A visual drone for detecting exterior wall defects

Abstract

This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a visual UAV for detecting exterior wall defects. It includes a UAV body with a detection mechanism at its bottom. The detection mechanism includes a guide rail fixedly connected to the bottom of the UAV body, a slider slidably connected to the surface of the guide rail, and a movable base plate fixedly connected to the bottom of the slider. This utility model uses the output shaft of a servo motor to drive a worm gear to rotate. The worm gear, through a worm wheel, drives a rotating shaft to rotate on the movable base plate. The rotating shaft, through a rotating rod, drives a movable frame to rotate. The movable frame rotates a detection camera to both sides of the UAV body, preventing the UAV body from obstructing the detection camera. Furthermore, an adjusting cylinder, through a piston rod, pushes the detection camera to rotate on the movable frame, adjusting the detection angle of the camera and thus improving the quality of exterior wall defect detection.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, specifically a visual UAV for detecting defects in exterior walls. Background Technology

[0002] Detection of exterior wall defects is an important task, and visual drones can play a vital role in this. Visual drones can fly around buildings and use their high-definition cameras and image recognition technology to detect exterior wall defects such as cracks, damage, and leaks.

[0003] Visual drones typically use cameras to detect defects in exterior walls. However, most of the cameras on visual drones are located at the bottom of the drone. When encountering a corner of an exterior wall during the detection process, the camera at the bottom of the drone is blocked by the drone body, making it impossible for the camera to accurately detect the corner of the exterior wall and reducing the quality of the visual drone's exterior wall defect detection. Utility Model Content

[0004] The purpose of this invention is to provide a visual drone for detecting exterior wall defects, in order to solve the problem mentioned in the background art where, when encountering the corner of an exterior wall during the detection process, the camera located at the bottom of the drone is blocked by the drone body, causing the camera to be unable to accurately detect the corner of the exterior wall, thus reducing the quality of exterior wall defect detection by the visual drone.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls, comprising a UAV body, a detection mechanism at the bottom of the UAV body, a guide rail fixedly connected to the bottom of the UAV body, a slider slidably connected to the surface of the guide rail, a movable base plate fixedly connected to the bottom of the slider, a rotating shaft rotatably connected to the surface of the movable base plate, a rotating rod fixedly connected to the surface of the rotating shaft, a movable frame fixedly connected to the surface of the rotating rod, a multi-stage cylinder fixedly mounted on the UAV body, the piston rod of the multi-stage cylinder fixedly connected to the surface of the movable base plate, a servo motor fixedly connected to the bottom of the movable base plate, a worm gear fixedly connected to the output shaft of the servo motor, a worm wheel fixedly connected to the surface of the rotating shaft, an adjusting rod rotatably connected to the surface of the movable frame, a detection camera fixedly mounted on the surface of the adjusting rod, an adjusting cylinder rotatably connected to the surface of the movable frame, and the piston rod of the adjusting cylinder rotatably connected to the surface of the detection camera.

[0006] Preferably, two sets of guide rails and sliders are provided, and the movable base plate slides on the bottom of the UAV body via the two sets of guide rails and sliders.

[0007] Preferably, the multi-stage cylinder pushes the movable base plate to slide linearly on the bottom of the UAV body through multi-stage piston rods.

[0008] Preferably, the movable frame rotates on one side of the movable base plate via a pivot and a rotating rod, and the movable frame drives the detection camera to rotate synchronously on one side of the movable base plate.

[0009] Preferably, the worm and the worm wheel mesh with each other, the servo motor drives the worm to rotate through the output shaft, and the worm drives the rotating shaft to rotate on one side of the moving base plate through the worm wheel.

[0010] Preferably, the end of the movable frame closest to the detection camera is in an "H" shape, and the detection camera rotates at the end of the movable frame away from the movable base plate via an adjusting rod.

[0011] Preferably, the adjusting cylinder drives the detection camera to rotate at the end of the movable frame away from the movable base plate via a piston rod, and the adjusting cylinder itself rotates on the movable frame during the driving process.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This visual drone uses the output shaft of a servo motor to drive a worm gear to rotate. The worm gear drives a rotating shaft to rotate on a movable base plate via a worm wheel. The rotating shaft drives a movable frame to rotate via a rotating rod. The movable frame rotates the detection camera to both sides of the drone body, preventing the drone body from obstructing the detection camera. Furthermore, an adjusting cylinder pushes the detection camera to rotate on the movable frame via a piston rod, thereby adjusting the detection angle of the detection camera and improving the quality of the detection camera's external wall defect detection.

[0014] 2. This visual drone uses a multi-stage piston rod of a multi-stage cylinder to push a movable base plate to slide linearly on the bottom of the drone body. The movable base plate drives the detection camera to slide linearly on the bottom of the drone body through a movable frame, thereby changing the distance between the detection camera and the wall and ensuring the clarity of the detection camera's detection of the wall. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention, viewed from the front and from below.

