Tunnel and pipeline damage detection device

Abstract

The invention relates to the technical field of tunnel and pipeline detection, in particular to a tunnel and pipeline damage detection device, and aims to solve the problems that an existing tunnel and pipeline damage detection device cannot adapt to the bent position of a pipeline during pipeline detection and needs manual operation during working. The tunnel and pipeline damage detection device provided by the invention comprises a movable base and a detection main body, the detection main body comprises a supporting assembly; an adjusting assembly is arranged on the supporting assembly; a positioning assembly is rotationally connected to the supporting assembly. The supporting assembly comprises a base. A mounting seat is arranged above the base; and the mounting seat is connected with the base through a plurality of fixing rings. The adjustment assembly includes a plurality of airbags. The positioning assembly comprises a rotating table; and a universal connecting piece and a rail are arranged on the rotating table. The tunnel and pipeline damage detection device can be used for tunnel or pipeline surface damage detection, the device can adapt to pipelines of different shapes through the air bag, and suspected damage points can be positioned and amplified through the rotating rod.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel pipeline detection, and particularly to a tunnel and pipeline damage detection device. Background Art

[0002] With the acceleration of the urbanization process, more and more mountainous areas are connected to towns by building tunnels, which greatly shortens the travel time and promotes the construction and exchange of economy and culture. As an important transportation infrastructure, the safety and stability of tunnels are of crucial importance.

[0003] As the service time of tunnels increases, a series of problems gradually emerge, among which the pipeline damage problem is particularly prominent. Since the groundwater contains a large amount of ions, these ions are likely to physically precipitate and crystallize or chemically precipitate and crystallize inside the pipeline, thereby forming solid crystals to block the tunnel drainage pipeline, and may even cause the entire tunnel drainage system to collapse. In addition, carbon dioxide, carbonate ions, bicarbonate ions, etc. in the water will also affect the pH value of the water under certain conditions, thereby enhancing the corrosiveness of the water, which may cause problems such as corrosion holes and corrosion spots on the pipeline. In severe cases, the pipeline may even be corroded through, resulting in water leakage, posing a serious threat to the safety of the tunnel.

[0004] Traditional tunnel pipeline damage detection methods have many limitations. For example, due to the relatively narrow space where the pipeline is installed, it is extremely inconvenient for construction workers to perform flaw detection on the pipeline. It is difficult to effectively fit the flaw detection equipment to the outer wall of the pipeline for flaw detection, resulting in inaccurate final detection results. In addition, traditional detection methods usually require construction workers to hold the flaw detection equipment for a long time, with high labor intensity and easy to shake, further affecting the accuracy of the measurement results. In view of the limitations of traditional detection methods and the severity of the tunnel pipeline damage problem, it is particularly important to develop a more efficient and accurate tunnel and pipeline damage detection device. Such a device needs to overcome the deficiencies of traditional methods and achieve rapid and accurate detection of tunnel pipeline damage, so as to provide strong support for the maintenance and management of tunnels.

[0005] There is a patent with the authorized announcement number CN113514613A, which discloses a tunnel pipeline damage detection device, including a clamping member, a detection mechanism, a controller, a positioning mechanism, and a jacking mechanism; the positioning mechanism is respectively provided with a positioning part and an adjusting part, and the positioning part and the adjusting part are arranged at a relative interval. The positioning mechanism is provided with a receiving cavity, and the bottom surface of the positioning mechanism forms a curved surface adapted to the pipeline; one end of the clamping member is connected to the positioning part, and the other end of the clamping member is wound along the circumferential direction of the pipeline and then connected to the adjusting part. The clamping member is also provided with an adjustment joint; the detection mechanism is arranged in the receiving cavity, and the jacking mechanism is connected to the positioning mechanism and the movable end of the jacking mechanism presses against the top surface of the detection mechanism. Thus, the detection mechanism can be stably attached to the pipeline, ensuring the accuracy of the flaw detection results, so that construction workers can take timely and effective measures to maintain the pipeline according to the flaw detection results, solving the problem of inaccurate detection results in the prior art.

