A fault detection device and method for the gearbox shaft transmission of a wind turbine generator set.

Abstract

This invention relates to the technical field of wind turbine generators, and more particularly to a fault detection device and method for the gearbox shaft transmission of a wind turbine generator set. The device includes a speed detection mechanism comprising a detection platform, a limit frame fixedly connected to the right side of the top of the detection platform, a clamping plate slidably connected to the left side of the top of the detection platform, hydraulic rods fixedly connected to both the front and back of the detection platform, the piston end of the hydraulic rods fixedly connected to the bottom of the front and rear sides of the right side of the clamping plate, a motor fixedly connected to the left side of the clamping plate, and a detection handle fixedly connected to the output end of the motor extending through to the right side of the clamping plate. A filtration detection mechanism includes an oil drain groove located on the top of the detection platform, vibration grooves on both sides of the inner wall of the oil drain groove, and a vibration frame inside the oil drain groove. The speed detection mechanism detects the speed of the gearbox, the vibration detection mechanism detects the vibration frequency of the gearbox, and the filtration detection mechanism detects the filtration of the discharged lubricating oil.

Description

Technical Field

[0001] This invention relates to the technical field of wind turbine generators, and more particularly to a fault detection device and method for the gearbox shaft transmission of a wind turbine generator set. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives the rotor to rotate and ultimately outputs alternating current. In existing technology, gearboxes are widely used in wind turbine generator sets and are an important mechanical component. The main function of the gearbox is to transmit the power generated by the wind turbine under the action of wind to the generator and enable it to achieve the corresponding speed. Usually, the speed of the wind turbine is very low, far from the speed required by the generator to generate electricity. It must be achieved through the speed-increasing action of the gear pair in the gearbox. Therefore, the gearbox is also called a speed increaser. The gearbox needs to be tested by testing equipment.

[0003] However, current testing equipment typically uses a single motor to drive the testing handle to connect and rotate with the gearbox shaft. Then, the testing handle, equipped with an accelerometer, captures abnormal gear harmonics. Combined with order analysis to eliminate speed fluctuation interference, it determines whether the current gearbox speed is normal. However, during the testing process, users still need to rely on experience and eyesight to judge whether the vibration frequency of the current gearbox rotation is normal, and whether there are foreign objects in the lubricating oil when draining the lubricating oil, and whether the foreign objects are magnetic or non-magnetic. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the current wind turbine gearbox shaft transmission fault detection device, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a fault detection device for the gearbox shaft transmission of a wind turbine generator set, which aims to simultaneously detect vibration and lubricating oil contamination.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including,

[0008] A rotational speed detection mechanism includes a detection platform, a limit frame fixedly connected to the right side of the top of the detection platform, a clamping plate slidably connected to the left side of the top of the detection platform, hydraulic rods fixedly connected to the front and back of the detection platform, the piston end of the hydraulic rods fixedly connected to the bottom of the front and rear sides of the right side of the clamping plate, a motor fixedly connected to the left side of the clamping plate, and a detection handle fixedly connected to the output end of the motor through the right side of the clamping plate.

[0009] The filter testing mechanism includes an oil drain trough located at the top of the testing platform. Vibration grooves are provided on both sides of the inner wall of the oil drain trough. Two vibration frames are provided inside the oil drain trough and are fixed to each other. An electromagnetic screen is fixedly connected inside the top vibration frame, and a non-magnetic screen is fixedly connected inside the bottom vibration frame.

[0010] Vibration detection mechanism, which includes force-bearing components and tilting components.

[0011] As a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, the force-bearing component includes a movable groove, which is opened on the front and rear sides of the top right side of the inner wall of the vibration groove. A force-bearing plate is slidably connected inside the movable groove. The two sides of the bottom of the force-bearing plate are movably connected to the top vibration frame. A vibration detector is fixedly connected to the bottom of the force-bearing plate.

