Dynamic balance detection device suitable for fan manufacturing
Real-time detection of wind turbine rotor imbalance is achieved through a purely mechanical architecture, solving the problem of sensor failure and improving the stability and convenience of detection during wind turbine manufacturing.
Patent Information
- Application Number
- CN202511911925.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-02-17
AI Technical Summary
Existing dynamic balance testing devices for wind turbine manufacturing are prone to sensor failure in dusty and vibrating environments, and electronic indication delays prevent them from reflecting the dynamic imbalance of the rotor in real time.
It adopts a purely mechanical structure, and realizes mechanical indication of the magnitude and phase of the fan rotor imbalance through direct transmission of mechanical vibration and lever amplification. Combined with the worm gear and worm wheel to adjust the height of the clamping mechanism, it can adapt to the testing of different models of fans.
It enables real-time detection of fan rotor imbalance in dusty and vibrating environments, improving the environmental adaptability and stability of the detection, and enhancing the convenience and accuracy of the detection.
Smart Images
Figure CN121540345A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of dynamic balancing testing technology, specifically to a dynamic balancing testing device suitable for wind turbine manufacturing. Background Technology
[0002] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas. It is a type of driven fluid machinery. A fan balancing test device is used to test whether the blades of a manufactured fan are in a balanced state when rotating. A fan in a balanced state produces less noise.
[0003] In the process of developing the invention, the inventors discovered that at least the following problems remained unresolved in the existing technology: Traditional dynamic balancing detection devices for fan manufacturing rely on electronic sensors and displays; however, in the dusty and vibrating environment of fan manufacturing workshops, the sensors are prone to failure; and the electronic indicators suffer from delays, failing to reflect the rotor's dynamic imbalance state in real time. Therefore, a new technical solution needs to be designed to address these issues. Summary of the Invention
[0004] The purpose of this invention is to provide a dynamic balancing detection device suitable for wind turbine manufacturing, in order to solve the technical problems of current dynamic balancing detection devices for wind turbine manufacturing relying on electronic sensors and displays, where sensors are prone to failure in the dusty and vibrating environment of wind turbine manufacturing workshops; and electronic indications having delays and being unable to reflect the dynamic imbalance state of the rotor in real time.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a dynamic balancing testing device suitable for wind turbine manufacturing, comprising a testing platform, a track groove being provided in the middle of the testing platform, a bidirectional threaded screw being rotatably connected inside the track groove, and adjusting mechanisms being symmetrically installed at both ends of the bidirectional threaded screw for adjusting the distance from the motor shaft to the testing platform; The other end of the adjustment mechanism is equipped with a clamping mechanism for clamping and fixing the fan blades and the motor; A guide post is fixedly installed on one side of the track groove, and a detection mechanism is installed on the guide post to detect the balance of the fan. One end of the detection mechanism is equipped with a lever mechanism, and the other end of the lever mechanism is equipped with a display mechanism for displaying the balance of the fan.
[0006] In a preferred embodiment of the present invention, one end of the bidirectional threaded lead screw movably passes through the interior of the testing platform and is fixedly connected to one end of the knob.
[0007] In a preferred embodiment of the present invention, the adjusting mechanism includes a sleeve plate, one end of which is slidably connected to the inner wall of the track groove and connected to the bidirectional threaded screw via threads, and an extension plate is slidably connected to the interior of the other end of the sleeve plate.
[0008] In a preferred embodiment of the present invention, a through groove is provided on one side of the sleeve plate, and a worm gear is installed inside the through groove. One side of the worm gear meshes with the toothed section of the worm, and the other end of the worm gear meshes with the toothed groove of the extension plate.
[0009] In a preferred embodiment of the present invention, the clamping mechanism includes a carrier plate, one end of which is fixedly connected to the other end of the extension plate, and fixed rods are fixedly connected to both sides of the carrier plate. A movable plate is sleeved on the outside of the fixed rods, and a first return spring is installed between the movable plate and the fixed rods. One end of the first return spring abuts against the upper surface of the movable plate, and the other end of the first return spring abuts against the other end of the fixed rods.
