Bridge detection flaw detection device based on unmanned aerial vehicle

Abstract

The invention discloses a bridge detection flaw detection device based on an unmanned aerial vehicle, and relates to the technical field of bridge detection flaw detection. A bridge detection flaw detection device based on an unmanned aerial vehicle comprises an unmanned aerial vehicle body and further comprises a connecting plate fixedly installed on the unmanned aerial vehicle body, an installation ring is rotationally arranged on the connecting plate, and a vehicle body driving the installation ring to rotate around the unmanned aerial vehicle body is arranged on the connecting plate; the flaw detection mounting pipe is fixedly mounted on the mounting ring; the driving part drives the mounting ring to rotate, and the mounting ring drives the flaw detection mounting pipe to drive the flaw detection head to rotate around the unmanned aerial vehicle body, so that the inclination angle of the flaw detection head is adjusted under the condition that the unmanned aerial vehicle body is kept balanced, and the unmanned aerial vehicle body can accurately detect the flaw under the condition that the flight attitude is not changed. And different parts of the bridge are comprehensively detected, so that the detection efficiency is improved, and the operation difficulty and the falling risk of the unmanned aerial vehicle are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge inspection and flaw detection, and specifically relates to a bridge inspection and flaw detection device based on an unmanned aerial vehicle (UAV). Background Art

[0002] During the long-term operation and service of a bridge, due to the combined action of vehicle loads, seismic loads, and environmental factors, the bridge often undergoes deformation and damage, resulting in hazards. Therefore, it is necessary to regularly perform flaw detection on the bridge;

[0003] In the prior art, the authorized announcement number: CN205281263U, the authorized announcement date: June 1, 2016, and the name is a bridge flaw detection device based on an unmanned aerial vehicle, which includes a quadrotor UAV body and a handheld remote controller for wirelessly controlling the flight of the quadrotor UAV body. A first camera and a first fill light are vertically installed at the top of the bracket of the quadrotor UAV body, a second camera and a second fill light are horizontally installed at the top of the bracket of the quadrotor UAV body, an electronic circuit board is arranged inside the quadrotor UAV body, and a first controller, a power supply battery, a positioning sensor, a first data storage card, a first wireless transceiver, a microwave sensor, a light sensor, and a control indicator light are integrated on the electronic circuit board. A second controller, a second data storage card, a communication interface circuit, a second wireless transceiver, and a display are arranged inside the handheld remote controller. The present utility model has novel design, simple structure, flexible data acquisition, and uses two sets of cameras arranged perpendicular to each other to obtain image information, which is stable, reliable, convenient to control, and has strong practicability;

[0004] Although the above patent can solve the limitations of the detection vehicle, during the flaw detection process, it is necessary to adjust the tilt angle of the UAV to change the angle of the flaw detection end in order to perform flaw detection on different parts of the bridge. However, the adjustment angle of the UAV is limited. When the adjustment angle of the UAV is excessive, it is easy to cause the UAV to fall and be damaged, resulting in inconvenient flaw detection for local angles. Therefore, in order to provide more accurate bridge flaw detection data, a bridge inspection and flaw detection device based on an unmanned aerial vehicle is proposed here. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a bridge inspection and flaw detection device based on an unmanned aerial vehicle that can overcome the above problems or at least partially solve the above problems.

[0006] To solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0007] An unmanned aerial vehicle (UAV)-based bridge inspection and flaw detection device, including a UAV body, further comprising: a connecting plate fixedly installed on the UAV body, an installation ring rotatably arranged on the connecting plate, and a driving part arranged on the connecting plate to drive the installation ring to rotate around the body of the UAV; a flaw detection installation pipe fixedly installed on the installation ring, and a flaw detector fixedly installed on the flaw detection installation pipe, and the flaw detector rotates with the installation ring to change the flaw detection angle.

[0008] As a preferred embodiment of the present invention: the connecting plate includes a main board, and rotating shafts are rotatably connected to both ends of the main board.

