A wind turbine yaw brake disc repairing device

Abstract

The application provides a wind turbine yaw brake disc repairing device, which comprises a fixing support, a moving mechanism, and a milling mechanism. The fixing support is fixedly connected with a brake provided on a nacelle of a wind turbine. The moving mechanism comprises a first moving member and a second moving member arranged on the first moving member. The first moving member is arranged on one side wall of the fixing support, and the second moving member moves up and down along the arrangement direction of the first moving member. The milling mechanism is arranged on the second moving member and moves left and right along the arrangement direction of the second moving member. The top end of the milling mechanism is provided with a camera and a ranging laser. The camera is used for shooting the wear width of the wind turbine yaw brake disc, and the ranging laser is used for measuring the distance between the milling cutter disc of the milling mechanism and the surface of the wind turbine yaw brake disc. The application can effectively repair the wear parts of the brake disc, has a high repairing speed, reduces the downtime and maintenance cost, and improves the operation efficiency and economic benefits of the wind turbine.

Description

Technical Field

[0001] This application belongs to the technical field of wind turbine yaw brake disc repair facilities, and particularly relates to a wind turbine yaw brake disc repair device. Background Technology

[0002] The yaw brake disc is an important component of wind turbine generators, used to control the rotation of the rotor to ensure that the wind turbine always faces the wind. However, during long-term operation, due to various factors such as wear and corrosion, the yaw brake disc may experience excessive wear, affecting its normal operation and the stable operation of the wind turbine generator.

[0003] Existing repair methods require disassembling and replacing the entire brake disc. Disassembly typically requires the wind turbine impeller, generator, gearbox, and nacelle to be lowered by a crane before replacement can be carried out. After replacement, the nacelle, generator, gearbox, wind turbine impeller, and other components must be reinstalled. This not only makes replacement time-consuming and labor-intensive, but also results in significant losses in labor and power generation, leading to increased repair costs. Utility Model Content

[0004] In view of this, this application aims to propose a yaw brake disc repair device for wind turbines to solve the problems of inconvenient and costly repair of brake discs.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows:

[0006] This application provides a yaw brake disc repair device for wind turbine generators, comprising:

[0007] A fixed bracket is fixedly connected to a brake installed on the nacelle of the wind turbine.

[0008] The moving mechanism includes a first moving component and a second moving component disposed on the first moving component. The first moving component is mounted on one side wall of the fixed bracket, and the second moving component moves up and down along the setting direction of the first moving component.

[0009] A milling mechanism is provided, which is mounted on the second moving member and moves left and right along the setting direction of the second moving member. A camera and a ranging laser are mounted on the top of the milling mechanism. The camera is used to capture the wear width of the yaw brake disc of the wind turbine, and the ranging laser is used to measure the distance between the milling cutter disk of the milling mechanism and the surface of the yaw brake disc of the wind turbine.

[0010] Furthermore, the fixed bracket is composed of a connecting plate, an adapter plate, and a mounting plate. One end of the connecting plate is fixedly connected to the brake by a fastener, and the other end is fixedly connected to the adapter plate by a fastener. The mounting plate is disposed on the side of the adapter plate near the brake.

[0011] Furthermore, the first moving component includes an upper first dovetail, a lower first dovetail, a first lead screw, a first slider, a first drive motor, and a first locking plate;

[0012] The first dovetail is fixedly connected to the mounting plate, and the first dovetail has a built-in accommodating space. The first lead screw passes through the accommodating space and is rotatably connected to the first dovetail. The first slider is disposed on the first lead screw, and the first dovetail is fixedly connected to the first slider and slides with the first dovetail.

[0013] The first drive motor is located at the end away from the connecting plate, and the output end of the first drive motor is connected to the first lead screw;

[0014] The first locking plate is disposed on one side of the first dovetail and the first dovetail below. The first locking plate has a plurality of first locking holes, and fasteners pass through the first locking holes and are fixedly connected to the first dovetail and the first dovetail below, respectively.

