Drilling device and method for wind power tower connecting flange

Abstract

The invention relates to the technical field of wind power flange machining, in particular to a drilling device and method for a wind power tower connecting flange. A bearing table, a mold and a fastening deviation rectifying assembly are arranged, the bearing table is matched with the mold to support the wind power flange, and when the mold supports the wind power flange, the fastening deviation rectifying assembly is used for fixing the wind power flange; the center of the wind power flange and the center of the die are aligned through the fastening deviation rectifying assembly, in the alignment process, auxiliary fastening is automatically conducted on the upper end face of the wind power flange, in this way, the machining efficiency is improved, redundant operation is omitted, in the fastening process, the wind power flanges with different thicknesses can be fastened, and the applicability is improved; and the rotating punching assembly is used for conducting surrounding rotating punching, the positions of the wind power flange and the mold do not need to be adjusted, and compared with adjustment of a large-size wind power flange body and a large-size mold, the operation of adjusting the rotating punching assembly is more convenient and faster, and the efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power flange processing, and more specifically, it is a drilling device and method for a connecting flange of a wind power tower. Background Technique

[0002] The wind power flange is an important intermediate component connecting the wind turbine blade and the main shaft as well as the wind turbine tower. It is an important component in the field of wind power generation. It can transmit the rotation of the blade to the main shaft and bear the weight of the entire wind turbine on the wind turbine tower. The wind power flange generally consists of two parts, namely the flange plate and the flange gasket. The function of the flange plate is to connect the blade and the main shaft or the wind turbine tower, and it has high strength and stability. The flange gasket is placed on both sides of the flange plate, which can play a role in buffering, sealing and preventing loosening.

[0003] When producing the wind power flange, it is necessary to open hole grooves on the surface of the wind power flange, which is a necessary step to meet the requirements of bolt connection in the follow-up. Due to the importance of the flange in the wind turbine generator set, the accuracy of its drilling positioning is directly related to the performance and safety of the entire generator set. Therefore, the method and process of drilling positioning have become one of the key links in the production process of wind turbine generator sets.

[0004] For this reason, there are auxiliary drilling molds on the market. By placing the mold above the flange and drilling holes in the mold holes, the drilling accuracy of the flange is improved. For example, a mold disclosed in the patent publication number CN205129004U. However, there are disadvantages in using this method for drilling. First, the mold is placed on the upper end of the wind power flange and needs to be corrected to accurately align the mold with the wind power flange. And after the mold is aligned, it cannot be moved, otherwise it will affect the drilling accuracy, which increases the requirements for drilling processing. Second, debris will be generated during drilling. When the mold is placed on the upper end of the wind power flange for drilling, the debris will naturally fall into the mold holes, easily blocking the mold holes, which will cause wear to the holes by the debris and even affect the quality of the subsequent formed holes.

[0005] For this reason, we disclose a drilling device and method for a connecting flange of a wind power tower. Summary of the Invention

[0006] The purpose of the present invention is to provide a drilling device and method for a connecting flange of a wind power tower to solve the problems raised in the above background technique.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A drilling device for a connecting flange of a wind power tower includes a base and a bearing platform installed on the upper end of the base. A plurality of brackets are arranged on the upper end of the bearing platform. Between the tops of the plurality of brackets, there is a mold for supporting and positioning drilling of the flange. A plurality of mold holes are evenly distributed on the mold, and positioning holes are also opened on the outside of the mold corresponding to the mold holes; At the upper end of the bearing table inside the mold, a fastening and alignment component is also provided. The fastening and alignment component is used to align and position the flange while assisting in fastening. A rotating drilling component is also provided inside the bearing table. The rotating drilling component is used to rotate around the mold for drilling.

[0008] A further technical solution of the present application: The fastening and alignment component includes an alignment mechanism and a fastening mechanism. The alignment mechanism includes a screw groove opened at the center of the upper end face of the bearing table. At one end inside the screw groove, a first motor is provided. The power output shaft of the first motor is connected to one end of a first screw. The other end of the first screw is coaxially connected to a second screw. The first screw and the second screw have the same length and opposite outer threads. Both the first screw and the second screw are threadedly connected with screw sleeves. Above each screw sleeve, a connecting rod is connected. On the sides of the two connecting rods away from each other, mounting seats are provided. On the upper and lower end faces of each mounting seat, extension frames are connected. Between the ends of the extension frames, a fitting roller is rotatably connected. And the fitting roller moves with the connecting rod and finally fits against the inner side face of the flange.

