Wind power flange edge hole coping device

Abstract

The invention relates to the technical field of grinding equipment, in particular to a wind power flange edge hole grinding device which comprises a base, a plurality of stand columns are fixed to the top of the base, a supporting disc is fixed to the tops of the stand columns, a positioning mechanism is arranged at the top of the supporting disc and used for positioning a flange, and a plurality of spherical grooves are formed in the supporting disc. Balls are slidably connected to the interiors of the spherical groove bodies, the balls protrude out of the upper surface of the supporting disc, the balls are connected with locking mechanisms, and after the flange is positioned, the locking mechanisms are used for fixing the balls; the innovative design of the balls and the locking mechanism is adopted, the spherical grooves formed in the supporting disc are matched with the balls, low-friction flexible supporting is achieved in the positioning stage, the positioning efficiency is greatly improved, meanwhile, direct contact between the wind power flange and the supporting disc can be avoided, damage to the wind power flange due to the friction effect can be avoided, and the service life of the wind power flange is prolonged. And the flange reference surface precision is protected.

Description

Technical Field

[0001] This invention relates to the field of grinding equipment technology, specifically a device for grinding the edge holes of a wind turbine flange. Background Technology

[0002] The wind turbine flange edge hole grinding device is a professional equipment for precision machining of bolt holes on the edges of large annular workpieces. Its core function is to efficiently and accurately complete hole wall grinding, burr removal and chamfering. The device usually adopts a modular design, integrating a high-rigidity grinding spindle, a multi-axis linkage positioning system and an intelligent control unit, and can adapt to the processing needs of flanges of different specifications with diameters of 1-10 meters.

[0003] Existing wind turbine flange grinding devices have significant technical shortcomings in the positioning and support stage: when traditional rigid clamps position wind turbine flanges, relative displacement occurs between the wind turbine flange and the support mechanism, resulting in significant friction between them. This reduces the positioning efficiency of the wind turbine flange and can easily damage the reference surface of the wind turbine flange, thereby reducing the accuracy of the reference surface. Summary of the Invention

[0004] The purpose of this invention is to provide a device for grinding the edge holes of a wind turbine flange to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A device for grinding the edge holes of a wind turbine flange includes a base, with multiple columns fixed to the top of the base. A support plate is fixed to the top of the columns, and a positioning mechanism is provided on the top of the support plate for positioning the flange. The support plate has multiple spherical grooves inside, each with a ball bearing slidably connected inside. The ball bearings protrude from the upper surface of the support plate and are connected to a locking mechanism. After the flange is positioned, the locking mechanism is used to fix the ball bearings. A hydraulic cylinder is fixed to the top of the base, and a support rod is connected to the telescopic end of the hydraulic cylinder. A fixed plate is fixed to the outside of the support rod, and an air blowing mechanism is connected to the fixed plate. When the hydraulic cylinder drives the support rod to move upward, the support rod sequentially drives the positioning mechanism and the locking mechanism to operate. When the support rod drives the fixed plate to move downward, the fixed plate drives the air blowing mechanism to clean the ground flange.

[0007] Preferably, the positioning mechanism includes multiple slides arranged circumferentially inside the support plate, each slide having a positioning rod slidably connected inside it. The upper end of the positioning rod extends above the support plate, and the positioning rod is connected to the inner wall of the slide through a first elastic element. A stop rod is fixed on the side wall of the positioning rod, and the stop rod passes through the slide and extends to the inner side of the support plate. The top of the stop rod is truncated cone-shaped.

[0008] Preferably, the locking mechanism includes a groove on the side wall of the spherical groove, a friction block is slidably connected inside the groove, the side of the friction block near the ball is adapted to the outer wall of the ball, and an air bladder is provided on the side of the friction block away from the ball. Multiple first air cylinders are fixed at the bottom of the support plate, a first air rod passes through the lower end of the first air cylinder, a stop plate is fixed at the bottom of the first air rod, and the stop plate is connected to the bottom of the first air cylinder through a second elastic element. The top of the first air cylinder is connected to a first air pipe, and the first air pipe communicates with the air bladder.

