Fault diagnosis device for wind driven generator

Abstract

The invention discloses a fault diagnosis device for a wind driven generator, and provides the following scheme that the fault diagnosis device comprises a first tightening hoop, the first tightening hoop is rotatably connected with a second tightening hoop, the first tightening hoop and the second tightening hoop are jointly provided with a fixing mechanism, and the first tightening hoop and the second tightening hoop are jointly provided with a detection mechanism; a diagnosis mechanism is arranged on the detection mechanism; by arranging the detection mechanism and the diagnosis mechanism, during use, a handle is manually held and rotated, the handle drives a placement frame, then a rotating frame rotates in a sliding groove, a moving block on the rotating frame is driven to rotate along with rotation of the placement frame, and then a probe body is driven to rotate; the ultrasonic flaw detector main body also rotates along with the placement frame until the probe main body is adjusted to an area to be detected, so that any area on the transverse surface of the main shaft can be conveniently detected through the probe main body, the ultrasonic flaw detector main body and the connecting wire, and the operation is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of wind turbine detection, and particularly to a fault diagnosis device for a wind turbine. Background Art

[0002] A wind turbine is a power device that converts wind energy into mechanical work, the mechanical work drives the rotor to rotate, and finally outputs alternating current. A wind turbine generally consists of components such as a wind wheel, a main shaft, a generator, a yaw device, a tower, a speed limit safety mechanism, and an energy storage device. The main shaft of a wind turbine, as a component that bears the blades, is an important factor to ensure the normal and stable operation of the unit. In the existing patent with the patent number CN221280980U, an auxiliary device for ultrasonic flaw detection of the main shaft of a wind turbine was disclosed.

[0003] However, in actual operation, although the auxiliary device for ultrasonic flaw detection of the main shaft of the wind turbine in the above patent can detect the main shaft of the generator at different positions and heights, in a complex external environment, the damaged part may occur anywhere on the main shaft, and the surface of the main shaft is arc-shaped. In this way, during the actual detection process, it is still difficult to detect any area on the surface of the main shaft with a single use, making the operation more cumbersome; in addition, during the long-term use of the detection probe, it is extremely easy to wear. In actual use, when the wear amount of the wedge block of the detection probe > 0.2 mm, it needs to be replaced in time. Therefore, during the operation process, the protection work for the detection probe is also an important issue. In view of the above problems, the present invention document proposes a fault diagnosis device for a wind turbine. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a fault diagnosis device for a wind turbine that can conveniently perform flaw detection on any part of the main shaft during use and can conveniently protect the measurement probe in a non-use state.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A fault diagnosis device for a wind turbine, including a first tightening hoop, a second tightening hoop is rotatably connected to the first tightening hoop, and a fixing mechanism is jointly provided on the first tightening hoop and the second tightening hoop. A detection mechanism is jointly provided on the first tightening hoop and the second tightening hoop. A diagnosis mechanism is provided on the detection mechanism. An adjustment mechanism is provided inside the detection mechanism, and a protection mechanism is provided on the detection mechanism. Ball bearings are provided inside the first tightening hoop and the second tightening hoop;

[0007] The detection mechanism includes a sliding groove. One sliding groove is provided at each of the two ends of the first tightening band and the second tightening band. An installation frame is provided on one side of the first tightening band and the second tightening band. Two rotating frames are fixedly connected to the installation frame. The two rotating frames are rotatably connected to the first tightening band and the second tightening band through the sliding grooves. A moving block is slidably connected to the installation frame, and a probe body is fixedly connected to the moving block.

[0008] The diagnosis mechanism includes an ultrasonic flaw detector body, and the ultrasonic flaw detector body is provided on the installation frame.

[0009] The adjustment mechanism includes a motor. A motor is provided inside the installation frame. A lead screw is connected to the transmission end of the motor. The lead screw is rotatably connected inside the installation frame and is threadedly connected to the inside of the moving block.

[0010] Preferably, the overall shape of the rotating frame is J-shaped, the end of the rotating frame is arc-shaped, and the two rotating frames are arranged oppositely.

[0011] Preferably, a handle is fixedly connected to the installation frame, and a sheath is provided on the handle.

[0012] Preferably, two mounting blocks are fixedly connected to the installation frame, and the ultrasonic flaw detector body is jointly mounted on the two mounting blocks. A connecting wire is provided on the ultrasonic flaw detector body, and the connecting wire is connected to the probe body.

