A device and method for measuring the depth of cracks in a highway tunnel

Abstract

The present invention discloses a device and method for measuring the depth of cracks in highway tunnels, which relates to the technical field of tunnel crack measurement. It includes a measurement component and a movable rod. The first and second measurement plates of the measurement component are connected by an adjustment component. The second measurement plate is symmetrically arranged on both sides of the first measurement plate and can be rotated to adjust the angle to match the outer contour of the tunnel crack. The movable rod is inserted into the through holes of the measurement plates to form the inner contour of the crack. The adjustment component can make the measurement plates adapt to various crack shapes, improving the measurement adaptability. The movable rod cooperates with the measurement plates to visually present the crack depth and internal shape. At the same time, the measurement method of the present invention uses dual measurement of the movable rod and the transducer to avoid the limitations of single measurement and greatly improve the data accuracy. Compared with the traditional measurement method, the present invention effectively solves the problems of poor measurement adaptability and low data accuracy caused by the complex crack morphology, providing a more reliable technical means for the measurement of highway tunnel cracks.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel crack measurement, and particularly relates to a device and method for measuring the depth of cracks in highway tunnels. Background Art

[0002] In the field of highway tunnel construction and maintenance, accurately measuring the depth of tunnel cracks is a key link in evaluating the structural safety of tunnels and formulating effective repair plans in a timely manner. There are many problems with existing devices and methods for measuring the depth of highway tunnel cracks. Taking the publicly disclosed patent CN117288126B as an example, it discloses a device for measuring the depth of highway tunnel cracks, which includes a detection component for penetration, an injection component, an arc-shaped support plate, an upper annular grip, a lower annular grip, and moving wheels, etc. Although this patent has certain innovations in crack depth measurement technology, its limitations are significant.

[0003] On the one hand, the method of using water absorption to judge the crack depth in this patent has a very limited scope of application and can only be used for measuring horizontal plane gaps. In the actual highway tunnel environment, the shapes and orientations of cracks are complex and diverse, and a large number of non-horizontal cracks exist widely. This method simply cannot accurately measure the depth when facing such cracks. On the other hand, when the cotton strips cannot reach the bottom of the crack simultaneously, due to the different water absorption times of the cotton strips at different positions, relying on the water absorption of the cotton strips to judge the crack depth will produce a large error, resulting in a significant reduction in the accuracy of the measurement results. This error has a great impact on the assessment of the tunnel crack condition, causing technicians to misjudge the severity and development trend of the cracks, and thus affecting the accuracy of subsequent maintenance decisions. Some potential safety hazards may therefore be ignored and cannot be discovered and handled in a timely manner, bringing great risks to the safe operation of the tunnel. Summary of the Invention

[0004] To solve the problems of the existing devices for measuring the depth of highway tunnel cracks, such as limited scope of application and large measurement errors, for example, the method of judging crack depth by water absorption can only be used for measuring horizontal plane gaps, and large errors will occur when the cotton strips cannot reach the bottom of the crack simultaneously, affecting the assessment of the tunnel crack condition and subsequent maintenance decisions. The purpose of the present invention is to provide a device and method for measuring the depth of highway tunnel cracks. Through an adjustment component connected between the first measurement plate and the second measurement plate, the angle between the first measurement plate and the second measurement plate can be flexibly adjusted according to the outer contour shape of the tunnel crack, so as to be able to measure cracks of different shapes, and a moving rod connected to the first measurement plate and the second measurement plate can measure according to the depth and internal shape of the crack, enabling the staff to have a more intuitive understanding of the crack, and solving the problems of poor measurement adaptability and low data accuracy caused by the complex crack morphology in the traditional method.