[0015] Furthermore, the second moving component includes an upper second dovetail, a lower second dovetail, a second lead screw, a second slider, a second drive motor, and a second locking plate;

[0016] Wherein, the lower part of the second dovetail is fixedly connected to the upper part of the first dovetail of the first moving member, and the lower part of the second dovetail has a built-in accommodating space. The second lead screw passes through the accommodating space and is rotatably connected to the lower part of the second dovetail. The second slider is disposed on the second lead screw. The upper part of the second dovetail is fixedly connected to the second slider and slides with the lower part of the second dovetail. The output end of the second drive motor is connected to the second lead screw.

[0017] The second locking plate is disposed on one side of the second dovetail and the second dovetail bottom. The second locking plate has a plurality of second locking holes, and fasteners pass through the second locking holes and are fixedly connected to the second dovetail and the second dovetail bottom respectively.

[0018] Furthermore, the milling mechanism includes a bearing support, a milling motor, a connecting spindle, a spindle seat, a milling cutter head, and milling inserts;

[0019] The bearing support is fixedly connected to the second dovetail of the second moving component. The connecting spindle is correspondingly installed in the bearing support. The milling motor is set at the bottom end of the bearing support through a motor support. The output shaft end of the milling motor is connected to the connecting spindle through a coupling. The spindle seat is fixedly set at the top end of the connecting spindle. The milling cutter head is fixedly connected to the spindle seat.

[0020] The edge protrusion of the milling cutter disc has several gaps at intervals, and the gaps are provided with mounting positions for mounting the milling cutter blades. The milling cutter blades are mounted in the gaps of the milling cutter disc by fasteners.

[0021] Furthermore, the milling cutter disc has multiple mounting holes at its central position, and the camera and the ranging laser are respectively mounted in the mounting holes.

[0022] Furthermore, in response to severe wear, the repair device is controlled to mill and repair the yaw brake disc, bond the metal insert to the yaw brake disc, and fix the metal insert to the yaw brake disc with fasteners.

[0023] Compared with the prior art, the yaw brake disc repair device for wind turbines described in this application has the following advantages:

[0024] The repair device described in this application can effectively repair worn parts of the brake disc without hoisting. After repair, it meets the operational adjustment requirements in terms of both size and precision. Moreover, the repair speed is fast, reducing downtime and maintenance costs, and improving the operating efficiency and economic benefits of the wind turbine generator set. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of a wind turbine yaw brake disc repair device according to an embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the first angle structure of the first moving component according to an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the second angle structure of the first moving component according to an embodiment of this application;

[0029] Figure 4 This is a cross-sectional view of the milling mechanism described in the embodiments of this application;

[0030] Figure 5This is a schematic diagram showing some details of the milling mechanism described in the embodiments of this application.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1-Fixed bracket; 101-Connecting plate; 102-Adapter plate; 103-Mounting plate; 2-First moving component; 201-Upper dovetail of the first dovetail; 202-Lower dovetail of the first dovetail; 203-First lead screw; 204-First slider; 205-First drive motor; 206-First locking plate; 3-Second moving component; 4-Milling mechanism; 401-Bearing support; 402-Milling motor; 403-Connecting spindle; 404-Spindle seat; 405-Milling cutter head; 406-Milling insert; 407-Motor support; 408-Coupling; 5-Camera; 6-Range laser; 7-Brake. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0034] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but does not exclude other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can refer to any connection.

[0035] This includes electrical connections, whether direct or indirect. Terms like "up," "down," "left," and "right" are used only to indicate relative positional relationships; these relative relationships may change if the absolute position of the object being described changes.

[0036] Please see Figure 1 and Figure 5 As shown, this embodiment provides a yaw brake disc repair device for wind turbines, including:

[0037] Fixed bracket 1, fixedly connected to brake 7 installed on the nacelle of wind turbine unit;

[0038] The moving mechanism includes a first moving component 2 and a second moving component 3 disposed on the first moving component 2. The first moving component 2 is mounted on one side wall of the fixed bracket 1, and the second moving component 3 moves up and down along the setting direction of the first moving component 2.

[0039] The milling mechanism 4 is mounted on the second moving member 3 and moves left and right along the setting direction of the second moving member 3. The top of the milling mechanism 4 is equipped with a camera 5 and a distance measuring laser 6. The camera 5 is used to photograph the wear width of the yaw brake disc of the wind turbine, and the distance measuring laser 6 is used to measure the distance between the milling cutter 405 of the milling mechanism 4 and the surface of the yaw brake disc of the wind turbine.

