A wind power flange bolt hole processing device

Abstract

The application belongs to the field of wind power flange processing, and particularly relates to a wind power flange bolt hole processing device, which comprises a base, a supporting circular table is arranged on the base, a drilling mechanism is arranged above the supporting circular table, a sliding frame is arranged on the drilling mechanism, a plurality of auxiliary supporting mechanisms are uniformly arranged on the base along the circumference thereof, and a plurality of uniformly distributed sliding holes are formed on the supporting circular table along the circumferential direction thereof. The device changes the contact between the wind turbine flange and the machine tool supporting circular table from instantaneous rigid impact to slow and stable contact, effectively avoids the hidden damage to the machine tool, and protects the precision processing reference surface of the wind turbine flange. Meanwhile, the device shortens the sliding distance required for pushing the subsequent wind turbine flange inner support adjustment position. Meanwhile, the continuous upward supporting force of the spring rod reduces the normal pressure of the flange on the table surface, thereby greatly reducing the sliding friction force during adjustment, and avoiding the risk of scratching between the workpiece and the supporting circular table.

Description

Technical Field

[0001] This invention belongs to the field of wind power flange processing technology, and particularly relates to a wind power flange bolt hole processing device. Background Technology

[0002] As the capacity of wind turbine generators continues to increase, the size and weight of wind turbine flanges, as key connecting components, are also increasing, typically weighing tens of tons. In the bolt hole machining process, current technology generally employs large CNC drilling machines in conjunction with hydraulic internal support devices: first, the flange is hoisted onto the machine tool's worktable by an overhead crane; then, using the inner hole as a reference, a hydraulic mechanism is used to tighten and center it to the machine tool's rotation center; finally, the drill bit is driven to drill along the circumference.

[0003] However, this process still has significant technical challenges in the critical material loading and positioning stages. Firstly, the hoisting and positioning of heavy flanges is highly dependent on operator experience and equipment condition. Even when following specifications, the limitations of the crane's micro-motion control, the elasticity of the wire rope, and the unavoidable slight tilting can all lead to instantaneous impact when the workpiece lands. This impact load can cause hidden damage to the machine tool, and long-term accumulation will affect the machine tool's geometric accuracy, while also potentially damaging the flange's reference bottom surface. Secondly, after initial positioning, a hydraulic internal support device needs to be activated to slide and center the flange, which weighs tens of tons. Under immense static friction, relative sliding between the flange bottom surface and the worktable surface is highly likely, posing a risk of wear on the workpiece's finished surface and the machine tool table. Furthermore, poor sliding can lead to substandard positioning accuracy, requiring repeated adjustments and impacting processing efficiency and safety.

[0004] Therefore, how to effectively buffer the impact of falling during the loading of heavy flanges and reduce the sliding friction between the wind turbine flange and the machine tool support frustum during adjustment has become a practical engineering problem that urgently needs to be solved to improve the processing quality of ultra-large-sized wind turbine flanges, protect expensive machine tools, and achieve efficient automated production. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a wind turbine flange bolt hole processing device, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: The present invention provides a wind turbine flange bolt hole processing device, including a base, a supporting frustum on the base, a drilling mechanism above the supporting frustum, a sliding frame on the drilling mechanism, and multiple auxiliary support mechanisms evenly distributed along the circumference of the base. Multiple evenly distributed sliding holes are formed on the supporting frustum along its circumference, extending radially along the supporting frustum. A falling guide mechanism is provided within each sliding hole. Multiple evenly distributed inner support components are arranged on the supporting frustum along its circumference, with the inner support components and the falling guide mechanisms interleaved. The auxiliary support mechanism includes a buffer component disposed on the base. The uppermost ends of the multiple buffer components together form an annular support surface. During the lowering of the wind turbine flange, the buffer component contacts the annular support surface and pushes the annular support surface downwards. Then, the wind turbine flange contacts the supporting frustum for rigid support. A clearance component is provided between the buffer component and the drilling mechanism. The buffer component also has a conical positioning disc for insertion into the lower port of the wind turbine flange bolt hole. The falling guide mechanism includes a horizontal guide component disposed in the sliding hole, a vertical guide component disposed on the horizontal guide component, and an inclined guide roller rotatably disposed on the vertical guide component. During the process of the fan flange being supported by the annular support surface and moving down together, the guide roller contacts the inner hole of the moving fan flange and pushes the fan flange to be straightened.

