A drilling device and method for the connecting flange of a wind power tower

Abstract

The present invention relates to the technical field of wind power flange processing. More specifically, the present invention provides a drilling device and method for a connecting flange of a wind power tower. By setting a bearing platform, a mold and a fastening and alignment correction component, the bearing platform cooperates with the mold to support the wind power flange. When the mold supports the wind power flange, the fastening and alignment correction component is used to center-align the wind power flange with the mold. During the alignment process, the upper end surface of the wind power flange is automatically assisted in fastening, so as to improve the processing efficiency and eliminate unnecessary operations. During this fastening process, wind power flanges with different thicknesses can be adapted for fastening, improving the applicability. And the rotary drilling component is used for circumferential rotary 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 rotary drilling component is more convenient and has higher efficiency.

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 the connecting flange of a wind power tower. Background Art

[0002] The wind power flange is an important intermediate part connecting the wind turbine blade and the main shaft and 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 holes and 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 power generation unit, the accuracy of its drilling positioning is directly related to the performance and safety of the entire generation unit. Therefore, the method and process of drilling positioning have become one of the key links in the production process of the wind power generation unit.

[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 drilling in this way. 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 inside of 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 the 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 the connecting flange of a wind power tower to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A drilling device for the connecting flange of a wind power tower, including 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, and a mold for supporting and positioning drilling of the flange is connected between the tops of the plurality of brackets. 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;

[0008] At the upper end of the bearing platform 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.

[0009] A rotating drilling component is also provided inside the bearing platform. The rotating drilling component is used to rotate around the mold for drilling.

[0010] 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 surface of the bearing platform. 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 single screw sleeve, a connecting rod is connected. On the mutually remote sides of the two connecting rods, mounting seats are provided. Both the upper and lower end faces of the mounting seats are connected with extension frames. Between the ends of the extension frames, a fitting roller is rotatably connected. And the fitting roller moves following the connecting rod and finally fits against the inner side surface of the flange.

[0011] A further technical solution of the present application: The fastening mechanism includes two telescopic members and a guiding member. Each single telescopic member is connected to the top end of the connecting rod. The top ends of the two telescopic members respectively fit against 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 for displacement and finally fit against the upper end surface and the inner side surface of the flange.

[0012] Each single telescopic member includes a telescopic cylinder installed at the top end of the connecting rod, a pulling spring with one end connected to the inner bottom of the telescopic cylinder, and a pull rod connected to the other end of the pulling spring. The top end of the pull rod is connected with an upper clamping plate. And one end of the upper clamping plate fits against the side surface 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 surface of the mold.

[0013] The guiding member includes a column installed at the center of the upper end of the bearing platform and a cross beam connected to the top end of the column. At both ends of the cross beam, two lower guiding blocks are symmetrically provided. 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 inside the cavity. The upper end surfaces of the two lower guiding blocks form slopes. And one end of the upper clamping plate fits against the outside of the slope.

[0014] 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 platform. 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 surface of the flange.

[0015] The rotating mechanism specifically includes a rotating cavity opened inside the bearing platform, a driving gear ring installed inside the rotating cavity, and a number of second motors arranged inside the rotating cavity. The power output shafts of the number of 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.

[0016] A further technical solution of the present application: A rolling groove is also circumferentially opened at the bottom inside the rotating cavity, and a number of rolling balls are arranged inside the rolling groove, and the number of rolling balls are attached to the lower end surface of the driving gear ring.

[0017] 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. A first rack and a second rack 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;

[0018] 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, a positioning pin is connected to the side of the connecting plate located below, and the positioning pin is inserted into the positioning hole;

[0019] 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.

[0020] A further technical solution of the present application: Stabilizing grooves are arranged on both sides inside the adjusting cavity, a number of 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.

[0021] A further technical solution of the present application: Moving grooves are also symmetrically arranged on both sides inside the screw rod 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.

[0022] 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.

[0023] A method for a drilling device for a connecting flange of a wind power tower, the method comprising the following steps:

[0024] Step 1: Lift the flange to be drilled and processed onto the mold, and then perform a deviation rectification operation on the flange to be drilled and processed to assist the flange in aligning with the die holes on the mold;

[0025] Step 2: Rectify the deviation of the flange through the fastening and deviation rectification assembly, and simultaneously perform auxiliary clamping on the flange from the upper end surface of the flange during the deviation rectification operation. After the clamping and deviation rectification are completed, drilling and processing are carried out;

[0026] Step 3: Drilling is carried out 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.

