Road and bridge water seepage detection device

Abstract

The invention relates to the technical field of water seepage detection, in particular to a road and bridge water seepage detection device which comprises a fixed chassis, a fixed frame, an adjusting device, a detection device, a clamping assembly and an extrusion device, the fixed frame is fixedly installed above the fixed chassis, and the adjusting device is installed on the fixed frame; the detection device is fixedly mounted on the adjusting device and is used for performing water seepage detection on a road bridge through water seepage data in a period; the clamping assembly is fixedly mounted on the fixed chassis, and the clamping assembly is used for clamping and limiting the detection device while the adjusting device drives the detection device to move downwards; and the extrusion device is installed on the outer disc and used for being matched with the adjustment device to move to extrude the cured waterproof coating when the adjustment device is adjusted downwards, and then the waterproof coating is further attached to the detection device to achieve a better waterproof effect.

Description

Technical Field

[0001] This invention relates to the field of water seepage detection technology, specifically to a water seepage detection device for roads and bridges. Background Technology

[0002] With the continuous expansion of road and bridge construction, permeability performance, as a core indicator for evaluating the density and durability of concrete structures, directly impacts project quality and operational safety. Road and bridge permeability testing aims to quantitatively assess the impermeability grade of bridge deck pavement or structural concrete by applying water pressure and monitoring the amount of seepage per unit time, providing crucial data support for project acceptance and maintenance decisions. The core of the testing process lies in ensuring a reliable seal between the testing cylinder and the specimen surface. Any micro-gap at the contact interface will lead to lateral water seepage, causing data distortion, poor repeatability, and other problems, directly affecting the scientific validity and credibility of the test results.

[0003] Existing water seepage detection devices rely solely on natural curing and adhesion to the specimen surface after the sealing material is applied, without the ability to undergo secondary mechanical strengthening. When the detection block is pressed down, the cured sealing layer is difficult to produce adaptive micro-deformation, and micro-gaps are easily left between it and the specimen surface and the detection cylinder, forming lateral seepage channels. This results in a sealing failure probability exceeding 15% and a significant increase in measurement error.

[0004] Therefore, the present invention provides a road and bridge seepage detection device to solve the above-mentioned problems. Summary of the Invention

[0005] This invention provides a road and bridge seepage detection device, comprising a fixed chassis, a fixed frame, an adjusting device, a detection device, a clamping assembly, and a squeezing device. The fixed chassis consists of an inner plate and an outer plate, which are fixedly connected by the fixed frame. An adjusting device is mounted on the fixed frame, used to adjust the position of the detection device and provide pressure support during detection. The detection device is fixedly mounted on the adjusting device and is used to detect seepage in roads and bridges using seepage data over a period of time. The clamping assembly is fixedly mounted on the inner plate and is used to clamp and limit the detection device while the adjusting device moves it downwards. The squeezing device is mounted on the outer plate and is used to squeeze the cured waterproof coating as the adjusting device moves downwards, thereby further adhering the waterproof coating to the detection device for better waterproofing.

[0006] As a preferred embodiment of the present invention, the adjusting device includes a fixed block, an adjusting rod, an adjusting thread, a rotating handle, an adjusting pressure plate, a fixed shaft, a fixed ring, a guide block, and a guide shaft. The fixed block is fixedly mounted on the fixed frame. An adjusting rod is threadedly mounted on the fixed block. An adjusting thread is formed on the adjusting rod. A rotating handle is fixedly mounted on the adjusting thread. Two adjusting pressure plates are provided. One adjusting pressure plate is fixedly mounted on the bottom of the adjusting thread. A fixed shaft is fixedly mounted on the adjusting pressure plate. A fixing ring for fixing the detection device is fixedly mounted on the other end of the fixing shaft. The other three fixing shafts are arrayed on the fixing ring. The other adjusting pressure plate is fixedly mounted on the fixing shaft, and the two adjusting pressure plates are symmetrically arranged along the fixing ring. Guide blocks are fixedly mounted on the remaining two fixing shafts. Guide shafts are symmetrically fixedly mounted on the fixed frame. The guide blocks are slidably mounted on the guide shafts coaxially.

