Wind turbine generator blade flange dislocation adjusting tool

Abstract

The invention discloses a blade flange dislocation adjusting tool for a wind turbine generator, which belongs to the technical field of assembly equipment and comprises a counterweight seat. The blade root positioning assembly is arranged on the counterweight seat; the connecting column is universally connected to one axial end of the counterweight seat; a flange inner ring positioning assembly is arranged at one end, far away from the counterweight seat, of the connecting column; and the centering adjusting assembly is arranged on the connecting column and is used for driving the connecting column to swing until the connecting column and the counterweight seat are in a coaxial state. According to the method, the balance weight seat is hoisted into the inner cavity of the blade root, then the balance weight seat is positioned in the inner cavity of the blade root through the blade root positioning assembly, the balance weight seat and the blade root are coaxial, then the flange inner ring positioning assembly abuts against the inner ring of the flange, and then the flange is installed on the flange inner ring positioning assembly; and then the centering adjusting assembly drives the connecting column to swing to be coaxial with the counterweight seat, so that the end face of the flange is parallel to the end face of the root of the blade.

Description

Technical Field

[0001] The invention belongs to the technical field of assembly equipment, and in particular relates to a wind turbine blade flange misalignment adjustment tool. Background Art

[0002] The blade root of the wind turbine generator set (hereinafter referred to as the blade root) is connected to the wind turbine generator set through a flange. The blade root is cylindrical and a plurality of studs are evenly installed on the end face. When the flange is assembled with the blade root, the blade is placed in a workshop or on a horizontal surface, and then the flange is lifted by a lifting device, and then the mounting holes on the flange are aligned with the studs at the blade root, and then the flange is moved toward the blade root, and the studs are inserted into the mounting holes of the flange to connect the flange and the blade root. When the flange is lifted, the mounting holes on the flange may not correspond one-to-one with the studs at the blade root, that is, misalignment occurs. As a result, during assembly, it is necessary to use manpower or external equipment to rotate the blade or flange so that the studs and the mounting holes can correspond one-to-one. This assembly method makes the efficiency low.

[0003] Therefore, after searching, Chinese patent publication number CN114952271A discloses a wind turbine blade flange misalignment adjustment tool (IPC classification number B23P19 / 10), including a support rod, a flange alignment component, a positioning shaft and a stud correction frame, a flange alignment component is provided at each end of the support rod, a sleeve is provided on the side of the triangular frame in the flange alignment component, and the sleeve is sleeved on the support rod, and the three guide rails on the triangular frame are respectively equipped with sliding frames, and the rotating shaft is rotatably installed on the triangular frame, wherein the end of the rotating shaft extends into the support rod, and the driving component is arranged on the triangular frame, and a positioning shaft is provided on the sliding frame in one flange alignment component, and a stud correction frame is provided on the sliding frame in the other flange alignment component. The sliding frame is driven to spread outward by the driving component, so that the positioning shaft can be inserted into the flange on the blade frame, and the stud correction frame supports the studs on the blade, thereby realizing the correction of the blade flange, so that the blade flange and the blade frame flange are arranged concentrically.

[0004] In the above-mentioned prior art, the mounting hole on the flange and the stud at the blade root are aligned by rotating the flange. However, since the blades are often placed on the ground or other horizontal surfaces, and the outer contour of the blades is irregular, after the blades are placed on the ground or other horizontal surfaces, the end face of the blade root is not necessarily perpendicular to the ground or the horizontal surface, or the axial direction of the blade root is not necessarily parallel to the ground or the horizontal surface. The bracket in the prior art is placed on the ground or the horizontal surface, which causes the flange end face to be not parallel to the end face of the blade root when the flange is assembled by the bracket, and may be tilted up and down and / or left and right. As a result, when the mounting hole on the flange is plugged into and assembled with the stud, the surface of the stud exerts a large extrusion force on the inner wall of the mounting hole, thereby affecting the assembly of the flange and the blade, and may even cause the stud to be squeezed and bent, affecting normal use. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and provide a wind turbine blade flange misalignment adjustment tool.

[0006] The technical solution adopted to solve the above technical problems is: a wind turbine blade flange misalignment adjustment tool, comprising:

[0007] Counterweight seat;

[0008] A blade root positioning assembly provided on the counterweight seat;

[0009] A connecting column universally rotatably connected to one axial end of the counterweight seat, wherein a flange inner ring positioning assembly is provided at one end of the connecting column away from the counterweight seat;

[0010] A centering adjustment component is arranged on the connecting column, and the centering adjustment component is used to drive the connecting column to swing to a coaxial state with the counterweight seat.

