A positioning tool for welding wind turbine blades

Abstract

The present invention relates to the field of blade welding technology, specifically to a positioning tool for welding wind power generation blades, comprising: a support table, the top of which is symmetrically and slidably mounted with two bearing platforms, the rear ends of which are fixedly connected with a counterweight box, and the front end of which is also fixedly mounted with a PLC controller. The present invention can automatically fix the blade parts, improve the stability of blade welding, and ensure the welding effect of the blades. At the same time, the rubber anti-sliding block can avoid wear at the contact position between the blade and the clamping plate, and can realize automatic grasping and placement of the blades, which can reduce the labor burden of the staff, and can flip the blades at the bottom of the clamping plate, which is convenient for adjusting the angle of the blades and is conducive to the alignment of the blades. At the same time, the blades can be flipped during the welding process, which is convenient for the staff to weld at different positions of the blades, avoiding the staff from welding from the bottom of the blades, and improving the welding efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of blade welding, in particular to a positioning tool for welding wind power generation blades. Background Art

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and finally outputs alternating current. A wind turbine generally consists of a wind rotor, a generator (including a device), a stabiliser (tail), a tower, a speed limit safety mechanism and an energy storage device. The working principle of a wind turbine is relatively simple. The wind rotor rotates under the action of wind force, and it converts the kinetic energy of the wind into the mechanical energy of the wind rotor shaft. The generator rotates and generates electricity under the drive of the wind rotor shaft. In a broad sense, wind energy is also solar energy, so it can also be said that a wind turbine is a heat energy generator that uses the sun as a heat source and the atmosphere as a working medium.

[0003] As an important part of wind turbines, blades are used to capture wind and transmit wind power to the rotor axis. On modern 600 kW wind turbines, each rotor blade is about 20 meters long and is designed to look like an airplane wing. Large wind turbine blades are usually made of fiberglass. This material has the advantages of being lightweight, strong, and corrosion-resistant, making the blades harder and more durable. Small wind turbine blades are usually made of metal or fiberglass. When metal is used to make blades, the blades need to be welded.

[0004] The prior art has the following problems in the process of welding wind turbine blades: when welding small blades, it is costly to lift the blades with lifting equipment, and the docking of the blades is not easy to control. Manual docking of blades requires a lot of physical strength and time, which affects the welding efficiency, and the welding part is not easy to flip, which makes welding more difficult.

[0005] Therefore, a positioning tool for welding wind turbine blades is proposed. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a positioning tool for welding wind turbine blades.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A positioning tool for welding a wind turbine blade, comprising:

[0009] A support platform, wherein two bearing platforms are symmetrically and slidably mounted on the top of the support platform, a counterweight box is fixedly connected to the rear end of each bearing platform, and a PLC controller is also fixedly mounted on the front end of the support platform;

[0010] A support plate, the support plate is slidably mounted on the front end of the bearing platform, a mounting platform is fixedly mounted on the edge of the bottom end of the support plate, a connecting head is rotatably mounted on the mounting platform, and a connecting plate is fixedly connected to the bottom end of the connecting head;

[0011] A second movable opening groove, the second movable opening groove is arranged at the bottom end of the connecting plate, a transmission shaft is rotatably installed in the second movable opening groove, two second movable rings are symmetrically and slidably installed on the outer side of the transmission shaft, a clamping plate is fixedly connected to the bottom end of the second movable ring, a plurality of rubber anti-sliding blocks are evenly fixedly installed on the inner side of the clamping plate, and a conical plate is fixedly installed on the inner wall of the bottom end of the clamping plate;

[0012] A first movable opening groove, wherein the first movable opening groove is provided at the front end of the bearing platform, a threaded screw is rotatably installed in the first movable opening groove, a first movable ring is sleeved on the outer side of the threaded screw, a first threaded hole adapted to the threaded screw is provided at the center of the first movable ring, and the outer side of the first movable ring extends to the outside of the first movable opening groove and is fixedly connected to the side wall of the support plate;

[0013] The top of the connector is designed to be in an arc shape, and a plurality of latch teeth are evenly and fixedly installed on the top of the connector. A transmission gear is also rotatably installed on the bottom end of the support plate, and the transmission gear is meshed with the latch teeth. A third motor electrically connected to the PLC controller is also fixedly installed on the side wall of the support plate, and the output end of the third motor is fixedly connected to the central axis of the transmission gear.

