A wind power blade rotation flexibility detection device

Abstract

The utility model discloses a kind of wind power blade rotation flexibility detection devices, it is related to wind power blade detection device technical field.The utility model includes detection frame, the right side of the detection frame is equipped with blade, further include adjusting part, the adjusting part is installed at the outside of blade, the adjusting part is used to change the gravity center position of blade by external force.The utility model passes through adjusting part, specifically in the blade detection process, rotatable knob is rotated to drive threaded rod, make extruded plate one and protective pad upwardly move not with blade contact, then start electric push rod, by the transmission of sliding block one, sliding block two, rack, gear and connecting rod, make two extruded plate two mutually far away, adjust counterweight block position, after moving to appropriate position reverse operation is fixed, so it can change the gravity center position of blade, simulate the stress condition of blade under different working conditions, more comprehensive evaluation blade rotation performance, make detection more close to actual operating state.

Description

Technical Field

[0001] This utility model belongs to the technical field of wind turbine blade testing devices, and in particular relates to a wind turbine blade rotation flexibility testing device. Background Technology

[0002] In the field of wind power generation, the rotational flexibility of wind turbine blades directly affects the power generation efficiency and stability of generators. For accurate testing, counterweights need to be installed on the blades during testing to simulate the real stress state of the blades under complex external forces such as gravity, airflow impact, and centrifugal force during operation, thereby accurately detecting rotational flexibility. However, some existing testing devices are difficult to flexibly adjust the position of the counterweights. The operating conditions of blades vary under different centers of gravity, so the position of the counterweights needs to be flexibly changed to simulate real operating conditions. If it is not flexibly adjusted, it will not only lead to deviations in test results and affect the performance evaluation of blades, but also reduce testing efficiency and increase costs during multi-condition testing, thus hindering the research and optimization of wind power generation technology. Utility Model Content

[0003] The purpose of this invention is to provide a wind turbine blade rotation flexibility testing device. This device includes an adjustment mechanism. Specifically, during blade testing, a knob can be rotated to rotate a threaded rod, causing the first pressing plate and the protective pad to move upwards and out of contact with the blade. Then, an electric push rod is activated, and through the transmission of slider one, slider two, rack, gear, and connecting rod, the two pressing plates move away from each other, adjusting the position of the counterweight. After moving to the appropriate position, the operation is reversed to fix it. This changes the blade's center of gravity, simulating the blade's stress under different operating conditions, providing a more comprehensive evaluation of the blade's rotation performance, and making the testing more closely resemble actual operating conditions. This solves the problem of existing testing devices having difficulty flexibly adjusting the counterweight position.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] This utility model is a wind turbine blade rotation flexibility testing device, including a testing frame, a blade mounted on the right side of the testing frame, and an adjustment part installed on the outside of the blade. The adjustment part is used to change the center of gravity position of the blade by external force.

[0006] The testing frame uses a high-strength steel structure as its main frame, which not only supports the blades but also tests their rotational flexibility.

[0007] Furthermore, the adjustment unit includes a drive housing, and a counterweight is mounted on the bottom of the drive housing; and

[0008] Drive assembly one, which is mounted on the top of the drive box, is used to provide power for the vertical compression of the blades;

[0009] A first extrusion assembly is mounted at the bottom of a drive assembly and is used to extrude blades in a vertical direction.

[0010] A transmission assembly, which is installed inside the drive housing, is used to provide power for the lateral compression of the blades;

[0011] A second extrusion assembly is used to extrude blades in the lateral direction;

[0012] Among them, the drive assembly, the first extrusion assembly, the transmission assembly and the second extrusion assembly cooperate with each other to perform dual extrusion adjustment on the blade from the vertical and horizontal directions, thereby installing the counterweight on the blade.

[0013] Furthermore, the drive assembly includes a support frame fixedly connected to the top of the drive box, a nut fixedly connected to the top of the support frame, a threaded rod passing through the top of the support frame, the threaded rod being rotatably connected to the support frame, the threaded rod passing through the nut and being threadedly connected to the inner wall of the nut, and a knob fixedly connected to the top of the threaded rod.

[0014] The knob is designed in a cross shape to facilitate operation.

[0015] Furthermore, the first extrusion assembly includes an extrusion plate one installed at the bottom end of the threaded rod, and a protective pad is installed at the bottom of the extrusion plate one;

[0016] The extrusion plate is connected to the threaded rod via a spherical universal joint.