[0013] Preferably, multiple groups of balls are provided inside the first tightening band and the second tightening band. Each group of balls has multiple balls, and the multiple balls in each group are distributed in an annular array.

[0014] Preferably, the fixing mechanism includes docking blocks. Two docking blocks are respectively fixedly connected to the first tightening band and the second tightening band, and the docking blocks on the first tightening band and the second tightening band are in mutual contact with each other in pairs.

[0015] Preferably, the two mutually contacting docking blocks are fixedly connected by bolts, and a nut is threadedly connected to the bolts.

[0016] Preferably, the protection mechanism includes a protection frame. A protection frame is fixedly connected to the installation frame. A connecting shaft is rotatably connected inside the protection frame. A storage roller is fixedly connected to the connecting shaft. A covering cloth is wound around the storage roller. A plug block is slidably connected to the protection frame. One end of the covering cloth is fixedly connected to the connecting shaft, and the other end is fixedly connected to the plug block.

[0017] Preferably, a push block is fixedly connected to the plug block, and a card slot is provided at the bottom of the inner cavity of the protection frame, and a damping pad is provided in the card slot.

[0018] Preferably, a spring is provided at each end of the coupling shaft. One end of the spring is fixedly connected to the coupling shaft, and the other end is fixedly connected to the inside of the protective frame.

[0019] Compared with the prior art, the present invention provides a fault diagnosis device for a wind turbine, which has the following beneficial effects:

[0020] 1. For the fault diagnosis device for a wind turbine, by setting the chute, rotating frame, placement frame, handle, sheath, moving block, probe body, ultrasonic flaw detector body and connecting wire, during use, the sheath on the handle can be manually held and rotated, then the handle drives the placement frame, and further drives the two rotating frames to rotate inside the chute. As the placement frame rotates, the moving block on it will also rotate, and the rotation of the moving block will drive the probe body to rotate together, while the ultrasonic flaw detector body also rotates with the placement frame at the same time until the probe body is adjusted to the area to be detected. Thus, through the probe body, in cooperation with the ultrasonic flaw detector body and the connecting wire, it is convenient to detect any area on the transverse plane of the main shaft, making the operation more convenient.

[0021] 2. For the fault diagnosis device for a wind turbine, by setting the motor and the lead screw, as needed, the motor can be powered on, and the rotation of the motor drives the rotation of the lead screw. As the lead screw rotates, it drives the moving block to move back and forth inside the placement frame, and further drives the probe body on the moving block to move, thus facilitating the detection of any area on the longitudinal plane of the main shaft, further making the operation more convenient.

[0022] 3. For the fault diagnosis device for a wind turbine, by setting the protective frame, insertion block, push block, card slot, coupling shaft, storage roller, covering cloth, spring and damping pad, after the detection is completed, the motor is used to drive the moving block and the probe body to move together until the probe body moves into the protective frame. Then, the push block is pushed, and the push block drives the insertion block to move together. As the insertion block moves, the covering cloth will gradually unfold and slowly cover the probe body. At this time, the storage roller and the coupling shaft rotate accordingly, and the spring contracts simultaneously until the insertion block is inserted into the damping pad in the card slot, and at this time, the covering cloth will completely cover the probe body, thus facilitating the protection and shielding of the probe body in the non-use state and reducing the wear of the probe body. Description of the Drawings

[0023] Figure 1 is a three-dimensional view of a fault diagnosis device for a wind turbine proposed by the present invention;

[0024] Figure 2 is a view of the connection structure of the first tightening hoop, the second tightening hoop, the fixing mechanism, the detection mechanism and the adjustment mechanism of the present invention;

[0025] Figure 3 Views of the first tightening hoop, second tightening hoop, fixing mechanism and ball connection structure of the present invention;

[0026] Figure 4 Views of the detection mechanism, diagnosis mechanism and protective frame connection structure of the present invention;

[0027] Figure 5 Views of the detection mechanism, diagnosis mechanism and lead screw connection structure of the present invention;

[0028] Figure 6 Views of the rotating frame, mounting block, motor and protective mechanism connection structure of the present invention;

[0029] Figure 7 Views of the protective mechanism structure of the present invention;

[0030] Figure 8 Views of the protective frame, insertion block, connecting shaft, storage roller, covering cloth and spring connection structure of the present invention.

