Wind turbine generator hub testing device based on proximity switch

Abstract

The utility model discloses a wind turbine generator hub testing device based on a proximity switch, and relates to the technical field of hub testing. Comprising a support, a driving assembly is arranged at the upper end of one side of the support, a connecting assembly is arranged on the other side of the support, the connecting assembly is connected with the driving assembly, a hub is arranged on the driving assembly, and a testing assembly is arranged at the lower end of one side of the support and used for testing the hub. According to the wind turbine generator hub testing device based on the proximity switch, the driving assembly is arranged on the support, the connecting disc is arranged at one end of the driving shaft on the driving assembly, the centering adjusting block is arranged at the other end of the driving shaft, and the centering adjusting block and the connecting disc are matched to center the hub, so that the driving shaft can drive the hub to rotate stably; and the connection assembly is arranged to support the other end of the driving shaft, so that the compressive strength of the driving shaft is improved.

Description

Technical Field

[0001] This utility model relates to the field of hub testing technology, specifically a hub testing device for wind turbines based on proximity switches. Background Technology

[0002] In SL1500 wind turbines, most slip rings are located inside the hub, which contains an encoder to measure the hub speed. Due to the large vibration of the hub during turbine operation, the measured hub speed may fluctuate, causing malfunctions and shutdowns that affect power generation and may also damage other components.

[0003] Slip rings are crucial components for communication and power transmission in the wind turbine nacelle control system and the pitch control system within the hub. Because slip rings have both rotating and stationary parts, and also transmit communication signals and power, they are prone to failure due to both known and unknown factors related to design, manufacturing processes, and installation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a wind turbine hub testing device based on a proximity switch, which solves the existing problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a wind turbine hub testing device based on a proximity switch, comprising a bracket, a drive component disposed on the upper end of one side of the bracket, a connecting component disposed on the other side of the bracket, the connecting component being connected to the drive component, a hub disposed on the drive component, and a testing component disposed on the lower end of one side of the bracket for testing the hub.

[0006] Preferably, two symmetrically distributed dovetail grooves are provided on the other side of the bracket, and an installation hole is provided between the two dovetail grooves.

[0007] Preferably, the drive assembly includes a drive motor fixed to the outer side of the upper end of one side of the bracket. The output end of the drive motor is fixed with a drive shaft. One end of the drive shaft passes through the bracket and is movably connected to it through a bearing. A connecting plate is fixed to the outer side of one end of the drive shaft. A magnetic sheet is magnetically connected to one side edge of the connecting plate. A centering adjustment block is sleeved on the outer side of the other end of the drive shaft. One end of the centering adjustment block is shaped like a frustum. An adjusting nut is fitted to the other end of the centering adjustment block. The adjusting nut is connected to the other end of the drive shaft through internal and external threads.

[0008] Preferably, the connecting assembly includes a connecting frame, with a movable sleeve movably connected to one side of the upper end of the connecting frame via a bearing. The movable sleeve is sleeved and connected to the other end of the drive shaft. Two symmetrically distributed dovetail sliders are fixed at the lower end of the connecting frame. The dovetail sliders are adapted to dovetail grooves. A fixing bolt is provided between the two dovetail sliders. The fixing bolt is connected through the connecting frame and is adapted to the mounting hole.

[0009] Preferably, the test assembly includes a movable plate disposed on the inner side of the lower end of one side of the support, a limiting slider fixed in the middle of the inner side of the movable plate, a limiting groove formed on the inner side of the lower end of one side of the support, the limiting slider being located in the limiting groove, and the bottom end of the limiting slider being connected to the inner bottom wall of the limiting groove by a first spring.

[0010] Preferably, a protruding plate is fixed to the lower outer side of the movable plate, a fixing clamp is fixed to the upper outer side of the movable plate, a movable clamp is provided below the fixing clamp, a proximity switch is provided between the fixing clamp and the movable clamp, the proximity switch corresponds to the magnetic sheet, the bottom middle of the movable clamp is connected to the protruding plate through a telescopic rod, and a second spring is provided on both sides of the telescopic rod.

[0011] Beneficial effects

[0012] This invention provides a wind turbine hub testing device based on a proximity switch. Compared with the prior art, it has the following advantages:

[0013] 1. This wind turbine hub testing device based on proximity switches has a drive assembly mounted on a bracket. One end of the drive shaft on the drive assembly has a connecting plate, and the other end of the drive shaft has a centering adjustment block. The centering adjustment block and the connecting plate work together to center the hub, enabling the drive shaft to drive the hub to rotate stably, thus improving the stability of the test. The connecting assembly is designed as a detachable structure, making it easy for the hub to connect to the drive shaft. The connecting assembly also supports the other end of the drive shaft, improving the compressive strength of the drive shaft.