[0007] According to an advantageous embodiment, the drilling mechanism includes an electric actuator mounted on a sliding frame, with a drill bit fixedly connected to the end of the telescopic section of the electric actuator.

[0008] According to an advantageous embodiment, the sliding frame includes two guide rails fixedly mounted on the ground, a linear motor mounted on the guide rails, a U-shaped fixing frame shared between the two linear motors, a rotary motor fixedly mounted on the U-shaped fixing frame, and a horizontal plate fixedly connected to the output shaft of the rotary motor via a connecting shaft. Two symmetrical mounting seats are mounted on the horizontal plate, and an electric push rod is fixedly mounted on the underside of the corresponding mounting seat.

[0009] According to an advantageous embodiment, the horizontal plate has two rows of symmetrical mounting holes, and the mounting base is fixed to the horizontal plate by bolts passing through the corresponding mounting holes and threaded nuts.

[0010] According to an advantageous embodiment, the buffer assembly is a spring rod detachably mounted at the edge of the upper surface of the base, and a tapered positioning disc is fixedly disposed at the movable section of the spring rod near the upper end.

[0011] According to an advantageous embodiment, the upper end of the movable section of the spring rod is rotatably provided with guide balls.

[0012] According to an advantageous embodiment, the clearance assembly includes a push rod and a lower pressure plate, the push rod being connected to the telescopic section of an electric push rod, the lower pressure plate being fixedly disposed at the corresponding movable section of the spring rod and near the upper end, and a tapered positioning disc being located above the corresponding lower pressure plate.

[0013] According to an advantageous embodiment, the horizontal guide assembly includes a slide block with rollers at the bottom. The slide block is slidably disposed in a slide hole via the rollers. A first guide rod is fixedly disposed in the slide hole. The slide block is slidably connected to the first guide rod via a first ear plate. A first spring is sleeved on the surface of the first guide rod. The two ends of the first spring are fixedly connected to the corresponding first ear plate and the inner wall of the slide hole, respectively.

[0014] According to an advantageous embodiment, the vertical guide assembly includes a slide plate slidably disposed on a slide block, a guide roller rotatably disposed on the upper side of the slide plate, a second guide rod fixedly disposed on the lower side of the slide plate, the slide block being slidably connected to the second guide rod via a second ear plate, a second spring being sleeved on the surface of the second guide rod, and the two ends of the second spring being fixedly connected to the corresponding second ear plate and the lower side of the slide plate, respectively.

[0015] According to an advantageous embodiment, the inner support assembly includes a hydraulic rod fixedly disposed on the upper side of the support platform, and the end of the telescopic section of the hydraulic rod is fixedly connected to a pressure block via a connecting shaft.

[0016] Compared with existing technologies, the wind turbine flange bolt hole processing device provided in this invention has the following beneficial effects: 1. In this invention, the annular support surface composed of multiple spring rods actively supports and compresses the large-tonnage wind turbine flange during its lowering, providing progressive support force and significantly offsetting the weight of the wind turbine flange. This transforms the contact between the wind turbine flange and the machine tool support frustum from an instantaneous rigid impact to a slow and stable contact, effectively avoiding hidden damage to the machine tool and protecting the precision machining reference surface of the wind turbine flange itself.

[0017] 2. In this invention, during the suspension and lowering stage of the fan flange, the lowering guide mechanism contacts the inner hole of the fan flange via an inclined guide roller, and uses the restoring force of the first spring to push the fan flange radially pre-aligned. This shortens the sliding distance required for subsequent adjustment of the fan flange's inner support. Simultaneously, the continuous upward supporting force of the spring rod reduces the normal pressure of the flange on the platform, thereby significantly reducing the sliding friction during adjustment and avoiding the risk of scratches between the workpiece and the supporting frustum.

