Yaw speed reducer replacing tool

Abstract

The invention provides a yaw speed reducer replacing tool which comprises a stand column and a lifting rope and further comprises a cross beam, and the cross beam is installed at the top of the stand column. The winding and unwinding mechanism is mounted at the top of the cross beam and used for winding and unwinding the lifting rope; the supporting mechanism is installed on the cross beam and used for supporting the lifting rope, and the lifting rope is supported by the supporting mechanism and then vertically extends downwards; and the first fixing block is installed at the bottom of the lifting rope, and the interior of the first fixing block is in a hollow state. Rolling friction is formed between the bottom of the movable block and the inner bottom end of the first fixed block through the movable ball, the friction force between the movable block and the first fixed block is reduced, and therefore when the yaw speed reducer is hung on the lifting hook, lifted and rotationally adjusted, the lifting hook drives the movable block to rotate in the first fixed block through the connecting block at the moment, and the yaw speed reducer is fixed. Therefore, the hoisting rope is prevented from generating torsion along with rotation, and the yaw speed reducer can be conveniently positioned after rotation without manual maintenance.

Description

Technical Field

[0001] This invention relates to the field of lifting technology, and in particular to a tooling for replacing a yaw reducer. Background Technology

[0002] The yaw reducer is the core reduction device of the yaw system of a wind turbine generator. It mainly adopts a multi-stage planetary transmission structure, which can reduce the speed of the yaw motor and amplify the output torque, driving the nacelle to smoothly turn and align with the wind direction. It has the characteristics of strong load-bearing capacity, high reliability, and adaptability to harsh environments, ensuring that the wind turbine efficiently captures wind energy.

[0003] The yaw reducer is quite heavy, requiring a crane to lift and move it to the installation position before subsequent assembly. Installation involves tightening multiple sets of bolts, necessitating precise alignment of the reducer's mounting holes with the corresponding mounting points. However, the reducer's weight makes it prone to swaying and shifting after lifting, making it difficult to align the mounting holes immediately upon placement. Manual rotation of the reducer is required to adjust its position. During this process, the lifting wire rope twists along with the reducer and tends to spring back, requiring operators to apply sustained force to maintain alignment until some bolts are initially secured. This makes the entire installation process time-consuming, labor-intensive, and inconvenient. Therefore, a device is needed to solve these problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the existing technology. The present invention proposes a tooling for replacing yaw reducers.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A yaw reducer replacement fixture includes: a column and a lifting rope, and a crossbeam mounted on top of the column; a winding and releasing mechanism mounted on top of the crossbeam for winding and releasing the lifting rope; a support mechanism mounted on the crossbeam for supporting the lifting rope, which extends vertically downwards after being supported by the support mechanism; a first fixed block mounted on the bottom of the lifting rope, the first fixed block being hollow inside, with a slot at the center of its bottom, the cavity inside the first fixed block communicating with the external space through the slot, the diameter of the slot being smaller than the inner diameter of the first fixed block; a movable block slidably mounted inside the first fixed block, the movable block having a circular cross-section; a hook mounted on the bottom of the movable block via a connecting block, the connecting block movably penetrating the slot at the bottom of the first fixed block, the hook being used to suspend the yaw reducer to be lifted; and a movable ball rotatably mounted on the bottom of the first fixed block, the top of the movable ball being tightly against the bottom of the movable block, creating a gap between the bottom of the movable block and the bottom of the first fixed block.

[0006] Preferably, the take-up and release mechanism includes a first U-shaped block mounted on a crossbeam; a first motor is mounted on the first U-shaped block; a first winding roller is rotatably mounted on the inner side of the first U-shaped block, the output end of the first motor is fixed on the first winding roller, and the first motor drives the first winding roller to rotate; the lifting rope is wound and fixed on the outside of the first winding roller.

