged on the side wall of the longitudinal-axis sliding table, the self-protection type detection mechanism and the pre-adjustment type grinding mechanism are arranged on the side, away from the back plate, of the adjustable mounting base, and a camera is mounted at the end of the self-protection type detection mechanism. The electric control box is electrically connected with the transverse shaft sliding table, the longitudinal shaft sliding table, the self-protection type detection mechanism, the pre-adjusting type grinding mechanism and the camera, and the dust suction mechanism is arranged on the outer side of the pre-adjusting type grinding mechanism. According to the lightning protection detection device for the wind driven generator blade, the blade lightning arrester can be polished and detected, the polishing thickness can be accurately controlled, and the risk of excessive polishing is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wind turbine detection, and in particular relates to a lightning protection detection device for blades of a wind turbine. Background Art

[0002] Wind power generation is a core technology for energy transformation and an important way to address climate change. One of its key components is wind turbine blades. Lightning strikes are one of the main causes of damage to wind turbine blades, and lightning arresters are important components for avoiding lightning strikes.

[0003] According to the national standard, the lightning channel test of wind turbine blades needs to be tested once a year. The existing traditional technology is to complete the grinding of the test parts and the clamping of the test line by personnel through high-altitude operations. High-altitude operations are high-risk and require very high professional skills, psychological and physical qualities of operators. With the development of drone technology, there have been attempts to use drone technology for testing recently, but because the location of the lightning receptor of wind turbine blades is on the side above the tip of the blade, it is difficult to complete the test using drones and it is basically impossible to achieve. Because the blades of wind turbines are exposed to the outdoors all year round, the metal of the lightning receptor is oxidized or dirt accumulates, and drones do not have a grinding process, which makes the test data inaccurate and cannot truly reflect the actual working conditions of the lightning channel. When grinding the lightning receptor, it is necessary to avoid excessive grinding. Excessive wear of the lightning receptor may cause damage to the conductive anti-rust coating on the surface of the lightning receptor, and may also reduce the strength of the material, especially at the welding point, which may cause fractures. In addition, the metal debris generated during grinding is easy to adhere to the detection probe, resulting in inaccurate test results. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a wind turbine blade lightning protection detection device, which can grind and detect the blade lightning arrester and can accurately control the grinding thickness to reduce the risk of over-grinding.

[0005] The technical solution adopted by the present invention is as follows: A lightning protection detection device for wind turbine blades provided by the present invention includes a back plate, an electrical control box, a transverse axis slide, a longitudinal axis slide, a self-protection detection mechanism and a pre-adjustment grinding mechanism. A hanging fixed lock is provided on the top of the back plate through a rope fixed connection. The transverse axis slide is fixedly installed on the side wall of the back plate. The longitudinal axis slide is arranged on the transverse axis slide. The longitudinal axis slide is vertically arranged with the transverse axis slide. An adjustable mounting seat is provided on the side wall of the longitudinal axis slide. The self-protection detection mechanism and the pre-adjustment grinding mechanism are arranged on the side of the adjustable mounting seat away from the back plate. A camera is installed at the end of the self-protection detection mechanism. The electrical control box is electrically connected to the transverse axis slide, the longitudinal axis slide, the self-protection detection mechanism, the pre-adjustment grinding mechanism and the camera respectively. A dust suction mechanism is provided on the outside of the pre-adjustment grinding mechanism.

[0006] The pre-adjusting grinding mechanism includes a grinding drive, a rotating sleeve, a pre-adjusting spring and a sliding grinding piece. The grinding drive is arranged on the side wall of the adjustable mounting seat, and the rotating sleeve is arranged at the end of the grinding drive. The rotating sleeve is arranged at an opening at one end away from the grinding drive. A retaining ring is coaxially fixedly provided on the opening side of the rotating sleeve. A pre-adjusting sliding disk is coaxially slidingly provided in the rotating sleeve. The rotating sleeve and the pre-adjusting sliding disk are circumferentially fixed. One end of the sliding grinding piece passes through the retaining ring and is arranged in the rotating sleeve and coaxially fixedly connected to the pre-adjusting sliding disk. The pre-adjusting spring is arranged between the pre-adjusting sliding disk and the rotating sleeve. A pressure sensor and a displacement sensor are provided on the side of the retaining ring close to the pre-adjusting sliding disk. The displacement sensor detects the sliding distance of the pre-adjusting sliding disk in real time. The pressure sensor and the displacement sensor are electrically connected to the electric control box respectively.

[0007] Initially, the pre-adjusting spring pushes the pre-adjusting sliding disk close to the retaining ring. At this time, the pressure sensor is pressurized to generate an electrical signal and send it to the electric control box. During grinding, the grinding drive is controlled to drive the rotating sleeve close to the lightning receptor. When the sliding grinding part fits the lightning receptor, as the rotating sleeve continues to approach the lightning receptor, the sliding grinding part overcomes the elastic force of the pre-adjusting spring and shrinks into the rotating sleeve. The sliding grinding part drives the pre-adjusting sliding disk to move away from the retaining ring. At this time, the output signal of the pressure sensor is 0 or close to 0. At the same time, the displacement sensor detects the distance from the pre-adjusting sliding disk to the retaining ring in real time. The displacement sensor is used to accurately control the sliding distance of the pre-adjusting sliding disk. When the pre-adjusting sliding disk moves to the appropriate position When the pre-adjustment slide disc is in the position, the grinding drive is controlled to stop extending. At this time, the rotating sleeve stops at the current position, and then grinding is carried out. As the oxide on the surface of the lightning receptor is polished off, the pre-adjustment spring pushes the pre-adjustment slide disc to slide close to the retaining ring, thereby keeping the sliding grinding piece always in contact with the lightning receptor. When the pre-adjustment slide disc slides to fit the retaining ring again, the pressure sensor generates an electrical signal and controls the grinding drive to stop driving the sliding grinding piece to rotate, thereby stopping grinding. The length that the sliding grinding piece slides into the rotating sleeve is the sliding distance of the pre-adjustment slide disc, which is the grinding thickness during each grinding. Pre-adjustment can be used to accurately control the grinding thickness each time to avoid excessive grinding.