[0018] 3. In this invention, during the drilling process, the electric actuator, in conjunction with the clearance assembly, allows the guide ball at the upper end of the spring rod to embed into the pre-machined bolt hole, causing the conical positioning plate to limit the movement of the fan flange. This effectively prevents the fan flange from horizontally deflecting or shifting during subsequent drilling, enhances the rigidity of the machining system, and improves the positional accuracy of the hole group and operational safety. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the state of the present invention when waiting for material to be loaded.

[0020] Figure 2 This is a three-dimensional schematic diagram of the fan flange in the present invention during its lowering.

[0021] Figure 3 This is a three-dimensional schematic diagram of the wind turbine flange placed behind the supporting frustum in this invention.

[0022] Figure 4 This is a three-dimensional structural diagram of the supporting frustum in this invention.

[0023] Figure 5 This is a front view diagram of the supporting frustum structure in this invention.

[0024] Figure 6 This is a regional distribution diagram of the annular support surface formed by multiple buffer components in this invention.

[0025] Figure 7 This is a schematic diagram showing the state of the spring rod before drilling the fan flange in this invention.

[0026] Figure 8 This is a schematic diagram showing the state of the spring rod after the drilling of the wind turbine flange is almost completed in this invention.

[0027] Figure 9 This is a schematic diagram showing the state of the spring rod and the conical positioning plate after the fan flange drilling is completed in this invention.

[0028] The attached figures are labeled as follows: 1. Base; 2. Supporting frustum; 3. Drilling mechanism; 31. Electric actuator; 32. Drilling tool; 4. Sliding frame; 41. Guide rail; 42. Linear motor; 43. U-shaped fixing frame; 44. Rotary motor; 45. Mounting seat; 5. Auxiliary support mechanism; 51. Buffer assembly; 511. Spring rod; 52. Clearance assembly; 521. Push rod; 522. Lower pressure plate; 53. Conical positioning plate; 6. Falling guide mechanism; 61. Horizontal guide assembly; 611. Slide seat; 612. First guide rod; 613. First spring; 62. Vertical guide assembly; 621. Slide plate; 622. Second guide rod; 623. Second spring; 63. Guide roller; 7. Internal support assembly; 71. Hydraulic rod; 72. Pressing block; 8. Annular support surface; 9. Guide ball; 100. Fan flange. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will now be described in further detail.

[0030] Please refer to the following: Figure 1 and Figure 2A wind turbine flange bolt hole processing device is used to process wind turbine flanges 100 weighing tens of tons or more. The processing device includes a base 1 fixedly set on the ground, a supporting truncated cone 2 welded on the base 1, a drilling mechanism 3 set above the supporting truncated cone 2, a sliding frame 4 set on the drilling mechanism 3, a plurality of auxiliary support mechanisms 5 evenly arranged along the circumference of the base 1, a plurality of evenly distributed sliding holes opened along the circumference of the supporting truncated cone 2, the sliding holes extending radially along the supporting truncated cone 2, a falling guide mechanism 6 set in the sliding holes, and a plurality of evenly distributed inner support components 7 arranged along the circumference of the supporting truncated cone 2, the plurality of inner support components 7 and the plurality of falling guide mechanisms 6 being staggered.

[0031] In practice, the wind turbine flange 100 is hoisted using an external overhead crane and multiple hoisting ropes. Once the wind turbine flange 100 is directly above the supporting platform 2, it is lowered. During the lowering process, the lower edge of the wind turbine flange 100 is first supported by auxiliary support mechanisms 5. The upward support force of multiple auxiliary support mechanisms 5 offsets the weight of the wind turbine flange 100. The combined action of multiple auxiliary support mechanisms 5 distributes part of the weight of the wind turbine flange 100, further reducing the impact force when the wind turbine flange 100 is lowered onto the supporting platform 2. This improves the stability of the wind turbine flange 100 during lowering. Furthermore, during the suspension and lowering process of the wind turbine flange 100, multiple lowering guide mechanisms 6 work together to actively center the wind turbine flange 100, minimizing the sliding distance of the wind turbine flange 100 after contact with the supporting frustum 2 and the subsequent adjustment of its position on the supporting frustum 2 by the inner support assembly 7. During the adjustment process, the wind turbine flange 100 also simultaneously bears the upward support force of multiple auxiliary support mechanisms 5, significantly reducing the actual pressure exerted by the wind turbine flange 100 on the supporting frustum 2. This greatly reduces the frictional force on the supporting frustum 2 during the sliding process, thereby significantly lowering the risk of wear and tear on both the wind turbine flange 100 and the supporting frustum 2 during the centering adjustment. Finally, the multiple inner support assemblies 7 together firmly fix the wind turbine flange 100 onto the supporting frustum 2.

