Coaxial detection equipment for processing cabin cover of wind power generator and detection method of coaxial detection equipment

Abstract

The invention discloses coaxial detection equipment for wind power generator cabin cover processing and a detection method thereof, and relates to the field of cabin cover detection.The coaxial detection equipment comprises a base, a laser transmitter is installed in the middle of the rear side of a mounting base, a glass cover is installed outside the laser transmitter, and sliding rods are connected to the outer side of the mounting base in a penetrating mode at equal angles; and a supporting plate is arranged on the outer side of the sliding rod, an assembly for conducting benchmark correction on an opening of the cabin body is arranged on the installation base, a scanner is installed on the sliding rail, and a cleaning plate is connected to the top of the sliding rail through a movable assembly. According to the coaxial detection equipment for processing the cabin cover of the wind power generator and the detection method thereof, in the using process, the cabin opening axis can be quickly and accurately positioned through the reference calibration assembly to reduce reference errors, and the radian of the supporting plate is adaptively adjusted to enhance the connection stability and the cleaning assembly to guarantee the precision of the laser transmitter; the replacement seat simulates actual installation, and the detection practicability is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cabin cover detection, in particular to a coaxial detection equipment for wind turbine cabin cover processing and a detection method thereof. BACKGROUND

[0002] Wind power generation is a green energy storage method, and a wind turbine is an important component thereof. The wind turbine is a device for converting wind energy into electric energy, which mainly comprises a wind wheel, a generator, a tower and a cabin. The wind turbine cabin cover is a key shell component for protecting the internal core equipment. The machining precision of the wind turbine cabin cover directly affects the sealing performance, structural stability and service life of the unit. Deviation in coaxiality will cause misalignment of the connecting parts of the cabin cover, the hub and the tower, leading to sealing failure, stress concentration and abnormal vibration. Therefore, the coaxiality of the cabin needs to be detected. However, the existing coaxiality detection equipment is complicated to operate.

[0003] To solve the above-mentioned defects, the existing technology (Chinese patent with publication number CN219977355U and publication date of November 7, 2023) discloses a kind of wind turbine cabin cover coaxial detection device, fixed mechanism installs the first gap position of the cabin cover to be detected, adjusts the position of second sliding block to fixed position, adjusts the length of support piece, at least two laser emission units contact the inner wall of cabin cover, can be measured with the angle of support piece, ensure that the included angle between two support pieces and first sliding rail is same, laser emission unit is used to emit laser to cabin cover, laser receiving unit is used to receive the laser emitted by laser emission unit, and converts it into electrical signal, according to the receiving time of electrical signal, to complete the coaxial detection of cabin cover, since the speed of laser is constant, the coaxiality of cabin cover can be calculated by measuring the time difference of laser beam from emission unit to receiving unit, if the time of receiving electrical signal is different, and indicates that the coaxiality of cabin cover is unqualified, the time of receiving electrical signal is same, and indicates that the coaxiality of cabin cover is qualified.

[0004] In the above-mentioned scheme, the fixed mechanism is adsorbed on the cabin, and then the length of the support rod is manually rotated to make it contact with the inner wall of the cabin. The coaxiality of the whole cabin is detected by the laser emitter. In this process, the coaxiality of the fixed part and the cabin cannot be ensured. Manual adjustment has large error, which causes error in the reference position of coaxial detection, so that the accuracy of subsequent detection cannot be ensured. At the same time, the cleaning and protection of laser emitter are very important for detection accuracy. In the processing environment of wind turbine cabin cover, dust, oil stains and other interference are often accompanied, which need active protection and automatic cleaning to ensure stable operation of laser emitter. SUMMARY

[0005] The purpose of the present application is to provide a coaxial detection equipment for wind turbine nacelle processing and its detection method, to solve the coaxial detection equipment for wind turbine nacelle processing in the prior art in the background art, which is adsorbed on the nacelle by the fixing mechanism during use, and then the length of the supporting rod is manually rotated to make it abut against the inner wall of the nacelle, and the coaxiality of the nacelle as a whole is detected by the laser emitter, and in this process, the coaxiality of the fixing part and the nacelle cannot be ensured, and the manual adjustment has a large error, which further causes the error of the reference position of the coaxial detection, so that the accuracy of the subsequent detection result cannot be ensured, and the cleaning and protection of the laser emitter are crucial to the detection accuracy, and in the processing environment of the wind turbine nacelle, dust, oil stains and other interference often occur, so active protection and automatic cleaning are needed to ensure the stable operation of the laser emitter.