[0017] Furthermore, the transmission assembly includes a fixed rod fixedly connected to the top wall inside the drive housing, a gear rotatably connected to the bottom end of the fixed rod, and two guide rods fixedly connected to the inner wall of the drive housing; and

[0018] A slider 1 is slidably connected to the outer wall of the two guide rods, and a slider 2 is slidably connected to the outer wall of the two guide rods. A rack is fixedly connected to the side of slider 1 and slider 2 that are close to each other. Both racks mesh with gears. An electric push rod is fixedly connected to the inner bottom wall of the drive box. The output shaft of the electric push rod is fixedly connected to slider 1.

[0019] The two racks are mirror-symmetrically arranged, and both slider one and slider two have slots.

[0020] Furthermore, the second extrusion assembly includes several grooves formed on the top of the drive box. The tops of both slider one and slider two are fixedly connected to two connecting rods. The tops of several connecting rods extend to the top of the drive box and are slidably connected to the corresponding grooves. Extrusion plates two are fixedly connected between the two tops of the several connecting rods respectively.

[0021] Both of the two extrusion plates have interwoven anti-slip textures on the side that is close to each other.

[0022] This utility model has the following beneficial effects:

[0023] 1. By setting up an adjustment section, specifically during the blade inspection process, a knob can be rotated to drive the threaded rod to rotate, causing the first extrusion plate and the protective pad to move upward and not contact the blade. Then, the electric push rod is activated, and through the transmission of slider one, slider two, rack, gear and connecting rod, the two extrusion plates two are moved away from each other. The position of the counterweight is adjusted, and after moving to the appropriate position, the operation is reversed to fix it. In this way, the center of gravity position of the blade can be changed, simulating the stress situation of the blade under different working conditions, and the rotation performance of the blade can be more comprehensively evaluated, making the inspection closer to the actual operating state.

[0024] 2. By setting the extrusion plate to be connected to the threaded rod via a ball joint, when the blade is vertically extruded and adjusted, since the blade surface is not completely flat, the ball joint allows the extrusion plate to flexibly adjust its angle to better fit the blade surface. Combined with the protective pad at the bottom of the extrusion plate, this ensures that a stable extrusion force is applied to the blade and avoids damage to the blade due to mismatch between the extrusion plate and the blade surface. This improves the device's adaptability to blades of different shapes and the safety of the blades during the testing process.

[0025] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of 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.

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the blade structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the support frame of this utility model;

[0030] Figure 4 This is a cross-sectional structural diagram of the drive box of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the fixing rod of this utility model.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 1. Detection frame; 11. Blade; 2. Adjustment unit; 21. Drive box; 211. Counterweight; 22. Drive assembly one; 221. Support frame; 222. Nut; 223. Threaded rod; 224. Knob; 23. First extrusion assembly; 231. Extrusion plate one; 232. Protective pad; 24. Transmission assembly; 241. Fixing rod; 242. Gear; 243. Guide rod; 244. Slider one; 245. Slider two; 246. Electric push rod; 247. Rack; 25. Second extrusion assembly; 251. Slide groove; 252. Connecting rod; 253. Extrusion plate two. Detailed Implementation

[0034] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0035] Please see Figure 1-5 As shown, this utility model is a wind turbine blade rotation flexibility testing device, including a testing frame 1, a blade 11 installed on the right side of the testing frame 1, and an adjustment part 2, which is installed on the outside of the blade 11 and is used to change the center of gravity position of the blade 11 by external force.

[0036] Among them, the testing frame 1 uses a high-strength steel structure as the main frame, which not only provides support for the blade 11, but also tests the rotational flexibility of the blade 11.

[0037] The adjustment unit 2 includes a drive housing 21, and a counterweight 211 is mounted on the bottom of the drive housing 21; and

[0038] Drive assembly 22 is mounted on the top of drive housing 21 and is used to provide power for the vertical compression of blade 11.

[0039] The first extrusion assembly 23 is installed at the bottom of the drive assembly 22 and is used to extrude the blade 11 in the vertical direction.

[0040] The transmission assembly 24 is installed inside the drive housing 21 and is used to provide power for the lateral compression of the blade 11.

[0041] The second extrusion assembly 25 is used to extrude the blade 11 in the lateral direction;

[0042] The counterweight 211 is connected to the drive box 21 by bolts.

[0043] The drive assembly 22 includes a support frame 221 fixedly connected to the top of the drive housing 21. A nut 222 is fixedly connected to the top of the support frame 221. A threaded rod 223 passes through the top of the support frame 221. The threaded rod 223 is rotatably connected to the support frame 221. The threaded rod 223 passes through the nut 222 and is threadedly connected to the inner wall of the nut 222. A knob 224 is fixedly connected to the top of the threaded rod 223.

