Device for detecting defects of concrete-filled steel tube arch structure

Abstract

The utility model relates to the technical field of engineering quality detection, in particular to a device for detecting defects of a concrete-filled steel tube arch structure, which comprises a magnetic attraction wheel set, a machine body, a camera and a detection assembly, the magnetic attraction wheel set is connected to one side of the machine body, and the detection assembly is connected to the machine body. The detection assembly is used for detecting the concrete-filled steel tube arch structure; the camera is electrically connected with a wireless transmission device, and the wireless transmission device can receive and send out images shot by the camera. Through the arrangement, the capacity of the device for adapting to the curved surface is improved, the device can feed back working conditions, and the capacity of the device for adapting to a complex steel tube concrete arch structure is further improved.

Description

Technical Field

[0001] This utility model relates to the field of engineering quality testing technology, and in particular to a device for detecting defects in steel-concrete composite arch structures. Background Technology

[0002] In the field of steel-concrete composite arch structure inspection, traditional inspection methods mainly rely on manual operation. Steel-concrete composite arches are characterized by their long length, curved surfaces to be inspected, overall curved structure, large component size, and numerous cross-connection points. Therefore, manual operation suffers from problems such as low efficiency, high inspection difficulty, and poor operational safety.

[0003] Chinese patent application CN117147689A discloses an intelligent device system for positioning the void in a steel-concrete composite arch structure. It can realize the vibration and impact detection and intelligent positioning of the machine. However, its moving device cannot adapt to the steel-concrete composite arch with curved surfaces and many intersecting connections. Furthermore, when facing a steel-concrete composite arch with a complex structure, it is difficult to provide feedback on the walking conditions, which further reduces its ability to adapt to the detection conditions. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing mobile devices that cannot adapt to steel-concrete composite arches with curved surfaces and numerous intersecting connections, and that make it difficult to provide feedback on the walking conditions when facing complex steel-concrete composite arches, further reducing their ability to adapt to testing conditions. This invention provides a device for detecting structural defects in steel-concrete composite arches.

[0005] This utility model provides a device for detecting defects in steel-concrete composite arch structures, comprising: a magnetic suction wheel assembly, a machine body, a camera, and a detection component. The magnetic suction wheel assembly is connected to one side of the machine body, and the detection component is connected to the machine body. The detection component is used to detect steel-concrete composite arch structures.

[0006] The magnetic wheel assembly includes a frame assembly and two drive wheel assemblies. The magnetic wheel assembly is connected to the machine body through the frame assembly. The drive wheel assembly includes magnetic rollers. The magnetic wheel assembly can be attracted to the surface to be inspected by the magnetic rollers. One drive wheel assembly is provided on each side of the frame assembly so that the magnetic rollers are arranged opposite to each other. The drive wheel assembly is hinged to the frame assembly.

[0007] The camera is electrically connected to a wireless transmission device, which is capable of receiving and transmitting images captured by the camera.

[0008] The magnetic rollers in the magnetic roller assembly move the device by rotating. These rollers can adhere to the steel-concrete arch structure being inspected, improving the device's stability during operation. The magnetic rollers in the two drive wheel assemblies of the magnetic roller assembly adopt a hinged structure with an adjustable included angle. When encountering curved surfaces (such as arched surfaces), the included angle of the two magnetic rollers can change according to the curvature of the contact surfaces, ensuring the device always conforms to surfaces with different curvatures. The intersections of steel-concrete arch structures often involve multi-directional curved surfaces. The hinged drive wheel assembly can adapt to different contact surfaces; for example, at the intersection of steel pipes, continuous adsorption is achieved by changing the angle of the wheel assembly, reducing the likelihood of jamming or detachment caused by rigid connections in traditional wheeled devices. By installing a camera, the device can capture real-time images of the travel path and surrounding environment, transmitting the images wirelessly to a remote control terminal. Operators can then dynamically adjust the movement path to avoid obstacles (such as welds, bolts, and other intersections) or choose appropriate paths to traverse obstacles.