[0006] To achieve the above purpose, the present application provides the following technical scheme: a coaxial detection equipment for wind turbine nacelle processing, comprising a base, a first sliding block is slidably connected to the top of the base, a fixing seat is connected to the top of the first sliding block through a second electric push rod, an installation seat is installed on the rear side of the fixing seat, a laser emitter is installed on the rear side of the installation seat, a glass cover is installed outside the laser emitter, a slide rod is connected to the outside of the installation seat at equal angles, a support plate is provided on the outside of the slide rod, and the support plate abuts against the inner wall of the detection part of the nacelle body.

[0007] The installation seat is provided with a component for reference calibration with the opening of the nacelle body, and the reference calibration component accurately and stably connects the detection equipment and the nacelle body.

[0008] The rear side of the installation seat is rotatably connected with a large gear, the large gear is fixed with a slide rail, the slide rail is installed with a scanner, and the top of the slide rail is connected with a cleaning plate for cleaning the glass cover through a movable component.

[0009] Further, the top inside of the base is connected with the side surface of the first sliding block through a first electric push rod, the front side of the fixing seat is provided with a controller, the first electric push rod and the second electric push rod adjust the horizontal and vertical positions of the installation seat, the inside of the nacelle body is provided with a replacement seat for replacing the wind turbine, the installation position of the replacement seat is consistent with the position of the subsequent wind turbine, and the replacement seat is provided with a replacement part corresponding to the rotating shaft of the wind turbine.

[0010] Further, the reference calibration component comprises a slide rail and a scanner, the scanner determines the axis of the opening of the nacelle body after one revolution, and the controller adjusts the first electric push rod and the second electric push rod to move the installation seat to the inside of the opening of the nacelle body for fixation.

[0011] Further, the middle part of the front side of the fixed seat is provided with a first motor, the output end of the first motor is connected with a shaft rod, the shaft rod penetrates through the inside of the mounting seat and is rotationally connected, the end of the shaft rod is connected with a first screw through a bevel gear connecting piece, and the first screw is rotationally connected at equal angles in the inside of the mounting seat.

[0012] Further, the outside of the first screw is threadedly connected with a sliding rod, the sliding rod drives a support plate to form a sliding support structure, and the support plate is provided in an arc-shaped structure.

[0013] Further, the upper and lower sides of the sliding rod are symmetrically provided with sliding grooves, the second screw is rotationally connected in the sliding grooves, torsion springs are rotationally connected between the end of the second screw and the sliding grooves, the outside of the end of the second screw is provided with a pull rope, the outside of the pull rope is fixedly connected with the inside of the mounting seat, and the second screw forms a rotating structure through the pull rope and the torsion springs.

[0014] Further, the second screw is threadedly connected with a second sliding block, the outside of the second sliding block is hingedly connected with a connecting rod, the outside of the connecting rod is hingedly connected with both ends of the support plate, and the support plate drives the support plate to form an arc adjustment structure through the connecting rod.

[0015] Further, the movable assembly comprises a second motor mounted on the inside of the top of the mounting seat, the output end of the second motor is connected with a pinion, the bottom of the pinion is meshingly connected with a gear wheel, the pinion is located on the top of the rear side of the mounting seat, and the pinion drives the scanner to circumferentially scan to measure the shaft center through the gear wheel and the slide rail.

[0016] Further, the top of the slide rail is horizontally and slidably connected with a connecting frame, the bottom of the connecting frame is fixedly provided with a hollow cleaning plate, the front side of the connecting frame is fixedly provided with a vertical rod, the vertical rod is slidably connected in a flower-shaped guide groove formed in the rear side of the mounting seat, a gas storage bag is mounted at the sliding position of the connecting frame and the slide rail, the gas storage bag is in communication with the inside of the cleaning plate through a connecting pipe, and the cleaning plate is provided with air injection holes at equal intervals near the right side of the glass cover, and the connecting frame drives the cleaning plate to reciprocatingly move to clean the glass cover through the guide groove and the slide rail.

