A device for bridge tunnel disease detection

Abstract

The utility model discloses a device for bridge and tunnel disease detection relates to unmanned plane mechanism field, including mounting panel and a plurality of fan spare, be provided with a plurality of culvert through -hole on the mounting panel, and single culvert through -hole is used to install single fan spare, the outside of mounting panel still is provided with a plurality of crawl wheel, and the crawl wheel can be motor -driven and rotate, when the crawl wheel is contacted with the support, one side of fan spare can form the seal with the support, and its other side is communicated with the atmosphere, the utility model discloses a fan spare is arranged in culvert through -hole, not only provides power for the flight state of device, still can cooperate with the crawl wheel, provides adsorption force in the crawl stage of device, makes device can steady flight and crawl, to reach the purpose of improving the movement diversity and the detection comprehensiveness.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) mechanisms, specifically to a device for detecting bridge and tunnel defects. Background Technology

[0002] In the field of engineering structure inspection, especially in the detection of bridge and tunnel defects, existing technologies mainly rely on manual inspection, drone inspection, and contact-type wall-climbing robot inspection. Manual inspection typically uses auxiliary equipment such as bridge inspection vehicles to identify and assess defects on the surface and directly accessible parts of bridges and tunnels through visual inspection, impact testing, and simple measuring tools. Drone inspection leverages its flexibility and non-contact operation characteristics, using sensors such as high-definition cameras and infrared thermal imagers to quickly cover large areas, making it suitable for inspecting the external structure of bridges and tunnels and hard-to-reach high-level areas. Contact-type wall-climbing robots attach to the surface of bridges and tunnels through negative pressure or magnetic adsorption structures, using technologies such as ultrasonic waves and laser scanning for close-range, high-precision inspection, suitable for inspecting the internal structure and hidden parts of bridges and tunnels.

[0003] Existing technologies have significant limitations in bridge and tunnel defect detection. Manual inspection relies on auxiliary equipment such as bridge inspection vehicles, resulting in low efficiency and risks associated with working at heights. While drone inspection enables non-contact operations, it suffers from poor wind resistance, cannot inspect hidden areas, and lacks contact measurement methods. Although wall-climbing robots can perform contact measurements, they generally employ negative pressure or magnetic adsorption structures, leading to problems such as weak intelligent perception capabilities, difficulty in autonomous obstacle avoidance, and limited movement patterns.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this utility model is to provide a device for detecting bridge and tunnel defects. By setting the fan component inside the culvert through hole, it not only provides power for the device's flight, but also cooperates with the crawling wheel to provide suction force during the device's crawling phase, enabling the device to fly and crawl stably. This solves the problem that existing UAV equipment has a single mode of movement and incomplete detection when detecting bridge and tunnel defects.

[0006] This utility model embodiment is achieved through the following technical solution: This utility model embodiment provides a device for detecting bridge and tunnel defects, including a mounting plate and several fan components. The mounting plate is provided with several culvert through holes, and a single culvert through hole is used to install a single fan component. Several crawling wheels are also provided on the outer side of the mounting plate, and the crawling wheels can be driven by a motor to rotate. When the crawler wheel contacts the support, one side of the fan component can form a seal with the support, while the other side is open to the atmosphere.

[0007] Optionally, it also includes a packaging plate, which has several through holes for the fan components to pass through and be exposed. The packaging plate and the mounting plate are detachably packaged to form a cavity. A number of air duct holes are provided on a single duct hole, and the air duct holes are configured to connect the duct hole to the cavity.

[0008] Optionally, the fan component includes a mounting cylinder and a rotating component. The mounting cylinder is a hollow structure with openings at both ends. The rotating component is confined within the hollow structure and can be driven by a motor to rotate within the hollow structure. The mounting cylinder is connected to the duct through hole. When the crawler wheel comes into contact with the support, the mounting cylinder and the support can form a seal.