[0014] Preferably, a second movable ring is fixedly installed on the top of the clamping plate, the second movable ring is sleeved on the transmission shaft, threaded strips are symmetrically fixedly installed on the outer walls at both ends of the transmission shaft, and a second threaded hole matching the threaded strip is opened at the center of the second movable ring.

[0015] Preferably, the bottom wall of the conical plate is parallel to the bottom wall of the ground, and the top wall of the conical plate is inclined upward.

[0016] Preferably, a second motor electrically connected to the PLC controller is fixedly mounted on the side wall of the connecting plate, and an output end of the second motor is fixedly connected to the central axis of the transmission shaft.

[0017] Through the above scheme, when the staff places the blade parts to be welded on the ground at the bottom end of the connecting plate, the second motor is started through the PLC controller, and the second motor can drive the transmission shaft to rotate in the second movable opening groove. When the transmission shaft rotates clockwise, the threaded strip on the outside of the transmission shaft passes through the second threaded hole at the center of the second movable ring to make the clamping plate slide toward the center of the connecting plate. At this time, the conical plate at the bottom end of the clamping plate can shovel up the blades to be welded during the closing process. When the clamping plate moves to the corresponding position, the clamping plate can clamp the blades and automatically fix the blades, which is convenient for welding the blades, improves the stability of blade welding, and ensures the welding effect of the blades. At the same time, the rubber anti-sliding block can protect both sides of the blades to avoid wear at the contact position between the blades and the clamping plate, which is beneficial to the safety of the blades. After the welding is completed, the second motor drives the transmission shaft to rotate counterclockwise. At this time, the clamping plate can slide to both sides of the connecting plate, and can automatically put down the welded blades, so as to realize automatic grabbing and placement of the blades, reduce the labor burden of the staff, and improve work efficiency.

[0018] Preferably, a first motor electrically connected to the PLC controller is fixedly mounted on the top of the support platform, and an output end of the first motor is fixedly connected to the central axis of the threaded screw.

[0019] Preferably, two slide rails are symmetrically fixedly installed on the top of the support platform, and the bottom ends of the bearing platform and the counterweight box are provided with slide grooves adapted to the slide rails.

[0020] Preferably, hydraulic telescopic rods are fixedly installed on both sides of the top of the support platform, and the extended ends of the hydraulic telescopic rods are fixedly connected to the side walls of the counterweight box.

[0021] Through the above scheme, the first motor can be started through the PLC controller, and the first motor can drive the threaded screw to rotate in the first movable opening groove. When the threaded screw rotates clockwise, the support plate can slide along the threaded screw to the top of the first movable opening groove through the first movable ring and the first threaded hole, and the blades clamped by the clamping plate at the bottom of the connecting plate can be slid upward, so that the blades can be moved to a suitable welding height, which is convenient for the staff to carry out welding work, and the two bearing platforms can be pushed along the slide rail to the middle position of the support platform through the hydraulic telescopic rod, so that the two blades to be welded can be contacted for welding. When the threaded screw rotates counterclockwise, the support plate can drive the connecting plate to slide downward, so that the welded blades can be moved to the ground, so that the welded blades can be placed on the ground.

[0022] Preferably, both ends of the connector are fixedly mounted with a rotating shaft, the connector is rotatably mounted on a mounting platform via the rotating shaft, an electric telescopic rod electrically connected to a PLC controller is also fixedly mounted on the top of the mounting platform, and an arc plate is fixedly mounted on the extended end of the electric telescopic rod.

[0023] Preferably, the arc-shaped plate fits with the top end of the connector, and limiting teeth meshing with the latch teeth are evenly and fixedly mounted on the bottom wall of the arc-shaped plate.

