Fan gear box with gear tooth state monitoring function

Abstract

The invention belongs to the field of fan gear boxes, and particularly relates to a fan gear box with a gear tooth state monitoring function, which comprises a fan gear box body, and a monitor is mounted on one side of the fan gear box body. The monitor comprises a central control module, a sensor module, a signal processing module, a control module, a wireless communication module, an alarm module and a power supply module, the sensor module is connected with the central control module, the signal processing module is connected with the central control module, the control module is connected with the central control module, and the wireless communication module is connected with the alarm module. The wireless communication module is connected with the central control module, and the alarm module is connected with the central control module. The system is reasonable in design, through multi-sensor cooperative accurate and comprehensive monitoring, a flexible and convenient installation structure, an efficient signal processing module and a timely fault early warning mechanism, stable operation of the fan gear box is comprehensively guaranteed, and the monitoring and maintenance efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fan gearboxes, and in particular to a fan gearbox with a tooth condition monitoring function. Background Art

[0002] As a key component in a wind power generation system, the operating state of a fan gearbox directly affects the stability and reliability of the entire wind power generation system. During long-term operation, the teeth are prone to failures such as wear, fatigue, and fracture due to complex loads, friction, and harsh working environments. If these failures cannot be detected and handled in a timely manner, they may lead to damage to the gearbox, and then cause the wind power generation system to shut down, which will not only result in huge economic losses but also affect the stability of power supply.

[0003] Currently, the monitoring means for the tooth state of a fan gearbox are relatively limited, and some monitoring methods have problems such as inaccurate monitoring and poor real-time performance. For example, some traditional monitoring methods can only roughly judge the overall operating state of the gearbox, and it is difficult to accurately obtain the specific state information of the teeth, and it is impossible to detect subtle tooth failures in the early stage, so effective maintenance measures cannot be taken in a timely manner. Therefore, we propose a fan gearbox with a tooth state monitoring function to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies in the prior art and propose a fan gearbox with a tooth state monitoring function.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A fan gearbox with a tooth state monitoring function includes a fan gearbox body. A monitor is installed on one side of the fan gearbox body, and the monitor includes a central control module, a sensor module, a signal processing module, a control module, a wireless communication module, an alarm module, and a power supply module. The sensor module is connected to the central control module, the signal processing module is connected to the central control module, the control module is connected to the central control module, the wireless communication module is connected to the central control module, the alarm module is connected to the central control module, and the power supply module is connected to the central control module, and the alarm module is also connected to the wireless communication module; the sensor module includes a vibration sensor, a temperature sensor, and a strain sensor. The vibration sensor is installed on the inner wall of the fan gearbox body, and the temperature sensor and the strain sensor are installed inside the fan gearbox body, and the temperature sensor and the strain sensor are in contact with the corresponding gears;

[0007] A fixed seat is installed on the bottom inner wall of the fan gearbox body. A T-shaped mounting hole with an open top is formed on one side of the fixed seat. A plurality of T-shaped mounting seats are movably installed in the T-shaped mounting hole. A column is installed on the top of the T-shaped mounting seat through a detachable structure. An L-shaped mounting plate is arranged above the column. A connecting mechanism is arranged between the L-shaped mounting plate and the column. A temperature sensor is installed on the L-shaped mounting plate, and a strain sensor is located above the L-shaped mounting plate. A guiding groove is formed on the L-shaped mounting plate. A guiding seat is slidably installed in the guiding groove. A cross bar is fixedly installed on one side of the guiding seat and is fixedly connected to the strain sensor. A vertical plate is fixedly installed on the L-shaped mounting plate. A fixing screw rod is fixedly installed on one side of the vertical plate. One end of the fixing screw rod is fixedly installed on the L-shaped mounting plate. A guiding hole is formed on the guiding seat, and the fixing screw rod can penetrate through the corresponding guiding hole. Two fixing nuts are threadedly installed on the fixing screw rod, and the guiding seat is located between the two fixing nuts.

[0008] Optionally, the connecting mechanism includes a moving groove and a moving rod. The moving groove is formed on the top of the column. A moving rod is slidably installed in the moving groove, and the top end of the moving rod is fixedly installed on the L-shaped mounting plate. A plurality of fixing grooves are formed on one side of the moving rod. A threaded hole is formed on one side inner wall of the moving groove. A fixing bolt is threadedly installed in the threaded hole, and the fixing bolt is adapted to the threaded hole.