[0040] Specifically, in this embodiment, the entire device is installed on the yaw nacelle of the wind turbine (corresponding to the fixing threaded hole of the brake 7). After installation, the repair device is started. First, the yaw brake disc surface is photographed by camera 5 to determine the width of the brake disc wear. The second moving component 3 (i.e., the Y-axis moving component) motor is rotated to drive the milling mechanism 4 to move back and forth to the appropriate position. After adjustment, the position is locked with a locking plate. Then, the vertical distance is determined by laser ranging (non-contact measurement). The first moving component 2 (i.e., the Z-axis moving component) motor rotates to drive the milling mechanism 4 to move up and down to the appropriate position. The equipment is started, the cutter head rotates, and by operating the wind turbine nacelle button, the entire device is driven to make a circular motion through left and right yaw, thereby performing high-precision milling on the wind turbine yaw brake disc. After repair, not only can the scratches on the surface of the yaw brake disc be removed, but the repaired surface is also flat. Moreover, the operation safety of the wind turbine is ensured, and the traditional hoisting replacement is eliminated, which has greater application value.

[0041] The yaw brake disc repair device for wind turbines described in this embodiment can effectively repair worn parts of the brake disc without hoisting. After repair, the device meets operational requirements in terms of both size and precision. Furthermore, the repair is fast, reducing downtime and maintenance costs, and improving the operating efficiency and economic benefits of wind turbines. Therefore, the on-site repair technology for wind turbine yaw brake discs is of great significance for improving wind energy utilization efficiency and promoting the development of renewable energy.

[0042] In some embodiments, the fixed bracket 1 is composed of a connecting plate 101, an adapter plate 102 and a mounting plate 103. One end of the connecting plate 101 is fixedly connected to the brake 7 by a fastener (which may be a screw or a bolt), and the other end is fixedly connected to the adapter plate 102 by a fastener. The mounting plate 103 is disposed on the side of the adapter plate 102 near the brake 7.

[0043] Specifically, in this embodiment, one end of the connecting plate 101 is connected to the mounting position of the wind turbine nacelle brake 7 by bolts, and the other end is connected to the adapter plate 102 (right angle iron) by bolts. The other end of the adapter plate 102 is connected to the mounting plate 103 by bolts. The mounting plate 103 is located on the side close to the brake 7. The first moving member 2 is mounted on the mounting plate 103 by bolts, and the first moving member 2 can move up and down.

[0044] In some implementations, such as Figure 2 and Figure 3 As shown, the first moving component 2 includes a first dovetail upper part 201, a first dovetail lower part 202, a first lead screw 203, a first slider 204, a first drive motor 205, and a first locking plate 206;

[0045] The first dovetail lower 202 is fixedly connected to the mounting plate 103, and the first dovetail lower 202 has a built-in accommodating space. The first lead screw 203 passes through the accommodating space and is rotatably connected to the first dovetail lower 202. The first slider 204 is disposed on the first lead screw 203. The first dovetail upper 201 is fixedly connected to the first slider 204 and slides with the first dovetail lower 202.

[0046] The first drive motor 205 is located at the end away from the connecting plate 101, and the output end of the first drive motor 205 is connected to the first lead screw 203;

[0047] The first locking plate 206 is disposed on one side of the first dovetail upper 201 and the first dovetail lower 202. The first locking plate 206 has a plurality of first locking holes, and fasteners pass through the first locking holes and are fixedly connected to the first dovetail upper 201 and the first dovetail lower 202 respectively.

[0048] Specifically, in this embodiment, the first drive motor 205 rotates, driving the trapezoidal slider mounted on the first lead screw 203 to move, thereby driving the Z-axis dovetail to reciprocate. The upper and lower parts of the Z-axis dovetail are fixed in relative displacement by the first locking plate 206.

[0049] In some embodiments, the second moving member 3 (the second moving member 3 has the same specific structure as the first moving member 2, so the detailed structure of the moving member is not shown in the drawings) includes a second dovetail upper part, a second dovetail lower part, a second lead screw, a second slider, a second drive motor, and a second locking plate;

[0050] The second dovetail is fixedly connected to the first dovetail 201 of the first moving member 2, and the second dovetail has a built-in accommodating space. The second lead screw passes through the accommodating space and is rotatably connected to the second dovetail. The second slider is set on the second lead screw. The second dovetail is fixedly connected to the second slider and slides with the second dovetail. The output end of the second drive motor is connected to the second lead screw.

