A balancing and correcting auxiliary device for processing a fan impeller

Abstract

The utility model relates to fan impeller processing technical field discloses a kind of balance calibration auxiliary devices of fan impeller processing, including base track and inner groove, the inner groove is in the left side of base track inside, steering mechanism is arranged in base track, steering mechanism includes a group of third driving motor fixed in base track, the output shaft of third driving motor is fixedly connected with threaded rod, the outer thread of threaded rod is connected with sliding plate.This utility model is provided with steering mechanism, when third driving motor drives threaded rod to rotate, sliding plate is moved along wall groove, further push pull rod rotates 90 ° and rotates platform, make impeller seat and driving shaft automatic alignment, staff only need to hang into the impeller axle sleeve, the structure avoids manual operation of impeller in side face, reduces the risk that impeller and axle sleeve knock due to angle inconvenience, operation failure, suitable for the detection of large impeller.

Description

Technical Field

[0001] This utility model relates to the field of wind turbine impeller processing technology, specifically to a balance calibration auxiliary device for wind turbine impeller processing. Background Technology

[0002] Common balancing calibration devices for wind turbine impellers work by using a drive motor to rotate the impeller. A photoelectric sensor or accelerometer detects the amount of runout generated during rotation, determining whether the impeller is in dynamic balance and making corrections based on the test results. The core of these devices lies in achieving dynamic balance calibration of the impeller through precise speed control and sensor signal acquisition.

[0003] Existing balancing calibration devices mostly lack dedicated auxiliary positioning and docking mechanisms. When installing large-diameter or heavy wind turbine impellers, operators typically need to forcibly dock the drive shaft with the impeller's center hole from the side. Due to the impeller's large size and weight, it is highly susceptible to collisions during handling or installation, resulting in scratches or even deformation of the drive shaft, bushing, or impeller body, increasing subsequent calibration errors. Therefore, there is an urgent need for an auxiliary device for balancing calibration of wind turbine impellers to overcome these technical shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide a balancing calibration auxiliary device for wind turbine impeller processing, in order to solve the problem mentioned in the background art that operators usually need to forcibly connect the drive shaft to the impeller center hole from the side when installing large-diameter or heavy wind turbine impellers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a balancing calibration auxiliary device for wind turbine impeller processing, comprising a base track and an inner groove, wherein the inner groove is located on the left side of the base track, and a steering mechanism is provided within the base track. The steering mechanism includes a third drive motor fixed within the base track, a threaded rod fixedly connected to the output shaft of the third drive motor, a sliding plate screwed onto the outside of the threaded rod, a pull rod hinged to the top of the sliding plate, and the pull rod hinged to a rotating platform on the left side. The rotating platform is rotatably connected within the base track, and an impeller seat is fixedly connected to the top of the rotating platform. A bushing is fixedly mounted on the left side of the impeller seat.

[0006] As a further technical solution of this utility model, the rotating platform can rotate within the base track in a horizontal range of 0-360°.

[0007] As a further technical solution of this utility model, the threaded rod has parallel wall grooves at both ends, and the sliding plate is embedded in the wall grooves and moves.

[0008] As a further technical solution of this utility model, a moving mechanism is installed in the inner groove, including a second drive motor fixed to the bottom of the inner groove. A gear is fixedly sleeved on the output shaft of the second drive motor. A gear is meshed with a toothed rod at one end. A moving seat is fixedly connected to the left side of the toothed rod, and a protective frame is fixedly connected to the right side of the moving seat.

[0009] As a further technical solution of this utility model, the top of the protective frame is machined with a shaft groove, the top of the shaft groove is open, the diameter of the shaft groove is larger than that of the drive shaft and does not contact the drive shaft.

[0010] As a further technical solution of this utility model, a first drive motor is installed on the right side of the outer wall of the movable seat, and a photoelectric sensor fixed to the outer wall of the movable seat is provided on the right side of the first drive motor. A drive shaft is provided at the output end of the first drive motor, and the drive shaft extends through the photoelectric sensor to the left side of the bushing.

[0011] As a further technical solution of this utility model, a cross key is machined on the right side of the drive shaft, and the drive shaft and the bushing are matched in size.

[0012] As a further technical solution of this utility model, a PLC controller is provided on the left side of the base track.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a steering mechanism, when the third drive motor drives the threaded rod to rotate, the slide moves along the wall groove, further pushing the pull rod to pull the rotary table to rotate 90°, so that the impeller seat and the drive shaft are automatically aligned. The operator only needs to hang the impeller into the shaft sleeve. This structure avoids the manual operation of hanging the impeller on the side, and reduces the risk of the impeller and shaft sleeve colliding due to inconvenient angle or operation error. It is suitable for the inspection of large impellers. With a moving mechanism, when the second drive motor drives the gear to rotate, the rack pushes the moving seat and the protective frame to move as a whole, so that the drive shaft is accurately inserted into the bushing. The PLC controller, combined with photoelectric sensors, monitors the impeller's sway. After the detection is completed, the second drive motor controls the retraction. The whole process does not require manual insertion, which reduces operation error. Attached Figure Description

[0014] Figure 1 This is a frontal cross-sectional view of the present invention. Figure 2 This is a top view schematic diagram of the inner groove structure of this utility model; Figure 3 This is a top view of the rotating platform structure of this utility model; Figure 4 This is a side view of the protective frame structure of this utility model.