[0008] Furthermore, the adjustable mounting seat includes a fixed base, a rotating motor and a rotating base, the fixed base is arranged on the side wall of the longitudinal axis slide, the side wall of the fixed base is provided with a mounting groove, the rotating motor is arranged in the mounting groove, the rotating base is rotatably arranged on the side wall of the fixed base, the output shaft of the rotating motor is connected to the rotating base, the self-protection detection mechanism and the pre-adjustment grinding mechanism are arranged on the side wall of the rotating base, and the length from the self-protection detection mechanism to the output shaft of the rotating motor is equal to the length from the pre-adjustment grinding mechanism to the output shaft of the rotating motor.

[0009] The rotating base is driven to rotate by a rotating motor, thereby realizing the switching of the positions of the self-protection detection mechanism and the pre-adjustment grinding mechanism.

[0010] Wherein, the self-protection detection mechanism includes an electric telescopic detection rod, a detection support rod, a mounting base, a self-opening and closing protective cover and a detection probe. The electric telescopic detection rod is arranged on the side of the adjustable mounting base away from the back plate. The end of the electric telescopic detection rod is provided with a detection bracket. The detection support rod is arranged on the side wall of the detection bracket. The mounting base is arranged on the end of the detection support rod. The detection probe is arranged on the side wall of the mounting base. The detection probe is connected to the detection instrument through a wire. The self-opening and closing protective cover is symmetrically hinged on both sides of the mounting base. A torsion spring is arranged between the self-opening and closing protective cover and the mounting base. The torsion spring enables the self-opening and closing protective cover to remain in a closed state when there is no external force. The detection probe is arranged on the self-opening and closing Inside the protective cover, a buffer spring is provided on the outside of the detection probe, and the buffer spring is arranged in the self-opening and closing protective cover. An active pull ring, a tension spring and a driven pull ring are slidably sleeved in sequence on the detection support rod, and the two ends of the tension spring are respectively connected to the active pull ring and the driven pull ring, and the driven pull ring is arranged between the active pull ring and the mounting base. Pull ropes are symmetrically provided on the side wall of the driven pull ring, and two symmetrical groups of pull ropes are respectively connected to the self-opening and closing protective cover. An active pull rope is provided on the side of the active pull ring away from the driven pull ring, a rope hole is penetrated through the detection bracket, and a rope threading channel with openings at both ends is provided on the side wall of the detection electric telescopic rod, and the active pull rope is connected to the fixed base after sliding through the rope hole and the rope threading channel.

[0011] Initially, the torsion spring keeps the self-opening and closing protective cover in a closed state to prevent grinding debris from adhering to the detection probe and affecting the detection results. When grinding is completed and detection is required, the rotating motor is driven to drive the rotating base to rotate, and the positions of the self-protection detection mechanism and the pre-adjustment grinding mechanism are swapped. At this time, the self-protection detection mechanism is aligned with the lightning rod, and the rotating base drives the detection electric telescopic rod to rotate. Since one end of the active pull rope is fixed on the side wall of the fixed base, the active pull rope is wrapped around the detection electric telescopic rod, and the active pull rope pulls the active pull ring to slide toward the installation base. The active pull ring drives the driven pull ring to slide toward the installation base through the tension spring, and the driven pull ring pulls the self-opening and closing protective cover outward through two sets of pull ropes to rotate and open, thereby exposing the detection probe, and then the detection electric telescopic rod is controlled to extend to drive the detection probe to fit the lightning rod for detection. The buffer spring plays a buffering role.

[0012] Preferably, the ash suction mechanism includes an elastic cleaning column, an air suction pump, an ash filter bag and an ash suction ring. The elastic cleaning column is arranged on the side wall of the grinding bracket, and the elastic cleaning columns are distributed in a circular array around the rotating hole. A fixing ring is provided at the end of the elastic cleaning column, and the ash suction ring is coaxially fixed to the side wall of the fixing ring. The coaxial sleeve of the ash suction ring is arranged on the outside of the sliding grinding part. The end surface of the ash suction ring away from the grinding drive side is provided with an annular ash suction cavity, and the outer coaxial sleeve of the ash suction ring is provided with a cleaning sponge sleeve. The air suction pump is arranged on the grinding bracket, and the ash collecting filter bag is arranged on the bottom wall of the grinding bracket. An air suction hose is provided between the input end of the air suction pump and the annular ash suction cavity, and an exhaust pipe is provided between the air suction pump and the ash collecting filter bag.

[0013] The elastic cleaning column makes the ash absorption ring always keep in contact with the fan blades. When the adjustable mounting seat drives the self-protection detection mechanism and the pre-adjusted grinding mechanism to rotate, the ash absorption ring rotates over the surface of the lightning rod. The vacuum pump generates negative pressure in the annular ash absorption chamber through the vacuum hose, thereby sucking away the grinding debris remaining on the surface of the lightning rod and discharging it into the ash collecting filter bag through the exhaust pipe. The cleaning sponge sleeve flexibly wipes the surface of the lightning rod to ensure the cleanliness of the surface of the lightning rod.

[0014] Furthermore, the grinding drive includes a grinding electric telescopic rod, a grinding bracket and a grinding motor. The grinding electric telescopic rod is arranged on a side of the adjustable mounting seat away from the back plate, the grinding bracket is arranged at the end of the grinding electric telescopic rod, the grinding motor is arranged in the grinding bracket, and a rotating hole is penetrated by the end of the grinding bracket away from the grinding electric telescopic rod, the rotating sleeve is rotatably installed in the rotating hole, the grinding motor is coaxially fixed with the rotating sleeve, the grinding electric telescopic rod adjusts the distance from the sliding grinding part to the lightning arrester, and the grinding motor drives the sliding grinding part to rotate through the rotating sleeve to grind the lightning arrester.

[0015] Furthermore, the sliding grinding part includes a grinding mounting seat, a mounting shaft and a grinding part body. The grinding mounting seat is coaxially fixed to the side wall of the pre-adjusting sliding disk through a retaining ring. The side wall of the grinding mounting seat is provided with a mounting hole. The mounting shaft is fixedly installed in the mounting hole by bolts, and the grinding part body is arranged at the end of the mounting shaft.

[0016] Preferably, the inner wall of the rotating sleeve is provided with a rotating slide groove distributed along the axial direction, and the rotating slide groove is arranged in a circular array around the axis of the rotating sleeve. The side wall of the pre-adjustment slide plate is evenly distributed along the circumference with a pre-adjustment slider, and the pre-adjustment slider is slidably clamped in the rotating slide groove. The rotating sleeve and the pre-adjustment slide plate keep synchronous rotation through the rotating slide groove and the pre-adjustment slider, thereby ensuring that the rotating sleeve and the pre-adjustment slide plate are circumferentially fixed.