[0011] Through the above technical scheme, the counterweight seat is hoisted into the inner cavity of the blade root, and then the blade root positioning assembly is used to position the counterweight seat in the inner cavity of the blade root, and the counterweight seat is coaxial with the blade root, and then the inner ring of the flange is tightened by the flange inner ring positioning assembly, and then the flange is installed on the flange inner ring positioning assembly, and then the connecting column is driven to swing to a coaxial state with the counterweight seat by the centering adjustment assembly, so that the end face of the flange is parallel to the end face of the blade root, regardless of whether the axis of the blade root is parallel to the ground or the horizontal placement surface, and also regardless of whether the blade Whether the end face of the blade root is tilted up and down or left and right, it can ensure that the flange end face is parallel to the end face of the blade root. In addition, when the flange is hoisted to the flange inner ring positioning assembly, the end of the connecting column is universally connected with the end of the counterweight seat, so that the connecting column can remain parallel to the ground. Therefore, the hoisting difficulty is relatively small, and the flange inner ring positioning assembly will not cause the flange to swing greatly when positioning and clamping the flange, thereby causing the flange to tilt on the flange inner ring positioning assembly, affecting the rapid clamping and positioning of the flange by the flange inner ring positioning assembly.

[0012] Furthermore, the blade root positioning assembly includes a plurality of cylinder brackets fixedly connected to the periphery of the counterweight seat in an axial array along the counterweight seat, a cylinder is mounted on the cylinder bracket, the cylinder drive is connected to a clamping part, and the movement direction of the clamping part is perpendicular to the axial direction of the counterweight seat.

[0013] Through the above technical solution, the cylinder drives the pressing part to move in a direction away from the counterweight seat, so that the pressing part can press against the inner cavity wall of the blade root, thereby positioning the counterweight seat in the inner cavity of the blade root and making the counterweight seat coaxial with the blade root.

[0014] Furthermore, the abutting portion is cylindrical, and the axial direction of the abutting portion is parallel to the axial direction of the counterweight seat.

[0015] Through the above technical solution, when the clamping part contacts the inner cavity wall of the blade root, the contact form is a linear contact form, reducing the influence of the surface quality of the inner cavity wall of the blade root on the clamping part, thereby allowing the counterweight seat to maintain a coaxial state with the blade root.

[0016] Furthermore, a ball head is coaxially fixedly connected to the end of the connecting column, and a spherical groove for the ball head to be embedded in the end of the counterweight seat is opened, and the ball head is universally rotatable in the spherical groove.

[0017] Through the above technical solution, the ball head can be universally rotated in the spherical groove, so that the end of the connecting column and the counterweight seat can be universally rotatably connected.

[0018] Furthermore, the centering adjustment assembly includes a fixed baffle, which is coaxially fixed to one end of the counterweight seat adjacent to the connecting column, and a plurality of mounting plates are fixed to the periphery of the connecting column in an axial array along the connecting column, and an adjusting cylinder is installed on the surface of the mounting plate, and the adjusting cylinder is driven and connected to a pressure block, and one end face of the pressure block adjacent to the fixed baffle is perpendicular to the axial direction of the counterweight seat.

[0019] Through the above technical solution, the adjusting cylinder drives the pressure block to move toward the fixed baffle, so that the end face of the pressure block can be tightly pressed against the end face of the fixed baffle, thereby causing the connecting column to be subjected to force, so that the connecting column can swing to a coaxial state with the counterweight seat.

[0020] Furthermore, the flange inner ring positioning assembly includes a support column, which is coaxially fixed to the end of the connecting column away from the counterweight seat, and the support column is slidably mounted with a sliding seat on the periphery, and the sliding seat is fixed with a plurality of cylinder brackets in an axial array along the periphery of the sliding seat, and a clamping cylinder is installed on the cylinder bracket, and the clamping cylinder is driven and connected to a roller assembly.

[0021] Through the above technical solution, the flange is hoisted and moved laterally so that the support column enters the inner ring of the flange, and then the clamping cylinder drives the roller assembly to move toward the inner wall of the inner ring of the flange, so that the periphery of the roller assembly rolls in contact with the inner ring wall of the flange, thereby clamping the inner ring of the flange. In addition, the inner ring of the flange can rotate freely around the periphery of the roller assembly.

[0022] Furthermore, a translation cylinder is installed at one end of the support column away from the connecting column through a pad, a sliding block is slidably engaged in the inner hole of the support column, the sliding block is drivingly connected to the translation cylinder, two first plug rods are fixedly connected to the periphery of the sliding block, and a first waist-shaped hole is opened at the periphery of the support column for the first plug rod to pass freely, and one end of the first plug rod passing through the support column is fixedly connected to the inner hole wall of the sliding seat.

