Wind driven generator blade detection device

Abstract

The utility model relates to the technical field of wind driven generator blade detection, and discloses a wind driven generator blade detection device which comprises an unmanned aerial vehicle body, the lower surface of the unmanned aerial vehicle body is fixedly connected with a supporting mechanism, and the four corners of the lower surface of the unmanned aerial vehicle body are fixedly connected with laser range finders matched with the supporting mechanism. The laser range finder is electrically connected with a processor in the unmanned aerial vehicle body, a fixing base is fixedly connected to the lower surface of the unmanned aerial vehicle body, a limiting mechanism is slidably connected to the fixing base, a fixing assembly for fixing the limiting mechanism is arranged on the back face of the fixing base, and a sound collection device is detachably connected to the fixing base. According to the wind driven generator blade detection device of the utility model, the laser range finder can measure the distance of a landing site and transmit data to the processor, so that the electric telescopic rod can be rapidly adjusted, and therefore, an unmanned aerial vehicle can rapidly land, and can be in a horizontal state; and a flat terrain does not need to be found everywhere.

Description

Technical Field

[0001] The utility model relates to the technical field of wind generator blade detection, in particular to a wind generator blade detection device. Background Art

[0002] As a clean and renewable form of energy, wind power generation has developed rapidly around the world in recent years. As a key component of a wind turbine generator set, the performance, quality and safety of wind turbine blades directly affect the operating efficiency and life of the entire wind turbine generator set. Since the blades are exposed to a complex natural environment for a long time, they are subject to multiple factors such as strong winds, sand scouring, atmospheric oxidation, lightning strikes and humid air corrosion, and are prone to damage, cracks or other abnormal conditions. If these damages are not discovered and handled in time, they may cause serious damage or even breakage of the blades, which in turn may cause the unit to fail and shut down, resulting in huge economic losses. Therefore, it is particularly important to conduct regular and comprehensive inspections of wind turbine blades.

[0003] At present, the patent with the announcement number CN212622315U discloses an online non-contact detection device for defects in wind turbine blades. The device can realize the online non-contact detection function of the blades of the wind turbine at high altitude. The device includes a drone, an X-ray transmitting device, an X-ray receiving imaging device, and a trailer. The device can transport the equipment to the blade position through the drone, so that the blade is between the X-ray transmitting device and the receiving device. The transmitting device emits X-rays, and the receiving device is responsible for imaging to detect cracks or deformation defects on the surface and inside of the blade. The drone moves along the blade and can detect different positions of the blade. The device does not need to contact the blade and will not damage the blade. In addition, defects on the surface or inside of the blade can be shown in the received image, which improves the shortcomings of existing surface photography to identify defects.

[0004] However, the above technology still has the following problems:

[0005] Since wind turbines are mostly installed on mountains, before and after using drones to take photos and videos of the fan blade surface, the drones need to take off or land from the ground. The terrain on the mountain is uneven, and the uneven ground may cause the drone to vibrate during takeoff. This vibration may cause the drone to move, thereby affecting its takeoff attitude and stability. Especially after the propeller rotates, this vibration effect may be more obvious. Similarly, the uneven ground will increase the difficulty of drone attitude control, which may cause the drone to tilt or roll over during landing. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a wind turbine blade detection device, which can quickly level the blades and provide protection for the take-off and landing of unmanned aerial vehicles.

[0007] The utility model provides the following technical solution: a wind turbine blade detection device, comprising an unmanned aerial vehicle body, the lower surface of the unmanned aerial vehicle body is fixedly connected to a supporting mechanism, laser rangefinders matching the supporting mechanism are fixedly connected at four corners of the lower surface of the unmanned aerial vehicle body, the laser rangefinder is electrically connected to a processor inside the unmanned aerial vehicle body, a fixed seat is fixedly connected to the lower surface of the unmanned aerial vehicle body, a limiting mechanism is slidably connected to the fixed seat, a fixing component for fixing the limiting mechanism is arranged on the back of the fixed seat, and a sound collection device is detachably connected to the fixed seat.

[0008] Furthermore, there are two groups of the support mechanism, which are symmetrically arranged left and right about the drone body, and each group has two members, and the two members in each group are symmetrically arranged front and back about the drone body.