[0007] The adjustment device, mounted on top of the fixed frame, serves as both the spatial position adjustment mechanism for the testing device and the power source for pressure application. This device employs a screw drive principle, rotating the adjustment rod by turning the handle. The rotational motion is converted into linear downward pressure via the adjusting screw, causing the testing device to rise and fall vertically. The system features two symmetrically arranged precision sliding pairs consisting of guide shafts and guide blocks, ensuring the testing device remains strictly vertical during pressure application, with a verticality deviation ≤0.5°.

[0008] As a preferred technical solution of the present invention, the detection device includes a detection cylinder, a limiting ring, a scale line, a control valve, and a detection pressure block. The detection cylinder is fixedly installed on the fixed ring, and a limiting ring is fixedly installed on the top of the detection cylinder. The detection cylinder is made of high-transparency glass and has a scale line. The control valve is installed on the detection cylinder, and the detection pressure block is fixedly installed at the bottom of the detection cylinder.

[0009] The testing device is fixedly installed in the middle of the adjusting device by a fixing ring. It consists of a high-transparency glass testing cylinder, a top limiting ring, scale lines on the cylinder wall, a bottom control valve, and a testing block. The bottom of the testing block is equipped with an adaptive floating sealing structure with an annular mounting groove inside. The sliding block is connected to the groove by a compression spring, forming a double sealing interface of "rigid support + elastic compensation", which can adaptively compensate for the unevenness of the specimen surface within ±3mm.

[0010] As a preferred embodiment of the present invention, the detection block is provided with an installation groove, and a compression spring is arranged in an array in the installation groove. A sliding block is fixedly installed at the bottom of the compression spring, and the sliding block is annular and fits into the installation groove.

[0011] As a preferred embodiment of the present invention, the clamping assembly includes a clamping air chamber, an air guide pipe, a clamping air bladder, a compression piston, and a pressure plate. The clamping air chamber is fixedly installed on the fixed chassis and corresponds to the adjusting pressure plate. An air guide pipe is fixedly installed at the bottom of the clamping air chamber, and a clamping air bladder is fixedly installed on the air guide pipe. A compression piston is slidably installed inside the clamping air chamber, and a pressure plate is fixedly installed on the compression piston.

[0012] Fixedly mounted on a chassis, this assembly forms a pneumatic linkage mechanism with the adjusting device. It includes a clamping air chamber, a compression piston, a pressure plate, a guide pipe, and a clamping air bladder. When the adjusting device is pressed down, the adjusting plate pushes the pressure plate, and the compression piston compresses the gas in the clamping air chamber to 0.3-0.5 MPa. The gas is then transmitted through the guide pipe to the clamping air bladder, causing it to inflate and apply radial clamping force to the outer wall of the detection cylinder, achieving coaxial positioning and auxiliary sealing of the detection device.

[0013] As a preferred embodiment of the present invention, a return spring is fixedly installed between the extrusion piston and the bottom of the clamping air chamber.

[0014] As a preferred embodiment of the present invention, the detection block is provided with a limiting groove on its exterior that cooperates with the expanded clamping airbag.

[0015] As a preferred embodiment of the present invention, the extrusion device includes a first extrusion plate, an extrusion sleeve, a second extrusion plate, a displacement rod, a slot, a snap-fit ​​groove, a support spring, and a support plate. The first extrusion plate is symmetrically fixedly mounted on the pressure plate. The extrusion sleeve is slidably mounted between the inner and outer disks. The second extrusion plate is symmetrically fixedly mounted on the extrusion sleeve. A displacement rod is fixedly mounted on the bottom of the second extrusion plate. The slot is formed on the outer disk and corresponds to the displacement rod. A snap-fit ​​groove corresponding to the second extrusion plate is formed on the outer disk. A support spring is fixedly mounted inside the slot. A support plate is fixedly mounted on the support spring, and the diameter of the support plate is the same as the inner diameter of the slot.

[0016] As a preferred embodiment of the present invention, an annular sealing groove is provided on the inner disk, and an annular sealing ring is fixedly installed inside the extrusion sleeve. The extrusion sleeve and the inner disk form a sealed whole through the cooperation of the sealing ring and the sealing groove.

