Unmanned aerial vehicle carrying galvanizing layer thickness measuring device

Abstract

The present application relates to unmanned aerial vehicle carries galvanized layer thickness measuring device, the bottom plate is detachably installed on the upper surface or the lower surface of the unmanned aerial vehicle through the clamping assembly; the vertical beam is installed on the side of the bottom plate away from the unmanned aerial vehicle; the connecting arm is hinged to the vertical beam through the second rotating shaft, the short edge end of the connecting arm is connected with the bottom plate through the telescopic device, and the long edge end of the connecting arm is provided with the contact plate; the thickness gauge and the permanent magnet are installed on the contact plate; the thickness gauge is carried by the unmanned aerial vehicle, the thickness of the galvanized layer of the power transmission tower material is measured by using the eddy current method, and quantitative evaluation of the corrosion condition of the power transmission tower is realized. The bottom plate can be installed on the upper surface or the lower surface of the unmanned aerial vehicle, so that the rotation angle range of the connecting arm is wider, and multi-angle measurement of different parts / different forms of the power transmission tower is facilitated.

Description

Technical Field

[0001] This invention relates to a device for measuring the thickness of galvanized coatings mounted on an unmanned aerial vehicle (UAV), and belongs to the field of measurement technology. Background Technology

[0002] Drones are currently widely used across various industries, and the assessment of corrosion on power transmission towers primarily relies on intelligent recognition of images captured during drone inspections. However, current image recognition methods cannot objectively and quantitatively assess the corrosion of operating power transmission towers.

[0003] Alternatively, staff can climb to a high place with a thickness gauge to measure the thickness of the coating at the top of the operating tower. The thickness of the galvanized layer of the tower material can be measured by the eddy current method, which can quantitatively assess the corrosion of the tower material. However, there are certain safety risks involved. In addition, there are many towers, and the work efficiency of manually climbing to measure is low.

[0004] For example, in "CN216308884U A thickness measuring device and a thickness measuring drone," the thickness measuring device is installed on a drone. The device includes a connecting rod and a thickness measuring component, with the connecting rod used to connect to the drone. However, the thickness measuring component has a limited detection angle, resulting in a narrow applicable range and inability to adapt to surfaces with different curvatures. Transmission tower materials are classified by form into T-shaped towers, U-shaped towers, portal-shaped towers, V-shaped towers, T-shaped towers, etc., and by shape into angle steel towers and steel pipe towers. Large-angle structures are essential for different forms, and adaptive curvature structures are essential for different shapes. Summary of the Invention

[0005] The purpose of this invention is to provide a galvanized layer thickness measuring device mounted on a drone, so as to solve the problem of the narrow measuring angle of the thickness measuring component mounted on the drone mentioned in the background art.

[0006] The technical solution of the present invention is as follows:

[0007] The drone is equipped with a device for measuring the thickness of the galvanized layer, including:

[0008] A base plate, which is detachably mounted on the upper or lower surface of the drone via a clamping assembly;

[0009] A vertical beam is installed on the side of the base plate away from the drone;

[0010] A connecting arm is hinged to the vertical beam via a second pivot. The short end of the connecting arm is connected to the base plate via a telescopic device, and a contact plate is installed on the long end of the connecting arm.

[0011] A thickness gauge and a permanent magnet are mounted on a contact plate.

[0012] Preferably, there are two sets of vertical beams arranged side by side, and the connecting arm is disposed between the two sets of vertical beams.

[0013] Preferably, the short end of the connecting arm is hinged to one end of the telescopic device via a hinge, and the other end of the telescopic device is hinged to the base plate.

[0014] Preferably, the long end of the connecting arm is connected to the contact plate via a spring joint.

[0015] Preferably, a rotating device is provided between the spring joint and the contact plate.

[0016] Preferably, at least two permanent magnets are distributed at both ends of the contact plate and located on opposite sides of the thickness gauge.

[0017] Preferably, both ends of the contact plate are hinged with corner blocks, and the two corner blocks are connected by an elastic element.

[0018] Preferably, a guide wheel is installed at the free end of the corner block.

[0019] Preferably, the corner block is hinged to the contact plate via a first rotating shaft, and a gear transmission assembly is installed inside the contact plate. The two first rotating shafts are connected by the gear transmission assembly and rotate in opposite directions.

[0020] Preferably, the connecting arm adopts a carbon fiber tube or telescopic tube structure.

[0021] The present invention has the following beneficial effects:

[0022] By using a drone equipped with a thickness gauge and employing the eddy current method, the thickness of the galvanized layer on the transmission tower material is measured, enabling a quantitative assessment of the corrosion status of the transmission tower.

[0023] The base plate can be installed on the upper / lower surface of the drone, which allows for a wider range of rotation angles of the connecting arm, facilitating multi-angle measurements of different parts / shapes of the transmission tower.

[0024] Simultaneously, by utilizing a multi-angle changing mechanism, measurements can be taken on iron towers of different shapes, and by using the spring joint at the front end of the connecting arm, flexible contact measurement of the target can be achieved by the UAV.