[0010] In a preferred embodiment of the present invention, the detection mechanism includes a detection plate, the upper surface of which contacts the fan shaft, and a telescopic plate is fixedly connected to the bottom of the detection plate. The telescopic plate is fixedly connected to the inside of a connecting plate by a limiting bolt. The connecting plate is movably connected to the outer surface of a guide post. A second return spring is sleeved on the outside of the guide post. One end of the second return spring abuts against the upper surface of the detection platform, and the other end of the second return spring abuts against the bottom of the connecting plate.
[0011] In a preferred embodiment of the present invention, the lever mechanism includes a support plate, one end of which is fixedly connected to the upper surface of the detection platform, and the other end of which is rotatably connected to a lever body, one end of which abuts against the other end of the connecting plate.
[0012] In a preferred embodiment of the present invention, the display mechanism includes an arc-shaped display panel, one end of which is fixedly connected to the upper surface of the detection platform, a guide groove is provided in the middle of the arc-shaped display panel, and a pointer is rotatably connected to one side of the arc-shaped display panel.
[0013] In a preferred embodiment of the present invention, the other end of the pointer moves through the interior of the arc-shaped display panel and is fixedly connected to one side of the gear. The toothed end of the gear meshes with the toothed end of the gear plate. The other end of the gear plate is fixedly connected to one end of the connecting post. The other end of the connecting post is fixedly connected to one side of the slider. The slider is slidably connected inside the connecting plate.
[0014] In a preferred embodiment of the present invention, the other end of the connecting plate is slidably connected to the inside of the guide groove and fixedly connected to the other end of the lever body.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: When the fan rotor experiences radial vibration due to imbalance, the detection plate transmits the vibration to the lever body via the telescopic plate and connecting plate. At this time, the second return spring is compressed or reset, causing the lever body to rotate on the support plate and move the connecting plate up and down. The connecting plate then moves the toothed plate up and down, which in turn drives the gear to rotate. The gear then drives the pointer to rotate on the arc-shaped display plate, thus displaying the amplitude of the radial vibration caused by the fan rotor imbalance. During this process, the toothed plate drives the slider to slide inside the connecting plate via the connecting shaft, thus intuitively reflecting the magnitude of the imbalance. This invention adopts a pure mechanical architecture of "direct mechanical vibration transmission + lever amplification," achieving for the first time a dual-parameter mechanical indication of the fan rotor imbalance, namely "magnitude-phase," significantly improving environmental adaptability. When the fan blades are relatively large, in order to prevent the fan blades from contacting the testing table, the worm gear is rotated first, so that the worm gear drives the worm wheel to rotate. Then, the worm wheel drives the tooth grooves inside the extension plate to move towards each other, thereby adjusting the height of the clamping mechanism on the testing table. This increases the range of the dynamic balancing testing device when testing the fan. The worm gear is used to prevent the worm wheel from rotating under the gravity of the fan, thus improving the stability of the dynamic balancing testing device when testing the fan. When performing dynamic balancing testing on a wind turbine, the distance between the two carrier plates is first adjusted according to the distance between the wind turbine's motor and blades. The operator then turns a knob, causing the knob to rotate a double-threaded screw inside the track groove. This causes the double-threaded screw to move the two adjustment mechanisms relative to or towards each other, thereby adjusting the distance between the two clamping mechanisms. This allows the device to be used for testing different types of wind turbines, increasing the convenience of the dynamic balancing testing device when testing wind turbines. Attached Figure Description