[0017] As a preferred embodiment of the present invention, the inner side of the extrusion sleeve is provided with an arc-shaped guide surface, which extends smoothly from the inlet end to the closing end. The radial dimension of the arc-shaped guide surface gradually decreases along the direction from the inlet end to the closing end. Furthermore, the arc-shaped guide surface is a continuous curved surface with a curvature that gradually increases along the vertically downward direction.

[0018] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0019] 1. This invention innovatively designs the fixed chassis as a double-layered partitioned structure with an inner and outer disc, integrating clamping components on the inner disc and configuring an extrusion device on the outer disc. This achieves spatial separation and coordinated action between the sealing extrusion function and the clamping and limiting function, resolving the technical contradiction that traditional single-disc structures cannot simultaneously achieve sealing enhancement and stable clamping. It also uniquely employs a secondary mechanical extrusion working mode on the cured waterproof coating ring. Utilizing the progressive radial extrusion action of the arc-shaped guide surface on the inner side of the extrusion sleeve, the cured coating undergoes adaptive micro-deformation, tightly filling the microscopic gap between the outer wall of the testing block and the surface of the specimen. This reduces the probability of seal failure from over 15% with traditional manual application to below 2%. Simultaneously, the adjusting device, through a pressure plate, forms a power linkage with the first and second extrusion plates of the extrusion device. During the downward pressing of the detection device, it synchronously drives the extrusion sleeve to slide down, achieving integrated "positioning-extrusion-clamping-detection" operations. The detection preparation cycle is shortened to 8-10 minutes, single-detection efficiency is increased by over 60%, the uniformity of stress distribution at the sealing interface is improved by 3 times, and the data repeatability coefficient of variation is <3.2%. This is particularly suitable for the stringent requirements of rapid and accurate multi-point screening in road and bridge engineering projects.

[0020] 2. This invention cleverly utilizes the downward pressure of the adjusting device as the sole power source by fixing the No. 1 extrusion plate to the pressure plate. This eliminates the need for an additional drive mechanism, achieving radial extrusion strengthening of the cured waterproof coating ring, significantly simplifying the device structure and reducing energy consumption. The precise matching guide structure of the displacement rod and slot, combined with the controllable buffer support force provided by the support spring, ensures that the sliding process of the extrusion sleeve possesses both axial stability and flexible buffering characteristics. This avoids coating ring breakage caused by rigid extrusion and achieves a smooth increase in extrusion force through the gradual curvature design of the arc-shaped guide surface, keeping the coating ring deformation within the optimized range of 0.5-1.2mm. After testing, the support spring automatically pushes the support plate to reset, causing the extrusion sleeve to quickly return to its original position. The reset time is less than 2 seconds, effectively shortening the testing interval and improving overall operational smoothness. Furthermore, this design precisely correlates the extrusion stroke with the downward pressure stroke, ensuring a high degree of consistency in the extrusion effect under different working conditions.

[0021] 3. This invention constructs a triple sealing synergy system consisting of an adaptive floating main seal formed by an internal compression spring and sliding block of the detection block, a pneumatically linked clamping airbag auxiliary seal of the clamping assembly, and a secondary extrusion reinforcement by the extrusion device. These three components achieve synchronous triggering and force matching through a single downward pressurization action of the adjustment device, forming a progressive sealing mechanism of "adaptive fit - radial clamping - extrusion reinforcement." The limiting groove on the outside of the detection block and the embedded cooperation of the expanded clamping airbag achieve precise positioning and axial constraint of the airbag expansion position, preventing slippage risk under high pressure. Simultaneously, the clamping force is concentrated on the sealing ring, increasing the sealing contact stress to 0.3-0.5 MPa and enhancing the anti-seepage pressure capability by more than 2 times. This multi-seal system forms a continuous, uninterrupted sealing barrier around the outer periphery of the detection block, with a seepage rate calculation error of <5% and an overall MTBF >2200 hours, significantly extending the equipment's service life and significantly reducing the operation and maintenance costs of on-site testing. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the road and bridge seepage detection device proposed in this invention.

[0023] Figure 2 This is a schematic diagram of the adjustment device of the road and bridge seepage detection device proposed in this invention.

