Yaw liner replacing tool

Abstract

The invention relates to the technical field of wind power generation, in particular to a yaw liner replacement tool. The yaw gasket replacing tool comprises a tower drum, a cabin, a wind wheel, yaw driving devices, a yaw large gear ring, a yaw gasket, a side face bearing and a jack, the cabin connected in a rotating mode is installed at the top of the tower drum, the wind wheel connected in a rotating mode is installed at the left end of the cabin, the yaw driving devices are installed in the cabin, and the yaw large gear ring and the yaw gasket are installed on the side face bearing. A large yaw gear ring is fixedly connected to the top in the tower drum, a plurality of side bearings used for supporting the cabin are irregularly connected to the inner side of the large yaw gear ring at intervals, and the yaw gasket is located between the bottom of the cabin and the top faces of the side bearings. The first electric push rod serves as a power source to drive the scraper to move, the yaw liner needing to be replaced can be scraped off, automatic disassembly is achieved, the design avoids direct contact of workers with an installation area, and the risk that operators are injured is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a yaw pad replacement tool. Background Art

[0002] The yaw pad is an important part of the yaw system of the wind turbine. Its main function is to reduce the friction and wear generated during the yaw process. During the operation of the wind turbine, frequent yaw operations will cause local wear on the surface of the yaw pad. In addition, if the brake caliper is not installed in parallel, it will cause the local friction to increase, thereby generating noise. This situation will prevent the wind turbine rotor from always facing the wind, thus failing to fully utilize wind energy, and ultimately reducing the power generation efficiency of the wind turbine. At this time, the yaw pad needs to be replaced.

[0003] The traditional tooling replacement method requires operators to carry tools to remove the old yaw pads, carefully take out the old pads and other components using appropriate tools (such as a crowbar), install the new pads, and use the specified adhesive to install the new pads in place according to the instructions. This operation method has the following defects:

[0004] 1. Due to differences in operator skill levels and experience, the results of manual replacement may be inconsistent, resulting in inaccurate gasket installation positions or loose fixation.

[0005] 2. During the replacement process, heavy objects need to be moved manually, especially the removal of the old liner and the installation of the new liner, which requires a lot of physical strength from the operator and makes the installation process extremely inconvenient.

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

[0007] Based on this, in order to solve the above-mentioned technical defects, a yaw pad replacement tool is now proposed. Summary of the invention

[0008] In order to overcome the disadvantages of traditional replacement tooling, which requires manual replacement of yaw pads, that such operation is extremely inconvenient and affects the installation accuracy, an object of the present invention is to provide a yaw pad replacement tool.

[0009] The technical solution is: a yaw pad replacement tool, including a tower, a nacelle, a wind rotor, a yaw drive device, a yaw gear ring, a yaw pad, a side bearing and a jack. A rotatably connected nacelle is installed on the top of the tower, a rotatably connected wind rotor is installed on the left end of the nacelle, multiple yaw drive devices are installed in the nacelle, a yaw gear ring is fixedly connected to the top of the tower, and multiple side bearings for supporting the nacelle are irregularly connected to the inner side of the yaw gear ring. The yaw pad is located between the bottom of the nacelle and the top surface of the side bearing, and the yaw pad is fixed to the top surface of the side bearing through a fixed structure. Two jacks are installed on both sides of the yaw gear ring. The replacement tool also includes a guide ring, a first slider, a scraper, a drive assembly and an installation assembly. A guide ring is connected to the middle of the bottom of the yaw gear ring, a first slider is slidably connected to the upper side of the guide ring, a scraper is slidably connected to the first slider, and a drive assembly and an installation assembly are provided on the guide ring.

[0010] As an improvement of the above-mentioned scheme, the driving assembly includes a gear ring, a return spring, a first motor, a first gear, a pushing member and a first electric push rod. The outer side of the guide ring is connected to the gear 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, the first gear is meshed with the gear ring, the first electric push rod is installed in the first slider, and the push member is connected to the telescopic end of the first electric push rod, and the push member is in contact and cooperate with the scraper.