[0031] In the figure: 1. First tightening hoop; 2. Second tightening hoop; 3. Fixing mechanism; 301. Docking block; 302. Bolt; 303. Nut; 4. Detection mechanism; 401. Slide groove; 402. Rotating frame; 403. Placement frame; 404. Handle; 405. Sheath; 406. Moving block; 407. Probe body; 5. Diagnosis mechanism; 501. Mounting block; 502. Ultrasonic flaw detector body; 503. Connecting wire; 6. Adjusting mechanism; 601. Motor; 602. Lead screw; 7. Protective mechanism; 701. Protective frame; 702. Insertion block; 703. Pushing block; 704. Card slot; 705. Connecting shaft; 706. Storage roller; 707. Covering cloth; 708. Spring; 709. Damping pad; 8. Ball. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0034] Embodiment 1:

[0035] Refer to Figures 1 - 6, a fault diagnosis device for a wind turbine, comprising a first tightening hoop 1, a second tightening hoop 2 is rotatably connected to the first tightening hoop 1, and a fixing mechanism 3 is jointly provided on the first tightening hoop 1 and the second tightening hoop 2. A detection mechanism 4 is jointly provided on the first tightening hoop 1 and the second tightening hoop 2. A diagnosis mechanism 5 is provided on the detection mechanism 4. An adjustment mechanism 6 is provided inside the detection mechanism 4, and a protection mechanism 7 is provided on the detection mechanism 4. Ball bearings 8 are provided inside the first tightening hoop 1 and the second tightening hoop 2.

[0036] The detection mechanism 4 includes a chute 401. A chute 401 is provided at each end of the first tightening hoop 1 and the second tightening hoop 2. An installation frame 403 is provided on one side of the first tightening hoop 1 and the second tightening hoop 2. Two rotating frames 402 are fixedly connected to the installation frame 403. The two rotating frames 402 are rotatably connected to the first tightening hoop 1 and the second tightening hoop 2 through the chute 401. A moving block 406 is slidably connected to the installation frame 403. A probe body 407 is fixedly connected to the moving block 406. The overall shape of the rotating frame 402 is J-shaped, the end of the rotating frame 402 is arc-shaped, and the two rotating frames 402 are arranged oppositely. A handle 404 is fixedly connected to the installation frame 403, and a sheath 405 is provided on the handle 404.

[0037] The diagnosis mechanism 5 includes an ultrasonic flaw detector main body 502. The ultrasonic flaw detector main body 502 is provided on the installation frame 403. Two mounting blocks 501 are fixedly connected to the installation frame 403. The ultrasonic flaw detector main body 502 is jointly mounted on the two mounting blocks 501. A connecting wire 503 is provided on the ultrasonic flaw detector main body 502. The connecting wire 503 is connected to the probe body 407. By providing the installation frame 403, during use, the operator can manually hold the sheath 405 on the handle 404 and rotate it. Then the handle 404 drives the installation frame 403, and further rotates through the two rotating frames 402 inside the chute 401. As the installation frame 403 rotates, it will drive the moving block 406 thereon to rotate together. The rotation of the moving block 406 will drive the probe body 407 to rotate together, and the ultrasonic flaw detector main body 502 also rotates with the installation frame 403 at the same time until the probe body 407 is adjusted to the area to be detected. Thus, through the probe body 407, in cooperation with the ultrasonic flaw detector main body 502 and the connecting wire 503, it is convenient to detect any area on the transverse plane of the main shaft, making the operation more convenient.

[0038] The adjusting mechanism 6 includes a motor 601. The motor 601 is disposed inside the placement frame 403. A lead screw 602 is connected to the driving end of the motor 601. The lead screw 602 is rotatably connected inside the placement frame 403 and is threadedly connected to the inside of the moving block 406. By providing the motor 601, during the detection process, further, as needed, the motor 601 can be powered on. Then the motor 601 rotates to drive the lead screw 602 to rotate. As the lead screw 602 rotates, it will drive the moving block 406 to move back and forth inside the placement frame 403, thereby driving the probe body 407 on the moving block 406 to move together, so as to facilitate the detection of any area on the longitudinal plane of the main shaft, further making the operation more convenient.