[0017] A coaxial detection method for processing a wind turbine nacelle cover, comprising the following steps: S. First, a replacement seat is arranged in the inside of the nacelle body to replace the wind turbine shaft, the device is moved to the position of the nacelle body to be detected, the slide rail and the scanner are then driven to circumferentially rotate through the gear wheel, the scanner scans the opening of the nacelle body to find the shaft center of the opening, and then the first electric push rod and the second electric push rod are controlled by the controller to drive the mounting seat to be positioned in the middle of the opening of the nacelle body to determine the reference position for detection; S. Then, the slide rod and the support plate outside the mounting seat are extended to abut against the inner wall at the opening of the nacelle body, and the second sliding block slides to drive the connecting rod to synchronously adjust the two ends of the support plate, so that the support plate can fully adapt to the inner wall at the opening of the nacelle body and fully contact the inner wall, thereby improving the stability of the installation of the detection equipment. S. Then, the laser emitter emits light to obtain coordinate points, which are displayed on the panel of the controller, and the scanner is rotated again to scan the shaft on the substitute seat to obtain coordinate points. The coordinate points obtained by the scanner are compared with the coordinate points at the light falling points of the laser emitter. If the coordinate points are consistent, the shaft of the nacelle body and the wind turbine are coaxial, otherwise, adjustment is needed.

[0018] Compared with the prior art, the present application has the following advantages: Improve the accuracy of the reference position and reduce the detection error: The reference calibration assembly (scanner, large gear, slide rail, etc.) is used to automatically identify the opening shaft center of the nacelle body: the scanner is scanned circumferentially to determine the opening shaft center, and the controller automatically adjusts the horizontal and vertical positions of the mounting seat through the first and second electric push rods, so that the equipment is accurately aligned with the reference position, solving the problem of reference deviation caused by manual adjustment in the prior art, and providing a reliable foundation for subsequent coaxiality detection.

[0019] Enhance the stability of the connection between the equipment and the nacelle: the equipment is fixed by abutting against the inner wall of the nacelle through the slide rod and the support plate, and the curvature of the support plate can be automatically adjusted through the second sliding block, the connecting rod and the second screw: when the slide rod is extended, the second screw is rotated by the pull rope, the second sliding block is moved, the connecting rod pushes the two ends of the support plate to adjust the curvature, ensuring that the support plate fully matches the inner wall of the nacelle opening with different curvatures, and avoiding the influence of equipment shaking on precision during detection.

[0020] Ensure stable operation of the laser emitter: the laser emitter is externally provided with a glass cover for protection, and automatic cleaning is achieved through the cleaning plate: when the slide rail rotates, the connecting frame slides along the flower-shaped guide groove, driving the cleaning plate to reciprocatingly wipe the glass cover; the air bag is squeezed with the connecting frame, and air is sprayed to the glass cover through the air injection hole to remove dust and oil stains, solving the problem of interference of pollutants in the processing environment with the accuracy of the laser emission.

[0021] Simulate the actual installation scene to improve the detection practicability: the substitute seat arranged in the nacelle is consistent with the installation position of the subsequent wind turbine, and the substitute parts on the substitute seat correspond to the shaft of the generator, so that the detection object directly matches the actual installation state, ensuring that the detection result can truly reflect the coaxiality of the nacelle cover and the generator, and providing accurate reference for subsequent installation. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic view of the overall front structure of the present application; Figure 2 It is a schematic diagram of the cabin cross-sectional structure of the application; Figure 3 It is a schematic diagram of the overall structure of the detection device of the application; Figure 4 It is a schematic diagram of the base and fixing seat structure of the application; Figure 5 It is a schematic diagram of the internal cross-sectional structure of the fixing seat of the application; Figure 6 It is a schematic diagram of the cross-sectional structure of the sliding rod and support plate of the application; Figure 7 It is a schematic diagram of the rear side structure of the mounting seat of the application; Figure 8 It is a schematic diagram of the rear side cross-sectional structure of the mounting seat of the application; Figure 9 It is a schematic diagram of the distribution structure of the pinion gear, gear and sliding rail of the application; Figure 10 It is a schematic diagram of the structure of the sliding rail and cleaning plate of the application.

[0023] In the figure: 1, base; 2, first sliding block; 3, first electric push rod; 4, second electric push rod; 5, fixing seat; 6, mounting seat; 7, sliding rod; 8, support plate; 9, first motor; 10, shaft; 11, first screw; 12, sliding groove; 13, second screw; 14, torsion spring; 15, pull rope; 16, second sliding block; 17, connecting rod; 18, laser emitter; 19, glass cover; 20, second motor; 21, pinion gear; 22, gear; 23, sliding rail; 24, scanner; 25, connecting frame; 26, cleaning plate; 27, vertical rod; 28, guide groove; 29, air storage bag; 30, air injection hole; 31, cabin body; 32, replacement seat. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the application.