[0015] In the diagram: 1. Movable seat; 2. First drive motor; 3. Photoelectric sensor; 4. Drive shaft; 5. Bushing; 7. Impeller seat; 8. Rotary table; 9. Tie rod; 10. Slide plate; 11. Base track; 12. Inner groove; 13. Protective frame; 14. PLC controller; 15. Gear; 16. Second drive motor; 17. Gear rack; 18. Third drive motor; 19. Threaded rod; 20. Shaft groove. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-4 This utility model provides an embodiment of a balance calibration auxiliary device for wind turbine impeller processing, including a base track 11 and an inner groove 12. The inner groove 12 is located on the left side of the base track 11. A steering mechanism is provided inside the base track 11. The steering mechanism includes a set of third drive motors 18 fixed inside the base track 11. The third drive motors 18 are of the third drive motor type 18. A threaded rod 19 is fixedly connected to the output shaft of the third drive motor 18. A sliding plate 10 is screwed to the outside of the threaded rod 19. A pull rod 9 is hinged to the top of the sliding plate 10. The pull rod 9 is hinged to the left side of a rotating platform 8. The rotating platform 8 is rotatably connected to the base track 11. An impeller seat 7 is fixedly connected to the top of the rotating platform 8. A bushing 5 is fixedly assembled on the left side of the impeller seat 7. The rotating platform 8 can rotate within the base track 11 in a horizontal range of 0-360°. The two ends of the threaded rod 19 are provided with parallel wall grooves. The sliding plate 10 is embedded in the wall grooves and moves. Specifically, such as Figure 1 and Figure 3 As shown, the worker hangs the impeller to be processed onto the bushing 5. At this time, the third drive motor 18 starts, and its output shaft drives the threaded rod 19 to rotate. The thread is a standard trapezoidal thread, and its thread helix angle is less than the equivalent friction angle. This thread structure naturally has self-locking characteristics. Due to the transmission relationship of the threaded pair, the slide plate 10 achieves precise linear movement along the wall groove. As the slide plate 10 moves to the left, the pull rod 9 hinged at its top pulls the rotary table 8, causing the rotary table 8 to drive the impeller seat 7 to rotate 90° as a whole. When the threaded rod 19 stops rotating under control, the position of the rotary table 8 is locked, and at this time the bushing 5 and the drive shaft 4 are precisely aligned.

[0018] A moving mechanism is installed inside the inner groove 12, including a second drive motor 16 fixed to the bottom of the inner groove 12. The second drive motor 16 is model MHMD042G1U. A gear 15 is fixedly sleeved on the output shaft of the second drive motor 16. A gear 17 is meshed with one end of the gear 15. A moving seat 1 is fixedly connected to the left side of the gear 17. A first drive motor 2 is installed on the right side of the outer wall of the moving seat 1. The first drive motor 2 is model MHMD082G1U. A photoelectric sensor 3 is fixed to the outer wall of the moving seat 1 on the right side of the first drive motor 2. A drive shaft 4 is provided at the output end of the first drive motor 2. The drive shaft 4 extends through the photoelectric sensor 3 to the left side of the bushing 5. Specifically, such as Figure 1 and Figure 2 As shown, the second drive motor 16 is fixed at the bottom of the inner groove 12. The motor output end is connected to the gear 15, which meshes with the rack 17. When the second drive motor 16 starts, the gear 15 rotates, driving the rack 17 to move horizontally. The linear displacement of the rack 17 simultaneously drives the moving seat 1 and the protective frame 13 to move as a whole towards the impeller until the front end of the drive shaft 4 is accurately inserted into the bushing 5 to complete the docking. This process is precisely controlled by the PLC controller 14, avoiding the errors and dangers caused by manual docking. After docking is completed, the first drive motor 2 starts, driving the drive shaft 4 to rotate at high speed. The photoelectric sensor 3 begins to detect the amount of sway of the impeller during operation, thereby realizing real-time monitoring of the dynamic balance of the impeller. After the detection is completed, the second drive motor 16 rotates in reverse, causing the moving seat 1 and the protective frame 13 to return to their original positions, making it easy for the staff to quickly remove the impeller.

[0019] A protective frame 13 is fixedly connected to the right side of the movable base 1. A shaft groove 20 is machined at the top of the protective frame 13. The top of the shaft groove 20 is open. The diameter of the shaft groove 20 is larger than that of the drive shaft 4 and does not contact the drive shaft 4. A cross key is machined on the right side of the drive shaft 4. The drive shaft 4 and the bushing 5 are matched in size. A PLC controller 14 is set on the left side of the base track 11. Specifically, such as Figure 1 and Figure 4 As shown, the top of the protective frame 13 is machined with a shaft groove 20. The opening diameter of the shaft groove 20 is slightly larger than that of the drive shaft 4 and is precisely aligned with the axis of the drive shaft 4. When the impeller is rotated at high speed for balance calibration under the drive of the drive shaft 4, if the drive shaft 4 experiences slight swaying or shaking due to impeller imbalance, the shaft groove 20 can provide a limiting effect for the drive shaft 4, thereby preventing the drive shaft 4 from becoming unstable at high speed, making the impeller balance calibration process more stable and reliable.