[0012] As a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, the tilting component includes a connecting seat, two connecting seats are provided, the left side of the connecting seat is fixedly connected to the front and rear sides of the bottom right side of the clamping plate, a gear is provided at the bottom of the connecting seat, a screw is internally threaded to the gear, and a lower pressure plate is movably connected to the bottom of the screw.

[0013] As a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, wherein: springs are fixedly connected to the front and rear sides of the bottom of the bottom vibration frame, and a plurality of springs are provided and distributed at equal intervals.

[0014] As a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, wherein: the front and rear sides of the top of the top vibration frame and the front and rear sides of the bottom of the bottom vibration frame are fixedly connected with rubber sealing strips, and the other side of the rubber sealing strips is fixedly connected to the inner wall of the vibration groove.

[0015] As a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, a movable groove is provided on the left side of the top of the inner wall of the vibration groove, and teeth are fixedly connected to the outer side of the inner wall of the movable groove.

[0016] As a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, the teeth are arranged in several groups, and each group has several teeth that are evenly distributed. A rotating ring is fixedly connected to the top of the gear, and a rotating groove is opened at the bottom of the connecting seat.

[0017] In a preferred embodiment of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, the inner wall of the rotating groove is slidably connected to the surface of the upper rotating ring, a limiting rod is fixedly connected to the top of the screw, a limiting sleeve is movably sleeved on the surface of the limiting rod, and the left side of the limiting sleeve is fixedly connected to the right side of the clamping plate.

[0018] The beneficial effects of this invention are: the speed detection mechanism detects the speed of the gearbox, the vibration detection mechanism detects the vibration frequency of the gearbox, and the filtration detection mechanism detects the filtration of the discharged lubricating oil.

[0019] In view of the problems existing in the current wind turbine gearbox shaft transmission fault detection device, the present invention is proposed.

[0020] Therefore, the purpose of this invention is to provide a detection method for a wind turbine generator gearbox shaft transmission fault detection device, the purpose of which is to: detect vibration during gearbox rotation and determine the type of filter material during lubricant discharge.

[0021] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including,

[0022] The speed detection mechanism detects the speed of the gearbox.

[0023] Vibration testing agencies can detect the vibration frequency of gearboxes.

[0024] The filtration testing agency conducts filtration testing on the discharged lubricating oil.

[0025] As a preferred embodiment of the detection method of the wind turbine generator gearbox shaft transmission fault detection device of the present invention, it further includes:

[0026] The gearbox is tested using a speed detection mechanism to detect its rotational speed.

[0027] During the rotational testing process, the vibration testing mechanism can detect the vibration frequency, thereby determining whether the current gearbox vibration frequency is within the normal range.

[0028] After the vibration test is completed, the oil drain port on the gearbox can be opened to drain the lubricating oil. The drained lubricating oil will then be discharged and filtered through a filtration and testing mechanism.

[0029] The beneficial effects of this invention are as follows: the gearbox is tested by a speed detection mechanism to detect the speed of the gearbox. During the rotation detection process, the vibration detection mechanism can detect the vibration frequency, thereby determining whether the vibration frequency of the current gearbox is within the normal range. After the vibration detection is completed, the lubricating oil drain port on the gearbox can be opened for drainage. At this time, the drained lubricating oil will be discharged and filtered through a filter detection mechanism. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0032] Figure 2 This is a cross-sectional structural diagram of the testing station provided by the present invention.

[0033] Figure 3 This is a three-dimensional structural diagram of the clamping plate provided by the present invention.

[0034] Figure 4 This is a cross-sectional structural diagram of the limiting sleeve provided by the present invention.

[0035] Figure 5 A three-dimensional structural diagram of the vibration frame provided by the present invention.

