Performance testing device for main shaft bearing of wind turbine generator

Abstract

The utility model discloses a wind turbine generator main shaft bearing performance testing device, comprising a test bench, a fixing mechanism arranged above the test bench, and a detection mechanism arranged above the test bench, and through the fixing mechanism arranged on the test bench, a main shaft bearing is ensured to maintain a stable operation state in a test process. The vibration resistance and the stability of the whole fixing mechanism are enhanced, the influence of external vibration interference on a test result is effectively reduced, it is ensured that the spindle bearing does not displace or loosen in the test process, and flexible adjustment can be conducted according to the size and the shape of the spindle bearing; key performance parameters such as vibration, temperature and humidity, rotating speed and the like of the main shaft bearing in the testing process can be monitored in real time, the running state of the main shaft bearing is accurately captured, comprehensive and accurate data support is provided for performance evaluation, and appearance changes of the main shaft bearing in the testing process can be shot in real time.

Description

Technical Field

[0001] This utility model relates to the field of bearing testing technology, and more specifically, to a performance testing device for wind turbine main shaft bearings. Background Technology

[0002] The main shaft bearing of a wind turbine is a crucial component connecting the hub and the nacelle, and its performance directly affects the operating efficiency and safety of the wind turbine. To ensure the quality and reliability of the main shaft bearing, specially designed performance testing equipment is typically used for inspection.

[0003] However, the fixing components of the wind turbine main shaft bearing performance testing device are not stable enough. When testing the main shaft bearing, it is easy for it to be not fixed firmly, which may cause the main shaft bearing to shift or loosen during the test, affecting the accuracy of the test results. At the same time, the detection function of the wind turbine main shaft bearing performance testing device is not perfect, and it cannot comprehensively and accurately monitor the various performance parameters of the main shaft bearing in real time.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes a wind turbine main shaft bearing performance testing device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] A wind turbine main shaft bearing performance testing device includes a test bench, a fixing mechanism above the test bench, a fixing frame fixedly mounted above the test bench, a connecting shaft on the fixing frame, a four-jaw chuck at one end of the connecting shaft, a motor at the adjustment point of the four-jaw chuck, a fixing groove at one end of the jaws of the four-jaw chuck, a fixing plate on the inner wall of the fixing groove, fixing holes evenly distributed on the fixing plate, a fixing rod threaded to the inner wall of one of the fixing holes, and one end of the fixing rod threaded to the jaws of the four-jaw chuck.

[0008] Furthermore, in order to better detect the test data of the wind turbine main shaft bearing, a detection mechanism is set up above the test bench. The detection mechanism includes a mounting frame fixedly installed above the test bench, and a mounting cover is installed above the mounting frame. The mounting cover has multiple detection ports, three of which are equipped with vibration sensors, temperature and humidity sensors and laser speed measuring instruments on their inner walls, and a camera is installed on the inner wall of the other detection port.

[0009] Furthermore, in order to better improve the tightness between the mounting cover and the mounting bracket, mounting grooves are provided on both sides of the mounting cover and the mounting bracket. A rotating rod passes through the inner wall of the mounting groove of the mounting cover, and the rotating rod is threadedly connected to the mounting cover by a mounting rod.

[0010] Furthermore, to better restrict the mounting rod, a limiting plate is fixed to one end of the mounting rod, with one side of the limiting plate contacting the bottom of the mounting bracket.

[0011] Furthermore, in order to better drive the main shaft bearing and connecting shaft of the wind turbine, one end of the connecting shaft is connected to a second motor via a coupling. A bracket is installed on the second motor, and the lower part of the bracket is connected to the upper part of the fixed frame.

[0012] Furthermore, in order to better assist in heat dissipation of the second motor, a heat dissipation vent is provided on the side of the bracket, and a cooling fan is installed on the inner wall of the heat dissipation vent.

