Axle sticking detection device for low-speed shaft of wind power plant fan gearbox

Abstract

The invention discloses a wind power plant fan gearbox low-speed shaft journal sticking detection device, and particularly relates to the technical field of journal sticking detection. The device comprises a sleeve disc, a support frame, an electric cylinder and a following detection assembly; the following detection assembly comprises a main laser distance sensor, a supporting column, a supporting block, an arc-shaped block, a main infrared temperature sensor, a positioning distance sensor and an auxiliary laser distance sensor. The following detection assembly is adopted, the auxiliary laser distance sensor is used for sensing the vibration value of the outer wall of the other end of the low-speed shaft of the wind power plant fan gear box, movement detection can be achieved while the following detection assembly rotates along with the low-speed shaft of the wind power plant fan gear box, and shaft sticking detection is more accurate; therefore, the problems that the shaft body continuously performs transmission, different detection distance positions are difficult to know in a following manner in the transmission process, and the detection accuracy becomes poor during fixed point detection are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft seizure detection, and more particularly to a shaft seizure detection device for a low-speed shaft of a wind turbine gearbox in a wind farm. Background Art

[0002] Low-speed gearbox shaft seizure occurs when the inner and outer ring rolling elements of a bearing seize due to lubrication failure, overload, or concentrated thermal stress. It is one of the most serious mechanical failures in wind turbine gearboxes. Typical scenarios include: lubricant film rupture (excessive oil temperature or oil degradation leading to direct metal-to-metal contact); fretting wear accumulation (micro-sliding of the bearing under low-speed, heavy-load conditions causes surface spalling); high vibration forces and high temperatures.

[0003] Patent publication number CN115656660A discloses a shaft seizure detection method, device, system, and mixing station. This technology determines if the motor's current continues to deviate from its intended direction and reaches a predetermined level, indicating that the corresponding mixing shaft has seized. This method allows operators to directly determine if the seizure has occurred by determining whether the current's intended direction has reached a critical value, making it more convenient and timely to determine if the mixing unit is seizing. However, this technology also has the following drawbacks.

[0004] During the low-speed shaft seizure detection process of wind turbine gearboxes in wind farms, the shaft will continuously transmit. During the transmission process, it is difficult to follow the different detection distance positions. When performing fixed-point detection, the detection accuracy will deteriorate. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: a low-speed shaft seizure detection device for a wind turbine gearbox in a wind farm, comprising a sleeve, a support frame and an electric cylinder, wherein the support frame is fixed to the inner wall of the sleeve, the electric cylinder is fixed to the inner wall of the support frame, and a follow-up detection component is provided at the output end of the electric cylinder; the follow-up detection component comprises a main laser distance sensor fixedly arranged at the output end of the electric cylinder, and a pillar is fixedly connected to the outer wall of the main laser distance sensor, a support block is fixedly installed at one end of the pillar, and an arc block is fixedly connected to one side of the support block, a main infrared temperature sensor is fixedly installed at the bottom end of the arc block, a positioning distance sensor is fixedly installed on the upper surface of the main laser distance sensor, and a secondary laser distance sensor is installed on one side of the main laser distance sensor.

[0006] Preferably, the primary laser distance sensor and support pillar are both slidably connected to the support frame, with the support pillar having a circular vertical cross-section and a smooth outer wall. The support block is slidably connected to the support frame, with the arc-shaped block having an arc-shaped vertical cross-section. A sensing support block is fixedly connected to the upper surface of the secondary laser distance sensor; a connecting block is fixedly mounted on one side of the secondary laser distance sensor, with a secondary infrared temperature sensor fixedly connected to one end of the connecting block; the upper surface of the sensing support block is co-level with the upper surface of the positioning distance sensor.