[0020] Furthermore, the first drive motor 2, the second drive motor 16, and the third drive motor 18 are all electrically connected to the PLC controller 14. The electrical connection relationship and control method between them are existing technologies and will not be described in detail.

[0021] Furthermore, the photoelectric sensor 3 is a dedicated OMRON E3X-HD amplifier for the standard balance calibrator. Its working principle and control method are existing technologies, so they will not be described in detail.

[0022] Working principle: First, the operator hangs the fan impeller onto the bushing 5 of the impeller seat 7. The third drive motor 18 starts, and its output shaft drives the threaded rod 19 to rotate. The threaded rod 19 has a standard trapezoidal thread and a self-locking characteristic. The slide plate 10 moves linearly along the wall groove, driving the pull rod 9 to push the rotating table 8 to rotate, causing the rotating table 8 to drive the impeller seat 7 to rotate. When the rotating table 8 rotates to the 90° position, the third drive motor 18 stops, and the rotating table 8 is self-locked at this position, ensuring that the bushing 5 and the drive shaft 4 are aligned. Next, the second drive motor 16 starts, and its output shaft drives the gear 15 to rotate. The gear 15 meshes with the rack 17, pushing the rack 17 to move linearly. The rack 17, together with the moving seat 1 and the protective frame 13, moves forward until the drive shaft 4 is precisely inserted into the bushing 5 to complete the docking. This process is controlled by PL. The PLC controller 14 monitors the stroke in real time to avoid deviations and safety hazards caused by manual operation. Then, the first drive motor 2 starts, and the drive shaft 4 rotates at high speed under the detection of the photoelectric sensor 3, driving the impeller to run. The photoelectric sensor 3 detects the amount of sway during the impeller rotation in real time. The PLC controller 14 collects sensor data and makes judgments to complete the dynamic balance calibration of the fan impeller. After the calibration is completed, the second drive motor 16 rotates in reverse, driving the rack 17, the moving seat 1, and the protective frame 13 to return to their original positions as a whole. The drive shaft 4 exits from the bushing 5, making it easy for the staff to unload the impeller that has completed the balance calibration. The shaft groove 20 on the protective frame 13 provides a limit for the drive shaft 4 during the impeller rotation, reducing the shaking caused by high-speed sway and ensuring the stability and reliability of the entire calibration process.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A balancing calibration auxiliary device for wind turbine impeller machining, comprising a base track (11) and an inner groove (12), characterized in that: The left side of the base track (11) is an inner groove (12), and a steering mechanism is provided inside the base track (11); The steering mechanism includes a set of third drive motors (18) fixed in the base track (11). The output shaft of the third drive motor (18) is fixedly connected to a threaded rod (19). A slide plate (10) is screwed to the outside of the threaded rod (19). A pull rod (9) is hinged to the top of the slide plate (10). The pull rod (9) is hinged to the left side of the rotary table (8). The rotary table (8) is rotatably connected in the base track (11). An impeller seat (7) is fixedly connected to the top of the rotary table (8). A bushing (5) is fixedly assembled on the left side of the impeller seat (7).

2. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 1, characterized in that: The rotating platform (8) can rotate within the base track (11) in a horizontal range of 0-360°.

3. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 1, characterized in that: The threaded rod (19) has parallel wall grooves at both ends, and the sliding plate (10) is embedded in the wall grooves and moves.

4. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 1, characterized in that: The inner groove (12) is equipped with a moving mechanism, including a second drive motor (16) fixed to the bottom of the inner groove (12). The output shaft of the second drive motor (16) is fixedly sleeved with a gear (15). One end of the gear (15) is meshed with a rack (17). A moving seat (1) is fixedly connected to the left side of the rack (17), and a protective frame (13) is fixedly connected to the right side of the moving seat (1).

5. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 4, characterized in that: The top of the protective frame (13) is machined with a shaft groove (20), the top of the shaft groove (20) is open, the diameter of the shaft groove (20) is larger than that of the drive shaft (4) and it does not contact the drive shaft (4).

6. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 4, characterized in that: A first drive motor (2) is installed on the right side of the outer wall of the movable seat (1). A photoelectric sensor (3) is fixed to the outer wall of the movable seat (1) on the right side of the first drive motor (2). A drive shaft (4) is provided at the output end of the first drive motor (2). The drive shaft (4) extends through the photoelectric sensor (3) to the left side of the bushing (5).

7. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 6, characterized in that: A cross key is machined on the right side of the drive shaft (4), and the dimensions of the drive shaft (4) and the bushing (5) are matched.

8. The balancing calibration auxiliary device for wind turbine impeller machining according to claim 1, characterized in that: A PLC controller (14) is installed on the left side of the base track (11).

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