A wind power blade torsional fatigue test device

Abstract

The utility model discloses a wind power blade torsional fatigue test device, include: upper fixed plate, lower fixed plate and wind power blade, the upper fixed plate with lower fixed plate number all are provided with two groups, wherein, for the same side's one group upper fixed plate and lower fixed plate inside all are provided with movable slot, movable slot one end fixedly connects with limit stop, the inboard fixedly connected with damping telescopic link of limit stop, the damping telescopic link outside sleeve has the spring, the utility model has the following beneficial effect: rely on the unique adjustable structure, can according to the wind power blade of different size quick adjustment. Through movable slot, damping telescopic link, spring and L shape movable rod etc. The parts cooperation operation, no matter how the blade width changes, can adjust upper fixed plate and lower fixed plate to the appropriate spacing in short time, steady clamping blade, widen the blade range that can test, provide the test basis for the research and development of novel, efficient wind power blade of wind power enterprise, promote wind power technology iteration.

Description

Technical Field

[0001] This utility model relates to the technical field of wind turbine blade testing equipment, specifically a wind turbine blade torsional fatigue testing device. Background Technology

[0002] Wind turbine blades are one of the key components of wind turbines. Their main function is to convert wind energy into mechanical energy, which is then converted into electrical energy by the generator. Wind turbine blades generally have large dimensions and special shapes. They are usually made of composite materials, such as glass fiber reinforced composite materials or carbon fiber reinforced composite materials. These materials can make the blades both lightweight and have sufficient strength and rigidity. The shape design of the blades is based on the principles of aerodynamics. Common examples include horizontal axis wind turbine blades, which are similar in shape to airplane wings. When the wind blows, a pressure difference is generated on the upper and lower surfaces of the blades, thereby generating lift and causing the blades to rotate.

[0003] Compared to the urgent need for refined and comprehensive testing of wind turbine blades of various sizes driven by the booming wind power industry, existing wind turbine blade torsional fatigue testing equipment is significantly lagging behind, particularly in terms of fixing devices. Current testing equipment on the market either has a single-size fixing fixture that can only accommodate a very limited number of standard blade sizes, leaving it helpless in the face of the increasingly diverse blade models; or although it has some adjustment functions, the adjustment range is narrow, and it still cannot effectively fix blades with large-span size variations. In stark contrast, an ideal testing device should be like a master key, allowing wind turbine blades of any specification to be quickly and securely installed in place using its ingeniously designed fixing devices, ensuring the smooth conduct of subsequent torsional fatigue testing. Utility Model Content

[0004] The purpose of this invention is to provide a torsional fatigue testing device for wind turbine blades to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a wind turbine blade torsional fatigue testing device, comprising: an upper fixed plate, a lower fixed plate, and a wind turbine blade. Two sets of both the upper and lower fixed plates are provided, with one set on the same side. Both the upper and lower fixed plates have movable grooves inside. A limit block is fixedly connected to one end of each movable groove. A damping telescopic rod is fixedly connected to the inner side of the limit block. A spring is sleeved on the outer side of the damping telescopic rod. A movable rod is fixedly connected to the other end of the damping telescopic rod. The other end of the movable rod is fixedly connected to one side of the upper and lower fixed plates on the other side. A guide block is fixedly connected to the side of the movable rod. A guide opening is provided on the side of the movable groove, and a guide groove is provided inside the movable groove.

[0006] Furthermore, a measuring tape is installed on the top of the upper fixing plate on one side and on the side of the upper fixing plate on the other side, and a magnetic block is fixedly attached to the top of the upper fixing plate on the other side and on the side of the lower fixing plate on the other side.

[0007] Furthermore, multiple sets of reinforcing plates are installed on both sides of the upper fixing plate and the lower fixing plate, and soft pads are installed on the inner side of both the upper fixing plate and the lower fixing plate.

[0008] Furthermore, both sets of lower fixing plates are fixedly connected to casters.