[0023] Through the above technical solution, the sliding block is driven by the translation cylinder to slide in the inner hole of the support column, and then the first insertion rod drives the sliding seat to slide around the periphery of the support column, so that the flange clamped and positioned by the roller shaft assembly can be driven to move toward the root end face of the blade until the flange end face and the root end face of the blade are abutted.

[0024] Furthermore, the roller shaft assembly includes a bracket, which is driven and connected to the clamping cylinder, and the outer walls on both sides of the bracket are rotatably penetrated by a pin shaft, the axial direction of the pin shaft is parallel to the movement direction of the sliding seat on the support column, and the circumference of the pin shaft is sleeved with a reducing expansion shaft, and the reducing expansion shaft is fixedly connected to the pin shaft, and the reducing expansion shaft is coaxially provided with a special-shaped hole on one end face of the reducing expansion shaft facing the counterweight seat, and the special-shaped hole includes a straight hole, a tapered hole and a sliding hole connected end to end in the direction away from the counterweight seat, and the aperture of the tapered hole increases successively in the direction away from the straight hole, and a plurality of reducing notches that penetrate the special-shaped holes are provided on the circumference of the reducing expansion shaft, and the pin shaft is provided with a reducing unit for driving the reducing expansion shaft to produce elastic expansion deformation so that the outer diameter of the reducing expansion shaft is consistent throughout.

[0025] Through the above technical solution, when the end face of the variable diameter expansion shaft approaches the end face of the blade root, the variable diameter expansion shaft is driven by the variable diameter unit to elastically contract and deform toward one end of the counterweight seat, so that the outer diameter of the variable diameter expansion shaft is reduced, thereby preventing the variable diameter expansion shaft from scraping the inner cavity wall of the blade root during the abutment between the flange and the end face of the blade root.

[0026] Furthermore, both axial ends of the pin shaft are provided with outward-turned annular flanges, and the end faces of the annular flanges are in sliding contact with the surface of the bracket.

[0027] Through the above technical solution, the annular flanges at both ends of the pin shaft limit the pin shaft, so that the pin shaft will not fall off the bracket.

[0028] Furthermore, the variable diameter unit includes a finger cylinder, which is installed on one of the annular flange end faces, and the pin shaft is coaxially provided with a through hole, and an adjusting slider is slidably mounted in the through hole, the finger cylinder is drivingly connected to the adjusting slider, a sliding portion is coaxially slidably engaged in the sliding hole, and a conical portion is coaxially fixed to one end of the sliding portion facing the conical hole, the sliding portion and the conical portion are slidably mounted on the periphery of the pin shaft, and the conical portion is used in conjunction with the conical hole, a second plug rod is fixed to the outer wall of the adjusting slider, and a second waist-shaped hole is provided on the periphery of the pin shaft for the second plug rod to pass freely, and one end of the second plug rod that passes through the pin shaft is penetrated into the sliding portion.

[0029] Through the above technical solution, the finger cylinder drives the adjustment slider to move, so that the second insertion rod drives the sliding part to slide in the sliding hole. When sliding, it drives the tapered part to slide in the tapered hole, thereby causing the variable diameter expansion shaft to produce elastic expansion deformation or elastic contraction deformation toward one end of the counterweight seat.

[0030] The beneficial effects of the present invention are as follows:

[0031] 1. In the present invention, the counterweight seat is hoisted into the inner cavity of the blade root, and then the blade root positioning assembly is used to position the counterweight seat in the inner cavity of the blade root, and the counterweight seat is coaxial with the blade root, and then the inner ring of the flange is pressed against the inner ring of the flange by the flange inner ring positioning assembly, and then the flange is installed on the flange inner ring positioning assembly, and then the connecting column is driven to swing to a coaxial state with the counterweight seat by the centering adjustment assembly, so that the end face of the flange is parallel to the end face of the blade root, and regardless of whether the axis of the blade root is parallel to the ground or the horizontal placement surface, and regardless of whether the blade Whether the root end face is tilted up and down or left and right, the flange end face and the blade root end face can be ensured to be parallel. In addition, when the flange is hoisted to the flange inner ring positioning assembly, the end of the connecting column is universally connected to the end of the counterweight seat, so that the connecting column can be kept parallel to the ground, so the hoisting difficulty is relatively small, and the flange inner ring positioning assembly will not cause the flange to swing greatly when positioning and clamping the flange, thereby causing the flange to tilt on the flange inner ring positioning assembly, affecting the rapid clamping and positioning of the flange by the flange inner ring positioning assembly;