[0044] Among them, the knob 224 is designed in a cross shape, which makes it easy for operators to operate.

[0045] The first extrusion assembly 23 includes an extrusion plate 231 installed at the bottom of the threaded rod 223, and a protective pad 232 is installed at the bottom of the extrusion plate 231.

[0046] Among them, the extrusion plate 231 is connected to the threaded rod 223 through a ball joint.

[0047] The transmission assembly 24 includes a fixed rod 241 fixedly connected to the top wall inside the drive housing 21, a gear 242 rotatably connected to the bottom end of the fixed rod 241, and two guide rods 243 fixedly connected to the inner wall of the drive housing 21; and

[0048] Slider 1 244 is slidably connected to the outer wall of the two guide rods 243, and slider 245 is slidably connected to the outer wall of the two guide rods 243. Slider 1 244 and slider 245 are fixedly connected to each other on the side that are close to each other. Both racks 247 mesh with gears 242. Electric push rod 246 is fixedly connected to the inner bottom wall of the drive box 21. The output shaft of electric push rod 246 is fixedly connected to slider 1 244.

[0049] Among them, gear 242 is connected to fixed rod 241 through bearing, the inner wall of bearing is fixed to fixed rod 241, and the outer wall of bearing is fixed to gear 242.

[0050] The second extrusion assembly 25 includes several grooves 251 formed on the top of the drive box 21. The tops of slider one 244 and slider two 245 are fixedly connected to two connecting rods 252. The tops of several connecting rods 252 extend to the top of the drive box 21 and are slidably connected to the corresponding grooves 251. Extrusion plates two 253 are fixedly connected between the two tops of several connecting rods 252 respectively.

[0051] Among them, several connecting rods 252 are adapted to the corresponding sliding grooves 251.

[0052] A specific application of this embodiment is as follows: The testing frame 1 consists of a basic support module, a drive control module, a detection sensor module, and a data processing module. When using the testing frame 1 to test the flexibility of the blade 11, the root of the blade 11 is first connected to the drive control module on the testing frame 1. At the same time, the basic support module provides stable support for the entire device with a high-strength steel structure to reduce the influence of external interference on the test. Then, the drive motor of the drive control module provides power to drive the blade 11 to rotate according to the preset working conditions and accurately control parameters such as speed and pitch angle. During the rotation of the blade, the detection sensor module collects data such as the torque, angle, and vibration of the blade in real time and transmits them to the data processing module. The data processing module uses professional algorithms and models to analyze and process the received data, compares the analysis results with preset standard parameters, and thus determines whether the rotational flexibility of the blade 11 meets the standard. Finally, a test report is generated to complete the comprehensive test of the rotational flexibility of the blade 11.

[0053] During the testing of blade 11 using this device, the position of counterweight 211 on blade 11 is adjusted by adjusting part 2 to change the center of gravity of blade 11, simulating the force on blade 11 under different working conditions, in order to more comprehensively evaluate the rotational performance of blade 11. When it is necessary to adjust the position of counterweight 211, first turn knob 224, so that knob 224 drives threaded rod 223 to rotate. When threaded rod 223 rotates, it is threadedly connected to nut 222, and nut 222 is fixed to the top of support frame 221. Therefore, when threaded rod 223 rotates, it is connected to nut 222. Nut 222 is fixed to the top of support frame 221. Under the principle of thread transmission, the threaded rod 223 moves up and down, thereby driving the extrusion plate 231 and the protective pad 232 to move. When the extrusion plate 231 drives the protective pad 232 to move upward, it does not contact the blade 11. Then, the electric push rod 246 is activated. The output shaft of the electric push rod 246 extends and drives the slider 244 to slide on the guide rod 243. When the slider 244 slides, it drives the gear 242 on the fixed rod 241 to rotate through the rack 247 connected to the slider 244. When the gear 242 rotates, it drives the slider 241 to rotate. The rack 247 connected to 45 moves, thereby driving the second slider 245 to move, causing the second slider 245 and the first slider 244 to move synchronously and move away from each other. When the second slider 245 and the first slider 244 move, they will drive the connecting rod 252 to move. The movement of the connecting rod 252 will then drive the second pressing plate 253 to move, thus causing the two pressing plates 253 to move away from each other, thereby adjusting the position of the counterweight 211. When the counterweight 211 moves to the appropriate position, the knob 224 is rotated in the opposite direction to move the threaded rod 223 downward, thereby... The threaded rod 223 drives the extrusion plate 231 and the protective pad 232 to move downwards and contact the blade 11, applying force to the blade 11 in the vertical direction. Then, the electric push rod 246 is activated again, causing the output shaft of the electric push rod 246 to retract. At this time, the slider 244 and the slider 245 will move closer to each other, and then the connecting rod 252 drives the two extrusion plates 253 to move closer to each other and gradually contact the blade 11, thereby applying force to the blade 11 in the horizontal direction, so that the counterweight 211 can be fixed on the blade 11 through the drive box 21.