[0007] Preferably, the support mechanism includes fixed plates symmetrically installed on the same side of the crossbeam; it also includes a fixed pulley rotatably installed between the fixed plates, with the lifting rope passing over the top of the fixed pulley; a fixing ring is installed on the fixed plate, the fixed pulley is movably installed inside the fixing ring, and the fixing ring prevents the lifting rope from detaching from the edge of the fixed pulley; it also includes a positioning post installed between the fixed rings, with the lifting rope located between the fixed pulley and the positioning post, and the positioning post preventing the lifting rope from detaching from the top of the fixed pulley.

[0008] Preferably, it also includes a closing mechanism installed on the hook for closing the opening of the hook.

[0009] Preferably, the closing mechanism includes a second fixed block symmetrically mounted on the hook; a movable shaft is rotatably mounted on the second fixed block, with the other end of the movable shaft passing through the second fixed block; it also includes a hollow block mounted on the second fixed block, with one end of the movable shaft passing through the second fixed block and inserted into the hollow block, and tightly abutting the inner wall of the hollow block; a stop bar is mounted on the outside of the movable shaft, with the free end of the stop bar passing into the hook and tightly abutting the inner wall of the hook; and a torsion spring is also included between the movable shaft and the inner wall of the hollow block, the torsion spring being spiral-shaped.

[0010] Preferably, it also includes a rotating mechanism for rotating the yaw reducer, mounted on the crossbeam.

[0011] Preferably, the rotating mechanism includes a fixed plate installed at the bottom of the crossbeam, with a through hole at the center of the fixed plate and an arc-shaped inner edge. The lifting rope moves through the through hole and extends to the lower end of the fixed plate. A circular track is installed at the bottom of the fixed plate, and several toothed blocks are installed outside the circular track. At least two railcars are installed on the circular track and move along the circular track. The mechanism also includes a fixing component installed on the railcar to prevent the yaw reducer from rotating after lifting.

[0012] Preferably, the fixing component includes a second U-shaped block mounted on a railcar; a second motor mounted on the second U-shaped block; a second winding roller rotatably mounted on the inner side of the second U-shaped block, with the output end of the second motor fixed on the second winding roller; a through hole opened at the bottom of the second U-shaped block; and a connecting rope wound and fixed to the outside of the second winding roller, the bottom of the connecting rope movably passing through the through hole at the bottom of the second U-shaped block; and a clamping unit for clamping and fixing the connecting rope installed at the bottom of the second U-shaped block.

[0013] Preferably, the clamping unit includes a third fixing block symmetrically installed at the bottom of the second U-shaped block; a third motor is installed on the third fixing block; a screw rotatably installed between the third fixing blocks is also included, the output end of the third motor is fixed to the screw, the screw is a screw with both positive and negative threads, and the third motor is used to drive the screw to rotate; a positioning rod is also included between the third fixing blocks; two clamping plates are provided, symmetrically installed on both sides of the screw, and the clamping plates are movably sleeved outside the positioning rod, the positioning rod prevents the clamping plates from rotating with the screw; and a limiting ring is symmetrically installed on the first fixing block, with a connecting rope wound and fixed on the limiting ring.

[0014] Preferably, the railcar includes a car body mounted on a circular track; rollers are rotatably mounted on the bottom of the car body, with the rollers closely attached to the inner side of the circular track; it also includes a gear rotatably mounted on the bottom of the car body, the gear meshing with the outer tooth blocks of the circular track, and the gear being connected to the output shaft of a stepper motor mounted on the car body, thereby driving the gear to rotate through the stepper motor, thus causing the car body to move along the circular track.

[0015] Compared with the prior art, the beneficial effects of the present invention include: 1. By using the movable ball to create rolling friction between the bottom of the movable block and the bottom of the first fixed block, the friction between the movable block and the first fixed block is reduced. Thus, when the yaw reducer is suspended on the hook and lifted for rotation adjustment, the hook drives the movable block to rotate inside the first fixed block through the connecting block. This prevents the lifting rope from generating torque as it rotates, and makes it easy for the yaw reducer to be positioned after rotation without manual maintenance.