[0009] Optionally, a threaded groove is formed on the top of the T-shaped mounting seat. A threaded rod is fixedly installed at the bottom of the column, and the threaded rod is threadedly installed in the corresponding threaded groove.

[0010] Optionally, a straight rack is fixedly installed on the bottom inner wall of the T-shaped mounting hole. A rectangular hole one with an open bottom is formed on one side of the T-shaped mounting seat. A groove is formed at the bottom of the T-shaped mounting seat. A rotating shaft is rotatably installed on the front side and the rear side inner walls of the groove. An external gear is fixedly installed on the rotating shaft, and the external gear is meshed with the straight rack.

[0011] Optionally, a rectangular hole two is formed on the top inner wall of the groove. A pressing rod is slidably installed in the rectangular hole two. An arc-shaped internal gear is fixedly installed at the bottom of the pressing rod. A plurality of fixing springs are installed on the top of the arc-shaped internal gear, and the top ends of the fixing springs are fixedly installed on the top inner wall of the groove.

[0012] Optionally, the signal processing module includes a signal amplification module, a filtering processing module, and an analog-to-digital conversion module. The filtering processing module is connected to the signal amplification module, and the analog-to-digital conversion module is connected to the filtering processing module.

[0013] Optionally, the control module includes a data receiving module, a parameter analysis module, a parameter comparison module, an anomaly judgment module, and a data update module. The parameter analysis module is connected to the data receiving module, the parameter comparison module is connected to the parameter analysis module, the anomaly judgment module is connected to the parameter comparison module, and the data update module is connected to the anomaly judgment module.

[0014] Optionally, the control module pre-stores the threshold ranges of various parameters such as vibration, temperature, and strain under normal gear tooth conditions. The standard parameter coefficient of the threshold range of each parameter is the first threshold, and the actual collected data parameter coefficient is the second threshold.

[0015] Compare the standard parameter coefficient with the actual collected data parameter coefficient.

[0016] If the first threshold of the standard parameter coefficient ≤ the second threshold of the actual collected data parameter coefficient, it indicates that the gear state is good.

[0017] If the first threshold of the standard parameter coefficient > the second threshold of the actual collected data parameter coefficient, it indicates that the gear state is deviated.

[0018] Optionally, if a certain parameter exceeds the pre-set threshold range, the control module determines that the gear tooth is in an abnormal state, and the control module immediately starts the alarm process. It sends an alarm signal containing information such as the type of anomaly, the time of anomaly occurrence, and relevant parameter data to the remote monitoring center through a wireless communication module such as a 4G, 5G, or Wi-Fi module, and at the same time records the anomaly event in the internal storage device for subsequent query and analysis.

[0019] Advantages of the present invention:

[0020] 1. It has the performance of specific, precise, and comprehensive monitoring. Through the collaborative operation of multiple sensors such as vibration, temperature, and strain, it can comprehensively capture the state information of the gear teeth under different working conditions, realizing precise and real-time monitoring of the operating conditions of the gear teeth of the wind turbine gearbox, greatly improving the accuracy and reliability of monitoring.

[0021] 2. It has the performance of convenient and flexible installation. The installation structure composed of a unique T-shaped mounting base, a column, an L-shaped mounting plate, etc. can easily adjust the position of the sensor in the horizontal and vertical directions, and can also be easily fixed and disassembled to adapt to the different gear monitoring requirements of various wind turbine gearboxes.

[0022] 3. It has the performance of efficient signal processing. The signal processing module integrates functions of signal amplification, filtering, and analog-to-digital conversion, can effectively amplify weak original signals, filter out interference noises, and accurately convert analog signals into digital signals to ensure that the control module can accurately identify and analyze data.

[0023] 4. With the performance of timely fault warning, the control module pre-stores the normal gear tooth status parameter threshold, collects data through real-time comparative analysis, and immediately determines that the gear tooth is abnormal once the parameter exceeds the threshold, and quickly starts the alarm process, thus buying valuable time for equipment maintenance and ensuring the stable operation of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a block diagram of a wind turbine gearbox with gear tooth status monitoring function proposed by the present invention;

[0025] Figure 2 This is a block diagram of a sensor module for a wind turbine gearbox with a gear tooth status monitoring function proposed by the present invention;

[0026] Figure 3 This is a block diagram of a signal processing module of a wind turbine gearbox with a gear tooth status monitoring function proposed by the present invention;