[0009] The detection component can be an ultrasonic detection component or a percussion detection component, etc. An ultrasonic detection component can detect whether the target object has internal damage or hollowness by emitting ultrasonic waves and receiving the ultrasonic waves reflected by the target object. A percussion detection component can detect whether the target object has internal hollowness by striking it and collecting and analyzing the sound emitted. Different detection components can be selected according to actual working needs; preferably, a percussion detection component is used.

[0010] When the detection component is a tapping detection component, the target object to be detected can be tapped using a tapping tool such as a hammer or a tapping rod to obtain sound information.

[0011] The frame assembly can be of any shape, such as an inverted T-shaped structure or a rectangle. When the frame assembly is an inverted T-shaped structure, the drive wheel assembly is connected to both ends of the component arranged laterally in the inverted T-shaped structure. When the frame assembly is a rectangle, the drive wheel assembly is arranged at both ends of the rectangle along the length of the rectangle.

[0012] This configuration enhances the device's ability to adapt to curved surfaces and enables it to provide feedback on operating conditions, further improving its ability to adapt to complex steel-concrete composite arch structures.

[0013] The device body is also equipped with a host computer and a slave computer. The camera is electrically connected to the wireless transmission device through the host computer. The host computer is electrically connected to the detection component. The host computer is used to receive and process the information collected by the camera and the detection component and to transmit information.

[0014] The host computer processes the information collected by the camera and detection components using existing technologies, such as: using libraries like OpenCV or Halcon for image preprocessing, then combining the information collected by the camera and detection components to provide comprehensive environmental information, and using machine learning, deep learning, or traditional algorithms to perform data analysis on the above information. Based on the analysis results, path planning algorithms (such as A* or Dijkstra) or reinforcement learning are used to generate movement strategies.

[0015] The host computer and the slave computer are electrically connected. The slave computer is electrically connected to the magnetic roller assembly and the detection component. The slave computer can control the movement of the magnetic roller and the striking component by receiving information from the host computer.

[0016] By having the host computer process the information collected by the camera and detection components, and generate movement strategies through algorithmic analysis, while the slave computer directly controls the movement of the magnetic roller and the tapping component, this hierarchical control architecture improves response speed and enables the device to quickly adapt to dynamically changing detection environments.

[0017] The frame assembly includes a first connecting frame, a second connecting frame, a third connecting frame, and a first spring. One side of the first connecting frame is connected to the magnetic roller, and the other side is hinged to the second connecting frame. The side of the second connecting frame away from the first connecting frame is hinged to the third connecting frame. The two ends of the first spring are respectively hinged to the first connecting frame and the third connecting frame. The frame assembly is connected to the machine body through the third connecting frame.

[0018] The host computer and the slave computer are electrically connected. The slave computer is electrically connected to the magnetic roller assembly and the detection component, respectively. The slave computer can control the start and stop of the magnetic roller assembly and the start and stop of the detection component by receiving information sent by the host computer.

[0019] The start of the magnetic roller assembly means that the magnetic rollers rotate and the stop means that the magnetic rollers stop rotating. The start of the detection component means that the detection component starts working and the stop means that the detection component stops working.

[0020] By connecting the first spring to the first connecting frame and the third connecting frame, the ability to absorb vibrations and shocks from the drive wheel assembly can be improved, the vibration transmitted to the machine body can be reduced, and thus the stability of the device can be improved.

[0021] By using hinged designs between the first, second, and third connecting frames, a multi-level hinged structure is formed. Compared to a single hinged structure, this improves the frame assembly's ability to flexibly adapt to uneven ground, further enhancing shock absorption. This design provides multiple degrees of freedom, allowing the drive wheel assembly to better conform to the surface to be inspected, thus improving the device's stability. The hinged design of multiple connecting frames distributes external forces to different connection points, preventing excessive stress on any single component and thereby improving the overall strength and durability of the device.

[0022] The detection component includes a striking component for striking the surface to be detected. The striking component includes a second driving device and a striking rod. The second driving device is connected to the striking rod. The lower computer drives the striking rod to strike the surface to be detected through the second driving device.

[0023] The first drive device and the second drive device can be respectively configured as a motor, electric motor or small engine, etc., preferably an electric motor.

[0024] The detection component also includes a detection information acquisition component, which is used to collect the sound generated when the striking rod strikes the surface to be detected.