[0009] A further technical solution of the present application: The fastening mechanism includes two telescopic members and a guiding member. Each telescopic member is connected to the top of the connecting rod. The tops of the two telescopic members are respectively in contact with both sides of the guiding member. And during the movement of the two telescopic members following the connecting rod, they are guided downward by the guiding member and finally fit against the upper end face and the inner side face of the flange. Each telescopic member includes a telescopic cylinder installed at the top of the connecting rod, a pulling spring connected to the bottom inside the telescopic cylinder at one end, and a pull rod connected to the other end of the pulling spring. The top of the pull rod is connected with an upper clamping plate. And one end of the upper clamping plate is in contact with the side face of the guiding member. Another fitting roller is also connected below the upper clamping plate. The height of the fitting roller connected below the upper clamping plate is higher than the upper end face of the mold. The guiding member includes a column installed at the center of the upper end of the bearing table and a cross beam connected to the top of the column. At both ends of the cross beam, two lower guiding blocks are symmetrically arranged. A connecting pin is connected between the two lower guiding blocks. A cavity is formed between the two lower guiding blocks. And the pull rod is placed in the cavity. On the upper end faces of the two lower guiding blocks, slopes are formed. And one end of the upper clamping plate is in contact with the outside of the slope.

[0010] A further technical solution of the present application: The rotating drilling component includes a rotating mechanism and a drilling mechanism. The rotating mechanism is arranged inside the bearing table. The drilling mechanism is connected to the outside of the rotating mechanism. The drilling mechanism is used to be positioned and connected to the lower end of the mold during the drilling process while drilling the upper end face of the flange. The rotating mechanism specifically includes a rotating cavity opened inside the bearing platform, a driving gear ring installed inside the rotating cavity, and several second motors arranged inside the rotating cavity. The power output shafts of the several second motors are all connected with driving gears, and the driving gears are meshed and connected to the inner side of the driving gear ring. A side block is also connected to the outer side of the driving gear ring, and the drilling mechanism is connected above the side block.

[0011] A further technical solution of the present application: A rolling groove is also circumferentially opened at the bottom inside the rotating cavity, and several rolling balls are arranged inside the rolling groove, and the several rolling balls are attached to the lower end surface of the driving gear ring.

[0012] A further technical solution of the present application: The drilling mechanism includes an adjusting frame connected to the side block, an adjusting cavity formed inside the adjusting frame, and a rotating gear installed at the central position of the adjusting cavity. First racks and second racks are symmetrically and slidably connected to both sides of the rotating gear inside the adjusting cavity. The sides of the first rack and the second rack are both meshed and connected to the rotating gear. Connecting plates are connected to the inner sides of the mutually remote ends of the first rack and the second rack; A cylinder is installed at the top of the adjusting frame, the lower end of the cylinder is connected to the connecting plate located above, and a positioning pin is connected to the side of the connecting plate located below, and the positioning pin is inserted into the positioning hole; A drilling machine is also connected to the side of the first rack, and the drilling machine is used for drilling the upper end surface of the flange.

[0013] A further technical solution of the present application: Stabilizing grooves are arranged on both sides inside the adjusting cavity, and several stabilizing blocks are arranged on both sides of the first rack and the second rack, and the stabilizing blocks are slidably connected to the inside of the stabilizing grooves in a matching manner.

[0014] A further technical solution of the present application: Moving grooves are also symmetrically arranged on both sides inside the screw groove, moving blocks are symmetrically arranged on both sides of the two screw sleeves, and the moving blocks are slidably connected to the inside of the moving grooves in a matching manner.

[0015] A further technical solution of the present application: Limit blocks are also symmetrically arranged at one end of the pull rod located inside the telescopic cylinder, and the limit blocks are slidably connected to the inside of the telescopic cylinder.