[0006] However, the above tunnel pipeline damage detection device still has the following problems when in use: (1) The detection device can adapt to changes in the pipeline diameter within a certain range, but for pipelines with extreme sizes or special shapes, its adaptability may be limited; (2) Although the detection device reduces manual intervention, some settings still need to be adjusted manually (such as turning bolts for locking), and the automation level needs to be improved. Summary of the Invention

[0007] In view of the problems existing in the above prior art, the present invention provides a tunnel and pipeline damage detection device. On the one hand, through the design of the airbag, the length and flexibility of the support component are allowed to be adjusted, which enables the device to adapt to pipeline environments with different shapes and sizes; on the other hand, through the universal joint and the track, the angle and position of the laser locator are flexibly adjusted, facilitating quick positioning and magnification of suspected damage points.

[0008] To achieve the above object, the technical solution adopted by the present invention is as follows: The present application provides and designs a tunnel and pipeline damage detection device, including a moving base, and a detection main body movably connected to the moving base; the detection main body includes a support component for stable support; the support component is provided with an adjustment mechanism for adjusting the length and bending angle of the support component; a positioning component for magnifying the detection target is rotatably connected to the support component.

[0009] Further, the support component includes a base for connecting the moving base; an installation seat is arranged above the base, and the installation seat is used for installing the positioning component; the installation seat and the base are connected by a plurality of fixing rings, and the fixing rings are also provided with a probe component for detecting damage on the surface of the pipeline.

[0010] Further, the adjusting mechanism includes a plurality of adjusting components; each of the adjusting components is sleeved in the fixed ring correspondingly; adjacent adjusting components are communicated with each other.

[0011] Further, the adjusting component includes a connecting seat and an airbag; the connecting seat is sleeved in the corresponding fixed ring; one end of the airbag is communicated with the connecting seat, and the other end is communicated with an adjacent adjusting component.

[0012] Further, the positioning component includes a rotating table rotatably sleeved on the mounting seat; a semi-circular outer shell is provided on the rotating table; a track for mounting a laser scanning module is rotatably connected to the rotating table.

[0013] Further, a universal connecting piece is further arranged on the rotating table; a rotating rod for mounting a laser locator is rotatably connected between the universal connecting piece and the track; a connecting rod for pushing the rotating rod is rotatably connected between the rotating rod and the outer shell.

[0014] Further, a plurality of pulleys for moving inside the pipeline are provided on both the mounting seat and the base; the pulleys are connected to the mounting seat and the base through hydraulic push rods.

[0015] A detection method for a tunnel and pipeline damage detection device, the detection method includes two different detection states of detecting a tunnel and detecting a pipeline; when detecting a tunnel, detection is carried out through a positioning component and a detection main body; when detecting a pipeline, detection is carried out through a positioning component, a support component and a detection main body.

[0016] Further, the specific method for detecting a tunnel includes: S1: Move the detection main body to a specified position through a moving base; S2: Use the laser scanning module on the track to scan the tunnel surface to initially judge suspected damage points; S3: Drive the rotating rod to rotate to an angle corresponding to the suspected damage point; S4: Use the laser locator to magnify the suspected damage point to further judge the damage condition of the tunnel surface.

[0017] Further, the specific method for detecting a pipeline includes: S1: Separate the base from the moving base; S2: Rotate the track to be perpendicular to the pipeline and use the pulley to support on the inner wall of the pipeline; S3: Use the probe assembly to penetrate the material surface layer of the pipeline to detect internal damage; S4: Use the laser scanning module to scan the surface of the pipeline to judge the damage of the pipeline surface; S5: Inflate the airbag to make it stretch and bend for detecting damages at the bent parts of the pipeline.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Through the design of the airbag, it is allowed to adjust the length and flexibility of the support assembly, which enables the device to adapt to pipeline environments of different shapes and sizes. For example, when encountering a bent pipeline, the length can be adjusted through the adjustment assembly, enabling the probe assembly to expand the detection range and detect the bent parts. The adjustment assembly not only improves the adaptability of the support assembly but also can adjust the position of the ultrasonic device to make it applicable to pipelines of different diameters, greatly enhancing the practicability of the device. The positioning assembly provided at the top of the support assembly can flexibly adjust the angles and positions of the laser scanning module and the laser locator through the universal joint and the track, facilitating quick positioning and magnifying the suspected damage points. This design not only improves the operation convenience but also reduces the need for manual intervention, thus enhancing the operation safety.