[0009] Furthermore, the support mechanism includes an electric telescopic rod fixed to the lower surface of the drone body, the output end of the electric telescopic rod is fixedly connected to an arc rod, and a circular hole is opened at the lower end of the arc rod.

[0010] Furthermore, a laser rangefinder is located directly above the circular hole.

[0011] Furthermore, the fixing seat includes a connecting rod fixed to the lower surface of the drone body, the lower end of the connecting rod is fixedly connected to an L-shaped support plate, both sides of the surface of the L-shaped support plate are fixedly connected to a first baffle, the output end of the first baffle is fixedly connected to a second baffle, a slide groove is provided on the L-shaped support plate, the upper wall of the slide groove is provided with a first groove, and the lower wall of the slide groove is provided with a second groove.

[0012] Furthermore, the limiting mechanism includes a slide plate slidably connected in the slide groove, a first fixed block is fixedly connected to the front side of the upper surface of the slide plate, and a second fixed block is fixedly connected to the rear side of the lower surface of the slide plate.

[0013] Furthermore, the fixing assembly includes a tightening bolt threadedly connected to the back side of the L-shaped supporting plate, and a fixing plate is rotatably connected to the tightening bolt.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] This wind turbine blade detection device can quickly measure the distance to the landing site through the action of a laser rangefinder, thereby transmitting data to a processor so that the electric telescopic rod can be quickly adjusted, thereby allowing the drone to land quickly and be in a horizontal state. There is no need to look for relatively flat terrain everywhere, which saves detection time and also facilitates the next take-off. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the bottom surface of the UAV body of the utility model;

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the fixing seat of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the fixing assembly of the utility model;

[0020] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the fixing seat of the utility model;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the limiting mechanism of the utility model.

[0022] In the figure: 1. UAV body; 2. Support mechanism; 201. Electric telescopic rod; 202. Arc rod; 203. Round hole; 3. Laser rangefinder; 4. Fixed seat; 401. Connecting rod; 402. L-shaped supporting plate; 403. First baffle; 404. Second baffle; 405. Slide; 406. First groove; 407. Second groove; 5. Limiting mechanism; 501. Slide plate; 502. First fixing block; 503. Second fixing block; 6. Fixing assembly; 601. Tightening bolt; 602. Fixing plate; 7. Sound collection equipment. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] See also Figures 1 to 6 A wind turbine blade detection device includes a drone body 1, the lower surface of the drone body 1 is fixedly connected to a support mechanism 2, laser rangefinders 3 matching the support mechanism 2 are fixedly connected at the four corners of the lower surface of the drone body 1, the laser rangefinder 3 is electrically connected to a processor inside the drone body 1, a fixing seat 4 is fixedly connected to the lower surface of the drone body 1, a limiting mechanism 5 is slidably connected to the fixing seat 4, a fixing component 6 for fixing the limiting mechanism 5 is arranged on the back of the fixing seat 4, and a sound collection device 7 is detachably connected to the fixing seat 4.

[0025] The wind turbine blade detection device in the utility model is similar in structure to the existing online non-contact detection device for fan blade defects. For example, the patent with announcement number CN212622315U discloses an online non-contact detection device for fan blade defects. The main improvement of the utility model is that the landing site is quickly measured by the laser rangefinder 3, so that the data is transmitted to the processor, so that the electric telescopic rod 201 can be quickly adjusted, so that the drone can land quickly and can be in a horizontal state. There is no need to look for relatively flat terrain everywhere, which saves detection time and is also convenient for the next takeoff. Figures 1 to 6 As shown, a wind turbine blade detection device in the utility model, when in use, first place the sound collection device 7 on the L-shaped support plate 402, at this time the sound collection device 7 is stuck between the first baffle plate 403 and the second baffle plate 404, then push the slide plate 501 forward along the slide groove 405 until the second fixing block 503 slides into the second groove 407, then rotate the fixing plate 602 downward so that the inner surface of the fixing plate 602 is in contact with the surface of the slide plate 501, tighten the tightening bolt 601, and follow the opposite operation to release the fixation of the sound collection device 7, so that The sound collecting device 7 is taken down, and the sound collecting device 7 is installed and pulled out. When inspecting the blades, the drone body 1 can be placed horizontally and then take off, and take photos and videos of the surface of the blades to observe whether there are pores, cracks, wear, corrosion, carbonization and other damages on the surface of the blades. After taking pictures, the drone body 1 is retracted. When the drone body 1 is about to land, the laser rangefinder 3 transmits the measured distance to the processor, thereby driving the electric telescopic rod 201 to make the front end of the arc rod 202 touch the ground, and the other arc rods 202 are operated in the same way. When the drone body 1 flies over the surface of the blade, the sound collection device (Zoom F6) 7 collects the sound emitted by the blade, and then detects the blade based on the collected sound to determine whether there is damage, cracks or other abnormal conditions. It should be noted that: a processor is electrically connected to the drone body 1, the laser rangefinder 3 is electrically connected to the processor, and the electric telescopic rod 201 is also electrically connected to the processor. The processor is used to process the data measured by the laser rangefinder 3 and drive the electric telescopic rod 201, thereby adjusting the length of the support mechanism 2, so that the drone body 1 can adapt to uneven terrain and can land quickly.