[0039] By providing the chute 401, the rotating frame 402, the placement frame 403, the handle 404, the sheath 405, the moving block 406, the probe body 407, the ultrasonic flaw detector main body 502, the connecting wire 503, the motor 601 and the lead screw 602, during use, the operator can manually hold the sheath 405 on the handle 404 and rotate it. Then the handle 404 drives the placement frame 403, and further rotates through the two rotating frames 402 inside the chute 401. As the placement frame 403 rotates, it will drive the moving block 406 thereon to rotate together. The rotation of the moving block 406 will drive the probe body 407 to rotate together, and the ultrasonic flaw detector main body 502 also rotates with the placement frame 403 at the same time until the probe body 407 is adjusted to the area to be detected. Thus, through the probe body 407, in cooperation with the ultrasonic flaw detector main body 502 and the connecting wire 503, it is convenient to detect any area on the transverse plane of the main shaft, making the operation more convenient.

[0040] Further, as needed, the motor 601 can be powered on. Then the motor 601 rotates to drive the lead screw 602 to rotate. As the lead screw 602 rotates, it will drive the moving block 406 to move back and forth inside the placement frame 403, thereby driving the probe body 407 on the moving block 406 to move together, so as to facilitate the detection of any area on the longitudinal plane of the main shaft, further making the operation more convenient.

[0041] In the present invention, multiple groups of balls 8 are provided inside the first tightening hoop 1 and the second tightening hoop 2. Each group of balls 8 has a plurality of balls, and the plurality of balls 8 in each group are distributed in an annular array. During use, by providing multiple groups of multiple balls 8, after the first tightening hoop 1 and the second tightening hoop 2 are installed on the main shaft, it is convenient to make the first tightening hoop 1 and the second tightening hoop 2 slide more easily on the main shaft when needed.

[0042] In the present invention, the fixing mechanism 3 includes docking blocks 301. Two docking blocks 301 are respectively fixedly connected to the first tightening hoop 1 and the second tightening hoop 2, and the docking blocks 301 on the first tightening hoop 1 and the second tightening hoop 2 are in contact with each other pairwise. The two mutually contacting docking blocks 301 are fixedly connected by bolts 302, and nuts 303 are threadedly connected to the bolts 302. Before use, the first tightening hoop 1 and the second tightening hoop 2 can be opened first, then the first tightening hoop 1 and the second tightening hoop 2 are clamped at appropriate positions on the main shaft, and then the corresponding bolts 302 are passed through the two mutually contacting docking blocks 301, and then the nuts 303 are used to limit and fix the bolts 302, thereby installing and fixing the first tightening hoop 1 and the second tightening hoop 2.

[0043] Embodiment 2:

[0044] Referring to Figures 1 - 8 , a fault diagnosis device for a wind turbine, includes a first tightening hoop 1, a second tightening hoop 2 is rotatably connected to the first tightening hoop 1, and a fixing mechanism 3 is jointly provided on the first tightening hoop 1 and the second tightening hoop 2. A detection mechanism 4 is jointly provided on the first tightening hoop 1 and the second tightening hoop 2. A diagnosis mechanism 5 is provided on the detection mechanism 4. An adjustment mechanism 6 is provided inside the detection mechanism 4, and a protection mechanism 7 is provided on the detection mechanism 4. Ball bearings 8 are provided inside the first tightening hoop 1 and the second tightening hoop 2.

[0045] The detection mechanism 4 includes sliding grooves 401. One sliding groove 401 is provided at each end of the first tightening hoop 1 and the second tightening hoop 2. An installation frame 403 is provided on one side of the first tightening hoop 1 and the second tightening hoop 2. Two rotating frames 402 are fixedly connected to the installation frame 403. The two rotating frames 402 are rotatably connected to the first tightening hoop 1 and the second tightening hoop 2 through the sliding grooves 401. A moving block 406 is slidably connected to the installation frame 403. A probe body 407 is fixedly connected to the moving block 406. The overall shape of the rotating frame 402 is J-shaped, the end of the rotating frame 402 is arc-shaped, and the two rotating frames 402 are arranged oppositely. A handle 404 is fixedly connected to the installation frame 403, and a sheath 405 is provided on the handle 404.