[0025] Meanwhile, the corner blocks are connected by elastic elements, allowing the two sets of corner blocks to form different included angles, adapting to different curvatures of transmission tower structures, and enabling measurement of iron towers with different shapes and curvatures. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention in its retracted state, mounted on the upper surface of a drone.

[0027] Figure 2This is a schematic diagram of the structure of the present invention in the extended state installed on the upper surface of the drone;

[0028] Figure 3 This is a schematic diagram of the structure of the present invention installed on the lower surface of the drone in the retracted state.

[0029] Figure 4 This is a schematic diagram of the structure of the present invention in the extended state installed on the lower surface of the drone;

[0030] Figure 5 This is a schematic diagram of the component mating structure on the base plate of the present invention;

[0031] Figure 6 for Figure 5 Front view;

[0032] Figure 7 This is a schematic diagram of the contact plate and its mating components of the present invention;

[0033] Figure 8 This is a schematic diagram of the internal structure of the contact plate of the present invention.

[0034] The reference numerals in the figure are as follows:

[0035] 100. Unmanned Aerial Vehicle (UAV); 1. Base Plate; 2. Vertical Beam; 3. Telescopic Device; 4. Hinge; 5. First Rotating Shaft; 6. Connecting Arm; 7. Second Rotating Shaft; 8. Contact Plate; 81. Gear Transmission Assembly; 9. Rotating Device; 10. Spring Joint; 11. Magnetic Component; 12. Corner Block; 13. Guide Wheel; 14. Thickness Gauge; 15. Elastic Component; 16. Clamping Assembly. Detailed Implementation

[0036] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0037] Example:

[0038] The drone 100 uses the M300 drone, which carries out the entire transportation process, transporting the assembled thickness gauge 14 to the vicinity of the power transmission tower.

[0039] The clamping assembly 16 includes a guide rail, a guide block, and a clamping handle. The guide rail is fixedly installed on the upper and lower surfaces of the UAV 100, the guide block is fixed on the bottom wall of the base plate 1, and the clamping handle is installed on the base plate 1. The guide block and the guide rail slide linearly together.

[0040] like Figure 1-2 As shown, slide the guide block on the bottom wall of the base plate 1 into the guide rail on the upper surface of the drone 100, and then use the clamping handle to fix the guide block on the guide rail, thereby fixing the base plate 1 to the upper surface of the drone 100.

[0041] like Figure 3-4As shown, slide the guide block on the bottom wall of the base plate 1 into the guide rail on the lower surface of the drone 100, and then use the clamping handle to fix the guide block on the guide rail, thereby fixing the base plate 1 to the lower surface of the drone 100.

[0042] like Figure 5-8 As shown, the vertical beam 2 is vertically fixed to the upper surface of the base plate 1 using aluminum profiles. The second rotating shaft 7 is installed between the upper ends of the two sets of vertical beams 2. The connecting arm 6 is sleeved on the outer wall of the second rotating shaft 7 and located between the two sets of vertical beams 2, so that the rotation range of the connecting arm 6 is always between the two sets of vertical beams 2. The shorter side end of the connecting arm 6 near the second rotating shaft 7 is hinged to the upper end of the telescopic device 3 through the hinge 4. The lower end of the telescopic device 3 is hinged to the upper surface of the base plate 1. A spring joint 10 is installed on the longer side end of the connecting arm 6 near the second rotating shaft 7. The other end of the spring joint 10 away from the connecting arm 6 is connected to the contact plate 8 through the rotating device 9.

[0043] The telescopic device 3 uses an electric push rod. The user can remotely control the telescopic device 3 to extend and retract via a remote control handle. The extension and retraction of the telescopic device 3 causes the connecting arm 6 to rotate around the second pivot 7 within a range of 130°. Since the contact plate 8 is located at the long side end of the connecting arm 6, the rotation distance of the contact plate 8 is longer when the connecting arm 6 rotates.

[0044] The spring joint 10 facilitates the omnidirectional rotation of the contact plate 8 relative to the connecting arm 6 within a certain range, making the contact plate 8 more adaptable during the contact with the transmission tower. Since the UAV 100 cannot accurately dock during flight, the spring joint 10 is used to achieve flexible contact with the transmission tower during the measurement process, which can automatically adjust within a certain range and avoid the UAV from going out of control.

[0045] The rotating device 9 can be driven by a motor to rotate the contact plate 8 within a 90° range, so that the contact plate 8 can be adjusted in both horizontal and vertical states; the horizontal contact plate 8 is advantageous for measuring vertical arc-shaped parts to be measured, and the vertical contact plate 8 is advantageous for measuring horizontal arc-shaped parts to be measured.

[0046] The connecting arm 6 is made of carbon fiber tube and has a hollow tube structure, which greatly reduces the weight while maintaining sufficient strength.