[0014] 2. This wind turbine hub testing device based on proximity switches has a magnetic sheet on the connecting plate and a testing component on the bracket. The movable plate on the testing component can clamp and limit the proximity switch through the cooperation of the fixed clamp and the movable clamp. The proximity switch and the magnetic sheet on the connecting plate can test the speed of the hub. The purpose of this device is to verify whether the proximity switch can replace the slip ring to detect the speed of the wind turbine hub. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2This is a front view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the support and drive assembly structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection component structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the test component structure of this utility model.

[0020] In the diagram: bracket 1, dovetail slide 11, mounting hole 12, drive assembly 2, drive motor 21, drive shaft 22, connecting plate 23, magnetic sheet 24, centering adjustment block 25, adjusting nut 26, connecting assembly 3, connecting frame 31, movable sleeve 32, dovetail slider 33, fixing bolt 34, hub 4, test assembly 5, movable plate 51, limit slider 52, limit slide 53, first spring 54, protruding plate 55, fixing clamp 56, movable clamp 57, proximity switch 58, telescopic rod 59, second spring 510. Detailed Implementation

[0021] 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.

[0022] like Figure 1-5 As shown, this utility model provides two technical solutions:

[0023] First implementation: A wind turbine hub testing device based on a proximity switch includes a bracket 1, on the other side of the bracket 1 are two symmetrically distributed dovetail grooves 11, and a mounting hole 12 is provided between the two dovetail grooves 11.

[0024] A drive assembly 2 is provided on the upper end of one side of the bracket 1. A hub 4 is provided on the drive assembly 2. The drive assembly 2 includes a drive motor 21 fixed on the outer side of the upper end of one side of the bracket 1. The drive motor 21 is electrically connected to an external PLC controller. The PLC controller can be installed on the top of one side of the bracket 1 by bolts or can be set separately. A drive shaft 22 is fixed to the output end of the drive motor 21. One end of the drive shaft 22 passes through the bracket 1 and is movably connected by a bearing. A connecting plate 23 is fixed to the outer side of one end of the drive shaft 22. A magnetic sheet 24 is magnetically connected to one side edge of the connecting plate 23. A centering adjustment block 25 is sleeved on the outer side of the other end of the drive shaft 22. One end of the centering adjustment block 25 is set as a frustum. An adjusting nut 26 is attached to the other end of the centering adjustment block 25. The adjusting nut 26 is connected to the other end of the drive shaft 22 by internal and external threads. The centering adjustment block 25 can be moved by the adjusting nut 26. The inclined arc surface of the centering adjustment block 25 can set the hub 4 in the center when the hub 4 is installed, so that the drive shaft 22 can drive the hub 4 to rotate stably.

[0025] A connecting component 3 is provided on the other side of the bracket 1. The connecting component 3 is connected to the drive component 2. The connecting component 3 includes a connecting frame 31. A movable sleeve 32 is movably connected to the upper side of the connecting frame 31 through a bearing. The movable sleeve 32 is sleeved and connected to the other end of the drive shaft 22. The movable sleeve 32 supports the drive shaft 22 without hindering its rotation. Two symmetrically distributed dovetail sliders 33 are fixed at the lower end of the connecting frame 31. The dovetail sliders 33 are adapted to the dovetail groove 11, which improves the connection strength between the connecting frame 31 and the bracket 1. A fixing bolt 34 is provided between the two dovetail sliders 33. The fixing bolt 34 is connected through the connecting frame 31 and is adapted to the mounting hole 12. The fixing bolt 34 and the mounting hole 12 cooperate to fix the connecting frame 31 and the bracket 1.

[0026] The second embodiment differs from the first embodiment in that: a test component 5 is provided at the lower end of one side of the bracket 1 for testing the wheel hub 4. The test component 5 includes a movable plate 51 located on the inner side of the lower end of one side of the bracket 1. A limiting slider 52 is fixed in the middle of the inner side of the movable plate 51. A limiting groove 53 is formed on the inner side of the lower end of one side of the bracket 1. The limiting slider 52 is located in the limiting groove 53. The bottom end of the limiting slider 52 is connected to the inner bottom wall of the limiting groove 53 through a first spring 54. The movable plate 51 can move vertically on the bracket 1. The first spring 54 allows the movable plate 51 to automatically return to its original position after movement. A protruding plate 55 is fixed on the outer side of the lower end of the movable plate 51 to facilitate the movement of the movable plate 51. A fixing clamp 56 is fixed on the outer side of the upper end of the movable plate 51. A movable clamp 57 is provided below the fixed clamp 56. A proximity switch 58 is provided between the fixed clamp 56 and the movable clamp 57. The proximity switch 58 is connected to the PLC controller. The fixed clamp 56 and the movable clamp 57 work together to clamp and limit the proximity switch 58, and at the same time, make it easy to quickly replace the proximity switch 58 when it is damaged. It also allows the device to quickly replace different models of proximity switches 58. The proximity switch 58 corresponds to the magnetic sheet 24, so that the proximity switch 58 can detect the rotation speed of the hub 4. The bottom center of the movable clamp 57 is connected to the protrusion plate 55 through the telescopic rod 59. A second spring 510 is provided on both sides of the telescopic rod 59. The setting of the telescopic rod 59 ensures the linear movement of the movable clamp 57. The setting of the second spring 510 enables the movable clamp 57 to clamp and limit the proximity switch 58.