[0016] A method for a drilling device for a wind power tower connection flange, the method comprising the following steps: Step 1: Hoist the flange to be drilled and processed onto the mold, and then perform a deviation correction operation on the flange to be drilled and processed to assist the flange in aligning with the die hole on the mold; Step 2: Correct the deviation of the flange through the fastening deviation correction assembly, and simultaneously perform auxiliary clamping on the flange from the upper end surface of the flange during the deviation correction operation. After the clamping and deviation correction are completed, drilling processing is performed; Step 3: Drilling is performed by the rotating drilling component. The rotating drilling component rotates around the mold and drills holes in sequence. During a single drilling operation, the rotating drilling component performs auxiliary positioning from below the mold in advance and drills holes on the upper end face of the flange. After drilling is completed, the flange can be taken out.

[0017] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects: 1. By setting the bearing platform, the mold and the fastening and alignment component, the wind power flange is supported by the bearing platform in cooperation with the mold. When the mold supports the wind power flange, the wind power flange and the mold are centered and aligned through the fastening and alignment component, and during the alignment process, the upper end face of the wind power flange is automatically assisted in fastening, so as to improve the processing efficiency, eliminate redundant operations, and during this fastening process, wind power flanges of different thicknesses can be fastened, improving the applicability.

[0018] 2. By setting the rotating drilling component and the mold, the mold can provide drilling holes for the wind power flange, and the rotating drilling component rotates around to drill holes. There is no need to adjust the positions of the wind power flange and the mold. Compared with adjusting the large-volume wind power flange body and the mold, the operation of adjusting the rotating drilling component is more convenient and has higher efficiency. Moreover, during the drilling process, positioning and alignment are automatically performed to ensure the drilling accuracy. In addition, by adopting the drilling method of placing the wind power flange on the upper end face of the mold, the situation that debris blocks inside the mold holes can be effectively reduced, the cleaning of the mold holes can be eliminated, the damage to the inside of the formed holes caused by debris can be reduced, and the drilling efficiency and the quality of the formed holes are improved. Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the three-dimensional structural schematic diagram of the present invention; Figure 3 For the present invention Figure 2 is the enlarged structural schematic diagram at A in Figure 4 is the sectional structural schematic diagram of the present invention; Figure 5 For the present invention Figure 4 is the enlarged structural schematic diagram at B in Figure 6 is the sectional structural schematic diagram of the present invention; Figure 7 For the present invention Figure 6 is the enlarged structural schematic diagram at C in Figure 8 is the sectional structural schematic diagram of the present invention; Figure 9 For the present invention Figure 8 is the enlarged structural schematic diagram at D in Figure 10 This is a schematic cross-sectional view of the rotating cavity in the present invention.

[0020] Explanation of the reference numerals in the schematic diagram: 1. Base; 2. Carrier table; 3. First screw; 4. Second screw; 5. Column; 6. Bracket; 7. Mold; 8. Driving gear ring; 9. Cylinder; 10. Adjusting frame; 11. Adjusting cavity; 12. Screw groove; 13. Cross beam; 14. Connecting rod; 15. Telescopic cylinder; 16. Pull rod; 17. Lower guide block; 18. Connecting pin; 19. Upper clamping plate; 20. Extension frame; 21. Fitting roller; 22. Mounting seat; 23. First motor; 24. Moving block; 25. Nut sleeve; 26. Moving groove; 27. Limit block; 28. Pull-back spring; 29. Drilling machine; 30. Rotating gear; 31. Connecting plate; 32. Positioning pin; 33. Second rack; 34. Stable groove; 35. Stable block; 36. Positioning hole; 37. Die hole; 38. Side block; 39. Rotating cavity; 40. Second motor; 41. Ball; 42. Driving gear; 43. First rack. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a 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 those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. The present invention will be further described below in conjunction with the embodiments.

[0022] Please refer to Figures 1 to 10 , in an embodiment of the present application, a drilling device for a wind power tower connection flange includes a base 1 and a carrier table 2 installed at the upper end of the base 1. A plurality of brackets 6 are provided at the upper end of the carrier table 2, and a mold 7 for supporting and performing fixed-point drilling on the flange is connected between the tops of the plurality of brackets 6. A plurality of die holes 37 are evenly distributed on the mold 7, and positioning holes 36 are also provided outside the mold 7 corresponding to the die holes 37; A fastening and deviation correction assembly is further provided inside the carrier table 2 within the mold 7. The fastening and deviation correction assembly is used for deviation correction and positioning of the flange while performing auxiliary fastening; A rotating drilling assembly is also provided inside the carrier table 2. The rotating drilling assembly is used for rotating drilling around the mold 7.

