Bridge crack detection device based on unmanned aerial vehicle

Abstract

The utility model discloses a bridge crack detection device based on an unmanned aerial vehicle, and relates to the field of detection devices. A bridge crack detection device based on an unmanned aerial vehicle comprises an unmanned aerial vehicle body and further comprises a supporting seesaw arranged below the unmanned aerial vehicle body, and a visual monitoring device is fixedly connected to the supporting seesaw; piston rods are slidably connected to the supporting seesaws, piston cylinders are fixedly connected to the lower portion of the unmanned aerial vehicle body, and the piston rods are slidably connected with the piston cylinders; a spray gun is fixedly connected to the bottom of the supporting seesaw, a compression air cylinder is fixedly connected to the bottom of the unmanned aerial vehicle body, and the compression air cylinder communicates with the piston barrel and the spray gun; when the supporting seesaw rotates, the piston rod does piston motion in the piston barrel, and the piston barrel pressurizes the interior of the compression air cylinder so as to provide spraying power for the spraying gun. According to the utility model, the pitching angle of the visual monitoring device can be adjusted and controlled, spraying marking can be carried out in time when cracks are found, and subsequent maintenance processing is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of detection device technology, specifically, it relates to a bridge crack detection device based on unmanned aerial vehicles (UAVs). Background Technology

[0002] Bridge crack detection devices are a crucial component of bridge structural safety monitoring. Traditional methods rely on manual inspections, which are time-consuming, labor-intensive, and prone to overlooking details. With technological advancements, bridge crack detection devices based on sensors, image processing, and machine learning have emerged. These devices can automatically and efficiently detect cracks on bridge surfaces, and through precise data collection and analysis, promptly identify potential safety hazards. The widespread application of this technology not only improves the accuracy and efficiency of bridge inspections but also provides a scientific basis for bridge maintenance and management.

[0003] With the increasing maturity of drone technology, drones equipped with high-definition cameras and other inspection equipment can be used to take pictures and collect data from all directions of bridges. The inspection efficiency is not only fast, but also ensures the safety of personnel and reduces personnel costs. However, in existing devices, the high-definition camera is usually installed at the bottom of the drone, which can only take pictures from above. When it is necessary to inspect the bottom of the bridge, it will be very difficult. Based on this, this utility model is proposed. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a bridge crack detection device based on UAV that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: It includes a drone body, and further includes: a support rocker plate located below the drone body, with a visual monitoring device fixedly connected to the support rocker plate; a piston rod slidably connected to the support rocker plate, and a piston cylinder fixedly connected to the lower part of the drone body, with the piston rod and piston cylinder slidably connected; a spray gun fixedly connected to the bottom of the support rocker plate, and a compression cylinder fixedly connected to the bottom of the drone body, the compression cylinder being connected to both the piston cylinder and the spray gun; when the support rocker plate rotates, the piston rod performs piston movement within the piston cylinder, and the piston cylinder pressurizes the compression cylinder to provide spraying power to the spray gun.

[0006] Preferably, a fixing rod is fixedly connected to the lower part of the drone body, and the fixing rod is rotatably connected to the support rocker plate.

[0007] Preferably, a servo motor is fixedly connected to the lower part of the drone body, and a threaded rod is fixedly connected to the output end of the servo motor. The threaded rod is connected to a lifting rod via a thread.

[0008] Furthermore, the piston rod and the lifting rod are equipped with rollers, and the support rocker plate is provided with a slide rail, on which the rollers slide.

[0009] Preferably, the piston cylinder has an air inlet, and the air inlet is equipped with a one-way valve to control the one-way entry of external air into the piston cylinder. The piston cylinder is connected to the compression cylinder by an air inlet pipe, and the air inlet pipe is equipped with a one-way valve to control the one-way entry of air from the piston cylinder into the compression cylinder.

[0010] Preferably, the compression cylinder has a pressure relief hole, and the compression cylinder is connected to the spray gun via a hose.

[0011] Preferably, an electric cylinder is fixedly connected to the bottom of the supporting rocker, a push rod is fixedly connected to the output end of the electric cylinder, and a sliding rod is fixedly connected to the push rod.

[0012] Furthermore, a pressure rod is rotatably connected to the support rocker plate, and a sliding groove is provided on the pressure rod, with the sliding rod slidably connected to the sliding groove.

[0013] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0014] 1. This utility model uses a servo motor to drive the threaded rod to rotate, thereby driving the lifting rod to move up and down. The lifting rod drives the support rocker plate to rotate, thereby adjusting and controlling the pitch angle of the visual monitoring device.

[0015] 2. This utility model uses the rotation of the support rocker plate to drive the piston rod to make piston movement in the piston cylinder, thereby realizing the inflation and pressurization of air into the compressed cylinder, thus providing sufficient air pressure for spraying the spray gun at all times, and enabling timely spraying and marking when cracks are found.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the overall structure of a bridge crack detection device based on an unmanned aerial vehicle (UAV) proposed in this utility model.