[0009] As a preferred embodiment of the present invention: the installation ring includes a first half ring and a second half ring, the first half ring and the second half ring are fixed by bolts, and the inner side of the installation ring is in contact with the rotating shaft.

[0010] As a preferred embodiment of the present invention: grooves are provided on both the first half ring and the second half ring, and half-tooth rings are fixedly installed in the two grooves, and the two half-tooth rings form a complete tooth ring.

[0011] As a preferred embodiment of the present invention: the driving part includes a motor fixedly installed on the main board, a driving gear is fixedly installed at the output end of the motor, and the driving gear meshes with the tooth ring.

[0012] As a preferred embodiment of the present invention: the flaw detection installation pipe includes an outer pipe fixedly connected to the installation ring, an inner pipe is slidably installed in the outer pipe, a sealing plate is fixedly installed at one end of the inner pipe extending into the outer pipe, a spring is sleeved on the inner pipe, and both ends of the spring are in contact connection with the outer pipe and the inner pipe respectively.

[0013] As a preferred embodiment of the present invention: an air pump is fixedly installed on the outer pipe, the output end of the air pump is communicated with the inside of the outer pipe through an air pipe, and an exhaust control valve is arranged on the outer pipe.

[0014] As a preferred embodiment of the present invention: a battery pack and a main unit are fixedly installed in the inner pipe, and the battery pack supplies power to the main unit and the flaw detector.

[0015] After adopting the above technical solutions, the present invention has the following beneficial effects compared with the prior art: the present invention drives the installation ring to rotate through the driving part, and the installation ring drives the flaw detector to rotate around the UAV body by driving the flaw detection installation pipe, so as to adjust the inclination angle of the flaw detector while the UAV body maintains balance, enabling the UAV body to comprehensively detect different parts of the bridge without changing the flight attitude, which not only improves the detection efficiency, but also reduces the operation difficulty and falling risk of the UAV.

[0016] The following further describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings. Description of the Drawings

[0017] In the drawings:

[0018] Figure 1 is a schematic structural diagram of a bridge detection and flaw detection device based on a drone proposed by the present invention;

[0019] Figure 2 is a schematic structural diagram of the driving part of a bridge detection and flaw detection device based on a drone proposed by the present invention;

[0020] Figure 3 is a cross-sectional view of the flaw detection installation pipe of a bridge detection and flaw detection device based on a drone proposed by the present invention;

[0021] Figure 4 is a schematic structural diagram of the installation ring of a bridge detection and flaw detection device based on a drone proposed by the present invention;

[0022] Figure 5 is a schematic structural diagram of the connecting plate of a bridge detection and flaw detection device based on a drone proposed by the present invention.

[0023] In the figure: 1, drone body; 2, connecting plate; 21, main board; 22, rotating shaft; 3, installation ring; 31, first half ring; 32, second half ring; 33, bolt; 34, half tooth ring; 4, flaw detection installation pipe; 41, outer pipe; 42, inner pipe; 43, spring; 44, sealing plate; 45, exhaust control valve; 5, flaw detection head; 6, motor; 7, driving gear; 8, battery pack; 9, main unit; 10, air pump. Specific Embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0025] Embodiment: Refer to Figures 1 - 5 , a bridge detection and flaw detection device based on a drone, including a drone body 1, and further including: a connecting plate 2 fixedly installed on the drone body 1, an installation ring 3 rotatably arranged on the connecting plate 2, and a driving mechanism arranged on the connecting plate 2 to drive the installation ring 3 to rotate around the body of the drone body 1; a flaw detection installation pipe 4 fixedly installed on the installation ring 3, and a flaw detection head 5 fixedly installed on the flaw detection installation pipe 4, and the flaw detection head 5 rotates with the installation ring 3 to change the flaw detection angle.

[0026] Among them, the flaw detector head 5 is any one or a combination of flaw detectors such as an ultrasonic flaw detector, a visual flaw detector, and an infrared flaw detector. In this embodiment, an ultrasonic flaw detector can be preferably used.

