A wind turbine main shaft operation state monitoring device and a monitoring method thereof

Abstract

The application relates to the field of wind power generation technology, in particular to a wind turbine main shaft operation state monitoring device and a monitoring method thereof. The device comprises a wind turbine tower body and a nacelle arranged at the top end, the nacelle is provided with a main shaft, a monitoring assembly is arranged on the outside of the main shaft in the nacelle and used for monitoring the operation state of the main shaft, the monitoring assembly comprises two arc-shaped plates which are spliced with each other, the splicing surfaces of the two arc-shaped plates are respectively provided with a slot and a rod, the inside of the tower body is provided with a tower cavity, a fixed plate is arranged on the inner wall of the bottom end of the tower cavity, one side of the fixed plate is provided with a mounting groove, the inner wall of the mounting groove is symmetrically provided with a fixing assembly, and a processing assembly is arranged in the mounting groove. The application is convenient for assembling and disassembling the monitoring assembly and the processing assembly, avoids the use of bolts to increase the complexity of the mounting and dismounting process, and is convenient for dismounting and repairing when a fault occurs.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation technology, in particular to a wind turbine main shaft operation state monitoring device and a monitoring method thereof. BACKGROUND

[0002] The application of wind turbine monitoring is a major pillar of China's power energy sources, and the wind turbine monitoring is a green and environmentally friendly recyclable power generation device, which has become one of the indispensable power generation methods in the future. As a key component of the transmission system of the wind turbine, the main shaft is subjected to a huge random impact force due to the influence of random natural wind, resulting in various types of faults.

[0003] For example, the patent with the application number CN201110366932.4 includes a signal acquisition module, a signal preprocessing module, a data fusion module and a health state information output module. First, the signals of each component of the wind turbine are collected, the collected signals are preprocessed, and the related data are processed by data fusion to extract data symptom information. Under the action of the inference machine, the data information is matched with the data information in the expert library, and a health state diagnosis decision is made to provide for the user. According to the alarm information or the health state diagnosis decision information, the corresponding action is taken.

[0004] The above patent can collect the health state information of the wind turbine through various sensors, and through threshold control and data fusion, the components that may fail can be judged in advance, thereby ensuring the reliability and accuracy of the health state monitoring and diagnosis decision of the wind turbine. However, the monitoring device mostly needs to be fixed by tightening the bolts with the inner wall of the tower during installation, which is time-consuming to tighten multiple bolts, and the bolts are easy to fall off and lose, resulting in a complicated installation and disassembly process, and when a fault occurs, it is not convenient for the staff to overhaul. SUMMARY

[0005] The present application relates to the field of wind power generation technology, in particular to a wind turbine main shaft operation state monitoring device and a monitoring method thereof.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The utility model provides a kind of wind turbine main shaft operating condition monitoring device, including wind turbine tower body and the cabin of being set at top, the cabin is equipped with main shaft, the inside of the cabin is located the outside of main shaft and is equipped with monitoring assembly for monitoring the operating condition of main shaft, the monitoring assembly includes two mutually spliced arc plates, the splicing surface of two arc plates is respectively provided with slot and inserting rod, the inserting rod is inserted into slot, and the outer wall of two arc plates is fixedly connected with the telescopic end of electric telescopic rod, two electric telescopic rods are fixed on mounting plate, and the inner wall of two mounting plates is attached with the inner wall of cabin, and the arc-shaped inside of two arc plates is sequentially provided with a plurality of vibration sensors, temperature sensors, speed sensors and noise sensors;

[0008] The inside of the tower body is provided with a tower cavity, a fixing plate is installed on the inner wall of the bottom end of the tower cavity, one side of the fixing plate is provided with a mounting slot, the inner wall of the mounting slot is symmetrically provided with a fixing assembly, and a processing assembly is arranged in the mounting slot. The processing assembly includes an outer shell, a processor is installed in the inner shell, a signal transceiver module is electrically connected to one side of the processor, the signal transceiver module is wirelessly connected to the vibration sensor, the temperature sensor, the speed sensor and the noise sensor, and the signal transceiver module is wirelessly connected to a remote monitoring server. The outer shell is provided with a fixing slot on both sides of the outer wall, and the execution end of the fixing assembly is inserted into the fixing slot.