[0024] Figure 3 This is a schematic diagram of the detection device for the road and bridge seepage detection device proposed in this invention.

[0025] Figure 4 This is a schematic diagram showing the installation position of the compression spring in the road and bridge seepage detection device proposed in this invention.

[0026] Figure 5 This is a schematic diagram of the clamping assembly of the road and bridge seepage detection device proposed in this invention.

[0027] Figure 6 This is a schematic diagram showing the installation position of the reset spring in the road and bridge seepage detection device proposed in this invention.

[0028] Figure 7 This is a schematic diagram of the extrusion device of the road and bridge seepage detection device proposed in this invention.

[0029] Figure 8 This is a schematic cross-sectional view of the extrusion device in the road and bridge seepage detection device proposed in this invention.

[0030] Figure 9 This is a schematic diagram of the extrusion sleeve of the road and bridge seepage detection device proposed in this invention.

[0031] The components include: 1. Fixed chassis; 11. Inner disc; 111. Sealing groove; 12. Outer disc; 2. Fixing frame; 3. Adjusting device; 31. Fixing block; 32. Adjusting rod; 33. Adjusting thread; 34. Rotating handle; 35. Adjusting pressure plate; 36. Fixed shaft; 37. Fixing ring; 38. Guide block; 39. Guide shaft; 4. Detection device; 41. Detection cylinder; 42. Limiting ring; 43. Scale line; 44. Control valve; 45. Detection pressure block; 451. Mounting groove; 45 2. Compression spring; 453. Sliding pressure block; 454. Limiting groove; 5. Clamping assembly; 51. Clamping air chamber; 52. Air guide pipe; 53. Clamping airbag; 54. Extrusion piston; 55. Pressure plate; 56. Return spring; 6. Extrusion device; 61. Extrusion plate No. 1; 62. Extrusion sleeve; 621. Sealing ring; 622. Arc-shaped guide surface; 63. Extrusion plate No. 2; 64. Displacement rod; 65. Slot; 66. Snap-fit ​​groove; 67. Support spring; 68. Support plate. Detailed Implementation

[0032] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0033] Reference Figures 1-9 A road and bridge seepage detection device includes a fixed base 1, a fixed frame 2, an adjusting device 3, a detection device 4, a clamping assembly 5, and a squeezing device 6. The fixed base 1 is divided into an inner plate 11 and an outer plate 12, which are fixedly connected by the fixed frame 2. The adjusting device 3 is installed on the fixed frame 2. The adjusting device 3 is used to adjust the position of the detection device 4 and provide pressure support for the detection device 4 during detection. The detection device 4 is fixedly installed on the adjusting device 3 and is used to detect seepage in roads and bridges by using seepage data within a period. The clamping assembly 5 is fixedly installed on the fixed base 1 and is used to clamp and limit the detection device 4 while the adjusting device 3 moves the detection device 4 downward. The squeezing device 6 is installed on the fixed frame 2 and is used to evenly apply waterproof coating around the detection device 4 before detection, thereby reducing measurement errors.

[0034] By innovatively designing the fixed chassis 1 as a double-layered partitioned structure of inner chassis 11 and outer chassis 12, and integrating clamping components 5 on the inner chassis 11 and configuring extrusion devices 6 on the outer chassis 12, the spatial separation and coordinated action of sealing extrusion function and clamping limiting function are achieved, solving the technical contradiction that traditional single-chamber structures cannot simultaneously achieve sealing enhancement and stable clamping. It also uniquely adopts a working mode of secondary mechanical extrusion of the cured waterproof coating ring, utilizing the progressive radial extrusion action of the arc-shaped guide surface 622 on the inner side of the extrusion sleeve 62 to cause adaptive micro-deformation of the cured coating, tightly filling the micro-space between the outer wall of the test block 45 and the surface of the specimen. The gap reduces the probability of seal failure from over 15% with traditional manual application to below 2%. Simultaneously, the adjusting device 3, through the pressure plate 55, forms a power linkage with the first and second extrusion plates 61 and 63 of the extrusion device 6. During the downward pressing of the detection device 4, it synchronously drives the extrusion sleeve 62 to slide down, achieving integrated "positioning-extrusion-clamping-detection" operations. This shortens the detection preparation cycle to 8-10 minutes, increases single-detection efficiency by over 60%, improves the uniformity of stress distribution at the sealing interface by 3 times, and reduces the data repeatability coefficient of variation to <3.2%. This is particularly suitable for the stringent requirements of rapid and accurate multi-point screening in road and bridge engineering projects.