[0005] The present invention is achieved by the following technical solutions:

[0006] A device for measuring the depth of cracks in a highway tunnel, comprising:

[0007] A measuring component, the measuring component includes a first measuring plate and a second measuring plate, the second measuring plates are symmetrically arranged on both sides of the first measuring plate, and the second measuring plates on both sides are respectively rotatably connected to the upper and lower sides of the first measuring plate through an adjusting component, so that the first measuring plate and the second measuring plate match the outer contour shape of the tunnel crack;

[0008] A moving rod, the moving rod is inserted into the through holes of the first measuring plate and the second measuring plate to form the inner contour shape of the tunnel crack.

[0009] In this solution, the measuring component is combined with a rotatable first measuring plate and a second measuring plate, which can flexibly adjust the angle according to the outer contour shape of the tunnel crack, realize the precise matching of the crack opening form, so as to adapt to complex cracks with different widths, angles or curvatures. The moving rod is inserted into the through holes of the measuring plate, can move freely along the inside of the crack and form an inner contour prototype. Combining with the outer contour matching function of the measuring plate, it realizes the intuitive presentation and precise measurement of the three-dimensional form of the crack, effectively solving the technical problems that traditional equipment cannot adapt to non-planar cracks, has large measurement errors and lacks visualization.

[0010] As a further solution of the measuring device, the measuring device further includes a fixing component, and the fixing component is connected to the upper surface of the first measuring plate;

[0011] Wherein, the fixing component includes a first fixing component and a second fixing component, and the first fixing component and the second fixing component driven by a transmission mechanism move synchronously and abut against the tunnel walls on both sides of the tunnel crack.

[0012] In this solution, the fixing component is connected to the upper surface of the first measuring plate. The first fixing component and the second fixing component it includes are driven by a transmission mechanism, and can move synchronously and abut against the tunnel walls on both sides of the tunnel crack. This enables the measuring device to be more stably fixed at the crack when measuring the crack depth, preventing the device from shaking or displacing during the measurement process, thereby improving the measurement accuracy.

[0013] As a further solution of the measuring device, both the first fixing component and the second fixing component include transducers. The first fixing component further includes a first connecting rod, and the second fixing component further includes a second connecting rod;

[0014] Wherein, one ends of the first connecting rod and the second connecting rod are respectively threadedly connected to the corresponding transducers, the transducers abut against the tunnel walls of the tunnel crack, and the other ends of the first connecting rod and the second connecting rod are connected to the transmission mechanism.

[0015] In this solution, the first connecting rod and the second connecting rod are respectively threadedly connected to the transducer. On the one hand, it is convenient to adjust the position and angle of the transducer according to actual measurement requirements, ensuring that it can accurately abut against the tunnel wall of the tunnel crack and be in close contact with the crack, so as to effectively receive and transmit signals to measure the crack depth. On the other hand, the other ends of the first and second connecting rods are connected to the transmission mechanism, so that under the drive of the transmission mechanism, the two transducers can move synchronously. In this way, when facing cracks of different widths, the transducers can be quickly and accurately moved to the appropriate positions for measurement, ensuring the efficiency of the measurement process and the accuracy of the measurement results, and improving the measurement ability of the entire measurement device in a complex crack environment.

[0016] As a further solution of the measurement device, both the first connecting rod and the second connecting rod are U-shaped rods, and the transmission mechanism includes a fixed block;

[0017] Among them, two groups of the fixed blocks are symmetrically arranged and connected to the upper surface of the first measuring plate. A cavity is also opened inside the fixed block, and a transmission gear is placed in the middle of the cavity of the fixed block;

[0018] The U-shaped open ends of the first connecting rod and the second connecting rod are respectively inserted into the cavities of the two groups of fixed blocks and meshed with the transmission gear.

