A yaw pad replacement tool

Abstract

The present application relates to the technical field of wind power generation, and particularly relates to a yaw liner replacement tool.The present application provides a yaw liner replacement tool, which comprises a tower drum, a nacelle, a wind wheel, yaw driving devices, a yaw big gear ring, a yaw liner, side bearings and jacks, the top of the tower drum is provided with the rotatably connected nacelle, the left end of the nacelle is provided with the rotatably connected wind wheel, a plurality of yaw driving devices are installed in the nacelle, the top of the tower drum is fixedly connected with the yaw big gear ring, a plurality of side bearings for supporting the nacelle are irregularly and interval connected to the inner side of the yaw big gear ring, and the yaw liner is located between the bottom of the nacelle and the top surface of the side bearings.Through the first electric push rod as a power source to drive the scraper to move, the yaw liner to be replaced can be scraped off, automatic disassembly is realized, and this design avoids manual direct contact with the installation area, and reduces the risk of injury of the operator.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a tooling for replacing yaw liners. Background Technology

[0002] Yaw liners are a crucial component of the yaw system in wind turbine generators. Their primary function is to reduce friction and wear during yaw. Frequent yaw operations during wind turbine operation can lead to localized wear on the yaw liner surface. Furthermore, if the brake calipers are not installed parallel, it can increase localized friction, generating noise. This situation prevents the wind turbine rotor from consistently being in the windward position, thus hindering the full utilization of wind energy and ultimately reducing the generator's power generation efficiency. In such cases, replacement of the yaw liner is necessary.

[0003] Traditional tooling replacement methods require operators to carry tools to remove the old yaw bushing, carefully remove the old bushing and other components using appropriate tools (such as a pry bar), install the new bushing, and then use the specified adhesive to install the new bushing in place according to the instructions. This method has the following drawbacks:

[0004] 1. Due to differences in the technical skills and experience of operators, the results of manual replacement may be inconsistent, resulting in inaccurate installation of the gasket or insecure fixing.

[0005] 2. The replacement process requires manual handling of heavy objects, especially the removal of the old gasket and the installation of the new gasket. This places high demands on the physical strength of the operators, making the installation process extremely inconvenient.

[0006] 3. During the replacement process, operators need to directly contact the installation area, which poses a risk of injury.

[0007] Based on this, in order to solve the aforementioned technical defects, a yaw liner replacement tooling is proposed. Summary of the Invention

[0008] To overcome the shortcomings of traditional tooling for manually replacing yaw liners, which is extremely inconvenient and affects installation accuracy, the present invention aims to provide a tooling for replacing yaw liners.

[0009] The technical solution is as follows: A yaw liner replacement fixture includes a tower, nacelle, wind turbine, yaw drive device, yaw gear ring, yaw liner, side bearings, and jacks. The nacelle is rotatably connected to the top of the tower, and the wind turbine is rotatably connected to the left end of the nacelle. Multiple yaw drive devices are installed inside the nacelle. The yaw gear ring is fixedly connected to the top of the tower. Multiple side bearings for supporting the nacelle are irregularly spaced on the inner side of the yaw gear ring. The yaw liner is located between the bottom of the nacelle and the top surface of the side bearings. The yaw liner is fixed to the top surface of the side bearings by a fixing structure. Two jacks are installed on both sides of the yaw gear ring. The replacement fixture also includes a guide ring, a first slider, a scraper, a drive assembly, and an installation assembly. The guide ring is connected to the middle of the bottom of the yaw gear ring. The first slider is slidably connected to the upper side of the guide ring. The scraper is slidably connected to the first slider. The drive assembly and the installation assembly are provided on the guide ring.

[0010] As an improvement to the above solution, the drive assembly includes a gear ring, a return spring, a first motor, a first gear, a pusher, and a first electric push rod. The gear ring is connected to the outside of the guide ring. Two return springs are connected between the scraper and the first slider. The first motor is installed on the lower side of the first slider. The first gear is connected to the output shaft of the first motor and meshes with the gear ring. The first electric push rod is installed inside the first slider. The pusher is connected to the telescopic end of the first electric push rod and the pusher contacts and engages with the scraper.