[0007] When this technology is in use, the support frame can rotate along with the low-speed shaft of the wind turbine gearbox. At the same time, the electric cylinder pushes the main laser distance sensor to the right, the pillar drives the support block to the right, and the arc block drives the main infrared temperature sensor to the right. The main laser distance sensor senses the vibration fluctuation value of the low-speed shaft of the wind turbine gearbox. At the same time, the main infrared temperature sensor can sense the temperature of the outer wall of the low-speed shaft of the wind turbine gearbox. The auxiliary laser distance sensor senses the vibration value of the outer wall of the other end of the low-speed shaft of the wind turbine gearbox. The auxiliary infrared temperature sensor senses the temperature of the outer wall of the other end of the low-speed shaft of the wind turbine gearbox. It can move and detect vibration fluctuation values and temperature values at different positions while following the rotation of the low-speed shaft of the wind turbine gearbox. During the transmission process, the shaft seizure detection value at different detection distance positions can be followed and known.

[0008] Preferably, a sleeve block is fixedly connected to the outer wall of the support frame near the location of the secondary laser distance sensor; the upper surface of the sleeve block is provided with a tilting follower assembly; the tilting follower assembly includes a push cylinder fixedly mounted on the upper surface of the sleeve block, the output end of the push cylinder is fixedly connected to a push shaft, the bottom end of the push shaft is fixedly connected to a tilting slot block, and the inner wall of the tilting slot block is fixedly mounted with a magnetic block. The push shaft is slidably connected to the sleeve block, and the outer wall of the push shaft is a smooth surface. The vertical cross-section of the tilting slot block is trapezoidal, and the lower surface of the tilting slot block is configured as an inclined surface.

[0009] When this technology is in use, the electric cylinder pushes the push shaft downward, the push shaft drives the inclined slot block downward, the magnetic block contacts the outer wall of the low-speed shaft of the wind farm wind turbine gear box and is magnetically fixed, the low-speed shaft of the wind farm wind turbine gear box drives the magnetic block to rotate the inclined slot block, the sleeve block drives the electric cylinder to rotate, and the support frame drives the sleeve disc to rotate.

[0010] Preferably, the outer wall of the sleeve disc is provided with a rotation linkage assembly; the rotation linkage assembly comprises a slide ring fixedly mounted on the outer wall of the sleeve disc, the outer wall of the slide ring being slidably connected to a concave slider, the lower surface of the concave slider being fixedly connected to a support bar, the bottom end of the support bar being fixedly mounted to a base, the outer wall of the slide ring and located below the concave slider being meshed and transmission-connected to a friction roller; the inner wall of the friction roller being fixedly connected to a transmission rod, one end of which is mounted a transmission motor, the transmission motor being fixedly connected to the base, a controller being fixedly mounted on one side of the base, a positioning electric cylinder being fixedly connected to the middle portion of the inner wall of the base, the output end of the positioning electric cylinder being fixedly connected to a positioning friction plate, both sides of which are fixedly connected to a positioning sleeve, a tilting pressure rod being fixedly connected to the inner wall of the positioning sleeve, and a friction tip being fixedly connected to one side of the positioning sleeve. The transmission motor is used to drive the transmission rod to rotate, the inner wall of the slide ring is provided with an annular groove, the inner wall of the annular groove is slidably connected to a positioning post, and the positioning post is fixedly connected to the support bar. The lower surface of the base is provided with two mounting holes, and the cross-section shape of the two mounting holes is circular.

[0011] When this technology is in use, the sleeve drives the slide ring to rotate, and the slide ring rotates along the inside of the concave slider. The support bar supports the concave slider. The ring groove inside the slide ring slides along the outer wall of the positioning column. The support bar supports the positioning column. The positioning column can realize the positioning rotation of the ring groove to ensure that the slide ring rotates stably.