[0027] Adopting the technical solution provided by the present invention, compared with the prior art, it has the following beneficial effects:

[0028] 1. By setting the bearing platform, mold and fastening and deviation-correcting component, the present invention supports the wind power flange 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 by the fastening and deviation-correcting 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 and eliminate redundant operations. And during this fastening process, wind power flanges with different thicknesses can be fastened, improving the applicability.

[0029] 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 carried out to ensure the drilling accuracy. And 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, eliminating the need to clean the mold holes, reducing the damage caused by debris to the inside of the formed holes, and improving the drilling efficiency and the quality of the formed holes. Description of the Drawings

[0030] Figure 1 is the overall structural schematic diagram of the present invention;

[0031] Figure 2 is the three-dimensional structural schematic diagram of the present invention;

[0032] Figure 3 is the present invention Figure 2 the enlarged structural schematic diagram at A in;

[0033] Figure 4 is the sectional structural schematic diagram of the present invention;

[0034] Figure 5 is the present invention Figure 4 the enlarged structural schematic diagram at B in;

[0035] Figure 6 is the sectional structural schematic diagram of the present invention;

[0036] Figure 7 is the present invention Figure 6 the enlarged structural schematic diagram at C in;

[0037] Figure 8 is a schematic cross-sectional structure diagram of the present invention;

[0038] Figure 9 for the present invention Figure 8 is an enlarged structure diagram of the D position in;

[0039] Figure 10 is a schematic cross-sectional structure diagram of the rotating cavity in the present invention.

[0040] Description of the reference numerals in the schematic diagram:

[0041] 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. Screw 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

[0042] 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 belong to the scope of protection of the present invention. The present invention will be further described below in conjunction with the embodiments.

[0043] 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 on the upper end of the base 1. A plurality of brackets 6 are provided on the upper end of the carrier table 2, and a mold 7 for supporting and fixedly drilling 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 on the outside of the mold 7 corresponding to the die holes 37;

[0044] A fastening and deviation correction assembly is further provided inside the mold 7 at the upper end of the carrier table 2, and the fastening and deviation correction assembly is used for deviation correction and positioning of the flange while assisting in fastening;

[0045] A rotating drilling component is also arranged in the bearing table 2, and the rotating drilling component is used for rotating around the mold 7 to drill holes.

[0046] This embodiment is implemented as follows: When drilling holes in the flange of a wind power tower, the traditional operation method of using the mold 7 for auxiliary 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 die hole 37, which causes wear to the die hole 37 and requires separate cleaning, resulting in inefficiency. At the same time, if the drilling machine 29 drills holes without aligning with the die hole 37, it will cause damage to the mold 7 and the flange. However, in the present invention, the mold 7 is placed below, and the wind power flange is placed above the mold 7. The mold 7 is fixed when carrying the wind power flange, and only the position of the wind power flange needs to be adjusted for alignment. The alignment operation is performed by the fastening and deviation correction component. The fastening and deviation correction component can support outward synchronously and finally contact the two inner vertices of the wind power flange. Since the fastening and deviation correction component is arranged at the center of the bearing table 2 and is coaxially arranged with the mold 7, when both ends of the fastening and deviation correction 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 deviation correction process, the fastening and deviation correction component will also assist in pressing the upper end surface of the wind power flange for auxiliary fastening.

[0047] The drilling operation is realized by the rotating drilling component arranged in the bearing table 2. The rotating drilling component can rotate around the mold 7 to drill holes without rotating the wind power flange for drilling, which makes the operation more convenient. Moreover, the rotating drilling component can automatically align with the corresponding die hole 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 misoperation and the damage of the mold 7. At the same time, the debris generated during drilling naturally falls and will not accumulate in the die hole 37, improving the hole-forming accuracy.

[0048] Please refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5, as a preferred embodiment of the present application, the fastening and rectifying assembly includes a rectifying mechanism and a fastening mechanism. The rectifying mechanism includes a screw groove 12 opened at the center of the upper end face of the bearing table 2. At one end inside the screw groove 12, a first motor 23 is provided. One end of 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 single screw sleeve 25, a connecting rod 14 is connected. On the mutually remote sides of the two connecting rods 14, mounting seats 22 are provided. Both the upper and lower end faces of the mounting seats 22 are connected with extension frames 20. Between the ends of the extension frames 20, a fitting roller 21 is rotatably connected. And the fitting roller 21 moves following the connecting rod 14 and finally fits against the inner side face of the flange.