[0051] The second locking plate is located on one side of the second dovetail and the second dovetail, and the second locking plate has multiple second locking holes. Fasteners pass through the second locking holes and are fixedly connected to the second dovetail and the second dovetail respectively.

[0052] Specifically, in this embodiment, the second drive motor rotates, driving the trapezoidal slider mounted on the second lead screw to move, thereby driving the Y-axis dovetail to reciprocate. The upper and lower parts of the Y-axis dovetail are fixed in relative displacement by the second locking plate.

[0053] In some implementations, such as Figure 1 , Figure 4 and Figure 5 As shown, the milling mechanism 4 includes a bearing support 401, a milling motor 402, a connecting spindle 403, a spindle seat 404, a milling cutter disc 405, and a milling cutter blade 406;

[0054] The bearing support 401 is fixedly connected to the second dovetail of the second moving component 3. The connecting spindle 403 is correspondingly installed in the bearing support 401. The milling motor 402 is set at the bottom of the bearing support 401 through the motor support 407. The output shaft end of the milling motor 402 is connected to the connecting spindle 403 through the coupling 408. The spindle seat 404 is fixedly set at the top of the connecting spindle 403. The milling cutter disc 405 is fixedly connected to the spindle seat 404.

[0055] The edge protrusion of the milling cutter head 405 has several gaps reserved at intervals. The gaps are provided with mounting positions for milling cutter inserts 406. The milling cutter inserts 406 are installed in the gaps of the milling cutter head 405 by fasteners.

[0056] Specifically, in this embodiment, the rotation of the milling motor 402 is transmitted to the connecting spindle 403 through the coupling 408. The rotation of the connecting spindle 403 drives the spindle seat 404, the milling cutter disc 405, and the milling cutter 406 to rotate, thereby performing planar milling.

[0057] In some embodiments, the milling cutter head 405 has multiple mounting holes at its central position, and the camera 5 and the ranging laser 6 are respectively mounted in the mounting holes.

[0058] Specifically, in this embodiment, both the camera 5 and the ranging laser 6 are connected to the backend control system.

[0059] After the yaw brake disc of the wind turbine is installed, the wear width of the brake disc is first determined by the lens of camera 5 and the data is transmitted to the control system. Then, the ranging laser 6 is activated to measure the distance between the milling cutter 405 and the surface of the brake disc and feeds it back to the control system. The control system sends the movement command to the first drive motor 205 and the second drive motor according to the feedback data, thereby driving the first moving component 2 and the second moving component 3 to move. At the same time, the milling mechanism 4 is activated to mill the brake disc by the left and right yaw of the wind turbine.

[0060] In some implementations, in response to severe wear, the repair device is controlled to mill and repair the yaw brake disc, bond a metal insert to the yaw brake disc, and secure the metal insert to the yaw brake disc with fasteners.

[0061] Specifically, in this embodiment, different repair methods are formulated according to the wear degree of the brake disc (light wear and heavy wear). For example, in response to light wear, the surface of the brake disc needs to be milled and repaired, and the yaw brake disc is repaired to an operable state by means of milling cutter 406; in response to heavy wear, the repair device is controlled to mill and repair the yaw brake disc, and the metal insert is repaired by the method of "adhesive bonding + screw connection".

[0062] I. Surface milling repair methods are as follows:

[0063] ① Measurement of yaw brake disc wear

[0064] Clean the yaw brake disc of the wind turbine unit of oil and other contaminants, and then use camera 5 and rangefinder laser 6 to measure multiple areas on the brake disc to determine the maximum wear.

[0065] ② Shut down the hydraulic system and release the pressure.

[0066] Shut down the hydraulic system of yaw brake 7 and depressurize it to ensure there is no pressure in the oil line.

[0067] ③ Remove one set of yaw brakes 7

[0068] Remove the hydraulic hoses from a set of yaw brakes 7 and connect them to other brake calipers to ensure that the other brakes 7 can work after the hydraulic system is restored. Then, use a hydraulic wrench to loosen the bolts on the brakes 7 and remove a set of yaw brakes 7.