[0026] like Figure 2 As shown, there are two groups of the support mechanisms 2 , which are symmetrically arranged left and right about the drone body 1 , each group has two members, and the two members in each group are symmetrically arranged front and back about the drone body 1 .

[0027] Specifically, the four supporting mechanisms 2 operate independently, and the lengths are adjusted by the processor after the laser rangefinder 3 completes the distance measurement.

[0028] like Figure 1 As shown, the support mechanism 2 includes an electric telescopic rod 201 fixed to the lower surface of the drone body 1, the output end of the electric telescopic rod 201 is fixedly connected to an arc rod 202, and a circular hole 203 is opened at the lower end of the arc rod 202.

[0029] Specifically, when the drone body 1 is about to land, the laser rangefinder 3 emits a laser and shoots it from the circular hole 203 to the ground, measures the distance, and transmits it to the processor inside the drone body 1, thereby driving the electric telescopic rod 201, so that the front end of the arc rod 202 touches the ground, and the other arc rods 202 also perform the same operation.

[0030] like Figure 2 As shown, the laser rangefinder 3 is located directly above the circular hole 203 .

[0031] Specifically, the laser rangefinder 3 is located directly above the circular hole 203, so that the laser can pass through the circular hole 203 and hit the ground, making the distance measurement more accurate.

[0032] like Figure 3 or Figure 5 As shown, the fixing seat 4 includes a connecting rod 401 fixed to the lower surface of the drone body 1, the lower end of the connecting rod 401 is fixedly connected to an L-shaped support plate 402, both sides of the surface of the L-shaped support plate 402 are fixedly connected to a first baffle 403, the output end of the first baffle 403 is fixedly connected to a second baffle 404, a slide groove 405 is provided on the L-shaped support plate 402, the upper wall of the slide groove 405 is provided with a first groove 406, and the lower wall of the slide groove 405 is provided with a second groove 407.

[0033] Specifically, the sound collecting device 7 is placed on the L-shaped supporting plate 402 , and the sound collecting device 7 is stuck between the first baffle plate 403 and the second baffle plate 404 , and the slide groove 405 is used for the slide plate 501 to slide.

[0034] like Figure 6 As shown, the limiting mechanism 5 includes a slide plate 501 slidably connected in the slide groove 405, a first fixed block 502 is fixedly connected to the front side of the upper surface of the slide plate 501, and a second fixed block 503 is fixedly connected to the rear side of the lower surface of the slide plate 501. The first groove 406 is used to receive the first fixed block 502 to prevent the front end of the slide plate 501 from affecting the installation and disassembly of the sound collection device 7, and the second groove 407 is used to receive the second fixed block 503 to avoid affecting the rotation of the fixed plate 602.

[0035] Specifically, the sound collection device 7 is first placed on the L-shaped support plate 402. At this time, the sound collection device 7 is stuck between the first baffle 403 and the second baffle 404. Then the slide plate 501 is pushed forward along the slide groove 405 until the second fixing block 503 slides into the second groove 407. The sound collection device 7 can be limited and preliminarily fixed.

[0036] like Figure 4 As shown, the fixing assembly 6 includes a tightening bolt 601 threadedly connected to the back of the L-shaped supporting plate 402, and a fixing plate 602 is rotatably connected to the tightening bolt 601.