[0019] In this solution, the first connecting rod and the second connecting rod adopt a U-shaped rod design, and their U-shaped open ends are meshed with the transmission gears in the cavities of the fixed blocks. The fixed blocks are symmetrically arranged on the upper surface of the first measuring plate. When a force is applied to one of the connecting rods, through the action of the transmission gear, the other connecting rod will move synchronously, thereby driving the transducers connected thereto to move synchronously. This synchronous movement ensures that the two transducers can approach or move away from the tunnel walls on both sides of the tunnel crack simultaneously and at equal distances, guaranteeing the symmetry and accuracy of the measurement. Moreover, the setting of the fixed blocks not only provides an installation space for the transmission gears, but also closely combines the transmission mechanism with the measuring plate, enhancing the structural stability of the entire device. When measuring the crack depth in a complex tunnel environment, the device can operate reliably, effectively avoiding measurement errors caused by unstable structure or asynchronous transmission, and greatly improving the practicality and reliability of the measurement device.

[0020] As a further solution of the measurement device, the cavity of the fixed block is sleeved on the outer wall of the moving rod, and the moving rod moves in the fixed block.

[0021] In this solution, the fixed block serves as the installation carrier of the transmission gear, and its cavity provides a guiding channel for the moving rod, enabling the moving rod to freely slide along the preset path inside the fixed block when inserted into the crack without affecting the transmission gear to drive the first and second connecting rods to move synchronously.

[0022] As a further solution for the measuring device, scales are provided on the front sides of both the first connecting rod and the second connecting rod.

[0023] In this solution, when using the device to measure the depth of tunnel cracks, the staff can intuitively and accurately judge the moving distance of the transducer on both sides of the tunnel crack based on the scales on the connecting rod. In the measurement scenarios of cracks with different widths, the position of the transducer can be accurately adjusted according to the scales, ensuring that the two transducers approach or move away from the two side walls of the crack synchronously and equidistantly, and guaranteeing the symmetry and accuracy of the measurement. At the same time, these scales can also provide a reference basis for the measurement results. Combining the data measured by the transducer, the crack situation can be further analyzed and evaluated. For example, by comparing the scales with the depth data measured by the transducer, the internal structure and morphological changes of the crack can be better judged, thereby improving the reliability and practicality of the measurement results and assisting the staff to complete the measurement of the tunnel crack depth more efficiently and accurately.

[0024] As a further solution for the measuring device, grooves are provided at both the top and bottom of the first measuring plate. One end of the second measuring plate on one side extends a convex block that matches the top groove, and one end of the second measuring plate on the other side extends a convex block that matches the bottom groove. One side of each convex block is connected to the adjusting component, and the adjusting component is rotatably connected to the grooves at the top and bottom of the first measuring plate.

[0025] In this solution, the grooves at the top and bottom of the first measuring plate cooperate with the matching convex blocks extended from one end of the second measuring plate, providing the basic structure for the rotation of the second measuring plate. The adjusting component connected to one side of the convex block is rotatably connected to the groove, and the staff can flexibly adjust the angle of the second measuring plate relative to the first measuring plate through the adjusting component. When facing cracks with different widths, inclinations or curvatures, the second measuring plate can be rotated to a suitable position to better match the outer contour shape of the tunnel crack with the first measuring plate and the second measuring plate. In this way, the measuring device fits better with the crack, which helps to perform operations such as more accurate measurement of the crack depth subsequently.

[0026] As a further solution for the measuring device, the adjusting component includes a limit block, which is sleeved on the groove and moves back and forth in the groove;

[0027] Wherein, convex teeth are provided on the side wall surface of the groove, and a spring member is provided directly opposite the convex teeth. The front and back sides of the limit block are respectively connected to the convex teeth and the spring member.

[0028] In this solution, the limit block is sleeved on the groove and can move back and forth therein, providing a flexible operation method for the angle adjustment between the first measuring plate and the second measuring plate, enabling the device to be precisely adapted according to the actual shape of the crack. The convex teeth on the side wall of the groove are connected to the rear side of the limit block, playing a key role in positioning and angle fixation, so that the adjusted angle of the measuring plate can be stably maintained, preventing the angle from changing due to the shaking of the device during the measurement process and affecting the measurement accuracy. The spring member arranged opposite to the convex teeth is connected to the front side of the limit block, not only providing a certain buffer for the limit block to avoid damage caused by hard collision with the convex teeth, but also enabling the limit block to always be in close contact with the convex teeth through the elastic action of the spring when the device is subjected to external forces such as vibration, further enhancing the stability of the angle of the measuring plate.