[0046] The diagnostic mechanism 5 includes an ultrasonic flaw detector main body 502. The ultrasonic flaw detector main body 502 is provided on the placement frame 403. Two mounting blocks 501 are fixedly connected to the placement frame 403, and the ultrasonic flaw detector main body 502 is jointly mounted on the two mounting blocks 501. A connecting wire 503 is provided on the ultrasonic flaw detector main body 502, and the connecting wire 503 is connected to the probe main body 407. By providing the placement frame 403, during use, the operator can manually hold the sheath 405 on the handle 404 and rotate it, then the handle 404 drives the placement frame 403, and further rotates through the two rotating frames 402 inside the sliding groove 401. As the placement frame 403 rotates, it will drive the moving block 406 thereon to rotate together. The rotation of the moving block 406 will drive the probe main body 407 to rotate together, and the ultrasonic flaw detector main body 502 also rotates with the placement frame 403 at the same time until the probe main body 407 is adjusted to the area to be detected. Thus, through the probe main body 407, in cooperation with the ultrasonic flaw detector main body 502 and the connecting wire 503, it is convenient to detect any area on the transverse plane of the main shaft, making the operation more convenient.

[0047] The adjustment mechanism 6 includes a motor 601. The motor 601 is provided inside the placement frame 403. A lead screw 602 is connected to the transmission end of the motor 601. The lead screw 602 is rotatably connected inside the placement frame 403 and is threadedly connected to the inside of the moving block 406. By providing the motor 601, during the detection process, further, as needed, the motor 601 can be powered on, then the motor 601 rotates to drive the lead screw 602 to rotate. As the lead screw 602 rotates, it will drive the moving block 406 to move back and forth inside the placement frame 403, and further drive the probe main body 407 on the moving block 406 to move together, so as to facilitate the detection of any area on the longitudinal plane of the main shaft, further making the operation more convenient.

[0048] By providing the sliding groove 401, the rotating frame 402, the placement frame 403, the handle 404, the sheath 405, the moving block 406, the probe main body 407, the ultrasonic flaw detector main body 502, the connecting wire 503, the motor 601 and the lead screw 602, during use, the operator can manually hold the sheath 405 on the handle 404 and rotate it, then the handle 404 drives the placement frame 403, and further rotates through the two rotating frames 402 inside the sliding groove 401. As the placement frame 403 rotates, it will drive the moving block 406 thereon to rotate together. The rotation of the moving block 406 will drive the probe main body 407 to rotate together, and the ultrasonic flaw detector main body 502 also rotates with the placement frame 403 at the same time until the probe main body 407 is adjusted to the area to be detected. Thus, through the probe main body 407, in cooperation with the ultrasonic flaw detector main body 502 and the connecting wire 503, it is convenient to detect any area on the transverse plane of the main shaft, making the operation more convenient.

[0049] Further, as required, the motor 601 can be powered on, and the motor 601 rotates to drive the lead screw 602 to rotate. As the lead screw 602 rotates, the moving block 406 is driven to move back and forth inside the placement frame 403, thereby driving the probe body 407 on the moving block 406 to move together, so as to facilitate the detection of any area on the longitudinal plane of the main shaft, and further make the operation more convenient.

[0050] In the present invention, multiple sets of balls 8 are provided in the first tightening hoop 1 and the second tightening hoop 2. Each set of balls 8 has a plurality of balls, and the plurality of balls 8 in each set are distributed in an annular array. When in use, by providing multiple sets of multiple balls 8, after the first tightening hoop 1 and the second tightening hoop 2 are installed on the main shaft, it is convenient to make the first tightening hoop 1 and the second tightening hoop 2 slide more easily on the main shaft when needed.

[0051] In the present invention, the fixing mechanism 3 includes a docking block 301. Two docking blocks 301 are respectively fixedly connected to the first tightening hoop 1 and the second tightening hoop 2, and the docking blocks 301 on the first tightening hoop 1 and the second tightening hoop 2 are in mutual contact with each other. The two mutually contacting docking blocks 301 are fixedly connected by a bolt 302, and a nut 303 is threadedly connected to the bolt 302. Before use, the first tightening hoop 1 and the second tightening hoop 2 can be opened first, then the first tightening hoop 1 and the second tightening hoop 2 are clamped at appropriate positions on the main shaft, and then the corresponding bolt 302 is passed through the two mutually contacting docking blocks 301, and then the bolt 302 is limited and fixed by the nut 303, so as to install and fix the first tightening hoop 1 and the second tightening hoop 2.