[0016] 2. Secure the yaw reducer with a binding rope or strap, then press the stop lever to rotate the movable shaft around its own central axis. This moves the stop lever away from the inner wall of the hook, opening the hook opening. Pass the binding rope or strap through the opening to move it into the hook. Release the stop lever, and the torsion spring will drive the stop lever to reset and close the hook opening again, thus preventing the binding rope or strap from coming off the hook.

[0017] 3. If the position of the yaw reducer cannot be manually adjusted due to the high-altitude space during installation, after the yaw reducer is moved to the installation point, the connecting rope needs to be fixed. Then, start the stepper motor to drive the gear to rotate. In this way, the vehicle body moves along the top of the circular track through the gear blocks. The two vehicle bodies move in the same direction. At this time, the fixed connecting rope is used to pull the yaw reducer to rotate, which is used to adjust the installation position of the yaw reducer until the mounting hole of the yaw reducer is aligned with the installation point. Attached Figure Description

[0018] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein: Figure 1 This is a schematic diagram of the structure of a yaw reducer replacement tooling proposed in this invention; Figure 2 This is a first sectional view of a yaw reducer replacement fixture proposed in this invention; Figure 3 A bottom view of a yaw reducer replacement fixture proposed in this invention; Figure 4 This is a second sectional view of a yaw reducer replacement fixture proposed in this invention; Figure 5 Appendix to this invention Figure 2 Enlarged view of point A in the middle; Figure 6 Appendix to this invention Figure 2 Enlarged view of point B in the middle; Figure 7 Appendix to this invention Figure 3 Enlarged view of point C in the middle; Figure 8 Appendix to this invention Figure 4 Enlarged view of point D; The following are the labels in the diagram: 1. Column; 2. Horizontal beam; 3. Clamping plate; 4. First U-shaped block; 5. First motor; 6. First winding roller; 7. Lifting rope; 8. Fixing plate; 9. Fixing disc; 10. First fixing block; 11. Limiting ring; 12. Hook; 13. Fixed pulley; 14. Fixing ring; 15. Positioning column; 16. Movable ball; 17. Movable block; 18. Connecting block; 19. Second fixing block; 20. Movable shaft; 21. Hollow block; 22. Torsion spring; 23. Stop bar; 24. Circular track; 25. Car body; 26. Gear; 27. Second U-shaped block; 28. Second motor; 29. ​​Second winding roller; 30. Connecting rope; 31. Third fixing block; 32. Third motor; 33. Positioning rod; 34. Screw. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0020] According to one embodiment of the present invention, Figures 1-8 As shown.