[0019] 2. By adopting the laser scanning device, the laser positioning device and the ultrasonic device, the device can achieve comprehensive detection of the tunnel and the pipelines inside it. The laser technology can perform large-range and high-precision surface scanning, while the ultrasonic detection can penetrate the material surface layer to detect potential internal damages. Combining the advantages of both can greatly improve the detection accuracy and efficiency.

[0020] 3. Using high-strength and high-wear-resistant materials to manufacture key components ensures that the device can still maintain good performance in harsh environments and extends the service life of the device. At the same time, the configuration of the pulleys and the hydraulic push rods helps the device to move smoothly inside the pipeline, increasing the reliability and stability of the overall system.

[0021] 4. The entire system is built based on a movable base. The design of the electric push rod and the telescopic structure facilitates the transportation and deployment of the device, is conducive to quick on-site installation and disassembly, and is very suitable for application scenarios that require frequent transfer of the detection location. Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, so they should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0023] Figure 1 It is the overall structure schematic diagram of the present invention; Figure 2 It is the structure schematic diagram of the movable base in the present invention; Figure 3Schematic diagram of the structure of the detection main body in the present invention; Figure 4 Cross-sectional view of the present invention; Figure 5 Schematic diagram of the structure of the support assembly in the present invention; Figure 6 Schematic diagram of the structure of the fixing ring in the present invention; Figure 7 Schematic diagram of the structure of the probe assembly in the present invention; Figure 8 In the present invention Figure 4 Enlarged view of position A; Figure 9 Schematic diagram of the structure of the adjustment assembly in the present invention; Figure 10 In the present invention Figure 9 Enlarged view of position B; Figure 11 In the present invention Figure 9 Enlarged view of position C; Figure 12 Schematic diagram of the airbag structure in the present invention; Figure 13 Schematic diagram of the structure of the connecting seat in the present invention; Figure 14 Schematic diagram of the structure of the positioning assembly in the present invention; Figure 15 Schematic diagram of the structure of the outer shell and the rotating wheel in the present invention; Figure 16 Schematic diagram of the structure of the universal joint and the rotating rod in the present invention.

[0024] In the figure: 1 - moving base; 11 - electric push rod; 111 - clamping block; 12 - roller; 13 - push handle; 2 - detection main body; 21 - scanning device; 22 - probe assembly; 221 - ultrasonic probe; 222 - piston expansion rod; 23 - laser positioning device; 24 - ultrasonic device; 3 - adjustment assembly; 31 - airbag; 32 - connecting seat; 321 - chamber; 322 - ventilation cavity; 323 - inner ventilation cavity; 33 - air pump; 4 - positioning assembly; 41 - rotating table; 411 - groove; 42 - outer shell; 421 - slotted opening; 43 - track; 431 - sliding groove; 44 - universal joint; 45 - rotating rod; 46 - connecting rod; 47 - support rod; 48 - rotating motor; 49 - micro motor; 5 - support assembly; 51 - base; 511 - card slot; 52 - mounting seat; 53 - fixing ring; 54 - rope; 55 - fixing rod; 56 - reel; 6 - pulley; 61 - hydraulic push rod. Detailed implementation manners

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments, rather than all the embodiments.

[0026] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0027] In the description of the present application, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "install", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations. Embodiment 1

[0028] Combined with Figure 1-16 As shown, the present invention provides a tunnel and pipeline damage detection device, which includes a moving base 1 and a detection main body 2 movably connected to the moving base 1; the detection main body 2 includes a support assembly 5 for stable support; an adjustment mechanism for adjusting the length and bending angle of the support assembly 5 is provided on the support assembly 5; a positioning assembly 4 for magnifying the detection target is rotatably connected to the support assembly 5.

[0029] It should be noted that the detection body 2 is used for laser scanning, identification, and data transmission of the tunnel and the pipelines inside the tunnel. The detection body 2 includes a laser scanning device 21, a laser positioning device 23, and an ultrasonic device 24. To improve the stability, flexibility, and practicality of the device, a support assembly 5 is provided to enhance the durability of the device, and key components of the device are manufactured using high-strength and highly wear-resistant materials. The positioning assembly 4 is arranged at the top of the support assembly 5, and the laser scanning device 21 and the laser positioning device 23 are arranged on the positioning assembly 4, which is convenient for large-range scanning detection of damages on the tunnel and pipelines, and is also convenient for positioning and magnifying suspected damage points. To improve the positioning accuracy of the laser positioning device 23, a calibration module (such as a reference reflector) is added to the laser positioning device 23. The ultrasonic device 24 is arranged between the support assembly 5 and the adjustment assembly 3. The adjustment assembly 3 can not only adjust the length and flexibility of the support assembly 5 but also adjust the detection length of the ultrasonic device 24, enabling the ultrasonic device 24 to adapt to pipelines with different inner diameters. The detection of the tunnel pipelines in this application conforms to the pipeline detection method of ASTM F1216 standard, which will not be elaborated in detail below.