[0013] Furthermore, in order to better reduce surface damage during the fixing of the wind turbine main shaft bearing, anti-slip pads are provided at the jaws of the fixing plate and the four-jaw chuck, and the anti-slip pads are adapted to one side of the fixing plate and the jaws of the four-jaw chuck.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) By setting a fixing mechanism on the test bench, the spindle bearing is ensured to maintain a stable operating state during the test, which enhances the vibration resistance and stability of the entire fixing mechanism, effectively reduces the impact of external vibration interference on the test results, and enables precise drive adjustment of the four-jaw chuck to ensure that the spindle bearing will not be displaced or loosened during the test. It can be flexibly adjusted according to the size and shape of the spindle bearing, improving the reliability and stability of clamping. At the same time, the detection mechanism set on the test bench can monitor the key performance parameters such as vibration, temperature, humidity and speed of the spindle bearing in real time during the test, accurately capture the operating status of the spindle bearing, provide comprehensive and accurate data support for performance evaluation, meet the requirements of high-precision testing, and can capture the appearance changes of the spindle bearing in real time during the test, observe the surface condition, lubrication and abnormal wear of the spindle bearing, etc.

[0016] (2) By setting the rotating rod and mounting rod on the mounting cover and mounting frame, the connection stability between the mounting cover and mounting frame can be improved, ensuring the reliable operation of the testing mechanism during the testing process and reducing the monitoring error caused by loose installation. At the same time, the anti-slip pads set at the jaws of the fixed plate and the four-jaw chuck can increase the friction with the contact surface of the spindle bearing, further improving the fixing effect, reducing the risk of damage to the surface of the spindle bearing, and also enhancing the stability during the testing process. The cooling fan set on the bracket can dissipate the heat generated by the motor in time, preventing the motor from overheating and causing performance degradation or damage, extending the service life of the motor, and improving the reliability and operating efficiency of the testing device. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the main structure of a wind turbine main shaft bearing performance testing device according to an embodiment of the present utility model;

[0019] Figure 2 This is a side view of a wind turbine main shaft bearing performance testing device according to an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the fixing mechanism structure of a wind turbine main shaft bearing performance testing device according to an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the testing mechanism structure of a wind turbine main shaft bearing performance testing device according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of the support structure of a wind turbine main shaft bearing performance testing device according to an embodiment of the present utility model.

[0023] In the picture:

[0024] 1. Test bench; 2. Fixing mechanism; 201. Fixing frame; 202. Connecting shaft; 203. Four-jaw chuck; 204. Motor 1; 205. Fixing plate; 206. Fixing rod; 3. Detection mechanism; 301. Mounting frame; 302. Mounting cover; 303. Vibration sensor; 304. Temperature and humidity sensor; 305. Laser velocimeter; 306. Camera; 4. Rotating rod; 5. Mounting rod; 6. Limiting plate; 7. Motor 2; 8. Bracket; 9. Cooling fan; 10. Anti-slip mat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Example 1:

[0027] like Figures 1-5 As shown, a wind turbine main shaft bearing performance testing device according to an embodiment of the present utility model includes a test platform 1 for placing the wind turbine main shaft bearing for testing. A fixing mechanism 2 is provided above the test platform 1. The fixing mechanism 2 includes a fixing frame 201 fixedly installed above the test platform 1 for installing and supporting a connecting shaft 202. The fixing frame 201 is provided with a connecting shaft 202 for connecting a four-jaw chuck 203 and a second motor 7. One end of the connecting shaft 202 is connected to the second motor 7 through a coupling for driving the four-jaw chuck 203 and the wind turbine main shaft bearing. A bracket 8 is provided on the second motor 7 for installing and fixing the second motor 7. The lower part of the bracket 8 is connected to the upper part of the fixing frame 201. A heat dissipation vent is opened on the side of the bracket 8 for installing a cooling fan 9. A cooling fan 9 is installed on the inner wall of the heat dissipation vent for auxiliary heat dissipation treatment of the second motor 7.