[0025] The detection information acquisition component includes a sound acquisition microphone or a vibration sensor, preferably a sound acquisition microphone.

[0026] The striking assembly is also connected to a ratchet assembly. The second drive device and the striking rod are connected by a crank-connecting rod mechanism. The ratchet assembly is disposed between the second drive device and the crank-connecting rod mechanism. The ratchet assembly is used to limit the unidirectional rotation of the crank-connecting rod mechanism. The striking assembly also includes a second spring and a limiting plate. The second spring is sleeved on the striking rod. The lower end of the second spring is connected to the striking rod. The striking rod can drive the second spring to extend and retract. The limiting plate is provided at both ends of the second spring.

[0027] After one strike, if the striking rod descends a second time, the ratchet assembly limits the crank-connecting rod mechanism to rotate in one direction to prevent the striking rod from striking a second time, thereby improving detection efficiency and accuracy of each test, reducing interference caused by a second strike. The one-way transmission allows the torque output by the motor to be effectively converted into striking kinetic energy, which improves energy utilization compared to a two-way structure.

[0028] The second spring is used for energy storage. The second drive device drives the striking rod to move vertically upward. The second spring is compressed by the striking rod, storing elastic potential energy in the compressed state. When released, the energy can be quickly converted into the kinetic energy of the striking rod, thereby increasing the initial velocity of the striking rod. A higher initial velocity means that the striking rod can contact the detection surface with a greater impact force, enabling the device to meet the needs of the detection work. The elastic characteristics of the second spring allow the striking rod to rebound quickly and prepare for the next strike, increasing the frequency and efficiency of the strikes. Furthermore, the preload of the second spring assists the movement of the striking rod, reducing the load on the second drive device and allowing the motor to drive the striking component more easily. The preload of the second spring increases the probability of consistency in the initial velocity and force of each strike, improving the reliability of the detection results.

[0029] The limiting plate restricts the extension range of the second spring, preventing excessive stretching of the second spring or overload of the striking rod movement, thus protecting the component structure.

[0030] The ratchet assembly includes a pawl, a ratchet body, and a pawl spring. The ratchet body is connected to a second drive device. The pawl includes a bent end and a connecting end. The bent end can contact the ratchet body, and the connecting end is rotatably disposed. The pawl can rotate around the connecting end. The pawl is used to limit the unidirectional rotation of the ratchet body. One end of the pawl spring is fixedly disposed, and the other end is connected to the pawl.

[0031] The ratchet and pawl engagement design allows the return inertial kinetic energy to be stored in the pawl spring, enabling energy recycling and improving energy utilization efficiency.

[0032] The crank-connecting rod mechanism includes a drive shaft, a driving push rod, a driven push rod, and a driven connecting rod. The second drive device is connected to the crank-connecting rod mechanism via the drive shaft. One end of the driving push rod is connected to the drive shaft, and the other end is connected to the driven push rod. The end of the driven push rod away from the driving push rod is movably connected to the driven connecting rod. The striking rod is connected to the crank-connecting rod mechanism via the driven connecting rod.

[0033] The rigid connection of the drive shaft, driving push rod, driven push rod, and driven connecting rod converts the rotational motion of the second drive device into the linear motion of the striking rod with minimal energy loss. The crank-connecting rod mechanism amplifies the small torque of the motor into a large impact force of the striking rod, improving energy utilization efficiency. The geometry of the crank-connecting rod mechanism determines the motion trajectory of the striking rod, enabling precise reciprocating linear motion and increasing the probability of consistent force and position in each strike. By adjusting the length of the crank or the angle of the connecting rod, the stroke and force of the striking rod can be flexibly changed to adapt to different testing requirements.

[0034] The machine body is equipped with a magnetic suction component, an omnidirectional wheel, and a power supply device. The magnetic suction component and the omnidirectional wheel are both located on the bottom surface of the machine body. The magnetic suction component is used to attach to the surface to be tested. The omnidirectional wheel is located on the rear side of the machine body, and the magnetic suction wheel is located on the front side of the machine body.

[0035] The front side of the fuselage refers to the side that is at the very front of the device along the direction of travel when it moves forward, and the rear side refers to the side of the fuselage that is opposite to the front side.