[0052] In the present invention, the protection mechanism 7 includes a protection frame 701. The protection frame 701 is fixedly connected to the placement frame 403. A connecting shaft 705 is rotatably connected inside the protection frame 701. A storage roller 706 is fixedly connected to the connecting shaft 705. A shielding cloth 707 is wound around the storage roller 706. A plug 702 is slidably connected to the protection frame 701. One end of the shielding cloth 707 is fixedly connected to the connecting shaft 705, and the other end is fixedly connected to the plug 702. A push block 703 is fixedly connected to the plug 702. And a card slot 704 is provided at the bottom of the inner cavity of the protection frame 701. A damping pad 709 is provided in the card slot 704. One winding spring 708 is provided at each of the two ends of the connecting shaft 705. One end of the winding spring 708 is fixedly connected to the connecting shaft 705, and the other end is fixedly connected to the inside of the protection frame 701. By providing the protection frame 701, the plug 702, the push block 703, the card slot 704, the connecting shaft 705, the storage roller 706, the shielding cloth 707, the winding spring 708 and the damping pad 709, after the detection is completed, the moving block 406 and the probe body 407 can be driven by the motor 601 to move together until the probe body 407 moves into the protection frame 701. The connecting wire 503 on the probe body 407 is simultaneously clamped inside the top end of the protection frame 701. Then, the push block 703 is pushed, and the push block 703 drives the plug 702 to move together. As the plug 702 moves, the shielding cloth 707 will gradually unfold and slowly shield the probe body 407. At this time, the storage roller 706 and the connecting shaft 705 rotate accordingly, and the winding spring 708 contracts simultaneously until the plug 702 is inserted into the damping pad 709 in the card slot 704, and at this time the shielding cloth 707 will completely shield the probe body 407, so as to conveniently protect and shield the probe body 407 in the non-use state and reduce the wear of the probe body 407.

[0053] Working principle: According to the actual situation, before use, the first tightening hoop 1 and the second tightening hoop 2 can be opened first, and then the first tightening hoop 1 and the second tightening hoop 2 are clamped at appropriate positions on the main shaft. Then, the corresponding bolts 302 are passed through the two abutting docking blocks 301, and then the bolts 302 are limited and fixed by the nuts 303, so as to install and fix the first tightening hoop 1 and the second tightening hoop 2.

[0054] During use, the operator can manually hold the sheath 405 on the handle 404 and rotate it. Then, the handle 404 drives the placement frame 403, and further rotates through the two rotating frames 402 inside the sliding groove 401. As the placement frame 403 rotates, it will drive the moving block 406 thereon to rotate together. The rotation of the moving block 406 will drive the probe body 407 to rotate together, and the ultrasonic flaw detector main body 502 also rotates with the placement frame 403 at the same time until the probe body 407 is adjusted to the area to be detected. Thus, through the probe body 407, in cooperation with the ultrasonic flaw detector main body 502 and the connecting wire 503, it is convenient to detect any area on the transverse plane of the main shaft, making the operation more convenient.

[0055] Furthermore, as needed, the motor 601 can be powered on. Then, the rotation of the motor 601 drives the lead screw 602 to rotate. As the lead screw 602 rotates, it will drive the moving block 406 to move back and forth inside the placement frame 403, and further drive the probe body 407 on the moving block 406 to move together, so as to facilitate the detection of any area on the longitudinal plane of the main shaft, further making the operation more convenient.

[0056] And through the arranged multiple groups of balls 8, when the first tightening hoop 1 and the second tightening hoop 2 are installed on the main shaft, it is convenient to make the first tightening hoop 1 and the second tightening hoop 2 slide on the main shaft more easily when needed.

[0057] In addition, after the detection is completed, the motor 601 can be used to drive the moving block 406 and the probe body 407 to move together until the probe body 407 moves into the protective frame 701. The connecting wire 503 on the probe body 407 is simultaneously clamped inside the top of the protective frame 701. Then, the push block 703 is pushed, and the push block 703 drives the insertion block 702 to move together. As the insertion block 702 moves, the covering cloth 707 will gradually unfold and slowly cover the probe body 407. At this time, the storage roller 706 and the connecting shaft 705 rotate together, and the clockwork spring 708 contracts at the same time until the insertion block 702 is inserted into the damping pad 709 in the card slot 704, and the covering cloth 707 will completely cover the probe body 407 at this time, so as to facilitate the protection and shielding of the probe body 407 in the non-use state and reduce the wear of the probe body 407.

