Variable pitch bearing testing device for wind generating set

Abstract

The utility model discloses a variable pitch bearing testing device for a wind generating set, which relates to the technical field of variable pitch bearing testing and comprises a platform, a round hole is formed in the middle of the top of the platform, a mounting frame is fixedly mounted on one side in the round hole, a push cylinder is fixedly mounted on one side of the mounting frame, and a push rod is fixedly mounted on the other side of the push cylinder. The output end of the pushing air cylinder penetrates through the mounting frame and is fixedly provided with a motor, the output end of the motor is fixedly provided with a rotating shaft, and the outer surface of the rotating shaft is fixedly provided with a driving gear. A plurality of through grooves are circumferentially formed in the top of the platform at equal intervals. The variable pitch bearings with different diameters can be fixed through the through grooves, the outer rings of the variable pitch bearings and the platform can be fixed by using bolts to be matched with the through grooves, and therefore different mounting flanges do not need to be used. And the pushing air cylinder drives the motor to move, the movable motor can enable the driving gear to be meshed with inner ring teeth of the variable pitch bearings with different diameters, and high flexibility is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of variable pitch bearing testing, in particular to a variable pitch bearing testing device for a wind turbine generator set. Background Art

[0002] Wind turbines are an important part of the renewable energy sector, and pitch bearings are key components of wind turbines, and their performance directly affects the operating efficiency and stability of wind turbines. In order to ensure the safe and reliable operation of wind turbines, it is particularly important to conduct accurate and comprehensive testing of pitch bearings.

[0003] After searching, the patent with publication number CN101354313A discloses a test platform for variable pitch bearings in wind turbines, which includes a base, a hub, a counterweight arm and a counterweight block. The variable pitch bearing test platform is characterized in that the counterweight arm and the counterweight block are used to load the bearing, so as to check whether the clearance under the bearing loading condition meets the requirements and whether the bearing has defects. However, this technology has the problem that when the bearing sizes are different, the counterweight arm needs to use different mounting flanges during installation, thereby increasing the testing cost. Therefore, in order to solve the above problems, we propose a variable pitch bearing test device for wind turbines. Utility Model Content

[0004] The utility model aims to solve the defects in the prior art and proposes a variable pitch bearing testing device for a wind turbine generator set.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A variable pitch bearing test device for a wind turbine generator set, comprising a platform, a circular hole is opened in the middle of the top of the platform, a mounting frame is fixedly installed on one side of the circular hole, a push cylinder is fixedly installed on one side of the mounting frame, an output end of the push cylinder passes through the mounting frame and is fixedly installed with a motor, a rotating shaft is fixedly installed on the output end of the motor, and a driving gear is fixedly installed on the outer surface of the rotating shaft;

[0007] The top of the platform is provided with a plurality of through grooves equidistantly arranged on the circumference, the four ends of the top of the platform are fixedly installed with positioning components, the middle part of the front side of the top of the platform is fixedly installed with a detection component, the front of the platform is fixedly installed with a controller, and the detection component, four positioning components, a pushing cylinder and a motor are all electrically connected to the controller.

[0008] Furthermore, a slide groove is provided at the bottom of the inner side of the mounting frame, a slider is slidably installed inside the slide groove, and the bottom end of the rotating shaft is rotatably connected to the top end of the slider.

[0009] Furthermore, the detection component includes a support rod, the upper side of the support rod is an inclined structure, the upper side of the outer surface of the support rod is movably sleeved with a sliding sleeve, and the side of the sliding sleeve close to the platform is fixedly installed with an infrared temperature sensor and a reflective photoelectric speed sensor, and the infrared temperature sensor and the reflective photoelectric speed sensor are both electrically connected to the controller.

[0010] Furthermore, a positioning bolt is fixedly mounted on a side of the sliding sleeve away from the platform.

[0011] Furthermore, the positioning assembly includes a positioning cylinder, the positioning cylinder is fixedly mounted on the top of the platform, a positioning block is fixedly mounted on the output end of the positioning cylinder, and the positioning cylinder is electrically connected to the controller.