[0021] A yaw reducer replacement fixture includes: a column 1 and a lifting rope 7. A crossbeam 2 is bolted to the top of the column 1, providing stable vertical support for the crossbeam 2, bearing the longitudinal tension during lifting, and preventing the fixture from tipping over. The bolted connection ensures the crossbeam 2 is securely installed and facilitates disassembly and maintenance. A winding and unwinding mechanism for the lifting rope 7 is installed at the top of the crossbeam 2. This mechanism automates the winding and unwinding of the lifting rope 7, precisely controlling the lifting height of the yaw reducer, replacing manual traction, reducing labor intensity, and improving operational safety. A support mechanism is installed on the crossbeam 2 to support the lifting rope 7. After being supported by the support mechanism, the lifting rope 7 extends vertically downwards. The support mechanism guides and limits the lifting rope 7, ensuring it remains vertical and preventing deviation or swaying during lifting, thus ensuring smooth lifting and lowering of the yaw reducer. A first fixing block 10 is wound and fixed to the bottom of the lifting rope 7. The first fixing block 10 is hollow inside, and a slot is opened at the center of its bottom. The internal cavity of the first fixing block 10 communicates with the external space through the slot. The diameter of the slot is smaller than the inner diameter of the first fixing block 10. The slot acts as a limit for subsequent components, preventing them from coming out of the first fixing block 10, while providing a channel for component movement. A movable block 17 with a circular cross-section is slidably installed inside the first fixing block 10. A hook 12 is welded and fixed to the bottom of the movable block 17 through a connecting block 18. The connecting block 18 moves through the slot at the bottom of the first fixing block 10. The hook 12 is used to suspend the yaw reducer to be lifted. The connecting block 18 connects the movable block 17 and the hook 12, transmitting the lifting force. The welding fixation ensures the connection strength and prevents it from falling off during the lifting process. A movable ball 16 is rotatably mounted on the bottom of the first fixed block 10 via a ball socket. The top of the movable ball 16 is in close contact with the bottom of the movable block 17, creating a gap between the bottom of the movable block 17 and the bottom of the first fixed block 10. The ball socket provides rotational support for the movable ball 16, and the movable ball 16 reduces the contact area between the movable block 17 and the first fixed block 10. The movable ball 16 creates rolling friction between the bottom of the movable block 17 and the bottom of the first fixed block 10, reducing the frictional force between them. Thus, when the yaw reducer is suspended on the hook 12 and lifted for rotational adjustment, the hook 12 drives the movable block 17 to rotate inside the first fixed block 10 via the connecting block 18. This prevents the lifting rope 7 from generating torque during rotation, avoiding tangling, twisting, and damage. It also facilitates quick positioning of the yaw reducer after rotation without continuous manual support, improving operational convenience.

[0022] In this embodiment, the take-up and release mechanism includes a first U-shaped block 4 fixed to the crossbeam 2 by bolts. The first U-shaped block 4 provides an installation carrier for other components of the take-up and release mechanism, and the bolt fixing facilitates disassembly and maintenance. A first motor 5 is fixedly installed on the first U-shaped block 4 by a mounting bracket. The mounting bracket positions and fixes the first motor 5 to prevent vibration and displacement during operation, ensuring stable power output. A first winding roller 6 is rotatably installed on the inner side of the first U-shaped block 4 by bearings. The output end of the first motor 5 is fixed to the first winding roller 6 by a coupling. The first motor 5 drives the first winding roller 6 to rotate. The bearings reduce the frictional resistance when the first winding roller 6 rotates, and the coupling achieves flexible power transmission, reducing the impact when the first motor 5 operates and protecting the components from damage. The lifting rope 7 is wound and fixed to the outside of the first winding roller 6. The rotation of the first winding roller 6 is used to wind or release the lifting rope 7. The forward and reverse rotation of the first winding roller 6 realizes the take-up and release of the lifting rope 7, accurately controlling the lifting speed and height of the yaw reducer and improving operational accuracy.

[0023] In this embodiment, the support mechanism includes fixed plates 8 symmetrically welded and fixed on the same side of the crossbeam 2; it also includes fixed pulleys 13 rotatably mounted between the fixed plates 8 via bearings, with the lifting rope 7 passing over the top of the fixed pulley 13. The fixed pulley 13 changes the direction of force on the lifting rope 7, converting the horizontal tension into a vertical lifting force, while reducing frictional loss of the lifting rope 7; a fixing ring 14 is welded and fixed on the fixed plate 8, with the fixed pulley 13 movably mounted inside the fixing ring 14, preventing the lifting rope 7 from slipping off the side of the fixed pulley 13. The lifting rope 7 is disengaged from the fixed pulley 13 at the edge position, and the fixing ring 14 plays a lateral limiting role for the lifting rope 7, preventing the lifting rope 7 from falling out of the groove due to shaking during the lifting process and ensuring lifting safety; it also includes a positioning column 15 welded and fixed between the fixing rings 14, wherein the lifting rope 7 is located between the fixed pulley 13 and the positioning column 15, the positioning column 15 prevents the lifting rope 7 from falling out of the fixed pulley 13 from the top of the fixed pulley 13, the positioning column 15 and the fixing ring 14 cooperate to form a double limit, further improving the stability of the lifting rope 7 and avoiding the occurrence of derailment accidents.