[0024] Through the above scheme, when in use, starting the third motor through the PLC controller can make the transmission gear rotate at the bottom end of the support plate. When the transmission gear rotates clockwise, the transmission gear can push the latch gear downward, so that the connecting plate at the bottom end of the connecting head can be flipped counterclockwise, and the blades at the bottom end of the clamping plate can be flipped, which is convenient for adjusting the angle of the blades and is beneficial to the alignment of the blades. At the same time, the blades can be flipped during the welding process, which is convenient for the staff to weld different positions of the blades, can reduce the difficulty of welding, avoid the staff from welding from the bottom end of the blades, and improve the welding efficiency. When the electric telescopic rod drives the limiting teeth at the bottom end of the arc plate to embed into the latch gear at the top end of the connecting head, the arc plate can fix the connecting head, which can avoid the weight of the blades driving the connecting head to flip downward during the welding process, can reduce the load on the output end of the third motor, and is beneficial to the use of the third motor.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The present invention starts the second motor through the PLC controller, and the second motor can drive the transmission shaft to rotate in the second active opening groove. When the transmission shaft rotates clockwise, the threaded strip on the outer side of the transmission shaft passes through the second threaded hole at the center of the second active ring to make the clamping plate slide toward the center of the connecting plate. At this time, the conical plate at the bottom end of the clamping plate can shovel up the blade to be welded during the closing process. When the clamping plate moves to the corresponding position, the clamping plate can clamp the blade and automatically fix the blade, which is convenient for welding the blade, can improve the stability of blade welding, can ensure the welding effect of the blade, and at the same time, the rubber anti-sliding block can protect both sides of the blade to avoid wear at the contact position between the blade and the clamping plate, which is beneficial to the safety of the blade. After welding is completed, the second motor drives the transmission shaft to rotate counterclockwise, and the clamping plate can slide to both sides of the connecting plate, can automatically put down the welded blade, can realize automatic grabbing and placement of the blade, can reduce the labor burden of the staff, and can improve work efficiency.

[0027] 2. The present invention can start the first motor through the PLC controller, and the first motor can drive the threaded screw to rotate in the first movable opening groove. When the threaded screw rotates clockwise, the support plate can slide toward the top of the first movable opening groove along the threaded screw through the first movable ring and the first threaded hole, and can slide the blades clamped by the clamping plate at the bottom of the connecting plate upward, so that the blades can be moved to a suitable welding height, which is convenient for the staff to perform welding work, and the two bearing platforms can be pushed along the slide rail to the middle position of the support platform through the hydraulic telescopic rod, so that the two blades to be welded can be contacted for welding. When the threaded screw rotates counterclockwise, the support plate can drive the connecting plate to slide downward, so that the welded blades can be moved to the ground, so that the welded blades can be placed on the ground.

[0028] 3. The present invention starts the third motor through the PLC controller to make the transmission gear rotate at the bottom end of the support plate. When the transmission gear rotates clockwise, the transmission gear can push the latch gear downward, so that the connecting plate at the bottom end of the connecting head can be flipped counterclockwise, and the blades at the bottom end of the clamping plate can be flipped, which is convenient for adjusting the angle of the blades and is beneficial to the alignment of the blades. At the same time, the blades can be flipped during the welding process, which is convenient for the staff to weld different positions of the blades, can reduce the welding difficulty, avoid the staff from welding from the bottom end of the blades, and improve the welding efficiency. When the electric telescopic rod drives the limiting teeth at the bottom end of the arc plate to embed into the latch gear at the top end of the connecting head, the arc plate can fix the connecting head, which can avoid the weight of the blades driving the connecting head to flip downward during the welding process, can reduce the load on the output end of the third motor, and is beneficial to the use of the third motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a positioning tool for welding wind turbine blades according to an embodiment of the present invention;

[0030] Figure 2 It is a schematic diagram of the partial cross-sectional structure of the top end of the support platform in an embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of the structure of the first motor output terminal in an embodiment of the present invention;

[0032] Figure 4 This is a schematic structural diagram of the bottom end of the support plate in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the cross-sectional structure of the lower end of the support plate in an embodiment of the present invention;

[0034] Figure 6 This is a schematic diagram of the structure of the second motor output terminal in an embodiment of the present invention;

[0035] Figure 7 This is a schematic diagram of the structure of the inner side of the clamping plate in an embodiment of the present invention;

[0036] Figure 8 This is a schematic diagram of the combined structure of the connecting plate and the supporting plate in an embodiment of the present invention;

[0037] Fig. 9 This is a schematic diagram of the structure of the connecting plate in an embodiment of the present invention;

[0038] Fig.10 Schematic diagram of the structure of the bottom end of the electric telescopic rod in an embodiment of the present invention.