[0012] Furthermore, a vibration sensor is fixedly embedded on one side of the positioning block close to the round hole, and the vibration sensor is electrically connected to the controller.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The through slot of the utility model can fix the variable pitch bearings of different diameters. By using bolts to match the through slot, the outer ring of the variable pitch bearing can be fixed to the platform, so that different mounting flanges do not need to be used. The cylinder is pushed to drive the motor to move, and the movable motor can make the driving gear mesh with the inner ring teeth of the variable pitch bearings of different diameters, which has high flexibility.

[0015] The infrared temperature sensor and reflective photoelectric speed sensor of the utility model can detect the state of the variable pitch bearing during rotation, and can detect the temperature change of the variable pitch bearing at different speeds. The vibration sensor embedded on one side of the positioning block can detect the vibration condition of the variable pitch bearing during operation. The controller can collect and process the data measured by the vibration sensor, the infrared temperature sensor, and the reflective photoelectric speed sensor, and the staff can judge whether the variable pitch bearing is qualified based on the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3A three-dimensional diagram of the positioning assembly of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the detection component of the utility model.

[0021] In the figure: 1. platform; 2. detection component; 3. controller; 4. mounting frame; 5. pushing cylinder; 6. positioning component; 7. through slot; 8. positioning cylinder; 9. positioning block; 10. vibration sensor; 11. support rod; 12. sliding sleeve; 13. positioning bolt; 14. infrared temperature sensor; 15. reflective photoelectric speed sensor; 16. motor; 17. driving gear; 18. sliding slot. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention;

[0023] Reference Figure 1-4 A variable pitch bearing test device for a wind turbine generator set includes a platform 1, a circular hole is opened in the middle of the top of the platform 1, a mounting frame 4 is fixedly installed on one side of the circular hole, a push cylinder 5 is fixedly installed on one side of the mounting frame 4, the output end of the push cylinder 5 passes through the mounting frame 4 and is fixedly installed with a motor 16, a rotating shaft is fixedly installed at the output end of the motor 16, and a driving gear 17 is fixedly installed on the outer surface of the rotating shaft; a plurality of through grooves 7 are opened at equal intervals on the circumference of the top of the platform 1, and positioning components 6 are fixedly installed at the four ends of the top of the platform 1;

[0024] The pitch bearing can be placed on the top of the platform 1 during testing, and the outer ring of the pitch bearing can be fixed to the platform 1 by means of the through groove 7 and bolts. The pitch bearings of different diameters can be fixed by means of the set through groove 7, thereby eliminating the need to use different mounting flanges. Before fixing the pitch bearing, the positioning assembly 6 can be used to position the pitch bearing so that the pitch bearing is concentric with the circular hole, and the bolt hole of the outer ring of the pitch bearing can be aligned with the through groove 7.

[0025] A detection component 2 is fixedly installed in the middle of the top front side of the platform 1, and a controller 3 is fixedly installed on the front side of the platform 1. The detection component 2, four positioning components 6, the pushing cylinder 5, and the motor 16 are all electrically connected to the controller 3.

[0026] When the variable pitch bearing is fixed, the controller 3 can be used to start the push cylinder 5 to drive the motor 16 to move, so that the drive gear 17 is engaged with the inner ring teeth of the variable pitch bearing. After that, the motor 16 can be started to drive the variable pitch bearing to rotate through the drive gear 17. When the variable pitch bearing rotates, the working state of the variable pitch bearing can be detected by the detection component 2; the movable motor 16 can enable the drive gear 17 to engage with the inner ring teeth of the variable pitch bearings of different diameters.

[0027] A slide groove 18 is provided at the bottom of the inner side of the mounting frame 4, a slider is slidably installed inside the slide groove 18, and the bottom end of the rotating shaft is rotatably connected to the top end of the slider. The arrangement of the slide groove 18 and the slider can ensure the stability of the motor 16 when moving, so that the driving gear 17 can accurately mesh with the inner ring gear of the pitch bearing.

[0028] The detection assembly 2 includes a support rod 11, the upper side of the support rod 11 is an inclined structure, the upper side of the outer surface of the support rod 11 is movably sleeved with a sleeve 12, and an infrared temperature sensor 14 and a reflective photoelectric speed sensor 15 are fixedly installed on the side of the sleeve 12 close to the platform 1, and the infrared temperature sensor 14 and the reflective photoelectric speed sensor 15 are both electrically connected to the controller 3. A positioning bolt 13 is fixedly installed on the side of the sleeve 12 away from the platform 1.