[0017] Preferably, an installation groove is provided on the inner wall of the rotating sleeve, and the rotating groove and the installation groove are arranged in parallel. The installation groove is arranged in a circular array around the axis of the rotating sleeve, and the rotating groove and the installation groove are distributed at intervals along the circumferential direction of the inner wall of the rotating sleeve. An annular groove is provided on the end of the inner wall of the rotating sleeve away from the retaining ring, and the rotating groove and the installation groove are respectively connected to the annular groove, and the retaining ring is provided with installation sliding holes corresponding to the installation grooves one by one.

[0018] The mounting groove, annular groove and mounting sliding hole facilitate the removal of the pre-adjusting slide plate from the rotating sleeve. The pre-adjusting slide plate is pushed toward the annular groove through the sliding grinding piece to overcome the elastic force of the pre-adjusting spring. When the pre-adjusting slider slides into the annular groove, the rotating sliding grinding piece drives the pre-adjusting slide plate to rotate. When the pre-adjusting slider is aligned with the mounting groove, the pre-adjusting spring pushes the pre-adjusting slide plate to drive the pre-adjusting slider to slide along the mounting groove and the mounting sliding hole and extend out of the rotating sleeve.

[0019] Preferably, an electric slip ring is provided between the polishing bracket and the rotating sleeve, and the electric slip ring is electrically connected to the pressure sensor and the displacement sensor respectively.

[0020] Among them, the electrical control box is equipped with a controller and a wireless communication module, the pressure sensor and the displacement sensor are electrically connected to the controller through an electric slip ring, the controller and the camera are electrically connected to the wireless communication module respectively, the camera sends the video to the mobile terminal in real time through the wireless communication module, and the controller transmits the detection data of the displacement sensor to the mobile terminal through the wireless communication module, so that the staff can accurately control the grinding thickness.

[0021] As a further improvement of the present solution, the electric control box is provided with a control component, and the control component includes a paired receiver and a remote controller. The receiver is arranged in the electric control box, and the receiver is electrically connected to the electric control box, and the electric control box can be controlled by the remote controller.

[0022] Preferably, the elastic cleaning column comprises a sliding sleeve, a sliding shaft and a cleaning spring, the sliding shaft is slidably arranged in the sliding sleeve, and the cleaning spring is arranged between the sliding sleeve and the sliding shaft.

[0023] Preferably, the transverse axis slide and the longitudinal axis slide are electric slides.

[0024] Preferably, the camera is arranged on the detection bracket, the side wall of the detection bracket is provided with an air pump, the detection bracket is provided with an air pipe, the air pump is connected to the air pipe, the end of the air pipe is provided with a soot blowing nozzle, and the input end of the air pump is provided with a filter element.

[0025] When there is floating dust on the camera surface, start the air pump, which inhales the filtered clean gas through the filter element and blows it to the camera surface through the air pipe and the dust blowing nozzle, so as to blow away the floating dust on the camera surface.

[0026] The beneficial effects achieved by the present invention using the above structure are as follows: 1. The device is fixed on the outside of the crane's hanging basket through a hanging fixed lock. The overall operation is simple and convenient, and the cost is relatively low. It is easy to use, has high stability, and is easier to operate.

[0027] 2. A pre-adjusting grinding mechanism is set up, and the sliding distance of the pre-adjusting sliding plate is accurately controlled through the displacement sensor. The length of the sliding grinding part sliding into the rotating sleeve is the sliding distance of the pre-adjusting sliding plate, which is the grinding thickness during each grinding. Through pre-adjustment, the grinding thickness of each time can be accurately controlled to avoid excessive grinding.

[0028] 3. The torsion spring allows the self-opening and closing protective cover to remain in a closed state when there is no external force, thereby protecting the detection probe during grinding. When the adjustable mounting seat drives the self-protection detection mechanism and the pre-adjustment grinding mechanism to switch positions, the active pull rope pulls the active pull ring to slide toward the mounting base, and the active pull ring drives the driven pull ring to slide toward the mounting base through the tension spring. The driven pull ring pulls the self-opening and closing protective cover outward through two sets of pulling ropes to open, thereby automatically exposing the detection probe for detection, and the buffer spring plays a buffering role.

[0029] 4. The elastic cleaning column makes the ash suction ring always keep in contact with the fan blades. When the adjustable mounting seat drives the self-protection detection mechanism and the pre-adjusted grinding mechanism to rotate, the ash suction ring rotates over the surface of the lightning rod, and the vacuum pump generates negative pressure in the annular ash suction chamber through the vacuum hose, thereby sucking away the grinding debris remaining on the surface of the lightning rod and discharging it into the ash collection filter bag through the exhaust pipe. The cleaning sponge sleeve flexibly wipes the surface of the lightning rod to ensure the cleanliness of the surface of the lightning rod.

[0030] 5. Through real-time detection by camera, combined with mobile terminal and remote control, the operator can remotely control the device to reduce the risk of detection.

[0031] 6. The air pump inhales the filtered clean gas through the filter element and blows it to the surface of the camera through the air blowing pipe and the dust blowing nozzle, so as to blow away the dust on the surface of the camera and ensure the clarity of the surveillance video. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic structural diagram of a wind turbine blade lightning protection detection device provided by the present invention; Figure 2 A schematic diagram of the combined structure of the self-protection detection mechanism, the pre-adjustment grinding mechanism and the adjustable mounting seat provided by the present invention; Figure 3 A schematic diagram of the combined structure of the self-protection detection mechanism, the pre-adjustment grinding mechanism and the adjustable mounting seat provided by the present invention from another perspective; Figure 4 A cross-sectional view of the self-protective detection mechanism, pre-adjustable grinding mechanism and adjustable mounting seat provided by the present invention; Figure 5 A schematic diagram of the structure of the pre-adjustable grinding mechanism provided by the present invention without the grinding electric telescopic rod; Figure 6 A schematic structural diagram of the pre-adjustable grinding mechanism provided by the present invention, with the grinding electric telescopic rod removed, from another perspective; Figure 7 A cross-sectional view of the rotating sleeve, the pre-adjusting spring and the sliding grinding member provided by the present invention; Figure 8 An exploded view of the rotating sleeve, the pre-adjusting spring and the sliding grinding member provided by the present invention; Fig. 9 A cross-sectional view of the rotating sleeve provided by the present invention; Fig.10 A schematic diagram of the structure of the self-protection detection mechanism provided by the present invention for removing the detection electric telescopic rod; Fig.11 A schematic diagram of the combination of the mounting base, the self-opening and closing protective cover, the detection probe and the buffer spring provided by the present invention; Fig.12 A schematic diagram of the combined structure of the self-protection detection mechanism and the camera provided by the present invention; Fig.13 A schematic diagram of the combined structure of the self-protection detection mechanism and the camera from another viewing angle provided by the present invention; Fig.14 This is a schematic diagram of the combined structure of the dust suction mechanism and the grinding device provided by the present invention.