[0023] This embodiment is implemented as follows: When drilling holes in the flange of a wind power tower, the traditional operation method of using a mold 7 for assisted drilling is to place the mold 7 on the upper end of the wind power flange. In this way, an additional step is required in the operation. First, the wind power flange needs to be hoisted, and then the mold 7 is placed above the wind power flange. Moreover, the debris generated during the drilling process will block the mold holes 37, which causes wear to the mold holes 37 and requires separate cleaning, resulting in inefficiency. At the same time, if the drilling machine 29 drills holes without aligning with the mold holes 37, it will cause damage to the mold 7 and the flange. In contrast, the present invention places the mold 7 below and the wind power flange above the mold 7. When the mold 7 bears the wind power flange, it remains stationary, and only the position of the wind power flange needs to be adjusted for alignment. The alignment operation is performed by a fastening and alignment component. The fastening and alignment component can support outward synchronously and finally contact two vertices on the inner side of the wind power flange. Since the fastening and alignment component is arranged at the center of the bearing platform 2 and is coaxially arranged with the mold 7, when both ends of the fastening and alignment component contact the inner side of the wind power flange synchronously, the wind power flange will naturally be at the coaxial center of the mold 7. During the alignment process, the fastening and alignment component will also assist in pressing the upper end face of the wind power flange for auxiliary fastening.

[0024] The drilling operation is realized by a rotating drilling component arranged in the bearing platform 2. The rotating drilling component can rotate around the mold 7 for drilling, without the need to rotate the wind power flange for drilling, which makes the operation more convenient. Moreover, the rotating drilling component can automatically align with the corresponding mold holes 37 during the drilling process. This is achieved by drilling from the upper end and positioning from the lower end. Only after the positioning at the lower end is successful can the upper end press down for drilling. This operation reduces misoperations and the damage of the mold 7. At the same time, the debris generated during drilling naturally falls and will not accumulate in the mold holes 37, improving the hole forming accuracy.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As a preferred embodiment of this application, the fastening and alignment component includes an alignment mechanism and a fastening mechanism. The alignment mechanism includes a screw groove 12 opened at the center of the upper end face of the bearing platform 2. One end inside the screw groove 12 is provided with a first motor 23. The power output shaft of the first motor 23 is connected to one end of a first screw 3. The other end of the first screw 3 is coaxially connected to a second screw 4. The first screw 3 and the second screw 4 have the same length and opposite outer threads. Both the outer sides of the first screw 3 and the second screw 4 are threadedly connected with screw sleeves 25. Above each screw sleeve 25 is connected with a connecting rod 14. On the sides of the two connecting rods 14 away from each other are provided with mounting seats 22. Both the upper and lower end faces of the mounting seats 22 are connected with extension frames 20. The ends of the extension frames 20 are rotatably connected with a fitting roller 21, and the fitting roller 21 moves with the connecting rod 14 and finally fits on the inner side of the flange.

[0026] Furthermore, the fastening mechanism includes two telescopic members and a guiding member. A single telescopic member is connected to the top end of the connecting rod 14. The top ends of the two telescopic members are respectively attached to both sides of the guiding member. And during the movement following the connecting rod 14, the two telescopic members are guided downward by the guiding member to displace, and finally are attached to the upper end face and the inner side face of the flange. A single telescopic member includes a telescopic cylinder 15 installed at the top end of the connecting rod 14, a pulling-back spring 28 with one end connected to the inner bottom of the telescopic cylinder 15, and a pull rod 16 connected to the other end of the pulling-back spring 28. The top end of the pull rod 16 is connected with an upper clamping plate 19. And one end of the upper clamping plate 19 is attached to the side face of the guiding member. Another attaching roller 21 is also connected below the upper clamping plate 19. The height of the attaching roller 21 connected below the upper clamping plate 19 is higher than the upper end face of the mold 7. The guiding member includes a column 5 installed at the center of the upper end of the bearing platform 2 and a cross beam 13 connected to the top end of the column 5. Two lower guiding blocks 17 are symmetrically arranged at both ends of the cross beam 13. A connecting pin 18 is connected between the two lower guiding blocks 17. A cavity is formed between the two lower guiding blocks 17. And the pull rod 16 is placed in the cavity. The upper end faces of the two lower guiding blocks 17 are formed with slopes, and one end of the upper clamping plate 19 is attached to the outside of the slope.