[0009] Optionally, the outer side of the mounting cylinder is provided with several mounting ear plates, and the duct through hole is provided with several mounting ear grooves. Each mounting ear plate is used to insert into a single mounting ear groove. Both the mounting ear plate and the mounting ear groove are provided with screw holes for bolt through connection.

[0010] Optionally, a sealing rubber is provided on the contact side between the mounting cylinder and the support, and the sealing rubber is configured to form a seal with the support.

[0011] Optionally, the mounting plate is provided with landing gear, which is used to support the device in the landing state.

[0012] Optionally, the landing gear includes a first longitudinal support and a second longitudinal support, the upper end of the first longitudinal support being connected to one side of the mounting plate, and the upper end of the second longitudinal support being connected to the opposite side of the mounting plate. The bottom of the first longitudinal support member is provided with a first transverse member, and the bottom of the second longitudinal support member is provided with a second transverse member. The first transverse member and the second transverse member are on the same horizontal plane, and the horizontal plane is lower than the bottom of the mounting plate.

[0013] Optionally, a reinforcing rod is connected between the first transverse member and the second transverse member.

[0014] Optionally, a controller is installed inside the cavity, and a camera and sensors are installed on the outside of the encapsulation plate.

[0015] Optionally, the mounting plate has a square structure with four through holes, which are located next to the four ends of the square structure. There are four crawling wheels, which are located on the outside of the four ends of the square structure.

[0016] Compared with the prior art, the embodiments of this utility model have the following advantages and beneficial effects: 1. This utility model provides a device for detecting bridge and tunnel defects. A fan component is installed inside a culvert through-hole on a mounting plate, ensuring a tight fit between the fan component and the inner wall of the culvert through-hole for efficient airflow transmission. A crawling wheel is installed on the outer side of the mounting plate, and a motor is connected to the crawling wheel via a transmission mechanism, ensuring the crawling wheel can be driven to rotate. When the crawling wheel contacts the support body, one side of the fan component forms a seal with the support body, while the other side is open to the atmosphere. During operation, the fan component generates negative pressure, allowing the device to stably adhere to the surface of the support body. In flight mode, the fan component generates lift and thrust, enabling the device to fly. The device can switch between flight and crawling modes, allowing for rapid coverage of large areas for detection as well as high-precision detection in concealed locations.

[0017] 2. The detachable encapsulation of the packaging plate and mounting plate in this embodiment not only facilitates the assembly and maintenance of the device, but also provides an optimized airflow path for the fan component by forming a sealed cavity, reducing airflow leakage and improving airflow efficiency. The ingenious design of the air duct holes allows the fan component to effectively draw gas out of the cavity, forming a stable negative pressure environment in conjunction with the duct through-holes. This negative pressure not only provides strong adsorption force for the device in crawling mode, enabling it to stably adhere to the support surface, but also maintains stable movement even on complex curved or inclined surfaces, enhancing the adaptability and reliability of the device. Simultaneously, in non-crawling mode, the packaging plate can be removed to reduce power consumption in flight mode and improve endurance.

[0018] In general, the embodiments of this utility model provide a device for detecting bridge and tunnel defects. By placing the fan component inside the culvert opening, it not only provides power for the device's flight but also cooperates with the crawling wheel to provide suction force during the device's crawling phase, enabling the device to fly and crawl stably, thereby improving the versatility of movement and the comprehensiveness of detection. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A first-view structural schematic diagram of the device for detecting bridge and tunnel defects provided in an embodiment of this utility model; Figure 2 A second-view structural schematic diagram of the device for detecting bridge and tunnel defects provided in an embodiment of this utility model; Figure 3This is a schematic diagram of the structure of the fan component provided in an embodiment of the present utility model; Figure 4 A schematic diagram of the mounting plate structure provided in an embodiment of this utility model; Figure 5 This is a third-view structural diagram of the device for detecting bridge and tunnel defects provided in an embodiment of the present invention.