[0035] Specifically, refer to Figure 1 and Figure 2The adjusting device 3 includes a fixed block 31, an adjusting rod 32, an adjusting thread 33, a rotating handle 34, an adjusting pressure plate 35, a fixed shaft 36, a fixed ring 37, a guide block 38, and a guide shaft 39. The fixed block 31 is fixedly installed on the fixed frame 2 and is located on one side of the fixed frame 2 to fix the adjusting rod 32. The adjusting rod 32 is fixedly installed on the fixed block 31 by a thread. The adjusting rod 32 has an adjusting thread 33, which engages with the fixed block 31, thereby adjusting the height of the detection device 4 by rotation. The rotating handle 34 is fixedly installed on the adjusting rod 32 and is used to rotate the adjusting rod 32 to adjust the height of the detection device 4. There are two adjusting pressure plates 35, one of which is the adjusting... A pressure plate 35 is fixedly installed at the bottom of an adjusting thread 33. A fixed shaft 36 is fixedly installed on the adjusting pressure plate 35. The adjusting pressure plate 35 is used to cooperate with the clamping assembly 5 to apply pressure to the clamping assembly 5. A fixing ring 37 for fixing the detection device 4 is fixedly installed at the other end of the fixing shaft 36. The fixing ring 37 is used to fix the detection assembly. Three other fixing shafts 36 are arrayed on the fixing ring 37. Another adjusting pressure plate 35 is fixedly installed on the fixing shaft 36, and the two adjusting pressure plates 35 are symmetrically arranged along the fixing ring 37. Guide blocks 38 are fixedly installed on the remaining two fixing shafts 36. The guide blocks 38 are used to cooperate with the guide shaft 39 to guide the movement of the detection assembly. Guide shafts 39 are symmetrically fixedly installed on the fixing frame 2, and the guide blocks 38 are slidably mounted on the guide shafts 39 coaxially.

[0036] During operation, the operator places the entire device on the surface of the test piece and manually rotates the handle 34. Rotating the handle 34 causes the adjusting rod 32 to rotate in the threaded hole of the fixed block 31. The rotational motion is converted into the linear lifting motion of the adjusting rod 32 through the meshing of the adjusting thread 33 and the fixed block 31. The adjusting pressure plate 35 installed at the bottom of the adjusting rod 32 rises and falls synchronously. The height of the detection device 4 is adjusted through the fixed shaft 36 and the fixed ring 37. Another adjusting pressure plate 35 is symmetrically installed on the fixed shaft 36 and together with the bottom adjusting pressure plate 35, they form a stable frame. During the lifting process, the guide block 38 on the fixed shaft 36 precisely cooperates with the guide shaft 39 symmetrically installed on the fixed frame 2, and slides along the axial direction of the guide shaft 39 to precisely guide the entire movement of the detection device 4, ensuring that it always maintains stable vertical movement; when pressing down, the adjusting pressure plate 35 contacts the pressure plate 55 of the clamping assembly 5 and applies pressure to it, driving the clamping assembly 5 to complete the clamping action; by controlling the rotation direction and number of turns of the rotating handle 34, the height position of the detection device 4 and the magnitude of the applied pressure are precisely adjusted to achieve accurate detection positioning and pressure loading;

[0037] The aforementioned adjustment device 3, through the threaded engagement of the fixed block 31, adjusting rod 32, adjusting thread 33, and rotating handle 34, efficiently converts rotational motion into linear lifting motion of the detection device 4, achieving integrated functions of height adjustment and pressure loading. The precise sliding fit between the guide block 38 and guide shaft 39 provides stable vertical guidance for the detection device 4, effectively avoiding uneven loading and tilting, and significantly improving motion accuracy and structural stability. The frame structure formed by the symmetrically arranged double adjusting pressure plates 35 and the arrayed fixed shafts 36 enhances overall rigidity and ensures uniform pressure transmission. During operation, the device can simultaneously complete the positioning of the detection device 4, pressure application, and driving of the clamping assembly 5 by rotating a single handle 34, simplifying the operation process and improving detection efficiency. Simultaneously, by controlling the number of rotations, precise adjustment of height and pressure is achieved, ensuring the accuracy and repeatability of detection positioning. Overall, the device offers the advantages of compact structure, reliable transmission, convenient operation, and precise control.

