An unmanned aerial vehicle based wind power blade continuity testing device

Abstract

This utility model discloses a wind turbine blade continuity testing device based on a drone, relating to the field of wind power equipment testing technology. It includes a drone device with a detachable mounting assembly at its bottom and a camera assembly at its front. A first bracket is detachably mounted at the bottom of the mounting assembly, and a second bracket is installed inside the first bracket. The front end of the second bracket extends from the first bracket, and a hinged frame is hinged to the bottom of the extension of the first bracket. A testing device housing is detachably mounted at the bottom of the hinged frame. This utility model, through a series of structural features, allows the wind turbine blade continuity testing device to adapt to different types of wind turbine blades, broadening its applicability. If a single conductive probe breaks due to improper operation, it can be replaced individually without disassembling the entire conductive probe array, reducing maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of wind power equipment testing technology, specifically a wind turbine blade conductivity testing device based on a drone. Background Technology

[0002] Currently, wind turbine blade continuity testing typically involves manual climbing or using aerial work platforms, which has the following drawbacks: manual operation is unsafe and easily affected by the high-altitude working environment (such as wind speed and weather); testing efficiency is low, with long testing times per blade, making it unsuitable for the maintenance needs of large-scale wind farms; and traditional equipment requires contact testing, which may damage the blade surface. Therefore, there is an urgent need for an automated, non-contact testing device to improve efficiency and safety.

[0003] Most current automated, non-contact testing devices use drones to carry testing equipment. The testing equipment uses a conductive probe array to contact the wind turbine blades for testing. However, since most of the conductive probes in the conductive probe array are rigidly connected, they cannot adapt to contact different types of wind turbine blades, resulting in a lower range of applications. Moreover, maintenance requires the entire conductive probe array to be disassembled and replaced, leading to high maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a wind turbine blade conductivity testing device based on a drone, so as 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 conductivity testing device based on a drone, comprising a drone device, an installation component detachably mounted at the bottom of the drone device, a camera component mounted at the front end of the drone device, a first bracket detachably mounted at the bottom of the installation component, a second bracket mounted inside the first bracket, the front end of the second bracket extending out of the first bracket, a hinge frame hinged to the bottom of the extension end of the first bracket, a detection device housing detachably mounted at the bottom of the hinge frame, a plurality of first insulating sleeves evenly distributed at the bottom of the detection device housing, the bottom of the first insulating sleeves extending into the interior of the detection device housing, a washer ring mounted on the outer surface of the extension end of the first insulating sleeve, a spring mounted at the bottom end of the washer ring, a second insulating sleeve detachably mounted on the top of the first insulating sleeve, a conductive probe mounted inside the second insulating sleeve, and the top of the conductive probe extending out of the second insulating sleeve.

[0006] Preferably, the mounting assembly includes a drone extension frame and a support frame. The support frame is installed at the bottom of the drone extension frame, and two corner brackets are installed at the top of the drone extension frame. The two corner brackets are detachably installed at the bottom of the drone device. The top of the first bracket is detachably installed at the bottom of the support frame. The drone extension frame and the support frame are installed with screws. The drone extension frame increases the thickness of the bottom of the drone device, so that the first bracket is away from the rotor of the drone device.

[0007] Preferably, a lead screw is mounted on the rear end of the second bracket via a slider. The two ends of the lead screw are rotatably connected to the inside of the first bracket. The rear end of the lead screw extends out of the first bracket. A servo motor is mounted on the extended end of the lead screw. The servo motor drives the lead screw to rotate. When the lead screw rotates, it drives the first bracket to move linearly via the slider, thereby adjusting the length of the extended end of the first bracket.

[0008] Preferably, a U-shaped frame is installed at the top of the extension end of the second bracket, and an electric push rod is hinged between the bottom end of the U-shaped frame and the top end of the hinge frame. The electric push rod serves as a power source, and its extension and retraction motion directly acts on the hinge frame. When the output end of the electric push rod shortens, the hinge structure closes, and the hinge frame and the second bracket are perpendicular to each other. When the push rod extends, the hinge structure unfolds, pushing the hinge frame to rotate counterclockwise around the axis of rotation.