[0027] During installation, the device is first connected to the drive shaft 22 through the hub 4 until one side of the hub 4 is in contact with the connecting plate 23. Then, the centering adjustment block 25 is fitted onto the other end of the drive shaft 22, and the adjusting nut 26 is tightened to the other end of the drive shaft 22. The centering adjustment block 25 is then moved until it connects with the through hole on the other side of the hub 4. Simultaneously, the hub 4 is adjusted until the centering adjustment block 25 adjusts it to the centered position. At this point, the adjusting nut 26 is tightened until it contacts the centering adjustment block 25, limiting its position. This allows the centering adjustment block 25 to cooperate with the connecting plate 23 to limit the hub 4, ensuring that the centerline of the hub 4 coincides with the drive shaft 22. Then, the movable plate 51 is moved downwards via the convex plate 55. Then, move the movable clamp 57 downwards to place the proximity switch 58 between the movable clamp 57 and the fixed clamp 56. Then, release the movable clamp 57. Under the action of the second spring 510, the movable clamp 57 cooperates with the fixed clamp 56 to clamp and limit the proximity switch 58. Then, release the movable plate 51. The movable plate 51 resets under the action of the first spring 54. At this time, the proximity switch 58 corresponds to the magnetic piece 24 on the connecting plate 23. Start the drive motor 21. The drive motor 21 drives the drive shaft 22 to rotate. The drive shaft 22 drives the connecting plate 23 to rotate. The magnetic piece 24 on the connecting plate 23 cooperates with the proximity switch 58 to detect the rotation speed of the wheel hub 4. This device can verify whether the proximity switch 58 can replace the slip ring to detect the wheel hub 4 by replacing different models of proximity switches 58.

[0028] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind turbine hub testing device based on a proximity switch, characterized in that, The device includes a bracket, a drive assembly is provided on the upper end of one side of the bracket, a connecting assembly is provided on the other side of the bracket, the connecting assembly is connected to the drive assembly, a wheel hub is provided on the drive assembly, and a test assembly is provided on the lower end of one side of the bracket for testing the wheel hub.

2. The wind turbine hub testing device based on a proximity switch according to claim 1, characterized in that: Two symmetrically distributed dovetail grooves are provided on the other side of the bracket, and an installation hole is provided between the two dovetail grooves.

3. The wind turbine hub testing device based on a proximity switch according to claim 1, characterized in that: The drive assembly includes a drive motor fixed to the outer side of the upper end of one side of the bracket. The output end of the drive motor is fixed with a drive shaft. One end of the drive shaft passes through the bracket and is movably connected to it through a bearing. A connecting plate is fixed to the outer side of one end of the drive shaft. A magnetic sheet is magnetically connected to one side edge of the connecting plate. A centering adjustment block is sleeved on the outer side of the other end of the drive shaft. One end of the centering adjustment block is shaped like a frustum. An adjusting nut is fitted to the other end of the centering adjustment block. The adjusting nut is connected to the other end of the drive shaft through internal and external threads.

4. The wind turbine hub testing device based on a proximity switch according to claim 1, characterized in that: The connecting assembly includes a connecting frame. A movable sleeve is movably connected to one side of the upper end of the connecting frame via a bearing. The movable sleeve is sleeved and connected to the other end of the drive shaft. Two symmetrically distributed dovetail sliders are fixed at the lower end of the connecting frame. The dovetail sliders are adapted to dovetail grooves. A fixing bolt is provided between the two dovetail sliders. The fixing bolt is connected through the connecting frame and is adapted to the mounting hole.

5. The wind turbine hub testing device based on a proximity switch according to claim 1, characterized in that: The test assembly includes a movable plate disposed on the inner side of the lower end of one side of the support. A limiting slider is fixed in the middle of the inner side of the movable plate. A limiting groove is formed on the inner side of the lower end of one side of the support. The limiting slider is located in the limiting groove. The bottom end of the limiting slider is connected to the inner bottom wall of the limiting groove through a first spring.

6. A wind turbine hub testing device based on a proximity switch according to claim 5, characterized in that: A protruding plate is fixed to the lower outer side of the movable plate, and a fixing clamp is fixed to the upper outer side of the movable plate. A movable clamp is provided below the fixing clamp. A proximity switch is provided between the fixing clamp and the movable clamp. The proximity switch corresponds to the magnetic sheet. The bottom middle of the movable clamp is connected to the protruding plate through a telescopic rod. A second spring is provided on both sides of the telescopic rod.

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