[0012] The technical effects and advantages of the present invention are as follows: The present invention adopts a follow-up detection component, and the support frame can rotate with the low-speed shaft of the wind farm wind turbine gearbox. During this process, the electric cylinder pushes the main laser distance sensor to the right, and drives the main infrared temperature sensor to move right synchronously through the support block and the arc block. The main laser distance sensor is used to sense the vibration fluctuation value of the low-speed shaft, and the auxiliary laser distance sensor senses the vibration value of the outer wall of the other end of the low-speed shaft, and the connecting block supported by it can realize mobile detection as the low-speed shaft rotates. This design makes the shaft seizure detection more accurate, and can comprehensively and dynamically obtain vibration data at different positions of the low-speed shaft, which helps to timely discover potential problems of the gearbox, ensure the stable operation of the wind farm wind turbine, and improve the accuracy and efficiency of equipment maintenance.

[0013] The present invention adopts an inclined follower component, and the electric cylinder, sleeve block, push shaft, inclined slot block and other structures cooperate with each other to achieve precise detection. The electric cylinder supports the sleeve block, and the sleeve block can push the electric cylinder, thereby pushing the push shaft downward, driving the inclined slot block downward, so that the magnetic block is magnetically fixed to the outer wall of the low-speed shaft of the wind turbine gearbox in the wind farm. The inclined slot block drives the push shaft to rotate the sleeve block, and the electric cylinder then drives the support frame and sleeve disc to rotate to achieve follow-up detection. This design allows the detection equipment to fit closely with the operating status of the low-speed shaft, obtain relevant data in real time and dynamically, effectively avoid errors caused by detection position deviation or inappropriate detection timing, greatly improve the accuracy of detection, and help to timely discover potential faults of the low-speed shaft.

[0014] The present invention adopts a rotating linkage component, the sleeve disc drives the slide ring to rotate, the slide ring rotates along the inside of the concave slider, the ring groove inside the slide ring slides along the outer wall of the positioning column, the positioning column can realize positioning rotation of the ring groove, and ensure that the slide ring rotates stably. After the detection is completed, the magnetic suction block is closed, the transmission motor drives the transmission rod to rotate, and the sleeve disc drives the support frame to rotate and return to the original position, so that the follow-up detection is convenient and stable, and the detection is more accurate.

[0015] After the detection is completed and the magnetic attraction block is closed, the present invention drives the transmission rod to rotate through the transmission motor, and then drives the friction roller to rotate, so that the sleeve disc drives the support frame to rotate and reset to its original position, and then starts the positioning electric cylinder to push the positioning friction plate upward, driving the two positioning sleeves to move up and extrude synchronously along the arc path, and at the same time drives the inclined pressure rod to move up synchronously, and also makes the top tip of the friction tip block squeeze the outer wall of the sleeve disc, and realizes the arc path precise positioning and locking of the outer wall of the sleeve disc through the positioning friction plate, the inclined pressure rod and the friction tip block, ensuring that the sleeve disc can be accurately and stably reset from the detached position to the specified position, thereby improving the accuracy and stability of the equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the overall structure of the low-speed shaft seizure detection device for a wind turbine gearbox in a wind farm according to the present invention.

[0017] Figure 2 This is a schematic diagram of the local structure of the connection between the main laser distance sensor and the pillar of the present invention.

[0018] Figure 3 This is a schematic diagram of the partial structure of the connection between the support frame and the sleeve block of the present invention.

[0019] Figure 4 It is a schematic diagram of the local structure of the connection between the connecting block and the auxiliary infrared temperature sensor of the present invention.

[0020] Figure 5 This is a schematic diagram of the partial structure of the main view of the connection between the pushing electric cylinder and the sleeve block of the present invention.

[0021] Figure 6It is a schematic diagram of the partial structure of the connection between the sleeve disc and the slide ring of the present invention.

[0022] Figure 7 This is a bottom view structural diagram of a low-speed shaft seizure detection device for a wind turbine gearbox in a wind farm according to the present invention.

[0023] Figure 8 For the present invention Figure 7 Enlarged structural diagram at point A in the middle.

[0024] Figure 9 This is a schematic diagram of the partial structure of the connection between the positioning electric cylinder and the base of the present invention.

[0025] Figure 10 It is a schematic diagram of the partial structure of the connection between the positioning friction plate and the positioning sleeve of the present invention.