[0009] Preferably, the air blowing mechanism includes a rotating disk disposed outside the fixed disk, a rotating assembly is provided between the rotating disk and the fixed disk, the rotating assembly is used to drive the rotating disk to rotate, a plurality of air blowing pipes are fixed on the top of the rotating disk in a circular arrangement, an air cavity is provided inside the rotating disk, the air blowing pipes are connected to the air cavity, and an air inlet assembly is connected to the air cavity, the air inlet assembly is used to inflate the air cavity.

[0010] Preferably, the air intake assembly includes a plurality of second air cylinders that are fixedly connected to the top of the base and are distributed in a circular pattern. A second air rod passes through the top of the second air cylinder, and the top of the second air rod is fixedly connected to the fixed plate. Each of the second air cylinders is connected to a second air pipe, and the second air pipe communicates with the air chamber.

[0011] Preferably, the rotating assembly includes sliders fixed to the inner wall of the rotating disk and symmetrically distributed, and arc-shaped grooves symmetrically distributed and adapted to the sliders are provided on the side wall of the fixed disk. The sliders are located inside the arc-shaped grooves and are connected to the inner wall of the arc-shaped grooves through a third elastic element. The outer wall of the rotating disk is provided with a plurality of magnets circumferentially distributed, and the top of the base is fixed with magnetic columns circumferentially distributed and repelling the magnets.

[0012] Preferably, the third elastic element is a spring.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention adopts an innovative design of ball bearings and a locking mechanism. Through the spherical grooves set in the support plate and the ball bearings, low-friction flexible support is achieved during the positioning stage, which greatly improves the positioning efficiency. At the same time, it can also avoid direct contact between the wind turbine flange and the support plate, thus avoiding damage to the wind turbine flange caused by friction and protecting the accuracy of the flange reference surface. After the wind turbine flange is positioned, the ball bearings are fixed by the locking mechanism. After all the ball bearings are fixed simultaneously, a uniformly distributed multi-point support system is formed, realizing the transformation of the support system from "movable positioning" to "stable load bearing". This effectively eliminates the processing vibration caused by the small displacement of the support points, significantly enhances the system's anti-interference ability, and keeps the workpiece extremely stable during the processing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the grinding device in an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the connection structure between the fixed disk and the rotating disk in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the bottom structure of the fixed disk in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the bottom structure of the support plate in an embodiment of the present invention.

[0018] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0019] Figure 6 for Figure 3 Enlarged view of section B in the middle.

[0020] Figure 7 This is a cross-sectional view of the internal structure of the support disk in an embodiment of the present invention.

[0021] In the diagram: 1-Base; 2-Positioning mechanism; 21-Positioning rod; 22-Abutting rod; 23-First elastic element; 3-Locking mechanism; 31-Friction block; 32-Airbag; 33-First air pipe; 34-First air cylinder; 35-First air rod; 36-Second elastic element; 37-Abutting plate; 4-Blowing mechanism; 41-Rotating disk; 42-Blowing pipe; 43-Second air rod; 44-Second air pipe; 45-Second air cylinder; 46-Magnet; 47-Magnetic column; 48-Air chamber; 49-Slider; 410-Arc groove; 411-Third elastic element; 5-Ball bearing; 6-Supporting disk; 7-Support rod; 8-Hydraulic cylinder; 9-Fixing disk; 10-Column. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0023] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0024] In one embodiment, see Figure 1 , Figure 2 , Figure 3 and Figure 4A device for grinding the edge holes of a wind turbine flange includes a base 1. Multiple columns 10 are fixed to the top of the base 1, and a support plate 6 is fixed to the top of each column 10. A positioning mechanism 2 is provided on the top of the support plate 6 for positioning the flange. Multiple spherical grooves are provided inside the support plate 6, and ball bearings 5 ​​are slidably connected inside each groove. The ball bearings 5 ​​protrude from the upper surface of the support plate 6 and are connected to a locking mechanism 3. After the flange is positioned, the locking mechanism 3 secures the ball bearings 5. A hydraulic cylinder 8 is fixed to the top of the base 1, and a support rod 7 is connected to the telescopic end of the hydraulic cylinder 8. A fixing plate 9 is fixed to the outside of the support rod 7, and an air blowing mechanism 4 is connected to the fixing plate 9. When the hydraulic cylinder 8 drives the support rod 7 upward, the support rod 7 sequentially drives the positioning mechanism 2 and the locking mechanism 3. When the support rod 7 drives the fixing plate 9 downward, the fixing plate 9 drives the air blowing mechanism 4 to clean the ground flange.