[0036] In the diagram: 100, Rotation speed detection mechanism; 101, Detection table; 102, Limiting frame; 103, Clamping plate; 104, Hydraulic rod; 105, Motor; 106, Detection handle; 200, Filter detection mechanism; 201, Oil drain groove; 202, Vibration groove; 203, Vibration frame; 204, Electromagnetic screen; 205, Non-magnetic screen; 206, Spring; 207, Rubber sealing strip; 300, Vibration detection mechanism; 301, Force-bearing component; 3011, Movable groove; 3012, Force-bearing plate; 3013, Vibration detector; 302, Tilting component; 3021, Connecting seat; 3022, Gear; 3023, Screw; 3024, Lower pressure plate; 3025, Moving groove; 3026, Tooth; 3027, Rotary ring; 3028, Rotary groove; 3029, Limiting rod; 30210, Limiting sleeve. Detailed Implementation

[0037] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0041] Example 1, referring to Figures 1-5 The first embodiment of the present invention provides a detection method for a wind turbine generator gearbox shaft transmission fault detection device, which realizes the detection of speed, vibration and lubrication oil condition.

[0042] The gear 3022 box is placed on the speed detection mechanism 100 for positioning and the speed detection mechanism 100 is started to detect the speed of the gear 3022 box.

[0043] During the rotation detection process, the gearbox 3022 will generate vibrations at a certain frequency. The vibrations generated by the gearbox 3022 will be transmitted to the vibration detection mechanism 300, which will be able to detect the vibration frequency and thus determine whether the vibration frequency of the gearbox 3022 is within the normal range.

[0044] After completing the vibration test, the lubricating oil drain port on the transmission can be opened to drain the oil. The drained oil will then pass through the filter detection mechanism 200 for both drainage and filtration, separating magnetic and non-magnetic substances. The type and amount of filtered material can be used to determine if there is damage to gear 3022 or insufficient sealing in the transmission.

[0045] Example 2, refer to Figures 1-3 , Figure 5In the second embodiment of the present invention, a speed detection mechanism 100 and a filter detection mechanism 200 are provided to detect the rotation of the gearbox and to screen the amount and type of impurities in the discharged lubricating oil.

[0046] The rotational speed detection mechanism 100 includes a detection platform 101. A limit frame 102 is fixedly connected to the right side of the top of the detection platform 101. A clamping plate 103 is slidably connected to the left side of the top of the detection platform 101. Hydraulic rods 104 are fixedly connected to both the front and back of the detection platform 101. The piston end of the hydraulic rod 104 is fixedly connected to the bottom of the front and rear right sides of the clamping plate 103. A motor 105 is fixedly connected to the left side of the clamping plate 103. The output end of the motor 105 extends through to the right side of the clamping plate 103 and is fixedly connected to a detection handle 106.

[0047] The filtration testing mechanism 200 includes an oil drain trough 201, which is located on the top of the testing platform 101. Vibration grooves 202 are provided on both sides of the inner wall of the oil drain trough 201. Two vibration frames 203 are installed inside the oil drain trough 201 and are fixed to each other. An electromagnetic screen 204 is fixedly connected inside the top vibration frame 203, and a non-magnetic screen 205 is fixedly connected inside the bottom vibration frame 203. Several springs 206 are fixedly connected to the front and rear sides of the bottom of the bottom vibration frame 203 and are evenly distributed. Rubber sealing strips 207 are fixedly connected to the front and rear sides of the top and bottom of the top and bottom vibration frames 203, respectively. The other side of the rubber sealing strips 207 is fixedly connected to the inner wall of the vibration groove 202.

[0048] Specifically, the detection handle 106 is connected to the shaft of the gearbox. Then, the starter motor 105 drives the gearbox to rotate via the detection handle 106. At this time, the detection handle 106 can detect the rotation of the gearbox. After the speed detection is completed, the oil drain port of the gearbox is opened. Magnetic impurities in the lubricating oil will be attracted by the electromagnetic screen 204, while non-magnetic impurities will enter the top of the non-magnetic screen 205 and be filtered. By checking the amount of magnetic filter material on the electromagnetic screen 204 and the amount of filter material on the non-magnetic screen 205, the damage of the gear 3022 inside the gearbox or the sealing performance of the gearbox can be determined (too much magnetic filter material indicates that the gear 3022 inside the gearbox is severely damaged, and too much non-magnetic filter material indicates that the current sealing performance of the gearbox is poor, external impurities can easily enter, and lubricating oil can easily leak out).