[0011] As an improvement on the above scheme, 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 a position on the guide ring away from the first slider. The second electric push rod is installed in the second slider. A bracket for supporting a yaw pad is connected to the telescopic end of the second electric push rod. The top block is symmetrically connected to the front side of the bracket. The second motor is installed on the lower side of the second slider. The second gear is connected to the output shaft of the second motor. The second gear is meshed with the gear ring. The second slider is provided with a positioning assembly.

[0012] As an improvement of the above scheme, the positioning assembly includes a support rod, a wiping block and an elastic member. The top of the second slider is connected to the support rod, the rear side of the support rod is rotatably connected to the wiping block, the two sides of the wiping block are connected to the support rod, and the elastic member is connected between the support rod, and the two sides of the bottom of the wiping block are provided with docking grooves that cooperate with the top block.

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

[0014] As an improvement of the above scheme, it also includes a pressure block, a torsion spring and a rotating block. The rear side of the scraper is rotatably connected to the pressure block, two torsion springs are connected between the two sides of the pressure block and the scraper, the middle part of the pressure block is connected to the rotating block, the side of the rotating block close to the pushing member is an inclined surface, and the pushing member is in contact with the rotating block.

[0015] As an improvement of the above scheme, it also includes a lifting frame, a support member, a screw rod, a support frame, a telescopic rod, a protective ring, a hinged rod and a power assembly, the support members are symmetrically connected to the bottom of the yaw gear ring, the support members are rotatably connected to the screw rods, the lifting frame is threadedly connected between the screw rods, the telescopic rods are symmetrically connected to the inner upper side of the yaw gear ring, the inner ends of the telescopic rods are connected to the protective rings, the top of the lifting frame is symmetrically and rotatably connected to the hinged rods, the support frame is symmetrically connected to the bottom of the yaw gear ring, the hinged rods are slidably connected to the support frame on the same side, and the upper ends of the hinged rods are rotatably connected to the protective rings on the same side.

[0016] As an improvement of 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, the drive gear is connected to the output shaft of the drive motor, and the bottom of the screw is also connected to the drive gear. The two drive gears on the same side are meshed with each other.

[0017] Beneficial effects: 1. The first electric push rod is used as a power source to drive the scraper to move, so that the yaw pad that needs to be replaced can be scraped off to achieve 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 send the yaw pad to the top surface of the side bearing for pasting and fixing. During the movement of the yaw pad, the lubricating oil on its top surface can also be applied, which provides convenience for the operator, greatly shortens the replacement time, and improves work efficiency;

[0019] 3. When removing the yaw pad, the pressing block can automatically press the removed yaw pad onto the scraper to prevent it from falling to other places in the tower, ensuring that the removed pad is easy to take;

[0020] 4. After the cabin is lifted up, the protection ring is driven to move outward by driving the motor to isolate the cabin from the yaw gear ring, prevent the cabin from falling due to instability, and increase the safety of the operator during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention.

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

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the yaw gear ring, yaw pad, side bearing, etc. of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide ring, gear ring, first sliding block, etc. of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the scraper, return spring, pusher, etc. of the present invention.

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

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

[0029] Fig. 9 It is a schematic diagram of the three-dimensional structure of the pusher, the pressure block, the torsion spring, etc. of the present invention.

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the second sliding block, bracket, guide ring, etc. of the present invention.

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

[0032] Fig.12 It is a schematic diagram of the three-dimensional structure of the support rod, the blocking rod, the docking groove, etc. of the present invention.

[0033] Fig.13 It is a schematic cross-sectional view of the support rod, the baffle rod and the elastic member of the present invention.

[0034] Fig.14 It is a schematic diagram of the three-dimensional structure of the lifting frame, screw rod, support frame, etc. of the present invention.

[0035] Fig.15 It is a schematic diagram of the three-dimensional structure of the telescopic rod, protective ring, hinged rod, etc. of the present invention.