[0036] The omnidirectional wheels allow for movement in any direction (including lateral, longitudinal, and rotational), greatly improving the flexibility and maneuverability of the fuselage. At the same time, placing the omnidirectional wheels on the rear side of the fuselage and the magnetic rollers on the front side of the fuselage enhances the stability of the fuselage.

[0037] The magnetic attachment is retractable. When the stability of the device needs to be enhanced, the magnetic attachment extends to the surface to be tested and adsorbs, thus firmly adsorbing the device onto the metal surface, reducing the probability of device movement or vibration interference, and making the device suitable for working on inclined or vertical surfaces. The power supply equipment is directly integrated into the device body, reducing reliance on external cables, increasing freedom of movement, supporting long-term operation, and reducing the need for frequent charging or energy replacement.

[0038] The power supply device is a battery or a small engine, etc.

[0039] The detection component is equipped with a dustproof plate.

[0040] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0041] 1. This utility model provides a device for detecting defects in steel-concrete composite arch structures. This design improves the device's ability to adapt to curved surfaces and enables the device to provide feedback on working conditions, further enhancing the device's ability to adapt to complex steel-concrete composite arch structures. Attached Figure Description

[0042] Figure 1 This is a perspective view of the device for detecting defects in a steel-concrete composite arch structure provided in the embodiments of this utility model;

[0043] Figure 2 This is a front view schematic diagram of the internal structure of the device for detecting defects in steel-concrete composite arch structures provided in the embodiments of this utility model.

[0044] Figure 3 A three-dimensional schematic diagram of the magnetic suction wheel assembly of the device for detecting defects in steel-concrete arch structures provided in the embodiments of this utility model;

[0045] Figure 4This is an exploded view of the detection component of the device for detecting defects in a steel-concrete composite arch structure according to an embodiment of the present invention.

[0046] Figure 5 This utility model Figure 4 Enlarged view of point A;

[0047] Figure 6 This is a bottom view schematic diagram of the device for detecting defects in steel-concrete composite arch structures provided in the embodiments of this utility model;

[0048] Figure 7 This is a schematic diagram of the device for detecting defects in steel-concrete composite arch structures according to an embodiment of the present invention working on a curved surface.

[0049] Marked in the image:

[0050] 1-Magnetic wheel assembly, 11-Drive wheel assembly, 111-Magnetic roller, 112-First drive device, 12-Frame assembly, 121-First connecting frame, 122-Second connecting frame, 123-Third connecting frame, 124-First spring, 2-Body, 201-Magnetic assembly, 202-Omnidirectional wheel, 203-Power supply equipment, 204-Upper computer, 205-Lower computer, 3-Camera, 31-Wireless transmission device 4-Detection component, 401-Drive shaft, 402-Active push rod, 403-Driven push rod, 404-Driven connecting rod, 41-Actuating component, 411-Second drive device, 412-Actuating rod, 413-Limiting plate, 414-Second spring, 42-Detection information acquisition component, 43-Ratchet assembly, 431-Pawl, 432-Ratchet body, 433-Pawl spring, 51-Dustproof plate, 52-Dustproof cover. Detailed Implementation

[0051] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0052] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0053] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0054] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0055] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0056] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0057] Example

[0058] like Figures 1-7 As shown, a device for detecting defects in a steel-concrete composite arch structure includes a magnetic wheel assembly 1, a body 2, a camera 3, and a detection component 4. The magnetic wheel assembly 1 is connected to one side of the body 2, the camera 3 is located on the top of the magnetic wheel assembly 1, and the detection component 4 includes a striking component 41. The detection component 4 is located inside the body 2, and the side of the striking component 41 that contacts the surface to be detected can extend from the bottom of the body 2.

[0059] The magnetic wheel assembly 1 includes a frame assembly 12 and two drive wheel assemblies 11. The magnetic wheel assembly 1 is connected to the body 2 through the frame assembly 12. The drive wheel assembly 11 includes magnetic rollers 111. One drive wheel assembly 11 is provided on each side of the frame assembly 12 so that the magnetic rollers 111 are arranged opposite to each other. The drive wheel assembly 11 is hinged to the frame assembly 12. When the drive wheel assembly 11 rotates, the included angle between the oppositely arranged magnetic rollers 111 can change.