[0009] Furthermore, the movable rod is L-shaped, the damping telescopic rod is fixed to the inner side of the movable rod, the guide port is connected to the movable groove, and the guide port and the movable groove are adapted to the size of the movable rod, and the guide block is adapted to the guide groove.

[0010] Furthermore, the measuring tape and the magnetic blocks are each provided in two sets, and they are compatible with each other.

[0011] Furthermore, multiple sets of both the reinforcing plate and the soft pad are provided.

[0012] This invention offers the following advantages: Relying on its unique adjustable structure, it can be quickly adjusted to accommodate wind turbine blades of different sizes. Through the coordinated operation of components such as the movable slot, damping telescopic rod, spring, and L-shaped movable rod, regardless of changes in blade width, the upper and lower fixed plates can be adjusted to a suitable distance in a short time, firmly clamping the blade. This expands the range of testable blades, providing a testing foundation for wind power companies to develop new and efficient wind turbine blades, and promoting the iteration of wind power technology.

[0013] 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

[0014] 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.

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

[0016] Figure 2 This is a schematic diagram of the overall structure of the side of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall disassembled structure of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the upper fixing plate of this utility model.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] In the diagram: 1. Upper fixed plate; 2. Lower fixed plate; 3. Movable groove; 4. Limiting block; 5. Damping telescopic rod; 6. Spring; 7. Movable rod; 8. Guide block; 9. Guide opening; 10. Guide groove; 11. Measuring tape; 12. Magnetic block; 13. Reinforcing plate; 14. Soft pad; 15. Universal wheel; 16. Wind turbine blade. 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] Please see Figures 1-4As shown, this utility model is a torsional fatigue testing device for wind turbine blades, comprising: an upper fixed plate 1, a lower fixed plate 2, and a wind turbine blade 16. Two sets of both the upper fixed plate 1 and the lower fixed plate 2 are provided. Each set of upper and lower fixed plates 2 on the same side has a movable groove 3 inside. A limit block 4 is fixedly connected to one end of the movable groove 3, restricting the range of motion of the internal components and ensuring structural stability. A damping telescopic rod 5 is fixedly connected to the inner side of the limit block 4, and a spring 6 is sleeved on the outer side of the damping telescopic rod 5. A movable rod 7, L-shaped, is fixedly connected to the other end of the damping telescopic rod 5. The other end of the movable rod 7 is fixedly connected to one side of the upper fixed plate 1 and the lower fixed plate 2 on the other side. A guide block 8 is fixedly connected to the side of the movable rod 7. A guide opening 9 is opened on the side of the movable groove 3, connecting to the movable groove 3. The guide opening 9 and the movable groove 3 are connected to the movable rod 7. With matching dimensions, the movable groove 3 has a guide groove 10 on its inner side. The guide block 8 and the guide groove 10 are matched. The damping telescopic rod 5 and the sleeved spring 6 work together. When it is necessary to adjust the spacing between the fixed plates to match the width of the wind turbine blade, the L-shaped movable rod 7 connected to it on the other side is pulled outward. At this time, the damping telescopic rod 5 is stretched, and the spring 6 is deformed by force to store elastic potential energy. The guide block 8 fixed to the side of the movable rod 7 moves along the guide opening 9 on the side of the movable groove 3 and is matched with its size. At the same time, the guide block 8 slides in the guide groove 10 on the inner side of the movable groove 3. This ensures that the movable rod 7 moves smoothly and without deviation, so that the two sets of fixed plates can adjust the spacing accurately and smoothly until a suitable distance matching the width of the wind turbine blade is reached. After releasing the movable rod 7, the spring 6 releases elastic potential energy, pushes the damping telescopic rod 5 to retract, and drives the movable rod 7 back to its position, so that the fixed plate tightly clamps the wind turbine blade 16.

[0023] A measuring tape 11 is installed on the top of the upper fixing plate 1 on one side and on the side of the upper fixing plate 1 on the other side. A magnetic block 12 is fixed on the top of the upper fixing plate 1 on the other side and on the side of the lower fixing plate 2 on the other side. There are two sets of measuring tape 11 and magnetic blocks 12, which are compatible. When the measuring tape 11 is pulled out for measurement, the magnetic block 12 can attract the head of the measuring tape 11, which is convenient for single-person operation and reading, ensuring that the measurement process is efficient and accurate, and laying the foundation for the accurate collection of test data.