[0032] See Figure 1 and Figure 2The drilling mechanism 3 includes an electric actuator 31 mounted on a sliding frame 4, with a drill bit 32 fixedly connected to the telescopic end of the electric actuator 31. The sliding frame 4 includes two guide rails 41 fixedly mounted on the ground. A linear motor 42 is mounted on each guide rail 41, and a U-shaped fixing frame 43 is shared between the two linear motors 42. A rotary motor 44 is fixedly mounted on the U-shaped fixing frame 43. The output shaft of the rotary motor 44 is fixedly connected to a horizontal plate via a connecting shaft. Two symmetrical mounting seats 45 are mounted on the horizontal plate, and the electric actuator 31 is fixedly mounted on the underside of the corresponding mounting seat 45. The horizontal plate has two rows of symmetrical mounting holes, and the mounting seats 45 are fixed to the horizontal plate by bolts passing through the corresponding mounting holes and threaded nuts. The linear motor 42 drives the U-shaped fixing frame 43 to move along the guide rails 41, moving the drill bit 32 to a predetermined position. The rotary motor 44 drives the horizontal plate to rotate, causing the two drill bits 32 to rotate and adjust according to a predetermined drilling path. The drill bit 32 extends through the electric actuator 31 to approach the upper side of the fan flange 100 and drills at a predetermined position.

[0033] It should be noted that the linear motor 42 is a drive device that directly converts electrical energy into linear motion mechanical energy, which is common knowledge to those skilled in the art. Therefore, its specific structure and electrical control connection method will not be described in detail in this solution.

[0034] See Figure 1 and Figure 6 In order to reduce the impact force when the fan flange 100 is placed on the support pedestal 2, the auxiliary support mechanism 5 in this solution includes a buffer component 51 set on the base 1. The uppermost ends of multiple buffer components 51 together form an annular support surface 8. During the process of the fan flange 100 being placed, it contacts the annular support surface 8 and pushes the annular support surface 8 to move down together. After that, the fan flange 100 contacts the support pedestal 2 for rigid support.

[0035] See Figure 3 and Figure 6 The buffer assembly 51 is a spring rod 511 detachably mounted on the edge of the upper surface of the base 1. When subjected to pressure from the fan flange 100, the spring rod 511 can compress and provide a gradually increasing upward support force to the fan flange 100.

[0036] During operation, as the fan flange 100 moves downward, its lower outer edge contacts the support surface formed by all the spring rods 511. The spring rods 511 are compressed by the pressure of the fan flange 100. The compression of the spring rods 511 generates an upward supporting force that offsets part of the weight of the fan flange 100. As the fan flange 100 moves downward slowly, the upward supporting force provided by the spring rods 511 gradually increases, further reducing the weight of the fan flange 100. Finally, the fan flange 100 slowly contacts the upper surface of the support frustum 2 under a state of significantly reduced weight, greatly weakening the impact force and allowing the fan flange 100 to be slowly and smoothly placed on the support frustum 2.

[0037] It is worth noting that the helical springs are made of chromium-vanadium alloy steel wire with a tensile strength of 1200~1500MPa. Compared with traditional carbon steel springs, their yield strength is increased by more than 40%, allowing them to withstand greater axial loads without plastic deformation, thus providing a foundation for high load-bearing capacity. Spring rod 511 should be regularly maintained and inspected, and replaced when it fails to meet load-bearing requirements.

[0038] The compression stroke of the fan flange 100 compressing the spring rod 511 by gravity is less than the maximum safe compression stroke of the spring rod 511, to avoid damage caused by excessive compression of the spring rod 511 in a single operation. Furthermore, the maximum downward displacement of the fan flange 100 in contact with all spring rods 511 and in compressing all springs must be greater than the distance from the upper end of the spring rod 511 to the surface of the supporting frustum 2, to avoid the problem that the fan flange 100's gravity cannot compress all spring rods 511 to the predetermined height to contact the supporting frustum 2.