[0009] Preferably, a conductive block is installed inside the first insulating sleeve, and a positioning sleeve plate is fitted onto the bottom outer surface of several first insulating sleeves. The bottom of the conductive block extends out of the first insulating sleeve, and a flexible connecting line is provided at the extended end of the conductive block. A resistance detection module is provided at the bottom end of the flexible connecting line. The resistance detection module is fixedly installed on the outer shell of the detection device. The positioning sleeve plate limits the first insulating sleeve, allowing the first insulating sleeve to perform vertical linear movement. The flexible connecting line is in a conductive state with the conductive probe. The resistance detection module can collect the resistance value between the probe and the blade in real time through the flexible connecting line and the conductive probe to determine the continuity.

[0010] Preferably, the first insulating sleeve above the conductive block has a threaded hole inside, the bottom end of the conductive probe has a threaded section, the bottom of the threaded section extends into the second insulating sleeve, and the bottom end of the threaded section has a conductive head. The threaded section and the threaded hole are used to fix the second fixing block to the top of the first fixing sleeve. The top end of the conductive block has a hole that matches the conductive head. When the second insulating sleeve is installed inside the first insulating sleeve, the conductive head is inserted into the corresponding hole, so that the conductive probe and the conductive block are in a conductive state.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This UAV-based wind turbine blade conductivity testing device uses a spring-buffered conductive probe that is compressed under the pressure of the UAV during testing. This adapts to the undulations of the blade surface, ensuring full contact between the conductive probe and the oxide layer. The hinged frame's electric push rod allows for angle adjustment to match different tilt angles of the blade surface. This enables the wind turbine blade conductivity testing device to adapt to different types of wind turbine blades, thus broadening its applicability.

[0012] 2. This UAV-based wind turbine blade conductivity testing device uses several detachable conductive probes. If a single conductive probe breaks due to improper operation during use, it can be replaced individually without disassembling the entire conductive probe array, thus reducing maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the first and second supports of this utility model; Figure 3 This is a cross-sectional schematic diagram of the outer shell structure of the detection device of this utility model; Figure 4 This is a schematic diagram of the conductive probe structure of this utility model; Figure 5 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0014] In the diagram: 1. Unmanned Aerial Vehicle (UAV) equipment; 2. Mounting components; 201. Angle bracket; 202. UAV extension frame; 203. Support frame; 3. First bracket; 4. Detection device housing; 5. Camera assembly; 6. Lead screw; 7. Second bracket; 8. Servo motor; 9. First insulating sleeve; 10. Second insulating sleeve; 11. Conductive probe; 12. Washer ring; 13. Spring; 14. Positioning sleeve; 15. Flexible connecting wire; 16. Resistance detection module; 17. Threaded section; 18. Conductive head; 19. Threaded hole; 20. Conductive block; 21. U-shaped frame; 22. Electric push rod; 23. Hinge frame. Detailed Implementation

[0015] 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.

[0016] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] like Figures 1 to 5 As shown, this embodiment of the wind turbine blade continuity testing device based on a drone includes a drone device 1. A mounting component 2 is detachably mounted on the bottom of the drone device 1. The drone device 1 is equipped with GPS positioning, a gimbal for image stabilization, and a long-endurance battery to meet the requirements for stable high-altitude flight. A camera component 5 is mounted on the front of the drone device 1, which can acquire images. The wind turbine blade continuity testing device needs to be used in conjunction with a ground control terminal. The ground control terminal sets the detection path through software and monitors the drone's flight status and detection data in real time. The aforementioned ground control terminal is a commonly used device in wind turbine blade continuity testing devices. A first bracket 3 is detachably mounted on the bottom of the mounting component 2. A second bracket 7 is installed inside the first bracket 3. The front end of the second bracket 7 extends out of the first bracket 3. The first bracket 3 can be adjusted within the second bracket 7 to allow for resting and adjusting its extension length. A hinge frame 23 is hinged to the bottom of the extension end of the first bracket 3. A detection device housing 4 is detachably mounted on the bottom of the hinge frame 23. The hinge frame 23 can be rotated to adjust the detection device housing. At an angle of 4, several first insulating sleeves 9 are evenly distributed at the bottom of the outer shell 4 of the testing device. The bottom of the first insulating sleeve 9 extends into the interior of the outer shell 4 of the testing device. The first insulating sleeve 9 is slidably connected to the outer shell 4 of the testing device. A washer 12 is installed on the outer surface of the extended end of the first insulating sleeve 9. A spring 13 is installed at the bottom end of the washer 12. When conducting a wind turbine blade conductivity test, the conductive probe 11 contacts the outer surface of the wind turbine blade. Pressure is applied by the UAV equipment 1, and the spring 13 contracts, causing the conductive probe 11 to adhere to the conductive part of the wind turbine blade surface. A second insulating sleeve 10 is detachably installed on the top of the first insulating sleeve 9. The conductive probe 11 is installed inside the second insulating sleeve 10. The second insulating sleeve 10 supports the conductive probe 11. The top of the conductive probe 11 extends out of the second insulating sleeve 10. When conducting a wind turbine blade conductivity test, the tip of the conductive probe 11 adheres to the wind turbine blade.