[0030] Further, the support assembly 5 includes a base 51 for connecting the mobile base 1; an installation seat 52 is arranged above the base 51; the installation seat 52 is used for installing the positioning assembly 4; the installation seat 52 and the base 51 are connected by a plurality of fixing rings 53, and a probe assembly 22 for detecting damages on the pipeline surface is also arranged on the fixing rings 53.

[0031] The base 51 is movably connected to the mobile base 1, and a plurality of fixing rings 53 are arranged at equal intervals between the base 51 and the installation seat 52. The installation seat 52 is used for movably connecting the positioning assembly 4. Moreover, the base 51, the installation seat 52, and the fixing rings 53 are all made of high-strength metal.

[0032] Further, the probe assembly 22 includes an ultrasonic probe 221 and a piston expansion rod 222; the fixed end of the piston expansion rod 222 is communicated with the connecting seat 32, and the telescopic end slidably penetrates through the fixing ring 53.

[0033] The fixed end of each piston expansion rod 222 penetrates through the connecting seat 32 and is electrically connected to its corresponding ultrasonic device 24, and the telescopic end penetrates through its corresponding fixing ring 53 and is connected to the ultrasonic probe 221. Each fixed end is communicated with the chamber 321. When gas is inhaled into the piston expansion rod 222, it can be extended to extend the ultrasonic probe 221 towards the inner wall of the pipeline. Specifically, an interface is reserved in the probe assembly 22 to support infrared thermal imaging or electromagnetic eddy current detection.

[0034] Further, a plurality of ropes 54 are slidably sleeved outside the fixing ring 53; one end of the rope 54 is connected to the mounting base 52, and the other end is wound inside the base 51.

[0035] A reel 56 is provided inside the base 51. The upper end of the rope 54 is fixedly connected to the mounting base 52, and the lower end is wound around the reel 56. The reel 56 can be automatically rotated by electrical control for relaxing and tightening the rope 54. In the state where the support assembly 5 does not need to be extended, the rope 54 is in a tightened state. When the length of the support assembly 5 needs to be adjusted, the reel 56 is started to relax the rope 54, so that the rope 54 extends synchronously with the fixing ring 53, and keeps a tightened state in cooperation with the change in length.

[0036] Further, a plurality of pulleys 6 for moving inside the pipeline are provided on both the mounting base 52 and the base 51; the pulleys 6 are connected to the mounting base 52 and the base 51 through hydraulic push rods 61.

[0037] A plurality of pulleys 6 are arranged circumferentially on the base 51 and the mounting base 52 and correspond up and down for moving inside the pipeline. The hydraulic push rod 61 is a prior art and will not be described in detail in this application. The pulley 6 is fixedly connected to the telescopic end of the hydraulic push rod 61. When the device works in pipelines of different sizes, the telescopic end of the hydraulic push rod 61 can be controlled to extend and retract so that the pulley 6 adapts to pipelines of different sizes.

[0038] Further, an electric push rod 11 is provided on the moving base 1; the base 51 is movably connected to the telescopic end of the electric push rod 11.

[0039] Specifically, the moving base 1 serves as the foundation of the entire device, provides support and allows the device to move inside the tunnel. A power supply assembly is provided inside the moving base 1, which includes a replaceable battery and a fast charging port, and the battery life is 8 - 10 hours. A plurality of rollers 12 are provided at the bottom of the moving base 1, and a pusher 13 for pushing and pulling is further provided at the top. A plurality of clamping blocks 111 are provided at the telescopic end of the electric push rod 11, and a plurality of clamping grooves 511 matching the clamping blocks 111 are provided at the bottom of the base 51, so that the base 51 and the moving base 1 are detachably connected. The moving base 1 is made of high-strength and wear-resistant materials to ensure stable operation in complex environments.