[0037] Specifically, after the second fixing block 503 slides into the second groove 407, the fixing plate 602 is rotated downward so that the inner surface of the fixing plate 602 is in contact with the surface of the slide plate 501, and the tightening bolt 601 can be tightened to fix the limiting mechanism 5 to prevent the sound collection device 7 from detaching after the limiting mechanism 5 slides.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wind turbine blade detection device, comprising an unmanned aerial vehicle body (1), characterized in that: The lower surface of the drone body (1) is fixedly connected to a support mechanism (2); laser rangefinders (3) matching the support mechanism (2) are fixedly connected to the four corners of the lower surface of the drone body (1); the laser rangefinder (3) is electrically connected to a processor inside the drone body (1); a fixing seat (4) is fixedly connected to the lower surface of the drone body (1); a limiting mechanism (5) is slidably connected to the fixing seat (4); a fixing component (6) for fixing the limiting mechanism (5) is arranged on the back of the fixing seat (4); and a sound collection device (7) is detachably connected to the fixing seat (4).

2. A wind turbine blade detection device according to claim 1, characterized in that: The supporting mechanisms (2) include two groups, which are arranged symmetrically with respect to the drone body (1). Each group includes two members, and the two members in each group are arranged symmetrically with respect to the drone body (1).

3. A wind turbine blade detection device according to claim 1 or 2, characterized in that: The support mechanism (2) comprises an electric telescopic rod (201) fixed to the lower surface of the drone body (1); the output end of the electric telescopic rod (201) is fixedly connected to an arc-shaped rod (202); and a circular hole (203) is provided at the lower end of the arc-shaped rod (202).

4. A wind turbine blade detection device according to claim 3, characterized in that: The laser rangefinder (3) is located directly above the circular hole (203).

5. A wind turbine blade detection device according to claim 1, 2 or 4, characterized in that: The fixing seat (4) comprises a connecting rod (401) fixed to the lower surface of the drone body (1); the lower end of the connecting rod (401) is fixedly connected to an L-shaped support plate (402); both sides of the surface of the L-shaped support plate (402) are fixedly connected to a first baffle plate (403); the output end of the first baffle plate (403) is fixedly connected to a second baffle plate (404); a slide groove (405) is provided on the L-shaped support plate (402); the upper wall of the slide groove (405) is provided with a first groove (406); and the lower wall of the slide groove (405) is provided with a second groove (407).

6. A wind turbine blade detection device according to claim 3, characterized in that: The fixing seat (4) comprises a connecting rod (401) fixed to the lower surface of the drone body (1); the lower end of the connecting rod (401) is fixedly connected to an L-shaped support plate (402); both sides of the surface of the L-shaped support plate (402) are fixedly connected to a first baffle plate (403); the output end of the first baffle plate (403) is fixedly connected to a second baffle plate (404); a slide groove (405) is provided on the L-shaped support plate (402); the upper wall of the slide groove (405) is provided with a first groove (406); and the lower wall of the slide groove (405) is provided with a second groove (407).

7. A wind turbine blade detection device according to claim 5, characterized in that: The limiting mechanism (5) comprises a slide plate (501) slidably connected in the slide groove (405), a first fixed block (502) is fixedly connected to the front side of the upper surface of the slide plate (501), and a second fixed block (503) is fixedly connected to the rear side of the lower surface of the slide plate (501).

8. A wind turbine blade detection device according to claim 6, characterized in that: The limiting mechanism (5) comprises a slide plate (501) slidably connected in the slide groove (405), a first fixed block (502) is fixedly connected to the front side of the upper surface of the slide plate (501), and a second fixed block (503) is fixedly connected to the rear side of the lower surface of the slide plate (501).

9. A wind turbine blade detection device according to claim 6, 7 or 8, characterized in that: The fixing assembly (6) comprises a tightening bolt (601) threadedly connected to the back of the L-shaped supporting plate (402), and a fixing plate (602) is rotatably connected to the tightening bolt (601).

10. A wind turbine blade detection device according to claim 5, characterized in that: The fixing assembly (6) comprises a tightening bolt (601) threadedly connected to the back of the L-shaped supporting plate (402), and a fixing plate (602) is rotatably connected to the tightening bolt (601).

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