[0039] See Figure 3 In order to reduce the friction between the fan flange 100 and the spring rod 511 when the fan flange 100 is suspended, a guide ball 9 is rotatably provided at the upper end of the movable section of the spring rod 511. The guide ball 9 replaces the upper end of the movable section of the spring rod 511 in contact with the fan flange 100, which can reduce the friction between the fan flange 100 and the spring rod 511 while transmitting pressure.

[0040] See Figure 1 , Figure 6 and Figure 7To further improve the stability of the fan flange 100 during drilling, a clearance assembly 52 is provided between the spring rod 511 and the electric actuator 31. The clearance assembly 52 includes a push rod 521 and a lower pressure plate 522. The push rod 521 is fixedly connected to the telescopic section of the electric actuator 31. The lower pressure plate 522 is fixedly positioned near the upper end of the corresponding movable section of the spring rod 511. One side of the lower pressure plate 522 extends outward from the outside of the fan flange 100, ensuring that the push rod 521 can contact the corresponding lower pressure plate 522 when it moves downward. A conical positioning plate 53 is fixedly positioned near the upper end of the movable section of the spring rod 511. The conical positioning plate 53 is positioned above the corresponding lower pressure plate 522.

[0041] During actual operation, the position of the spring rod 511 corresponds vertically to the position of the preset bolt holes on the upper part of the fan flange 100. During the initial drilling, the drill bit is positioned directly above the spring rod 511, and the contact point between the ball bearing and the fan flange 100 is the position of the preset bolt holes on the fan flange 100. Figure 7 As shown. When the electric actuator 31 drives the drill bit of the drill bit 32 to move down and drill a hole in the preset position of the fan flange 100, the electric actuator 31 simultaneously drives the push rod 521 down. Before the drill bit completely drills the fan flange 100, the lower end of the electric actuator 31 can first drive the corresponding push rod 521 to abut against the lower pressure plate 522, and push the lower pressure plate 522 to drive the spring rod 511 to move down slightly, so that when the drill bit drills the fan flange 100, the drill bit will not contact the ball bearing at the upper end of the spring rod 511, causing wear of the ball bearing. Figure 8 As shown. Furthermore, when the drill bit resets after drilling is complete, the push rod 521 resets simultaneously. At this time, because the position on the fan flange 100 that originally abutted against the corresponding ball forms a bolt hole, the ball, along with the upper end of the movable section of the spring rod 511, is inserted into the bolt hole until the conical positioning plate 53 on the surface of the movable section of the spring rod 511 comes into contact with the lower end of the bolt hole and stops moving. At this time, the conical positioning plate 53 can limit the fan flange 100, further preventing the fan flange 100 from horizontally deflecting during subsequent drilling. Moreover, as the number of bolt holes increases, this limiting effect gradually strengthens, such as... Figure 9 As shown.

[0042] See Figure 3 and Figure 5 To reduce the risk of wear when the fan flange 100 slides and adjusts its position on the supporting frustum 2, the falling guide mechanism 6 includes a horizontal guide component 61 disposed in the sliding hole, a vertical guide component 62 disposed on the horizontal guide component 61, and an inclined guide roller 63 rotatably disposed on the vertical guide component 62. During the process of the fan flange 100 being supported by the annular support surface 8 and moving down together, the guide roller 63 contacts the inner hole of the moving fan flange 100 and pushes the fan flange 100 to be straightened.

[0043] In actual operation, after the fan flange 100 moves above the supporting frustum 2, it moves downward and first contacts the subsequent support surface. After descending a certain distance, the inner hole of the fan flange 100 will come into contact with one or more guide rollers 63. The guide rollers 63 are subjected to pressure and rotate relative to the inner hole of the fan flange 100 to reduce friction. Under the pressure of the downward movement of the fan flange 100, the guide rollers 63 slide radially along the center of the supporting frustum 2 under the action of the horizontal guide assembly 61. The multiple horizontal guide assemblies 61 simultaneously generate thrust in multiple directions to push the fan flange 100 to be radially centered around the center of the supporting frustum 2. At the same time, the guide rollers 63 also move downward under the action of the vertical guide assembly 62.