[0058] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A fault diagnosis device for a wind turbine, comprising a first fastening hoop (1), characterized in that, A second tightening hoop (2) is rotatably connected to the first tightening hoop (1), and a fixing mechanism (3) is jointly provided on the first tightening hoop (1) and the second tightening hoop (2). A detection mechanism (4) is jointly provided on the first tightening hoop (1) and the second tightening hoop (2). A diagnosis mechanism (5) is provided on the detection mechanism (4). An adjustment mechanism (6) is provided inside the detection mechanism (4), and a protection mechanism (7) is provided on the detection mechanism (4). Ball bearings (8) are provided inside the first tightening hoop (1) and the second tightening hoop (2); The detection mechanism (4) includes sliding grooves (401). One sliding groove (401) is provided at each end of the first tightening hoop (1) and the second tightening hoop (2). A placement frame (403) is provided on one side of the first tightening hoop (1) and the second tightening hoop (2). Two rotating frames (402) are fixedly connected to the placement frame (403). The two rotating frames (402) are rotatably connected to the first tightening hoop (1) and the second tightening hoop (2) through the sliding grooves (401). A moving block (406) is slidably connected to the placement frame (403). A probe body (407) is fixedly connected to the moving block (406); The diagnosis mechanism (5) includes an ultrasonic flaw detector main body (502). The ultrasonic flaw detector main body (502) is provided on the placement frame (403); The adjustment mechanism (6) includes a motor (601). The motor (601) is provided inside the placement frame (403). A lead screw (602) is connected to the transmission end of the motor (601). The lead screw (602) is rotatably connected inside the placement frame (403), and the lead screw (602) is threadedly connected to the inside of the moving block (406).

2. The fault diagnosis device for a wind turbine according to claim 1, characterized in that The overall shape of the rotating frame (402) is J-shaped. The end of the rotating frame (402) is arc-shaped, and the two rotating frames (402) are arranged oppositely.

3. A fault diagnosis device for a wind turbine according to claim 1, characterized in that, A handle (404) is fixedly connected to the placement frame (403). A sheath (405) is provided on the handle (404).

4. A fault diagnosis device for a wind turbine according to claim 1, characterized in that, Two mounting blocks (501) are fixedly connected to the placement frame (403). The ultrasonic flaw detector main body (502) is jointly mounted on the two mounting blocks (501). A connecting wire (503) is provided on the ultrasonic flaw detector main body (502). The connecting wire (503) is connected to the probe body (407).

5. A fault diagnosis device for a wind turbine according to claim 1, characterized in that, Multiple groups of ball bearings (8) are provided inside the first tightening hoop (1) and the second tightening hoop (2). Each group of ball bearings (8) has multiple, and the multiple ball bearings (8) in each group are distributed in an annular array.

6. The fault diagnosis device for a wind turbine according to claim 1, characterized in that, The fixing mechanism (3) includes docking blocks (301). Two docking blocks (301) are respectively fixedly connected to the first tightening hoop (1) and the second tightening hoop (2), and the docking blocks (301) on the first tightening hoop (1) and the second tightening hoop (2) are in contact with each other in pairs.

7. The fault diagnosis device for a wind turbine according to claim 6, wherein The two mutually contacting docking blocks (301) are fixedly connected by bolts (302), and nuts (303) are threadedly connected to the bolts (302).

8. A fault diagnosis device for a wind turbine according to claim 1, characterized in that, The protection mechanism (7) includes a protection frame (701), the protection frame (701) is fixedly connected to the placement frame (403), a connecting shaft (705) is rotatably connected inside the protection frame (701), a storage roller (706) is fixedly connected to the connecting shaft (705), a covering cloth (707) is wound around the storage roller (706), a plug (702) is slidably connected to the protection frame (701), one end of the covering cloth (707) is fixedly connected to the connecting shaft (705), and the other end is fixedly connected to the plug (702).

9. The fault diagnosis device for a wind turbine according to claim 8, wherein, A push block (703) is fixedly connected to the plug (702), and a clamping groove (704) is provided at the bottom of the inner cavity of the protection frame (701), and a damping pad (709) is provided in the clamping groove (704).

10. The fault diagnosis device for a wind turbine according to claim 9, characterized in that, One end of a hairspring (708) is fixedly connected to each of the two ends of the connecting shaft (705), and the other end of the hairspring (708) is fixedly connected to the inside of the protection frame (701).

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