[0025] In this embodiment, when grinding the edge holes of the wind turbine flange, the wind turbine flange is lifted to the top of the support plate 6 by an external hoisting device. Then, the hydraulic cylinder 8 is activated, which drives the support rod 7 to move upward. As the support rod 7 moves upward, it sequentially drives the positioning mechanism 2 and the locking mechanism 3 to operate. The positioning mechanism 2 positions the wind turbine flange, thereby facilitating the subsequent grinding of the edge holes of the wind turbine flange. The positioning mechanism 2 can only position wind turbine flanges of the same model. When positioning the wind turbine flange, the positioning mechanism 2 uses the ball bearings 5 ​​to provide movable support for the wind turbine flange, thereby reducing... The low friction between the wind turbine flange and the support plate 6 allows the positioning mechanism 2 to easily position the wind turbine flange, significantly improving positioning efficiency. It also prevents direct contact between the wind turbine flange and the support plate 6, avoiding damage caused by friction and protecting the flange's reference surface accuracy. After the wind turbine flange is positioned, the hydraulic cylinder 8 continues to drive the support rod 7 upwards. At this time, the support rod 7 drives the locking mechanism 3, which fixes the ball bearings 5, realizing the transition of the support system from "movable positioning" to "stable load-bearing." During the positioning phase, the ball bearings 5 ​​roll freely. This allows the workpiece to be quickly and without damage adjusted in position. When the locking mechanism 3 is activated, all the balls 5 are simultaneously fixed, forming a uniformly distributed multi-point support system. This effectively eliminates processing vibrations caused by minor displacements of the support points, significantly enhancing the system's anti-interference capability and ensuring the workpiece maintains extremely high stability during processing. After the balls 5 are fixed, the wind turbine flange can be re-grinded. This can be done manually using a grinding mechanism to re-grind the edge holes of the wind turbine flange, or by a multi-axis robot. Alternatively, an external rotating device can be used to rotate the base 1. The base 1 drives the wind turbine flange to rotate via the support plate 6, thereby improving the grinding efficiency of the edge hole of the wind turbine flange. After the edge hole of the wind turbine flange is ground, the hydraulic cylinder 8 drives the support rod 7 to move downward. While the support rod 7 moves downward, it first releases the locking mechanism 3 from fixing the ball 5, and then releases the positioning mechanism 2 from positioning the wind turbine flange. In addition, while the support rod 7 moves downward, it also drives the fixing plate 9 to move downward. While the fixing plate 9 moves downward, it blows air through the air blowing mechanism 4 to the edge hole of the wind turbine flange, thereby removing the grinding residue in the hole and ensuring the cleanliness of the edge hole of the wind turbine flange.

[0026] Please see Figure 5 The positioning mechanism 2 includes multiple slides arranged in a circular pattern inside the support plate 6. Each slide is slidably connected to a positioning rod 21. The upper end of the positioning rod 21 extends above the support plate 6. The positioning rod 21 is connected to the inner wall of the slide through a first elastic element 23. A stop rod 22 is fixed on the side wall of the positioning rod 21. The stop rod 22 passes through the slide and extends to the inner side of the support plate 6. The top of the support rod 7 is truncated cone.