[0017] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is a partial three-dimensional schematic diagram of the movable base plate structure of this utility model, viewed from the front and from below.

[0019] Figure 5 This is a partial three-dimensional back view of one end of the movable frame of this utility model.

[0020] In the diagram: 1. UAV body; 2. Guide rail; 21. Slider; 22. Movable base plate; 23. Rotary shaft; 24. Rotating rod; 25. Movable frame; 26. Multi-stage cylinder; 3. Servo motor; 31. Worm gear; 32. Worm wheel; 33. Adjusting rod; 34. Detection camera; 35. Adjusting cylinder. 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 Figure 1-5 One embodiment provided by this utility model:

[0023] A visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls includes a UAV body 1. A detection mechanism is located at the bottom of the UAV body 1. The detection mechanism includes a guide rail 2, which is fixedly connected to the bottom of the UAV body 1. A slider 21 is slidably connected to the surface of the guide rail 2. A movable base plate 22 is fixedly connected to the bottom of the slider 21. A rotating shaft 23 is rotatably connected to the surface of the movable base plate 22. A rotating rod 24 is fixedly connected to the surface of the rotating shaft 23. A movable frame 25 is fixedly connected to the surface of the rotating rod 24. A multi-stage cylinder 26 is fixedly mounted on the UAV body 1. The piston rod of the multi-stage cylinder 26 is fixedly connected to the surface of the movable base plate 22. A servo motor 3 is fixedly connected to the bottom of the movable base plate 22. A [missing information - likely a component or component] is fixedly connected to the output shaft of the servo motor 3. A worm gear 31 and a worm wheel 32 are fixedly connected to the surface of the rotating shaft 23. An adjusting rod 33 is rotatably connected to the surface of the movable frame 25. A detection camera 34 is fixedly mounted on the surface of the adjusting rod 33. An adjusting cylinder 35 is rotatably connected to the surface of the movable frame 25. The piston rod of the adjusting cylinder 35 is rotatably connected to the surface of the detection camera 34. This detection mechanism can rotate the detection camera 34 to both sides of the drone body 1 to avoid the drone body 1 from obstructing the detection of the detection camera 34, thereby improving the quality of the detection of external wall defects by the detection camera 34. Furthermore, the detection camera 34 can move linearly on the drone body 1 to change the distance between the detection camera 34 and the wall, thereby improving the clarity of the detection during the detection.

[0024] Furthermore, there are two sets of guide rails 2 and sliders 21. The guide rails 2 and sliders 21 are made of high-strength aluminum alloy and the surface is anodized. The sliders 21 and the movable base plate 22 are fixedly connected by countersunk screws to prevent loosening due to vibration during flight. The movable base plate 22 slides on the bottom of the UAV body 1 through the two sets of guide rails 2 and sliders 21, ensuring the stability of the movable base plate 22 sliding horizontally on the bottom of the UAV body 1.

[0025] Furthermore, the multi-stage cylinder 26 pushes the movable base plate 22 to slide linearly on the bottom of the drone body 1 through the multi-stage piston rod. The movable base plate 22 drives the movable frame 25 to slide synchronously on the bottom of the drone body 1. The movable frame 25 drives the detection camera 34 to move linearly, changing the distance between it and the wall. The multi-stage cylinder 26 adopts an electro-hydraulic composite drive method. Its piston rod receives the command signal from the drone body 1 through the servo controller. The command signal from the drone body 1 is issued through the handle of the drone body 1. When the detection camera 34 needs to adjust the distance between it and the wall, the piston rod of the multi-stage cylinder 26 extends or retracts according to the preset program. The control logic of the servo motor 3 and the adjusting cylinder 35 is the same.

[0026] Furthermore, the movable frame 25 rotates on one side of the movable base plate 22 via the pivot 23 and the rotating rod 24. The movable frame 25 drives the detection camera 34 to rotate synchronously on one side of the movable base plate 22. The movable frame 25 drives the detection camera 34 to rotate to both sides of the bottom of the drone body 1, so as to avoid the detection camera 34 being blocked by the drone body 1 when detecting the corner of the wall, thereby achieving accurate detection of the corner of the external wall. The detection camera 34 adopts a high-resolution infrared camera module, and its image data is transmitted back to the control terminal of the drone body 1 in real time through the built-in wireless transmission module.

[0027] Furthermore, the worm 31 and the worm wheel 32 mesh with each other. The worm 31 and the worm wheel 32 adopt a double-headed helical structure. The servo motor 3 drives the worm 31 to rotate through the output shaft. The worm 31 drives the rotating shaft 23 to rotate on one side of the movable base plate 22 through the worm wheel 32. The rotating shaft 23 drives the movable frame 25 to rotate through the rotating rod 24, thereby realizing the automatic rotation of the movable frame 25 at the bottom of the UAV body 1. After the rotation is completed, the worm 31 automatically locks the worm wheel 32 to prevent the worm wheel 32 from continuing to rotate.