[0028] A four-jaw chuck 203 is provided at one end of the connecting shaft 202. A motor 204 is provided at the adjustment point of the four-jaw chuck 203 for driving and adjusting the chuck 203. A fixing groove is provided at one end of the jaws of the four-jaw chuck 203 for adjusting the fixing plate 205. The inner wall of the fixing groove is provided with the fixing plate 205 for auxiliary fixing of the wind turbine main shaft bearing. The fixing plate 205 has evenly distributed fixing holes. A fixing rod 206 is threadedly connected to the inner wall of one of the fixing holes for fixing the fixing plate 205. The fixing rod 206... In actual use, it can be replaced with an electric telescopic rod (not shown in the figure). One end of the electric telescopic rod is connected to one side of the fixed plate 205, and the other end of the electric telescopic rod is connected to one side of the inner wall of the fixed groove. One end of the fixed rod 206 is threaded to the jaws of the four-jaw chuck 203. Anti-slip pads 10 are provided at the jaws of the fixed plate 205 and the four-jaw chuck 203 to improve the anti-slip performance of the fixed plate 205 and the jaws of the four-jaw chuck 203 when fixing the wind turbine main shaft bearing. The anti-slip pads 10 are adapted to one side of the fixed plate 205 and the jaws of the four-jaw chuck 203.

[0029] Example 2:

[0030] like Figures 1-5 As shown, a wind turbine main shaft bearing performance testing device according to an embodiment of the present invention includes a testing mechanism 3 above a test bench 1. The testing mechanism 3 includes a mounting frame 301 fixedly mounted above the test bench 1 for mounting the wind turbine main shaft bearing. A mounting cover 302 is provided above the mounting frame 301 for mounting the mounting frame 301. The mounting cover 302 has four testing ports for mounting testing components. Vibration sensors 303, temperature and humidity sensors 304, and laser velocimeters 305 are installed on the inner walls of three of the testing ports for detecting the vibration, temperature, humidity, and speed of the wind turbine main shaft bearing. The laser velocimeter 305 is detachable in actual use. A camera 306 is installed on the inner wall of the other testing port for capturing the changes in the wind turbine main shaft bearing over different time periods. The camera 306 is an industrial-grade camera with night vision capabilities.

[0031] Mounting covers 302 and mounting brackets 301 have mounting grooves on both sides to restrict mounting covers 302. A rotating rod 4 passes through the inner wall of the mounting groove of mounting cover 302 to adjust the rotation of mounting rod 5. The rotating rod 4 is threadedly connected to the mounting cover 302 to the mounting rod 5, which is used to adjust the limiting plate 6 to improve the tightness between mounting cover 302 and mounting brackets 301 and improve the stability of wind turbine main shaft bearing testing. A limiting plate 6 is fixed to one end of the mounting rod 5 to provide auxiliary restriction to mounting cover 302. One side of the limiting plate 6 contacts the bottom of mounting brackets 301.

[0032] Camera 306, vibration sensor 303, temperature and humidity sensor 304, laser velocimeter 305, cooling fan 9, motor 1 204, and motor 2 7 are electrically connected to a controller (not shown in the figure) in actual use. The controller is a PLC programmable logic controller or a microcontroller. By writing a suitable control program, the electrical components are precisely controlled. The controller, camera 306, vibration sensor 303, temperature and humidity sensor 304, laser velocimeter 305, cooling fan 9, motor 1 204, and motor 2 7 are electrically connected to an external power supply.

[0033] Camera 306, vibration sensor 303, temperature and humidity sensor 304, laser velocimeter 305, cooling fan 9, motor 1 204, motor 2 7, and controller are existing technologies and will not be described in detail. The specific model and specifications need to be selected and determined according to the actual specifications of the device.

[0034] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0035] In summary, with the help of the above-mentioned technical solution of this utility model, the tester places the spindle bearing to be tested into the mounting bracket 301, and then starts the motor 204 to drive the four jaws of the four-jaw chuck 203 to extend and retract synchronously, and adaptively adjusts the clamping distance according to the bearing size. At the same time, the anti-slip pads 10 set on the four jaws of the four-jaw chuck 203 contact the spindle bearing to be tested, so that the mounting part of the spindle bearing to be tested is fixed to the four jaws of the four-jaw chuck 203. Then, the fixing plate 205 is pulled out from the fixing groove at the four jaws of the four-jaw chuck 203, so that the anti-slip pads 10 set on the fixing plate 205 contact the spindle bearing to be tested. After adjustment, the fixing rod 206 is threadedly connected to the fixing holes at the four jaws of the fixing plate 205 and the four jaws of the four-jaw chuck 203 to form a mechanical locking structure to prevent the clamping from loosening.