[0049] Furthermore, when the user needs to inspect the transmission, the transmission is first placed on the testing platform 101. One side of the transmission is limited by the limiting frame 102. Then, the hydraulic rod 104 is activated to move the clamping plate 103 and limit the other side of the transmission. At the same time, the testing handle 106 is engaged with the transmission's shaft. Subsequently, the motor 105 is activated to rotate the transmission via the testing handle 106. At this time, the testing handle 106 can detect the rotation of the transmission. After completing the rotation and vibration tests, the user can activate the hydraulic rod 104 to reset the limiting clamping plate 103 and the motor 105. Then, the oil drain port on the transmission is opened to release the lubricating oil. The lubricating oil will then flow into the drain groove 201 and be discharged. During the discharge process, the discharged lubricating oil can be filtered by the electromagnetic screen 204 and the non-magnetic screen 205. Magnetic impurities are attracted by the electromagnetic screen 204, while non-magnetic impurities enter the top of the non-magnetic screen 205 and are filtered. By checking the amount of magnetic filter material on the electromagnetic screen 204 and the amount of filter material on the non-magnetic screen 205, the damage to the gear 3022 inside the gearbox or the gearbox's sealing performance can be determined. (Too much magnetic filter material indicates severe damage to the gear 3022 inside the gearbox, while too much non-magnetic filter material indicates poor sealing performance, allowing external impurities to easily enter and lubricating oil to easily leak out.) When the gearbox is subjected to rotation and vibration testing in the next test, the vibration force on the force plate 3012 will be transmitted to the vibration frame 203, causing the vibration frame 203 to drive the electromagnetic screen 204 and the non-magnetic screen 205 to vibrate (at this time, the electromagnetic screen 204 is not open, so there is no magnetic adsorption effect). Then, the filter material on the electromagnetic screen 204 and the non-magnetic screen 205 will self-clean through vibration. At the same time, the elasticity of the spring 206 can improve the self-cleaning effect, and the rubber sealing strip 207 will prevent lubricating oil from entering the vibration groove 202 without affecting the vibration of the vibration frame 203.

[0050] Example 3, referring to Figures 1-5 In the third embodiment of the present invention, a vibration detection mechanism 300 is provided to detect the vibration frequency of the gearbox and to self-clean the electromagnetic screen 204 and the non-magnetic screen 205.

[0051] A vibration detection mechanism 300 includes a force-bearing component 301 and an tilting component 302. The force-bearing component 301 includes a movable groove 3011, which is formed on the front and rear sides of the top right side of the inner wall of the vibration groove 202. A force-bearing plate 3012 is slidably connected inside the movable groove 3011. The two sides of the bottom of the force-bearing plate 3012 are movably connected to the top vibration frame 203. A vibration detector 3013 is fixedly connected to the bottom of the force-bearing plate 3012. The tilting component 302 includes a connecting seat 3021. Two connecting seats 3021 are provided. The left side of the connecting seat 3021 is fixedly connected to the front and rear sides of the bottom right side of the clamping plate 103. A gear 3022 is provided at the bottom of the connecting seat 3021. The gear 3022 is internally threaded. A screw 3023 is connected to the top of the vibrating groove 202. A lower pressure plate 3024 is movably connected to the bottom of the screw 3023. A movable groove 3025 is opened on the left side of the top of the inner wall of the vibrating groove 202. A tooth 3026 is fixedly connected to the outer side of the inner wall of the movable groove 3025. Several sets of teeth 3026 are provided, and several teeth are provided in each set and are evenly distributed. A rotating ring 3027 is fixedly connected to the top of the gear 3022. A rotating groove 3028 is opened at the bottom of the connecting seat 3021. The inner wall of the rotating groove 3028 is slidably connected to the surface of the rotating ring 3027. A limiting rod 3029 is fixedly connected to the top of the screw 3023. A limiting sleeve 30210 is movably sleeved on the surface of the limiting rod 3029. The left side of the limiting sleeve 30210 is fixedly connected to the right side of the clamping plate 103.