[0027] Figure 4 This is a block diagram of a control module of a wind turbine gearbox with a gear tooth status monitoring function proposed by the present invention;

[0028] Figure 5 This is a schematic diagram of the three-dimensional structure of a wind turbine gearbox with a gear tooth status monitoring function proposed by the present invention;

[0029] Figure 6 This is a schematic diagram of a partial three-dimensional structure of a wind turbine gearbox with a gear tooth status monitoring function proposed by the present invention;

[0030] Figure 7 for Figure 6 A schematic diagram of a partially cutaway three-dimensional structure;

[0031] Figure 8 This is a schematic diagram of the three-dimensional structure of part A of a wind turbine gearbox with a gear tooth condition monitoring function proposed by the present invention;

[0032] Figure 9 for Figure 6 Another partially cutaway three-dimensional structural schematic diagram;

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of part B of a wind turbine gearbox with a gear tooth condition monitoring function proposed by the present invention.

[0034] In the figure: 1. Fan gearbox body; 102. Monitor; 103. Vibration sensor; 201. Fixed seat; 202. T-shaped mounting hole; 203. T-shaped mounting seat; 204. Column; 205. L-shaped mounting plate; 206. Temperature sensor; 207. Strain sensor; 301. Threaded groove; 302. Threaded rod; 401. First rectangular hole; 402. Straight rack; 403. Groove; 404. Rotating shaft; 405. External gear; 406. Second rectangular hole; 407. Extrusion rod; 408. Arc-shaped internal gear; 409. Fixed spring; 501. Moving groove; 502. Moving rod; 503. Fixed groove; 504. Threaded hole; 505. Fixed bolt; 601. Guide groove; 602. Guide seat; 603. Cross bar; 701. Vertical plate; 702. Guide hole; 703. Fixed screw; 704. Fixed nut. Specific embodiments

[0035] The technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0036] When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. "Disposed" represents a way of existence and can be a connection method such as connection, installation, fixed connection, active connection, etc. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0038] Refer to Figure 1-10, a wind turbine gearbox with a tooth state monitoring function, comprising a wind turbine gearbox body 1. A monitor 102 is installed on one side of the wind turbine gearbox body 1. The monitor 102 includes a central control module, a sensor module, a signal processing module, a control module, a wireless communication module, an alarm module, and a power supply module. The sensor module is connected to the central control module, the signal processing module is connected to the central control module, the control module is connected to the central control module, the wireless communication module is connected to the central control module, the alarm module is connected to the central control module, the power supply module is connected to the central control module, and the alarm module is also connected to the wireless communication module. The sensor module includes a vibration sensor 103, a temperature sensor 206, and a strain sensor 207. The vibration sensor 103 is installed on the inner wall of the wind turbine gearbox body 1, and the temperature sensor 206 and the strain sensor 207 are installed inside the wind turbine gearbox body 1, and the temperature sensor 206 and the strain sensor 207 are in contact with the corresponding gears.

[0039] A fixing seat 201 is installed on the bottom inner wall of the wind turbine gearbox body 1. A T-shaped mounting hole 202 with an open top is formed on one side of the fixing seat 201. A plurality of T-shaped mounting seats 203 are movably installed in the T-shaped mounting hole 202. A column 204 is installed on the top of the T-shaped mounting seat 203 through a detachable structure. An L-shaped mounting plate 205 is provided above the column 204. A connecting mechanism is provided between the L-shaped mounting plate 205 and the column 204. The temperature sensor 206 is installed on the L-shaped mounting plate 205, and the strain sensor 207 is located above the L-shaped mounting plate 205. A guiding groove 601 is formed on the L-shaped mounting plate 205. A guiding seat 602 is slidably installed in the guiding groove 601. A cross bar 603 is fixedly installed on one side of the guiding seat 602. The cross bar 603 is fixedly connected to the strain sensor 207. A vertical plate 701 is fixedly installed on the L-shaped mounting plate 205. A fixing screw 703 is fixedly installed on one side of the vertical plate 701. One end of the fixing screw 703 is fixedly installed on the L-shaped mounting plate 205. A guiding hole 702 is formed on the guiding seat 602, and the fixing screw 703 can penetrate through the corresponding guiding hole 702. Two fixing nuts 704 are threadedly installed on the fixing screw 703, and the guiding seat 602 is located between the two fixing nuts 704.