[0036] Fig.16 It is a schematic diagram of the three-dimensional structure of the support member, lifting frame, screw rod, etc. of the present invention.

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

[0038] Names of the reference numerals in the figure: 1, tower, 101, cabin, 102, wind wheel, 103, yaw drive device, 104, yaw gear ring, 105, yaw pad, 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, pusher, 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, docking groove, 404, elastic member, 501, pressure block, 502, torsion spring, 503, rotating block, 601, lifting frame, 602, support member, 603, screw rod, 604, support frame, 605, telescopic rod, 606, protective ring, 607, hinged rod, 701, drive motor, 702, drive gear. DETAILED DESCRIPTION

[0039] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0040] Embodiment 1: A yaw pad replacement tool, such as Figure 1-Figure 7 and Figure 10-13 As shown, the tower 1, the nacelle 101, the wind wheel 102, the yaw drive device 103, the yaw gear ring 104, the yaw pad 105, the side bearing 106, the jack 107, the guide ring 201, the first slider 203, the scraper 204, the drive assembly and the installation assembly are included. The nacelle 101 is rotatably connected to the top of the tower 1, and the wind wheel 102 is rotatably connected to the left end of the nacelle 101. A plurality of yaw drive devices 103 are installed in the nacelle 101. The top of the tower 1 is fixedly connected to the yaw gear ring 104, and a plurality of yaw gears for supporting the yaw gear ring 104 are irregularly connected to 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 through a fixing structure. Two jacks 107 for lifting the nacelle 101 are installed on the front and rear sides of the yaw gear ring 104. A guide ring 201 is welded in 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. A driving assembly and a mounting assembly are provided on the guide ring 201.

[0041] like Figure 3 and Figure 5-Figure 7As shown, the driving assembly includes a gear ring 202, a return spring 205, a first motor 206, a first gear 2061, a pushing member 207 and a first electric push rod 208. The gear ring 202 is connected to the outer side 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 installed on the lower side of the first slider 203 by bolts, the first gear 2061 is connected to the output shaft of the first motor 206, the first gear 2061 is meshed with the gear ring 202, the first electric push rod 208 is installed in the first slider 203 by bolts, the push member 207 is connected to the telescopic end of the first electric push rod 208, and the push member 207 is in contact with the scraper 204.

[0042] like Figure 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 a position on the guide ring 201 away from the first slider 203. The second electric push rod 304 is installed in 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 block 303 is symmetrically welded on 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 is meshed with the gear ring 202. The second slider 301 is provided with a positioning assembly.

[0043] like Figure 12-13 As shown, the positioning assembly includes a support rod 401, a wiping block 402 and an elastic member 404. The top of the second slider 301 is connected to the support rod 401, and the rear side of the support rod 401 is rotatably connected to the wiping block 402 for applying lubricating oil. Elastic members 404 are connected between the left and right sides of the wiping block 402 and the support rod 401. The left and right sides of the bottom of the wiping block 402 are provided with docking 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 toward the front side.