[0069] ④ Install wind turbine generator set and repair yaw brake disc device

[0070] Install the wind turbine yaw brake disc repair device at the position of the removed set of yaw brakes 7, and fix it with bolts.

[0071] ⑤ Milling the yaw brake disc device for repair using a wind turbine unit

[0072] Mark the thickness of each area of ​​the yaw brake disc to facilitate the determination of the amount of repair required. Start the repair device, and at the same time, the yaw fan drives the yaw brake disc repair device to perform milling operations on the yaw brake disc. After milling, the surface flatness of the yaw brake disc meets the requirements, and the dimensions meet the requirements of the insert.

[0073] ⑥ Measure and accept the yaw brake disc.

[0074] The repaired yaw brake disc was measured for thickness, surface roughness, and planar adjustment to ensure it met the requirements.

[0075] ⑦ Disassemble and repair the yaw brake disc assembly, and reinstall the yaw brake.

[0076] The yaw brake disc repair device was disassembled, the removed yaw brake 7 was reinstalled, and the hydraulic oil pipes were restored.

[0077] ⑧ Trial run

[0078] By yawing the left and right wind turbine units, listen for any abnormal noises between the yaw brake disc and the yaw brake 7 to confirm normal operation.

[0079] ⑨ Officially in operation

[0080] Clean the wind turbine, remove personnel from the tower, officially start the wind turbine, and connect it to the grid.

[0081] II. Repair methods for adhesive and screw connections are as follows:

[0082] ① Measurement of yaw brake disc wear

[0083] Clean the yaw brake disc of the wind turbine unit of oil and other contaminants, and then use camera 5 and rangefinder laser 6 to measure multiple areas on the brake disc to determine the maximum wear.

[0084] ② Shut down the hydraulic system and release the pressure.

[0085] Shut down the hydraulic system of yaw brake 7 and depressurize it to ensure there is no pressure in the oil line.

[0086] ③ Remove one set of yaw brakes 7

[0087] Remove the hydraulic hoses from a set of yaw brakes 7 and connect them to other brake calipers to ensure that the other brakes 7 can work after the hydraulic system is restored. Then, use a hydraulic wrench to loosen the bolts on the brakes 7 and remove a set of yaw brakes 7.

[0088] ④ Install wind turbine generator set and repair yaw brake disc device

[0089] Install the wind turbine yaw brake disc repair device at the position of the removed set of yaw brakes 7 and secure it with bolts.

[0090] ⑤ Milling the yaw brake disc device for repair using a wind turbine unit

[0091] Mark the thickness of each area of ​​the yaw brake disc to facilitate the determination of the amount of repair required. Start the repair device, and at the same time, the yaw fan drives the yaw brake disc repair device to perform milling operations on the yaw brake disc. After milling, the surface flatness of the yaw brake disc meets the requirements, and the dimensions meet the requirements of the insert.

[0092] ⑥ Clean the yaw brake disc

[0093] Clean the surface of the yaw brake disc of iron filings and other debris generated during milling to prepare for the insert.

[0094] ⑦ Install metal inserts of the same material as the brake discs.

[0095] Remove rust from the surface of the metal insert and apply high-strength metal structural adhesive. Then, attach the metal insert tightly to the yaw brake disc and tighten it with F-clamps. Wait for the adhesive to cure. After the adhesive has cured, tap threaded holes on the brake disc and fix the insert to the yaw brake disc with bolts for double protection.

[0096] ⑧ Secondary repair of yaw brake disc device, precision dimensions

[0097] The yaw brake disc device was repaired a second time, and its dimensions were refined to ensure that its final dimensions and surface flatness met the operational requirements.

[0098] ⑨ Measure and accept the yaw brake disc.

[0099] The repaired yaw brake disc was measured for thickness, surface roughness, and planar adjustment to ensure it met the requirements.

[0100] ⑩ Disassemble and repair the yaw brake disc assembly, and reinstall the yaw brake 7

[0101] The yaw brake disc repair device was disassembled, the removed yaw brake 7 was reinstalled, and the hydraulic oil pipes were restored.

[0102] ⑪ Trial run

[0103] By yawing the left and right wind turbine units, listen for any abnormal noises between the yaw brake disc and the yaw brake 7 to confirm normal operation.