[0040] In this embodiment, the connecting mechanism includes a moving groove 501 and a moving rod 502. The moving groove 501 is formed in the top of the column 204. A moving rod 502 is slidably installed in the moving groove 501, and the top end of the moving rod 502 is fixedly installed on the L-shaped mounting plate 205. A plurality of fixing grooves 503 are formed on one side of the moving rod 502. A threaded hole 504 is formed on the inner wall of one side of the moving groove 501. A fixing bolt 505 is threadedly installed in the threaded hole 504, and the fixing bolt 505 is adapted to the threaded hole 504. By providing the fixing bolt 505 and the fixing grooves 503, the purpose of fixing and releasing the fixing of the moving rod 502 can be achieved.

[0041] In this embodiment, a threaded groove 301 is formed on the top of the T-shaped mounting seat 203. A threaded rod 302 is fixedly installed at the bottom of the column 204, and the threaded rod 302 is threadedly installed in the corresponding threaded groove 301. By providing the threaded rod 302 and the threaded groove 301, the purpose of disassembling and assembling the column 204 can be achieved.

[0042] In this embodiment, a straight rack 402 is fixedly installed on the inner wall of the bottom of the T-shaped mounting hole 202. A rectangular hole 401 with an open bottom is formed on one side of the T-shaped mounting seat 203. A groove 403 is formed at the bottom of the T-shaped mounting seat 203. A rotating shaft 404 is rotatably installed on the inner walls of the front side and the rear side of the groove 403. An external gear 405 is fixedly installed on the rotating shaft 404, and the external gear 405 is engaged with the straight rack 402. By providing the straight rack 402, the T-shaped mounting seat 203 can be rotated during the moving process.

[0043] In this embodiment, a rectangular hole 406 is formed on the inner wall of the top of the groove 403. A pressing rod 407 is slidably installed in the rectangular hole 406. An arc-shaped internal gear 408 is fixedly installed at the bottom of the pressing rod 407. A plurality of fixing springs 409 are installed on the top of the arc-shaped internal gear 408, and the top ends of the fixing springs 409 are fixedly installed on the inner wall of the top of the groove 403. By the cooperation of the arc-shaped internal gear 408 and the external gear 405, the purpose of fixing the T-shaped mounting seat 203 can be achieved.

[0044] In this embodiment, the signal processing module includes a signal amplification module, a filtering processing module, and an analog-to-digital conversion module. The filtering processing module is connected to the signal amplification module, and the analog-to-digital conversion module is connected to the filtering processing module. The control module includes a data receiving module, a parameter analysis module, a parameter comparison module, an anomaly judgment module, and a data update module. The parameter analysis module is connected to the data receiving module, the parameter comparison module is connected to the parameter analysis module, the anomaly judgment module is connected to the parameter comparison module, and the data update module is connected to the anomaly judgment module.

[0045] In this embodiment, the control module pre-stores the threshold ranges of various parameters such as vibration, temperature, and strain in the state of normal gear teeth. The standard parameter coefficient of the threshold range of each parameter is the first threshold, and the actual collected data parameter coefficient is the second threshold;

[0046] Compare the standard parameter coefficient with the actual collected data parameter coefficient;

[0047] If the first threshold of the standard parameter coefficient ≤ the second threshold of the actual collected data parameter, it indicates that the gear state is good;

[0048] If the first threshold of the standard parameter coefficient > the second threshold of the actual collected data parameter, it indicates that the gear state deviates. If a certain parameter exceeds the pre-set threshold range, the control module determines that the gear teeth are in an abnormal state. The control module immediately starts the alarm process. It sends an alarm signal containing information such as the type of abnormality, the time of abnormality occurrence, and relevant parameter data to the remote monitoring center through a wireless communication module such as a 4G, 5G, or Wi-Fi module, and at the same time records the abnormal event in the internal storage device for subsequent query and analysis.