[0027] Furthermore, moving grooves 26 are symmetrically arranged on both inner sides of the screw groove 12. Moving blocks 24 are symmetrically arranged on both sides of the two screw sleeves 25. And the moving blocks 24 are slidably connected to the moving grooves 26 in a matching manner.

[0028] Furthermore, limiting blocks 27 are symmetrically arranged at one end of the pull rod 16 located inside the telescopic cylinder 15. And the limiting blocks 27 are slidably connected to the inside of the telescopic cylinder 15.

[0029] This embodiment is implemented as follows: As mentioned above, the function of the fastening and rectifying assembly is to assist in positioning during the rectifying process. Specifically, it is realized by the combination of the rectifying mechanism and the fastening mechanism. First, the rectifying mechanism performs the rectifying operation. The rectifying mechanism needs to be set at the center of the upper end of the bearing platform 2. And the mold 7 also needs to be coaxially arranged with the rectifying mechanism. In this embodiment, the rectifying mechanism adopts a first motor 23 to drive the first screw 3 and the second screw 4 to rotate synchronously. The thread directions on the outer sides of the two screws are opposite and the lengths are the same. This ensures that during the synchronous rotation of the two screws, the screw sleeves 25 on the outer sides of the two screws rotate in opposite directions. And moving blocks 24 are also arranged on the outer sides of the screw sleeves 25. By the sliding of the moving blocks 24 in cooperation with the moving grooves 26, the two screw sleeves 25 move in opposite directions. In this way, the two connecting rods 14 will be driven to move towards each other, realizing the displacement of the mounting seat 22 driving the extension frame 20 and the attaching roller 21.

[0030] When the mounting base 22 drives the extension frame 20 and the fitting roller 21 to displace, they will finally fit on the inner two vertices of the wind power flange. Since the deviation rectifying mechanism and the mold 7 are coaxially arranged, the wind power flange will naturally be corrected to a position coaxial with the mold 7. And during this process, the fastening mechanism will also displace in the same way.

[0031] During this displacement process of the fastening mechanism, it is necessary to synchronously fix the upper end face of the wind power flange. This requires the synchronous cooperation of the telescopic member and the guiding member to achieve. The two telescopic members follow the deviation rectifying mechanism to displace synchronously, come into contact with the guiding member, and the guiding member guides downward, causing the telescopic members to displace downward. Finally, the two telescopic members fit on both sides of the upper end face of the wind power flange to perform auxiliary fixation.

[0032] Specifically, the telescopic member is realized by the telescopic cylinder 15, the pulling-back spring 28 and the pull rod 16. The telescopic cylinder 15 will follow the connecting rod 14 to displace, and similarly, the pull rod 16 inside it will also displace. During the displacement of the pull rod 16, it will drive the upper clamping plate 19 at the top to displace. During the movement of the upper clamping plate 19, it will displace in contact with the guiding member. During the displacement process, the pulling-back spring 28 always pulls tightly the pull rod 16, moving the upper clamping plate 19 downward. The upper clamping plate 19 displaces downward through the slopes formed by the lower guiding blocks 17 on both sides of the guiding member and finally fits on both sides of the upper end face of the wind power flange. And due to the slope, this displacement is gradual from top to bottom, which ensures that the height of the upper clamping plate 19 slowly drops, and naturally it can fit on the upper end faces of wind power flanges with different thicknesses, thus realizing the fixation applicable to wind power flanges with different thicknesses.

[0033] Please refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , as a preferred embodiment of the present application, the rotating and punching assembly includes a rotating mechanism and a punching mechanism. The rotating mechanism is arranged inside the bearing table 2, and the punching mechanism is connected to the outside of the rotating mechanism. The punching mechanism is used to perform punching on the upper end face of the flange while being positioned and connected to the lower end of the mold 7 during the punching process; The rotating mechanism specifically includes a rotating cavity 39 opened inside the bearing table 2, a driving gear ring 8 installed inside the rotating cavity 39, and a number of second motors 40 arranged inside the rotating cavity 39. The power output shafts of the number of second motors 40 are all connected with driving gears 42, and the driving gears 42 are meshed and connected to the inner side of the driving gear ring 8. A side block 38 is also connected to the outside of the driving gear ring 8, and the punching mechanism is connected above the side block 38.

