A fan blade defect detection device

Abstract

The application provides a fan blade defect detection device, and relates to the technical field of fault diagnosis devices.The device comprises a vehicle body, a threaded knob provided with a connecting point for connecting a rope at the axis thereof on one side of the vehicle body, a long rope fixedly connected to one end of the threaded knob, and balls uniformly provided on the long rope and in rolling contact with the fan blade.The application sets an L-shaped plate linkage rope pressing and detection roller mechanism to synchronously narrow the long rope annular area when driving the detection roller to press the blade, thereby forcing the vehicle body and the detection roller to actively enhance the dynamic fitting with the curved surface.Combining the long rope with balls to reduce the moving friction, the vertical winding roller maintains the trajectory accuracy, and the inclined detection roller expands the contact area to adapt to the curved surface.In addition, the visual monitoring is used to realize the stable contact scanning and optical review collaborative detection of the complex curved surface defects.

Description

Technical Field

[0001] This utility model relates to the field of fault diagnosis device technology, and more specifically, to a wind turbine blade defect detection device. Background Technology

[0002] With the rapid development of the wind power industry, wind turbine blades, as core components, directly affect power generation efficiency and safety. Due to long-term exposure to complex and harsh natural environments, wind turbine blades are prone to defects such as cracks, corrosion, and wear, making timely and accurate defect detection crucial. Traditional manual inspection methods suffer from low efficiency, high cost, and significant risks. In recent years, combining inspection technology with robotics has become a research hotspot. Robots can be equipped with various inspection devices to penetrate deep into the complex structural areas of wind turbine blades, achieving automated and intelligent inspection. This effectively improves inspection efficiency and accuracy, reduces labor costs and safety risks, thus demonstrating the broad application prospects of combining wind turbine blade defect detection with robotics.

[0003] However, current robot-mounted wind turbine blade defect detection devices still face challenges in practical applications. Wind turbine blades typically have complex curved surfaces with significant curvature variations at different locations. Existing detection devices, when mounted on a robot, struggle to achieve complete contact with the blade surface. This results in gaps between the detection device and the blade, affecting the accurate acquisition and transmission of detection signals, thus reducing the precision and reliability of defect detection and failing to meet the requirements for accurate defect detection in wind turbine blades.

[0004] Therefore, we have made improvements to this and proposed a wind turbine blade defect detection device. Utility Model Content

[0005] In order to achieve the above-mentioned objectives, this utility model provides a wind turbine blade defect detection device to improve the above-mentioned problems.

[0006] The application is as follows:

[0007] include:

[0008] Body;

[0009] A threaded button, with threads on one side of the vehicle body, and a connection point for rope connection at its axis;

[0010] A long rope, one end of which is fixedly connected to the threaded button;

[0011] Ball bearings are evenly distributed on the long rope and make rolling contact with the fan blades.

[0012] A take-up roller includes a drive source, which is located on the other side of the vehicle body and receives the other end of the long rope. The drive source drives the take-up of the other end of the long rope and restricts the long rope to form a hollow loop around the wind turbine blade.

[0013] The L-shaped plate, which includes a second drive source, rotates to set the body and the adjacent surface of the threaded button, with one end extending toward the long rope at the threaded button and making point contact with it.

[0014] A detection roller is disposed at the other end of the L-shaped plate;

[0015] When the second drive source drives the L-shaped plate to make the detection roller contact the fan blade, the L-shaped plate presses the long rope to place the vehicle body on the fan blade.

[0016] Preferably, the L-shaped plate has a bend at the end extending towards the long rope to prevent the long rope from detaching.

[0017] Preferably, the winding surface of the take-up roller is perpendicular to the annular surface of the long rope.

[0018] Preferably, the contact surface between the detection roller and the fan blade has an inclined surface with the same arc-shaped trend.

[0019] Preferred options also include:

[0020] A camera is mounted on the vehicle body, with its camera area facing the surface of the wind turbine blades.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] In the scheme of this application:

[0023] To address the issues of unstable equipment fit and missed detections due to fluctuations in contact pressure during the inspection of curved surfaces of wind turbine blades in existing technologies, this application proposes a mechanism that links an L-shaped plate with a pressure rope and a detection roller. This mechanism simultaneously narrows the loop area of ​​the long rope as the detection roller presses down on the blade, forcing the vehicle body and detection roller to actively enhance their dynamic fit with the curved surface. Combined with a long rope with ball bearings to reduce moving friction, a vertical winding roller to maintain trajectory accuracy, and an inclined detection roller to expand the contact area to adapt to the curved surface, and supplemented by visual monitoring, this achieves stable contact scanning and optical verification collaborative detection of defects on complex curved surfaces. Attached Figure Description

[0024] Figure 1 This is a front view of a wind turbine blade defect detection device provided in this application;

[0025] Figure 2 A bottom view of a wind turbine blade defect detection device provided in this application;

[0026] Figure 3This is a schematic diagram showing the positional relationship between the winding roller and the vehicle body of a wind turbine blade defect detection device provided in this application.

[0027] The image shows:

[0028] 1. Vehicle body; 2. Threaded button; 3. Long rope; 31. Ball bearing; 4. Take-up roller; 5. L-shaped plate; 6. Detection roller; 7. Camera. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] For an example, please refer to... Figure 1 , Figure 2 and Figure 3 A wind turbine blade defect detection device, comprising:

[0031] Body 1;

[0032] Threaded button 2, the thread is set on one side of the vehicle body 1, and a connection point for rope connection is provided at its axis;

[0033] Long rope 3, one end of which is fixedly connected to threaded button 2;

[0034] The ball bearings 31 are evenly distributed on the long rope 3 and make rolling contact with the fan blades.