[0025] Embodiment one: please refer to Figures 1-4 and Figures 6-8As shown, the present application provides the following technical solutions: a coaxial detection equipment for wind turbine nacelle processing, comprising a base 1, the top of the base 1 is slidably connected with a first sliding block 2, the top of the first sliding block 2 is connected with a fixed seat 5 through a second electric push rod 4, the rear side of the fixed seat 5 is installed with a mounting seat 6, the rear side of the mounting seat 6 is installed with a laser emitter 18, the outside of the laser emitter 18 is installed with a glass cover 19, the inside of the top of the base 1 is connected with the side of the first sliding block 2 through a first electric push rod 3, the front side of the fixed seat 5 is provided with a controller, the first electric push rod 3 and the second electric push rod 4 adjust the horizontal and vertical positions of the mounting seat 6, the outside of the mounting seat 6 is connected with a slide rod 7 at equal angles, the outside of the slide rod 7 is provided with a support plate 8, the support plate 8 abuts against the inner wall of the detection part of the nacelle body 31, the mounting seat 6 is provided with an assembly for reference calibration with the opening of the nacelle body 31, and the reference calibration assembly accurately and stably connects the detection equipment with the nacelle body 31, the rear side of the mounting seat 6 is rotatably connected with a large gear 22, the large gear 22 is fixed with a slide rail 23, the slide rail 23 is installed with a scanner 24, and the top of the slide rail 23 is connected with a cleaning plate 26 for cleaning the glass cover 19 through a movable assembly.

[0026] In use, the replacement seat 32 (simulating the installation position and shaft of the wind turbine) is arranged inside the nacelle body 31, the equipment is moved to the detection position, (as Figure 7 The second motor 20 drives the small gear 21 to rotate, drives the meshing large gear 22 to rotate, and makes the scanner 24 on the slide rail 23 scan along the circumference of the nacelle opening, so as to determine the shaft center of the opening through the scanning data, and the controller controls the first electric push rod 3 (adjusting the horizontal position) and the second electric push rod 4 (adjusting the vertical position) according to the shaft center coordinates, (as Figures 3-4 The mounting seat 6 is accurately moved to the middle of the opening of the nacelle body 31 to complete the reference position calibration, the slide rod 7 drives the support plate 8 to abut against the inner wall of the detection part of the nacelle body 31, so as to fix the device on the nacelle body 31, and when the slide rail 23 is driven to rotate by the large gear 22, the cleaning plate 26 is driven to clean the glass cover 19, so as to avoid the interference of pollutants in the environment on the laser emission precision. Embodiment

[0027] On the basis of embodiment one, a reference position adjusting and stable supporting mechanism is also disclosed, please refer to Figures 1-6As shown, the inner side of the cabin body 31 is provided with a replacement seat 32 instead of the wind turbine, the installation position of the replacement seat 32 is consistent with the subsequent wind turbine position, and the replacement seat 32 is provided with a replacement part corresponding to the rotating shaft of the wind turbine. The reference calibration assembly includes a slide rail 23 and a scanner 24. After the scanner 24 runs a circle, the axis of the opening of the cabin body 31 is determined. The controller adjusts the first electric push rod 3 and the second electric push rod 4 to move the mounting seat 6 to the inside of the opening of the cabin body 31 for fixation. The front middle part of the fixing seat 5 is provided with a first motor 9. The output end of the first motor 9 is connected with a shaft rod 10. The shaft rod 10 penetrates through and is rotationally connected to the inside of the mounting seat 6. The end part of the shaft rod 10 is connected with a first screw rod 11 through a bevel gear connecting piece. The first screw rod 11 is rotationally connected to the inside of the mounting seat 6 at equal angles. The outer side of the first screw rod 11 is threadedly connected with a slide rod 7. The slide rod 7 drives a support plate 8 to form a sliding support structure.