[0033] Among them, 1. back plate, 2. electric control box, 3. horizontal axis slide, 4. longitudinal axis slide, 5. self-protection detection mechanism, 6. pre-adjusted grinding mechanism, 7. suspension fixing lock, 8. adjustable mounting seat, 9. camera, 10. fixed base, 11. rotating motor, 12. rotating base, 13. grinding drive, 14. rotating sleeve, 15. pre-adjusted spring, 16. sliding grinding part, 17. retaining ring, 18. pre-adjusted sliding plate, 19. pressure sensor, 20. displacement sensor, 21. controller, 22. wireless communication module, 23. grinding electric telescopic rod, 24. grinding bracket, 25. grinding motor, 26. grinding mounting seat, 27. mounting shaft, 28. grinding part body, 29. rotating slide, 30. pre-adjusted slider, 31. installation Slide groove, 32. Annular slide groove, 33. Mounting slide hole, 34. Electric slip ring, 35. Detection electric telescopic rod, 36. Mounting base, 37. Self-opening and closing protective cover, 38. Detection probe, 39. Detection bracket, 40. Torsion spring, 41. Buffer spring, 42. Active pull ring, 43. Tension spring, 44. Driven pull ring, 45. Pull rope, 46. Active pull rope, 47. Rope threading channel, 48. Elastic cleaning column, 49. Vacuum pump, 50. Ash collection filter bag, 51. Ash suction ring, 52. Fixed ring, 53. Annular ash suction chamber, 54. Cleaning sponge sleeve, 55. Vacuum hose, 56. Exhaust pipe, 57. Receiver, 58. Air pump, 59. Air blowing pipe, 60. Ash blowing nozzle, 61. Filter element, 62. Ash suction mechanism, 63. Detection support rod.

[0034] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] like Figure 1-Figure 14As shown, a lightning protection detection device for wind turbine blades provided by the present invention includes a back plate 1, an electric control box 2, a transverse axis slide 3, a longitudinal axis slide 4, a self-protection detection mechanism 5 and a pre-adjustment grinding mechanism 6. A hanging fixed lock buckle 7 is provided on the top of the back plate 1 through a rope fixed connection. The transverse axis slide 3 is fixedly installed on the side wall of the back plate 1. The longitudinal axis slide 4 is arranged on the transverse axis slide 3. The longitudinal axis slide 4 is vertically arranged with the transverse axis slide 3. An adjustable mounting seat 8 is provided on the side wall of the longitudinal axis slide 4. The self-protection detection mechanism 5 and the pre-adjustment grinding mechanism 6 are arranged on the side of the adjustable mounting seat 8 away from the back plate 1. A camera 9 is installed at the end of the self-protection detection mechanism 5. The electric control box 2 is electrically connected to the transverse axis slide 3, the longitudinal axis slide 4, the self-protection detection mechanism 5, the pre-adjustment grinding mechanism 6 and the camera 9 respectively. A dust suction mechanism 62 is provided on the outside of the pre-adjustment grinding mechanism 6.

[0038] The adjustable mounting seat 8 includes a fixed base 10, a rotating motor 11 and a rotating base 12. The fixed base 10 is arranged on the side wall of the longitudinal axis slide 4. The side wall of the fixed base 10 is provided with a mounting groove. The rotating motor 11 is arranged in the mounting groove. The rotating base 12 is rotatably arranged on the side wall of the fixed base 10. The output shaft of the rotating motor 11 is connected to the rotating base 12. The self-protection detection mechanism 5 and the pre-adjustment grinding mechanism 6 are arranged on the side wall of the rotating base 12. The length from the self-protection detection mechanism 5 to the output shaft of the rotating motor 11 is equal to the length from the pre-adjustment grinding mechanism 6 to the output shaft of the rotating motor 11.

[0039] In this embodiment, the transverse axis slide 3 and the longitudinal axis slide 4 are electric slides.

[0040] The pre-adjusting grinding mechanism 6 includes a grinding drive 13, a rotating sleeve 14, a pre-adjusting spring 15 and a sliding grinding member 16. The grinding drive 13 is arranged on the side wall of the adjustable mounting seat 8. The rotating sleeve 14 is arranged at the end of the grinding drive 13. The rotating sleeve 14 is arranged at an end opening away from the grinding drive 13. A retaining ring 17 is coaxially fixedly provided on the opening side of the rotating sleeve 14. A pre-adjusting sliding disk 18 is coaxially slidably provided in the rotating sleeve 14. The rotating sleeve 14 and the pre-adjusting sliding disk 18 are arranged to slide coaxially. 8 is fixed circumferentially, one end of the sliding grinding member 16 passes through the retaining ring 17 and is arranged in the rotating sleeve 14 and is coaxially fixed with the pre-adjusting sliding disk 18, the pre-adjusting spring 15 is arranged between the pre-adjusting sliding disk 18 and the rotating sleeve 14, and the retaining ring 17 is provided with a pressure sensor 19 and a displacement sensor 20 on the side close to the pre-adjusting sliding disk 18, the displacement sensor 20 detects the sliding distance of the pre-adjusting sliding disk 18 in real time, and the pressure sensor 19 and the displacement sensor 20 are electrically connected to the electric control box 2 respectively.