[0027] When grinding the edge holes of the wind turbine flange, the wind turbine flange is lifted to the top of the support plate 6 using an external hoisting device. Then, the hydraulic cylinder 8 is activated, which drives the support rod 7 to move upward. As the support rod 7 moves upward, its frustum-shaped top presses against the abutment rod 22. The abutment rod 22 causes the positioning rods 21 to move away from each other. When the cylindrical sidewall of the support rod 7 contacts the end of the abutment rod 22, the positioning rod 21 is in close contact with the inner wall of the wind turbine flange. Even if the support rod 7 continues to move upward, the degree of pressure exerted by the support rod 7 on the abutment rod 22 will not change. At this time, the multiple positioning rods 21 distributed circumferentially... 1. It provides support for the wind turbine flange, serving two purposes: positioning to facilitate subsequent grinding of the flange's edge holes and fixing the flange to improve its stability during grinding. After the positioning rod 21 positions the wind turbine flange, as the support rod 7 continues to move upward, the locking mechanism 3 begins to fix the ball 5. The first elastic element 23 can be a spring. When the frustum-shaped top of the support rod 7 no longer presses against the abutment rod 22, the first elastic element 23 can reset the positioning rod 21.

[0028] Please see Figure 2 , Figure 4 and Figure 7 The locking mechanism 3 includes a groove on the side wall of the spherical groove, a friction block 31 is slidably connected inside the groove, the side of the friction block 31 near the ball 5 is adapted to the outer wall of the ball 5, and an air bag 32 is provided on the side of the friction block 31 away from the ball 5. A plurality of first air cylinders 34 are fixed at the bottom of the support plate 6. A first air rod 35 passes through the lower end of the first air cylinder 34. A stop plate 37 is fixed at the bottom of the first air rod 35. The stop plate 37 is connected to the bottom of the first air cylinder 34 through a second elastic member 36. A first air pipe 33 is connected to the top of the first air cylinder 34. The first air pipe 33 is connected to the air bag 32.

[0029] After the wind turbine flange is positioned, the hydraulic cylinder 8 continues to drive the support rod 7 upward. At this time, the support rod 7 compresses the abutment plate 37 through the fixed plate 9. The abutment plate 37 drives the first pneumatic rod 35 upward, which compresses the gas inside the first pneumatic cylinder 34. The gas inside the first pneumatic cylinder 34 enters the airbag 32 through the first air pipe 33. The airbag 32 expands and compresses the friction block 31, thereby making the friction block 31 tightly fit against the outer wall of the ball bearing 5. The friction block 31 restricts the rotation of the ball bearing 5. After all the ball bearings 5 ​​are synchronously fixed, a uniformly distributed multi-point support system is formed, realizing the support system from "movable positioning". The transition to a "stable bearing" state effectively eliminates processing vibrations caused by minor displacements of the support points, significantly enhancing the system's anti-interference capabilities and ensuring the workpiece maintains extremely high stability during processing. The second elastic element 36 can be a spring, which can reset the first pneumatic rod 35, allowing the gas inside the airbag 32 to flow back into the first pneumatic cylinder 34. In other words, this invention uses the airbag 32 to drive the friction block 31 to move horizontally, and converts the vertical driving force into a lateral clamping force on the ball 5 through pneumatic transmission, avoiding the problem of a large driving force lifting the ball 5 upwards and interfering with the positioned workpiece.

[0030] Please see Figure 2 , Figure 3 and Figure 6 The air blowing mechanism 4 includes a rotating disk 41 disposed outside the fixed disk 9. A rotating assembly is provided between the rotating disk 41 and the fixed disk 9. The rotating assembly is used to drive the rotating disk 41 to rotate. A plurality of air blowing pipes 42 distributed in a circle are fixed on the top of the rotating disk 41. An air chamber 48 is provided inside the rotating disk 41. The air blowing pipes 42 are connected to the air chamber 48. An air inlet assembly is connected to the air chamber 48. The air inlet assembly is used to inflate the air chamber 48.