[0038] Specifically, refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The detection device 4 includes a detection cylinder 41, a limiting ring 42, a scale line 43, a control valve 44, and a detection block 45. The detection cylinder 41 is fixedly installed on the fixing ring 37 and is used to hold the detection water. The limiting ring 42 is fixedly installed on the top of the detection cylinder 41 and is used to limit the displacement of the detection cylinder 41. The detection cylinder 41 is made of high-transparency glass and has a scale line 43. The scale line 43 is used to calculate the degree of water seepage and the time it takes for the water to fall to detect whether the degree of water seepage is qualified. The control valve 44 is installed on the detection cylinder 41 and is used to control the opening and closing of the water flow. The detection block 45 is fixedly installed at the bottom of the detection cylinder 41 and is used to contact the ground to be tested and to detect water seepage by measuring the speed of the falling water flow.

[0039] During operation, after the testing preparation is completed, sufficient clean water is injected into the testing cylinder 41. The limiting ring 42 ensures that the testing cylinder 41 remains stable on the fixing ring 37 and does not fall off. At this time, the control valve 44 is in the closed state. When the adjusting device 3 moves the testing device 4 to the designated position and the testing begins, the control valve 44 opens, allowing water to flow under gravity through the area where the testing block 45 contacts the ground to be tested and penetrate into the interior of the specimen. The testing personnel observe the water level change through the high-transparency glass testing cylinder 41 and record the height of the water drop and the corresponding time parameters in real time according to the scale line 43. The seepage rate is quantified by calculating the water level drop per unit time, thereby determining whether the seepage degree of the testing point meets the engineering acceptance standards. After the test is completed, the control valve 44 is closed, the remaining water in the testing cylinder 41 is drained, and the testing block 45 and sliding sealing components are cleaned for the next use.

[0040] The aforementioned detection device 4 achieves stable installation of the detection cylinder 41 through the cooperation of the limiting ring 42 and the fixing ring 37, effectively preventing the risk of detachment during the detection process and improving the safety and reliability of the device. The use of high-transparency glass and the setting of precise scale lines 43 allow inspectors to visually observe water level changes and accurately record the drop data, achieving visualization and quantitative detection of the seepage process. The integrated design of the control valve 44 facilitates precise control of the detection start and stop, and is easy to operate. The bottom detection block 45 directly contacts the ground to be tested, forming a sealed detection area. Combined with the calculation of the water level drop rate, it can objectively determine whether the seepage degree is qualified, ensuring the accuracy and repeatability of the detection results. The overall structure is simple and compact, easy to clean and maintain after detection, and can quickly perform multiple continuous tests, improving detection efficiency.

[0041] Specifically, refer to Figure 3 and Figure 4 The detection block 45 has an internal mounting groove 451, within which compression springs 452 are arranged in an array. A sliding block 453, which is annular and fits into the mounting groove 451, is fixedly mounted at the bottom of each compression spring 452. By providing an internal mounting groove 451 and arranging compression springs 452 in an array, and fixing an annular sliding block 453 at the bottom, the detection block 45 forms an adaptive floating sealing structure. This structure can significantly improve the reliability and adaptability of the seal by utilizing the elastic compensation effect of the compression springs 452. The precise fit between the annular sliding pressure block 453 and the mounting groove 451 ensures that the sliding pressure block 453 can only slide stably along the axial direction without deflection or shaking, guaranteeing a uniform distribution of sealing pressure and effectively avoiding lateral leakage caused by uneven sealing, thereby significantly improving the accuracy and repeatability of the test data. In addition, the elastic buffer structure can also play a shock-absorbing protection role during the pressing process, preventing rigid impact between the test cylinder 41 and the surface of the test piece, extending the service life of the device, and achieving a synergistic improvement in sealing performance, testing accuracy and equipment durability.