[0041] The grinding drive 13 includes a grinding electric telescopic rod 23, a grinding bracket 24 and a grinding motor 25. The grinding electric telescopic rod 23 is arranged on the side of the adjustable mounting seat 8 away from the back plate 1, the grinding bracket 24 is arranged at the end of the grinding electric telescopic rod 23, the grinding motor 25 is arranged in the grinding bracket 24, and the end of the grinding bracket 24 away from the grinding electric telescopic rod 23 is penetrated by a rotating hole, the rotating sleeve 14 is rotatably installed in the rotating hole, the grinding motor 25 is coaxially fixed with the rotating sleeve 14, the grinding electric telescopic rod 23 adjusts the distance from the sliding grinding part 16 to the lightning arrester, and the grinding motor 25 drives the sliding grinding part 16 to rotate through the rotating sleeve 14 to grind the lightning arrester.

[0042] In this embodiment, an electric slip ring 34 is provided between the polishing bracket 24 and the rotating sleeve 14 , and the electric slip ring 34 is electrically connected to the pressure sensor 19 and the displacement sensor 20 , respectively.

[0043] A controller 21 and a wireless communication module 22 are provided in the electric control box 2. The pressure sensor 19 and the displacement sensor 20 are electrically connected to the controller 21 through an electric slip ring 34. The controller 21 and the camera 9 are electrically connected to the wireless communication module 22 respectively. The camera 9 sends the video to the mobile terminal in real time through the wireless communication module 22. The controller 21 transmits the detection data of the displacement sensor 20 to the mobile terminal through the wireless communication module 22, so that the staff can accurately control the grinding thickness. In this embodiment, the wireless communication module 22 can adopt a 5G communication module, which can provide high-speed and stable video transmission services, and is suitable for field application scenarios with high requirements on video quality and real-time performance. The mobile terminal is a mobile phone, the pressure sensor 19 adopts an MPX4250 pressure sensor, the displacement sensor 20 adopts a laser displacement sensor, and the controller 21 adopts a 51 single-chip microcomputer.

[0044] The sliding grinding member 16 includes a grinding mounting seat 26, a mounting shaft 27 and a grinding member body 28. The grinding mounting seat 26 passes through the retaining ring 17 and is coaxially fixed to the side wall of the pre-adjusting sliding disk 18. The side wall of the grinding mounting seat 26 is provided with a mounting hole. The mounting shaft 27 is fixed in the mounting hole by bolts. The grinding member body 28 is arranged at the end of the mounting shaft 27.

[0045] The inner wall of the rotating sleeve 14 is provided with a rotating groove 29 distributed along the axial direction, and the rotating groove 29 is arranged in a circular array around the axis of the rotating sleeve 14. The side wall of the pre-adjusting slide plate 18 is evenly distributed along the circumference with a pre-adjusting slider 30, and the pre-adjusting slider 30 is slidably clamped in the rotating groove 29. The rotating sleeve 14 and the pre-adjusting slide plate 18 maintain synchronous rotation through the rotating groove 29 and the pre-adjusting slider 30, thereby ensuring that the rotating sleeve 14 and the pre-adjusting slide plate 18 are circumferentially fixed.

[0046] The inner wall of the rotating sleeve 14 is provided with an installation groove 31, the rotating groove 29 and the installation groove 31 are arranged in parallel, and the installation groove 31 is arranged in a circular array around the axis of the rotating sleeve 14. The rotating groove 29 and the installation groove 31 are distributed at intervals along the circumference of the inner wall of the rotating sleeve 14. An annular groove 32 is provided at one end of the inner wall of the rotating sleeve 14 away from the retaining ring 17. The rotating groove 29 and the installation groove 31 are respectively connected to the annular groove 32, and the retaining ring 17 is provided with installation sliding holes 33 corresponding to the installation grooves 31 one by one.

[0047] The mounting groove 31, the annular groove 32 and the mounting sliding hole 33 facilitate the removal of the pre-adjusting slide plate 18 from the rotating sleeve 14. The pre-adjusting slide plate 18 is pushed toward the annular groove 32 through the sliding grinding piece 16 to overcome the elastic force of the pre-adjusting spring 15. When the pre-adjusting slider 30 slides into the annular groove 32, the rotating sliding grinding piece 16 drives the pre-adjusting slide plate 18 to rotate. When the pre-adjusting slider 30 is aligned with the mounting groove 31, the pre-adjusting spring 15 pushes the pre-adjusting slide plate 18 to drive the pre-adjusting slider 30 to slide along the mounting groove 31 and the mounting sliding hole 33 and extend out of the rotating sleeve 14.

[0048] The self-protection detection mechanism 5 includes an electric telescopic detection rod 35, a detection support rod 63, a mounting base 36, a self-opening and closing protective cover 37 and a detection probe 38. The electric telescopic detection rod 35 is arranged on the side of the adjustable mounting base 8 away from the back plate 1. The end of the electric telescopic detection rod 35 is provided with a detection bracket 39. The detection support rod 63 is arranged on the side wall of the detection bracket 39. The mounting base 36 is arranged at the end of the detection support rod 63. The detection probe 38 is arranged on the side wall of the mounting base 36. The detection probe 38 is connected to the detection instrument through a wire. In this embodiment, the detection instrument is a ground resistance tester. The self-opening and closing protective cover 37 is symmetrically hinged on both sides of the mounting base 36. A torsion spring 40 is provided between the self-opening and closing protective cover 37 and the mounting base 36. The torsion spring 40 keeps the self-opening and closing protective cover 37 in a closed state when there is no external force. The detection probe 38 It is arranged in the self-opening and closing protective cover 37, and a buffer spring 41 is arranged on the outside of the detection probe 38, and the buffer spring 41 is arranged in the self-opening and closing protective cover 37. An active pull ring 42, a tension spring 43 and a driven pull ring 44 are slidably sleeved in sequence on the detection support rod 63, and the two ends of the tension spring 43 are respectively connected to the active pull ring 42 and the driven pull ring 44, and the driven pull ring 44 is arranged between the active pull ring 42 and the mounting base 36. The side wall of the driven pull ring 44 is symmetrically provided with a pulling rope 45, and two symmetrical groups of pulling ropes 45 are respectively connected to the self-opening and closing protective cover 37, and an active pull rope 46 is arranged on the side of the active pull ring 42 away from the driven pull ring 44. A rope hole is penetrated through the detection bracket 39, and a rope threading channel 47 with openings at both ends is provided on the side wall of the detection electric telescopic rod 35, and the active pull rope 46 is connected to the fixed base 10 after sliding through the rope hole and the rope threading channel 47.