[0018] Specifically, the mounting assembly 2 includes a drone extension frame 202 and a support frame 203. The support frame 203 is installed at the bottom of the drone extension frame 202. Two corner brackets 201 are installed at the top of the drone extension frame 202. The two corner brackets 201 are detachably installed at the bottom of the drone device 1. The top of the first bracket 3 is detachably installed at the bottom of the support frame 203. The drone extension frame 202 and the support frame 203 are installed with screws. The drone extension frame 202 increases the thickness of the bottom of the drone device 1, so that the first bracket 3 is away from the rotor of the drone device 1.

[0019] Furthermore, a lead screw 6 is mounted on the rear end of the second bracket 7 via a slider. The two ends of the lead screw 6 are rotatably connected to the inside of the first bracket 3. The rear end of the lead screw 6 extends out of the first bracket 3. A servo motor 8 is mounted on the extended end of the lead screw 6. The servo motor 8 drives the lead screw 6 to rotate. When the lead screw 6 rotates, it drives the first bracket 3 to move linearly via the slider, thereby adjusting the length of the extended end of the first bracket 3.

[0020] Furthermore, a U-shaped frame 21 is installed at the top of the extension end of the second bracket 7. An electric push rod 22 is hinged between the bottom end of the U-shaped frame 21 and the top end of the hinge frame 23. The electric push rod 22 serves as a power source, and its extension and retraction motion directly acts on the hinge frame 23. When the output end of the electric push rod 22 shortens, the hinge structure closes, and the hinge frame 23 and the second bracket 7 are perpendicular to each other. When the push rod extends, the hinge structure unfolds, pushing the hinge frame 23 to rotate counterclockwise around the axis of rotation.

[0021] Furthermore, a conductive block 20 is installed inside the first insulating sleeve 9. A positioning sleeve 14 is fitted onto the bottom outer surface of several first insulating sleeves 9. The first insulating sleeve 9 extends from the bottom of the conductive block 20. A flexible connecting line 15 is provided at the extended end of the conductive block 20. A resistance detection module 16 is provided at the bottom end of the flexible connecting line 15. The resistance detection module 16 is fixedly installed on the outer shell 4 of the detection device. The positioning sleeve 14 limits the first insulating sleeve 9, allowing the first insulating sleeve 9 to perform vertical linear movement. The flexible connecting line 15 is in a conductive state with the conductive probe 11. The resistance detection module 16 can collect the resistance value between the probe and the blade in real time through the flexible connecting line 15 and the conductive probe 11 to determine the continuity.

[0022] Furthermore, the first insulating sleeve 9 above the conductive block 20 has a threaded hole 19 inside, the bottom end of the conductive probe 11 has a threaded section 17, the bottom of the threaded section 17 extends into the second insulating sleeve 10, and the bottom end of the threaded section 17 has a conductive head 18. The threaded section 17 and the threaded hole 19 work together to fix the second fixing block to the top of the first fixing sleeve. The top end of the conductive block 20 has a hole that matches the conductive head 18. When the second insulating sleeve 10 is installed inside the first insulating sleeve 9, the conductive head 18 is inserted into the corresponding hole, so that the conductive probe 11 and the conductive block 20 are in a conductive state.