[0032] 2. In the present invention, the pressure block is driven by the adjusting oil cylinder to move toward the fixed baffle, so that the end face of the pressure block can be tightly pressed against the end face of the fixed baffle, and then the connecting column is subjected to a force, so that the connecting column can swing to a state coaxial with the counterweight seat;

[0033] 3. In the present invention, when the end face of the variable diameter expansion shaft approaches the end face of the blade root, the variable diameter expansion shaft is driven by the variable diameter unit to elastically contract toward one end of the counterweight seat, so that the outer diameter of the variable diameter expansion shaft is reduced, thereby preventing the variable diameter expansion shaft from scraping the inner cavity wall of the blade root during the process of the flange and the end face of the blade root abutting against each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of a wind turbine blade flange misalignment adjustment tooling according to an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 Schematic diagram of the positional relationship of the first perspective;

[0036] Figure 3 yes Figure 1 Schematic diagram of the positional relationship of the second perspective;

[0037] Figure 4 yes Figure 2 The schematic diagram of the positional relationship of the counterweight seat, the oil cylinder and the abutting part is omitted;

[0038] Figure 5 yes Figure 4 Schematic diagram of the explosion decomposition of the structure;

[0039] Figure 6It is a schematic diagram of the positional relationship of the bracket, the variable diameter expansion shaft and the finger cylinder after being assembled in the embodiment of the present invention;

[0040] Figure 7 yes Figure 6 Schematic diagram of the positional relationship after the middle part of the structure is cut open;

[0041] Figure 8 yes Figure 6 Schematic diagram of the explosion decomposition of the structure;

[0042] Fig. 9 It is a schematic structural diagram of the variable diameter expansion shaft in an embodiment of the present invention when it is in an elastic expansion deformation state;

[0043] Fig.10 yes Fig. 9 Schematic diagram of the positional relationship of the structure after it is cut open.

[0044] 1. Adjusting cylinder; 2. Counterweight seat; 3. Fixed baffle; 4. Connecting column; 5. Cylinder; 6. Tightening part; 7. Cylinder bracket; 8. Pressure block; 9. Variable diameter expansion shaft; 10. Finger cylinder; 11. Cylinder bracket; 12. Clamping cylinder; 13. Support column; 14. Translation cylinder; 15. Sliding seat; 16. Bracket; 17. Ball head; 18. Mounting plate; 19. First waist-shaped hole; 20. First plug rod; 21. Sliding block; 22. Sliding part; 23. Pin shaft; 24. Adjusting slider; 25. Second plug rod; 26. Conical part; 27. Variable diameter notch; 28. Annular flange; 29. ​​Second waist-shaped hole; 30. Straight hole; 31. Sliding hole; 32. Conical hole. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0046] like Figure 1-Figure 10 As shown, this embodiment provides a wind turbine blade flange misalignment adjustment tool, including a counterweight seat 2 with a cylindrical outer contour, three L-shaped oil cylinder brackets 7 are fixedly connected to the periphery of the counterweight seat 2 in an axial array, the vertical section of the oil cylinder bracket 7 is fixedly connected to the periphery of the counterweight seat 2, and the horizontal section thereof is vertically installed with an oil cylinder 5, the telescopic rod of the oil cylinder 5 passes through the horizontal section and is fixedly connected with a tightening portion 6, the outer contour of the tightening portion 6 is cylindrical, and the axial direction of the tightening portion 6 is parallel to the axial direction of the counterweight seat 2, the three oil cylinders 5 are of the same model and are synchronously moved, so that when the three oil cylinders 5 are synchronously started, the three tightening portions 6 can be driven to synchronously move toward the radial outer side of the counterweight seat 2;

[0047] A spherical groove is coaxially provided at one axial end of the counterweight seat 2, and a ball head 17 is embedded in the spherical groove. The ball head 17 can be universally rotated in the spherical groove. In addition, a connecting column 4 is fixedly connected to the periphery of the ball head 17. The ball head 17 is universally rotated in the spherical groove, so that the connecting column 4 is universally rotatably connected to the end of the counterweight seat 2. A fixed baffle 3 is coaxially fixedly connected to one end of the counterweight seat 2 with the spherical groove. The outer diameter of the fixed baffle 3 is larger than the outer diameter of the counterweight seat 2. In addition, preferably, the outer diameter of the fixed baffle 3 can be set to at least the outer diameter of the wind turbine blade. The connecting column 4 is half of the inner diameter of the root of the plate. One end of the connecting column 4 away from the ball head 17 is fixedly connected with three mounting plates 18. The three mounting plates 18 are arranged in an axial array along the connecting column 4. The surface of each mounting plate 18 is horizontally mounted with an adjusting oil cylinder 1. The end of the telescopic rod of the adjusting oil cylinder 1 is fixedly connected with a pressure block 8. The pressure block 8 is used in conjunction with the fixed baffle 3. When the connecting column 4 and the counterweight seat 2 are in a coaxial state, the end face of the pressure block 8 facing the fixed baffle 3 is perpendicular to the axial direction of the counterweight seat 2, and at this time, the end face of the fixed baffle 3 is parallel to the end face of the pressure block 8.