[0049] Initially, the torsion spring 40 keeps the self-opening and closing protective cover 37 in a closed state to prevent grinding debris from adhering to the detection probe 38 and affecting the detection result. When grinding is completed and detection is required, the rotating motor 11 is driven to drive the rotating base 12 to rotate, and the positions of the self-protection detection mechanism 5 and the pre-adjustment grinding mechanism 6 are exchanged. At this time, the self-protection detection mechanism 5 is aligned with the lightning arrester, and the rotating base 12 drives the detection electric telescopic rod 35 to rotate. Since one end of the active pull rope 46 is fixed to the side wall of the fixed base 10, the active pull rope 46 is The active pull rope 46 is wound around the detection electric telescopic rod 35, and the active pull rope 46 pulls the active pull ring 42 to slide toward the mounting base 36. The active pull ring 42 drives the driven pull ring 44 to slide toward the mounting base 36 through the tension spring 43. The driven pull ring 44 pulls the self-opening and closing protective cover 37 to rotate outward through two sets of pulling ropes 45, thereby exposing the detection probe 38, and then the detection electric telescopic rod 35 is controlled to extend to drive the detection probe 38 to fit with the lightning arrester for detection. The buffer spring 41 plays a buffering role.

[0050] The ash suction mechanism 62 includes an elastic ash cleaning column 48, an air pump 49, an ash collection filter bag 50 and an ash suction ring 51. The elastic ash cleaning column 48 is arranged on the side wall of the grinding bracket 24. The elastic ash cleaning column 48 is distributed in an array around the circumference of the rotating hole. A fixing ring 52 is provided at the end of the elastic ash cleaning column 48. The ash suction ring 51 is coaxially fixed to the side wall of the fixing ring 52. The ash suction ring 51 is coaxially sleeved on the outer side of the sliding grinding member 16. The ash suction ring 51 is away from the grinding drive 13. An annular ash suction chamber 53 is provided on the end face of the ash suction ring 51, and a cleaning sponge sleeve 54 is provided on the outer coaxial sleeve of the ash suction ring 51. The vacuum pump 49 is arranged on the polishing bracket 24, and the ash collecting filter bag 50 is arranged on the bottom wall of the polishing bracket 24. An exhaust hose 55 is provided between the input end of the vacuum pump 49 and the annular ash suction chamber 53. The vacuum hose 55 is spirally wound on the outer side of the elastic cleaning column 48. An exhaust pipe 56 is provided between the vacuum pump 49 and the ash collecting filter bag 50.

[0051] The elastic cleaning column 48 allows the ash absorption ring 51 to always remain in contact with the fan blades. When the adjustable mounting seat 8 drives the self-protection detection mechanism 5 and the pre-adjusted grinding mechanism 6 to rotate, the ash absorption ring 51 rotates over the surface of the lightning rod, and the vacuum pump 49 generates negative pressure in the annular ash absorption chamber 53 through the vacuum hose 55, thereby sucking away the grinding debris remaining on the surface of the lightning rod and discharging it into the ash collection filter bag 50 through the exhaust pipe 56. The cleaning sponge sleeve 54 flexibly wipes the surface of the lightning rod to ensure the cleanliness of the surface of the lightning rod.

[0052] As an embodiment, the elastic cleaning column 48 includes a sliding sleeve, a sliding shaft and a cleaning spring. The sliding shaft is slidably arranged in the sliding sleeve, and the cleaning spring is arranged between the sliding sleeve and the sliding shaft.

[0053] The electric control box 2 is provided with a control component, which includes a paired receiver 57 and a remote control. The receiver 57 is arranged in the electric control box 2, and the receiver 57 is electrically connected to the electric control box 2. The electric control box 2 can be controlled by the remote control. The electric control box 2 is electrically connected to the horizontal axis slide 3, the vertical axis slide 4, the rotating motor 11, the polishing electric telescopic rod 23, the polishing motor 25, the detection electric telescopic rod 35, the vacuum pump 49, the blowing pump 58, and the camera 9.

[0054] The camera 9 is arranged on the detection bracket 39, the side wall of the detection bracket 39 is provided with an air pump 58, the detection bracket 39 is provided with an air blowing pipe 59, the air pump 58 is connected with the air blowing pipe 59, the end of the air blowing pipe 59 is provided with a soot blowing nozzle 60, and the input end of the air pump 58 is provided with a filter element 61.

[0055] When there is floating dust on the surface of the camera 9 , the air pump 58 is started. The air pump 58 sucks the filtered clean gas through the filter element 61 and blows it to the surface of the camera 9 through the air pipe 59 and the dust blowing nozzle 60, so as to blow away the floating dust on the surface of the camera 9 .