[0031] After the edge hole of the wind turbine flange is ground, the hydraulic cylinder 8 drives the support rod 7 to move downward. At the same time, the support rod 7 drives the fixed plate 9 to move downward. As the fixed plate 9 moves downward, air is injected into the air chamber 48 through the air intake assembly. The gas enters the air blowing pipe 42 through the air chamber 48 and finally exits from the top of the air blowing pipe 42 and acts on the inner wall of the edge hole of the wind turbine flange, thereby removing the grinding residue in the hole and ensuring the cleanliness of the edge hole of the wind turbine flange. The diameter of the support plate 6 should be smaller than the diameter of the wind turbine flange, so that the edge hole of the wind turbine flange is outside the support plate 6. The distance from the air blowing pipe 42 to the edge hole of the wind turbine flange and the center point of the wind turbine flange should be the same. In addition, when the rotating plate 41 moves downward, the rotating assembly will also drive the rotating plate 41 to rotate, so that the air blowing pipe 42 can pass under the edge hole of the wind turbine flange, avoiding the phenomenon that the edge hole of the wind turbine flange cannot be purged due to misalignment between the edge hole of the wind turbine flange and the air blowing pipe 42.

[0032] Please see Figure 3 The air intake assembly includes a plurality of second air cylinders 45 that are fixedly connected to the top of the base 1 and are distributed in a circular pattern. A second air rod 43 passes through the top of the second air cylinder 45. The top of the second air rod 43 is fixedly connected to the fixed plate 9. Each of the second air cylinders 45 is connected to a second air pipe 44, and the second air pipe 44 communicates with the air chamber 48.

[0033] After the edge hole of the wind turbine flange is ground, the hydraulic cylinder 8 drives the support rod 7 to move downward. At the same time, the support rod 7 drives the fixed plate 9 to move downward. At the same time, the fixed plate 9 drives the second pneumatic rod 43 to move downward. As the second pneumatic rod 43 moves downward, it squeezes the gas inside the second pneumatic cylinder 45. The gas inside the second pneumatic cylinder 45 enters the air chamber 48 through the second air pipe 44. The gas enters the blowing pipe 42 through the air chamber 48 and finally exits from the top of the blowing pipe 42 and acts on the inner wall of the edge hole of the wind turbine flange, thereby removing the grinding residue in the hole and ensuring the cleanliness of the edge hole of the wind turbine flange.

[0034] Please see Figure 1 and Figure 6 The rotating assembly includes sliders 49 fixed on the inner wall of the rotating disk 41 and symmetrically distributed. The side wall of the fixed disk 9 is provided with arc-shaped grooves 410 symmetrically distributed and adapted to the sliders 49. The sliders 49 are located inside the arc-shaped grooves 410 and are connected to the inner wall of the arc-shaped grooves 410 through a third elastic member 411. The outer wall of the rotating disk 41 is provided with a plurality of magnets 46 circumferentially distributed. The top of the base 1 is fixed with magnetic columns 47 circumferentially distributed and repelling the magnets 46.