[0044] The yaw pad 105 is an important component of the yaw system of the wind turbine generator set. It is mainly responsible for reducing the friction and wear generated during the yaw process. The yaw pad 105 will wear out after long-term use, and then generate noise. If you want to replace it, when operating, first switch the wind turbine generator set to service mode and cut off the relevant power supply to ensure safety, then enter the tower 1, prepare the tools required for replacement, first lift the cabin 101 upwards through the jack 107 to facilitate the replacement of the yaw pad 105, then remove the relevant fixing bolts, and then start the first motor 206. The output shaft of the first motor 206 rotates to drive the first gear 2061 to rotate. The first gear 2061 is engaged with the gear ring 202 and will rotate circumferentially along the gear ring 202, driving The first slider 203 rotates along the guide ring 201, and the 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 started. The telescopic end of the first electric push rod 208 extends to drive the pushing member 207 to move outward. After the pushing member 207 contacts the scraper 204, the scraper 204 is pushed to move in the direction of the yaw pad 105. The reset spring 205 is stretched, and the old yaw pad 105 can be scraped off by the scraper 204 to make it detach from the top surface of the side bearing 106. There is no need to manually complete the disassembly action. After the disassembly is completed, the first electric push rod 208 is controlled to reset and automatically close. The telescopic end of the first electric push rod 208 shortens and drives The pushing member 207 moves inwardly to reset, and no longer resists the scraper 204. The reset spring 205 rebounds and resets, driving the scraper 204 to gradually move inwardly to reset. According to the above operation, the remaining yaw pads 105 are disassembled one by one. During operation, the first motor 206 can be controlled to run forward or reversely according to the position of the yaw pad 105 to drive the first slider 203 to rotate forward or reverse 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 to drive the second gear 306 to rotate and make it rotate circumferentially along the gear ring 202, so as to drive the second slider 301 and the components thereon to rotate. After the side bearing 106 is precisely aligned, the second motor 305 is turned off, and 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 the position in contact with the bracket 302, and then the second electric push rod 304 is started. The position of the extension end of the second electric push rod 304 is precisely adjusted, and the extension of the extension end drives the bracket 302 and the top block 303 to move outward, and then drives the yaw pad 105 to move outward close 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 member 404 is deformed. The wiping block 402 is pre-absorbed with lubricating oil, and the wiping block 402 rotates to contact the top surface of the yaw pad 105.Lubricating oil will be applied to the top surface of the yaw pad 105, and 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 over the wiping block 402, the elastic member 404 rebounds and resets, driving the wiping block 402 to reverse and reset. When the telescopic end of the second electric push rod 304 is extended to the preset position, the bracket 302 moves with the new yaw pad 105 to the top surface of the corresponding side bearing 106, and the telescopic end of the second electric push rod 304 is shortened and reset, driving the bracket 302 and the top block 303 to move inward and reset. The top block 303 passes through the docking groove 403 and moves to the front side, and the yaw pad 105 on the bracket 302 will be blocked by the wiping block 402. Because the front side of the wiping block 402 is blocked by the support rod 401, the wiping block 402 cannot move forward, the bracket 302 moves forward, so that the yaw pad 105 remains on the top surface of the side bearing 106, and is attached to the top surface of the side bearing 106 through the adhesive on the bottom surface. After the telescopic end of the second electric push rod 304 is reset, it will automatically close, thus completing the automatic installation of the yaw pad 105 without manual intervention. Then, the relevant fixing bolts are installed to fix the yaw pad 105 on the side bearing 106. The remaining yaw pads 105 are installed according to the above operation. After the replacement of the yaw pad 105 is completed, the power supply of the relevant equipment is turned off, and the jack 107 is reset to lower and reset the nacelle 101. The replaced yaw pad 105 continues to protect the nacelle 101 when it is yawed, and the wind turbine generator set can resume normal operation.

[0045] Embodiment 2: Based on embodiment 1, Figure 8-Figure 9 As shown, it also includes a pressure block 501, a torsion spring 502 and a rotating block 503. The rear side of the scraper 204 is rotatably connected with a pressure block 501 for pressing the removed yaw pad 105. Two torsion springs 502 are connected between the left and right sides of the pressure block 501 and the scraper 204. The middle part of the pressure block 501 is connected to a rotating block 503. The side of the rotating block 503 close to the pushing member 207 is an inclined surface, and the pushing member 207 is in contact with the rotating block 503.