[0056] When in use, the device is installed on the outside of the hanging basket of the crane through the hanging fixed lock buckle 7, and then the electric control box 2 and the detection instrument are placed in the hanging basket to connect various wires. The camera 9 sends the video to the operator's mobile phone in real time through the wireless communication module 22. The crane driver sends the detection platform to an operable height. The operator uses the camera 9 to monitor the device in real time, and controls the horizontal axis slide 3 and the vertical axis slide 4 to drive the adjustable mounting seat 8 to move through the remote control. The adjustable mounting seat 8 drives the self-protection detection mechanism 5 and the pre-adjustment grinding mechanism 6 to move synchronously, so that the pre-adjustment grinding mechanism 6 reaches the front of the lightning rod to be detected. If the lightning rod is seriously oxidized or dirt is accumulated, it is necessary to grind the lightning rod, and control the extension of the grinding electric telescopic rod 23. The grinding electric telescopic rod 23 is extended to drive the grinding bracket 24, the rotating sleeve 14 and the sliding grinding piece 16 to approach the lightning receptor to be detected. Initially, the pre-adjusting spring 15 pushes the pre-adjusting sliding plate 18 to be close to the retaining ring 17. At this time, the pressure sensor 19 is pressurized to generate an electrical signal and send it to the electric control box 2. When the sliding grinding piece 16 fits the lightning receptor, as the rotating sleeve 14 continues to approach the lightning receptor, the sliding grinding piece 16 overcomes the elastic force of the pre-adjusting spring 15 and retracts into the rotating sleeve 14. The sliding grinding piece 16 drives the pre-adjusting sliding plate 18 to move away from the retaining ring 17. At this time, the output signal of the pressure sensor 19 is 0 or close to 0. At the same time, the displacement sensor 20 detects the distance from the pre-adjusting sliding plate 18 to the retaining ring 17 in real time and sends it to the controller 21. The controller 21 sends the displacement sensor The detection data of the device 20 is transmitted to the operator's mobile phone in real time through the wireless communication module 22, so that the operator can accurately control the sliding distance of the pre-adjusting sliding disk 18. The length of the sliding grinding piece 16 sliding into the rotating sleeve 14 is the sliding distance of the pre-adjusting sliding disk 18, which is the grinding thickness during each grinding. Pre-adjustment is performed to accurately control the grinding thickness each time to avoid excessive grinding. When the pre-adjusting sliding disk 18 moves to a suitable position, the grinding electric telescopic rod 23 is controlled to stop extending. At this time, the rotating sleeve 14 stops at the current position, and then the grinding motor 25 is started for grinding. When the pre-adjusting grinding mechanism 6 is located in front of the lightning arrester, the torsion spring 40 keeps the self-opening and closing protective cover 37 in a closed state to prevent grinding debris from adhering to the detection probe 38. Affects the detection result. As the oxide on the surface of the lightning receptor is polished off, the pre-adjusting spring 15 pushes the pre-adjusting sliding plate 18 to slide close to the retaining ring 17, thereby keeping the sliding polishing piece 16 always in contact with the lightning receptor. When the pre-adjusting sliding plate 18 slides to be in contact with the retaining ring 17 again, the pressure sensor 19 generates an electrical signal and controls the polishing drive 13 to stop driving the sliding polishing piece 16 to rotate, thereby stopping the polishing and accurately controlling the polishing thickness. The operator can polish the lightning receptor multiple times, and as the number of polishing increases, the sliding distance of the pre-adjusting sliding plate 18 gradually decreases, that is, the polishing thickness gradually decreases, so as to avoid excessive polishing of the lightning receptor. After each polishing, the rotating motor 11 is controlled by the remote control to drive the rotating base 12 to rotate and control the vacuum pump 49 to start.The pre-adjusted grinding mechanism 6 is rotated and offset from the front of the lightning receptor. When the pre-adjusted grinding mechanism 6 rotates, it drives the dust absorption ring 51 to rotate from the surface of the lightning receptor. The elastic dust cleaning column 48 makes the dust absorption ring 51 always keep in contact with the fan blade. The vacuum pump 49 generates negative pressure in the annular dust absorption chamber 53 through the vacuum hose 55, thereby sucking away the grinding debris remaining on the surface of the lightning receptor and discharging it into the dust collection filter bag 50 through the exhaust pipe 56. The dust cleaning sponge sleeve 54 flexibly wipes the surface of the lightning receptor to ensure the cleanliness of the surface of the lightning receptor. When the dust absorption mechanism 62 and the pre-adjusted grinding mechanism 6 are both rotated away from the front of the lightning receptor, the operator checks the status of the lightning receptor through the real-time video monitoring on the mobile phone to observe whether the oxide or scale is polished off. When the polishing is completed, the operator controls the polishing electric telescopic rod 23 to retract through the remote control and controls the rotating motor 11 to drive the rotating base 12 to rotate, so as to control the self-protection detection mechanism 5 and The position of the pre-adjusting grinding mechanism 6 is exchanged so that the self-protection detection mechanism 5 rotates to the front of the lightning receptor to be detected. When the rotating base 12 drives the detection electric telescopic rod 35 to rotate, since one end of the active pull rope 46 is fixed on the side wall of the fixed base 10, the active pull rope 46 is wound around the detection electric telescopic rod 35, and the active pull rope 46 pulls the active pull ring 42 to slide toward the installation base 36. The active pull ring 42 drives the driven pull ring 44 to slide toward the installation base 36 through the tension spring 43. The driven pull ring 44 pulls the self-opening and closing protective cover 37 to rotate outward through two sets of pulling ropes 45, thereby exposing the detection probe 38, and then the detection electric telescopic rod 35 is controlled to extend to drive the detection probe 38 to fit with the lightning receptor for detection. The buffer spring 41 plays a buffering role, so that the detection probe 38 is in stable contact with the lightning receptor to be detected, and the operator can complete the detection work through the detection instrument.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A lightning protection detection device for wind turbine blades, characterized in that: It includes a back plate, an electric control box, a transverse axis slide, a longitudinal axis slide, a self-protective detection mechanism and a pre-adjustment grinding mechanism. A hanging fixed lock is provided on the top of the back plate through a rope fixed connection. The transverse axis slide is fixedly installed on the side wall of the back plate. The longitudinal axis slide is arranged on the transverse axis slide. The longitudinal axis slide is vertically arranged with the transverse axis slide. The side wall of the longitudinal axis slide is provided with an adjustable mounting seat. The self-protective detection mechanism and the pre-adjustment grinding mechanism are arranged on the side of the adjustable mounting seat away from the back plate. A camera is installed at the end of the self-protective detection mechanism. The electric control box is electrically connected to the transverse axis slide, the longitudinal axis slide, the self-protective detection mechanism, the pre-adjustment grinding mechanism and the camera respectively. A dust suction mechanism is provided on the outside of the pre-adjustment grinding mechanism.

2. A wind turbine blade lightning protection detection device according to claim 1, characterized in that: The pre-adjustment grinding mechanism includes a grinding drive, a rotating sleeve, a pre-adjustment spring and a sliding grinding piece. The grinding drive is arranged on the side wall of the adjustable mounting seat, the rotating sleeve is arranged at the end of the grinding drive, the rotating sleeve is arranged at an opening at one end away from the grinding drive, a retaining ring is coaxially fixedly provided on the opening side of the rotating sleeve, a pre-adjustment sliding disk is coaxially slidingly provided in the rotating sleeve, the rotating sleeve and the pre-adjustment sliding disk are circumferentially fixed, one end of the sliding grinding piece passes through the retaining ring and is arranged in the rotating sleeve and coaxially fixedly connected to the pre-adjustment sliding disk, the pre-adjustment spring is arranged between the pre-adjustment sliding disk and the rotating sleeve, and a pressure sensor and a displacement sensor are provided on the side of the retaining ring close to the pre-adjustment sliding disk, the displacement sensor detects the sliding distance of the pre-adjustment sliding disk in real time, and the pressure sensor and the displacement sensor are electrically connected to the electric control box respectively.