[0034] Furthermore, a rolling groove is also circumferentially formed at the inner bottom of the rotating cavity 39, and a number of rolling balls 41 are arranged in the rolling groove, and the number of rolling balls 41 is in contact with the lower end surface of the driving gear ring 8.

[0035] Furthermore, the punching mechanism includes an adjusting frame 10 connected to the side block 38, an adjusting cavity 11 formed inside the adjusting frame 10, and a rotating gear 30 installed at the central position of the adjusting cavity 11. First racks 43 and second racks 33 are symmetrically and slidably connected to both sides of the rotating gear 30 inside the adjusting cavity 11. The sides of the first rack 43 and the second rack 33 are both meshed and connected to the rotating gear 30. Inner sides of the mutually remote ends of the first rack 43 and the second rack 33 are both connected with connecting plates 31; A cylinder 9 is installed at the top end of the adjusting frame 10. The lower end of the cylinder 9 is connected to the upper connecting plate 31. A positioning pin 32 is connected to the side of the lower connecting plate 31, and the positioning pin 32 is inserted into the positioning hole 36; The side of the first rack 43 is also connected with a drilling machine 29, and the drilling machine 29 is used for punching the upper end surface of the flange.

[0036] Furthermore, stabilizing grooves 34 are arranged on both sides inside the adjusting cavity 11, and a number of stabilizing blocks 35 are arranged on both sides of the first rack 43 and the second rack 33. The stabilizing blocks 35 are slidably connected to the inside of the stabilizing grooves 34 in a matching manner.

[0037] This embodiment is implemented as follows: The rotating punching assembly rotates the punching assembly inside the bearing table 2 and rotates around the mold 7 for punching. And during the operation of single punching, pre-positioning is achieved to improve the punching accuracy. Specifically, the rotating mechanism adopted in this embodiment is to open a rotating cavity 39 inside the bearing table 2. By installing the driving gear ring 8 inside the rotating cavity 39, a number of second motors 40 drive the driving gear 42 to rotate, and the driving gear 42 drives the driving gear ring 8 to rotate, so as to realize the displacement of the side block 38, and the punching mechanism is installed on the side block 38, thus realizing the displacement of the punching mechanism.

[0038] For the punching mechanism, what it needs to achieve is to perform pre-positioning during the operation of single punching to improve the punching accuracy. Specifically, the cylinder 9 is pressed down to press down the first rack 43 inside the adjusting frame 10. During the process of pressing down the first rack 43, the rotating gear 30 is driven to rotate. Synchronously, the second rack 33 on the other side will be driven to move upward. During the process of moving upward the second rack 33, the positioning pin 32 will be driven to move upward, and the positioning pin 32 will come into contact with the positioning hole 36 in advance and insert into the positioning hole 36. At this time, it can be ensured that the upper drilling machine 29 will definitely be in the position of the die hole 37 corresponding to the two inserted positioning holes 36, thus realizing accurate positioning.

[0039] With this drilling method, the situation where the mold 7 is damaged due to misoperation is essentially eliminated. Similarly, the generated debris will not accumulate in the die hole 37, but will finally fall through the formed hole. There are stabilizing grooves 34 provided on both sides inside the adjustment cavity 11, and a number of stabilizing blocks 35 are provided on both sides of the first rack 43 and the second rack 33. The stabilizing blocks 35 are slidably connected to the inside of the stabilizing grooves 34 to ensure the stable movement of the two racks and prevent the deviation of drilling.

[0040] Please refer to Figures 1 to 10 , a method for a drilling device for a wind power tower connection flange according to the present invention, the method comprising the following steps: Step 1: Lift the flange to be drilled and processed onto the mold 7, and then perform a deviation correction operation on the flange to be drilled and processed to assist the flange in aligning with the die hole 37 on the mold 7. Step 2: Correct the deviation of the flange through the fastening and deviation correction assembly, and assist in clamping the flange from the upper end face of the flange during the deviation correction operation. After the clamping and deviation correction are completed, perform drilling processing. Step 3: Perform drilling processing by the rotating drilling assembly. The rotating drilling assembly rotates around the mold 7 and drills holes in sequence. During a single drilling operation, the rotating drilling assembly performs auxiliary positioning from below the mold 7 in advance and drills holes on the upper end face of the flange. After the drilling is completed, the flange can be taken out.