[0039] In the figure: 1. support platform; 2. slide rail; 3. hydraulic telescopic rod; 4. counterweight box; 5. first movable opening slot; 6. bearing platform; 7. first motor; 8. threaded screw; 9. PLC controller; 10. connecting plate; 11. mounting platform; 12. connector; 13. support plate; 14. clamping plate; 15. electric telescopic rod; 16. second motor; 17. third motor; 18. first movable ring; 19. first threaded hole; 20. rotating shaft; 21. second movable opening slot; 22. transmission shaft; 23. latching tooth; 24. arc plate; 25. transmission gear; 26. threaded strip; 27. second threaded hole; 28. conical plate; 29. ​​rubber anti-sliding block; 30. second movable ring; 31. limiting tooth. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] Example: See Figures 1 to 10 , a positioning tool for welding wind turbine blades, comprising:

[0043] A support platform 1, two bearing platforms 6 are symmetrically and slidably mounted on the top of the support platform 1, the rear ends of the bearing platforms 6 are fixedly connected with a counterweight box 4, and a PLC controller 9 is also fixedly mounted on the front end of the support platform 1;

[0044] A support plate 13 is slidably mounted on the front end of the bearing platform 6, a mounting platform 11 is fixedly mounted on the edge of the bottom end of the support plate 13, a connector 12 is rotatably mounted on the mounting platform 11, and a connecting plate 10 is fixedly connected to the bottom end of the connector 12;

[0045] A second movable opening groove 21 is provided at the bottom end of the connecting plate 10, a transmission shaft 22 is rotatably mounted in the second movable opening groove 21, two second movable rings 30 are symmetrically slidably mounted on the outer side of the transmission shaft 22, a clamping plate 14 is fixedly connected to the bottom end of the second movable ring 30, a plurality of rubber anti-sliding blocks 29 are evenly fixedly mounted on the inner side of the clamping plate 14, and a conical plate 28 is fixedly mounted on the inner wall of the bottom end of the clamping plate 14;

[0046] A first movable opening slot 5, the first movable opening slot 5 is opened at the front end of the bearing platform 6, a threaded screw 8 is rotatably installed in the first movable opening slot 5, a first movable ring 18 is sleeved on the outer side of the threaded screw 8, a first threaded hole 19 adapted to the threaded screw 8 is opened at the center of the first movable ring 18, and the outer side of the first movable ring 18 extends to the outside of the first movable opening slot 5 and is fixedly connected to the side wall of the support plate 13;

[0047] The top of the connector 12 is designed to be in an arc shape, and a plurality of latch teeth 23 are evenly and fixedly installed on the top of the connector 12. A transmission gear 25 is also rotatably installed on the bottom end of the support plate 13, and the transmission gear 25 is meshed with the latch teeth 23. A third motor 17 electrically connected to the PLC controller 9 is also fixedly installed on the side wall of the support plate 13, and the output end of the third motor 17 is fixedly connected to the central axis of the transmission gear 25.

[0048] A second movable ring 30 is fixedly installed on the top of the clamping plate 14. The second movable ring 30 is sleeved on the transmission shaft 22. Threaded strips 26 are symmetrically fixedly installed on the outer walls of both ends of the transmission shaft 22. A second threaded hole 27 adapted to the threaded strip 26 is opened at the center of the second movable ring 30.

[0049] The bottom wall of the conical plate 28 is parallel to the bottom wall of the ground, and the top wall of the conical plate 28 is inclined upward.

[0050] A second motor 16 electrically connected to the PLC controller 9 is fixedly mounted on the side wall of the connecting plate 10 , and an output end of the second motor 16 is fixedly connected to the central axis of the transmission shaft 22 .