[0049] The working principle of the present invention: Install the T-shaped mounting seat 203 into the T-shaped mounting hole 202, so that the external gear 405 meshes with the straight rack 402. When the T-shaped mounting seat 203 moves, the external gear 405 rotates. By moving the T-shaped mounting seat 203, the temperature sensor 206 and the strain sensor 207 can be adjusted in the horizontal mounting position. When the threaded rod 302 on the column 204 is threadedly installed into the threaded groove 301, the column 204 can be fixedly installed on the T-shaped mounting seat 203, and the temperature sensor 206 and the strain sensor 207 can be initially installed. When the threaded rod 302 is installed into the threaded groove 301, the threaded rod 302 can squeeze the extrusion rod 407 downward, and the extrusion rod 407 can drive the arc-shaped internal gear 408 to move downward, so that the arc-shaped internal gear 408 meshes with the external gear 405, thereby achieving the purpose of fixing the T-shaped mounting seat 203 in the horizontal direction. Through the cooperation of the fixing bolt 505 and the fixing groove 503, the purpose of fixing and releasing the fixing of the moving rod 502 can be achieved. The moving rod 502 can drive the L-shaped mounting plate 205 to move upward, and the L-shaped mounting plate 205 can drive the temperature sensor 206 to contact the corresponding gear. Through the moving guide seat 602, the guide seat 602 drives the strain sensor 207 to contact the gear through the cross bar 603. By rotating the fixing nut 704, under the action of the fixing screw 703, the fixing nut 704 rotates and moves at the same time, and the fixing nut 704 can achieve the purpose of fixing the guide seat 602;

[0050] Multiple vibration sensors 103 can capture the vibration signals of the gear teeth in different directions and positions. The temperature sensor 206 can collect the temperature of the gear. According to the force characteristics of the gear teeth, the strain sensors 207 are reasonably distributed at the tooth roots, tooth tips and other parts where large strains are likely to occur. It continuously monitors the strain of the gear teeth and transmits the strain data to the signal processing module in real time. The signal amplification module can amplify the original signal. The noise and interference are removed by the filtering processing module. The analog signal after amplification and filtering is converted into a digital signal by the analog-to-digital conversion module before it can be recognized and processed by the control module. The control module pre-stores the threshold ranges of various parameters such as vibration, temperature, and strain under the normal gear tooth state. These thresholds are obtained through a large number of experiments and statistical analysis of actual operation data. After receiving the new gear tooth state data, the control module extracts and calculates the various parameters in the data, such as calculating the peak value, mean value, and frequency components of the vibration signal, the change rate of the temperature, and the maximum value of the strain, etc. Then, these calculation results are compared and analyzed one by one with the pre-stored thresholds. If a certain parameter exceeds the pre-set threshold range, the control module determines that the gear teeth are in an abnormal state. It sends an alarm signal containing information such as the type of abnormality, the time of abnormality occurrence, and relevant parameter data to the remote monitoring center through the wireless communication module, and at the same time records the abnormal event in the internal storage device for subsequent query and analysis.

[0051] The above has introduced in detail a fan gearbox with a gear tooth state monitoring function provided by the present invention. Specific embodiments are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A wind turbine gearbox with a tooth state monitoring function, characterized in that, It includes a wind turbine gearbox body (1). A monitor (102) is installed on one side of the wind turbine gearbox body (1). The monitor (102) includes a central control module, a sensor module, a signal processing module, a control module, a wireless communication module, an alarm module, and a power supply module. The sensor module is connected to the central control module, the signal processing module is connected to the central control module, the control module is connected to the central control module, the wireless communication module is connected to the central control module, the alarm module is connected to the central control module, the power supply module is connected to the central control module, and the alarm module is also connected to the wireless communication module; The sensor module includes a vibration sensor (103), a temperature sensor (206), and a strain sensor (207). The vibration sensor (103) is installed on the inner wall of the wind turbine gearbox body (1), and the temperature sensor (206) and the strain sensor (207) are installed inside the wind turbine gearbox body (1). The temperature sensor (206) and the strain sensor (207) are in contact with the corresponding gears; A fixing seat (201) is installed on the bottom inner wall of the wind turbine gearbox body (1). A T-shaped mounting hole (202) with an open top is formed on one side of the fixing seat (201). A plurality of T-shaped mounting seats (203) are movably installed in the T-shaped mounting hole (202). A column (204) is installed on the top of the T-shaped mounting seat (203) through a detachable structure. An L-shaped mounting plate (205) is arranged above the column (204). A connecting mechanism is arranged between the L-shaped mounting plate (205) and the column (204). The temperature sensor (206) is installed on the L-shaped mounting plate (205), and the strain sensor (207) is located above the L-shaped mounting plate (205); A guiding groove (601) is formed on the L-shaped mounting plate (205). A guiding seat (602) is slidably installed in the guiding groove (601). A cross bar (603) is fixedly installed on one side of the guiding seat (602). The cross bar (603) is fixedly connected to the strain sensor (207). A vertical plate (701) is fixedly installed on the L-shaped mounting plate (205). A fixing screw (703) is fixedly installed on one side of the vertical plate (701). One end of the fixing screw (703) is fixedly installed on the L-shaped mounting plate (205). A guiding hole (702) is formed on the guiding seat (602), and the fixing screw (703) can penetrate through the corresponding guiding hole (702). Two fixing nuts (704) are threadedly installed on the fixing screw (703), and the guiding seat (602) is located between the two fixing nuts (704).