[0011] As an improvement to the above solution, the mounting assembly includes a second slider, a bracket, a top block, a second electric push rod, a second motor, a second gear, and a positioning assembly. The second slider is slidably connected to the guide ring at a position away from the first slider. The second electric push rod is installed inside the second slider. A bracket for supporting the yaw pad is connected to the telescopic end of the second electric push rod. Top blocks are symmetrically connected to the front side of the bracket. The second motor is installed on the lower side of the second slider. The output shaft of the second motor is connected to the second gear, which meshes with the gear ring. The positioning assembly is provided on the second slider.

[0012] As an improvement to the above solution, the positioning component includes a support rod, a wiping block, and an elastic element. The support rod is connected to the top of the second slider, and the wiping block is rotatably connected to the rear side of the support rod. Elastic elements are connected to both sides of the wiping block and the support rod. The bottom sides of the wiping block are provided with mating grooves that cooperate with the top block.

[0013] As an improvement to the above solution, the front side of the wiping block is blocked by the support rod, so it can only rotate in one direction and cannot rotate to the front.

[0014] As an improvement to the above solution, it also includes a pressure block, a torsion spring, and a rotating block. The pressure block is rotatably connected to the rear side of the scraper. Two torsion springs are connected between the pressure block and the scraper on both sides. The rotating block is connected to the middle of the pressure block. The side of the rotating block near the pusher is inclined. The pusher and the rotating block are in contact and cooperate.

[0015] As an improvement to the above scheme, it also includes a lifting frame, support components, screws, support frames, telescopic rods, protective rings, hinge rods, and a power assembly. Support components are symmetrically connected to the bottom of the yaw gear ring, and screws are rotatably connected to each support component. The lifting frame is threaded between the screws. Telescopic rods are symmetrically connected to the upper inner side of the yaw gear ring, and protective rings are connected to the inner ends of the telescopic rods. Hinges are symmetrically rotatably connected to the top of the lifting frame. Support frames are symmetrically connected to the bottom inner side of the yaw gear ring. The hinge rods are all slidably connected to the support frames on the same side, and the upper ends of the hinge rods are all rotatably connected to the protective rings on the same side.

[0016] As an improvement to the above solution, the power assembly includes a drive motor and a drive gear. The drive motor is installed at the bottom of the support member, and the drive gear is connected to the output shaft of the drive motor. The drive gear is also connected to the bottom of the screw, and the two drive gears on the same side mesh with each other.

[0017] Beneficial effects: 1. By using the first electric push rod as a power source to drive the scraper to move, the yaw pad that needs to be replaced can be scraped off, realizing automatic disassembly. This design avoids direct manual contact with the installation area and reduces the risk of injury to operators.

[0018] 2. Place the new yaw pad on the bracket, and use the second electric push rod to accurately deliver the yaw pad to the top surface of the side bearing for pasting and fixing. During the movement of the yaw pad, the top surface of the yaw pad can also be lubricated, which provides convenience for operators, greatly shortens the replacement time, and improves work efficiency.

[0019] 3. When disassembling the yaw liner, the pressure block can automatically press the disassembled yaw liner onto the scraper to prevent it from falling into other places inside the tower, ensuring that the disassembled liner is easy to pick up.

[0020] 4. After the nacelle is lifted, the drive motor rotates to move the protective ring outward, isolating the nacelle from the yaw gear ring, preventing the nacelle from falling due to instability, and increasing the safety of operators during operation. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0022] Figure 2 This is a partial cross-sectional view of the present invention.

[0023] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention.

[0024] Figure 4 This is a three-dimensional structural diagram of the yaw gear ring, yaw liner, side bearing, etc. of the present invention.

[0025] Figure 5 This is a three-dimensional structural diagram of the guide ring, toothed ring, first slider, etc. of the present invention.