[0052] Specifically, during the rotation detection of the gearbox, the vibration generated by the gearbox will synchronously drive the lower force plate 3012 to vibrate. At this time, the vibration of the force plate 3012 can synchronously drive the vibration detector 3013 to vibrate. The vibration detector 3013 can synchronously detect the vibration of the gearbox, thereby determining whether the gearbox is damaged. At the same time, during the vibration of the vibration frame 203 to drive the filter material to be discharged, the filter material is discharged by the influence of gravity when tilted. Meanwhile, when the gear 3022 rotates, it will drive the rotating ring 3027 to rotate along the inner wall of the rotating groove 3028, ensuring the stability of the gear 3022 during rotation.

[0053] Furthermore, during the rotational testing of the gearbox, the vibration generated by the gearbox will synchronously drive the lower force plate 3012 to vibrate. At this time, the vibration of the force plate 3012 can synchronously drive the vibration detector 3013 to vibrate. The vibration detector 3013 can synchronously detect the vibration of the gearbox, thereby determining whether the gearbox is damaged. Before the vibration test, the clamping plate 103 will move to the right, causing the clamping plate 103 to drive the corresponding connecting seat 3021 and gear 3022 to move synchronously along the path of the movable groove 3011. Whenever the gear 3022 contacts each set of teeth 3026, it will mesh and drive the gear 3026. 022 rotates, and then gear 3022 will rotate intermittently under the action of each set of teeth 3026. At this time, the screw 3023 can be rotated and limited by the sliding cooperation of limit rod 3029 and limit sleeve 30210. This allows the screw 3023 to move downward under the drive of the rotation of gear 3022, thereby causing the lower pressure plate 3024 to tilt and press down on one side of the vibrating frame 203. Thus, during the process of vibrating the vibrating frame 203 to drive the filter material to be discharged, the filter material is discharged by the influence of gravity when tilted. At the same time, when gear 3022 rotates, it will drive the rotating ring 3027 to rotate along the inner wall of the rotating groove 3028, ensuring the stability of gear 3022 during rotation.

[0054] The remaining structure is the same as that in Example 2.

[0055] Example 4, refer to Figures 1-5 This is the fourth embodiment of the present invention, which differs from the third embodiment in that: this embodiment provides a wind turbine generator gearbox shaft transmission fault detection device and method.

[0056] When the user needs to test the gearbox, the gearbox is first placed on the test bench 101. One side of the gearbox is limited by the limit frame 102. Then, the hydraulic rod 104 is activated to move the clamping plate 103 and limit the other side of the gearbox. At the same time, the test handle 106 is connected to the shaft of the gearbox. Then, the motor 105 is started to drive the gearbox to rotate through the test handle 106. At this time, the test handle 106 can detect the rotation of the gearbox.

[0057] During the rotational testing of the gearbox, the vibration generated by the gearbox will synchronously drive the force plate 3012 below to vibrate. At this time, the vibration of the force plate 3012 can synchronously drive the vibration detector 3013 to vibrate. The vibration detector 3013 can synchronously detect the vibration of the gearbox, thereby determining whether the gearbox is damaged.