[0026] The accompanying drawings are marked as follows: 1. sleeve; 2. support frame; 3. electric cylinder; 4. main laser distance sensor; 5. pillar; 6. support block; 7. arc block; 8. main infrared temperature sensor; 9. positioning distance sensor; 10. auxiliary laser distance sensor; 11. induction support block; 12. connecting block; 13. auxiliary infrared temperature sensor; 14. sleeve block; 15. pushing electric cylinder; 16. pushing shaft; 17. tilting groove block; 18. magnetic block; 19. slide ring; 20. concave slider; 21. support bar; 22. base; 23. friction roller; 24. transmission motor; 25. controller; 26. ring groove; 27. positioning column; 28. mounting hole; 29. transmission rod; 30. positioning electric cylinder; 31. positioning friction plate; 32. positioning sleeve; 33. tilting pressure rod; 34. friction tip block. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] As attached Figure 1 - Attachment Figure 10 A wind farm wind turbine gearbox low-speed shaft seizure detection device is shown. The wind farm wind turbine gearbox low-speed shaft seizure detection device is provided with a following detection component, a tilt following component, and a rotation linkage component. The arrangement of each mechanism and component enables the auxiliary laser distance sensor 10 to sense the vibration value of the outer wall of the other end portion of the wind farm wind turbine gearbox low-speed shaft. At the same time, the auxiliary laser distance sensor 10 supports the connecting block 12, which can follow the rotation of the wind farm wind turbine gearbox low-speed shaft while realizing mobile detection, making the seizure detection more accurate. The specific structural arrangement of each component is as follows.

[0029] In this embodiment, as shown in the attached Figure 1 - Attachment Figure 3 As shown, the support frame 2 is fixed to the inner wall of the sleeve 1, and the electric cylinder 3 is fixed to the inner wall of the support frame 2. The output end of the electric cylinder 3 is equipped with a follow-up detection assembly. The follow-up detection assembly includes a main laser distance sensor 4 fixed to the output end of the electric cylinder 3. The outer wall of the main laser distance sensor 4 is fixedly connected to a support column 5. A support block 6 is fixedly mounted on one end of the support column 5, and an arc block 7 is fixedly connected to one side of the support column 6. The bottom end of the arc block 7 is fixedly mounted to the main infrared temperature sensor 8. A positioning distance sensor 9 is fixedly mounted on the upper surface of the main laser distance sensor 4, and a secondary laser distance sensor 10 is mounted on one side of the main laser distance sensor 4. The main laser distance sensor 4 and the support column 5 are both slidably connected to the support frame 2. The vertical cross-section of the support column 5 is circular, and the outer wall of the support column 5 is smooth. The support column 6 is slidably connected to the support frame 2, and the vertical cross-section of the arc block 7 is circular.

[0030] In this embodiment, as shown in the attached Figure 3 - Attachment Figure 4 As shown, a sensing support block 11 is fixedly connected to the upper surface of the secondary laser distance sensor 10; a connecting block 12 is fixedly mounted on one side of the secondary laser distance sensor 10, and a secondary infrared temperature sensor 13 is fixedly connected to one end of the connecting block 12. The upper surface of the sensing support block 11 is aligned with the upper surface of the positioning distance sensor 9, allowing the secondary laser distance sensor 10 to support the connecting block 12, which in turn supports the secondary infrared temperature sensor 13. The secondary infrared temperature sensor 13 senses the temperature of the outer wall of the other end of the low-speed shaft of the wind turbine gearbox. By sensing the distance of the sensing support block 11 with the positioning distance sensor 9, the sensor can be moved and detected to measure vibration fluctuations and temperature values at different locations while rotating along the low-speed shaft of the wind turbine gearbox.