[0027] In this embodiment, the driving part drives the mounting ring 3 to rotate. The mounting ring 3 drives the flaw detector head 5 to rotate around the UAV body 1 through the flaw detector mounting tube 4, so as to adjust the inclination angle of the flaw detector head 5 while the UAV body 1 maintains balance, enabling the UAV body 1 to comprehensively detect different parts of the bridge without changing the flight attitude, which not only improves the detection efficiency but also reduces the operation difficulty and falling risk of the UAV.

[0028] Refer to Figure 2 、 Figure 4 and Figure 5 , the connecting plate 2 includes a main board 21. Rotating shafts 22 are rotatably connected to both ends of the main board 21. The mounting ring 3 includes a first half-ring 31 and a second half-ring 32. The first half-ring 31 and the second half-ring 32 are fixed by bolts 33. The inner side of the mounting ring 3 is in contact with the rotating shafts 22. Among them, when the mounting ring 3 rotates, the rotating shafts 22 can reduce the friction between the mounting ring 3 and the connecting plate 2, improve the stability of adjusting the angle of the flaw detector head 5, and the design of the rotating shafts 22 and the mounting ring 3 helps to extend the service life of the entire flaw detection device by reducing friction and wear.

[0029] Refer to Figure 2 and Figure 4 , grooves are provided on both the first half-ring 31 and the second half-ring 32. Semi-tooth rings 34 are fixedly installed in the two groups of grooves. The two groups of semi-tooth rings 34 form a complete tooth ring. The driving part includes a motor 6 fixedly installed on the main board 21. A driving gear 7 is fixedly installed at the output end of the motor 6. The driving gear 7 meshes with the tooth ring. When the motor 6 is started, the motor 6 rotates the driving gear 7, and the driving gear 7 drives the tooth ring to rotate, thereby driving the mounting ring 3 to rotate and further changing the flaw detection angle of the flaw detector head 5.

[0030] Refer to Figures 1 - 3 , the flaw detector mounting tube 4 includes an outer tube 41 fixedly connected to the mounting ring 3. An inner tube 42 is slidably installed in the outer tube 41. A sealing plate 44 is fixedly installed at one end of the inner tube 42 extending into the outer tube 41. A spring 43 is sleeved on the inner tube 42. The two ends of the spring 43 are respectively in contact with the outer tube 41 and the inner tube 42. An air pump 10 is fixedly installed on the outer tube 41. The output end of the air pump 10 is communicated with the inside of the outer tube 41 through an air pipe. An exhaust control valve 45 is provided on the outer tube 41. A battery pack 8 and a main unit 9 are fixedly installed in the inner tube 42. The battery pack 8 supplies power to the main unit 9 and the flaw detector head 5.

[0031] The staff can operate the host 9 through a remote control and a wireless device, and use the host 9 to control the motor 6, the air pump 10, the exhaust control valve 45 and the flaw detector head 5 to work.

[0032] The air pump 10 blows air into the outer tube 41, and uses the air pressure to drive the inner tube 42 to extend out of the outer tube 41, so that the flaw detector head 5 protrudes beyond the wing range of the UAV body 1, thereby making the flaw detector head 5 closer to the bridge to be inspected, and improving the flaw detection accuracy and accuracy.

[0033] To sum up, the device has the following advantages:

[0034] The device is fixedly installed on the UAV body 1, and uses the flight ability of the UAV for bridge detection, without manual climbing, which greatly improves the detection efficiency and safety.

[0035] By driving the mounting ring 3 to rotate around the UAV body 1, the flaw detector head 5 can follow and change the flaw detection angle, so that the UAV can comprehensively detect different parts of the bridge without changing the flight attitude, reducing the operation difficulty and the falling risk.

[0036] The flaw detector head 5 can be any one or a combination of an ultrasonic flaw detector, a visual flaw detector, an infrared flaw detector, etc., to meet different detection requirements, and the ultrasonic flaw detector is preferably an implementation mode.