[0048] The end of the connecting column 4 away from the ball head 17 is coaxially fixed with the support column 13, and the periphery of the support column 13 is slidably covered with a sliding seat 15 (the outer contour of the sliding seat 15 is annular), and the periphery of the sliding seat 15 is fixed with three cylinder brackets 11 in an array along its own axial direction, and a hollow groove is provided on the surface of the cylinder bracket 11, and a clamping cylinder 12 is vertically installed in the hollow groove on the cylinder bracket 11, and a bracket 16 is fixed to one end of the cylinder rod of the clamping cylinder 12 passing through the cylinder bracket 11, and the bracket 16 is driven by the clamping cylinder 12 to move radially along the support column 13, and a pin 23 is rotatably penetrated on the outer walls on both sides of the bracket 16, and the axial direction of the pin 23 is parallel to the movement direction of the sliding seat 15 on the support column 13;

[0049] The end of the support column 13 away from the connecting column 4 is connected with a pad, and a translation cylinder 14 is installed on the pad. A sliding block 21 is slidably engaged in the inner hole of the support column 13, and the sliding block 21 is drivingly connected to the translation cylinder 14. Two first plug rods 20 are fixedly connected to the periphery of the sliding block 21. A first waist-shaped hole 19 is opened on the periphery of the support column 13 for the first plug rod 20 to pass freely. One end of the first plug rod 20 passing through the support column 13 is fixedly connected to the inner hole wall of the sliding seat 15. In this way, the cylinder rod of the translation cylinder 14 is extended and retracted, thereby driving the sliding block 21 to slide in the inner hole of the support column 13. When the sliding block 21 slides, it synchronously drives the first plug rod 20 to move, and the end of the first plug rod 20 is fixedly connected to the sliding seat 15, thereby driving the sliding seat 15 to slide around the periphery of the support column 13. In addition, a hook can be installed on the periphery of the support column 13 or one of the mounting plates 18 to facilitate external lifting equipment to lift the counterweight seat 2 and the support column 13 through the hook;

[0050] A reducing expansion shaft 9 is sleeved on the periphery of the pin shaft 23, and the reducing expansion shaft 9 is fixedly connected to the periphery of the pin shaft 23. In addition, a special-shaped hole is coaxially opened on the end face of the reducing expansion shaft 9 facing the counterweight seat 2. The special-shaped hole includes a straight hole 30, a tapered hole 32 and a sliding hole 31 connected end to end in the direction away from the counterweight seat 2. The aperture of the tapered hole 32 increases in sequence in the direction away from the straight hole 30. A plurality of reducing notches 27 penetrating the special-shaped holes are opened on the periphery of the reducing expansion shaft 9. By providing the reducing notches 27, the end of the reducing expansion shaft 9 facing the counterweight seat 2 can produce elastic expansion deformation and elastic contraction deformation. A through hole is coaxially opened on the end face of the pin shaft 23. An annular flange 28 made into an outward-turned shape is respectively provided at both axial ends of the pin shaft 23. The end face of the annular flange 28 is in sliding contact with the surface of the bracket 16. In addition, when the reducing expansion shaft 9 is in an elastic expansion deformation state, the aperture of the straight hole 30 is larger than the outer diameter of the pin shaft 23.