[0028] As shown in Figures 5-6 In use, the first motor 9 is started to drive the shaft rod 10 to rotate. The shaft rod 10 drives the first screw rod 11 to rotate synchronously through the bevel gear connecting piece. The slide rod 7 extends radially along the mounting seat 6 until the support plate 8 contacts with the inner wall of the cabin opening, so that the detection device is stably installed at the opening of the cabin body 31.

[0029] As shown in Figures 3-6 The support plate 8 is provided in an arc shape. The upper and lower sides of the slide rod 7 are symmetrically provided with slide grooves 12. A second screw rod 13 is rotationally connected in the slide grooves 12. A torsion spring 14 is rotationally connected between the end part of the second screw rod 13 and the slide grooves 12. A pull rope 15 is wound around the outer side of the end part of the second screw rod 13. The outer side of the pull rope 15 is fixedly connected with the inside of the mounting seat 6. The second screw rod 13 forms a rotating structure through the pull rope 15 and the torsion spring 14. A second slide block 16 is threadedly connected on the second screw rod 13. A connecting rod 17 is hingedly connected to the outer side of the second slide block 16. The outer side of the connecting rod 17 is hingedly connected with both ends of the support plate 8. The support plate 8 is driven by the connecting rod 17 to form an arc adjustment structure.

[0030] As shown in Figure 6 In use, the pull rope 15 drives the second screw rod 13 to rotate against the elastic force of the torsion spring 14 during the extension of the slide rod 7. The second slide block 16 is driven to move in the slide grooves 12. The slide grooves 12 drive the connecting rod 17 to rotate. The connecting rod 17 drives the both ends of the support plate 8 to bend. The arc is adaptively adjusted to ensure that the support plate 8 is closely fitted with the inner wall of the cabin, so that the equipment is stably connected with the cabin. Embodiment

[0031] On the basis of the second embodiment, a Figures 7-10As shown, please refer to the figure cleaning protection mechanism, its specific structure as follows: the movable assembly includes the second motor 20 installed in the top of the mounting seat 6 inside, the output end of the second motor 20 is connected with the pinion 21, the bottom of the pinion 21 is engaged with the gear 22, the pinion 21 is located at the top of the rear side of the mounting seat 6, the pinion 21 drives the scanner 24 to scan the shaft center through the gear 22 and the slide rail 23, the top of the slide rail 23 is horizontally slidably connected with the connecting frame 25, the bottom of the connecting frame 25 is fixed with the hollow cleaning plate 26, the front side of the connecting frame 25 is fixed with the vertical rod 27, the vertical rod 27 is slidably connected in the flower-shaped guide groove 28 opened in the rear side of the mounting seat 6, the sliding part of the connecting frame 25 and the slide rail 23 is provided with the gas storage bag 29, the gas storage bag 29 is connected with the inside of the cleaning plate 26 through the connecting pipe, the cleaning plate 26 is provided with the air injection hole 30 near the right side of the glass cover 19 at equal intervals, the connecting frame 25 drives the cleaning plate 26 to reciprocate to clean the glass cover 19 through the guide groove 28 and the slide rail 23.

[0032] In use, the second motor 20 is started, driving the pinion 21 to rotate, the pinion 21 drives the gear 22 to rotate after rotating, the gear 22 drives the slide rail 23 to rotate synchronously, the scanner 24 on the slide rail 23 rotates circumferentially, scans the replacement seat 32, the laser emitter 18 emits laser, and forms a landing point coordinate on the replacement part of the replacement seat 32 and transmits to the controller, the scanner 24 rotates circumferentially along the slide rail 23 again, scans the replacement part (simulates the generator shaft) on the replacement seat 32, and obtains the shaft center coordinate, the controller compares the laser landing point coordinate with the replacement part shaft center coordinate: if the coordinates are consistent, it indicates that the cabin body 31 and the generator shaft are in coaxial state; if they are not consistent, it is determined that there is coaxiality deviation, which needs to be adjusted, in this process, the vertical rod 27 on the connecting frame 25 slides along the flower-shaped guide groove 28 on the rear side of the mounting seat 6 when the slide rail 23 rotates with the gear 22, driving the cleaning plate 26 to reciprocate along the surface of the glass cover 19 to wipe the surface stains, the connecting frame 25 extrudes the gas storage bag 29 in the sliding process, the gas in the gas storage bag 29 is transported to the inside of the cleaning plate 26 through the connecting pipe, and then is sprayed out from the air injection hole 30, to assist in removing the fine dust on the glass cover 19, ensuring that the emission accuracy of the laser emitter 18 is not affected by the shielding.