[0023] The usage method of this embodiment is as follows: During assembly, the mounting component 2 is detachably installed to the bottom of the UAV device 1 via the corner bracket 201, ensuring that the first bracket 3 is rigidly connected to the support frame 203. The conductive probe 11 is screwed into the threaded hole 19 of the conductive block 20 via the threaded section 17, and the conductive head 18 is inserted into the hole to form a conductive path. Then, the UAV device 1 carrying the detection device flies to the blade lightning arrester area, and the image is transmitted back to the ground terminal in real time via the camera component 5. When the UAV device 1 approaches the detection area, the tip of the conductive probe 11 is oriented towards the wind turbine blade. The extension length of the second bracket 7 is adjusted by the servo motor 8 driving the lead screw 6, so that the detection device... The outer shell 4 approaches the blade surface. The electric push rod 22 extends and retracts to control the tilt angle of the hinge frame 23, ensuring that the probe array is parallel to the blade surface. The UAV device 1 slowly descends to apply pressure, and the conductive probe 11 pierces the oxide layer of the blade. The spring 13 contracts, causing the conductive probe 11 to adhere to the conductive part of the wind turbine blade surface. The UAV lifts up, and the spring 13 rebounds to detach the probe from the blade surface. After the test is completed, the electric push rod 22 retracts to reset the angle of the hinge frame 23. The servo motor 8 drives the lead screw 6 to retract the second bracket 7. During use, the testing equipment is at risk of falling or colliding. If the conductive probe 11 breaks, it can be replaced individually.

[0024] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An unmanned aerial vehicle (UAV) based wind turbine blade accessibility testing device comprising a UAV apparatus (1), characterized in that: The bottom of the drone device (1) is detachably equipped with an installation component (2), and the front end of the drone device (1) is equipped with a camera component (5). The bottom of the installation component (2) is detachably equipped with a first bracket (3), and a second bracket (7) is installed inside the first bracket (3). The front end of the second bracket (7) extends out of the first bracket (3), and a hinge frame (23) is hinged to the bottom of the extension end of the first bracket (3). The bottom end of the hinge frame (23) is detachably equipped with a detection device housing (4). A plurality of first insulating sleeves (9) are evenly distributed at the bottom of the device housing (4). The bottom of the first insulating sleeve (9) extends into the interior of the detection device housing (4). A washer (12) is installed on the outer surface of the extended end of the first insulating sleeve (9). A spring (13) is installed at the bottom end of the washer (12). A second insulating sleeve (10) is detachably installed on the top of the first insulating sleeve (9). A conductive probe (11) is installed inside the second insulating sleeve (10). The top of the conductive probe (11) extends out of the second insulating sleeve (10). 2.The UAV-based wind power blade conductive test device according to claim 1, wherein: The mounting assembly (2) contains a drone extension frame (202) and a support frame (203). The support frame (203) is installed at the bottom of the drone extension frame (202). Two corner brackets (201) are installed at the top of the drone extension frame (202). The two corner brackets (201) are detachably installed at the bottom of the drone equipment (1). The top of the first bracket (3) is detachably installed at the bottom of the support frame (203). 3.The UAV-based wind power blade conductive test device according to claim 1, wherein: The rear end of the second bracket (7) is equipped with a lead screw (6) via a slider. The two ends of the lead screw (6) are rotatably connected to the inside of the first bracket (3). The rear end of the lead screw (6) extends out of the first bracket (3). A servo motor (8) is installed at the extended end of the lead screw (6).

4. The UAV-based wind turbine blade conductive test device of claim 1, wherein: A U-shaped frame (21) is installed at the top of the extension end of the second bracket (7), and an electric push rod (22) is hinged between the bottom end of the U-shaped frame (21) and the top end of the hinged frame (23).

5. The UAV-based wind turbine blade conductive test device of claim 1, wherein: The first insulating sleeve (9) has a conductive block (20) installed inside. The bottom outer surfaces of several first insulating sleeves (9) are fitted with a positioning sleeve plate (14). The bottom of the conductive block (20) extends out of the first insulating sleeve (9). The extended end of the conductive block (20) is provided with a flexible connecting line (15). The bottom end of the flexible connecting line (15) is provided with a resistance detection module (16). The resistance detection module (16) is fixedly installed on the outer shell (4) of the detection device. 6.The UAV-based wind power blade conductive test device of claim 5, wherein: The first insulating sleeve (9) above the conductive block (20) has a threaded hole (19) inside, the bottom end of the conductive probe (11) has a threaded section (17), the bottom of the threaded section (17) extends out to form a second insulating sleeve, and the bottom end of the threaded section (17) has a conductive head (18).

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