[0026] Figure 6 This is a three-dimensional structural diagram of the scraper, reset spring, pusher, etc. of the present invention.

[0027] Figure 7 This is an exploded view of the first electric actuator, the first motor, the first gear, etc. of the present invention.

[0028] Figure 8 This is a three-dimensional structural diagram of the pressing block, scraper, rotating block, etc. of the present invention.

[0029] Figure 9 This is a three-dimensional structural diagram of the pusher, pressure block, torsion spring, etc. of the present invention.

[0030] Figure 10 This is a three-dimensional structural diagram of the second slider, bracket, guide ring, etc. of the present invention.

[0031] Figure 11 This is a three-dimensional structural diagram of the top block, the second electric push rod, the second motor, etc. of the present invention.

[0032] Figure 12 This is a three-dimensional structural diagram of the support rod, stop rod, and docking groove of the present invention.

[0033] Figure 13 This is a cross-sectional structural diagram of the support rod, stop rod, and elastic element of the present invention.

[0034] Figure 14 This is a three-dimensional structural diagram of the lifting frame, screw, support frame, etc. of the present invention.

[0035] Figure 15 This is a three-dimensional structural diagram of the telescopic rod, protective ring, hinge rod, etc. of the present invention.

[0036] Figure 16 This is a three-dimensional structural diagram of the support component, lifting frame, screw, etc. of the present invention.

[0037] Figure 17 For the present invention Figure 16 Enlarged view of point A in the middle.

[0038] Labels in the diagram: 1. Tower, 101. Nacelle, 102. Wind turbine, 103. Yaw drive unit, 104. Yaw gear ring, 105. Yaw liner, 106. Side bearing, 107. Jack, 201. Guide ring, 202. Gear ring, 203. First slider, 204. Scraper, 205. Return spring, 206. First motor, 2061. First gear, 207. Pushing component, 208. First electric push rod, 301. Second slider, 302. Support Frame, 303, Top block, 304, Second electric push rod, 305, Second motor, 306, Second gear, 401, Support rod, 402, Wiping block, 403, Connecting groove, 404, Elastic element, 501, Pressure block, 502, Torsion spring, 503, Rotating block, 601, Lifting frame, 602, Support element, 603, Screw, 604, Support frame, 605, Telescopic rod, 606, Protective ring, 607, Hinge rod, 701, Drive motor, 702, Drive gear. Detailed Implementation

[0039] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0040] Example 1: A tooling for replacing yaw pads, such as Figures 1-7 and Figures 10-13 As shown, the system includes a tower 1, a nacelle 101, a wind turbine 102, a yaw drive device 103, a yaw gear ring 104, a yaw liner 105, a side bearing 106, a jack 107, a guide ring 201, a first slider 203, a scraper 204, a drive assembly, and an installation assembly. The nacelle 101 is rotatably connected to the top of the tower 1. The wind turbine 102 is rotatably connected to the left end of the nacelle 101. Multiple yaw drive devices 103 are installed inside the nacelle 101. A yaw gear ring 104 is fixedly connected to the top of the tower 1. Multiple supports are irregularly spaced on the inner side of the yaw gear ring 104. The side bearing 106 of the nacelle 101 and the yaw pad 105 are located between the bottom of the nacelle 101 and the top surface of the side bearing 106. The yaw pad 105 is fixed to the top surface of the side bearing 106 by a fixing structure. Two jacks 107 for lifting the nacelle 101 are installed on both the front and rear sides of the yaw gear ring 104. A guide ring 201 is welded to the middle of the bottom of the yaw gear ring 104. A first slider 203 is slidably connected to the upper side of the guide ring 201. A scraper 204 for removing the yaw pad 105 is slidably connected to the first slider 203. The guide ring 201 is equipped with a drive assembly and an installation assembly.