[0024] In this embodiment, a closing mechanism is also included on the hook 12 for closing the opening of the hook 12. The closing mechanism can close the opening of the hook 12 to prevent the binding rope and binding strap from coming out of the hook 12 during the lifting process, avoid the yaw reducer from falling, and improve the lifting safety.

[0025] Specifically, the closing mechanism includes a second fixed block 19 symmetrically welded and fixed to the hook 12; a movable shaft 20 is rotatably mounted on the second fixed block 19 via bearings, with the other end of the movable shaft 20 passing through the second fixed block 19. The bearings reduce the frictional resistance of the movable shaft 20 during rotation, ensuring its flexible rotation, and the through-mounted design enhances its stability; it also includes a hollow block 21 welded and fixed to the second fixed block 19, wherein one end of the movable shaft 20 passing through the second fixed block 19 inserts into the hollow block 21 and is tightly against the inner wall of the hollow block 21. The hollow block 21 limits the movement of the movable shaft 20, preventing axial displacement; a stop rod 23 is welded and fixed to the outside of the movable shaft 20, wherein the free end of the stop rod 23 inserts into the hook 12 and is tightly against the inner wall of the hook 12. The stop rod 23 is used to close the opening of the hook 12. The system is tightly sealed against the inner wall to prevent the binding ropes and straps from coming out. It also includes a torsion spring 22 welded and fixed between the movable shaft 20 and the inner wall of the hollow block 21. The torsion spring 22 is vortex-shaped and has good elastic restoring performance. It can drive the stop bar 23 to automatically reset without manual operation. When suspending, pressing the stop bar 23 causes the movable shaft 20 to rotate around its own central axis. This moves the stop bar 23 away from the inner wall of the hook 12, opening the opening of the hook 12. The binding rope or strap is then passed through the opening, moving it into the hook 12. Releasing the stop bar 23 causes the torsion spring 22 to drive the stop bar 23 to reset and re-close the opening of the hook 12, thus preventing the binding rope or strap from coming out of the hook 12. The entire operation is convenient and efficient, requiring no additional locking components, and achieving rapid fixation and anti-detachment of the binding rope or strap.

[0026] In this embodiment, a rotating mechanism for rotating the yaw reducer is also installed on the crossbeam 2. The rotating mechanism can drive the yaw reducer to rotate around the axis of the lifting rope 7, precisely adjust the installation angle of the yaw reducer, and align it with the installation position. No manual pushing is required to rotate, reducing the difficulty of operation and improving the installation efficiency.

[0027] Specifically, the rotating mechanism includes a fixed plate 9 welded to the bottom of the crossbeam 2 via a bracket. The fixed plate 9 has a through hole at its center with an arc-shaped inner edge. A lifting rope 7 passes through the through hole and extends to the lower end of the fixed plate 9. The bracket provides stable support for the fixed plate 9, and the through hole provides a passage for the lifting rope 7. The arc-shaped inner edge prevents scratches on the lifting rope 7 and reduces wear. A circular track 24 is welded to the bottom of the fixed plate 9 via a bracket. Several toothed blocks are welded to the outside of the circular track 24. The circular track 24 provides a movement trajectory for the railcar, and the bracket ensures the circular track 24 is securely installed. A railcar, moving along the circular track 24, is mounted on the circular track 24. At least two railcars are provided, and the railcars are used to mount the fixing components. The mechanism also includes a fixing component mounted on the railcar to prevent the yaw reducer from rotating after lifting. This fixing component securely connects the yaw reducer to the railcar, ensuring that the yaw reducer rotates synchronously when the railcar moves, while preventing the yaw reducer from rotating on its own, thus ensuring precise angle adjustment.