[0044] See Figure 3 and Figure 4 To avoid rigid contact between the fan flange 100 and the guide roller 63 during the downward movement, the horizontal guide assembly 61 includes a slide 611 with rollers at the bottom. The slide 611 is slidably disposed within a sliding hole via the rollers. A first guide rod 612 is fixedly disposed within the sliding hole. The slide 611 is slidably connected to the first guide rod 612 via a first ear plate. A first spring 613 is sleeved on the surface of the first guide rod 612. The two ends of the first spring 613 are fixedly connected to the corresponding first ear plate and the inner wall of the sliding hole, respectively. The slide 611 slides along the sliding hole and compresses the first spring 613.

[0045] See Figures 3-5 The vertical guide assembly 62 includes a slide plate 621 slidably mounted on a slide block 611, a guide roller 63 rotatably mounted on the upper side of the slide plate 621, and a second guide rod 622 fixedly mounted on the lower side of the slide plate 621. The slide block 611 is slidably connected to the second guide rod 622 via a second ear plate. A second spring 623 is sleeved on the surface of the second guide rod 622, and both ends of the second spring 623 are fixedly connected to the corresponding second ear plate and the lower side of the slide plate 621, respectively. The slide plate 621 drives the second guide rod 622 to move downward, causing the second spring 623 to stretch. This structure provides a buffer space for the slide plate 621 in the vertical direction, thereby facilitating smooth movement of the slide block 611 in the horizontal direction.

[0046] In actual operation, when the fan flange 100 moves downward, it comes into contact with the inclined guide roller 63, causing the guide roller 63 to be subjected to downward pressure. This pressure pushes the slide plate 621 downward while simultaneously causing the slide block 611 to move horizontally. This causes the first spring 613 to compress while the second spring 623 is stretched. The reaction force generated by the compression of the first spring 613 pushes the fan flange 100 through the corresponding guide roller 63. There are multiple guide rollers 63 evenly distributed along the circumference. The combined reaction forces of multiple sets of guide rollers 63 ensure that the fan flange 100 is positioned as close as possible to the preset center of the supporting frustum 2 during the descent. Subsequently, when the fan flange 100 is simultaneously pushed and locked in the center by multiple internal support components 7, the displacement of the fan flange 100 relative to the supporting frustum 2 is reduced, thereby reducing the risk of wear when the fan flange 100 slides relative to the supporting frustum 2. Furthermore, after the fan flange 100 is completely placed on the supporting frustum 2, since all the spring rods 511 are in a compressed state, the resulting reaction force continuously provides upward support to the fan flange 100, which greatly reduces the pressure exerted by the fan flange 100 on the supporting frustum 2. As a result, the friction force when the fan flange 100 slides is reduced, further reducing the risk of wear when the fan flange 100 slides and adjusts.

[0047] See Figure 3 and Figure 4 The inner support assembly 7 includes a hydraulic rod 71 fixedly mounted on the upper side of the supporting frustum 2. The end of the telescopic section of the hydraulic rod 71 is fixedly connected to a pressing block 72 via a connecting shaft. When the hydraulic rod 71 extends, it causes the pressing block 72 to press against the inner wall of the fan flange 100. Multiple pressing blocks 72 are evenly distributed on the inner wall of the fan flange 100, thereby achieving adjustment and movement of the fan flange 100 while ultimately locking the fan flange 100.

[0048] This solution adds an auxiliary support mechanism 5 and a falling guide mechanism 6 compared to traditional processing devices in the prior art. However, these mechanisms are all conventional mechanical mechanisms, with relatively low production and processing difficulty and material costs. Compared to the improvement in processing quality and efficiency of the large-tonnage fan flange 100 by this technical solution, and the fact that the structure of this technical solution reduces the skill requirements for operators, the additional structural cost is almost negligible. In summary, the above-mentioned technical solution of the present invention is a specific improvement based entirely on the above-mentioned existing technology and to solve the technical problems.