[0029] The infrared temperature sensor 14 and the reflective photoelectric speed sensor 15 can detect the state of the variable pitch bearing during rotation, and can detect the temperature change of the variable pitch bearing at different speeds; the sleeve 12 can slide at the inclined part of the support rod 11, thereby changing the detection position of the infrared temperature sensor 14 and the reflective photoelectric speed sensor 15. The position of the sleeve 12 can be fixed by the positioning bolt 13, thereby fixing the detection position of the infrared temperature sensor 14 and the reflective photoelectric speed sensor 15.

[0030] The positioning assembly 6 includes a positioning cylinder 8, which is fixedly mounted on the top of the platform 1. A positioning block 9 is fixedly mounted on the output end of the positioning cylinder 8, and the positioning cylinder 8 is electrically connected to the controller 3. A vibration sensor 10 is fixedly embedded on one side of the positioning block 9 close to the circular hole, and the vibration sensor 10 is electrically connected to the controller 3;

[0031] The four positioning cylinders 8 can push the variable pitch bearing from all sides to make it concentric with the circular hole; when testing the variable pitch bearing, the positioning block 9 contacts the outer ring of the variable pitch bearing, and the vibration sensor 10 embedded on one side of the positioning block 9 can detect the vibration of the variable pitch bearing when it is working.

[0032] The controller 3 can collect and process the data measured by the vibration sensor 10, the infrared temperature sensor 14, and the reflective photoelectric rotation speed sensor 15, and the staff can judge whether the variable pitch bearing is qualified based on the data.

Claims

1. A variable pitch bearing testing device for a wind turbine generator set, comprising a platform (1), characterized in that: A circular hole is provided in the middle of the top of the platform (1), a mounting frame (4) is fixedly mounted on one side of the circular hole, a pushing cylinder (5) is fixedly mounted on one side of the mounting frame (4), an output end of the pushing cylinder (5) passes through the mounting frame (4) and is fixedly mounted with a motor (16), a rotating shaft is fixedly mounted on the output end of the motor (16), and a driving gear (17) is fixedly mounted on the outer surface of the rotating shaft; The top of the platform (1) is provided with a plurality of through grooves (7) equidistantly arranged on a circumference; the four ends of the top of the platform (1) are fixedly mounted with positioning components (6); a detection component (2) is fixedly mounted in the middle of the front side of the top of the platform (1); a controller (3) is fixedly mounted on the front of the platform (1); the detection component (2), the four positioning components (6), the pushing cylinder (5), and the motor (16) are all electrically connected to the controller (3).

2. A variable pitch bearing testing device for a wind turbine generator set according to claim 1, characterized in that: A slide groove (18) is provided at the bottom of the inner side of the mounting frame (4), a slider is slidably installed inside the slide groove (18), and the bottom end of the rotating shaft is rotatably connected to the top end of the slider.

3. A variable pitch bearing testing device for a wind turbine generator set according to claim 1, characterized in that: The detection assembly (2) comprises a support rod (11), the upper side of the support rod (11) is an inclined structure, the upper side of the outer surface of the support rod (11) is movably sleeved with a sliding sleeve (12), and an infrared temperature sensor (14) and a reflective photoelectric speed sensor (15) are fixedly installed on the side of the sliding sleeve (12) close to the platform (1), and the infrared temperature sensor (14) and the reflective photoelectric speed sensor (15) are both electrically connected to the controller (3).

4. A variable pitch bearing testing device for a wind turbine generator set according to claim 3, characterized in that: A positioning bolt (13) is fixedly mounted on the side of the sliding sleeve (12) away from the platform (1).

5. The variable pitch bearing testing device for a wind turbine generator set according to claim 1, characterized in that: The positioning assembly (6) comprises a positioning cylinder (8), the positioning cylinder (8) is fixedly mounted on the top of the platform (1), a positioning block (9) is fixedly mounted on the output end of the positioning cylinder (8), and the positioning cylinder (8) is electrically connected to the controller (3).

6. A variable pitch bearing testing device for a wind turbine generator set according to claim 5, characterized in that: A vibration sensor (10) is fixedly embedded on one side of the positioning block (9) close to the circular hole, and the vibration sensor (10) is electrically connected to the controller (3).

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