[0029] As a further solution of the measuring device, a plurality of through holes are equidistantly arranged on the first measuring plate and the second measuring plate. The through holes are of special-shaped structures, matching the cross-sectional shape of the moving rod, and an induction probe is provided at one end of the moving rod away from the first measuring plate and the second measuring plate.

[0030] In this solution, when measuring the tunnel crack, the staff can flexibly adjust the position of the moving rod in the through hole according to the actual situation of the crack to better fit the internal shape of the crack. When the moving rod penetrates into the crack, the induction probe can collect relevant data inside the crack in real time, such as depth, width change, etc., and can more accurately capture the three-dimensional information of the crack, effectively improving the accuracy and comprehensiveness of the measurement, enabling the staff to more clearly understand the actual situation of the tunnel crack and providing a reliable basis for subsequent tunnel maintenance and repair work.

[0031] A method for measuring the depth of highway tunnel cracks includes a device for measuring the depth of highway tunnel cracks. The steps of measuring the depth of highway tunnel cracks by this device are as follows:

[0032] S1: According to the shape of the tunnel crack, adjust the angle between the first measuring plate and the second measuring plate through the adjusting component;

[0033] S2: Pull the first connecting rod to one side to move the transducer to the place of use. At the same time, the first connecting rod drives the second connecting rod to move synchronously through the transmission gear connected in the fixed block;

[0034] S3: Abut the first measuring plate and the second measuring plate against the tunnel wall, insert the moving rod into the crack, and move in the first measuring plate and the second measuring plate according to the depth of the crack. The induction probe at one end of the moving rod transmits the measurement data to the external device, and the other end of the moving rod presents the crack prototype according to the crack depth;

[0035] S4: Rotate the transducer, press the transducer against the tunnel wall, measure the crack depth again, and finally obtain detailed data on the tunnel crack depth.

[0036] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0037] Through the adjustable measuring component of the present invention, that is, the first measuring plate and the second measuring plate can flexibly change the angle between them according to the crack shape with the help of the adjusting component, perfectly matching the outer contours of various cracks, greatly expanding the applicable range of the measuring device;

[0038] The present invention adopts a dual measurement method of a moving rod and a transducer. The moving rod is inserted into the crack, and the induction probe at its end can collect data in real time and transmit it to an external device. At the same time, the transducer is pressed against the tunnel wall for re-measurement. The two confirm each other, effectively improving the accuracy of the crack depth measurement data;

[0039] The present invention is provided with a fixing component. Among them, the first and second fixing components drive the transducer to move synchronously under the drive of the transmission mechanism, avoiding the trouble of manual line drawing and alignment, and significantly improving the operation convenience and work efficiency of the staff. In addition, the scales on the first and second connecting rods also facilitate the staff to intuitively judge the moving distance of the transducer, further improving the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, form a part of this application, and do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0041] Figure 1 is a schematic diagram of the overall structure of the first perspective of the present invention;

[0042] Figure 2 is a schematic diagram of the overall structure of the second perspective of the present invention;

[0043] Figure 3 is an exploded schematic diagram of the overall structure of the present invention;

[0044] Figure 4 is a schematic diagram of the overall structure of the third perspective of the present invention;

[0045] Figure 5 is an exploded schematic diagram of the measuring component of the present invention;

[0046] Figure 6 is a schematic diagram of the structure of the first measuring plate and the second measuring plate of the present invention;

[0047] Figure 7 is an exploded schematic diagram of the fixing component of the present invention;

[0048] Figure 8Schematic diagram of the transmission structure of the fixing block and the transmission gear of the present invention.