[0049] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0050] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "link," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A wind turbine flange bolt hole processing device, comprising a base, a supporting frustum disposed on the base, a drilling mechanism disposed above the supporting frustum, and a sliding frame disposed on the drilling mechanism, characterized in that: The base is provided with a plurality of auxiliary support mechanisms evenly arranged along its circumference. The support platform is provided with a plurality of evenly distributed sliding holes along its circumference. The sliding holes extend radially along the support platform. A falling guide mechanism is provided in the sliding holes. The support platform is provided with a plurality of evenly distributed inner support components along its circumference. The multiple inner support components and the multiple falling guide mechanisms are staggered. The auxiliary support mechanism includes a buffer assembly set on the base. The uppermost ends of multiple buffer assemblies together form an annular support surface. During the lowering process of the wind turbine flange, it contacts the annular support surface and pushes the annular support surface to move down together. Then the wind turbine flange contacts the support frustum for rigid support. A clearance assembly is set between the buffer assembly and the drilling mechanism. The buffer assembly is also equipped with a conical positioning plate for insertion into the lower port of the bolt hole of the wind turbine flange. The falling guide mechanism includes a horizontal guide component disposed in the sliding hole, a vertical guide component disposed on the horizontal guide component, and an inclined guide roller rotatably disposed on the vertical guide component. During the process of the fan flange being supported by the annular support surface and moving down together, the guide roller contacts the inner hole of the moving fan flange and pushes the fan flange to be straightened. The buffer assembly is a spring rod that can be detachably installed on the edge of the upper surface of the base, and the conical positioning plate is fixedly installed on the movable section of the spring rod near the upper end; The clearance assembly includes a push rod and a lower pressure plate. The push rod is connected to the telescopic section of the electric push rod. The lower pressure plate is fixedly installed at the upper end of the corresponding movable section of the spring rod. The conical positioning plate is located above the corresponding lower pressure plate.

2. The wind turbine flange bolt hole processing device according to claim 1, characterized in that, The drilling mechanism includes an electric actuator mounted on a sliding frame, with a drill fixedly connected to the end of the telescopic section of the electric actuator.

3. The wind turbine flange bolt hole processing device according to claim 2, characterized in that, The sliding frame includes two guide rails fixedly mounted on the ground. A linear motor is mounted on the guide rails. A U-shaped fixed frame is provided between the two linear motors. A rotary motor is fixedly mounted on the U-shaped fixed frame. The output shaft of the rotary motor is fixedly connected to a horizontal plate through a connecting shaft. Two symmetrical mounting seats are provided on the horizontal plate. An electric push rod is fixedly mounted on the lower side of the corresponding mounting seat.

4. The wind turbine flange bolt hole processing device according to claim 3, characterized in that, The horizontal plate has two rows of symmetrical mounting holes. The mounting base is fixed to the horizontal plate by bolts passing through the corresponding mounting holes and threaded nuts.

5. The wind turbine flange bolt hole processing device according to claim 4, characterized in that, The upper end of the movable section of the spring rod is rotatably equipped with guide balls.

6. The wind turbine flange bolt hole processing device according to claim 1, characterized in that, The horizontal guide assembly includes a slide block with rollers at the bottom. The slide block is slidably disposed in a slide hole via the rollers. A first guide rod is fixedly disposed in the slide hole. The slide block is slidably connected to the first guide rod via a first ear plate. A first spring is sleeved on the surface of the first guide rod. The two ends of the first spring are fixedly connected to the corresponding first ear plate and the inner wall of the slide hole, respectively.

7. The wind turbine flange bolt hole processing device according to claim 6, characterized in that, The vertical guide assembly includes a slide plate slidably mounted on a slide block, a guide roller rotatably mounted on the upper side of the slide plate, a second guide rod fixedly mounted on the lower side of the slide plate, the slide block being slidably connected to the second guide rod via a second ear plate, a second spring being sleeved on the surface of the second guide rod, and the two ends of the second spring being fixedly connected to the corresponding second ear plate and the lower side of the slide plate, respectively.

8. The wind turbine flange bolt hole processing device according to claim 1, characterized in that, The internal support assembly includes a hydraulic rod fixedly mounted on the upper side of the support platform, and the end of the telescopic section of the hydraulic rod is fixedly connected to a pressure block via a connecting shaft.

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