[0104] ⑫ Officially in operation

[0105] Clean the wind turbine, remove personnel from the tower, officially start the wind turbine, and connect it to the grid.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0107] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A repair device for the yaw brake disc of a wind turbine, characterized in that, include: A fixed bracket is fixedly connected to a brake installed on the nacelle of the wind turbine. The moving mechanism includes a first moving component and a second moving component disposed on the first moving component. The first moving component is mounted on one side wall of the fixed bracket, and the second moving component moves up and down along the setting direction of the first moving component. A milling mechanism is provided, which is mounted on the second moving member and moves left and right along the setting direction of the second moving member. A camera and a ranging laser are mounted on the top of the milling mechanism. The camera is used to capture the wear width of the yaw brake disc of the wind turbine, and the ranging laser is used to measure the distance between the milling cutter disk of the milling mechanism and the surface of the yaw brake disc of the wind turbine.

2. The wind turbine yaw brake disc repair device according to claim 1, characterized in that: The fixed bracket consists of a connecting plate, an adapter plate, and a mounting plate. One end of the connecting plate is fixedly connected to the brake by fasteners, and the other end is fixedly connected to the adapter plate by fasteners. The mounting plate is located on the side of the adapter plate near the brake.

3. The wind turbine yaw brake disc repair device according to claim 2, characterized in that: The first moving component includes an upper first dovetail, a lower first dovetail, a first lead screw, a first slider, a first drive motor, and a first locking plate; The first dovetail is fixedly connected to the mounting plate, and the first dovetail has a built-in accommodating space. The first lead screw passes through the accommodating space and is rotatably connected to the first dovetail. The first slider is disposed on the first lead screw, and the first dovetail is fixedly connected to the first slider and slides with the first dovetail. The first drive motor is located at the end away from the connecting plate, and the output end of the first drive motor is connected to the first lead screw; The first locking plate is disposed on one side of the first dovetail and the first dovetail below. The first locking plate has a plurality of first locking holes, and fasteners pass through the first locking holes and are fixedly connected to the first dovetail and the first dovetail below, respectively.

4. The wind turbine yaw brake disc repair device according to claim 1, characterized in that: The second moving component includes an upper second dovetail, a lower second dovetail, a second lead screw, a second slider, a second drive motor, and a second locking plate; Wherein, the lower part of the second dovetail is fixedly connected to the upper part of the first dovetail of the first moving member, and the lower part of the second dovetail has a built-in accommodating space. The second lead screw passes through the accommodating space and is rotatably connected to the lower part of the second dovetail. The second slider is disposed on the second lead screw. The upper part of the second dovetail is fixedly connected to the second slider and slides with the lower part of the second dovetail. The output end of the second drive motor is connected to the second lead screw. The second locking plate is disposed on one side of the second dovetail and the second dovetail bottom. The second locking plate has a plurality of second locking holes, and fasteners pass through the second locking holes and are fixedly connected to the second dovetail and the second dovetail bottom respectively.

5. A wind turbine yaw brake disc repair device according to claim 1, characterized in that: The milling mechanism includes a bearing support, a milling motor, a connecting spindle, a spindle seat, a milling cutter head, and milling inserts; The bearing support is fixedly connected to the second dovetail of the second moving component. The connecting spindle is correspondingly installed in the bearing support. The milling motor is set at the bottom end of the bearing support through a motor support. The output shaft end of the milling motor is connected to the connecting spindle through a coupling. The spindle seat is fixedly set at the top end of the connecting spindle. The milling cutter head is fixedly connected to the spindle seat. The edge protrusion of the milling cutter disc has several gaps at intervals, and the gaps are provided with mounting positions for mounting the milling cutter blades. The milling cutter blades are mounted in the gaps of the milling cutter disc by fasteners.

6. A wind turbine yaw brake disc repair device according to claim 5, characterized in that: The milling cutter head has multiple mounting holes at its center, and the camera and the ranging laser are respectively installed in the mounting holes.

7. A wind turbine yaw brake disc repair device according to claim 1, characterized in that: In response to severe wear, the repair device is controlled to mill and repair the yaw brake disc, bond the metal insert to the yaw brake disc, and fix the metal insert to the yaw brake disc with fasteners.

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