[0021] The attached diagram shows the markings and corresponding component names: 1-Mounting plate, 2-Fan component, 3-Culvert through hole, 4-Crawling wheel, 5-Encapsulation plate, 6-Through hole, 7-Air duct hole, 8-Mounting cylinder, 9-Rotating component, 10-Mounting ear plate, 11-Mounting ear groove, 12-Screw hole, 13-Sealing rubber, 14-First longitudinal support component, 15-Second longitudinal support component, 16-First transverse component, 17-Second transverse component, 18-Reinforcing rod, 19-Camera, 20-Sensor, 21-Macro HD camera, 22-Depth camera. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "first", "second", "third", etc. are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Example

[0026] Please refer to the reference. Figure 3 , Figure 4 and Figure 5As shown, this utility model embodiment provides a device for detecting bridge and tunnel defects, including a mounting plate 1 and several fan components 2. The mounting plate 1 is provided with several culvert through holes 3, and a single culvert through hole 3 is used to install a single fan component 2. Several crawling wheels 4 are also provided on the outer side of the mounting plate 1. The crawling wheels 4 can be driven by a motor to rotate. When the crawling wheels 4 contact the support body, one side of the fan component 2 can form a seal with the support body, and the other side is open to the atmosphere.

[0027] Specifically, mounting plate 1 is used to fix and support other components, ensuring the structural stability and integrity of the device. Ductwork through-hole 3 is used to install fan component 2, ensuring its normal operation. Fan component 2 provides power in both flight and crawling states. In flight state, fan component 2 provides lift and thrust, enabling the device to fly. In crawling state, fan component 2 forms a seal with the support, generating negative pressure to provide suction force, allowing it to stably adhere to the support surface. Crawling wheels 4 provide mobility during crawling, enabling the device to move smoothly on the support surface. The surface of crawling wheels 4 is designed with anti-slip textures to increase friction with the support, ensuring stable movement.

[0028] The motor drive can be implemented using existing structures, which will not be elaborated here. It should be noted that the support body here refers to the surface or internal structure of the bridge and tunnel structure, as these structures require defect detection. The crawling wheel 4 provides the device's mobility through contact with the support body surface. When the fan component 2 is running, a negative pressure is generated because one side is sealed to the support body and the other side is open to the atmosphere, allowing the device to stably adhere to the support body surface. In this embodiment of the invention, as the device moves on the support body surface, the onboard sensors 20 (such as a high-definition camera 19, a macro high-definition camera 21, a high-definition depth camera 22, an ultrasonic sensor 20, etc.) detect, identify, and assess defects in the support body.

[0029] It should also be noted that the connection method between the fan component 2 and the duct through hole 3 is not limited here. They can be welded or connected in a detachable manner, as long as sufficient connection stability can be achieved. The crawling wheel 4 can be installed on the outside of the mounting plate 1 using existing installation methods such as bearings. The motor is connected to the crawling wheel 4 through a transmission mechanism to ensure that the crawling wheel 4 can be driven to rotate by the motor.

[0030] Furthermore, combined Figure 1 , Figure 2 and Figure 4As shown, this utility model embodiment also includes a packaging plate 5. The packaging plate 5 is provided with a plurality of through holes 6 for the fan component 2 to be exposed through. The packaging plate 5 and the mounting plate 1 are detachably packaged to form a cavity. A plurality of air duct holes 7 are provided on a single duct through hole 3. The air duct holes 7 are configured to connect the duct through hole 3 with the cavity.

[0031] Specifically, the encapsulation plate 5 works in conjunction with the mounting plate 1 to form a sealed cavity, optimizing the airflow path of the fan component 2 and improving airflow efficiency and stability. Simultaneously, the encapsulation plate 5 allows parts of the fan component 2 to pass through and be exposed, ensuring its normal operation. The size and position of the through hole 6 match the dimensions and installation position of the fan component 2, ensuring smooth passage and exposure. The encapsulation plate 5 is detachably connected to the mounting plate 1 (e.g., by bolts), allowing it to be removed in non-creep mode to reduce power consumption in flight mode and improve endurance. Furthermore, the mounting plate 1 and encapsulation plate 5 can be made of carbon fiber composite material to lightweight the fuselage, with the overall fuselage dimensions (length, width, and height) not exceeding 35cm, greatly enhancing the equipment's adaptability to complex environments.