[0009] As a preferred scheme of the present application, the inner wall of the cabin on both sides is integrally provided with a positioning block at the mounting plate, and one side of the mounting plate away from the electric telescopic rod is provided with a positioning slot. The positioning block is inserted into the positioning slot and in contact with the inner wall thereof.

[0010] As a preferred scheme of the present application, the inner wall radius of the two arc plates is greater than the radius of the main shaft, and the end of the plurality of vibration sensors, temperature sensors, speed sensors and noise sensors is close to the outer wall of the main shaft by three centimeters.

[0011] As a preferred scheme of the present application, four corners of the fixing plate are provided with bolts, the shank of the four bolts is fixedly connected with the inner wall of the tower cavity by penetrating the fixing plate, and the outer wall of the outer shell is in sliding connection with the inner wall of the mounting slot.

[0012] As a preferred scheme of the present application, a heat dissipation hole slot is formed in the center of one side of the outer shell away from the fixing plate, a dust screen is installed on the end face of the outer shell at the heat dissipation hole slot through screws, an electric motor is fixedly installed at the center of the dust screen, the output end of the electric motor extends into the heat dissipation hole slot through the dust screen, and a fan blade is fixedly installed on the outer wall of the output end of the electric motor.

[0013] As a preferred scheme of the present application, the fixing assembly comprises square grooves opened at the top and bottom of the mounting groove, threaded rods vertically arranged in the two square grooves, cavities opened at the side of the fixing plate away from the mounting groove, rotating shafts vertically movably arranged in the two cavities, turbines fixedly arranged on the two rotating shafts, worms meshingly connected to one side of the two turbines, and sleeves arranged on the two threaded rods.

[0014] As a preferred scheme of the present application, the end face of the fixing plate is provided with a handle at the two sides of the mounting groove, one end of each of the two worms is rotationally connected to the cavity wall, the other end of each of the two worms is fixedly connected to the handle through the cavity, the end face of each of the two handles is eccentrically fixed with a handle, and the bottom end of each of the two sleeves is matched with the fixing groove.

[0015] As a preferred scheme of the present application, the cross-sectional shape of each of the two sleeves is the same as that of the square groove, and the outer wall of each of the two sleeves is in sliding connection with the inner wall of the square groove.

[0016] According to the technical scheme of the wind turbine main shaft running state monitoring device, a monitoring method of the wind turbine main shaft running state monitoring device is further provided, comprising the following steps.

[0017] Step one, install the processing assembly and the monitoring assembly respectively, fix the fixing plate on the inner wall of the tower cavity through bolts, then insert the shell of the processing assembly into the mounting groove, manually rotate the handle to make the sleeve move downward along the square groove until it is inserted into the fixing groove to complete the installation of the processing assembly, and then horizontally place the monitoring assembly to make the positioning groove butt joint with the positioning block, at this time, the two arc-shaped plates are located at the two sides of the main shaft, at this time, start the electric telescopic rod to make it push the arc-shaped plates to approach each other and sleeve the main shaft until the inserting rod is inserted into the inserting slot, and under the pushing force of the electric telescopic rod, the two arc-shaped plates are in close contact, the two mounting plates are in contact with the cabin wall of the nacelle to complete the installation.

[0018] Step two, monitor the running state, the vibration sensor, the temperature sensor, the rotating speed sensor and the noise sensor respectively monitor the data of the running main shaft, and transmit the monitored data to the processor, compare the data with the stored normal state data interval by the processor, and judge whether the state is abnormal.

[0019] As a preferred scheme of the present application, in step two, after judging whether the state is abnormal, transmit the result to the remote monitoring service end through the signal transceiving module, so that the staff can remotely master the running state of the main shaft.