[0019] Figure 2 This invention presents a schematic diagram of the supporting seesaw portion in a bridge crack detection device based on an unmanned aerial vehicle (UAV). Figure 1 ;

[0020] Figure 3 This utility model proposes a bridge crack detection device based on unmanned aerial vehicles (UAVs). Figure 2Enlarged structural diagram at point A;

[0021] Figure 4 This invention presents a schematic diagram of the supporting seesaw portion in a bridge crack detection device based on an unmanned aerial vehicle (UAV). Figure 2 ;

[0022] Figure 5 This utility model proposes a bridge crack detection device based on unmanned aerial vehicles (UAVs). Figure 4 Enlarged structural diagram at point B;

[0023] Figure 6 This utility model proposes a bridge crack detection device based on unmanned aerial vehicles (UAVs). Figure 4 A magnified structural diagram at point C.

[0024] In the diagram: 1. Main body of the drone; 2. Supporting rocker; 21. Fixed rod; 22. Slide rail; 3. Lifting rod; 31. Threaded rod; 32. Servo motor; 33. Roller; 4. Piston cylinder; 41. Piston rod; 42. Air inlet; 5. Compressed cylinder; 51. Hose; 52. Air inlet pipe; 53. Pressure relief hole; 6. Spray gun; 61. Sliding rod; 62. Pressure rod; 63. Push rod; 64. Electric cylinder; 65. Sliding groove; 7. Visual monitoring device. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0026] Example 1: Refer to Figures 1-6 A bridge crack detection device based on a drone includes a drone body 1, and further includes: a support rocker plate 2 located below the drone body 1, with a visual monitoring device 7 fixedly connected to the support rocker plate 2; a piston rod 41 slidably connected to the support rocker plate 2, and a piston cylinder 4 fixedly connected to the bottom of the drone body 1, with the piston rod 41 slidably connected to the piston cylinder 4; a spray gun 6 fixedly connected to the bottom of the support rocker plate 2, and a compression cylinder 5 fixedly connected to the bottom of the drone body 1, with the compression cylinder 5 communicating with both the piston cylinder 4 and the spray gun 6; when the support rocker plate 2 rotates, the piston rod 41 performs piston movement within the piston cylinder 4, and the piston cylinder 4 pressurizes the compression cylinder 5 to provide spraying power to the spray gun 6.

[0027] In this utility model, the length of the support seesaw 2 can be changed according to different usage conditions. By pushing the support seesaw 2, the support seesaw 2 can be rotated, so that the visual monitoring device 7 at one end of the fixed support seesaw 2 can take pictures at different angles of elevation and depression. When it is necessary to inspect the bottom of the bridge, the drone body 1 can be flown to the bottom of the bridge, and the visual monitoring device 7 can take pictures of the bottom of the bridge at an elevation angle. When it is necessary to inspect the bridge surface, the drone body 1 can be flown to the top of the bridge, and the visual monitoring device 7 can take pictures of the bridge surface at a depression angle.

[0028] The spray gun 6 is installed below the support rocker plate 2 on the same side as the visual monitoring device 7. When the visual monitoring device 7 detects a crack, the spray gun 6 can be controlled to spray a mark on the crack to facilitate subsequent maintenance operations.

[0029] When the angle of the visual monitoring device 7 is adjusted by rotating the support rocker plate 2, it will drive the piston rod 41 to move inside the piston cylinder 4, thereby injecting air into the compressed air cylinder 5. This ensures that the compressed air cylinder 5 can always provide sufficient air pressure to the spray gun 6 to complete the spraying operation.

[0030] Example 2: Refer to Figures 1-6 A bridge crack detection device based on a drone is basically the same as that in Embodiment 1, but with the following additional features: a fixed rod 21 is fixedly connected to the lower part of the drone body 1, and the fixed rod 21 is rotatably connected to the support rocker plate 2. A servo motor 32 is fixedly connected to the lower part of the drone body 1, and a threaded rod 31 is fixedly connected to the output end of the servo motor 32. The threaded rod 31 is threadedly connected to a lifting rod 3. Rollers 33 are provided on the piston rod 41 and the lifting rod 3. A slide rail 22 is provided inside the support rocker plate 2, and the rollers 33 slide on the slide rail 22. An air inlet 42 is provided on the piston cylinder 4, and a one-way valve is provided inside the air inlet 42 to control the external airflow. Air enters the piston cylinder 4 in one direction. An air inlet pipe 52 connects the piston cylinder 4 and the compression cylinder 5. A one-way valve is installed in the air inlet pipe 52 to control the one-way air flow from the piston cylinder 4 into the compression cylinder 5. A pressure relief hole 53 is provided on the compression cylinder 5. The compression cylinder 5 is connected to the spray gun 6 through a hose 51. An electric cylinder 64 is fixedly connected to the bottom of the support rocker plate 2. A push rod 63 is fixedly connected to the output end of the electric cylinder 64. A sliding rod 61 is fixedly connected to the push rod 63. A pressure rod 62 is rotatably connected to the support rocker plate 2. A sliding groove 65 is provided on the pressure rod 62. The sliding rod 61 is slidably connected to the sliding groove 65.