[0051] The finger cylinder 10 is horizontally mounted on the end surface of one of the annular flanges 28, and a through hole is coaxially opened on the pin shaft 23, and an adjusting slider 24 is slidably mounted in the through hole. The finger cylinder 10 is drivingly connected to the adjusting slider 24, and a sliding portion 22 is coaxially slidably engaged in the sliding hole 31. A conical portion 26 is coaxially fixedly connected to one end of the sliding portion 22 facing the conical hole 32. The sliding portion 22 and the conical portion 26 are slidably mounted on the periphery of the pin shaft 23, and the conical portion 26 is used in conjunction with the conical hole 32. A second plug rod 25 is fixedly connected to the outer wall of the adjusting slider 24, and a second waist-shaped hole 29 is opened on the periphery of the pin shaft 23 for the second plug rod 25 to pass freely. One end of the second plug rod 25 that passes through the pin shaft 23 is inserted into the sliding portion 22, and is extended and retracted by the cylinder rod of the finger cylinder 10 to drive the adjusting slider 24 to move. The pin shaft 23 slides in the through hole, and when the adjusting slider 24 slides, the second insertion rod 25 can synchronously drive the sliding part 22 to move, so that the sliding part 22 slides in the sliding hole 31, and the tapered part 26 slides in the tapered hole 32. When the tapered part 26 moves in the tapered hole 32 toward the counterweight seat 2, an extrusion force is generated on the inner wall of the tapered hole 32, so that the variable diameter expansion shaft 9 produces elastic expansion deformation. At this time, the outer diameter of the variable diameter expansion shaft 9 is consistent throughout the body. On the contrary, when the tapered part 26 moves in the tapered hole 32 in the direction away from the counterweight seat 2, the extrusion force on the inner wall of the tapered hole 32 disappears. Under the action of the deformation recovery ability of the variable diameter expansion shaft 9 itself, the variable diameter expansion shaft 9 will produce elastic contraction deformation, so that the outer diameter of the end of the variable diameter expansion shaft 9 facing the counterweight seat 2 is larger than the outer diameter of the other end.

[0052] The working principle of this embodiment is as follows:

[0053] The blade is placed on the floor of the workshop, and the device is lifted by a lifting device. It is best to set the center of gravity of the device on the outer wall of the connecting column 4 or the supporting column 13 close to the connecting column 4. In this way, when the device is lifted, the end of the supporting column 13 away from the connecting column 4 will not swing downward, so that the flange can pass smoothly. Then another lifting device is used to lift the flange to be assembled, and the flange passes through the end of the supporting column 13 away from the connecting column 4 until the inner ring of the flange is located outside the three reducing expansion shafts 9, and then the three clamping cylinders 12 are started, and the cylinder rods of the clamping cylinders 12 are extended to drive the bracket 16 to move away from the supporting column 13, so that the reducing expansion shaft 9 moves toward the inner wall of the inner ring of the flange, until the outer wall of the reducing expansion shaft 9 is pressed against the inner wall of the inner ring of the flange. At this time, the inner ring of the flange can be automatically centered by the forces of the three reducing expansion shafts 9 in different directions, and is clamped and positioned by the three reducing expansion shafts 9. Then the device and the flange are moved together by the above-mentioned lifting equipment, so that the counterweight seat 2 enters the inner cavity of the blade root;

[0054] The three oil cylinders 5 are started synchronously, and the telescopic rods of the three oil cylinders 5 synchronously drive the three pressing parts 6 to move toward the inner cavity wall of the blade root, so that the pressing part 6 can press against the inner cavity wall of the blade root. After pressing, the lifting equipment is removed, and then the three adjusting oil cylinders 1 are started again. The three adjusting oil cylinders 1 are of the same model and move synchronously, so that the three pressure blocks 8 move toward the direction of the fixed baffle plate 3 at the same time, and the three pressure blocks 8 press against the fixed baffle plate 3 together, so that the connecting column 4 can rotate in the spherical groove through the ball head 17, so that the end face of the fixed baffle plate 3 and the end faces of the three pressure blocks 8 are parallel and pressed, so that the connecting column 4, the supporting column 13 and the counterweight seat 2 can be coaxial. At this time, no matter whether the end face of the blade root is perpendicular to the ground, or the end face of the blade root is tilted up and down and\or left and right relative to the flange end face, the end face of the blade root can be adjusted to be parallel to the flange end face;

[0055] Then start the translation cylinder 14, the translation cylinder 14 slowly drives the sliding block 21 to slide in the inner hole of the support column 13, and the sliding block 21 drives the first plug rod 20 to move synchronously when sliding, and the end of the first plug rod 20 is fixedly connected to the sliding seat 15, so that the sliding seat 15 can be driven to slide on the periphery of the support column 13, so that the flange can gradually approach the root end face of the blade. During the approaching process, the staff can visually check whether the mounting holes on the flange correspond to the studs on the root end face of the blade. Then, the flange can be rotated on the periphery of the three reducing expansion shafts 9 by hand, so that the mounting holes on the flange are coaxial with the studs on the root end face of the blade or can be close to being coaxial. Since there are many mounting holes on the flange and the angles between them are small, the angular stroke required for the flange to rotate is small, and it can be operated by manpower without the help of external equipment. In addition, at this time, the axial direction of the mounting holes on the flange is parallel to the axial direction of the studs on the root end face of the blade.