[0033] A kind of wind driven generator cabin cover processing is coaxial detection method, comprising the following steps: S1, first, the replacement seat 32 of the replacement wind turbine shaft is arranged inside the cabin body 31, the device is moved to the position where the cabin body 31 to be detected is located, then the slide rail 23 and the scanner 24 are driven to rotate circumferentially by the large gear 22, the scanner 24 scans the opening of the cabin body 31, so that the axis of the opening is found, then the first electric push rod 3 and the second electric push rod 4 are controlled by the controller, so that the fixed seat 5 drives the mounting seat 6 to adjust the position and is placed in the middle of the opening of the cabin body 31, the reference position for detection is determined; S2, then, the slide rod 7 and the support plate 8 outside the mounting seat 6 are extended and abut against the inner wall of the opening of the cabin body 31, at the same time, the second slide block 16 is slid to drive the connecting rod 17 to synchronously adjust the two ends of the support plate 8, so that the support plate 8 can fully adapt to the inner wall of the opening of the cabin body 31 and fully contact with the inner wall, so as to improve the stability of the installation of the detection equipment; S3, then the laser emitter 18 emits light, obtains coordinate points, and displays on the panel of the controller, then the scanner 24 is circumferentially rotated to scan the shaft on the replacement seat 32, obtains coordinate points, compares the axis coordinates obtained after the scanner 24 is scanned, compares the coordinates with the coordinates of the light falling point of the laser emitter 18, if the coordinates are consistent, the cabin body 31 and the shaft of the wind turbine are in the coaxial state, otherwise, adjustment is needed.

[0034] The contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0035] Although the present application is described in detail with reference to the foregoing embodiments, the skilled in the art can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A coaxial detection equipment for wind turbine nacelle processing, comprising a base (1), a first sliding block (2) is slidably connected to the top of the base (1), a fixed seat (5) is connected to the top of the first sliding block (2) through a second electric push rod (4), an installation seat (6) is installed on the rear side of the fixed seat (5), a laser emitter (18) is installed on the rear middle of the installation seat (6), a glass cover (19) is installed on the outside of the laser emitter (18), a slide rod (7) is connected to the outside of the installation seat (6) at equal angles, a support plate (8) is provided on the outside of the slide rod (7), and the support plate (8) abuts against the inner wall of the detection part of the nacelle body (31); characterized in that A reference calibration assembly is provided on the installation seat (6) to calibrate the opening of the nacelle body (31), and the reference calibration assembly accurately and stably connects the detection equipment and the nacelle body (31); A large gear (22) is rotatably connected to the rear side of the installation seat (6), a slide rail (23) is fixed to the large gear (22), a scanner (24) is installed on the slide rail (23), and a cleaning plate (26) for cleaning the glass cover (19) is connected to the top of the slide rail (23) through a movable assembly.

2. A coaxial detection device for wind turbine nacelle machining according to claim 1, characterized in that: The inside of the top of the base (1) is connected to the side of the first sliding block (2) through a first electric push rod (3), a controller is provided on the front side of the fixed seat (5), the first electric push rod (3) and the second electric push rod (4) adjust the horizontal and vertical positions of the installation seat (6), a replacement seat (32) is provided on the inside of the nacelle body (31) to replace the wind turbine, the installation position of the replacement seat (32) is consistent with the position of the subsequent wind turbine, and a replacement part corresponding to the rotating shaft of the wind turbine is provided on the replacement seat (32).

3. A coaxial detection device for wind turbine nacelle machining according to claim 2, characterized in that: The reference calibration assembly comprises a slide rail (23) and a scanner (24), the scanner (24) determines the axis of the opening of the nacelle body (31) after one revolution, and the controller adjusts the first electric push rod (3) and the second electric push rod (4) to move the installation seat (6) to the inside of the opening of the nacelle body (31) for fixation.

4. A coaxial detection device for wind turbine nacelle machining according to claim 3, characterized in that: A first motor (9) is installed on the middle of the front side of the fixed seat (5), a shaft rod (10) is connected to the output end of the first motor (9), the shaft rod (10) penetrates and is rotatably connected to the inside of the installation seat (6), the end of the shaft rod (10) is connected to a first screw rod (11) through a bevel gear connecting piece, and the first screw rod (11) is rotatably connected to the inside of the installation seat (6) at equal angles.