[0058] After completing the rotation and vibration detection, the user can activate the hydraulic rod 104 to reset the limit clamping plate 103 and the motor 105. Then, the oil drain port on the gearbox is opened to release the lubricating oil. The lubricating oil flows into the drain groove 201 and is discharged. During the discharge process, the discharged lubricating oil is filtered by the electromagnetic screen 204 and the non-magnetic screen 205. Magnetic impurities are attracted by the electromagnetic screen 204, while non-magnetic impurities enter the top of the non-magnetic screen 205 and are filtered. By observing the amount of magnetic filter material on the electromagnetic screen 204 and the amount of filter material on the non-magnetic screen 205, the user can determine the damage condition of the gear 3022 inside the gearbox or the gearbox's sealing performance (excessive magnetic filter material indicates damage to the gear 3022 inside the gearbox). The damage to 2 is severe, and the excessive amount of non-magnetic filter material indicates poor sealing of the current gearbox, making it easy for external impurities to enter and for lubricating oil to leak out. Furthermore, when the gearbox is subjected to rotation and vibration testing in the next test, the vibration force on the force plate 3012 will be transmitted to the vibration frame 203, causing the vibration frame 203 to drive the electromagnetic screen 204 and the non-magnetic screen 205 to vibrate (at this time, the electromagnetic screen 204 is not turned on, so there is no magnetic adsorption effect). Then, the filter material on the electromagnetic screen 204 and the non-magnetic screen 205 will be self-cleaned by vibration. At the same time, the elasticity of the spring 206 can improve the self-cleaning effect, and the rubber sealing strip 207 will prevent lubricating oil from entering the vibration groove 202 without affecting the vibration of the vibration frame 203.

[0059] Before vibration testing, the clamping plate 103 moves to the right, causing the corresponding connecting seat 3021 and gear 3022 to move synchronously along the path of the movable groove 3011. Whenever the gear 3022 contacts each set of teeth 3026, it meshes and drives the gear 3022 to rotate. Then, the gear 3022 rotates intermittently under the action of each set of teeth 3026. At this time, the sliding engagement between the limiting rod 3029 and the limiting sleeve 30210 can control the screw... The rod 3023 is rotated and limited, so that the screw 3023 can move downward under the drive of the rotation of the gear 3022, thereby causing the lower pressure plate 3024 to tilt and press down on one side of the vibrating frame 203. Thus, during the process of the vibrating frame 203 vibrating to drive the filter material to be discharged, the filter material is discharged by the influence of gravity when tilted. At the same time, when the gear 3022 rotates, it will drive the rotating ring 3027 to rotate along the inner wall of the rotating groove 3028, ensuring the stability of the gear 3022 during rotation.

[0060] In summary, the gearbox 3022 is positioned on the speed detection mechanism 100 and activated to detect its rotational speed. During the rotational detection process, the gearbox 3022 will vibrate at a certain frequency, which is transmitted to the vibration detection mechanism 300. This mechanism can then detect the vibration frequency and determine whether it is within the normal range. After the vibration test, the lubricating oil drain port on the gearbox can be opened for drainage. The drained lubricating oil will then pass through the filter detection mechanism 200 for drainage and filtration, separating magnetic and non-magnetic substances. The type and amount of filtered material can be used to determine whether the gearbox 3022 is damaged or has insufficient sealing.