[0047] The thickness gauge 14 can be an ultrasonic thickness gauge, a magnetic thickness gauge, or an eddy current thickness gauge. In this embodiment, an eddy current thickness gauge is used. The probe coil of the thickness gauge 14 is installed in the middle of the contact plate 8, and the other parts of the thickness gauge 14 are installed on the base plate 1. There are two permanent magnets in the magnetic component 11, and the two magnetic components 11 are respectively distributed at both ends of the contact plate 8. The two ends of the contact plate 8 are rotatably connected to the first rotating shaft 5. The corner block 12 is fixed to the corresponding first rotating shaft 5. The free end of the corner block 12 is rotatably connected to the guide wheel 13. The elastic component 15 is a tension spring, and its two ends are respectively connected to the free ends of the two sets of corner blocks 12.

[0048] The contact plate 8 is hollow inside and is equipped with a gear transmission group 81. The first rotating shaft 5 is connected to the gear transmission group 81, so that the two sets of first rotating shafts 5 rotate in opposite directions through the gear transmission group 81; thus, the two sets of corner blocks 12 rotate synchronously in opposite directions, so that the probe coil of the thickness gauge 14 is always located in the middle position of the two sets of corner blocks 12, and the probe coil of the thickness gauge 14 is vertically aligned with the part to be measured, which is beneficial to improving the measurement accuracy.

[0049] The corner block 12 has a "U" shaped structure, so that the magnetic component 11 is aligned with the slot of the "U" shaped corner block 12.

[0050] Working principle:

[0051] Depending on the part of the transmission tower to be measured, the base plate 1 is installed on the upper or lower surface of the drone 100, so that the contact plate 8 can rotate within the range of 0°-(+130°) or within the range of 0°-(-130°). The telescopic device 3 drives the connecting arm 6 to rotate, thereby adjusting the angle of the contact plate 8. The drone 100 takes off and flies to the measurement position. First, the guide wheels 13 at the free ends of the two sets of corner blocks 12 abut against the transmission tower to be measured. The two corner blocks 12 rotate outward in opposite directions at the same time. The elastic element 15 is stretched to generate a reverse elastic force. At this time, the magnetic element 11 is magnetically attracted to the transmission tower to be measured. The contact plate 8 is firmly attracted to the transmission tower through the magnetic element 11. Then, the thickness gauge 14 measures the thickness of the galvanized layer of the transmission tower material by eddy current method, thereby realizing a quantitative assessment of the corrosion of the transmission tower.

[0052] The magnetic component 11 can be an electromagnet. When it is necessary to firmly attach the contact plate 8 to the transmission tower, the magnetic component 11 is energized and generates magnetism. When the drone 100 needs to fly away from the transmission tower, the magnetic component 11 is de-energized and loses its magnetism. The magnetic component 11 can also be a permanent magnet.

[0053] The two sets of corner blocks 12 are driven by the elastic force of the elastic element 15, so that the corner blocks 12 tend to move closer to each other under normal conditions. The two sets of corner blocks 12 can form an angle of any angle, which is beneficial to adapt to the surface to be measured with different curvatures.

[0054] To enable better flight attitude for the drone 100 and prevent components on the base plate 1 from affecting its flight attitude, the connecting arm 6 can be rotated to... Figure 1 , Figure 4 In this state, the connecting arm 6 exerts less wind resistance on the drone 100, which is beneficial for flight. Alternatively, the connecting arm 6 can be a telescopic rod structure (electric push rod), which can be retracted during the flight of the drone 100.

[0055] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A drone equipped with a zinc plating thickness measuring device, characterized in that: include: The base plate (1) is detachably mounted on the upper or lower surface of the drone (100) via a clamping assembly (16); A vertical beam (2) is installed on the side of the base plate (1) away from the UAV (100); Connecting arm (6), the connecting arm (6) is hinged to the vertical beam (2) through the second rotating shaft (7), the short side end of the connecting arm (6) is connected to the base plate (1) through the telescopic device (3), and the long side end of the connecting arm (6) is equipped with a contact plate (8). A thickness gauge (14) and a permanent magnet (11) are mounted on a contact plate (8); The long side end of the connecting arm (6) is connected to the contact plate (8) via a spring joint (10); At least two permanent magnets (11) are distributed at both ends of the contact plate (8) and located on opposite sides of the thickness gauge (14); Both ends of the contact plate (8) are hinged with corner blocks (12), and the two corner blocks (12) are connected by an elastic element (15); The corner block (12) is hinged to the contact plate (8) via the first rotating shaft (5). A gear transmission group (81) is installed inside the contact plate (8). The two first rotating shafts (5) are connected by the gear transmission group (81) and rotate in opposite directions. The short end of the connecting arm (6) is hinged to one end of the telescopic device (3) via a hinge (4), and the other end of the telescopic device (3) is hinged to the base plate (1). A rotating device (9) is provided between the spring joint (10) and the contact plate (8).

2. The galvanized layer thickness measuring device mounted on the UAV as described in claim 1, characterized in that: The vertical beams (2) are arranged in two sets side by side, and the connecting arm (6) is arranged between the two sets of vertical beams (2).

3. The galvanized layer thickness measuring device mounted on the UAV as described in claim 1, characterized in that: The corner block (12) has a guide wheel (13) installed at its free end.

4. The galvanized layer thickness measuring device mounted on the UAV as described in claim 1, characterized in that: The connecting arm (6) adopts a carbon fiber tube or telescopic tube structure.

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