[0049] Furthermore, the fastening mechanism includes two telescopic members and a guiding member. Each single telescopic member is connected to the top end of the connecting rod 14. The top ends of the two telescopic members respectively fit against both sides of the guiding member. And during the process of the two telescopic members moving following the connecting rod 14, they are downwardly guided and displaced by the guiding member and finally fit against the upper end face and the inner side face of the flange.

[0050] Each single telescopic member includes a telescopic cylinder 15 mounted on the top end of the connecting rod 14, a pull-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 pull-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 fits against the side face of the guiding member. Another fitting roller 21 is also connected below the upper clamping plate 19. The height of the fitting roller 21 connected below the upper clamping plate 19 is higher than the upper end face of the mold 7.

[0051] The guiding member includes a column 5 mounted at the center of the upper end of the bearing table 2 and a cross beam 13 connected to the top end of the column 5. At both ends of the cross beam 13, two lower guiding blocks 17 are symmetrically provided. 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 form slopes. And one end of the upper clamping plate 19 fits against the outside of the slope.

[0052] Furthermore, on both sides inside the screw groove 12, moving grooves 26 are symmetrically provided. On both sides of the two screw sleeves 25, moving blocks 24 are symmetrically provided. And the moving blocks 24 are slidably connected in cooperation with the moving grooves 26.

[0053] Furthermore, at one end of the pull rod 16 located inside the telescopic cylinder 15, limiting blocks 27 are symmetrically provided. And the limiting blocks 27 are slidably connected inside the telescopic cylinder 15.

[0054] This embodiment is implemented as follows: As mentioned before, the function of the fastening and rectifying assembly is to assist in positioning during the rectifying process. Specifically, it is achieved by combining a rectifying mechanism and a fastening mechanism. First, the rectifying mechanism performs rectifying operations. 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 uses 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 their lengths are the same. This ensures that during the synchronous rotation of the two screws, the sleeves 25 on the outer sides of the two screws rotate in opposite directions. There are also moving blocks 24 arranged on the outer sides of the sleeves 25. By cooperating with the moving slots 26 through the moving blocks 24, the two sleeves 25 move in opposite directions, thereby driving the two connecting rods 14 to move towards each other, and realizing the displacement of the mounting seat 22 driving the extension frame 20 and the fitting roller 21.

[0055] When the mounting seat 22 drives the extension frame 20 and the fitting roller 21 to displace, they will finally fit on the two inner vertices of the wind power flange. Since the 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.

[0056] During the displacement process of the fastening mechanism, it is necessary to synchronously fix the upper end surface of the wind power flange. This requires the synchronous cooperation of the telescopic members and the guiding members to achieve. The two telescopic members follow the rectifying mechanism to displace synchronously and contact the guiding members. The guiding members guide downward, causing the telescopic members to displace downward, and finally realizing that the two telescopic members fit on both sides of the upper end surface of the wind power flange for auxiliary fixation.

[0057] Specifically, the telescopic member is realized by a telescopic cylinder 15, a pulling-back spring 28, and a pull rod 16. The telescopic cylinder 15 will follow the connecting rod 14 to displace. 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 displacement 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 surface 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 drops slowly, and naturally can fit on the upper end surfaces of wind power flanges with different thicknesses, thus realizing the fixation applicable to wind power flanges with different thicknesses.

[0058] Please refer to Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 andFigure 10 , as a preferred embodiment of the present application, the rotating 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 be positioned and connected to the lower end of the mold 7 during the punching process while punching the upper end face of the flange;

[0059] Specifically, the rotating mechanism 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 outer side of the driving gear ring 8, and the punching mechanism is connected above the side block 38.

[0060] Furthermore, a rolling groove is also circumferentially opened at the inner bottom of the rotating cavity 39, and a number of rolling balls 41 are arranged inside the rolling groove. The number of rolling balls 41 is attached to the lower end face of the driving gear ring 8.

[0061] 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. Inside the adjusting cavity 11, a first rack 43 and a second rack 33 are symmetrically and slidably connected on both sides of the rotating gear 30. The sides of the first rack 43 and the second rack 33 are both meshed and connected to the rotating gear 30. The inner sides of the mutually remote ends of the first rack 43 and the second rack 33 are both connected with a connecting plate 31;

[0062] A cylinder 9 is installed at the top of the adjusting frame 10. The lower end of the cylinder 9 is connected to the 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;

[0063] The side of the first rack 43 is also connected with a drilling machine 29, and the drilling machine 29 is used to punch the upper end face of the flange.