[0020] Compared with the prior art, the device has the beneficial effects that: the device is convenient for assembling and disassembling the monitoring assembly and the processing assembly, avoids the use of bolts to increase the complexity of the installation and disassembly process, and is convenient for disassembly and maintenance when a fault occurs;

[0021] By fixing the fixing plate on the inner wall of the tower cavity, then inserting the shell of the processing assembly into the installation slot, manually rotating the rotating handle, the rotating handle drives the worm to rotate, the rotating worm drives the meshing turbine to rotate, the rotating turbine drives the rotating shaft to rotate, the rotating rotating shaft drives the threaded rod to rotate, so that the sleeve moves vertically along the rotation of the threaded rod, until it is inserted into the fixed slot, the installation of the processing assembly is completed;

[0022] Then place the monitoring assembly horizontally, so that the positioning groove is connected with the positioning block, at this time the two arc-shaped plates are on both sides of the main shaft, at this time the electric telescopic rod is started, the telescopic end of the electric telescopic rod pushes the arc-shaped plate to move towards the main shaft direction, until the end surfaces of the two arc-shaped plates are in close contact to form a ring-shaped sleeve outside the main shaft, at this time the plug rod is inserted into the plug slot, under the action of the electric telescopic rod, the two arc-shaped plates abut each other and make the two mounting plates and the cabin wall in close contact through the action force, the installation of the monitoring assembly is completed. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a sectional view of the overall structure of the application;

[0024] Figure 2 It is an enlarged view of A of the application;

[0025] Figure 3 It is an enlarged view of B of the application;

[0026] Figure 4 It is a cabin overhead sectional view of the application;

[0027] Figure 5 It is a monitoring assembly structure diagram of the application;

[0028] Figure 6 It is a schematic view of the structure of the fixing plate of the application;

[0029] Figure 7 It is a schematic view of the structure of the fixing assembly.

[0030] In the figure: 1, wind turbine tower; 101, nacelle; 1011, positioning block; 102, main shaft; 2, monitoring assembly; 201, arc plate; 2011, slot; 2012, insertion rod; 202, vibration sensor; 203, temperature sensor; 204, rotating speed sensor; 205, noise sensor; 206, electric telescopic rod; 207, mounting plate; 2071, positioning slot; 3, tower cavity; 4, fixing plate; 401, mounting slot; 402, bolt; 5, processing assembly; 501, shell; 5011, fixing slot; 502, processor; 503, signal transceiver module; 504, heat dissipation hole slot; 505, dustproof net; 506, electric motor; 507, fan blade; 6, fixing assembly; 601, square slot; 602, sleeve; 603, threaded rod; 604, cavity; 605, rotating shaft; 606, turbine; 607, worm; 608, handle; 6081, handle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0032] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0033] It should be noted that when an element is referred to as being "fixedly attached" to another element, it can be directly on the other element or there can be intervening elements. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. As used herein the terms "vertical", "horizontal", "left", "right" and the like are merely for purposes of illustration.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0035] Please refer to Figure 1 ,Figure 4 And Figure 5 The application provides a technical scheme: a wind turbine main shaft operation state monitoring device, which comprises a wind turbine tower body 1 and a nacelle 101 arranged at the top end, a main shaft 102 is arranged in the nacelle 101, a monitoring assembly 2 is arranged on the outside of the main shaft 102 in the nacelle 101 and used for monitoring the operation state of the main shaft 102, the monitoring assembly 2 comprises two arc-shaped plates 201 which are spliced with each other, a slot 2011 and a rod 2012 are arranged on the spliced surfaces of the two arc-shaped plates 201 respectively, the rod 2012 is inserted into the slot 2011, the outer walls of the two arc-shaped plates 201 are both fixedly connected with the extension end of an electric telescopic rod 206, the two electric telescopic rods 206 are both fixed on a mounting plate 207, the two mounting plates 207 are both attached to the inner wall of the nacelle 101, a plurality of vibration sensors 202, temperature sensors 203, rotation speed sensors 204 and noise sensors 205 are sequentially arranged in the arc-shaped interiors of the two arc-shaped plates 201, the inner walls of the two sides of the nacelle 101 are both integrally provided with a positioning block 1011 at the mounting plate 207, one side of the two mounting plates 207 away from the electric telescopic rod 206 is provided with a positioning groove 2071, the positioning block 1011 is inserted into the positioning groove 2071 and is in contact with the inner wall of the positioning groove 2071, the inner wall radius of the two arc-shaped plates 201 is greater than the radius of the main shaft 102, the end of the plurality of vibration sensors 202, temperature sensors 203, rotation speed sensors 204 and noise sensors 205 is close to the outer wall of the main shaft 102 by three centimeters, wherein the vibration sensor 202 is of the KH574-5 type, the temperature sensor 203 is of the D6T-44L-06 type, the rotation speed sensor 204 is of the ADK-1050D type, and the noise sensor 205 is of the RS-ZS-N01-FL type, the inside of the tower body 1 is provided with a tower cavity 3, a fixing plate 4 is arranged on the bottom end inner wall of the tower cavity 3 through bolts, four corners of the fixing plate 4 are all provided with bolts 402, the shanks of the four bolts 402 are all fixedly connected with the inner walls of the tower cavity 3 and the fixing plate 4, one side of the fixing plate 4 is provided with a mounting groove 401, the inner wall of the mounting groove 401 is symmetrically provided with a fixing assembly 6, and the mounting groove 401 is provided with a processing assembly 5, the processing assembly 5 comprises an outer shell 501, the outer wall of the outer shell 501 is in sliding connection with the inner wall of the mounting groove 401, a processor 502 is arranged in the inner shell 501, one side of the processor 502 is electrically connected with a signal transceiver module 503, the signal transceiver module 503 is wirelessly connected with the vibration sensor 202, the temperature sensor 203, the rotation speed sensor 204 and the noise sensor 205, and the signal transceiver module 503 is wirelessly connected with a remote monitoring server 7, the outer walls of the two sides of the outer shell 501 are both provided with a fixing groove 5011, and the execution end of the fixing assembly 6 is in plug-in connection with the fixing groove 5011.