[0040] Working principle: When detecting a tunnel, the staff can push the mobile base 1 to move on the tunnel plane, and start the electric push rod 11 according to the height of the tunnel to adjust the distance between the laser detection device and the ground. The laser scanning device 21 remotely transmits the on-site situation to the display device. When detecting a pipeline, the base 51 is separated from the electric push rod 11, and the hydraulic push rod 61 is started to adjust the length so that the pulley 6 adapts to the corresponding pipeline. Then, the pulley 6 is started to move inside the pipeline, and the positioning component 4 is started to make corresponding angle adjustments to the laser scanning device 21. At this time, the laser scanning device 21 and the ultrasonic device 24 jointly scan the pipeline. When encountering a bend in the pipeline, the adjustment mechanism is started to expand the distance between the fixed rings 53, so that the support component 5 can imitate the bending of a centipede and fit the bend of the inner wall of the pipeline, and then the detection work can be carried out on this bend. Embodiment 2

[0041] On the basis of Embodiment 1, Embodiment 2 provides a specific structure of the positioning component 4, which further improves the practicability of the device.

[0042] Specifically, the positioning component 4 includes a rotating table 41 rotatably sleeved on the mounting seat 52; a semi-circular outer shell 42 is provided on the rotating table 41; a track 43 for installing a laser scanning module is rotatably connected to the rotating table 41.

[0043] Specifically, the upper opening of the mounting seat 52 is provided with threads, and the rotating table 41 is threadedly connected to the mounting seat 52. A rotating motor 48 is provided inside the mounting seat 52, and the output end of the rotating motor 48 is clamped to the central part of the rotating table 41, so that the rotating motor 48 can not only drive the rotating table 41 to rotate, but also remove the rotating table 41. The shape of the outer shell 42 corresponds to that of the tunnel and the pipeline, which is convenient for more accurate and comprehensive scanning. The track 43 is semi-circular, and its two ends are hinged to the side surface of the rotating table 41. The outer shell 42 is fixedly connected to the rotating table, and the track 43 is in contact with the end of the outer shell 42. The laser scanning modules of the laser scanning device 21 are arranged equidistantly on the outer peripheral surface of the track 43.

[0044] Furthermore, a universal joint 44 is also provided on the rotating table 41; a rotating rod 45 for installing a laser locator is rotatably connected between the universal joint 44 and the track 43; a connecting rod 46 for pushing the rotating rod 45 is rotatably connected between the rotating rod 45 and the outer shell 42.

[0045] The universal joint 44 is connected to the rotating table 41 through a support rod 47. One end of the support rod 47 is fixedly connected to the rotating table 41, and the other end is provided with a spherical part for adapting to the universal joint 44. The universal joint 44 is rotatably connected within the spherical part, and the spherical part is provided with a cross-shaped limiting groove to facilitate the stable adjustment of the rotating rod 45. A sliding groove 431 is formed in the track 43. One end of the rotating rod 45 is fixedly connected to the universal joint 44, and the other end is slidably sleeved within the sliding groove 431. A slot 421 matching the connecting rod 46 is formed on one side of the housing 42 close to the universal joint 44. One end of the connecting rod 46 is fixedly connected to the rotating rod 45, and the other end passes through the slot 421 and is fixedly connected to the output end of the micro motor 49 through a connecting rod. The micro motor 49 and the slot 421 are arranged on the same side of the housing 42. A groove 411 matching the rotating rod 45 is correspondingly formed on the moving disk.

[0046] Working principle: During use, the micro motor 49 is started, so that the connecting rod drives the connecting rod 46 to slide under the limitation of the slot 421. The connecting rod 46 drives the rotating rod 45 to rotate under the limitation of the sliding groove 431, and then drives the laser positioning device 23 to adjust the scanning angle under the limitation of the spherical part, so as to lock and magnify the suspected damage point. When detecting inside the pipeline, the track 43 needs to be rotated 90 degrees. At this time, the rotating rod 45 is clamped into the groove 411, and at this time the laser positioning device 23 does not work, so that the laser scanning device 21 is perpendicular to the inner wall of the pipeline. When scanning, the rotating motor 48 can be started to drive the rotating table 41 to rotate 360 degrees, so that the laser scanning device 21 can detect omnidirectionally. Embodiment III

[0047] On the basis of Embodiment I, Embodiment III provides a specific structure of an adjusting mechanism to further improve the flexibility of the device.