[0049] Markings in the drawings and corresponding component names:

[0050] 1 - First measuring plate, 2 - Second measuring plate, 3 - Moving rod, 4 - First connecting rod, 5 - Second connecting rod, 6 - Transducer, 7 - Fixing block, 8 - Limiting block, 9 - Transmission gear. Specific embodiments

[0051] To make the objectives, technical solutions, and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with embodiments and the accompanying drawings. The illustrative embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0052] Embodiment 1

[0053] Embodiment 1 of the present invention provides a highway tunnel crack depth measurement device, as Figure 1 shown, including a measurement component, a fixing component, and a moving rod 3.

[0054] Among them, please refer to Figures 1 - 6 shown, the measurement component includes a first measuring plate 1 and a second measuring plate 2. The second measuring plates 2 are symmetrically connected to both sides of the first measuring plate 1. The second measuring plates 2 located on both sides are respectively rotationally connected to the upper and lower sides of the first measuring plate 1 through an adjustment component, so that the first measuring plate 1 and the second measuring plate 2 match the outer contour shape of the tunnel crack. The moving rod 3 is inserted into the through holes of the first measuring plate 1 and the second measuring plate 2 and freely moves along the inside of the crack to form an inner contour prototype. Combining with the outer contour matching function of the measuring plate, the three-dimensional shape of the crack can be visually presented and accurately measured.

[0055] Specifically, grooves are provided at both the top and bottom of the first measuring plate 1. A plurality of through holes are equidistantly provided on the first measuring plate 1 and the second measuring plate 2. The moving rod 3 is inserted into the through holes provided on the first measuring plate 1 and the second measuring plate 2 and moves in the through holes. One end of the moving rod 3 away from the first measuring plate 1 and the second measuring plate 2 is provided with an induction probe. Here, the through holes of the first measuring plate 1 and the second measuring plate 2, and the middle part of the moving rod 3 are all set in a special shape to prevent the moving rod 3 from moving out of the first measuring plate 1 and the second measuring plate 2. Among them, the induction probe connected to the moving rod 3 can send the insertion depth of the moving rod 3 to an external device, which is convenient for the staff to sort out and view. When in use, the first measuring plate 1 and the second measuring plate 2 are abutted against the tunnel wall, the moving rod 3 is inserted into the gap, and the moving rod 3 moves on the first measuring plate 1 and the second measuring plate 2 according to the depth and internal shape of the gap, and finally the depth of the gap is measured.

[0056] At the same time, as Figure 3 andFigure 5 As shown, at one end of the second measuring plate 2 on one side of the first measuring plate 1, there is a convex block that matches the top groove of the first measuring plate 1, and at one end of the second measuring plate 2 on the other side, there is a convex block that matches the bottom groove of the first measuring plate 1. One side of each convex block is connected with an adjusting component, and the adjusting component is rotatably connected in the grooves at the top and bottom of the first measuring plate 1.

[0057] In this embodiment, the adjusting component includes a limit block 8. The side wall surface of the above groove is connected with convex teeth, and a spring member is arranged directly opposite the convex teeth. The front side of the limit block 8 meshes with the convex teeth, and the rear side of the limit block 8 is connected with the spring member. The spring member keeps the limit block 8 in close contact with the convex teeth all the time; when the gap is relatively wide, the first measuring plate 1 and the second measuring plate 2 are arranged horizontally to measure the relatively wide gap. When the gap is relatively narrow and relatively long, the staff moves the second measuring plate 2 forward by a certain distance, so that at this time, the second measuring plate 2 drives the limit block 8 to move out of the convex teeth at the end of the first measuring plate 1, and the limit block 8 squeezes the spring member. The staff can then rotate the second measuring plate 2 connected to the upper part of the first measuring plate 1 upward, and the top of the second measuring plate 2 is clamped on the first measuring plate 1. Rotate the second measuring plate 2 connected to the lower part of the first measuring plate 1 downward, and clamp the bottom of the second measuring plate 2 on the bottom of the first measuring plate 1 to form a long strip shape. Subsequently, stop applying force to the second measuring plate 2, and the limit block 8 re-engages and limits with the convex teeth on the first measuring plate 1. Since the second measuring plate 2 rotates around the limit block 8, the first measuring plate 1 and the second measuring plate 2 do not completely fit, but it does not affect the overall use effect and can be ignored.