2. The wind turbine gearbox with a tooth state monitoring function according to claim 1, characterized in that, The connecting mechanism includes a moving groove (501) and a moving rod (502). The moving groove (501) is formed at the top of the column (204). A moving rod (502) is slidably installed in the moving groove (501), and the top end of the moving rod (502) is fixedly installed on the L-shaped mounting plate (205). A plurality of fixing grooves (503) are formed on one side of the moving rod (502). A threaded hole (504) is formed on one inner wall of the moving groove (501). A fixing bolt (505) is threadedly installed in the threaded hole (504), and the fixing bolt (505) is adapted to the threaded hole (504).

3. The wind turbine gearbox with a tooth state monitoring function according to claim 1, characterized in that, A threaded groove (301) is formed at the top of the T-shaped mounting seat (203). A threaded rod (302) is fixedly installed at the bottom of the column (204), and the threaded rod (302) is threadedly installed in the corresponding threaded groove (301).

4. A wind turbine gearbox with a tooth condition monitoring function according to claim 1, characterized in that, A straight rack (402) is fixedly installed on the bottom inner wall of the T-shaped mounting hole (202). A rectangular hole one (401) with an open bottom is formed on one side of the T-shaped mounting seat (203). A groove (403) is formed at the bottom of the T-shaped mounting seat (203). A rotating shaft (404) is rotatably installed on the front and rear inner walls of the groove (403). An external gear (405) is fixedly installed on the rotating shaft (404), and the external gear (405) meshes with the straight rack (402).

5. The wind turbine gearbox with a gear tooth condition monitoring function according to claim 4, characterized in that, A rectangular hole two (406) is formed on the top inner wall of the groove (403). A pressing rod (407) is slidably installed in the rectangular hole two (406). An arc-shaped internal gear (408) is fixedly installed at the bottom of the pressing rod (407). A plurality of fixing springs (409) are installed on the top of the arc-shaped internal gear (408), and the top ends of the fixing springs (409) are fixedly installed on the top inner wall of the groove (403).

6. The wind turbine gearbox with a tooth state monitoring function according to claim 1, characterized in that, The signal processing module includes a signal amplification module, a filtering processing module, and an analog-to-digital conversion module. The filtering processing module is connected to the signal amplification module, and the analog-to-digital conversion module is connected to the filtering processing module.

7. The fan gearbox with a tooth state monitoring function according to claim 1, characterized in that The control module includes a data receiving module, a parameter analysis module, a parameter comparison module, an anomaly judgment module, and a data update module. The parameter analysis module is connected to the data receiving module, the parameter comparison module is connected to the parameter analysis module, the anomaly judgment module is connected to the parameter comparison module, and the data update module is connected to the anomaly judgment module.

8. A wind turbine gearbox with a tooth condition monitoring function according to claim 7, characterized in that, The control module pre-stores the threshold ranges of various parameters such as vibration, temperature, and strain in the normal tooth state. The standard parameter coefficient of the threshold range of each parameter is the first threshold, and the actual collected data parameter coefficient is the second threshold; Compare the standard parameter coefficient with the actual collected data parameter coefficient; If the standard parameter coefficient first threshold ≤ the actual collected data parameter coefficient is the second threshold, it indicates that the gear state is good; If the standard parameter coefficient first threshold > the actual collected data parameter coefficient is the second threshold, it indicates that the gear state is deviated.

9. The wind turbine gearbox with a tooth state monitoring function according to claim 8, characterized in that, If a parameter of the second threshold exceeds the pre-set threshold range, the control module determines that the gear teeth are in an abnormal state, and the control module immediately starts the alarm process. It sends an alarm signal containing information such as the abnormality type, the time of the abnormality, and related parameter data to the remote monitoring center through the wireless communication module, and records the abnormal event in the internal storage device for subsequent query and analysis.

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