[0048] Specifically, the adjusting mechanism includes a plurality of adjusting components 3, and each adjusting component 3 is correspondingly sleeved within the fixed ring 53; two adjacent adjusting components 3 are communicated with each other.

[0049] Furthermore, the adjusting component 3 includes a connecting seat 32 and an airbag 31; the connecting seat 32 is sleeved within the corresponding fixed ring 53; one end of the airbag 31 is communicated with the connecting seat 32, and the other end is communicated with the adjacent adjusting component 3.

[0050] A plurality of connecting seats 32 are arranged in a row with their heads and tails in contact with each other inside the inner ring of the fixed ring 53, and the number of connecting seats 32 is equal to that of the fixed ring 53. The connecting seat 32 has a hard shell, and the fixed ring 53 is fixedly connected to the connecting seat 32 through a fixing rod 55. The airbag 31 is made of corrosion-resistant silica gel (tensile strength ≥ 5 MPa), suitable for the internal environment of tunnel pipelines, and has an explosion-proof design, and can be applied to oil and gas pipelines. When the connecting seats 32 move away from each other, they will drive the fixed ring 53 to move and move away from each other, thereby changing the overall length. The lowermost connecting seat 32 is internally connected to the base 51, and the uppermost connecting seat 32 is connected to the bottom of the mounting seat 52 through an air storage chamber, and the air storage chamber is connected to the corresponding connecting seat 32.

[0051] It should be noted that the interior of the connecting seat 32 is divided into a chamber 321 and a ventilation chamber 322. Inside the base 51, an air pump 33 is provided above the reel 56. The air pump 33 is electrically connected to the power supply assembly. A chamber 321 and a ventilation chamber 322 are first connected at a position close to the top of the air pump 33, and then the airbag 31 and another chamber 321 are connected in sequence. The airbag 31 is always arranged between two ventilation chambers 322 until a chamber 321 and a ventilation chamber 322 are connected near the mounting seat 52. The number of connecting seats 32 is always one more than the number of airbags 31. In the middle of each connecting seat 32, the ultrasonic device 24 is fixedly connected, and the ultrasonic device 24 is located above the airbag 31. An internal ventilation cavity 323 is also sleeved outside the ultrasonic device 24. The bottom of the internal ventilation cavity 323 is connected to the top of the airbag 31, and the top of the internal ventilation cavity 323 is connected to the inside of the connecting seat 32. The top of the connecting seat 32 is connected to the bottom of the adjacent airbag 31. The connecting seat 32 is fixedly sleeved in the chamber 321 and is connected to the chamber 321 through the airbag 31. The number of connecting seats 32 is the same as the number of chambers 321.

[0052] Since the upper half of each airbag 31 is located inside the chamber 321 and is connected to the chamber 321 when not inflated, the chamber 321 has a limiting effect on the upper half. Therefore, when continuously inflated, the lower half of the airbag 31 will extend downward. That is to say, the inflation and extension direction of the airbag 31 is limited by the side wall of the chamber 321, thereby forming a unidirectional extension structure. When the airbag 31 extends, the corresponding connecting seat 32 is fixedly connected to the top of the airbag 31. Therefore, finally only the lower half of the airbag 31 extends and leaks out. The distance between the plurality of connecting seats 32 is pulled apart, and the size of the connecting seat 32 does not change.

[0053] Working principle: When in use, separate the base 51 from the electric push rod 11, and place the upper part of the load-bearing detection body 2 into the pipeline. When encountering a bent part of the pipeline or when it is necessary to extend the support assembly 5, start the air pump 33. The gas enters through the chamber 321 at the bottom and reaches the chamber 321 near the mounting seat 52 and the air storage chamber until they are saturated. Then the gas flows downward into other chambers 321, the ventilation chamber 322, and the inner ventilation chamber 323 until they all reach a certain saturation. At this time, continue to inflate, and each airbag 31 can be squeezed to extend downward, increasing the distance between multiple connecting seats 32. Furthermore, the fixing ring 53 is driven by the fixing rod 55, and the distance between them also increases, making the length of the support assembly 5 longer. After the piston expansion rod 222 is inflated and extended, the ultrasonic probe 221 is attached to the inner wall of the pipeline. After attachment, the piston expansion rod 222 will automatically stop inhaling. At the same time, the reel 56 is also started to release the rope 54. The rope 54 corresponds to the fixing ring 53 and always remains in a tightened state. When using the ultrasonic device 24 at a non-bent part of the pipeline, the air pump 33 can be started to inflate the chamber 321. At this time, the reel 56 is not started, and the rope 54 is tightened to fix the ring 53 to maintain the original distance state, so that only the piston expansion rod 222 can be telescoped, and the length of the device remains unchanged. Embodiment 4