[0041] In summary, the present invention improves the processing efficiency and eliminates redundant operations by providing a carrier table, a mold, and a fastening and deviation correction assembly. The carrier table cooperates with the mold to support the wind power flange. When the mold supports the wind power flange, the wind power flange is centered with the mold through the fastening and deviation correction assembly, and during the alignment process, the upper end face of the wind power flange is automatically assisted in fastening, so as to adapt to wind power flanges of different thicknesses for fastening, improving the applicability. At the same time, the mold can provide drilling holes for the wind power flange, and the rotating drilling assembly rotates around for drilling, without the need to adjust the positions of the wind power flange and the mold. Compared with adjusting the large-volume wind power flange body and the mold, the operation of adjusting the rotating drilling assembly is more convenient and efficient. Moreover, during the drilling process, automatic positioning and alignment are performed to ensure the drilling accuracy. In addition, by adopting the drilling method of placing the wind power flange on the upper end face of the mold, the situation of debris clogging in the die hole can be effectively reduced, eliminating the need to clean the die hole, reducing the damage caused by debris to the inside of the formed hole, and improving the drilling efficiency and the quality of the formed hole.

[0042] The above has schematically described the present invention and its embodiments. This description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and, without departing from the spirit of the present invention, design similar structural forms and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

[0043] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drilling device for a wind power tower connection flange, comprising a base (1) and a bearing platform (2) mounted on the upper end of the base (1), characterized in that: A plurality of brackets (6) are arranged at the upper end of the support platform (2); a mold (7) for supporting the flange and drilling holes at fixed points is connected between the top ends of the plurality of brackets (6); a plurality of mold holes (37) are evenly distributed on the mold (7); and positioning holes (36) are also arranged on the outer sides of the mold (7) corresponding to the mold holes (37); The upper end of the bearing platform (2) is located in the mold (7) and is also provided with a fastening and deviation correction component, which is used to correct the deviation and position of the flange and perform auxiliary fastening at the same time; A rotating punching assembly is also provided inside the support platform (2), and the rotating punching assembly is used to perform rotating punching around the mold (7).

2. The drilling device for the connection flange of a wind power tower according to claim 1, characterized in that: The fastening and correcting assembly comprises a correcting mechanism and a fastening mechanism. The correcting mechanism comprises a screw groove (12) opened at the center of the upper end surface of the bearing platform (2). A first motor (23) is arranged at one end of the screw groove (12). The power output shaft of the first motor (23) is connected to one end of the first screw (3). The other end of the first screw (3) is coaxially connected to the second screw (4). The first screw (3) and the second screw (4) have the same length and opposite outer threads. The outer sides of the first screw (3) and the second screw (4) are both threadedly connected with a screw sleeve (25). A connecting rod (14) is connected above each screw sleeve (25). Sides of the two connecting rods (14) that are away from each other are provided with a mounting seat (22). The upper and lower end surfaces of the mounting seat (22) are both connected to an extension frame (20). A bonding roller (21) is rotatably connected between the ends of the extension frame (20). The bonding roller (21) moves with the connecting rod (14) and finally bonds to the inner side surface of the flange.

3. The drilling device for the connection flange of a wind power tower according to claim 2, characterized in that: The fastening mechanism comprises two telescopic members and a guide member, wherein the single telescopic member is connected to the top end of the connecting rod (14), the top ends of the two telescopic members are respectively attached to the two sides of the guide member, and the two telescopic members are guided downward by the guide member to move in the process of following the movement of the connecting rod (14), and finally attached to the upper end face and the inner side face of the flange; A single telescopic member comprises a telescopic tube (15) mounted on the top of a connecting rod (14), a return spring (28) having one end connected to the bottom of the telescopic tube (15), and a pull rod (16) connected to the other end of the return spring (28); an upper clamping plate (19) is connected to the top of the pull rod (16), and one end of the upper clamping plate (19) is attached to the side surface of the guide member; another laminating roller (21) is also connected below the upper clamping plate (19); the height of the laminating roller (21) connected below the upper clamping plate (19) is higher than the upper end surface of the mold (7); The guide member comprises a column (5) installed at the center of the upper end of the support platform (2) and a crossbeam (13) connected to the top of the column (5), two lower guide blocks (17) are symmetrically arranged at both ends of the crossbeam (13), a connecting pin (18) is connected between the two lower guide blocks (17), a cavity is formed between the two lower guide blocks (17), and the pull rod (16) is placed in the cavity, the upper end surfaces of the two lower guide blocks (17) are formed with a slope, and one end of the upper clamping plate (19) is attached to the outer side of the slope.