[0032] The air duct 7 connects the cavity to the duct through-hole 3, allowing the fan component 2 to draw gas out of the cavity, thereby creating a stable negative pressure inside the cavity. This provides suction force for the device during the crawling phase, enabling it to adhere stably to the support surface. The number, size, and arrangement of the air duct 7 are not limited here; they can be set according to actual needs, as long as the duct through-hole 3 allows for smooth gas flow within the cavity.

[0033] As a preferred embodiment of this utility model, refer to Figure 3 As shown, the fan component 2 includes a mounting cylinder 8 and a rotating component 9. The mounting cylinder 8 is a hollow structure with openings at both ends. The rotating component 9 is confined within the hollow structure and can be driven by a motor to rotate within the hollow structure. The mounting cylinder 8 is connected to the duct through hole 3. When the crawler wheel 4 contacts the support body, the mounting cylinder 8 and the support body can form a seal.

[0034] Specifically, the openings at both ends of the mounting cylinder 8 are used to accommodate and support the rotating component 9, ensuring smooth airflow. The rotation of the rotating component 9 generates airflow, realizing the function of the fan component 2. In this embodiment of the invention, the function of the fan component 2 is to generate airflow through the rotation of the rotating component 9, enabling the device to fly and crawl. In flight mode, the fan component 2 provides lift and thrust; in crawling mode, the fan component 2 draws out the gas in the cavity through the air duct hole 7, forming a negative pressure and providing adsorption force for the device. To further improve the stability of the negative pressure, a sealing rubber 13 can be provided on the contact side between the mounting cylinder 8 and the support body. The sealing rubber 13 is designed to form a seal in contact with the support body. The high elasticity of the sealing rubber 13 ensures that it can fit tightly against the surface of the support body, forming an effective seal even on complex curved or inclined surfaces, reducing airflow leakage. This not only improves the stability of the negative pressure and enhances the adsorption force of the device in crawling mode, but also improves the adaptability and reliability of the device under different working conditions.

[0035] It should be noted that the rotating component 9 is typically composed of multiple blades. The specific connection structure with the mounting cylinder 8 is not limited here; existing structures can be used to ensure stable rotation of the rotating component 9 within the mounting cylinder 8, thereby ensuring efficient airflow generation during rotation. For example, the blades can be made of lightweight, high-strength materials (such as carbon fiber or aluminum alloy) to reduce the weight of the rotating component 9 and improve motor efficiency. The rotating component 9 can be connected to the motor via a shaft, and the motor's output shaft is mounted at the center of the mounting cylinder 8 via bearings, ensuring smooth rotation of the rotating component 9 within the hollow structure of the mounting cylinder 8.

[0036] In this embodiment of the utility model, more preferably, the mounting cylinder 8 is detachably connected to the duct through hole 3. For example, please refer to... Figure 3 and Figure 4 As shown, a number of mounting ear plates 10 are provided on the outside of the mounting cylinder 8, and a number of mounting ear grooves 11 are provided in the duct through hole 3. Each mounting ear plate 10 is used to insert into a single mounting ear groove 11. Both the mounting ear plate 10 and the mounting ear groove 11 are provided with screw holes 12 for bolt through connection.

[0037] Specifically, the mounting ear plate 10 is used to precisely position the mounting cylinder 8 within the duct through-hole 3. By inserting the mounting ear plate 10 into the mounting ear groove 11, the center position of the mounting cylinder 8 is aligned with the center position of the duct through-hole 3, thereby ensuring the accurate airflow path of the fan component 2. The fit between the mounting ear plate 10 and the duct through-hole 3 increases the connection strength between the mounting cylinder 8 and the mounting plate 1, reduces displacement caused by vibration or external forces, and ensures the stability of the fan component 2 during operation. During assembly, the mounting ear plate 10 is inserted into the mounting ear groove 11 within the duct through-hole 3, ensuring the center position of the mounting cylinder 8 is aligned with the center position of the duct through-hole 3. Then, the mounting cylinder 8 is securely fixed within the duct through-hole 3 by bolts passing through the screw holes 12 on the mounting ear plate 10 and the mounting ear groove 11.