[0036] In the installation process of the processing assembly 5, the worker fixes the fixing plate 4 on the inner wall of the tower cavity 3 through the bolt 402, and then inserts the shell 501 of the processing assembly 5 into the installation slot 401, and the worker manually rotates the fixing assembly 6 so that the execution end thereof is inserted and fixed on the fixing slot 5011 formed on the shell 501, and the installation is completed;

[0037] In the installation process of the monitoring assembly 2, the monitoring assembly 2 is placed horizontally, so that the positioning slot 2071 formed on the installation plate 207 is in butt joint with the positioning block 1011, and at this time, the two arc-shaped plates 201 are located on both sides of the main shaft 102, and at this time, the electric telescopic rod 206 is started, and the telescopic end of the electric telescopic rod 206 pushes the arc-shaped plates 201 to move towards the main shaft 102 until the end surfaces of the two arc-shaped plates 201 are in close contact to form a ring-shaped sleeve outside the main shaft 102, and at this time, the insertion rod 2012 is inserted into the insertion slot 2011 to avoid misalignment of the two arc-shaped plates 201, and under the action of the electric telescopic rod 206, the two arc-shaped plates 201 abut against each other and make the two installation plates 207 in close contact with the cabin wall of the cabin 101 through the action force, so that the unfolded monitoring assembly 2 can be in close contact in the cabin 101, and the rapid installation is completed, and after the installation, the running state of the main shaft 102 is monitored by the multiple vibration sensors 202, temperature sensors 203, rotation speed sensors 204 and noise sensors 205, and the monitored values are transmitted to the processing assembly 5, received by the signal transceiver module 503 and transmitted to the processor 502 for comparison with the stored normal state data interval to determine whether the running state of the main shaft is abnormal, and finally the result of the determination is transmitted to the remote monitoring server 7 through the signal transceiver module 503, so that the worker can remotely master the running state of the main shaft 102;

[0038] Through the rapid installation of the monitoring assembly 2 and the processing assembly 5, the use of bolts in the installation process is avoided, and the process of installation and disassembly is simplified, and when a fault occurs, the disassembly and repair can be facilitated.

[0039] Embodiments, please refer to Figure 1 , Figure 3 and Figure 6 , the shell 501 is provided with a heat dissipation hole slot 504 at the center of the side away from the fixing plate 4, a dust screen 505 is installed on the end surface of the shell 501 at the heat dissipation hole slot 504 through screws, an electric motor 506 is fixedly installed at the center of the dust screen 505, the output end of the electric motor 506 extends to the heat dissipation hole slot 504 through the dust screen 505, and the output end of the electric motor 506 is fixedly installed with a fan blade 507, and the dust screen 505 is used to filter external dust to reduce the possibility of dust entering the shell 501.