[0035] After the edge holes of the wind turbine flange are ground, the hydraulic cylinder 8 drives the support rod 7 to move downwards. Simultaneously, the support rod 7 moves the fixed plate 9 downwards. The fixed plate 9, through the cooperation of the slider 49 and the arc-shaped groove 410, drives the rotating plate 41 downwards. When the rotating plate 41 moves downwards to a certain position, the magnet 46 and the magnetic column 47 on the side wall of the rotating plate 41 repel each other, thus forcing the rotating plate 41 to rotate at a certain angle. That is, when the rotating plate 41 descends to a specific relative position between the magnet 46 and the magnetic column 47, the magnetic repulsion and the restoring force of the third elastic element 41 work together to cause the rotating plate 41 to produce a certain amplitude of reciprocating deflection and vibration. Combined with the multiple air-blowing pipes 42 evenly distributed around the circumference, this high-frequency micro-amplitude vibration causes the spray range of each air-blowing pipe 42 to no longer be a fixed point, but to expand into a small fan-shaped area. All the air-blowing... The fan-shaped spray areas of pipe 42 intertwine and jointly cover the entire annular area where flange holes may be opened. Therefore, regardless of the initial relative position of the flange hole and the air blowing pipe 42, there is no need to align them during installation. During the air blowing process, there will always be airflow that can effectively act on the hole, ensuring that all grinding residues in the hole are removed without dead angles. This completely avoids the cleaning failure problem caused by misalignment between the air blowing pipe 42 and the flange hole. When the fixed plate 9 drives the rotating plate 41 to move upward again, and the magnet 46 moves above the magnetic column 47, the magnet 46 and the magnetic column 47 do not repel each other. The rotating plate 41 automatically resets under the action of the third elastic element 411. The third elastic element 411 can be a spring. In order for the rotating plate 41 to rotate, after the rotating plate 41 is reset, the magnet 46 and the magnetic column 47 should be offset by a certain angle.

[0036] Working principle: When grinding the edge holes of the wind turbine flange, the wind turbine flange is lifted to the top of the support plate 6 by an external hoisting device. Then, the hydraulic cylinder 8 is activated, which drives the support rod 7 to move upward. As the support rod 7 moves upward, its frustum-shaped top presses against the abutment rod 22. The abutment rod 22 causes the positioning rods 21 to move away from each other until the positioning rods 21 are all tightly fitted against the inner wall of the wind turbine flange. At this time, the multiple positioning rods 21 distributed around the circumference provide a supporting function for the wind turbine flange. This serves two purposes: firstly, it provides positioning, facilitating subsequent grinding of the edge holes of the wind turbine flange; secondly, it provides support for the wind turbine flange. This provides a fixing function, thereby improving the stability of the wind turbine flange during the grinding process. Furthermore, during the positioning of the wind turbine flange, the ball bearings 5 ​​provide movable support, reducing friction between the wind turbine flange and the support plate 6, significantly improving positioning efficiency. Simultaneously, it avoids direct contact between the wind turbine flange and the support plate 6, preventing damage to the wind turbine flange caused by friction and protecting the flange's reference surface accuracy. After the wind turbine flange is positioned, the hydraulic cylinder 8 continues to drive the support rod 7 upward. At this time, the support rod 7 presses against the abutment plate 37 through the fixed plate 9. The abutment plate 37 drives the first pneumatic rod 35 upward. 5. The gas inside the first air cylinder 34 is compressed, and the gas inside the first air cylinder 34 enters the air bag 32 through the first air pipe 33. The air bag 32 expands and compresses the friction block 31, thereby making the friction block 31 tightly fit against the outer wall of the ball 5. The friction block 31 restricts the rotation of the ball 5. After all the balls 5 are synchronously fixed, they form a uniformly distributed multi-point support system, realizing the transformation of the support system from "movable positioning" to "stable load bearing". This effectively eliminates the processing vibration caused by the small displacement of the support points, significantly enhances the system's anti-interference ability, and enables the workpiece to maintain extremely high stability during processing. When the wind power flange After the edge hole is ground, the hydraulic cylinder 8 drives the support rod 7 to move downward. At the same time, the support rod 7 moves downward, driving the fixed plate 9 to move downward. At the same time, the fixed plate 9 moves downward, driving the second pneumatic rod 43 to move downward. As the second pneumatic rod 43 moves downward, it compresses the gas inside the second pneumatic cylinder 45. The gas inside the second pneumatic cylinder 45 enters the air chamber 48 through the second air pipe 44. The gas enters the blowing pipe 42 through the air chamber 48 and finally exits from the top of the blowing pipe 42 and acts on the inner wall of the edge hole of the wind turbine flange, thereby removing the grinding residue in the hole and ensuring the cleanliness of the edge hole of the wind turbine flange.