[0038] It should also be noted that in this embodiment of the invention, the shape of the mounting plate 1, the number and position of the duct holes 3, and the number and layout of the crawler wheels 4 are not limited and can be adjusted according to actual needs. For ease of understanding, the mounting plate 1 can be configured as a square structure with four duct holes 3 located beside the four ends of the square structure; four crawler wheels 4 are located on the outer sides of the four ends of the square structure. This layout ensures that the fan components 2 are evenly distributed in the four corners of the device, optimizing the airflow path and overall mechanical performance. The even distribution of the crawler wheels 4 in the four corners of the device provides stable support and mobility.

[0039] Furthermore, in conjunction with reference Figure 1 and Figure 5 As shown, a landing gear is provided on the mounting plate 1. The landing gear is used to support the device in the landing state. Exemplarily, the landing gear includes a first longitudinal support member 14 and a second longitudinal support member 15. The upper end of the first longitudinal support member 14 is connected to one side of the mounting plate 1, and the upper end of the second longitudinal support member 15 is connected to the opposite side of the mounting plate 1. A first transverse member 16 is provided at the bottom of the first longitudinal support member 14, and a second transverse member 17 is provided at the bottom of the second longitudinal support member 15. The first transverse member 16 and the second transverse member 17 are on the same horizontal plane, and this horizontal plane is lower than the bottom of the mounting plate 1. A reinforcing rod 18 is connected between the first transverse member 16 and the second transverse member 17.

[0040] Specifically, the first transverse member 16 is located at the bottom of the first longitudinal support member 14, serving as a lateral support. It is on the same horizontal plane as the second transverse member 17 at the bottom of the second longitudinal support member 15, and this horizontal plane is lower than the bottom of the mounting plate 1. This design ensures that the landing gear provides sufficient support area during descent, while keeping the device's center of gravity low and enhancing stability. The second transverse member 17 is opposite to the first transverse member 16 and also serves as a lateral support. The horizontal arrangement of the two transverse members further enhances the overall stability and support capacity of the landing gear. The reinforcing rod 18 not only strengthens the connection between the transverse members but also improves the overall rigidity of the landing gear, ensuring that the landing gear will not deform or be damaged when subjected to external forces, further enhancing the stability of the device during landing and parking.

[0041] This embodiment of the invention connects the first longitudinal support member 14 and the second longitudinal support member 15 to both sides of the mounting plate 1, and provides a first transverse member 16 and a second transverse member 17 at the bottom. This forms a stable triangular support structure for the landing gear, ensuring stability during landing and improving its adaptability to complex terrain conditions. The bottom horizontal plane of the landing gear is lower than the bottom of the mounting plate 1, preventing damage caused by collisions between the mounting plate 1 and the support structure.

[0042] In a preferred embodiment of this invention, the controller is protected by being housed within the cavity. The outer side of the encapsulation plate 5 houses a camera 19, a macro-HD camera 21, a depth camera 22, and a sensor 20. The camera 19 primarily detects the surface condition of the bridge and tunnel structure, such as cracks, corrosion, and deformation. The depth camera 22, as a global perception structure, is used for autonomous navigation, route planning, 3D mapping, and obstacle avoidance, helping the device move safely in complex environments. The images and video data captured by the camera 19 can be transmitted in real-time to the ground control station (using existing detection technology) via a wireless communication module for remote monitoring and analysis by operators. Furthermore, the macro-HD camera 21, as a defect calculation structure, is responsible for accurately measuring and calculating crack widths during the adsorption and crawling state, and sending the calculation results to a handheld terminal. The sensor 20 detects various physical parameters around the device, such as temperature, humidity, pressure, and vibration, and can be specifically configured according to actual conditions. It can also be combined with existing GPS for positioning. The controller (using existing technology) can fuse the data from the camera 19 and sensor 20 to provide more comprehensive detection results.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and descriptions of well-known components, processing techniques, and processes are omitted to avoid unnecessarily limiting the utility model.