[0028] Furthermore, the end of the movable frame 25 closest to the detection camera 34 is in an "H" shape. The detection camera 34 rotates at the end of the movable frame 25 away from the movable base plate 22 via the adjustment rod 33. The detection camera 34 adjusts its detection angle by rotating the movable frame 25, ensuring that the detection camera 34 can accurately detect corners of different shapes.

[0029] Furthermore, the adjusting cylinder 35 drives the detection camera 34 to rotate at the end of the movable frame 25 away from the movable base plate 22 via the piston rod, and the adjusting cylinder 35 itself rotates on the movable frame 25 during the driving process.

[0030] Working principle: When inspecting the corner of the exterior wall, the output shaft of the servo motor 3 drives the worm gear 31 to rotate. The worm gear 31 drives the rotating shaft 23 to rotate on the movable base plate 22 through the worm wheel 32. The rotating shaft 23 drives the movable frame 25 to rotate through the rotating rod 24. The movable frame 25 drives the inspection camera 34 to rotate to both sides of the drone body 1, avoiding the drone body 1 from obstructing the inspection of the inspection camera 34. In addition, the adjusting cylinder 35 pushes the inspection camera 34 to rotate on the movable frame 25 through the piston rod, realizing the adjustment of the inspection angle of the inspection camera 34, thereby improving the quality of the inspection of exterior wall defects by the inspection camera 34.

[0031] The movable base plate 22 slides on the bottom of the drone body 1 via two sets of guide rails 2 and the multi-stage piston rod of the multi-stage cylinder 26 pushes the movable base plate 22 to slide linearly on the bottom of the drone body 1. The movable base plate 22 drives the detection camera 34 to slide linearly on the bottom of the drone body 1 via the movable frame 25, thereby changing the distance between the detection camera 34 and the wall, ensuring the detection clarity of the detection camera 34 on the wall.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls, characterized in that: The system includes a drone body (1), a detection mechanism located at the bottom of the drone body (1), the detection mechanism including a guide rail (2), the guide rail (2) being fixedly connected to the bottom of the drone body (1), a slider (21) being slidably connected to the surface of the guide rail (2), a movable base plate (22) being fixedly connected to the bottom of the slider (21), a rotating shaft (23) being rotatably connected to the surface of the movable base plate (22), a rotating rod (24) being fixedly connected to the surface of the rotating shaft (23), a movable frame (25) being fixedly connected to the surface of the rotating rod (24), and a multi-stage cylinder (26) being fixedly installed on the drone body (1). The piston rod of the multi-stage cylinder (26) is fixedly connected to the surface of the movable base plate (22). A servo motor (3) is fixedly connected to the bottom of the movable base plate (22). A worm gear (31) is fixedly connected to the output shaft of the servo motor (3). A worm wheel (32) is fixedly connected to the surface of the rotating shaft (23). An adjusting rod (33) is rotatably connected to the surface of the movable frame (25). A detection camera (34) is fixedly mounted on the surface of the adjusting rod (33). An adjusting cylinder (35) is rotatably connected to the surface of the movable frame (25). The piston rod of the adjusting cylinder (35) is rotatably connected to the surface of the detection camera (34).

2. The visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls according to claim 1, characterized in that: Two sets of guide rails (2) and sliders (21) are provided, and the movable base plate (22) slides on the bottom of the UAV body (1) via the two sets of guide rails (2) and sliders (21).

3. The visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls according to claim 1, characterized in that: The multi-stage cylinder (26) pushes the movable base plate (22) to slide linearly on the bottom of the UAV body (1) through the multi-stage piston rod.

4. A visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls according to claim 1, characterized in that: The movable frame (25) rotates on one side of the movable base plate (22) via a pivot (23) and a rotating rod (24), and the movable frame (25) drives the detection camera (34) to rotate synchronously on one side of the movable base plate (22).

5. A visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls according to claim 1, characterized in that: The worm (31) and worm wheel (32) mesh with each other. The servo motor (3) drives the worm (31) to rotate through the output shaft. The worm (31) drives the rotating shaft (23) to rotate on one side of the moving base plate (22) through the worm wheel (32).

6. A visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls according to claim 1, characterized in that: The movable frame (25) is H-shaped at the end near the detection camera (34), and the detection camera (34) rotates at the end of the movable frame (25) away from the movable base plate (22) via the adjusting rod (33).

7. A visual unmanned aerial vehicle (UAV) for detecting defects in exterior walls according to claim 1, characterized in that: The regulating cylinder (35) drives the detection camera (34) to rotate at the end of the movable frame (25) away from the movable base plate (22) via the piston rod, and the regulating cylinder (35) itself rotates on the movable frame (25) during the driving process.

Images