4. The drilling device for the connection flange of a wind power tower according to claim 1, characterized in that: The rotary punching assembly comprises a rotary mechanism and a punching mechanism, wherein the rotary mechanism is arranged inside the support platform (2), and the punching mechanism is connected to the outside of the rotary mechanism, and the punching mechanism is used to position and connect with the lower end of the mold (7) during the punching process and punch holes on the upper end surface of the flange at the same time; The rotating mechanism specifically comprises a rotating chamber (39) opened inside the supporting platform (2), a driving gear ring (8) installed inside the rotating chamber (39), and a plurality of second motors (40) arranged inside the rotating chamber (39); the power output shafts of the plurality of second motors (40) are all connected to driving gears (42); the driving gears (42) are meshingly connected to the inner side of the driving gear ring (8); the outer side of the driving gear ring (8) is also connected to a side block (38); and the punching mechanism is connected above the side block (38).

5. The drilling device for the connection flange of a wind power tower according to claim 4, characterized in that: A rolling groove is also formed around the bottom of the rotating cavity (39), and a plurality of balls (41) are arranged in the rolling groove. The plurality of balls (41) are attached to the lower end surface of the driving gear ring (8).

6. The drilling device for the connection flange of a wind power tower according to claim 4, characterized in that: The punching mechanism comprises an adjustment frame (10) connected to the side block (38), an adjustment cavity (11) formed inside the adjustment frame (10), and a rotating gear (30) installed at the center of the adjustment cavity (11); a first rack (43) and a second rack (33) are symmetrically slidably connected on both sides of the rotating gear (30) inside the adjustment cavity (11); the side surfaces of the first rack (43) and the second rack (33) are meshedly connected to the rotating gear (30); and the inner sides of the ends of the first rack (43) and the second rack (33) that are away from each other are connected to a connecting plate (31); A cylinder (9) is installed at the top of the adjustment frame (10), the lower end of the cylinder (9) is connected to a connecting plate (31) located above, a positioning pin (32) is connected to the side of the connecting plate (31) located below, and the positioning pin (32) is inserted into the positioning hole (36); A drilling machine (29) is also connected to the side surface of the first rack (43), and the drilling machine (29) is used to drill holes on the upper end surface of the flange.

7. The drilling device for the wind power tower connection flange according to claim 6, characterized in that: Both sides of the regulating cavity (11) are provided with stabilizing grooves (34), and both sides of the first rack (43) and the second rack (33) are provided with a plurality of stabilizing blocks (35), and the stabilizing blocks (35) are slidably connected to the inside of the stabilizing grooves (34).

8. The drilling device for the connection flange of a wind power tower according to claim 2, characterized in that: Moving grooves (26) are symmetrically arranged on both sides of the screw groove (12), and moving blocks (24) are symmetrically arranged on both sides of the two screw sleeves (25), and the moving blocks (24) are slidably connected in the moving grooves (26).

9. The drilling device for the connection flange of a wind power tower according to claim 3, characterized in that: A limit block (27) is symmetrically arranged at one end of the pull rod (16) located inside the telescopic cylinder (15), and the limit block (27) is slidably connected to the inside of the telescopic cylinder (15).

10. A method for drilling a wind turbine tower connection flange, applied to the drilling device for a wind turbine tower connection flange according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: hoisting the flange to be drilled onto the mold (7), and then performing a deviation correction operation on the flange to be drilled to assist the flange in aligning with the mold hole (37) on the mold (7); Step 2: Correct the flange by tightening the correction component, and perform auxiliary clamping on the flange from the upper end of the flange during the correction operation. After the clamping and correction are completed, perform drilling processing; Step 3: Drilling is performed by a rotating punching assembly. The rotating punching assembly rotates around the mold (7) and punches holes in sequence. During a single punching operation, the rotating punching assembly performs auxiliary positioning from below the mold (7) in advance and punches holes on the upper end surface of the flange. After the drilling is completed, the flange can be removed.

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