[0064] 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.

[0065] This embodiment is implemented as follows: The rotating punching assembly rotates around the mold 7 by arranging a rotatable punching assembly inside the carrier table 2, and during the operation of single punching, pre-positioning is achieved to improve the punching accuracy. Specifically, in this embodiment, the rotating mechanism adopted is to open a rotating cavity 39 inside the carrier table 2. By installing the driving gear ring 8 inside the rotating cavity 39, several second motors 40 drive the driving gear 42 to rotate, and the driving gear 42 drives the driving gear ring 8 to rotate, realizing the displacement of the side block 38. The punching mechanism is installed on the side block 38, thus realizing the displacement of the punching mechanism.

[0066] For the punching mechanism, during the operation of single punching, it needs to achieve pre-positioning to improve the punching accuracy. Specifically, the air cylinder 9 is used to press down, pressing down the first rack 43 inside the adjusting frame 10. During the pressing-down process of the first rack 43, it drives the rotating gear 30 to rotate. Synchronously, it drives the second rack 33 on the other side to move upward. During the upward movement of the second rack 33, it drives the positioning pin 32 to move upward, and the positioning pin 32 will contact the positioning hole 36 in advance and insert into the positioning hole 36. At this time, it can be ensured that the drilling machine 29 above will definitely be at the die hole 37 position corresponding to the two inserted positioning holes 36, thus realizing precise positioning.

[0067] Adopting this punching method essentially eliminates the situation that the mold 7 is damaged by misoperation. Similarly, the generated debris will not accumulate in the die hole 37, but finally falls through the formed hole. Both sides inside the adjusting cavity 11 are provided with stabilizing grooves 34, and both sides of the first rack 43 and the second rack 33 are provided with several stabilizing blocks 35. The stabilizing blocks 35 are slidably connected to the stabilizing grooves 34 in a matching manner, which is to ensure the stable movement of the two racks and prevent the occurrence of punching deviation.

[0068] 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:

[0069] 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;

[0070] 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 face of the flange during the deviation correction operation. After the clamping and deviation correction are completed, perform drilling processing;

[0071] Step 3: The rotating punching assembly performs drilling processing. 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 in advance from below the mold 7 and punches holes on the upper end face of the flange. After the punching is completed, the flange can be taken out.

[0072] In summary, the present invention provides a loading platform, a mold, and a fastening and alignment component. The loading platform cooperates with the mold to support the wind power flange. When the mold supports the wind power flange, the fastening and alignment component centers the wind power flange with the mold. During the alignment process, the upper end surface of the wind power flange is automatically assisted in fastening, thereby improving the processing efficiency and eliminating unnecessary operations. Moreover, during this fastening process, it can adapt to wind power flanges of different thicknesses for fastening, improving the applicability. At the same time, the mold can provide punching holes for the wind power flange, and the rotating punching component rotates around to punch holes without adjusting 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 punching component is more convenient and efficient. Additionally, during the punching process, automatic positioning and alignment are performed to ensure the punching accuracy. Moreover, by using the punching method of placing the wind power flange on the upper end surface of the mold, the situation of debris clogging inside the die holes can be effectively reduced, eliminating the need to clean the die holes and reducing the damage caused by debris to the inside of the formed holes, thus improving the punching efficiency and the quality of the formed holes.

[0073] The above has schematically described the present invention and its embodiments. This description is not restrictive, and what is shown in the drawings is only one of the embodiments of the present invention. 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 purpose of the present invention, creatively design a structural manner and embodiments similar to this technical solution, they shall fall within the protection scope of the present invention.