[0060] The camera 3 is electrically connected to a wireless transmission device 31, which is capable of receiving and transmitting information acquired by the camera 3.

[0061] The camera 3 is a depth camera. The drive wheel assembly 11 also includes a first drive device 112, which is a geared motor that provides driving power to the magnetic roller 111. The frame assembly 12 is hinged to the drive wheel assembly 11. The magnetic roller assembly 1 is fixedly connected to the body 2 by bolts. The body 2 includes an upper frame and a lower frame. The upper frame of the body 2 is equipped with a control system assembly and a protective cover. The protective cover is fixedly connected to the upper frame by hexagonal studs and is used to cover the control system assembly. The host computer 204 of the control system component is fixedly installed on the upper end of the upper frame using short hexagonal studs, and the slave computer 205 is fixedly installed on the lower end of the upper frame using short hexagonal studs. The host computer 204 is used to collect and process signals from the depth camera and the detection component 4, and interacts with the terminal in real time through a wireless transceiver device, and outputs control signals to the slave computer 205. The slave computer 205 controls the magnetic wheel assembly 1 and the detection component 4. The lower frame is equipped with a magnetic assembly 201, an omnidirectional wheel 202, and a power supply device 203, which is a battery pack.

[0062] Two drive wheel assemblies 11 are mounted on both sides of the frame assembly 12. Each drive wheel assembly 11 has a motor mounting bracket and a connecting flange. The geared motor is fixedly connected to the motor mounting bracket by screws, and the connecting flange is fixedly connected to the shaft of the geared motor by screws. The magnetic roller 111 is fixedly connected to the connecting flange by screws.

[0063] Furthermore, the frame assembly 12 includes a C-shaped connecting plate, a third connecting frame 123, a first spring 124, a second connecting frame 122, and a first connecting frame 121. The C-shaped connecting plate is fixedly connected to the motor mounting bracket by bolts. One end of the second connecting frame 122 is hinged to the third connecting frame 123 by a pin bolt, and the other end is hinged to the first connecting frame 121 by a pin bolt. One end of the first spring 124 is hinged to the third connecting frame 123 by a pin bolt, and the other end is hinged to the first connecting frame 121 by a pin bolt. When the magnetic adsorption wheel is attached to curved surfaces with different curvatures, the first connecting frame 121 follows the change and presents a corresponding rotation angle to adapt to the change of the curved surface.

[0064] The upper and lower frames of the fuselage 2 are fixedly connected to the C-shaped connecting plate by bolts, and the upper frame is fixedly connected to the lower frame by bolts.

[0065] The detection component 4 includes a mounting plate, a striking component 41, a ratchet component 43, a detection information acquisition component 42, a dustproof plate 51, and a dustproof cover 52. The striking component 41 and the ratchet component 43 are connected and fixed by the mounting plate. The detection information acquisition component 42 is installed on the mounting plate by screws. The dustproof plate 51 is fixedly connected to the mounting plate by screws and is used to cover the striking component 41. The dustproof cover 52 is fixedly connected to two limiting plates 413 and is used to cover the striking component 41 and the ratchet component 43.

[0066] The striking assembly 41 includes a second driving device 411, an active push rod 402, a transmission shaft 401, a driven push rod 403, a limiting plate 413, a driven connecting rod 404, a striking rod 412, and a second spring 414. The second driving device 411 is fixed to the mounting plate by bolts. The motor shaft of the second driving device 411 is connected to the transmission shaft 401 by a key. The active push rod 402 and the transmission shaft 401 are connected by a flat key. The driven push rod 403 is connected to the driven connecting rod 404 by a retaining ring. The striking rod 412 and the limiting plate 413 are connected by a striking second spring 414.

[0067] The second drive device 411 is a motor.

[0068] The ratchet assembly 43 includes a pawl 431, a ratchet body 432, a connecting bearing, a fixed shaft for the pawl 431, a fixed shaft for the second spring 414, and a pawl spring 433. The ratchet body 432 and the connecting bearing are fixed on the mounting plate. The ratchet body 432 and the driven push rod 403 are fixed with screws. The pawl 431 and the fixed shaft for the pawl 431 are movably connected by two retaining rings. One end of the pawl spring 433 is movably connected to the fixed shaft by two retaining rings, and the other end of the pawl spring 433 is movably connected to the pawl 431 by two retaining rings.