[0028] Specifically, the fixing component includes a second U-shaped block 27 bolted to the railcar. The second U-shaped block 27 provides a mounting carrier for other components of the fixing component, and the bolt fixing facilitates disassembly and maintenance. A second motor 28 is fixedly mounted on the second U-shaped block 27 via a mounting bracket. The mounting bracket positions and fixes the second motor 28 to prevent vibration and displacement during operation, ensuring stable power output. A second winding roller 29 is rotatably mounted on the inner side of the second U-shaped block 27 via a bearing. The output end of the second motor 28 is fixed to the second winding roller 29 via a coupling. The bearing lowers the rotation of the second winding roller 29. The frictional resistance during rotation allows the coupling to achieve flexible power transmission and protect components from impact damage. A through hole is provided at the bottom of the second U-shaped block 27. It also includes a connecting rope 30 that is wound and fixed to the outside of the second winding roller 29. The bottom of the connecting rope 30 moves through the through hole at the bottom of the second U-shaped block 27. The connecting rope 30 is used to connect the railcar and the first fixed block 10. A clamping unit is installed at the bottom of the second U-shaped block 27 to clamp and fix the connecting rope 30. The clamping unit can clamp and fix the connecting rope 30 to prevent it from loosening, ensure stable transmission of traction force, and avoid shaking when the yaw reducer rotates.

[0029] Specifically, the clamping unit includes a third fixing block 31 symmetrically welded and fixed to the bottom of the second U-shaped block 27. The third fixing block 31 provides mounting support for other components of the clamping unit, and the symmetrical arrangement ensures balanced force during clamping. A third motor 32 is fixedly mounted on the third fixing block 31 via a mounting bracket. The mounting bracket positions and fixes the third motor 32 to prevent vibration and displacement during operation. It also includes a screw 34 rotatably mounted between the third fixing blocks 31 via bearings. The output end of the third motor 32 is fixed to the screw 34 via a coupling. The screw 34 is a screw with both positive and negative threads. The third motor 32 drives the screw 34 to rotate, and the bearings lower the screw 34. The frictional resistance during rotation; also includes a positioning rod 33 welded and fixed between the third fixing blocks 31; also includes a clamping plate 3 threadedly fitted onto the outside of the screw 34, wherein two clamping plates 3 are provided, symmetrically installed on both sides of the screw 34, and the clamping plates 3 are movably fitted onto the outside of the positioning rod 33, the positioning rod 33 prevents the clamping plates 3 from rotating with the screw 34, the two clamping plates 3 cooperate to clamp and loosen the connecting rope 30, the clamping plates 3 are fitted onto the positioning rod 33 to ensure smooth movement and avoid deviation; also includes a limiting ring 11 symmetrically welded and fixed onto the first fixing block 10, the connecting rope 30 is wound and fixed onto the limiting ring 11, the limiting ring 11 provides a winding and fixing point for the connecting rope 30.

[0030] Specifically, the railcar includes a car body 25 mounted on a circular track 24. The car body 25 provides a mounting platform for other components of the railcar, ensuring the overall structural stability of the railcar. Rollers are rotatably mounted on the bottom of the car body 25 via bearings. These rollers are in close contact with the inner side of the circular track 24, reducing frictional resistance between the car body 25 and the circular track 24, allowing the car body 25 to move smoothly along the circular track 24. The railcar also includes a gear 26 rotatably mounted on the bottom of the car body 25 via bearings. The gear 26 meshes with external gear blocks on the circular track 24, and is connected to the output shaft of a stepper motor mounted on the car body 25. The stepper motor drives the gear 26 to rotate, thereby moving the car body 25 along the circular track 24. The meshing of the gear 26 with the gear blocks enables power transmission, and the stepper motor can precisely control the speed of the gear 26, thus achieving precise movement and positioning of the car body 25 and ensuring precise controllability of the yaw reducer's rotation angle.