[0046] When the yaw pad 105 is scraped off for replacement by the scraper 204, the telescopic end of the first electric push rod 208 extends outward, driving the pushing member 207 to move outward, and the pushing member 207 will first contact the rotating block 503, and then push the bevel angle of the inclined surface of the rotating block 503, pushing the rotating block 503 to rotate, driving the pressing block 501 to rotate, and the torsion spring 502 is deformed to make the pressing block 501 in a vertical state. The pushing member 207 continues to move and drives the scraper 204 to move outward to disassemble the yaw pad 105. The scraper 204 scrapes the yaw pad 105 and pushes the yaw pad 105 to the scraper 2 04, after the yaw pad 105 is scraped off, the telescopic end of the first electric push rod 208 shortens and resets, driving the pushing member 207 to reset, and then disengages from the rotating block 503, and the torsion spring 502 rebounds and resets, causing the pressing block 501 and the rotating block 503 to reverse and reset, and the pressing block 501 will press the yaw pad 105 scraped off from the scraper 204. When the scraper 204 is reset, it moves the yaw pad 105 inward and resets, so that it is convenient for the operator to remove the yaw pad 105 from the scraper 204, avoiding it from falling to other places during the disassembly process, making it inconvenient to take it.

[0047] like Figure 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 hinged rod 607 and a power assembly. The bottom of the yaw gear ring 104 is symmetrically welded with a support member 602, and the support member 602 is rotatably connected with a screw 603. The lifting frame 601 is threadedly connected between the screws 603. The telescopic rod 605 is symmetrically connected to the upper inner side of the yaw gear ring 104. The telescopic rod 605 is symmetrically connected to the upper inner side of the yaw gear ring 104. 05 The inner end is connected with a protective ring 606, which moves to the top surface of the yaw gear ring 104 to separate the yaw gear ring 104 from the cabin 101. The top of the lifting frame 601 is symmetrically and rotatably connected with an articulated rod 607, and the bottom of the yaw gear ring 104 is symmetrically connected with a support frame 604. The articulated rods 607 are slidably connected to the support frame 604 on the same side, and the upper ends of the articulated rods 607 are rotatably connected to the protective ring 606 on the same side.

[0048] like Figure 16-Figure 17 As shown, the power assembly includes a driving motor 701 and a driving gear 702. The driving motor 701 is installed on the bottom of the support member 602 by bolts. The driving gear 702 is connected to the output shaft of the driving motor 701. The driving gear 702 is also connected to the bottom of the screw rod 603. The two driving gears 702 on the same side are meshed with each other.

[0049] When the nacelle 101 is lifted up by the jack 107 to replace the yaw pad 105, the drive motor 701 can be started. The drive motor 701 drives the screw 603 to rotate through the rotation of the two drive gears 702. The rotation of the screw 603 drives the lifting frame 601 to move upward. The lifting frame 601 pushes the hinged rod 607 to rotate. The hinged rod 607 slides along the support frame 604. At the same time, the hinged rod 607 pushes the protective ring 606 to move outward, and the telescopic rod 605 is shortened accordingly. When the protective ring 606 moves to the top surface of the yaw gear ring 104, the drive motor 701 is automatically turned off. At this time, the protective ring 606 can separate the nacelle 101 from the yaw gear ring 104. The cabin 101 and the yaw gear ring 104 play a protective role. During the replacement of the yaw pad 105, if the cabin 101 becomes unstable and accidentally drops, the protective ring 606 can support the cabin 101 to prevent the operator from being injured. After the yaw pad 105 is replaced, the drive motor 701 can be controlled to operate in the reverse direction, and the screw 603 is driven to reverse through the driving gear 702. The screw 603 drives the lifting frame 601 to move downward, pushing the articulated rod 607 to reverse, and the articulated rod 607 pulls the protective ring 606 to move inward to reset, and the telescopic rod 605 extends accordingly. After resetting, the drive motor 701 is automatically turned off.