[0058] Among them, please refer to Figures 1 - 4 As shown, the fixing component is connected to the upper surface of the first measuring plate 1. The fixing component includes a first fixing component and a second fixing component, and the first fixing component and the second fixing component are driven by a transmission mechanism to move synchronously and abut against the tunnel walls on both sides of the tunnel crack.

[0059] Specifically, both the first fixing component and the second fixing component include a transducer 6. The first fixing component further includes a first connecting rod 4, and the second fixing component further includes a second connecting rod 5. Both the first connecting rod 4 and the second connecting rod 5 are U-shaped rods. The transmission mechanism includes a fixing block 7. Two groups of fixing blocks 7 are symmetrically arranged and connected to the upper surface of the first measuring plate 1. A cavity is also opened inside the fixing block 7. As Figure 8 shown, the middle of this cavity runs through. A transmission gear 9 is placed in the middle of the cavity of the fixing block 7. The middle of the fixing block 7 is sleeved on the outer wall of the moving rod 3, that is, it passes through the middle of the transmission gear 9. The moving rod 3 moves in the fixing block 7 and the transmission gear 9. Through the fixing block 7 connected to the first measuring plate 1, the first connecting rod 4 and the second connecting rod 5 can be limited.

[0060] At the same time, as Figure 7As shown, one end of the first connecting rod 4 and the second connecting rod 5 is connected to the fixed block 7. Tooth grooves are provided on the sides of the first connecting rod 4 and the second connecting rod 5 close to the fixed block 7. The ends of the first connecting rod 4 and the second connecting rod 5 far from the fixed block 7 are connected to the transducer 6. Right-angle hooks extend from the ends of the first connecting rod 4 and the second connecting rod 5 close to the fixed block 7, which can prevent the first connecting rod 4 and the second connecting rod 5 from slipping out of the fixed block 7 during movement. Moreover, the first connecting rod 4 and the second connecting rod 5 are connected to the middle of the fixed block 7, avoiding obstruction to the adjustment of the second measuring plate 2.

[0061] In this embodiment, the ends of the above-mentioned first connecting rod 4 and second connecting rod 5 far from the transducer 6 are inserted into the cavities above and below the transmission gear 9. At this time, the transmission gear 9 meshes with the tooth grooves on the first connecting rod 4 and the second connecting rod 5. When in use, the staff pulls the first connecting rod 4 outwards, and the first connecting rod 4 drives the second connecting rod 5 to move in the opposite direction of the first connecting rod 4 through the transmission gear 9. At this time, the first connecting rod 4 and the second connecting rod 5 drive the transducer 6 to move to the place of use. When the transducer 6 needs to be retracted, the staff pushes the first connecting rod 4, and the first connecting rod 4 drives the second connecting rod 5 to move relatively through the transmission gear 9. Moreover, scales are provided on the front sides of the first connecting rod 4 and the second connecting rod 5, avoiding the trouble of the staff still needing to measure and mark.

[0062] In this embodiment, please refer to Figure 7 As shown, external threads are provided on the inner walls of the ends of the above-mentioned first connecting rod 4 and second connecting rod 5 far from the fixed block 7, and a thread groove is provided on the outer wall of the transducer 6. The thread groove on the transducer 6 is connected to the external threads on the first connecting rod 4 and the second connecting rod 5. The front side of the transducer 6 is connected to an external device. Through the connection method of the first connecting rod 4, the second connecting rod 5 and the transducer 6, the transducer 6 can be adjusted according to the use environment, avoiding interference with the movement of other components, greatly increasing the flexibility of the device. When in use, by rotating the transducer 6 to one side, the transducer 6 is moved towards the side of the first measuring plate 1 and abuts against the tunnel wall. When not in use, the transducer 6 can be rotated in the reverse direction.