[0069] The detection component 4 includes a microphone mounting plate and a sound acquisition microphone, which is fixedly connected to the microphone mounting plate by screws.

[0070] The omnidirectional wheel 202 includes an omnidirectional wheel 202 mounting bracket, a bearing support, an omnidirectional wheel 202 body, and an omnidirectional wheel 202 shaft. The omnidirectional wheel 202 body is fixedly connected to the omnidirectional wheel 202 shaft, and the bearing support, the omnidirectional wheel 202 mounting bracket, and the lower frame are connected by bolts.

[0071] When in use, the device is placed on the arch surface of the bridge steel pipe, and the device achieves stable contact with the arch surface through the magnetic suction wheel group 1 and the magnetic suction component 201. The frame component 12 enables the device to adapt to changes in the curvature of the surface and stably adhere to the arch surface. When the power is turned on, the control system initializes, the equipment automatically checks the operating status of each component, and establishes a connection with the terminal through the wireless transmission device 31. After initialization is completed, it waits for the terminal to issue a work command. The magnetic roller 111 is driven by a geared motor to achieve movement, and the steering movement is achieved through differential speed control. Images acquired by the depth camera are imported into the host computer 204. The host computer 204 can build a spatial model based on the image data for path planning. Simultaneously, the host computer 204 connects to the terminal for real-time data interaction, enabling remote monitoring and data processing. The device operates automatically according to a preset program. After the device moves to the working position, the detection component 4 automatically performs a tapping detection. The specific tapping detection process is as follows: the lower-level computer 205 outputs a control signal to start the second drive device 411, which drives the transmission shaft 401 to rotate. The transmission shaft 401 drives the active push rod 402 to rotate. 402 drives the driven push rod 403 and ratchet to rotate, which in turn drives the driven connecting rod 404 to move upward. At the same time, the driven connecting rod 404 drives the striking rod 412 to rise, and the striking rod 412 compresses the second spring 414. When the striking rod 412 reaches the preset highest point, the driven push rod 403 is released, completing one strike. At the same time, the sound acquisition microphone collects and transmits the striking sound signal. After one strike, if the striking rod 412 falls again and the ratchet rotates in reverse, the pawl 431 can lock to prevent the ratchet from rotating in reverse and thus prevent a second strike. After one strike is completed, the device moves to position the next striking point, performs a second strike, and transmits the detection data to the terminal through the host computer 204.

[0072] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting defects in steel-concrete composite arch structures, characterized in that, include: The magnetic roller assembly (1), the body (2), the camera (3), and the detection component (4) are provided. The magnetic roller assembly (1) is connected to one side of the body (2), and the detection component (4) is connected to the body (2). The detection component (4) is used to detect the steel pipe concrete arch structure. The magnetic wheel assembly (1) includes a frame assembly (12) and two drive wheel assemblies (11). The magnetic wheel assembly (1) is connected to the machine body (2) through the frame assembly (12). The drive wheel assembly (11) includes a magnetic roller (111). The magnetic wheel assembly (1) can be attracted to the surface to be tested by the magnetic roller (111). One drive wheel assembly (11) is provided on each side of the frame assembly (12) so that the magnetic roller (111) is arranged opposite to each other. The drive wheel assembly (11) is hinged to the frame assembly (12). The camera (3) is electrically connected to a wireless transmission device (31), which is capable of receiving and transmitting images captured by the camera (3).

2. The device for detecting defects in a steel-concrete composite arch structure according to claim 1, characterized in that, The body (2) is also provided with a host computer (204) and a slave computer (205). The camera (3) is electrically connected to the wireless transmission device (31) through the host computer (204). The host computer (204) is electrically connected to the detection component (4). The host computer (204) is used to receive and process the information collected by the camera (3) and the detection component (4) and send information. The host computer (204) and the slave computer (205) are electrically connected. The slave computer (205) is electrically connected to the magnetic chuck assembly (1) and the detection component (4) respectively. The slave computer (205) can control the start and stop of the magnetic chuck assembly (1) and the start and stop of the detection component (4) by receiving information sent by the host computer (204).