[0036] Then, the staff connects the mounting cover 302 to the inner wall of the mounting slot of the mounting frame 301. After installation, the rotating rod 4 is adjusted and the mounting rod 5 is rotated so that the limiting plate 6 abuts against the bottom of the mounting frame 301, forming a three-point limiting structure to eliminate the displacement or vibration interference of the mounting cover 302 during the testing process. After fixing, the second motor 7 drives the four-jaw chuck 203 and the clamping bearing to rotate through the coupling and connecting shaft 202, simulating the actual operating conditions of the wind turbine. At the same time, the cooling fan 9 set in the bracket 8 assists in cooling the second motor 7, preventing the second motor 7 from degrading or being damaged due to overheating, and extending the service life of the second motor 7.

[0037] Simultaneously, the vibration sensor 303, temperature and humidity sensor 304, laser velocimeter 305, and camera 306 installed on the cover 302 can not only monitor the key performance parameters of the spindle bearing such as vibration, temperature, humidity, and speed in real time during the test, but also capture real-time images of the appearance changes of the spindle bearing during the test, observe the surface condition, lubrication status, and whether there is abnormal wear.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A performance testing device for the main shaft bearing of a wind turbine generator, characterized in that, The test platform (1) is provided with a fixing mechanism (2) above the test platform (1). The fixing mechanism (2) includes a fixing frame (201) fixedly installed above the test platform (1). A connecting shaft (202) is provided on the fixing frame (201). A four-jaw chuck (203) is provided at one end of the connecting shaft (202). A motor (204) is provided at the adjustment part of the four-jaw chuck (203). A fixing groove is provided at one end of the jaw of the four-jaw chuck (203). A fixing plate (205) is provided on the inner wall of the fixing groove. Fixing holes are provided at equal intervals on the fixing plate (205). A fixing rod (206) is threadedly connected to the inner wall of one of the fixing holes. One end of the fixing rod (206) is threadedly connected to the jaw of the four-jaw chuck (203).

2. The wind turbine main shaft bearing performance testing device according to claim 1, characterized in that, A detection mechanism (3) is provided above the test platform (1). The detection mechanism (3) includes a mounting bracket (301) fixedly installed above the test platform (1). A mounting cover (302) is provided above the mounting bracket (301). Multiple detection ports are provided on the mounting cover (302). Vibration sensors (303), temperature and humidity sensors (304), and laser velocimeters (305) are installed on the inner walls of three detection ports. A camera (306) is installed on the inner wall of the other detection port.

3. The wind turbine main shaft bearing performance testing device according to claim 2, characterized in that, Mounting slots are provided on both sides of the mounting cover (302) and the mounting bracket (301). A rotating rod (4) passes through the inner wall of the mounting slot of the mounting cover (302). The rotating rod (4) is threadedly connected to the mounting cover (302) with a mounting rod (5).

4. The wind turbine main shaft bearing performance testing device according to claim 3, characterized in that, One end of the mounting rod (5) is fixed with a limiting plate (6), and one side of the limiting plate (6) is in contact with the bottom of the mounting bracket (301).

5. The wind turbine main shaft bearing performance testing device according to claim 4, characterized in that, One end of the connecting shaft (202) is connected to the second motor (7) via a coupling. The second motor (7) is equipped with a bracket (8), and the lower part of the bracket (8) is connected to the upper part of the fixed frame (201).

6. The wind turbine main shaft bearing performance testing device according to claim 5, characterized in that, The side of the bracket (8) has a heat dissipation vent, and a cooling fan (9) is installed on the inner wall of the heat dissipation vent.

7. The wind turbine main shaft bearing performance testing device according to claim 6, characterized in that, Anti-slip pads (10) are provided at the jaws of the fixed plate (205) and the four-jaw chuck (203). The anti-slip pads (10) are adapted to one side of the fixed plate (205) and the jaws of the four-jaw chuck (203).

Images