[0063] Embodiment 2

[0064] Embodiment 2 of the present invention provides a method for measuring the depth of cracks in a highway tunnel, including a device for measuring the depth of cracks in a highway tunnel as described in Embodiment 1. The steps for measuring the depth of cracks in a highway tunnel by this device are as follows:

[0065] S1: According to the shape of the tunnel crack, adjust the angle between the first measuring plate 1 and the second measuring plate 2 through the adjusting component;

[0066] Specifically, place the measuring component at the opening of the tunnel crack. According to the actual shape of the crack, manually operate the adjusting component, that is, push the limit block 8 to slide in the groove. When reaching the appropriate angle, utilize the cooperation of the convex teeth and the spring member to lock the angle between the second measuring plate 2 and the first measuring plate 1, so that the first measuring plate 1 and the second measuring plate 2 closely fit the outer contour of the crack, thereby accurately matching the crack opening shape.

[0067] S2: Pull the first connecting rod 4 to one side to move the transducer 6 to the usage position. At the same time, the first connecting rod 4 drives the second connecting rod 5 to move synchronously through the transmission gear 9 connected in the fixed block 7.

[0068] Specifically, start the transmission mechanism, and the transmission mechanism will drive the first connecting rod 4 and the second connecting rod 5 to move synchronously. Since the first connecting rod 4 and the second connecting rod 5 are respectively connected to the transducer 6, under the action of the transmission mechanism, the transducer 6 will stably abut against the tunnel walls on both sides of the tunnel crack as the connecting rods move.

[0069] S3: Abut the first measuring plate 1 and the second measuring plate 2 against the tunnel wall, insert the moving rod 3 into the crack, and move it in the first measuring plate 1 and the second measuring plate 2 according to the depth of the crack. The induction probe at one end of the moving rod 3 transmits the measurement data to an external device, and the other end of the moving rod 3 presents the prototype of the crack according to the crack depth.

[0070] Specifically, insert the moving rod 3 into the crack from the through hole of the measuring plate. The end of the moving rod 3 is provided with an induction probe. During the process of the moving rod 3 slowly advancing along the crack, the induction probe real-time collects the depth data inside the crack and transmits these data to an external data receiving and processing device in a wireless or wired manner. The moving trajectory of the moving rod 3 in the through hole will also synchronously form the prototype of the inner contour of the crack, providing an intuitive basis for subsequent analysis.

[0071] S4: Rotate the transducer, abut the transducer against the tunnel wall, and measure the crack depth again to finally obtain the detailed data of the tunnel crack depth.

[0072] Specifically, after the transducer 6 abuts against the tunnel wall, it will emit and receive acoustic wave signals. By analyzing parameters such as the propagation time and reflection intensity of the acoustic waves in the crack medium, further obtain the internal structure information of the crack, such as the depth of the crack, whether there are branches, etc. These data are mutually verified with the data collected by the induction probe of the moving rod 3 to improve the accuracy of the measurement results.

[0073] The specific embodiments described above further elaborate on the objective, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only for the specific embodiments of the present invention and is not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for measuring the depth of cracks in a highway tunnel, characterized in that, Comprising: A measuring component, which includes a first measuring plate (1) and second measuring plates (2) symmetrically arranged on the upper and lower sides of the first measuring plate (1). The second measuring plates (2) on both sides are respectively rotationally connected to the top and bottom of the first measuring plate (1) through adjusting components; Wherein, the adjusting component includes a limiting block (8), convex teeth and a spring member. The convex teeth are arranged on the inner wall of the groove of the first measuring plate (1). The limiting block (8) is sleeved in the groove and is engaged with the convex teeth. The spring member abuts against the limiting block (8) to maintain the engaged state, so that the first measuring plate (1) and the second measuring plate (2) rotate synchronously to match the outer contour shape of the tunnel crack; A moving rod (3), which is inserted into the special-shaped through holes of the first measuring plate (1) and the second measuring plate (2). The cross-sectional shape of the special-shaped through hole matches that of the moving rod (3). And one end of the moving rod (3) away from the measuring plate is integrated with an induction probe, which is used to collect the three-dimensional coordinate data of the crack inner wall in real time and transmit it to an external processing terminal.