3. The device for detecting defects in a steel-concrete composite arch structure according to claim 2, characterized in that, The frame assembly (12) includes a first connecting frame (121), a second connecting frame (122), a third connecting frame (123), and a first spring (124). One side of the first connecting frame (121) is connected to the magnetic roller (111), and the other side is hinged to the second connecting frame (122). The side of the second connecting frame (122) away from the first connecting frame (121) is hinged to the third connecting frame (123). The two ends of the first spring (124) are respectively hinged to the first connecting frame (121) and the third connecting frame (123). The frame assembly (12) is connected to the body (2) through the third connecting frame (123). The drive wheel assembly (11) further includes a first drive device (112), which is connected to the corresponding magnetic roller (111). The lower computer (205) is electrically connected to the magnetic roller assembly (1) through the first drive device (112), and the lower computer (205) controls the first drive device (112) to make the magnetic roller (111) move.

4. The device for detecting defects in a steel-concrete composite arch structure according to claim 2, characterized in that, The detection component (4) includes a striking component (41) for striking the surface to be tested. The striking component (41) includes a second driving device (411) and a striking rod (412). The second driving device (411) is connected to the striking rod (412). The lower computer (205) drives the striking rod (412) to strike the surface to be tested through the second driving device (411).

5. The device for detecting defects in a steel-concrete composite arch structure according to claim 4, characterized in that, The detection component (4) further includes a detection information acquisition component (42), which is used to acquire the sound generated by the striking rod (412) striking the surface to be detected.

6. The device for detecting defects in a steel-concrete composite arch structure according to claim 4, characterized in that, The striking assembly (41) is also connected to a ratchet assembly (43). The second drive device (411) and the striking rod (412) are connected by a crank-connecting rod mechanism. The ratchet assembly (43) is disposed between the second drive device (411) and the crank-connecting rod mechanism. The ratchet assembly (43) is used to limit the unidirectional rotation of the crank-connecting rod mechanism. The striking assembly (41) also includes a second spring (414) and a limiting plate (413). The second spring (414) is sleeved on the striking rod (412). The lower end of the second spring (414) is connected to the striking rod (412). The striking rod (412) can drive the second spring (414) to extend and retract. The limiting plate (413) is provided at both ends of the second spring (414).

7. The device for detecting defects in a steel-concrete composite arch structure according to claim 6, characterized in that, The crank-connecting rod mechanism includes a drive shaft (401), a driving push rod (402), a driven push rod (403), and a driven connecting rod (404). The second drive device (411) is connected to the crank-connecting rod mechanism through the drive shaft (401). One end of the driving push rod (402) is connected to the drive shaft (401), and the other end is connected to the driven push rod (403). The end of the driven push rod (403) away from the driving push rod (402) is movably connected to the driven connecting rod (404). The striking rod (412) is connected to the crank-connecting rod mechanism through the driven connecting rod (404).

8. The device for detecting defects in a steel-concrete composite arch structure according to claim 6, characterized in that, The ratchet assembly (43) includes a pawl (431), a ratchet body (432), and a pawl spring (433). The ratchet body (432) is connected to the second drive device (411). The pawl (431) can contact the ratchet body (432). The pawl (431) is used to limit the unidirectional rotation of the ratchet body (432). One end of the pawl spring (433) is fixedly set, and the other end is connected to the pawl (431).

9. A device for detecting defects in a steel-concrete composite arch structure according to any one of claims 1-8, characterized in that, The body (2) is provided with a magnetic suction component (201), an omnidirectional wheel (202) and a power supply device (203). The magnetic suction component (201) and the omnidirectional wheel (202) are both located on the bottom surface of the body (2). The magnetic suction component (201) is used to attach to the surface to be tested. The omnidirectional wheel (202) is located on the rear side of the body (2), and the magnetic roller (111) is located on the front side of the body (2).

10. The device for detecting defects in a steel-concrete composite arch structure according to claim 9, characterized in that, The detection component (4) is equipped with a dustproof plate (51) and a dustproof cover (52).

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