[0074] 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 way 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 connecting flange of a wind power tower, comprising a base (1) and a bearing platform (2) installed at the upper end of the base (1), characterized in that: A number of brackets (6) are arranged at the upper end of the bearing platform (2), and a mold (7) for supporting and positioning drilling of the flange is connected between the tops of the number of brackets (6). A number of mold holes (37) are evenly distributed on the mold (7), and positioning holes (36) are also arranged outside the mold (7) corresponding to the mold holes (37); A fastening and deviation correction assembly is further arranged inside the mold (7) at the upper end of the bearing platform (2), and the fastening and deviation correction assembly is used for deviation correction positioning of the flange and auxiliary fastening at the same time; The fastening and deviation correction assembly includes a deviation correction mechanism and a fastening mechanism. The deviation correction mechanism includes 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 inside the screw groove (12). One end of a first screw (3) is connected to the power output shaft of the first motor (23). 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) are of the same length and have opposite outer threads. Sleeve nuts (25) are threadedly connected to the outsides of both the first screw (3) and the second screw (4). Connecting rods (14) are connected above each sleeve nut (25). Mounting seats (22) are arranged on the sides of the two connecting rods (14) away from each other. Extension frames (20) are connected to both the upper and lower end faces of the mounting seats (22). A fitting roller (21) is rotatably connected between the ends of the extension frames (20), and the fitting roller (21) moves with the connecting rod (14) and finally fits against the inner side surface of the flange; The fastening mechanism includes two telescopic members and a guiding member. Each telescopic member is connected to the top of the connecting rod (14). The tops of the two telescopic members are respectively fitted against both sides of the guiding member. And the two telescopic members are guided downward by the guiding member during the movement following the connecting rod (14), and finally fit against the upper end surface and the inner side surface of the flange; A rotating drilling assembly is further arranged inside the bearing platform (2), and the rotating drilling assembly is used for rotating drilling around the mold (7); The rotating drilling assembly includes a rotating mechanism and a drilling mechanism. The rotating mechanism is arranged inside the bearing platform (2), and the drilling mechanism is connected to the outside of the rotating mechanism. The drilling mechanism is used for positioning connection with the lower end of the mold (7) during the drilling process and drilling the upper end surface of the flange.

2. The drilling device for the connecting flange of the wind power tower according to claim 1, characterized in that, Each telescopic member includes a telescopic cylinder (15) installed at the top of the connecting rod (14), a pulling 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 spring (28). The top of the pull rod (16) is connected to an upper clamping plate (19), and one end of the upper clamping plate (19) fits against the side surface of the guiding member. Another fitting roller (21) is also connected below the upper clamping plate (19). The height of the fitting roller (21) connected below the upper clamping plate (19) is higher than the upper end surface of the mold (7); The guiding member includes a column (5) installed at the center of the upper end of the bearing table (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 a pull rod (16) is placed in the cavity. The upper end faces of the two lower guiding blocks (17) form slopes, and one end of the upper clamping plate (19) fits against the outside of the slope.

3. The drilling device for the connecting flange of the wind power tower according to claim 1, characterized in that, 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). 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). The punching mechanism is connected above the side block (38).

4. The drilling device for the connecting flange of a wind power tower according to claim 3, characterized in that, A rolling groove is also circumferentially opened at the inner bottom of the rotating cavity (39), and a number of rolling balls (41) are arranged in the rolling groove. The number of rolling balls (41) fits against the lower end face of the driving gear ring (8).

5. The drilling device for the connection flange of a wind power tower according to claim 3, wherein 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). A first rack (43) and a second rack (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). Connecting plates (31) are connected to the inner sides of the mutually remote ends of the first rack (43) and the second rack (33); 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 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 a positioning hole (36); A drilling machine (29) is also connected to the side of the first rack (43). The drilling machine (29) is used for punching the upper end face of the flange.

6. The drilling device for the wind power tower connection flange according to claim 5, characterized in that, Stabilizing grooves (34) are arranged on both sides inside the adjusting cavity (11). 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.

7. The drilling device for the wind power tower connection flange according to claim 1, wherein Moving grooves (26) are also symmetrically arranged on both sides inside 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 inside of the moving grooves (26) in a matching manner.

8. The drilling device for the connecting flange of a wind power tower according to claim 2, characterized in that, Limit blocks (27) are also symmetrically arranged at one end of the pull rod (16) located inside the telescopic cylinder (15), and the limit blocks (27) are slidably connected to the inside of the telescopic cylinder (15).

9. A method for a drilling device of a wind power tower connection flange, applied to the drilling device of the wind power tower connection flange according to any one of claims 1 to 8, characterized in that, The method includes 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: Rectify the flange through the fastening and rectifying assembly, and perform auxiliary clamping on the flange from the upper end face of the flange during the rectifying operation. After the clamping and rectifying are completed, drilling is carried out. Step 3: Drilling is carried out 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.

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