[0056] When the end of the variable diameter expansion shaft 9 is about to contact the inner cavity wall of the blade root, the mounting hole on the flange has been assembled with the stud on the end face of the blade root, but the flange end face has not abutted against the blade root end face. Therefore, in order to avoid the peripheral edge of the variable diameter expansion shaft 9 scraping the inner cavity wall of the blade root when the flange end face abuts against the blade root end face, resulting in an increase in the resistance of the flange moving toward the blade root, at this time, the finger cylinder 10 is started, and the cylinder rod of the finger cylinder 10 is shortened (refer to Figure 7 ), thereby causing the adjusting slider 24 to move in a direction away from the counterweight seat 2, so that the cone 26 moves in the direction of the cone hole 32 toward the sliding hole 31, and the extrusion force of the cone 26 on the inner wall of the cone hole 32 disappears, thereby causing the end of the variable diameter expansion shaft 9 toward the counterweight seat 2 (or toward the end face of the blade root) to produce elastic contraction deformation, and the outer diameter of the end is reduced, so that when the flange end face abuts against the end face of the blade root, the peripheral edge of the variable diameter expansion shaft 9 will not scrape the inner cavity wall of the blade root, and the other end of the variable diameter expansion shaft 9 is located outside the inner cavity of the blade root and will not scrape the inner cavity wall of the blade root;

[0057] When the flange end face and the blade root end face are in contact with each other, the three clamping cylinders 12 are started again, and the cylinder rods of the clamping cylinders 12 are shortened, thereby driving the three variable diameter expansion shafts 9 to move toward the direction of the support column 13, and then the device is lifted by external lifting equipment, and the three oil cylinders 5 are started again, and the telescopic rods of the oil cylinders 5 are shortened, so that the clamping part 6 moves toward the counterweight seat 2 and is separated from the clamping state with the inner cavity wall of the blade root. The finger cylinder 10 also begins to reset, so that the end of the variable diameter expansion shaft 9 toward the counterweight seat 2 is elastically expanded and deformed again, and the lifting equipment lifts the device away again, thereby completing the assembly of the wind turbine blade and flange.

[0058] It should also be noted that, since a reducing notch 27 is provided on the periphery of the reducing expansion shaft 9, when the inner ring surface of the flange just contacts the reducing notch 27, the inner ring of the flange will be slightly displaced, but will not cause a large displacement between the inner ring of the flange and the root end face of the blade, and will not affect the assembly of the flange and the root end face of the blade. Assuming that the reducing notch 27 contacts the inner ring of the flange, the flange can be lifted again by a lifting equipment, and then the worker manually rotates the reducing expansion shaft 9 so that when the inner ring of the flange contacts the periphery of the reducing expansion shaft 9 again, it will not contact the reducing notch 27.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A wind turbine blade flange misalignment adjustment tool, characterized in that: include: Counterweight seat (2); A blade root positioning assembly provided on the counterweight seat (2); A connecting column (4) universally rotatably connected to one axial end of the counterweight seat (2), wherein the end of the connecting column (4) away from the counterweight seat (2) is provided with a flange inner ring positioning assembly; A centering adjustment component is arranged on the connecting column (4), and the centering adjustment component is used to drive the connecting column (4) to swing to a coaxial state with the counterweight seat (2).

2. The wind turbine blade flange misalignment adjustment tool according to claim 1, characterized in that: The blade root positioning assembly comprises a plurality of cylinder brackets (7) fixedly connected to the periphery of the counterweight seat (2) in an axial array along the counterweight seat (2), a cylinder (5) being mounted on the cylinder bracket (7), the cylinder (5) being drivingly connected to a clamping portion (6), and a movement direction of the clamping portion (6) being perpendicular to the axial direction of the counterweight seat (2).

3. The wind turbine blade flange misalignment adjustment tool according to claim 2, characterized in that: The abutting portion (6) is cylindrical, and the axial direction of the abutting portion (6) is parallel to the axial direction of the counterweight seat (2).

4. The wind turbine blade flange misalignment adjustment tool according to claim 1, characterized in that: A ball head (17) is coaxially fixedly connected to the end of the connecting column (4), and a spherical groove for the ball head (17) to fit into is formed at the end of the counterweight seat (2), and the ball head (17) is universally rotatable in the spherical groove.

5. The wind turbine blade flange misalignment adjustment tool according to claim 1, characterized in that: The centering adjustment component comprises a fixed baffle (3), the fixed baffle (3) being coaxially fixed to one end of the counterweight seat (2) adjacent to the connecting column (4), a plurality of mounting plates (18) being fixed to the periphery of the connecting column (4) in an axial array along the connecting column (4), an adjusting oil cylinder (1) being mounted on the surface of the mounting plate (18), the adjusting oil cylinder (1) being drivingly connected to a pressure block (8), a side end surface of the pressure block (8) adjacent to the fixed baffle (3) being axially perpendicular to the counterweight seat (2).