[0051] In this embodiment, when in use, after the staff places the blade parts to be welded on the ground at the bottom end of the connecting plate 10, the second motor 16 is started through the PLC controller 9, and the second motor 16 can drive the transmission shaft 22 to rotate in the second movable opening groove 21. When the transmission shaft 22 rotates clockwise, the threaded strip 26 on the outside of the transmission shaft 22 passes through the second threaded hole 27 at the center of the second movable ring 30 to make the clamping plate 14 slide toward the center of the connecting plate 10. At this time, the conical plate 28 at the bottom end of the clamping plate 14 can shovel up the blades to be welded during the closing process. When the clamping plate 14 moves to the corresponding position, the clamping The plate 14 can clamp the blades and automatically fix the blades, which is convenient for welding the blades, can improve the stability of blade welding, and can ensure the welding effect of the blades. At the same time, the rubber anti-sliding block 29 can protect both sides of the blades to avoid wear at the contact position between the blades and the clamping plate 14, which is beneficial to the safety of the blades. After welding is completed, the second motor 16 drives the transmission shaft 22 to rotate counterclockwise. At this time, the clamping plate 14 can slide to both sides of the connecting plate 10, and can automatically put down the welded blades, so as to realize automatic grabbing and placement of the blades, reduce the labor burden of the staff, and improve work efficiency.

[0052] As an embodiment of the present invention, refer to Figure 1-Figure 3 A first motor 7 electrically connected to a PLC controller 9 is fixedly mounted on the top of the carrier platform 6 , and an output end of the first motor 7 is fixedly connected to a central axis of a threaded screw 8 .

[0053] Two slide rails 2 are symmetrically fixedly installed on the top of the support platform 1, and the bottom ends of the bearing platform 6 and the counterweight box 4 are provided with slide grooves adapted to the slide rails 2.

[0054] Hydraulic telescopic rods 3 are fixedly installed on both sides of the top of the support platform 1, and the extended ends of the hydraulic telescopic rods 3 are fixedly connected to the side walls of the counterweight box 4.

[0055] In this embodiment, when in use, the first motor 7 can be started by the PLC controller 9, and the first motor 7 can drive the threaded screw 8 to rotate in the first movable opening groove 5. When the threaded screw 8 rotates clockwise, the support plate 13 can slide along the threaded screw 8 to the top of the first movable opening groove 5 through the first movable ring 18 and the first threaded hole 19, and the blade clamped by the clamping plate 14 at the bottom of the connecting plate 10 can slide upward, so that the blade can be moved to a suitable welding height, which is convenient for the staff to perform welding work, and the two bearing platforms 6 can be pushed along the slide rail 2 to the middle position of the support platform 1 through the hydraulic telescopic rod 3, so that the two blades to be welded can be contacted for welding. When the threaded screw 8 rotates counterclockwise, the support plate 13 can drive the connecting plate 10 to slide downward, so that the welded blade can be moved to the ground, so that the welded blade can be placed on the ground.

[0056] As an embodiment of the present invention, refer to Figure 8-Figure 10 A rotating shaft 20 is fixedly installed at both ends of the connector 12, and the connector 12 is rotatably installed on the mounting platform 11 through the rotating shaft 20. An electric telescopic rod 15 electrically connected to the PLC controller 9 is also fixedly installed on the top of the mounting platform 11, and an arc plate 24 is fixedly installed on the extended end of the electric telescopic rod 15.

[0057] The arc plate 24 fits with the top of the connector 12 , and the limiting teeth 31 meshing with the latch teeth 23 are evenly and fixedly mounted on the bottom wall of the arc plate 24 .

[0058] In the present embodiment, when in use, starting the third motor 17 through the PLC controller 9 can make the transmission gear 25 rotate at the bottom end of the support plate 13. When the transmission gear 25 rotates clockwise, the transmission gear 25 can push the latch tooth 23 downward, so that the connecting plate 10 at the bottom end of the connector 12 can be flipped counterclockwise, and the blades at the bottom end of the clamping plate 14 can be flipped, which is convenient for adjusting the angle of the blades and is conducive to the alignment of the blades. At the same time, the blades can be flipped during welding, which is convenient for the staff to weld different positions of the blades, can reduce the difficulty of welding, avoid the staff from welding from the bottom end of the blades, and improve the welding efficiency. When the electric telescopic rod 15 drives the limiting tooth 31 at the bottom end of the arc plate 24 to embed into the latch tooth 23 at the top end of the connector 12, the arc plate 24 can fix the connector 12 at this time, which can avoid the weight of the blades driving the connector 12 to flip downward during the welding process, and can reduce the load at the output end of the third motor 17, which is conducive to the use of the third motor 17.