[0041] like Figure 3 and Figures 5-7As shown, the drive assembly includes a gear ring 202, a return spring 205, a first motor 206, a first gear 2061, a pusher 207, and a first electric push rod 208. The gear ring 202 is connected to the outside of the guide ring 201. Two return springs 205 are connected between the scraper 204 and the first slider 203. The first motor 206 is bolted to the lower side of the first slider 203. The first gear 2061 is connected to the output shaft of the first motor 206. The first gear 2061 meshes with the gear ring 202. The first electric push rod 208 is bolted to the inside of the first slider 203. The pusher 207 is connected to the telescopic end of the first electric push rod 208. The pusher 207 contacts and engages with the scraper 204.

[0042] like Figures 10-13 As shown, the mounting assembly includes a second slider 301, a bracket 302, a top block 303, a second electric push rod 304, a second motor 305, a second gear 306, and a positioning assembly. The second slider 301 is slidably connected to the guide ring 201 at a position away from the first slider 203. The second electric push rod 304 is installed inside the second slider 301 by bolts. The bracket 302 for supporting the yaw pad 105 is connected to the telescopic end of the second electric push rod 304. The top blocks 303 are symmetrically welded to the left and right sides of the front side of the bracket 302. The second motor 305 is installed on the lower side of the second slider 301 by bolts. The second gear 306 is connected to the output shaft of the second motor 305. The second gear 306 meshes with the gear ring 202. The positioning assembly is provided on the second slider 301.

[0043] like Figures 12-13 As shown, the positioning assembly includes a support rod 401, a wiping block 402, and an elastic element 404. The support rod 401 is connected to the top of the second slider 301. The wiping block 402 for applying lubricating oil is rotatably connected to the rear side of the support rod 401. Elastic elements 404 are connected to the support rod 401 on both the left and right sides of the wiping block 402. The bottom left and right sides of the wiping block 402 are provided with mating grooves 403 that cooperate with the top block 303. The front side of the wiping block 402 is blocked by the support rod 401 and can only rotate in one direction, but cannot rotate forward.