[0031] In this embodiment, as shown in the attached Figure 5 As shown, a sleeve block 14 is fixedly connected to the outer wall of the support frame 2 near the secondary laser distance sensor 10. A tilt-following assembly is provided on the upper surface of the sleeve block 14. This assembly includes a push cylinder 15 fixedly mounted on the upper surface of the sleeve block 14. A push shaft 16 is fixedly connected to the output end of the push cylinder 15. A tilted slot block 17 is fixedly connected to the bottom end of the push shaft 16. A magnetic block 18 is fixedly mounted on the inner wall of the tilted slot block 17. The push shaft 16 is slidably connected to the sleeve block 14. The outer wall of the push shaft 16 is smooth. The tilted slot block 17 has a trapezoidal vertical cross-section, and its lower surface is an inclined surface.

[0032] In this embodiment, as shown in the attached Figure 6 - Attachment Figure 10As shown, the outer wall of the sleeve 1 is provided with a rotary linkage assembly; the rotary linkage assembly includes a slide ring 19 fixedly arranged on the outer wall of the sleeve 1, the outer wall of the slide ring 19 is slidably connected with a concave slider 20, and the lower surface of the concave slider 20 is fixedly connected with a support bar 21, the bottom end of the support bar 21 is fixedly installed with a base 22, and the outer wall of the slide ring 19 and located below the concave slider 20 are meshingly connected with a friction roller 23.

[0033] A transmission rod 29 is fixedly connected to the inner wall of the friction roller 23. A transmission motor 24 is mounted at one end of the transmission rod 29 and fixedly connected to the base 22. A controller 25 is fixedly mounted on one side of the base 22. A positioning electric cylinder 30 is fixedly connected to the middle of the inner wall of the base 22. A positioning friction plate 31 is fixedly connected to the output end of the positioning electric cylinder 30. Positioning sleeves 32 are fixedly connected to both sides of the positioning friction plate 31. A tilting pressure rod 33 is fixedly connected to the inner wall of the positioning sleeve 32, and a friction tip 34 is fixedly attached to one side of the positioning sleeve 32. The transmission motor 24 is used to drive the transmission rod 29 to rotate. An annular groove 26 is defined on the inner wall of the slide ring 19. A positioning post 27 is slidably connected to the inner wall of the annular groove 26 and fixedly connected to the support bar 21. Two mounting holes 28 are defined on the lower surface of the base 22. Both mounting holes 28 have a circular cross-section.

[0034] The working principle of the low-speed shaft seizure detection device for the wind turbine gearbox of the wind farm of the present invention is as follows: First, when the present invention performs tilt following, the base 22 can be fixedly installed inside the wind turbine gearbox of the wind farm by inserting bolts into the mounting holes 28 inside the base 22, thereby sleeve-mounting the sleeve 1 on the outside of the low-speed shaft of the wind turbine gearbox of the wind farm.

[0035] Secondly, when the present invention performs rotation linkage, the sleeve disc 1 supports the support frame 2, the support frame 2 supports the electric cylinder 3, the electric cylinder 3 supports the sleeve block 14, the sleeve block 14 supports the push electric cylinder 15, and the push electric cylinder 15 pushes the push shaft 16 to move downward, and the push shaft 16 moves downward along the inner wall of the sleeve block 14, and the push shaft 16 drives the inclined slot block 17 to move downward, and the inclined slot block 17 drives the magnetic block 18 to move downward, and the magnetic block 18 contacts the outer wall of the low-speed shaft of the wind farm wind turbine gear box and is magnetically fixed, so that the low-speed shaft of the wind farm wind turbine gear box drives the magnetic block 18 to rotate the inclined slot block 17, and the inclined slot block 17 drives the push shaft 16 to rotate the sleeve block 14, and the sleeve block 14 drives the electric cylinder 3 to rotate, and the electric cylinder 3 drives the support frame 2 to rotate, and the support frame 2 drives the sleeve disc 1 to rotate.