5. A coaxial detection device for wind turbine nacelle machining according to claim 4, characterized in that: The outside of the first screw rod (11) is threadedly connected with the slide rod (7), the slide rod (7) drives the support plate (8) to form a sliding support structure, and the support plate (8) is provided in an arc shape.

6. A coaxial detection device for wind turbine nacelle machining according to claim 5, characterized in that: The upper and lower sides of the slide rod (7) are symmetrically provided with a sliding groove (12), a second screw rod (13) is rotatably connected in the sliding groove (12), a torsional spring (14) is rotatably connected between the end of the second screw rod (13) and the sliding groove (12), a pull rope (15) is arranged outside the end of the second screw rod (13), the outside of the pull rope (15) is fixedly connected with the inside of the mounting base (6), and the second screw rod (13) forms a rotating structure through the pull rope (15) and the torsional spring (14).

7. A coaxial detection device for wind turbine nacelle machining according to claim 6, characterized in that: A second sliding block (16) is threadedly connected to the second screw rod (13), a connecting rod (17) is hingedly connected to the outside of the second sliding block (16), and the outside of the connecting rod (17) is hingedly connected with both ends of the supporting plate (8); the supporting plate (8) drives the supporting plate (8) through the connecting rod (17) to form an arc adjustment structure.

8. A coaxial detection device for wind turbine nacelle machining according to claim 7, characterized in that: The movable assembly comprises a second motor (20) mounted on the inside of the top of the mounting base (6), the output end of the second motor (20) is connected with a pinion (21), the bottom of the pinion (21) is meshingly connected with a large gear (22), the pinion (21) is located on the top of the rear side of the mounting base (6), and the pinion (21) drives the scanner (24) to circumferentially scan and measure the shaft center through the large gear (22) and the slide rail (23).

9. A coaxial detection device for wind turbine nacelle machining according to claim 8, characterized in that: The top of the slide rail (23) is horizontally and slidably connected with a connecting frame (25), the bottom of the connecting frame (25) is fixedly provided with a hollow cleaning plate (26), the front side of the connecting frame (25) is fixedly provided with a vertical rod (27), the vertical rod (27) is slidably connected in a flower-shaped guide groove (28) formed in the rear side of the mounting base (6), a gas storage bag (29) is mounted at the sliding position of the connecting frame (25) and the slide rail (23), the gas storage bag (29) is in communication with the inside of the cleaning plate (26) through a connecting pipe, the cleaning plate (26) is provided with air injection holes (30) at equal intervals near the right side of the glass cover (19), and the connecting frame (25) drives the cleaning plate (26) to reciprocatingly move to clean the glass cover (19) through the guide groove (28) and the slide rail (23).

10. A coaxial detection device for processing a nacelle of a wind power generator according to claim 9, characterized in that A coaxial detection method of the coaxial detection device is also disclosed, which specifically comprises the following steps: S1, first, an alternative seat (32) is arranged in the inside of the cabin body (31) to replace the wind turbine shaft, the device is moved to the position where the cabin body (31) to be detected is located, then the slide rail (23) and the scanner (24) are driven to rotate circumferentially through the large gear (22), the scanner (24) scans the opening of the cabin body (31) to find the shaft center of the opening, and then the first electric push rod (3) and the second electric push rod (4) are controlled through the controller, so that the mounting base (6) is driven by the fixing seat (5) to adjust the position and is arranged at the middle of the opening of the cabin body (31), and the reference position for detection is determined. S2, then, the slide rod (7) and the support plate (8) outside the mounting seat (6) stretch out and touch the inner wall of the opening of the nacelle body (31), while the second slider (16) slides and drives the connecting rod (17) to adjust the two ends of the support plate (8) synchronously, so that the support plate (8) can fully adapt to the inner wall of the opening of the nacelle body (31) and fully contact, thereby improving the stability of the installation of the detection equipment; S3, then the laser emitter (18) emits light, obtains coordinate points, and displays on the panel of the controller, and the scanner (24) rotates circumferentially again to scan the shaft on the replacement seat (32), obtains coordinate points, compares the shaft center coordinates obtained after the scanner (24) scans, compares the coordinates with the coordinates of the light falling point of the laser emitter (18), if the coordinates are consistent, the nacelle body (31) and the rotating shaft of the wind turbine are in coaxial state, otherwise adjustment is needed.

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