[0044] The yaw liner 105 is an important component of the yaw system of a wind turbine generator set. Its main function is to reduce friction and wear during yaw. Over time, the yaw liner 105 will wear down, leading to noise. To replace it, first switch the wind turbine generator set to service mode and disconnect the power supply, ensuring safety. Then, enter the tower 1, prepare the necessary tools, and use jack 107 to lift the nacelle 101 upwards to facilitate the replacement of the yaw liner 105. Next, remove the relevant fixing bolts, and then start the first motor 206. The output shaft of the first motor 206 rotates, driving the first gear 2061 to rotate. The first gear 2061 meshes with the gear ring 202, rotating circumferentially along the gear ring 202, thus driving... The first slider 203 rotates along the guide ring 201, and all components on the first slider 203 rotate accordingly. When the first slider 203 moves to be accurately aligned with the yaw pad 105, the first motor 206 is turned off, and then the first electric push rod 208 is activated. The telescopic end of the first electric push rod 208 extends, driving the pusher 207 to move outward. After the pusher 207 contacts the scraper 204, it pushes the scraper 204 to move towards the yaw pad 105, stretching the return spring 205. The old yaw pad 105 can then be scraped off by the scraper 204, causing it to detach from the top surface of the side bearing 106 without manual disassembly. After disassembly, the first electric push rod 208 is reset and automatically turned off. The telescopic end of the first electric push rod 208 shortens, driving... The pusher 207 moves inward to reset, thus no longer blocking the scraper 204. The reset spring 205 rebounds and resets, causing the scraper 204 to gradually move inward to reset. Following the above operation, the remaining yaw pads 105 are disassembled one by one. During operation, the first motor 206 can be controlled to rotate forward or backward according to the position of the yaw pads 105, so as to drive the first slider 203 to rotate forward or backward along the guide ring 201. After the operation is completed, the first slider 203 is reset to the initial position to avoid affecting the movement of the second slider 301. Then, the second motor 305 is started, driving the second gear 306 to rotate, so that it rotates circumferentially along the gear ring 202, so that the second slider 301 and its components rotate together. After the face bearing 106 is precisely aligned, the second motor 305 is turned off. Then, the new yaw pad 105 is placed on the bracket 302, and a special adhesive is applied to the bottom of the yaw pad 105, avoiding contact with the bracket 302. Subsequently, the second electric push rod 304 is activated. The position of the extension end of the second electric push rod 304 is precisely adjusted. The extension end drives the bracket 302 and the top block 303 to move outward, thereby moving the yaw pad 105 outward and closer to the side bearing 106. When the yaw pad 105 contacts the wiping block 402, it pushes the wiping block 402 to rotate, and the elastic element 404 deforms. The wiping block 402 has been pre-lubricated. The wiping block 402 rotates and contacts the top surface of the yaw pad 105.Lubricating oil will be applied to the top surface of the yaw pad 105. The top block 303 will press against the yaw pad 105 to ensure that the yaw pad 105 is stable on the bracket 302. After the yaw pad 105 passes the wiping block 402, the elastic element 404 will rebound and reset, causing the wiping block 402 to reverse and reset. When the extension end of the second electric push rod 304 extends to the preset position, the bracket 302 moves with the new yaw pad 105 to the top surface of the corresponding side bearing 106. The extension end of the second electric push rod 304 will shorten and reset, causing the bracket 302 and the top block 303 to move inward and reset. The top block 303 moves forward through the docking groove 403, while the yaw pad 105 on the bracket 302 will be blocked by the wiping block 402. Because the front of the wiping block 402 is blocked by the support rod 401, the wiping block... Unable to move forward, bracket 302 moves forward, leaving yaw pad 105 on the top surface of side bearing 106. It adheres to the top surface of side bearing 106 via adhesive on its bottom surface. After the extension end of the second electric push rod 304 returns to its original position, it automatically closes, thus completing the automatic installation of yaw pad 105 without manual intervention. Subsequently, the relevant fixing bolts are installed to secure yaw pad 105 to side bearing 106. The remaining yaw pads 105 are installed following the same procedure. After completing the replacement of yaw pads 105, the power supply to the relevant equipment is turned off, and jack 107 is reset, lowering and resetting nacelle 101. The replaced yaw pad 105 continues to protect nacelle 101 during yaw, and the wind turbine generator can then resume normal operation.

[0045] Example 2: Based on Example 1, such as Figures 8-9 As shown, it also includes a pressure block 501, a torsion spring 502, and a rotating block 503. The pressure block 501, which is used to press down the removed yaw pad 105, is rotatably connected to the rear side of the scraper 204. Two torsion springs 502 are connected between the left and right sides of the pressure block 501 and the scraper 204. The rotating block 503 is connected to the middle of the pressure block 501. The side of the rotating block 503 near the pusher 207 is a slope. The pusher 207 and the rotating block 503 are in contact and cooperate.

[0046] When the yaw liner 105 is scraped off and replaced using the scraper 204, the telescopic end of the first electric push rod 208 extends, driving the pusher 207 to move outward. The pusher 207 first contacts the rotating block 503, thereby pushing the inclined angle of the rotating block 503, causing the rotating block 503 to rotate, which in turn causes the pressure block 501 to rotate. The torsion spring 502 deforms, making the pressure block 501 vertical. As the pusher 207 continues to move, it drives the scraper 204 to move outward, disassembling the yaw liner 105. The scraper 204 scrapes the yaw liner 105, pushing it towards the scraper 204. Above 04, after the yaw pad 105 is scraped off, the telescopic end of the first electric push rod 208 shortens and resets, driving the pusher 207 to reset, and then disengaging from the rotating block 503. The torsion spring 502 will rebound and reset, causing the pressure block 501 and the rotating block 503 to reverse and reset. The pressure block 501 will press the yaw pad 105 scraped off above the scraper 204. When the scraper 204 resets, it moves the yaw pad 105 inward to reset, which makes it easier for the operator to remove the yaw pad 105 from the scraper 204 and prevents the yaw pad 105 from falling to other places during the disassembly process, making it inconvenient to pick up.