[0054] Embodiment 4 provides a detection method for the tunnel and pipeline damage detection device described in Embodiment 3. The detection method includes two different detection states: detecting the tunnel and detecting the pipeline. When detecting the tunnel, detection is carried out through the positioning component 4 and the detection body 2. When detecting the pipeline, detection is carried out through the positioning component 4, the support component 5, and the detection body 2.

[0055] Furthermore, the specific method for detecting the tunnel includes: S1: Move the detection body 2 to the designated position through the moving base 1; the staff can push the moving base 1 to move on the tunnel plane and start the electric push rod 11 according to the height of the tunnel to adjust the distance between the laser detection device and the ground.

[0056] S2: Use the laser scanning module on the track 43 to scan the surface of the tunnel to initially judge the suspected damage points; the laser scanning device 21 remotely transmits the on-site situation to the display device.

[0057] S3: Drive the rotating rod 45 to rotate to the angle corresponding to the suspected damage point; when in use, start the micro motor 49, so that the connecting rod drives the connecting rod 46 to slide under the limit of the slot 421, and the connecting rod 46 drives the rotating rod 45 to rotate under the limit of the chute 431.

[0058] S4: Use a laser locator to magnify the suspected damage point and further determine the damage condition on the tunnel surface. Drive the laser positioning device 23 to adjust the scanning angle under the limitation of the spherical part, and then lock and magnify the suspected damage point.

[0059] Furthermore, the specific method for detecting the pipeline includes: S1: Separate the base 51 from the moving base 1; manually separate the clamping block 111 from the clamping groove 511 to disassemble the detection main body 2.

[0060] S2: Rotate the track 43 to be perpendicular to the pipeline and use the pulley 6 to support on the inner wall of the pipeline; by the telescoping of the hydraulic push rod 61, the pulley 6 can support in pipelines with different inner diameters.

[0061] S3: Use the probe assembly 22 to penetrate the material surface layer of the pipeline to detect internal damage; when in use, start the air pump 33 to inflate the chamber 321. The piston expansion rod 222 is communicated with the chamber 321, apply air pressure to the piston expansion rod 222, and its telescopic end will bring the ultrasonic probe 221 to stick to the inner wall of the pipeline.

[0062] S4: Use the laser scanning module to scan the surface of the pipeline to judge the damage on the pipeline surface; the laser scanning module is fixedly installed on the rotating table 41. When in use, the rotating motor 48 can be started to rotate the rotating table 41, and the laser scanning module can perform 360-degree detection on the inside of the pipeline.

[0063] S5: Inflate the airbag 31 to make the airbag 31 extend and bend for detecting the damage at the bent part of the pipeline. When in use, start the air pump 33, and the gas enters through the bottom chamber 321 until it reaches the chambers 321 and the air storage chamber near the mounting seat 52 until they are saturated. Then the gas flows downward into other chambers 321, the ventilation chamber 322, and the inner ventilation chamber 323 until they all reach a certain saturation. At this time, continue to inflate, and the airbag 31 can be squeezed to extend downward, making the distance between multiple connecting seats 32 larger. Then the fixing ring 53 is driven by the fixing rod 55, and the distance between them also becomes larger, making the length of the support assembly 5 longer. When encountering a bent part, the pulley 6 will automatically move forward to make the fixing ring 53 fit the angle of the bent part, which is convenient for detecting the damage here.

[0064] Specific application cases A tunnel and pipeline damage detection device. The aging problem of the urban underground drainage system is becoming increasingly serious. Using this detection device, these systems can be effectively detected non-destructively, and cracks, corrosion or other forms of damage can be found in time, thus preventing potential leakage or collapse risks.