2. The depth measurement device for cracks in a highway tunnel according to claim 1, wherein, The measuring device further includes a fixing component, and the fixing component is connected to the upper surface of the first measuring plate (1); Wherein, the fixing component includes a first fixing component and a second fixing component. The first fixing component and the second fixing component driven by a transmission mechanism move synchronously and abut against the tunnel walls on both sides of the tunnel crack.

3. The highway tunnel crack depth measuring device according to claim 2, wherein, Both the first fixing component and the second fixing component include a transducer (6). The first fixing component further includes a first connecting rod (4), and the second fixing component further includes a second connecting rod (5); Wherein, one ends of the first connecting rod (4) and the second connecting rod (5) are respectively threadedly connected to the corresponding transducers (6). The transducers (6) abut against the tunnel wall of the tunnel crack. The other ends of the first connecting rod (4) and the second connecting rod (5) are connected to the transmission mechanism.

4. The depth measuring device for highway tunnel cracks according to claim 3, characterized in that, Both the first connecting rod (4) and the second connecting rod (5) are U-shaped rods, and the transmission mechanism includes a fixing block (7); Wherein, two groups of fixing blocks (7) are symmetrically arranged and connected to the upper surface of the first measuring plate (1). A cavity is further opened in the middle of the cavity of the fixing block (7), and a transmission gear (9) is placed in the middle of the cavity of the fixing block (7); The U-shaped open ends of the first connecting rod (4) and the second connecting rod (5) are respectively inserted into the cavities of the two groups of fixing blocks (7) and are engaged with the transmission gear (9).

5. The depth measuring device for highway tunnel cracks according to claim 4, wherein, The cavity of the fixing block (7) is sleeved on the outer wall of the moving rod (3), and the moving rod (3) moves in the fixing block (7).

6. The highway tunnel crack depth measuring device according to claim 4, characterized in that, Scales are provided on the front sides of both the first connecting rod (4) and the second connecting rod (5).

7. A highway tunnel crack depth measurement device according to any one of claims 1-6, characterized in that, The top and bottom of the first measuring plate (1) are both provided with the grooves. One end of the second measuring plate (2) on one side extends a convex block matching the top groove, and one end of the second measuring plate (2) on the other side extends a convex block matching the bottom groove. One side of each convex block is connected with the adjusting component, and the adjusting component is rotatably connected in the grooves at the top and bottom of the first measuring plate (1).

8. A method for measuring the depth of cracks in a highway tunnel, characterized in that, Adopt a highway tunnel crack depth measuring device as described in claim 7. The steps of measuring the depth of highway tunnel cracks by this device are as follows: S1: According to the shape of the tunnel crack, adjust the angle between the first measuring plate (1) and the second measuring plate (2) through the adjusting component; S2: Pull the first connecting rod (4) to one side to move the transducer (6) to the using position. At the same time, the first connecting rod (4) drives the second connecting rod (5) to move synchronously through the transmission gear (9) connected in the fixing block (7); S3: Abut the first measuring plate (1) and the second measuring plate (2) against the tunnel wall. The moving rod (3) is inserted into the crack and moves in the first measuring plate (1) and the second measuring plate (2) according to the depth of the crack. The induction probe at one end of the moving rod (3) transmits the measurement data to the external device, and the other end of the moving rod (3) presents the crack prototype according to the crack depth; S4: Rotate the transducer (6) and abut the transducer (6) against the tunnel wall to measure the crack depth again, and finally obtain the detailed data of the tunnel crack depth.

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