[0040] When the processor 502 in the processing assembly 5 processes the accepted data, heat is generated, and in order to avoid high temperature and reduce the service life, the electric motor 506 is in operation when the processing assembly 5 is working, the output end of the electric motor 506 drives the fan blade 507 to rotate, and the heat inside the shell 501 is discharged to achieve cooling.

[0041] Embodiments, please refer to Figure 1 、 Figure 2 、 Figure 6 and Figure 7 , the fixing assembly 6 comprises a square groove 601 opened at the top and bottom of the mounting groove 401, a threaded rod 603 is vertically arranged in the two square grooves 601, a cavity 604 is opened in the fixing plate 4 inside the side away from the mounting groove 401 of the square groove 601, a rotating shaft 605 is vertically movably arranged in the two cavities 604, a turbine 606 is fixedly arranged on the two rotating shafts 605, a worm 607 is meshed and connected on one side of the two turbines 606, the top end of the two threaded rods 603 passes through the square groove 601 and is welded and fixed with the rotating shaft 605, a sleeve 602 is sleeved on the two threaded rods 603, the end face of the fixing plate 4 is provided with a handle 608 on both sides of the mounting groove 401, one end of the two worms 607 is rotatably connected with the cavity wall of the cavity 604, and the other end of the two worms 607 is fixedly connected with the handle 608 through the cavity 604, the end face of the two handles 608 is eccentrically fixed with a handle 6081, the bottom end of the two sleeves 602 is matched with the fixed groove 5011, the cross-sectional shape of the two sleeves 602 is the same as that of the square groove 601, and the outer wall of the two sleeves 602 is in sliding connection with the inner wall of the square groove 601.

[0042] When the shell 501 is fixed by the fixing assembly 6, the worker manually rotates the handle 6081 to rotate the handle 608, the handle 608 drives the worm 607 to rotate, the rotating worm 607 drives the meshed turbine 606 to rotate, the rotating turbine 606 drives the rotating shaft 605 to rotate, and the rotating rotating shaft 605 drives the threaded rod 603 to rotate, so that the sleeve 602 moves vertically along the square groove 601 with the rotation of the threaded rod 603, until the bottom end is inserted into the fixed groove 5011, the installation of the processing assembly 5 is completed, and the operation is simple and convenient.

[0043] According to the above embodiment, a wind turbine main shaft running state monitoring device and a monitoring method thereof are also provided, comprising the following steps:

[0044] Step one, install the processing assembly 5 and the monitoring assembly 2 respectively, fix the fixed plate 4 on the inner wall of the tower cavity 3 through the bolt 402, then insert the shell 501 of the processing assembly 5 into the installation slot 401, manually rotate the rotating handle 608, make the sleeve 602 move downward along the square slot 601 until it is inserted into the fixed slot 5011 to complete the installation of the processing assembly 5; then place the monitoring assembly 2 horizontally, make the positioning slot 2071 butt joint with the positioning block 1011, at this time the two arc-shaped plates 201 are on both sides of the main shaft 102, at this time start the electric telescopic rod 206, make it push the arc-shaped plates 201 to approach each other and sleeve the main shaft 102, until the inserting rod 2012 is inserted into the inserting slot 2011, under the pushing force of the electric telescopic rod 206, the two arc-shaped plates 201 are in close contact, the two installation plates 207 contact with the cabin wall of the cabin 101 to complete the installation;

[0045] Step two, monitor the running state, the vibration sensor 202, the temperature sensor 203, the rotating speed sensor 204 and the noise sensor 205 respectively monitor the data of the running main shaft, and transmit the monitored data to the processor 502, compare the data with the stored normal state data interval by the processor 502, judge whether the state is abnormal, in the step two, after judging whether the state is abnormal, transmit the result to the remote monitoring service end 7 through the signal transceiver module 503, so that the staff can remotely master the running state of the main shaft 102.