[0016] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a top view of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the toothed plate structure of the present invention; Figure 4 This is a schematic diagram of the pointer structure of the present invention; Figure 5 This is a schematic diagram of the connecting plate structure of the present invention; In the diagram: 1. Testing table; 11. Track groove; 12. Double-ended threaded screw; 13. Guide post; 14. Knob; 15. Sleeve plate; 16. Extension plate; 17. Through groove; 18. Worm gear; 19. Worm. 2. Gear groove; 21. Carrier plate; 22. Fixing rod; 23. Movable plate; 24. First return spring; 25. Gear plate; 26. Detection plate; 27. Telescopic plate; 28. Limit bolt; 29. Connecting plate; 3. Second return spring; 31. Support plate; 32. Lever body; 33. Arc-shaped display plate; 34. Guide groove; 35. Pointer; 36. Gear; 37. Connecting column; 38. Slider; 39. Connecting plate. Detailed Implementation
[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0018] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0019] Example 1: A dynamic balancing testing device suitable for wind turbine manufacturing, see [link to example]. Figures 1 to 5 The device includes a testing platform 1, with a track groove 11 in the middle. A bidirectional threaded screw 12 is rotatably connected inside the track groove 11. One end of the bidirectional threaded screw 12 moves through the interior of the testing platform 1 and is fixedly connected to one end of a knob 14. When the dynamic balancing test is performed, the distance between the two carrier plates 21 is first adjusted according to the distance between the fan motor and the fan blades. At this time, the operator rotates the knob 14, causing the knob 14 to drive the bidirectional threaded screw 12 to rotate inside the track groove 11. This causes the bidirectional threaded screw 12 to drive the two adjustment mechanisms to move relative to or towards each other, thereby adjusting the distance between the two clamping mechanisms. This allows the device to be used for testing different types of fans, increasing the convenience of the dynamic balancing test device when testing fans. A bidirectional threaded screw 12 has symmetrically installed adjustment mechanisms at both ends for adjusting the distance between the motor shaft and the testing table 1. Each adjustment mechanism includes a sleeve 15. One end of the sleeve 15 is slidably connected to the inner wall of the track groove 11 and is threadedly connected to the bidirectional threaded screw 12. An extension plate 16 is slidably connected inside the other end of the sleeve 15. A through groove 17 is provided on one side of the sleeve 15, and a worm gear 18 is installed inside the through groove 17. One side of the worm gear 18 meshes with the toothed section of the worm 19, and the other end of the worm gear 18 meshes with the extension plate 16. In the tooth groove 2, when the fan blade is relatively large, in order to prevent the fan blade from contacting the test table 1, the worm 19 is rotated first, so that the worm 19 drives the worm wheel 18 to rotate, and then the worm wheel 18 drives the tooth groove 2 in the extension plate 16 to move towards each other, thereby adjusting the height of the clamping mechanism to the test table 1, thereby increasing the range of the dynamic balance test device when testing the fan. The worm 19 is used to prevent the worm wheel 18 from rotating under the gravity of the fan, thus improving the stability of the dynamic balance test device when testing the fan. The other end of the adjusting mechanism is equipped with a clamping mechanism for clamping and fixing the fan blades and motor. The clamping mechanism includes a carrier plate 21, one end of which is fixedly connected to the other end of the extension plate 16. Fixing rods 22 are fixedly connected to both sides of the carrier plate 21. A movable plate 23 is sleeved around the fixing rods 22. A first return spring 24 is installed between the movable plate 23 and the fixing rods 22. One end of the first return spring 24 abuts against the upper surface of the movable plate 23, and the other end abuts against the other end of the fixing rods 22. When the fan is installed and fixed... First, install the motor end of the fan on a carrier plate 21, then loosen the movable plate 23. At this time, the first return spring 24 will generate a rebound force on the movable plate 23, so that the movable plate 23 clamps and fixes the motor end. Then, install the fan blade end on another carrier plate 21 (both the carrier plate 21 for installing the fan blade and the movable plate 23 are rotatably connected with multiple rollers so that the fan blade can rotate). Then loosen the movable plate 23. At this time, the first return spring 24 will generate a rebound force on the movable plate 23, so that the movable plate 23 clamps and fixes the fan blade. A guide post 13 is fixedly installed on one side of the track