Claims

1. A device for detecting bridge and tunnel defects, characterized in that, It includes a mounting plate (1) and several fan components (2). The mounting plate (1) is provided with several duct through holes (3), and each duct through hole (3) is used to install a single fan component (2). Several crawling wheels (4) are also provided on the outside of the mounting plate (1), and the crawling wheels (4) can be driven by a motor to rotate. When the crawling wheel (4) comes into contact with the support, one side of the fan component (2) can form a seal with the support, and the other side is in communication with the atmosphere.

2. The device for detecting bridge and tunnel defects according to claim 1, characterized in that, It also includes a packaging plate (5), which is provided with several through holes (6) for the fan component (2) to penetrate and be exposed. The packaging plate (5) and the mounting plate (1) are detachably packaged to form a cavity. Several air duct holes (7) are provided on a single duct through hole (3). The air duct holes (7) are configured to connect the duct through hole (3) with the cavity.

3. The device for detecting bridge and tunnel defects according to claim 2, characterized in that, The fan component (2) includes a mounting cylinder (8) and a rotating component (9). The mounting cylinder (8) is a hollow structure with openings at both ends. The rotating component (9) is confined within the hollow structure and can be driven by a motor to rotate within the hollow structure. The mounting cylinder (8) is connected to the duct through hole (3). When the crawling wheel (4) comes into contact with the support, the mounting cylinder (8) and the support can form a seal.

4. The device for detecting bridge and tunnel defects according to claim 3, characterized in that, The mounting cylinder (8) is provided with a plurality of mounting ear plates (10) on its outer side, and a plurality of mounting ear grooves (11) are provided in the duct through hole (3). Each mounting ear plate (10) is used to insert into a single mounting ear groove (11). Both the mounting ear plate (10) and the mounting ear groove (11) are provided with screw holes (12) for bolt through connection.

5. The device for detecting bridge and tunnel defects according to claim 3, characterized in that, The mounting cylinder (8) is provided with a sealing rubber (13) on the contact side with the support body, and the sealing rubber (13) is configured to form a seal with the support body.

6. The device for detecting bridge and tunnel defects according to claim 1, characterized in that, The mounting plate (1) is provided with landing gear, which is used to support the device in the landing state.

7. The device for detecting bridge and tunnel defects according to claim 6, characterized in that, The landing gear includes a first longitudinal support (14) and a second longitudinal support (15). The upper end of the first longitudinal support (14) is connected to one side of the mounting plate (1), and the upper end of the second longitudinal support (15) is connected to the opposite side of the mounting plate (1). The bottom of the first longitudinal support member (14) is provided with a first transverse member (16), and the bottom of the second longitudinal support member (15) is provided with a second transverse member (17). The first transverse member (16) and the second transverse member (17) are on the same horizontal plane, and the horizontal plane is lower than the bottom of the mounting plate (1).

8. The device for detecting bridge and tunnel defects according to claim 7, characterized in that, A reinforcing rod (18) is connected between the first transverse member (16) and the second transverse member (17).

9. The device for detecting bridge and tunnel defects according to claim 2, characterized in that, The cavity is equipped with a controller, and the outer side of the encapsulation plate (5) is equipped with a camera (19) and a sensor (20).

10. The device for detecting bridge and tunnel defects according to claim 1, characterized in that, The mounting plate (1) has a square structure, and four duct through holes (3) are provided, which are located next to the four ends of the square structure respectively; four crawling wheels (4) are provided, which are located on the outside of the four ends of the square structure respectively.

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