6. The wind turbine blade flange misalignment adjustment tool according to claim 1, characterized in that: The flange inner ring positioning assembly includes a support column (13), the support column (13) is coaxially fixed to the end of the connecting column (4) away from the counterweight seat (2), the support column (13) is slidably mounted with a sliding seat (15) on the periphery, and a plurality of cylinder brackets (11) are fixedly connected to the periphery of the sliding seat (15) in an axial array along the sliding seat (15), a clamping cylinder (12) is installed on the cylinder bracket (11), and the clamping cylinder (12) is drivingly connected to a roller assembly.

7. The wind turbine blade flange misalignment adjustment tool according to claim 6, characterized in that: The end of the support column (13) away from the connecting column (4) is installed with a translation cylinder (14) through a pad, and a sliding block (21) is slidably engaged in the inner hole of the support column (13). The sliding block (21) is drivingly connected to the translation cylinder (14), and two first insertion rods (20) are fixedly connected to the periphery of the sliding block (21). The periphery of the support column (13) is provided with a first waist-shaped hole (19) for the first insertion rod (20) to pass freely, and one end of the first insertion rod (20) passing through the support column (13) is fixedly connected to the inner hole wall of the sliding seat (15).

8. The wind turbine blade flange misalignment adjustment tool according to claim 6, characterized in that: The roller assembly comprises a bracket (16), the bracket (16) is drivingly connected to the clamping cylinder (12), and a pin (23) is rotatably passed through the outer walls of both sides of the bracket (16), the axial direction of the pin (23) is parallel to the movement direction of the sliding seat (15) on the support column (13), a reducing expansion shaft (9) is sleeved on the periphery of the pin (23), and the reducing expansion shaft (9) is fixedly connected to the pin (23), and the reducing expansion shaft (9) is coaxially opened on one side end face of the counterweight seat (2). A special-shaped hole is provided, and the special-shaped hole includes a straight hole (30), a tapered hole (32) and a sliding hole (31) connected end to end in a direction away from the counterweight seat (2), and the diameter of the tapered hole (32) increases in a direction away from the straight hole (30). The periphery of the variable diameter expansion shaft (9) is provided with a plurality of variable diameter notches (27) penetrating the special-shaped hole, and the pin shaft (23) is provided with a variable diameter unit for driving the variable diameter expansion shaft (9) to produce elastic expansion deformation so that the outer diameter of the variable diameter expansion shaft (9) is consistent throughout.

9. The wind turbine blade flange misalignment adjustment tool according to claim 8, characterized in that: The pin shaft (23) is provided with an outwardly turned annular flange (28) at both axial ends, and the end surface of the annular flange (28) is in sliding contact with the surface of the bracket (16).

10. The wind turbine blade flange misalignment adjustment tool according to claim 9, characterized in that: The variable diameter unit comprises a finger cylinder (10), the finger cylinder (10) is mounted on one of the end faces of the annular flange (28), the pin shaft (23) is coaxially provided with a through hole, an adjusting slider (24) is slidably mounted in the through hole, the finger cylinder (10) is drivingly connected to the adjusting slider (24), a sliding portion (22) is coaxially slidably mounted in the sliding hole (31), a conical portion (26) is coaxially fixedly connected to one end of the sliding portion (22) facing the conical hole (32), the sliding portion (22) and the conical portion (26) are slidably mounted on the periphery of the pin shaft (23), the conical portion (26) and the conical hole (32) are used in conjunction with each other, a second plug rod (25) is fixedly connected to the outer wall of the adjusting slider (24), the pin shaft (23) is coaxially provided with a through hole, an adjusting slider (24) is slidably mounted in the through hole, an adjusting slider (24) is drivingly connected to the adjusting slider (24), a sliding portion (22) is coaxially slidably mounted in the sliding hole (31), a conical portion (26) is coaxially fixedly connected to one end of the sliding portion (22) facing the conical hole (32), the sliding portion (22) and the conical portion (26) are slidably mounted on the periphery of the pin shaft (23), the conical portion (26) and the conical hole (32) are used in conjunction with each other, a second plug rod (25) is fixedly connected to the outer wall of the adjusting slider (24), the pin shaft (23) is coaxially provided with a through hole, and a second plug rod (25) is fixedly connected to the outer wall of the adjusting slider (24), and the second plug rod (25) is fixedly connected to the outer wall of the adjusting slider (24). A second waist-shaped hole (29) is provided on the periphery of the shaft (23) for the second insertion rod (25) to freely pass through. One end of the second insertion rod (25) that passes through the pin shaft (23) is inserted into the sliding portion (22).

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