[0031] Working principle: When in use, the connecting rope 30 is wound and fixed on the limiting ring 11. Then, the first motor 5 drives the first winding roller 6 to rotate, so that the lifting rope 7 is loosened. At this time, the second motor 28 drives the second winding roller 29 to rotate, so that the connecting rope 30 is loosened. Under the action of gravity, the hook 12 moves downward until the hook 12 moves to the lifting position. During lifting, the yaw reducer is secured with binding ropes or straps. Then, the stop lever 23 is pressed, causing the movable shaft 20 to rotate around its own central axis. This moves the stop lever 23 away from the inner wall of the hook 12, opening the hook 12. The binding rope or strap is then passed through the opening, moving it into the hook 12. The stop lever 23 is then released, and the torsion spring 22 drives the stop lever 23 to reset and close the hook 12 again, preventing the binding rope or strap from coming out of the hook 12. After that, the connecting rope 30 is released from the limiting ring 11, and the connecting ropes 30 on both sides are fixed to the two ends of the yaw reducer. The first motor 5 is started to drive the first winding roller 6 to rotate in the opposite direction, so that the lifting rope 7 is wound up. At the same time, the second motor 28 drives the second winding roller 29 to rotate in the opposite direction, so that the connecting rope 30 is wound up, thereby lifting the yaw reducer to the installation point. During the lifting process, the connecting rope 30 is fixed at both ends of the yaw reducer. The fixing at both ends prevents the yaw reducer from rotating during the lifting process, ensuring safety during the lifting process. When the yaw reducer is moved to the installation point, the third motor 32 is started. The third motor 32 drives the screw 34 to rotate. Since the clamping plate 3 is sleeved outside the positioning rod 33, the clamping plate 3 cannot rotate with the screw 34, so the clamping plate 3 and the screw 34 rotate relative to each other. The clamping plate 3 can then move along the screw 34. The screw 34 is a screw with both positive and negative threads, so the two clamping plates 3 move in opposite directions until the connecting rope 30 is clamped and fixed. If the position of the yaw reducer cannot be manually adjusted due to the high-altitude space during installation, after the yaw reducer is moved to the installation point, the connecting rope 30 needs to be fixed. Then, the stepper motor is started to drive the gear 26 to rotate. In this way, the car body 25 moves along the top of the circular track 24 through the gear block. The two car bodies 25 move in the same direction. At this time, the fixed connecting rope 30 is used to pull the yaw reducer to rotate, which is used to adjust the installation position of the yaw reducer until the mounting hole of the yaw reducer is aligned with the installation point.

[0032] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A tooling for replacing a yaw reducer, comprising: The column and lifting rope are characterized in that they also include a crossbeam, which is installed on the top of the column; A winding and releasing mechanism, installed on top of the crossbeam, is used to wind up and release the lifting rope; A support mechanism is installed on a crossbeam to support the lifting rope, which extends vertically downward after being supported by the support mechanism. The first fixing block is installed at the bottom of the lifting rope. The first fixing block is hollow inside and has a slot at the center of its bottom. The cavity inside the first fixing block is connected to the external space through the slot. The diameter of the slot is smaller than the inner diameter of the first fixing block. A movable block, which is slidably installed inside a first fixed block, has a circular cross-section. The hook is installed at the bottom of the movable block via a connecting block, which movably passes through a slot at the bottom of the first fixed block. The hook is used to suspend the yaw reducer to be lifted. The movable ball is rotatably installed inside the bottom of the first fixed block, with the top of the movable ball in close contact with the bottom of the movable block, creating a gap between the bottom of the movable block and the bottom of the first fixed block.

2. The yaw reducer replacement fixture according to claim 1, characterized in that, The take-up and release mechanism includes a first U-shaped block installed on the crossbeam; The first motor is mounted on the first U-shaped block; A first winding roller is rotatably mounted on the inner side of the first U-shaped block, and the output end of the first motor is fixed on the first winding roller. The first motor drives the first winding roller to rotate. The lifting rope is wound and fixed to the outside of the first winding roller.