[0059] Working principle: When in use, the staff first places the blade parts to be welded on the ground at the bottom end of the connecting plate 10, and then starts the second motor 16 through the PLC controller 9. The second motor 16 can drive the transmission shaft 22 to rotate in the second movable opening groove 21. When the transmission shaft 22 rotates clockwise, the threaded strip 26 on the outside of the transmission shaft 22 passes through the second threaded hole 27 at the center of the second movable ring 30 to make the clamping plate 14 slide toward the center of the connecting plate 10. At this time, the conical plate 28 at the bottom end of the clamping plate 14 can shovel up the blade to be welded during the closing process. When the clamping plate 14 moves to the corresponding position, the clamping plate 14 can clamp the blade and automatically fix the blade, which is convenient for welding the blade, can improve the stability of the blade welding, and can ensure the welding effect of the blade. At the same time, the rubber anti-sliding block 29 can protect both sides of the blade to avoid wear at the contact position between the blade and the clamping plate 14, which is beneficial to the safety of the blade.

[0060] Then, the first motor 7 is started through the PLC controller 9, and the first motor 7 can drive the threaded screw 8 to rotate in the first movable opening groove 5. When the threaded screw 8 rotates clockwise, the support plate 13 can slide toward the top of the first movable opening groove 5 along the threaded screw 8 through the first movable ring 18 and the first threaded hole 19, and the blade clamped by the clamping plate 14 at the bottom of the connecting plate 10 can slide upward, so that the blade can be moved to a suitable welding height, which is convenient for the staff to perform welding work, and the two bearing platforms 6 can be pushed to the middle position of the support platform 1 along the slide rail 2 through the hydraulic telescopic rod 3, so that the two blades to be welded can be contacted for welding work;

[0061] During welding, the third motor 17 is started by the PLC controller 9 to make the transmission gear 25 rotate at the bottom end of the support plate 13. When the transmission gear 25 rotates clockwise, the transmission gear 25 can push the latch tooth 23 downward, so that the connecting plate 10 at the bottom end of the connector 12 can be flipped counterclockwise, and the blades at the bottom end of the clamping plate 14 can be flipped, which is convenient for adjusting the angle of the blades and is conducive to the alignment of the blades. At the same time, the blades can be flipped during the welding process, which is convenient for the staff to weld different positions of the blades, can reduce the welding difficulty, avoid the staff from welding from the bottom end of the blades, and improve the welding efficiency. When the electric telescopic rod 15 drives the limiting tooth 31 at the bottom end of the arc plate 24 to embed into the latch tooth 23 at the top end of the connector 12, the arc plate 24 can fix the connector 12 at this time, which can avoid the weight of the blades driving the connector 12 to flip downward during the welding process, and can reduce the load on the output end of the third motor 17, which is conducive to the use of the third motor 17.