[0037] The connecting plate 2 is connected to the mounting ring 3 through a rotating shaft 22, reducing the friction force, improving the stability of adjusting the angle of the flaw detector head 5, helping to extend the service life of the device, and the mounting ring 3 is composed of detachable half rings, which is convenient for maintenance and replacement.

[0038] The motor 6 is meshed with the toothed ring through the driving gear 7 to realize the precise rotation of the mounting ring 3, thereby changing the angle of the flaw detector head 5, simplifying the operation process and improving the automation level.

[0039] The flaw detection mounting tube 4 adopts a sliding design of an outer tube 41 and an inner tube 42, and the air pump 10 provides air pressure to drive the inner tube 42 to extend, so that the flaw detector head 5 is closer to the bridge surface, improving the flaw detection accuracy. At the same time, the spring 43 ensures the stable return of the inner tube 42.

[0040] A battery pack 8 and a host 9 are fixedly installed in the inner tube 42. The battery pack 8 supplies power to the host 9 and the flaw detector head 5. The staff can operate the host 9 through a remote control and a wireless device to achieve remote control and monitoring.

[0041] The above are only the preferred embodiments of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art of the present invention can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical content prompted above within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the present invention's solution.

Claims

1. A bridge inspection and flaw detection device based on an unmanned aerial vehicle, comprising an unmanned aerial vehicle body (1), characterized in that: Also includes: A connecting plate (2) fixedly mounted on the drone body (1), a mounting ring (3) being rotatably mounted on the connecting plate (2), and a driving mounting ring (3) being mounted on the connecting plate (2) to rotate around the drone body (1); The flaw detection installation tube (4) is fixedly installed on the installation ring (3), and a flaw detection head (5) is fixedly installed on the flaw detection installation tube (4). The flaw detection head (5) rotates with the installation ring (3) to change the flaw detection angle.

2. The bridge inspection and flaw detection device based on drone according to claim 1 is characterized in that: The connecting plate (2) comprises a main plate (21), and both ends of the main plate (21) are rotatably connected to a rotating shaft (22).

3. The bridge inspection and flaw detection device based on drone according to claim 2 is characterized in that: The mounting ring (3) comprises a first half ring (31) and a second half ring (32); the first half ring (31) and the second half ring (32) are fixed by bolts (33); and the inner side of the mounting ring (3) is in contact with the rotating shaft (22).

4. The bridge inspection and flaw detection device based on drone according to claim 3 is characterized in that: The first half ring (31) and the second half ring (32) are both provided with grooves, and half toothed rings (34) are fixedly installed in the two groups of grooves, and the two groups of half toothed rings (34) form a complete toothed ring.

5. The bridge inspection and flaw detection device based on drone according to claim 4 is characterized in that: The driving unit comprises a motor (6) fixedly mounted on the main board (21), a driving gear (7) fixedly mounted on the output end of the motor (6), and the driving gear (7) meshes with a gear ring.

6. The bridge inspection and flaw detection device based on drone according to claim 1 is characterized in that: The flaw detection installation tube (4) comprises an outer tube (41) fixedly connected to the installation ring (3), an inner tube (42) is slidably installed in the outer tube (41), a sealing plate (44) is fixedly installed on one end of the inner tube (42) extending into the outer tube (41), a spring (43) is sleeved on the inner tube (42), and two ends of the spring (43) are respectively in contact with the outer tube (41) and the inner tube (42).

7. The bridge inspection and flaw detection device based on drone according to claim 6 is characterized in that: An air pump (10) is fixedly mounted on the outer tube (41); an output end of the air pump (10) is connected to the interior of the outer tube (41) via an air pipe; and an exhaust control valve (45) is provided on the outer tube (41).

8. The bridge inspection and flaw detection device based on drone according to claim 6 is characterized in that: A battery pack (8) and a main machine (9) are fixedly installed in the inner tube (42), and the battery pack (8) supplies power to the main machine (9) and the flaw detection head (5).

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