3. The yaw reducer replacement fixture according to claim 1, characterized in that, The support mechanism includes fixed plates symmetrically installed on the same side of the crossbeam; It also includes a fixed pulley that is rotatably mounted between the fixed plates, with the lifting rope passing over the top of the fixed pulley; A fixing ring is installed on the fixing plate, and a fixed pulley is movably installed inside the fixing ring. The fixing ring prevents the lifting rope from coming off the fixed pulley from the edge of the fixed pulley. It also includes a positioning post installed between the fixed rings, with the lifting rope located between the fixed pulley and the positioning post, and the positioning post preventing the lifting rope from detaching from the top of the fixed pulley.

4. The yaw reducer replacement fixture according to claim 1, characterized in that, It also includes a closing mechanism installed on the hook for closing the opening of the hook.

5. The yaw reducer replacement fixture according to claim 4, characterized in that, The closing mechanism includes a second fixing block symmetrically installed on the hook; A movable shaft is rotatably mounted on the second fixed block, and the other end of the movable shaft passes through the second fixed block. It also includes a hollow block installed on the second fixed block, with one end of the movable shaft passing through the second fixed block and penetrating into the interior of the hollow block, and closely attached to the inner wall of the hollow block; A stop bar is installed on the outside of the movable shaft. The free end of the stop bar passes into the inside of the hook and is in close contact with the inner wall of the hook. It also includes a torsion spring installed between the movable shaft and the inner wall of the hollow block, the torsion spring being vortex-shaped.

6. The yaw reducer replacement fixture according to claim 1, characterized in that, It also includes a rotating mechanism mounted on the crossbeam for rotating the yaw reducer.

7. The yaw reducer replacement fixture according to claim 6, characterized in that, The rotating mechanism includes a fixed plate installed at the bottom of the crossbeam. A through hole is opened in the center of the fixed plate, and the inner edge of the through hole is arc-shaped. The lifting rope moves through the through hole and extends to the lower end of the fixed plate. The bottom of the fixed plate is equipped with a ring track, and several toothed blocks are installed on the outside of the ring track; At least two railcars are installed on the circular track and move along the circular track. It also includes a fixing assembly installed on the railcar to prevent the yaw reducer from rotating after lifting.

8. The yaw reducer replacement fixture according to claim 7, characterized in that, The fixing component includes a second U-shaped block mounted on the railcar; A second motor is mounted on the second U-shaped block; The second winding roller is rotatably mounted on the inner side of the second U-shaped block, and the output end of the second motor is fixed on the second winding roller; The second U-shaped block has a through hole at its bottom; It also includes a connecting rope that is wound and fixed to the outside of the second winding roller, with the bottom of the connecting rope movably passing through a through hole at the bottom of the second U-shaped block; The bottom of the second U-shaped block is equipped with a clamping unit for clamping and fixing the connecting rope.

9. The yaw reducer replacement fixture according to claim 8, characterized in that, The clamping unit includes a third fixing block symmetrically installed at the bottom of the second U-shaped block; A third motor is installed on the third fixing block; It also includes a screw that is rotatably mounted between the third fixed blocks, the output end of the third motor is fixed on the screw, the screw is a screw with both positive and negative threads, and the third motor is used to drive the screw to rotate; It also includes positioning rods installed between the third fixing blocks; It also includes a clamping plate that is threaded onto the outside of the screw. There are two clamping plates, which are symmetrically installed on both sides of the screw. The clamping plates are movably sleeved on the outside of the positioning rod, and the positioning rod prevents the clamping plates from rotating with the screw. It also includes limiting rings symmetrically installed on the first fixed block, with connecting ropes wrapped and fixed on the limiting rings.

10. The yaw reducer replacement fixture according to claim 7, characterized in that, The railcar includes a car body installed on a circular track; The bottom of the vehicle body is rotatably equipped with rollers, which are in close contact with the inner side of the circular track; It also includes a gear rotatably mounted on the bottom of the vehicle body, which meshes with the outer tooth block of the circular track and is connected to the output shaft of a stepper motor mounted on the vehicle body. The stepper motor drives the gear to rotate, thereby moving the vehicle body along the circular track.

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