[0062] After welding is completed, the threaded screw 8 rotates counterclockwise. At this time, the support plate 13 can drive the connecting plate 10 to slide downward, which is convenient for moving the welded blades to the ground and placing the welded blades on the ground. The second motor 16 drives the transmission shaft 22 to rotate counterclockwise. At this time, the clamping plate 14 can slide to both sides of the connecting plate 10, and can automatically put down the welded blades, so as to realize automatic grasping and placement of the blades, reduce the labor burden of the staff, and improve work efficiency.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A positioning tool for welding wind turbine blades, characterized in that: include: A support platform (1), wherein two bearing platforms (6) are symmetrically and slidably mounted on the top of the support platform (1), the rear ends of the bearing platforms (6) are fixedly connected to a counterweight box (4), and the front end of the support platform (1) is also fixedly mounted with a PLC controller (9); A support plate (13), the support plate (13) being slidably mounted on the front end of the bearing platform (6), a mounting platform (11) being fixedly mounted at the edge of the bottom end of the support plate (13), a connecting head (12) being rotatably mounted on the mounting platform (11), and a connecting plate (10) being fixedly connected to the bottom end of the connecting head (12); A second movable opening groove (21), the second movable opening groove (21) being provided at the bottom end of the connecting plate (10), a transmission shaft (22) being rotatably mounted in the second movable opening groove (21), two second movable rings (30) being symmetrically slidably mounted on the outer side of the transmission shaft (22), a clamping plate (14) being fixedly connected to the bottom end of the second movable ring (30), a plurality of rubber anti-sliding blocks (29) being evenly fixedly mounted on the inner side of the clamping plate (14), and a conical plate (28) being fixedly mounted on the inner wall of the bottom end of the clamping plate (14); a first movable opening groove (5), wherein the first movable opening groove (5) is provided at the front end of the bearing platform (6), a threaded screw (8) is rotatably installed in the first movable opening groove (5), a first movable ring (18) is sleeved on the outer side of the threaded screw (8), a first threaded hole (19) adapted to the threaded screw (8) is provided at the center of the first movable ring (18), and the outer side of the first movable ring (18) extends to the outside of the first movable opening groove (5) and is fixedly connected to the side wall of the support plate (13); The top of the connector (12) is designed to be in an arc shape, and a plurality of latch teeth (23) are evenly and fixedly mounted on the top of the connector (12). A transmission gear (25) is rotatably mounted on the bottom of the support plate (13), and the transmission gear (25) is meshed with the latch teeth (23). A third motor (17) electrically connected to the PLC controller (9) is also fixedly mounted on the side wall of the support plate (13), and the output end of the third motor (17) is fixedly connected to the central axis of the transmission gear (25); Both ends of the connector (12) are fixedly mounted with a rotating shaft (20), the connector (12) is rotatably mounted on the mounting platform (11) via the rotating shaft (20), an electric telescopic rod (15) electrically connected to the PLC controller (9) is also fixedly mounted on the top of the mounting platform (11), and an arc plate (24) is fixedly mounted on the extended end of the electric telescopic rod (15); The arc-shaped plate (24) fits with the top of the connector (12), and limiting teeth (31) meshing with the latch teeth (23) are evenly fixedly mounted on the bottom wall of the arc-shaped plate (24); When in use, the third motor (17) is started by the PLC controller (9) to rotate the transmission gear (25) at the bottom end of the support plate (13). When the transmission gear (25) rotates clockwise, the transmission gear (25) pushes the latching teeth (23) downward, so that the connecting plate (10) at the bottom end of the connecting head (12) turns counterclockwise, and the blades at the bottom end of the clamping plate (14) are turned over. When the electric telescopic rod (15) drives the limiting teeth (31) at the bottom end of the arc plate (24) to fit into the latching teeth (23) at the top end of the connecting head (12), the arc plate (24) fixes the connecting head (12) to prevent the weight of the blades from driving the connecting head (12) to turn downward during the welding process, thereby reducing the load on the output end of the third motor (17) and facilitating the use of the third motor (17).

2. The positioning tool for welding wind turbine blades according to claim 1, characterized in that: A second movable ring (30) is fixedly mounted on the top of each clamping plate (14). The second movable ring (30) is sleeved on the transmission shaft (22). Threaded strips (26) are symmetrically fixedly mounted on the outer walls of both ends of the transmission shaft (22). A second threaded hole (27) matching the threaded strip (26) is provided at the center of the second movable ring (30).

3. The positioning tool for welding wind turbine blades according to claim 2, characterized in that: The bottom wall of the conical plate (28) is parallel to the bottom wall of the ground, and the top wall of the conical plate (28) is arranged to be inclined upward.

4. The positioning tool for welding wind turbine blades according to claim 3 is characterized in that: A second motor (16) electrically connected to the PLC controller (9) is fixedly mounted on the side wall of the connecting plate (10), and an output end of the second motor (16) is fixedly connected to the central axis of the transmission shaft (22).

5. The positioning tool for welding wind turbine blades according to claim 1, characterized in that: A first motor (7) electrically connected to a PLC controller (9) is fixedly mounted on the top of the support platform (6); an output end of the first motor (7) is fixedly connected to the central axis of the threaded screw (8).

6. A positioning tool for welding wind turbine blades according to claim 5, characterized in that: Two slide rails (2) are symmetrically fixedly mounted on the top of the support platform (1), and slide grooves matching the slide rails (2) are provided at the bottoms of the bearing platform (6) and the counterweight box (4).

7. A positioning tool for welding wind turbine blades according to claim 6, characterized in that: Hydraulic telescopic rods (3) are fixedly mounted on both sides of the top of the support platform (1), and the extended ends of the hydraulic telescopic rods (3) are fixedly connected to the side walls of the counterweight box (4).

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