groove 11. A detection mechanism is installed on the guide post 13 to detect the balance of the fan. The detection mechanism includes a detection plate 26. The upper surface of the detection plate 26 contacts the fan shaft. A telescopic plate 27 is fixedly connected to the bottom of the detection plate 26. The telescopic plate 27 is fixedly connected to the inside of the connecting plate 29 by a limit bolt 28. When the adjustment mechanism adjusts the height, the limit bolt 28 is loosened, and then the telescopic plate 27 is allowed to extend and retract inside the connecting plate 29, so that the detection plate 26 re-contacts the fan shaft. Then the limit bolt 28 is tightened inside the connecting plate 29 to fix the telescopic plate 27. The connecting plate 29 is movably connected to the outer surface of the guide post 13. A second return spring 3 is sleeved on the outside of the guide post 13. One end of the second return spring 3 abuts against the upper surface of the detection table 1, and the other end of the second return spring 3 abuts against the bottom of the connecting plate 29. A lever mechanism is installed at one end of the detection mechanism, and a display mechanism is installed at the other end of the lever mechanism to display the balance of the fan. The lever mechanism includes a support plate 31. One end of the support plate 31 is fixedly connected to the upper surface of the detection table 1, and the other end of the support plate 31 is rotatably connected to... The system includes a lever body 32, one end of which rests against the other end of a connecting plate 29. The display mechanism includes an arc-shaped display plate 33, one end of which is fixedly connected to the upper surface of the detection table 1. A guide groove 34 is provided in the middle of the arc-shaped display plate 33. A pointer 35 is rotatably connected to one side of the arc-shaped display plate 33, and the other end of the pointer 35 moves through the interior of the arc-shaped display plate 33 and is fixedly connected to one side of a gear 36. The toothed end of the gear 36 meshes with the toothed end of a gear plate 25. The other end is fixedly connected to one end of the connecting column 37, and the other end of the connecting column 37 is fixedly connected to one side of the slider 38. The slider 38 is slidably connected inside the connecting plate 39, and the other end of the connecting plate 39 is slidably connected inside the guide groove 34 and fixedly connected to the other end of the lever body 32. When the fan rotor is unbalanced and generates radial vibration, the detection plate 26 will transmit the vibration to the lever body 32 through the telescopic plate 27 and the connecting plate 29. At this time, the second return spring 3 will be compressed or reset. The lever body 32 will rotate on the support plate 31 and drive the connecting plate 39 to move up and down. At this time, the connecting plate 39 will drive the toothed plate 25 to move up and down, and the toothed plate 25 will drive the gear 36 to rotate. Then, the gear 36 will drive the pointer 35 to rotate on the arc-shaped display plate 33, thereby displaying the amplitude of the radial vibration generated by the unbalanced fan rotor. During this process, the toothed plate 25 will drive the slider 38 to slide inside the connecting plate 39 through the connecting shaft, thereby intuitively reflecting the magnitude of the imbalance. The method adopts "direct transmission of mechanical vibration + The purely mechanical architecture of "lever amplification" has for the first time achieved dual-parameter mechanical indication of the "magnitude-phase" of the wind turbine rotor imbalance, significantly improving environmental adaptability.
[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. .
Claims
1. A dynamic balancing testing device suitable for wind turbine manufacturing, comprising a testing platform (1), characterized in that: The test bench (1) has a track groove (11) in the middle. A two-way threaded screw (12) is rotatably connected inside the track groove (11). Adjustment mechanisms are symmetrically installed at both ends of the two-way threaded screw (12) to adjust the distance from the motor shaft to the test bench (1). The other end of the adjustment mechanism is equipped with a clamping mechanism for clamping and fixing the fan blades and the motor; A guide column (13) is fixedly installed on one side of the track groove (11), and a detection mechanism is installed on the guide column (13) for detecting the balance of the fan. One end of the detection mechanism is equipped with a lever mechanism, and the other end of the lever mechanism is equipped with a display mechanism for displaying the balance of the fan.