[0035] The take-up roller 4 includes a drive source, is located on the other side of the vehicle body 1 and receives the other end of the long rope 3, is driven by the drive source to take up the other end of the long rope 3, and restricts the long rope 3 to form a hollow ring around the wind turbine blade.

[0036] L-shaped plate 5, including a second drive source, rotates to set the adjacent surface of the body 1 and the threaded button 2, with one end extending toward the long rope 3 at the threaded button 2 and making point contact with it;

[0037] The detection roller 6 is located at the other end of the L-shaped plate 5;

[0038] When the second drive source drives the L-shaped plate 5 to make the detection roller 6 contact the fan blade, the L-shaped plate 5 presses the long rope 3 to make the body 1 place on the fan blade.

[0039] During use, the equipment continuously inspects the location of defects on the wind turbine blades by moving the vehicle body 1 on the wind turbine blades. The length of the long rope 3 can be increased or decreased by the take-up roller 4, so that the long rope 3 can be wrapped into a ring long enough to wrap around the wind turbine blades. At the same time, the long rope 3 can be disconnected from the vehicle body 1 at any time by using the threaded button 2. As the vehicle body 1 moves by the wheels, the long rope 3 is tilted between the contact point between the vehicle body 1 and the ball bearing 31 and the wind turbine blades due to gravity and initial velocity, so that the vehicle body 1 can have a greater fit with the wind turbine blades during the movement.

[0040] When the detection roller 6 needs to be in contact with the fan blade, the L-shaped plate 5 is driven and rotates, causing the detection roller 6 to move down and fit into the fan blade. At this time, the other end of the L-shaped plate 5 rotates synchronously and comes into contact with the long rope 3. Since there is an angled suspended area between the long rope 3 and the contact end of the blade due to the height difference, the L-shaped plate 5 presses down on this part of the long rope 3, causing the entire annular area formed by the long rope 3 to narrow, thus making the vehicle body 1 fit the fan blade more closely. At the same time, the detection roller 6 also receives the same fitting effect, making the detection effect more accurate.

[0041] The L-shaped plate 5 has a bend at the end extending towards the long rope 3 to prevent the long rope 3 from detaching;

[0042] This ensures that the contact force between the long rope 3 and the L-shaped plate 5 is continuously and stably transmitted when the subsequent winding roller 4 traction device moves, avoiding the failure of the vehicle body 1 positioning or the fluctuation of the contact pressure of the detection roller 6 due to the displacement of the long rope 3.

[0043] The winding surface of the take-up roller 4 is perpendicular to the annular surface of the long rope 3;

[0044] Ensure that the rolling direction of the ball 31 is consistent with the tangent of the blade surface to reduce sliding friction; at the same time, maintain the movement trajectory of the detection roller 6 in strict accordance with the blade contour to improve the path accuracy of continuous scanning.

[0045] The contact surface between the detection roller 6 and the fan blades is provided with an inclined surface that follows the same arc shape.

[0046] It significantly increases the detection area and improves the probability of defect capture. Furthermore, by increasing the contact area, it disperses pressure and avoids damaging the fragile blade surface. At the same time, the line contact is more adaptable to surface undulations during movement, especially providing more complete coverage of curved concave or convex areas.

[0047] Also includes:

[0048] Camera 7 is mounted on vehicle body 1, with its camera area facing the surface of the wind turbine blades;

[0049] The camera 7 directly utilizes the L-shaped plate 5 to achieve precise positioning of the vehicle body 1 and the smooth movement trajectory traction of the winding roller 4. While the detection roller 6 performs contact detection, it simultaneously acquires high-definition visual information of the blade surface.

[0050] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A device for detecting defects in wind turbine blades, characterized in that, include: Body (1); A threaded button (2) is provided on one side of the vehicle body (1), and a connection point for rope connection is provided at its axis. A long rope (3) is fixedly connected at one end to the threaded button (2); The ball bearings (31) are evenly arranged on the long rope (3) and make rolling contact with the fan blades; The take-up roller (4) includes a drive source, which is located on the other side of the vehicle body (1) and receives the other end of the long rope (3). It is driven by the drive source to take up the other end of the long rope (3) and restricts the long rope (3) to form a hollow ring around the wind turbine blade. L-shaped plate (5), including a second drive source, rotates to set the adjacent surface of the body (1) and the threaded button (2), with one end extending to the long rope (3) at the threaded button (2) and making point contact with it; The detection roller (6) is disposed at the other end of the L-shaped plate (5); When the second drive source drives the L-shaped plate (5) to make the detection roller (6) contact the fan blade, the L-shaped plate (5) presses the long rope (3) to make the car body (1) place on the fan blade.

2. The wind turbine blade defect detection device according to claim 1, characterized in that, The L-shaped plate (5) has a bend at the end extending toward the long rope (3) to prevent the long rope (3) from detaching.

3. The wind turbine blade defect detection device according to claim 2, characterized in that, The winding surface of the take-up roller (4) is perpendicular to the annular surface of the long rope (3).

4. The wind turbine blade defect detection device according to claim 3, characterized in that, The contact surface between the detection roller (6) and the fan blade is provided with an inclined surface that has the same arc-shaped trend.

5. A wind turbine blade defect detection device according to claim 4, characterized in that, Also includes: A camera (7) is mounted on the vehicle body (1), with its camera area facing the surface of the wind turbine blades.

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