[0046] The working procedure of the present application is as follows: firstly, the processing assembly 5 and the monitoring assembly 2 are respectively installed; when the processing assembly 5 is installed, the staff member fixes the fixed plate 4 on the inner wall of the tower cavity 3 through the bolt 402, then inserts the shell 501 of the processing assembly 5 into the installation slot 401, and rotates the handle 608 through the handle 6081, so that the worm 607 is rotated, the meshed turbine 606 is rotated, the rotating shaft 605 is rotated, the threaded rod 603 is rotated, the sleeve 602 is vertically moved along the square slot 601 following the rotation of the threaded rod 603, until the bottom end is inserted into the fixed slot 5011, and the installation is completed; then the monitoring assembly 2 is horizontally placed, so that the positioning slot 2071 formed on the installation plate 207 is butted with the positioning block 1011, at this time, the two arc-shaped plates 201 are located on both sides of the main shaft 102, at this time, the electric telescopic rod 206 is started, and the telescopic end of the electric telescopic rod 206 pushes the arc-shaped plate 201 to move towards the main shaft 102, until the end surfaces of the two arc-shaped plates 201 are in close contact to form an annular sleeve outside the main shaft 102, at this time, the inserting rod 2012 is inserted into the inserting slot 2011, so as to avoid the misalignment of the two arc-shaped plates 201, and under the action of the electric telescopic rod 206, the two arc-shaped plates 201 abut each other and make the two installation plates 207 in close contact with the cabin wall of the cabin 101 through the acting force, so that the unfolded monitoring assembly 2 can be in close contact in the cabin 101, and the rapid installation is completed; after the installation, the running state of the main shaft 102 is monitored by the multiple vibration sensors 202, temperature sensors 203, rotating speed sensors 204 and noise sensors 205 respectively, and the monitored values are transmitted to the processing assembly 5, received by the signal transceiver module 503 and transmitted to the processor 502 to be compared with the stored normal state data interval, so as to judge whether the running state of the main shaft is abnormal, finally, the result of the judgment is transmitted to the remote monitoring service end 7 through the signal transceiver module 503, so that the staff member can remotely master the running state of the main shaft 102.

[0047] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A wind turbine main shaft operating status monitoring device, comprising a wind turbine tower (1) and a nacelle (101) disposed at the top, characterized in that, The engine compartment (101) houses a main spindle (102). Inside the engine compartment (101), a monitoring component (2) is fitted around the main spindle (102) to monitor its operating status. The monitoring component (2) comprises two interlocking arc-shaped plates (201). The interlocking surfaces of the two arc-shaped plates (201) are respectively provided with slots (2011) and inserts (2012). The inserts (2012) are inserted into the slots (2011). Furthermore, the outer walls of the two arc-shaped plates (201) are fixedly connected with the telescopic ends of electric telescopic rods (206), the two electric telescopic rods (206) are fixed on the mounting plate (207), the two mounting plates (207) are in contact with the inner wall of the cabin (101), and multiple vibration sensors (202), temperature sensors (203), speed sensors (204) and noise sensors (205) are sequentially installed inside the arc of the two arc-shaped plates (201); The tower body (1) has a tower cavity (3) inside. A fixing plate (4) is installed on the inner wall of the bottom end of the tower cavity (3). An installation groove (401) is opened on one side of the fixing plate (4). Fixing components (6) are symmetrically arranged on the inner wall of the installation groove (401). A processing component (5) is provided in the installation groove (401). The processing component (5) includes a shell (501). A processor (502) is installed inside the shell (501). One side of the processor (502) is... A signal transceiver module (503) is electrically connected to the side. The signal transceiver module (503) is wirelessly connected to the vibration sensor (202), temperature sensor (203), speed sensor (204) and noise sensor (205). The signal transceiver module (503) is also wirelessly connected to a remote monitoring server (7). Fixing slots (5011) are provided on both outer walls of the housing (501). The actuator of the fixing component (6) is plugged into the fixing slot (5011).

2. The wind turbine main shaft operating status monitoring device according to claim 1, characterized in that, The inner walls on both sides of the cabin (101) are integrally provided with positioning blocks (1011) at the mounting plates (207). The two mounting plates (207) are provided with positioning grooves (2071) on the side away from the electric telescopic rod (206). The positioning blocks (1011) are inserted into the positioning grooves (2071) and contact their inner walls.