2. The dynamic balancing testing device for wind turbine manufacturing according to claim 1, characterized in that: One end of the bidirectional threaded screw (12) moves through the interior of the testing table (1) and is fixedly connected to one end of the knob (14).
3. The dynamic balancing testing device for wind turbine manufacturing according to claim 1, characterized in that: The adjustment mechanism includes a sleeve (15), one end of which is slidably connected to the inner wall of the track groove (11) and is connected to the bidirectional threaded screw (12) by a thread. An extension plate (16) is slidably connected to the other end of the sleeve (15).
4. The dynamic balancing testing device for wind turbine manufacturing according to claim 3, characterized in that: A through groove (17) is provided on one side of the sleeve plate (15), and a worm wheel (18) is installed inside the through groove (17). One side of the worm wheel (18) is engaged with the toothed section of the worm (19), and the other end of the worm wheel (18) is engaged in the toothed groove (2) of the extension plate (16).
5. A dynamic balancing testing device suitable for wind turbine manufacturing according to claim 4, characterized in that: The clamping mechanism includes a carrier plate (21), one end of which is fixedly connected to the other end of the extension plate (16). Fixed rods (22) are fixedly connected to both sides of the carrier plate (21). A movable plate (23) is sleeved on the outside of the fixed rod (22). A first return spring (24) is installed between the movable plate (23) and the fixed rod (22). One end of the first return spring (24) abuts against the upper surface of the movable plate (23), and the other end of the first return spring (24) abuts against the other end of the fixed rod (22).
6. A dynamic balancing testing device suitable for wind turbine manufacturing according to claim 5, characterized in that: The detection mechanism includes a detection plate (26), the upper surface of which is in contact with the fan shaft, and a telescopic plate (27) is fixedly connected to the bottom of the detection plate (26). The telescopic plate (27) is fixedly connected to the inside of the connecting plate (29) by a limiting bolt (28). The connecting plate (29) is movably connected to the outer surface of the guide post (13). A second return spring (3) is sleeved on the outside of the guide post (13). One end of the second return spring (3) abuts against the upper surface of the detection table (1), and the other end of the second return spring (3) abuts against the bottom of the connecting plate (29).
7. A dynamic balancing testing device suitable for wind turbine manufacturing according to claim 6, characterized in that: The lever mechanism includes a support plate (31), one end of which is fixedly connected to the upper surface of the testing platform (1), and the other end of which is rotatably connected to a lever body (32), one end of which abuts against the other end of the connecting plate (29).
8. A dynamic balancing testing device suitable for wind turbine manufacturing according to claim 1, characterized in that: The display mechanism includes an arc-shaped display panel (33), one end of which is fixedly connected to the upper surface of the detection table (1). A guide groove (34) is provided in the middle of the arc-shaped display panel (33), and a pointer (35) is rotatably connected to one side of the arc-shaped display panel (33).
9. A dynamic balancing testing device suitable for wind turbine manufacturing according to claim 8, characterized in that: The other end of the pointer (35) moves through the interior of the arc-shaped display panel (33) and is fixedly connected to one side of the gear (36). The toothed end of the gear (36) meshes with the toothed end of the toothed plate (25). The other end of the toothed plate (25) is fixedly connected to one end of the connecting post (37). The other end of the connecting post (37) is fixedly connected to one side of the slider (38). The slider (38) is slidably connected inside the connecting plate (39).
10. A dynamic balancing testing device suitable for wind turbine manufacturing according to claim 9, characterized in that: The other end of the connecting plate (39) is slidably connected to the inside of the guide groove (34) and fixedly connected to the other end of the lever body (32).