[0047] like Figures 14-17 As shown, it also includes a lifting frame 601, a support member 602, a screw 603, a support frame 604, a telescopic rod 605, a protective ring 606, a hinge rod 607, and a power assembly. Support members 602 are symmetrically welded to the bottom of the yaw gear ring 104. Screws 603 are rotatably connected to each support member 602. The lifting frame 601 is threaded between the screws 603. Telescopic rods 605 are symmetrically connected to the upper inner side of the yaw gear ring 104. 05 is connected to a protective ring 606 at its inner end. The protective ring 606 moves to the top surface of the yaw gear ring 104 and can separate the yaw gear ring 104 from the cabin 101. The top of the lifting frame 601 is symmetrically connected to the hinge rod 607 in a rotating manner. The bottom of the yaw gear ring 104 is symmetrically connected to the support frame 604 in a supporting manner. The hinge rod 607 is slidably connected to the support frame 604 on the same side. The upper end of the hinge rod 607 is rotatably connected to the protective ring 606 on the same side.

[0048] like Figures 16-17 As shown, the power assembly includes a drive motor 701 and a drive gear 702. The bottom of the support member 602 is bolted with the drive motor 701. The output shaft of the drive motor 701 is connected to the drive gear 702. The bottom of the screw 603 is also connected to the drive gear 702. The two drive gears 702 on the same side mesh with each other.

[0049] When replacing the yaw liner 105 by lifting the engine compartment 101 with jack 107, the drive motor 701 can be started. The drive motor 701 drives the screw 603 to rotate through the rotation of two drive gears 702. The rotation of the screw 603 causes the lifting frame 601 to move upward. The lifting frame 601 pushes the hinge rod 607 to rotate. The hinge rod 607 slides along the support frame 604. At the same time, the hinge rod 607 pushes the protective ring 606 to move outward. The telescopic rod 605 then shortens. When the protective ring 606 moves to the top surface of the yaw gear ring 104, the drive motor 701 automatically shuts off. At this time, the protective ring 606 can isolate the engine compartment. The cabin 101 and the yaw gear ring 104 serve a protective function. During the replacement of the yaw liner 105, if the cabin 101 becomes unstable and falls unexpectedly, the protective ring 606 can hold the cabin 101 in place to prevent injury to the operators. After the yaw liner 105 is replaced, the drive motor 701 can be controlled to rotate in reverse. The drive gear 702 drives the screw 603 to rotate in reverse. The screw 603 drives the lifting frame 601 to move downward, pushing the hinge rod 607 to rotate in reverse. The hinge rod 607 pulls the protective ring 606 to move inward and reset. The telescopic rod 605 extends accordingly. After resetting, the drive motor 701 automatically shuts off.

[0050] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Therefore, all equivalent changes made to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A yaw liner replacement tooling, comprising a tower (1), a nacelle (101), a wind wheel (102), a yaw drive device (103), a yaw big gear ring (104), a yaw liner (105), a side bearing (106) and a jack (107), the tower (1) is provided with a rotatable connected nacelle (101) at the top, the nacelle (101) is provided with a rotatable connected wind wheel (102) at the left end, a plurality of yaw drive devices (103) are installed in the nacelle (101), the tower (1) is fixedly connected with the yaw big gear ring (104) at the top, a plurality of side bearings (106) for supporting the nacelle (101) are irregularly connected on the inner side of the yaw big gear ring (104), the yaw liner (105) is located between the bottom of the nacelle (101) and the top surface of the side bearing (106), the yaw liner (105) is fixed on the top surface of the side bearing (106) through a fixing structure, two jacks (107) are installed on both sides of the yaw big gear ring (104), characterized in that, The replacement tool further comprises a guide ring (201), a first sliding block (203), a scraper (204), a driving assembly and a mounting assembly, the yaw big gear ring (104) is connected with the guide ring (201) in the middle of the inner bottom, the guide ring (201) is slidably connected with the first sliding block (203) on the upper side, the first sliding block (203) is slidably connected with the scraper (204) on the upper side, and the guide ring (201) is provided with the driving assembly and the mounting assembly; The driving assembly comprises a gear ring (202), a reset spring (205), a first motor (206), a first gear (2061), a pushing piece (207) and a first electric push rod (208), the guide ring (201) is connected with the gear ring (202) on the outer side, the scraper (204) and the first sliding block (203) are connected with two reset springs (205), the first sliding block (203) is provided with the first motor (206) on the lower side, the first motor (206) is connected with the first gear (2061) on the output shaft, the first gear (2061) is engaged with the gear ring (202), the first sliding block (203) is provided with the first electric push rod (208) inside, the first electric push rod (208) is connected with the pushing piece (207) on the telescopic end, and the pushing piece (207) is in contact with the scraper (204).