[0031] In this utility model, the fixed rod 21 and the supporting rocker plate 2 are connected by a rotating shaft. The servo motor 32 drives the threaded rod 31 to rotate, thereby controlling the rise and fall of the lifting rod 3. During the rise and fall, the lifting rod 3 will drive the supporting rocker plate 2 to move together, thereby realizing the rotation of the supporting rocker plate 2. The lifting rod 3 slides on the groove opened on the supporting rocker plate 2. The groove of the supporting rocker plate 2 can limit the lifting rod 3 and prevent the lifting rod 3 from rotating with the threaded rod 31. By setting the roller 33 and the slide rail 22, the friction force when the lifting rod 3 and the piston rod 41 slide in the groove on the supporting rocker plate 2 can be reduced.

[0032] When the piston rod 41 moves inside the piston cylinder 4, the air inside the piston cylinder 4 is compressed into the compression cylinder 5. The compression cylinder 5 is equipped with a pressure sensor. When the pressure sensor detects that the pressure inside the compression cylinder 5 is too high, the solenoid valve at the pressure relief hole 53 opens to relieve pressure, thereby ensuring that the air pressure inside the compression cylinder 5 is kept within a safe range.

[0033] like Figure 3 As shown, the handle of the spray gun 6 is controlled by an electric cylinder 64. When the electric cylinder 64 pulls the push rod 63 to the right, the pressure rod 62 squeezes the handle of the spray gun 6, thereby causing the spray gun 6 to spray. When the electric cylinder 64 pushes the push rod 63 to the left, the handle of the spray gun 6 automatically returns to its original position, and the spraying stops.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A drone based bridge crack detection device comprising a drone body (1), characterized in that, Also include: The lower part of the unmanned aerial vehicle body (1) is provided with a support rocker (2), and the support rocker (2) is fixedly connected with a visual monitoring device (7); The support rocker (2) is slidably connected with a piston rod (41), and the lower part of the unmanned aerial vehicle body (1) is fixedly connected with a piston cylinder (4), and the piston rod (41) is slidably connected with the piston cylinder (4); The bottom of the support rocker (2) is fixedly connected with a spray gun (6), and the bottom of the unmanned aerial vehicle body (1) is fixedly connected with a compression cylinder (5), and the compression cylinder (5) is respectively connected with the piston cylinder (4) and the spray gun (6). When the support rocker (2) rotates, the piston rod (41) does piston motion in the piston cylinder (4), and the piston cylinder (4) pressurizes the compression cylinder (5) to provide spraying power for the spray gun (6).

2. The drone-based bridge crack detection apparatus of claim 1, wherein, The lower part of the unmanned aerial vehicle body (1) is fixedly connected with a fixed rod (21), and the fixed rod (21) is rotatably connected with the support rocker (2). 3.The UAV-based bridge crack detection apparatus of claim 1, wherein The lower part of the unmanned aerial vehicle body (1) is fixedly connected with a servo motor (32), and the output end of the servo motor (32) is fixedly connected with a threaded rod (31), and the threaded rod (31) is connected with a lifting rod (3) through threads. 4.The UAV-based bridge crack detection apparatus of claim 3, wherein The piston rod (41) and the lifting rod (3) are provided with a roller (33), and the support rocker (2) is provided with a sliding rail (22), and the roller (33) slides on the sliding rail (22). 5.The UAV-based bridge crack detection apparatus of claim 1, wherein The piston cylinder (4) is provided with an air inlet (42), and the air inlet (42) is provided with a one-way valve for controlling the one-way entry of external air into the piston cylinder (4), and the piston cylinder (4) and the compression cylinder (5) are communicated with an air inlet pipe (52), and the air inlet pipe (52) is provided with a one-way valve for controlling the one-way entry of air in the piston cylinder (4) into the compression cylinder (5). 6.The UAV-based bridge crack detection apparatus of claim 1, wherein The compression cylinder (5) is provided with a pressure relief hole (53), and the compression cylinder (5) and the spray gun (6) are communicated through a hose (51).

7. The drone-based bridge crack detection apparatus of claim 1, wherein, The bottom of the support rocker (2) is fixedly connected with an electric cylinder (64), the output end of the electric cylinder (64) is fixedly connected with a push rod (63), and the push rod (63) is fixedly connected with a sliding rod (61). 8.The UAV-based bridge crack detection apparatus of claim 7, wherein, The support rocker (2) is rotatably connected with a pressing rod (62), the pressing rod (62) is provided with a sliding groove (65), and the sliding rod (61) is slidably connected in the sliding groove (65).

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