Claims

1. A fault detection device for the gearbox shaft transmission of a wind turbine generator set, characterized in that: include, A speed detection mechanism (100) includes a detection platform (101), a limit frame (102) is fixedly connected to the right side of the top of the detection platform (101), a clamping plate (103) is slidably connected to the left side of the top of the detection platform (101), a hydraulic rod (104) is fixedly connected to both the front and back of the detection platform (101), the piston end of the hydraulic rod (104) is fixedly connected to the bottom of the front and rear sides of the right side of the clamping plate (103), a motor (105) is fixedly connected to the left side of the clamping plate (103), and a detection handle (106) is fixedly connected to the right side of the clamping plate (103) through the output end of the motor (105). The filtration testing mechanism (200) includes an oil drain trough (201) which is located on the top of the testing platform (101). Vibration grooves (202) are provided on both sides of the inner wall of the oil drain trough (201). A vibration frame (203) is provided inside the oil drain trough (201). There are two vibration frames (203) which are fixed to each other. An electromagnetic screen (204) is fixedly connected inside the top vibration frame (203), and a non-magnetic screen (205) is fixedly connected inside the bottom vibration frame (203). The vibration detection mechanism (300) includes a force-bearing component (301) and an tilting component (302). The tilting component (302) includes a connecting seat (3021). Two connecting seats (3021) are provided. The left side of the connecting seat (3021) is fixedly connected to the front and rear sides of the bottom right side of the clamping plate (103). A gear (3022) is provided at the bottom of the connecting seat (3021). A screw (3023) is threadedly connected to the inside of the gear (3022). A lower pressure plate (3024) is movably connected to the bottom of the screw (3023). A moving groove (3025) is opened on the left side of the top of the inner wall of the vibration groove (202). A tooth (3026) is fixedly connected to the outer side of the inner wall of the moving groove (3025).

2. The wind turbine generator gearbox shaft transmission fault detection device according to claim 1, characterized in that: The force-bearing component (301) includes a movable groove (3011), which is opened on the front and rear sides of the top right side of the inner wall of the vibration groove (202). A force-bearing plate (3012) is slidably connected inside the movable groove (3011). The two sides of the bottom of the force-bearing plate (3012) are movably connected to the top vibration frame (203). A vibration detector (3013) is fixedly connected to the bottom of the force-bearing plate (3012).

3. The wind turbine generator gearbox shaft transmission fault detection device according to claim 2, characterized in that: The bottom of the vibration frame (203) is fixedly connected to the front and rear sides with springs (206), and there are several springs (206) distributed at equal distances.

4. The wind turbine generator gearbox shaft transmission fault detection device according to claim 3, characterized in that: Rubber sealing strips (207) are fixedly connected to the front and rear sides of the top of the vibration frame (203) and the front and rear sides of the bottom of the vibration frame (203). The other side of the rubber sealing strips (207) is fixedly connected to the inner wall of the vibration groove (202).

5. The wind turbine generator gearbox shaft transmission fault detection device according to claim 1, characterized in that: The teeth (3026) are provided in several groups, and each group is provided with several teeth that are evenly distributed. The top of the gear (3022) is fixedly connected to a rotating ring (3027), and the bottom of the connecting seat (3021) is provided with a rotating groove (3028).

6. The wind turbine generator gearbox shaft transmission fault detection device according to claim 5, characterized in that: The inner wall of the rotating groove (3028) is slidably connected to the surface of the rotating ring (3027) above. The top of the screw (3023) is fixedly connected to the limiting rod (3029). The surface of the limiting rod (3029) is movably fitted with a limiting sleeve (30210). The left side of the limiting sleeve (30210) is fixedly connected to the right side of the clamping plate (103).

7. A detection method for a wind turbine generator gearbox shaft transmission fault detection device, characterized in that: The wind turbine generator gearbox shaft transmission fault detection device according to any one of claims 1 to 6 further includes, The speed detection mechanism (100) detects the speed of the gearbox (3022); The vibration detection unit (300) is capable of detecting the vibration frequency of the gearbox; The filtration testing unit (200) performs filtration testing on the discharged lubricating oil.

8. The detection method of the wind turbine generator gearbox shaft transmission fault detection device according to claim 7, characterized in that: include, The gearbox (3022) is tested by the speed detection mechanism (100) to detect the speed of the gearbox (3022); During the rotation detection process, the vibration detection mechanism (300) can detect the vibration frequency, thereby detecting whether the vibration frequency of the current gearbox (3022) is within the normal range; After the vibration test is completed, the lubricating oil drain port on the gearbox can be opened to drain the lubricating oil. The drained lubricating oil will be discharged and filtered through the filter testing mechanism (200).

Images