3. A wind turbine blade lightning protection detection device according to claim 2, characterized in that: The adjustable mounting seat includes a fixed base, a rotating motor and a rotating base. The fixed base is arranged on the side wall of the longitudinal axis slide. The side wall of the fixed base is provided with a mounting groove. The rotating motor is arranged in the mounting groove. The rotating base is rotatably arranged on the side wall of the fixed base. The output shaft of the rotating motor is connected to the rotating base. The self-protection detection mechanism and the pre-adjustment grinding mechanism are arranged on the side wall of the rotating base. The length from the self-protection detection mechanism to the output shaft of the rotating motor is equal to the length from the pre-adjustment grinding mechanism to the output shaft of the rotating motor.

4. A wind turbine blade lightning protection detection device according to claim 3, characterized in that: The self-protection detection mechanism includes an electric telescopic detection rod, a detection support rod, a mounting base, a self-opening and closing protective cover and a detection probe. The electric telescopic detection rod is arranged on the side of the adjustable mounting base away from the back plate. The end of the electric telescopic detection rod is provided with a detection bracket. The detection support rod is arranged on the side wall of the detection bracket. The mounting base is arranged on the end of the detection support rod. The detection probe is arranged on the side wall of the mounting base. The detection probe is connected to the detection instrument through a wire. The self-opening and closing protective cover is symmetrically hinged on both sides of the mounting base. A torsion spring is arranged between the self-opening and closing protective cover and the mounting base. The detection probe is arranged in the self-opening and closing protective cover. The outer side of the detection probe A buffer spring is provided, and the buffer spring is arranged in a self-opening and closing protective cover. An active pull ring, a tension spring and a driven pull ring are slidably sleeved in sequence on the detection support rod, and the two ends of the tension spring are respectively connected to the active pull ring and the driven pull ring, and the driven pull ring is arranged between the active pull ring and the mounting base. Pull ropes are symmetrically provided on the side wall of the driven pull ring, and two symmetrical groups of pull ropes are respectively connected to the self-opening and closing protective cover. An active pull rope is provided on the side of the active pull ring away from the driven pull ring, a rope hole is penetrated through the detection bracket, and a rope threading channel with openings at both ends is provided on the side wall of the detection electric telescopic rod, and the active pull rope is connected to the fixed base after sliding through the rope hole and the rope threading channel.

5. A wind turbine blade lightning protection detection device according to claim 4, characterized in that: The ash suction mechanism includes an elastic cleaning column, an air suction pump, an ash filter bag and an ash suction ring. The elastic cleaning column is arranged on the side wall of the grinding bracket, and the elastic cleaning columns are distributed in a circular array around the mounting hole. A fixing ring is provided at the end of the elastic cleaning column. The ash suction ring is coaxially fixed to the side wall of the fixing ring. The coaxial sleeve of the ash suction ring is arranged on the outer side of the sliding grinding part. The end face of the ash suction ring away from the grinding drive side is provided with an annular ash suction cavity. The outer coaxial sleeve of the ash suction ring is provided with a cleaning sponge sleeve. The air suction pump is arranged on the grinding bracket, and the ash filter bag is arranged on the bottom wall of the grinding bracket. An air suction hose is connected between the input end of the air suction pump and the annular ash suction cavity, and an exhaust pipe is connected between the air suction pump and the ash filter bag.

6. A wind turbine blade lightning protection detection device according to claim 5, characterized in that: The grinding drive includes a grinding electric telescopic rod, a grinding bracket and a grinding motor. The grinding electric telescopic rod is arranged on a side of the adjustable mounting seat away from the back plate, the grinding bracket is arranged at the end of the grinding electric telescopic rod, the grinding motor is arranged in the grinding bracket, and an installation hole is penetrated at one end of the grinding bracket away from the grinding electric telescopic rod. The rotating sleeve is rotatably installed in the installation hole, the grinding motor is coaxially fixed with the rotating sleeve, and the sliding grinding part includes a grinding mounting seat, a mounting shaft and a grinding part body. The grinding mounting seat is coaxially fixed to the side wall of the pre-adjusting sliding disk through a retaining ring, and the side wall of the grinding mounting seat is provided with a mounting hole. The mounting shaft is fixedly installed in the mounting hole by bolts, and the grinding part body is arranged at the end of the mounting shaft.

7. A wind turbine blade lightning protection detection device according to claim 6, characterized in that: The inner wall of the rotating sleeve is provided with rotating grooves distributed along the axial direction, and the rotating grooves are arranged in a circular array around the axis of the rotating sleeve. The side wall of the pre-adjusting sliding plate is evenly distributed along the circumference with pre-adjusting sliders, and the pre-adjusting sliders are slidably clamped in the rotating grooves.

8. A wind turbine blade lightning protection detection device according to claim 7, characterized in that: The inner wall of the rotating sleeve is provided with an installation slide groove, the rotating slide groove and the installation slide groove are arranged in parallel, the installation slide groove is arranged in a circular array around the axis of the rotating sleeve, the rotating slide groove and the installation slide groove are distributed at intervals along the circumferential direction of the inner wall of the rotating sleeve, an annular slide groove is provided at one end of the inner wall of the rotating sleeve away from the retaining ring, the rotating slide groove and the installation slide groove are respectively connected with the annular slide groove, and the retaining ring is provided with installation slide holes corresponding to the installation slide grooves one by one.

9. A wind turbine blade lightning protection detection device according to claim 8, characterized in that: An electric slip ring is provided between the polishing bracket and the rotating sleeve, and the electric slip ring is electrically connected to the pressure sensor and the displacement sensor respectively. A controller and a wireless communication module are provided in the electric control box, and the pressure sensor and the displacement sensor are electrically connected to the controller through the electric slip ring. The controller and the camera are electrically connected to the wireless communication module respectively. The camera sends the video to the mobile terminal in real time through the wireless communication module, and the controller transmits the detection data of the displacement sensor to the mobile terminal through the wireless communication module.

10. A wind turbine blade lightning protection detection device according to claim 9, characterized in that: The camera is arranged on the detection bracket, a blow pump is arranged on the side wall of the detection bracket, a blow pipe is arranged on the detection bracket, the blow pump is connected with the blow pipe, a soot blowing nozzle is arranged at the end of the blow pipe, and a filter element is arranged at the input end of the blow pump.

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