[0024] Multiple sets of reinforcing plates 13 are installed on both sides of the upper fixing plate 1 and the lower fixing plate 2. Soft pads 14 are installed on the inner side of both the upper fixing plate 1 and the lower fixing plate 2. Multiple sets of reinforcing plates 13 and soft pads 14 are provided. During the fixing process, the multiple sets of soft pads 14 on the inner side of the upper fixing plate 1 and the lower fixing plate 2 can not only prevent the hard surface of the fixing plate from scratching the wind turbine blades and play a buffering and protective role, but also increase the friction and further stabilize the clamping of the blades. The multiple sets of reinforcing plates 13 installed on both sides strengthen the overall rigidity of the fixing plate and ensure that the fixing plate can withstand strong forces without deformation during the torsional fatigue test, ensuring the safe and accurate conduct of the test.

[0025] Both sets of lower fixed plates 2 are fixed with casters 15. There are multiple sets of casters. By using the multiple sets of casters 15 at the bottom of the device, the entire test device can be easily moved to the designated working position. The casters 15 can turn flexibly to ensure that the device can be smoothly positioned in different site layouts, which provides convenience for subsequent operations.

[0026] 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 torsional fatigue testing device for wind turbine blades, comprising: The upper fixed plate (1), the lower fixed plate (2) and the wind turbine blade (16) are provided in two sets. The upper fixed plate (1) and the lower fixed plate (2) are provided in two sets. The upper fixed plate and the lower fixed plate (2) are on the same side. The upper fixed plate and the lower fixed plate (2) are provided with movable grooves (3). One end of the movable groove (3) is fixedly connected to a limit block (4). The inner side of the limit block (4) is fixedly connected to a damping telescopic rod (5). The outer side of the damping telescopic rod (5) is sleeved with a spring (6). The other end of the damping telescopic rod (5) is fixedly connected to a movable rod (7). The other end of the movable rod (7) is fixedly connected to one side of the upper fixed plate (1) and the lower fixed plate (2) on the other side. The side of the movable rod (7) is fixedly connected to a guide block (8). The side of the movable groove (3) is provided with a guide opening (9). The inner side of the movable groove (3) is provided with a guide groove (10).

2. The wind turbine blade torsional fatigue testing device according to claim 1, characterized in that: A measuring tape (11) is installed on the top of the upper fixing plate (1) on one side and on the side of the upper fixing plate (1) on the other side. A magnetic block (12) is fixed on the top of the upper fixing plate (1) on the other side and on the side of the lower fixing plate (2) on the other side.

3. The torsional fatigue testing device for wind turbine blades according to claim 1, characterized in that: Multiple sets of reinforcing plates (13) are installed on both sides of the upper fixing plate (1) and the lower fixing plate (2), and soft pads (14) are installed on the inner side of the upper fixing plate (1) and the lower fixing plate (2).

4. The torsional fatigue testing device for wind turbine blades according to claim 1, characterized in that: Both sets of lower fixing plates (2) are fixed with casters (15).

5. The torsional fatigue testing device for wind turbine blades according to claim 1, characterized in that: The movable rod (7) is L-shaped, the damping telescopic rod (5) is fixed to the inner side of the movable rod (7), the guide port (9) is connected to the movable groove (3), and the guide port (9) and the movable groove (3) are adapted to the size of the movable rod (7). The guide block (8) and the guide groove (10) are adapted to each other.

6. The wind turbine blade torsional fatigue testing device according to claim 2, characterized in that: The measuring tape (11) and the magnetic block (12) are each provided in two sets, and they are compatible with each other.

7. The torsional fatigue testing device for wind turbine blades according to claim 3, characterized in that: The number of the reinforcing plate (13) and the soft pad (14) are both provided in multiple sets.

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