[0036] Then, during the follow-up detection of the present invention, the sleeve disc 1 drives the slide ring 19 to rotate, and the slide ring 19 rotates along the inside of the concave slider 20. At the same time, the base 22 supports the support bar 21, and the support bar 21 supports the concave slider 20. The annular groove 26 inside the slide ring 19 slides along the outer wall of the positioning column 27. At the same time, the support bar 21 supports the positioning column 27. The positioning column 27 can realize the positioning rotation of the annular groove 26 to ensure that the slide ring 19 rotates stably, so that the sleeve disc 1 follows the rotation.

[0037] In this way, the support frame 2 can rotate along with the low-speed shaft of the wind farm wind turbine gearbox, and at the same time, the main laser distance sensor 4 is pushed to the right through the electric cylinder 3. The main laser distance sensor 4 drives the pillar 5 to move right, and the pillar 5 drives the support block 6 to move right. The support block 6 causes the arc block 7 to move right, and the arc block 7 drives the main infrared temperature sensor 8 to move right. The vibration fluctuation value of the low-speed shaft of the wind farm wind turbine gearbox is sensed by the main laser distance sensor 4. At the same time, the main infrared temperature sensor 8 can sense the temperature of the outer wall of the low-speed shaft of the wind farm wind turbine gearbox. At the same time, the support frame 2 supports the auxiliary laser distance sensor 10.

[0038] The auxiliary laser distance sensor 10 senses the vibration value of the outer wall of the other end of the low-speed shaft of the wind turbine gearbox in the wind farm. At the same time, the auxiliary laser distance sensor 10 supports the connecting block 12, and the connecting block 12 supports the auxiliary infrared temperature sensor 13. The auxiliary infrared temperature sensor 13 senses the temperature of the outer wall of the other end of the low-speed shaft of the wind turbine gearbox in the wind farm. By positioning the distance sensor 9 to sense the distance of the sensing support block 11, it is possible to realize the mobile detection of the vibration fluctuation value and the temperature value at different positions while following the rotation of the low-speed shaft of the wind turbine gearbox in the wind farm. During the transmission process, the shaft seizure detection value at different detection distance positions can be followed to check whether the vibration fluctuation value and the temperature value are the same as the value set by the controller 25. If they are the same, the shaft seizure detection value of the low-speed shaft of the wind turbine gearbox in the wind farm is qualified. If they are different, it is unqualified.

[0039] Finally, when the present invention is disengaged and reset, the magnetic block 18 is closed after the detection is completed, and the transmission motor 24 drives the transmission rod 29 to rotate, and the transmission rod 29 drives the friction roller 23 to rotate, and the friction roller 23 drives the slide ring 19 to rotate the sleeve disc 1, and the sleeve disc 1 drives the support frame 2 to rotate and reset to its original position, and then the positioning friction plate 31 is started to move up by the positioning electric cylinder 30, and the positioning friction plate 31 pushes the two positioning sleeves 32 to move up and extrude synchronously along the arc path. At the same time, the positioning sleeve 32 drives the inclined pressure rod 33 to move up synchronously, and the positioning sleeve 32 also drives the top tip of the friction tip 34 to be squeezed on the outer wall position of the sleeve disc 1, so that the positioning friction plate 31, the inclined pressure rod 33 and the friction tip 34 can realize the precise positioning and locking of the circular arc path on the outer wall of the sleeve disc 1, so as to ensure that the sleeve disc 1 reaches the specified position when it is disengaged, and the sleeve disc 1 can accurately and stably realize the reset function.

[0040] The contents not described in detail in the specification belong to the existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the existing technology and are not described here.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A low-speed shaft seizure detection device for a wind turbine gearbox in a wind farm, comprising a sleeve (1), a support frame (2), and an electric cylinder (3), characterized in that: The support frame (2) is fixed to the inner wall of the sleeve disc (1), the electric cylinder (3) is fixed to the inner wall of the support frame (2), and the output end of the electric cylinder (3) is provided with a follow-up detection component; The following detection component comprises a main laser distance sensor (4) fixedly arranged at the output end of the electric cylinder (3), and the outer wall of the main laser distance sensor (4) is fixedly connected to a pillar (5), one end of the pillar (5) is fixedly mounted with a support block (6), and one side of the support block (6) is fixedly connected with an arc block (7), the bottom end of the arc block (7) is fixedly mounted with a main infrared temperature sensor (8), the upper surface of the main laser distance sensor (4) is fixedly mounted with a positioning distance sensor (9), and one side of the main laser distance sensor (4) is mounted with a secondary laser distance sensor (10).

2. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 1, characterized in that: The main laser distance sensor (4) and the pillar (5) are both slidably connected to the support frame (2), and the vertical cross-section of the pillar (5) is circular, and the outer wall of the pillar (5) is a smooth surface.

3. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 1, characterized in that: The support block (6) is slidably connected to the support frame (2), and the vertical cross-section of the arc block (7) is in the shape of an arc.

4. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 1, characterized in that: The upper surface of the auxiliary laser distance sensor (10) is fixedly connected to a sensing support block (11); A connecting block (12) is fixedly mounted on one side of the auxiliary laser distance sensor (10), and an auxiliary infrared temperature sensor (13) is fixedly connected to one end of the connecting block (12); The upper surface of the sensing support block (11) and the upper surface of the positioning distance sensor (9) are located at the same horizontal line.

5. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 1, characterized in that: A sleeve block (14) is fixedly connected to the outer wall of the support frame (2) near the position of the auxiliary laser distance sensor (10); The upper surface of the sleeve block (14) is provided with an inclined follower component; The tilt follower assembly comprises a push electric cylinder (15) fixedly arranged on the upper surface of the sleeve block (14); the output end of the push electric cylinder (15) is fixedly connected to a push shaft (16); the bottom end of the push shaft (16) is fixedly connected to a tilt slot block (17); and a magnetic block (18) is fixedly installed on the inner wall of the tilt slot block (17).

6. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 5, characterized in that: The push shaft (16) is slidably connected to the sleeve block (14), and the outer wall of the push shaft (16) is a smooth surface.

7. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 5, characterized in that: The vertical cross-section of the inclined slot block (17) is trapezoidal, and the lower surface of the inclined slot block (17) is configured as an inclined surface.

8. The low-speed shaft seizure detection device for a wind turbine gearbox in a wind farm according to claim 1, characterized in that: The outer wall of the sleeve (1) is provided with a rotation linkage assembly; The rotary linkage assembly comprises a chute ring (19) fixedly arranged on the outer wall of the sleeve (1); the outer wall of the chute ring (19) is slidably connected to a concave slider (20); the lower surface of the concave slider (20) is fixedly connected to a support bar (21); the bottom end of the support bar (21) is fixedly mounted with a base (22); the outer wall of the chute ring (19) is meshingly connected to a friction roller (23) located below the concave slider (20); The inner wall of the friction roller (23) is fixedly connected to a transmission rod (29), one end of the transmission rod (29) is mounted with a transmission motor (24), the transmission motor (24) is fixedly connected to the base (22), one side of the base (22) is fixedly mounted with a controller (25), the middle portion of the inner wall of the base (22) is fixedly connected to a positioning electric cylinder (30), the output end of the positioning electric cylinder (30) is fixedly connected to a positioning friction plate (31), and both sides of the positioning friction plate (31) are fixedly connected to positioning sleeves (32), the inner wall of the positioning sleeve (32) is fixedly connected to an inclined pressure rod (33), and one side of the positioning sleeve (32) is fixedly connected to a friction tip block (34).

9. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 8, characterized in that: The transmission motor (24) is used to drive the transmission rod (29) to rotate, and the inner wall of the slide ring (19) is provided with a ring groove (26); A positioning column (27) is slidably connected to the inner wall of the annular groove (26), and the positioning column (27) is fixedly connected to the support bar (21).

10. The wind farm wind turbine gearbox low-speed shaft seizure detection device according to claim 8, characterized in that: Two mounting holes (28) are provided on the lower surface of the base (22), and the cross-section of the two mounting holes (28) is circular.

Images