3. The wind turbine main shaft operating status monitoring device according to claim 1, characterized in that, The inner wall radii of the two arc plates (201) are both larger than the radius of the main shaft (102), and the ends of the multiple vibration sensors (202), temperature sensors (203), speed sensors (204) and noise sensors (205) are all three centimeters away from the outer wall of the main shaft (102).

4. The wind turbine main shaft operating status monitoring device according to claim 1, characterized in that, Bolts (402) are installed at the four corners of the fixing plate (4). The bolts (402) penetrate the fixing plate (4) and are fixedly connected to the inner wall of the tower cavity (3). The outer wall of the outer shell (501) is in contact with the inner wall of the mounting groove (401) and is in a sliding connection.

5. The wind turbine main shaft operating status monitoring device according to claim 1, characterized in that, A heat dissipation slot (504) is provided in the center of the side of the outer shell (501) away from the fixing plate (4). A dustproof net (505) is installed on the end face of the outer shell (501) at the heat dissipation slot (504) by screws. An electric motor (506) is fixedly installed in the center of the dustproof net (505). The output end of the electric motor (506) extends through the dustproof net (505) into the heat dissipation slot (504). A fan blade (507) is fixedly installed on the outer wall of the output end of the electric motor (506).

6. The wind turbine main shaft operating status monitoring device according to claim 1, characterized in that, The fixing component (6) includes square grooves (601) formed at the top and bottom of the mounting groove (401). Threaded rods (603) are vertically arranged in the two square grooves (601). The fixing plate (4) has cavities (604) on the side of the square grooves (601) away from the mounting groove (401). Rotating shafts (605) are vertically movably arranged in the two cavities (604). Turbines (606) are fixedly sleeved on the two rotating shafts (605). Worms (607) are meshed with one side of each of the two turbines (606). The top ends of the two threaded rods (603) pass through the square grooves (601) and are welded to the rotating shafts (605). Sleeves (602) are sleeved on the two threaded rods (603).

7. A wind turbine main shaft operating status monitoring device according to claim 6, characterized in that, The end face of the fixing plate (4) is provided with a rotating handle (608) on both sides of the mounting groove (401). One end of each of the two worm gears (607) is rotatably connected to the cavity wall of the cavity (604), and the other end of each of the two worm gears (607) passes through the cavity (604) and is fixedly connected to the rotating handle (608). The end face of each of the two rotating handles (608) is eccentrically fixed with a handle (6081). The bottom ends of the two sleeves (602) are matched with the fixing groove (5011).

8. A wind turbine main shaft operating status monitoring device according to claim 6, characterized in that, The cross-sectional shape of the two sleeves (602) is the same as that of the square groove (601), and the outer walls of the two sleeves (602) are in contact with the inner wall of the square groove (601) and are in a sliding connection.

9. A monitoring method for a wind turbine main shaft operating status monitoring device according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Install the processing component (5) and the monitoring component (2) respectively. Fix the fixing plate (4) to the inner wall of the tower cavity (3) with bolts (402). Then, insert the outer shell (501) of the processing component (5) into the mounting groove (401). Manually rotate the handle (608) to make the sleeve (602) move down along the square groove (601) until it is inserted into the fixing groove (5011) to complete the installation of the processing component (5). Then, place the monitoring component (2) horizontally so that the positioning groove (2071) is in place. The two arc plates (201) are aligned with the positioning block (1011). At this time, both arc plates (201) are on both sides of the main shaft (102). Then, the electric telescopic rod (206) is activated, which pushes the arc plates (201) closer to each other and fits onto the main shaft (102) until the insertion rod (2012) is inserted into the slot (2011). Under the thrust of the electric telescopic rod (206), the two arc plates (201) come into close contact, and the two mounting plates (207) come into contact with the bulkhead of the cabin (101) to complete the installation. Step 2: Monitor the operating status. The vibration sensor (202), temperature sensor (203), speed sensor (204), and noise sensor (205) monitor the data of the running spindle and transmit the monitored data to the processor (502). The processor (502) compares the data with the stored normal status data range to determine whether the status is abnormal.

10. The monitoring method of the wind turbine main shaft operating status monitoring device according to claim 9, characterized in that, In step two, after determining whether the status is abnormal, the result is transmitted to the remote monitoring server (7) through the signal transceiver module (503), so that the staff can remotely monitor the operating status of the spindle (102).

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