[0054] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0055] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A wind turbine blade rotation flexibility testing device, comprising a testing frame (1), wherein a blade (11) is mounted on the right side of the testing frame (1), characterized in that, Also includes: Adjustment part (2), the adjustment part (2) is installed on the outside of the blade (11), the adjustment part (2) is used to change the center of gravity position of the blade (11) by external force; Among them, the testing frame (1) uses a high-strength steel structure as the main frame, which provides support for the blade (11) while also testing the rotational flexibility of the blade (11).

2. The wind turbine blade rotation flexibility detection device according to claim 1, characterized in that, The adjustment unit (2) includes a drive housing (21), and a counterweight (211) is mounted on the bottom of the drive housing (21); and Drive assembly 1 (22), which is mounted on top of drive housing (21), is used to provide power for the vertical compression of blade (11); The first extrusion assembly (23) is installed at the bottom of the drive assembly (22) and is used to extrude the blade (11) in the vertical direction. A transmission assembly (24) is installed inside the drive housing (21) and is used to provide power for the lateral compression of the blade (11). The second extrusion assembly (25) is used to extrude the blade (11) in the lateral direction. Among them, the drive assembly (22), the first extrusion assembly (23), the transmission assembly (24), and the second extrusion assembly (25) cooperate with each other to perform dual extrusion adjustment on the blade (11) from the vertical and horizontal directions, thereby installing the counterweight (211) on the blade (11).

3. The wind turbine blade rotation flexibility detection device according to claim 2, characterized in that, The drive assembly (22) includes a support frame (221) fixedly connected to the top of the drive box (21). A nut (222) is fixedly connected to the top of the support frame (221). A threaded rod (223) passes through the top of the support frame (221). The threaded rod (223) is rotatably connected to the support frame (221). The threaded rod (223) passes through the nut (222) and is threadedly connected to the inner wall of the nut (222). A knob (224) is fixedly connected to the top of the threaded rod (223). The knob (224) is designed in a cross shape to facilitate operation.

4. The wind turbine blade rotation flexibility detection device according to claim 3, characterized in that, The first extrusion assembly (23) includes an extrusion plate (231) installed at the bottom of the threaded rod (223), and a protective pad (232) is installed at the bottom of the extrusion plate (231). Among them, the extrusion plate (231) is connected to the threaded rod (223) through a ball joint.

5. The wind turbine blade rotation flexibility testing device according to claim 4, characterized in that, The transmission assembly (24) includes a fixed rod (241) fixedly connected to the top wall inside the drive housing (21), a gear (242) rotatably connected to the bottom end of the fixed rod (241), and two guide rods (243) fixedly connected to the inner wall of the drive housing (21); and The outer walls of the two guide rods (243) are slidably connected to slider one (244), and the outer walls of the two guide rods (243) are slidably connected to slider two (245). Slots (247) are fixedly connected to the sides of slider one (244) and slider two (245) that are close to each other. Both racks (247) mesh with gears (242). An electric push rod (246) is fixedly connected to the inner bottom wall of the drive box (21). The output shaft of the electric push rod (246) is fixedly connected to slider one (244). The two racks (247) are mirror-symmetrically arranged, and both slider one (244) and slider two (245) have slots, and both racks (247) can pass through the corresponding slots.

6. The wind turbine blade rotation flexibility detection device according to claim 5, characterized in that, The second extrusion assembly (25) includes several grooves (251) formed on the top of the drive box (21). The tops of the first slider (244) and the second slider (245) are fixedly connected to two connecting rods (252). The tops of several connecting rods (252) extend to the top of the drive box (21) and are slidably connected to the corresponding grooves (251). Extrusion plates (253) are fixedly connected between the two tops of the several connecting rods (252). Both of the two extrusion plates (253) have interwoven anti-slip textures on the side that is close to each other.

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