2. A yaw pad replacement tool as claimed in claim 1, wherein, The mounting assembly comprises a second sliding block (301), a bracket (302), a top block (303), a second electric push rod (304), a second motor (305), a second gear (306) and a positioning assembly, the guide ring (201) is slidably connected with the second sliding block (301) at a position away from the first sliding block (203), the second sliding block (301) is provided with the second electric push rod (304) inside, the second electric push rod (304) is connected with the bracket (302) for supporting the yaw gasket (105) on the telescopic end, the bracket (302) is symmetrically connected with the top block (303) on the front side, the second sliding block (301) is provided with the second motor (305) on the lower side, the second motor (305) is connected with the second gear (306) on the output shaft, the second gear (306) is engaged with the gear ring (202), and the second sliding block (301) is provided with the positioning assembly.

3. A yaw pad replacement tool as claimed in claim 2, wherein, The positioning assembly comprises a supporting rod (401), a wiping block (402) and an elastic piece (404), the second sliding block (301) is connected with the supporting rod (401) on the top, the supporting rod (401) is rotatably connected with the wiping block (402) on the rear side, the wiping block (402) is connected with the elastic piece (404) between the inner two sides and the supporting rod (401), and the wiping block (402) is provided with the butt joint groove (403) matched with the top block (303) on the bottom.

4. A yaw pad replacement tooling as claimed in claim 3, characterised in that, The wiping block (402) is blocked by the supporting rod (401) on the front side, can only rotate in one direction, and cannot rotate to the front side.

5. A yaw pad replacement tool as claimed in claim 4, wherein, The scraper (204) is rotatably connected with the pressing block (501) at the rear side, two torsion springs (502) are connected between the pressing block (501) and the scraper (204) on both sides, the middle of the pressing block (501) is connected with the rotating block (503), the side of the rotating block (503) close to the pusher (207) is a slope, and the pusher (207) is in contact with the rotating block (503).

6. A yaw pad replacement tool as claimed in claim 5, characterised in that, The yaw big gear ring (104) is symmetrically connected with the support (602) at the bottom, the screw rods (603) are rotatably connected on the support (602), the lifting frames (601) are threadedly connected between the screw rods (603), the expansion rods (605) are symmetrically connected inside the yaw big gear ring (104) at the top, the protection rings (606) are connected to the inner ends of the expansion rods (605), the lifting frames (601) are symmetrically rotatably connected with the articulated rods (607) at the top, the support frames (604) are symmetrically connected to the bottom of the yaw big gear ring (104), the articulated rods (607) are slidably connected with the same side support frames (604), and the upper ends of the articulated rods (607) are rotatably connected with the same side protection rings (606).

7. A yaw pad replacement tool as claimed in claim 6, characterised in that, The power assembly comprises a driving motor (701) and a driving gear (702), the driving motor (701) is installed at the bottom of the support (602), the driving gear (702) is connected to the output shaft of the driving motor (701), and the bottom of the screw rod (603) is also connected with the driving gear (702). The two driving gears (702) on the same side are meshed with each other.

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