[0037] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for grinding edge holes of a wind turbine flange, comprising a base; characterized in that, The base has multiple columns fixed to its top, and a support plate is fixed to the top of each column. The support plate has a positioning mechanism on its top for positioning the flange. The support plate has multiple spherical grooves inside, each with a ball bearing slidably connected inside. The ball bearings protrude from the upper surface of the support plate and are connected to a locking mechanism. After the flange is positioned, the locking mechanism is used to fix the ball bearings. A hydraulic cylinder is fixed to the top of the base, and a support rod is connected to the telescopic end of the hydraulic cylinder. A fixed plate is fixed to the outside of the support rod, and the fixed plate is connected to an air blowing mechanism. When the hydraulic cylinder drives the support rod to move upward, the support rod sequentially drives the positioning mechanism and the locking mechanism to operate. When the support rod drives the fixed plate to move downward, the fixed plate drives the air blowing mechanism to clean the polished flange.

2. The wind turbine flange edge hole grinding device according to claim 1, characterized in that, The positioning mechanism includes multiple slides arranged circumferentially inside the support plate. Each slide is slidably connected to a positioning rod, the upper end of which extends above the support plate. The positioning rod is connected to the inner wall of the slide through a first elastic element. A stop rod is fixed on the side wall of the positioning rod, the stop rod passes through the slide and extends to the inner side of the support plate, and the top of the stop rod is shaped like a frustum.

3. The wind turbine flange edge hole grinding device according to claim 1, characterized in that, The locking mechanism includes a groove on the side wall of the spherical groove, a friction block is slidably connected inside the groove, the side of the friction block near the ball is adapted to the outer wall of the ball, and an air bladder is provided on the side of the friction block away from the ball. A plurality of first air cylinders are fixed at the bottom of the support plate, a first air rod passes through the lower end of the first air cylinder, a stop plate is fixed at the bottom of the first air rod, and the stop plate is connected to the bottom of the first air cylinder through a second elastic element. A first air pipe is connected to the top of the first air cylinder, and the first air pipe communicates with the air bladder.

4. The wind turbine flange edge hole grinding device according to claim 1, characterized in that, The air blowing mechanism includes a rotating disk disposed on the outside of the fixed disk, a rotating assembly between the rotating disk and the fixed disk, the rotating assembly being used to drive the rotating disk to rotate, a plurality of air blowing pipes distributed in a circle being fixed on the top of the rotating disk, an air chamber being provided inside the rotating disk, the air blowing pipes being connected to the air chamber, wherein the air chamber is connected to an air inlet assembly, the air inlet assembly being used to inflate the air chamber.

5. The wind turbine flange edge hole grinding device according to claim 4, characterized in that, The air intake assembly includes a plurality of second air cylinders that are fixedly connected to the top of the base and are distributed in a circular pattern. A second air rod passes through the top of the second air cylinder, and the top of the second air rod is fixedly connected to the fixed plate. Each of the second air cylinders is connected to a second air pipe, and the second air pipe communicates with the air chamber.

6. The wind turbine flange edge hole grinding device according to claim 4, characterized in that, The rotating assembly includes sliders fixed to the inner wall of the rotating disk and symmetrically distributed. The side wall of the fixed disk is provided with arc-shaped grooves that are symmetrically distributed and adapted to the sliders. The sliders are located inside the arc-shaped grooves and are connected to the inner wall of the arc-shaped grooves through a third elastic element. The outer wall of the rotating disk is provided with a plurality of magnets that are circumferentially distributed. The top of the base is fixed with magnetic columns that are circumferentially distributed and repel the magnets.

7. A wind turbine flange edge hole grinding device according to claim 6, characterized in that, The third elastic element is a spring.

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