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

Claims

1. A yaw pad replacement tool, comprising a tower (1), a nacelle (101), a wind rotor (102), a yaw drive device (103), a yaw gear ring (104), a yaw pad (105), a side bearing (106) and a jack (107), wherein a rotatably connected nacelle (101) is mounted on the top of the tower (1), a rotatably connected wind rotor (102) is mounted on the left end of the nacelle (101), and a plurality of yaw drive devices (103) are mounted in the nacelle (101). A yaw gear ring (104) is fixedly connected to the top of the tower (1), a plurality of side bearings (106) for supporting a nacelle (101) are connected to the inside of the yaw gear ring (104) at irregular intervals, a yaw pad (105) is 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) through a fixing structure, and two jacks (107) are installed on both sides of the yaw gear ring (104), wherein: The replacement tooling also includes a guide ring (201), a first slider (203), a scraper (204), a drive assembly and a mounting assembly; the guide ring (201) is connected to the middle of the bottom of the yaw gear ring (104); the first slider (203) is slidably connected to the upper side of the guide ring (201); the scraper (204) is slidably connected to the first slider (203); and the drive assembly and the mounting assembly are provided on the guide ring (201).

2. A yaw pad replacement tool as claimed in claim 1, characterized in that: The driving assembly comprises 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 outer side of the guide ring (201) is connected with the gear ring (202); two return springs (205) are connected between the scraper (204) and the first slider (203); the lower side of the first slider (203) is equipped with the first motor (206); the output shaft of the first motor (206) is connected with the first gear (2061); the first gear (2061) is meshed with the gear ring (202); the first electric push rod (208) is installed in the first slider (203); the telescopic end of the first electric push rod (208) is connected with the pusher (207); the pusher (207) is in contact with the scraper (204).

3. A yaw pad replacement tool as claimed in claim 2, characterized in that: The mounting assembly comprises 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 a position on the guide ring (201) away from the first slider (203). The second electric push rod (304) is installed in the second slider (301). The telescopic end of the second electric push rod (304) is connected to a bracket (302) for supporting a yaw pad (105). The top block (303) is symmetrically connected to the front side of the bracket (302). The second motor (305) is installed on the lower side of the second slider (301). The second gear (306) is connected to the output shaft of the second motor (305). The second gear (306) is meshed with the gear ring (202). The second slider (301) is provided with a positioning assembly.

4. A yaw pad replacement tool as claimed in claim 3, characterized in that: The positioning assembly comprises a support rod (401), a wiping block (402) and an elastic member (404); the top of the second sliding block (301) is connected to the support rod (401); the rear side of the support rod (401) is rotatably connected to the wiping block (402); elastic members (404) are connected between the two sides of the wiping block (402) and the support rod (401); and docking grooves (403) cooperating with the top block (303) are provided on both sides of the bottom of the wiping block (402).

5. The yaw pad replacement tool as claimed in claim 4, characterized in that: 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 toward the front side.

6. A yaw pad replacement tool as claimed in claim 5, characterized in that: The scraper (204) further comprises a pressing block (501), a torsion spring (502) and a rotating block (503); the rear side of the scraper (204) is rotatably connected to the pressing block (501); two torsion springs (502) are connected between the two sides of the pressing block (501) and the scraper (204); the middle part of the pressing block (501) is connected to the rotating block (503); the side of the rotating block (503) close to the pushing member (207) is an inclined surface; the pushing member (207) is in contact with the rotating block (503).

7. A yaw pad replacement tool as claimed in claim 6, characterized in that: The invention also includes a lifting frame (601), a support member (602), a screw rod (603), a support frame (604), a telescopic rod (605), a protective ring (606), a hinge rod (607) and a power assembly. The bottom of the yaw gear ring (104) is symmetrically connected to the support member (602). The support member (602) is rotatably connected to the screw rod (603). The lifting frame (601) is threadedly connected between the screw rods (603). 4) A telescopic rod (605) is symmetrically connected to the inner upper side, and a protective ring (606) is connected to the inner end of the telescopic rod (605). The top of the lifting frame (601) is symmetrically rotatably connected to an articulated rod (607). The bottom of the yaw gear ring (104) is symmetrically connected to a support frame (604). The articulated rods (607) are slidably connected to the support frame (604) on the same side, and the upper ends of the articulated rods (607) are rotatably connected to the protective ring (606) on the same side.

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

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