[0065] This application provides a tunnel and pipeline damage detection device. When the device is in use, the specific operation process is as follows: Adjust the height of the device according to the specific dimensions of the tunnel to be detected; Rotate the track 43 by 90 degrees; adjust the length of the hydraulic push rod 61 according to the specific dimensions of the pipeline to be detected; use the pulleys 6 on the mounting base 52 and the base 51 to smoothly move the entire detection device into the pipeline; separately start the air pump 33 to extend the piston expansion rod 222 to press the ultrasonic probe 221 against the inner wall of the pipeline; In case of special circumstances, start the air pump 33 and the winch 56 simultaneously to inflate the airbag 31 (inflation pressure 0.3 MPa) to extend the lower part of the airbag 31; Start the rotation motor 48 to rotate the turntable 41 by 360 degrees for comprehensive detection.

[0066] In summary, although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tunnel and pipeline damage detection device, comprising a moving base (1) and a detection main body (2) movably connected to the moving base (1); characterized in that, The detection main body (2) includes a support assembly (5) for stable support; An adjustment mechanism for adjusting the length and bending angle of the support assembly (5) is provided on the support assembly (5); A positioning assembly (4) for magnifying the detection target is rotatably connected to the support assembly (5).

2. The tunnel and pipeline damage detection device according to claim 1, wherein The support assembly (5) includes a base (51) for connecting the moving base (1); An installation seat (52) is provided above the base (51), and the installation seat (52) is used for installing the positioning assembly (4); The installation seat (52) and the base (51) are connected by a plurality of fixing rings (53), and a probe assembly (22) for detecting surface damage of the pipeline is further provided on the fixing rings (53).

3. The tunnel and pipeline damage detection device according to claim 2, characterized in that, The adjustment mechanism includes a plurality of adjustment components (3); Each of the adjustment components (3) is correspondingly sleeved in the fixing ring (53); Adjacent two adjustment components (3) are communicated with each other.

4. The tunnel and pipeline damage detection device according to claim 3, wherein The adjustment component (3) includes a connecting seat (32) and an airbag (31); The connecting seat (32) is sleeved in the corresponding fixing ring (53); One end of the airbag (31) is communicated with the connecting seat (32), and the other end is communicated with an adjacent adjustment component (3).

5. The tunnel and pipeline damage detection device according to claim 2, wherein, The positioning assembly (4) includes a rotating table (41) rotatably sleeved on the installation seat (52); A semi-circular outer shell (42) is provided on the rotating table (41); A track (43) for installing a laser scanning module is rotatably connected to the rotating table (41).

6. The tunnel and pipeline damage detection device according to claim 5, characterized in that, A universal joint (44) is further provided on the rotating table (41); A rotating rod (45) for installing a laser locator is rotatably connected between the universal joint (44) and the track (43); A connecting rod (46) for pushing the rotating rod (45) is rotatably connected between the rotating rod (45) and the outer shell (42).

7. The tunnel and pipeline damage detection device according to claim 2, wherein, A plurality of pulleys (6) for moving inside the pipeline are provided on both the installation seat (52) and the base (51); The pulleys (6) are connected to the installation seat (52) and the base (51) through hydraulic push rods (61).

8. A detection method for a tunnel and pipeline damage detection device, characterized in that, The detection method includes two different detection states: detecting a tunnel and detecting a pipeline; When detecting a tunnel, detection is performed through the positioning assembly (4) and the detection main body (2); When detecting a pipeline, detection is performed through the positioning assembly (4), the support assembly (5) and the detection main body (2).

9. The detection method of the tunnel and pipeline damage detection device according to claim 8, characterized in that The specific method for detecting a tunnel includes: S1: Move the detection main body (2) to a specified position through the moving base (1); S2: Use the laser scanning module on the track (43) to scan the tunnel surface and preliminarily judge the suspected damage points; S3: Drive the rotating rod (45) to rotate to the angle corresponding to the suspected damage point; S4: Use the laser locator to magnify the suspected damage point and further judge the damage condition of the tunnel surface.

10. The detection method of the tunnel and pipeline damage detection device according to claim 8, characterized in that, The specific method for detecting a pipeline includes: S1: Separate the base (51) from the moving base (1); S2: Rotate the track (43) to be perpendicular to the pipeline and use the pulleys (6) to support on the inner wall of the pipeline; S3: Use the probe assembly (22) to penetrate the material surface layer of the pipeline to detect internal damage; S4: Use the laser scanning module to scan the surface of the pipeline to judge the damage on the pipeline surface; S5: Inflate the airbag (31) to make the airbag (31) extend and bend for detecting the damage at the bent part of the pipeline.

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