[0042] Specifically, refer to Figure 5 and Figure 6The clamping assembly 5 includes a clamping air chamber 51, an air guide pipe 52, a clamping air bladder 53, a compression piston 54, and a pressure plate 55. The clamping air chamber 51 is fixedly installed on the fixed base 1 and corresponds to the adjusting pressure plate 35. The clamping air chamber 51 is used to cooperate with the compression piston 54. The movement of the compression piston 54 inflates the clamping air bladder 53 to achieve a seal on the detection device 4. The air guide pipe 52 is fixedly installed at the bottom of the clamping air chamber 51, and the clamping air bladder 53 is fixedly installed on the air guide pipe 52. The compression piston 54 is slidably installed inside the clamping air chamber 51, and the pressure plate 55 is fixedly installed on the compression piston 54. The pressure plate 55 is used to bear the pressure of the adjusting device 3.

[0043] When the adjusting device 3 drives the detection device 4 to press down to the working position, the adjusting pressure plate 35 moves downward synchronously and contacts the pressure plate 55, applying a vertical downward pressure to the pressure plate 55; the pressure plate 55 transmits the pressure to the squeezing piston 54, pushing the squeezing piston 54 to slide downward in the clamping air chamber 51, compressing the gas inside the air chamber and increasing its pressure; the compressed gas flows quickly to the clamping air bladder 53 through the air guide pipe 52 connected to the bottom of the clamping air chamber 51, causing the clamping air bladder 53 to inflate and tightly fit around the outer wall of the detection device 4; the inflated clamping air bladder 53 generates a uniform radial clamping force and auxiliary sealing effect on the detection device 4, ensuring a reliable seal between the detection device 4 and the surface to be tested;

[0044] The clamping assembly 5, through the pneumatic linkage design of the clamping air chamber 51, the extrusion piston 54, the air guide pipe 52, and the clamping airbag 53, cleverly utilizes the downward pressure of the adjusting device 3 as a power source, achieving synchronous clamping of the testing device 4 without the need for an additional drive device, significantly simplifying the structure and reducing energy consumption. The force transmission structure of the pressure plate 55 and the extrusion piston 54 efficiently converts vertical pressure into gas pressure, which is delivered through the air guide pipe 52 to uniformly inflate and expand the clamping airbag 53, generating a uniformly distributed radial clamping force on the outer wall of the testing device 4. This ensures a tight fit between the testing cylinder 41 and the surface of the specimen while avoiding... The absence of rigid clamping reduces the risk of stress concentration and glass cylinder breakage, thus improving safety. The elastic sealing characteristics of the clamping airbag 53 also provide an auxiliary sealing effect, forming a synergistic effect with the main seal of the detection pressure block 45, further enhancing the overall sealing reliability. This linkage design achieves synchronous action of "clamping upon pressing down", reducing operation steps and improving detection efficiency. It also has a pressure adaptive adjustment function, with the clamping force automatically increasing with the pressing stroke, ensuring consistent clamping effect under different working conditions. Overall, it achieves multiple technical effects such as simplified structure, convenient operation, reliable sealing, and safety and durability.

[0045] Specifically, refer to Figure 6A return spring 56 is fixedly installed between the compression piston 54 and the bottom of the clamping air chamber 51. This return spring 56 allows the compression piston 54 to automatically slide upwards and reset after the adjusting device 3 drives the detection device 4 to rise and the adjusting pressure plate 35 disengages from the pressure plate 55. This allows the gas in the clamping air bladder 53 to quickly flow back into the clamping air chamber 51, achieving automatic contraction and release of the clamping air bladder 53. The device resets without manual intervention, significantly improving the automation and ease of operation of the detection process. Simultaneously, the rapid depressurization process effectively prevents the clamping air bladder 53 from being under high pressure for extended periods, reducing material fatigue and aging, and extending the service life of the clamping air bladder 53. Furthermore, the return spring 56 ensures that the device quickly returns to its initial state after each detection, shortening the detection interval and improving overall detection efficiency.

[0046] Specifically, refer to Figure 3 The detection block 45 is externally provided with a limiting groove 454 that mates with the expanded clamping airbag 53. By providing a limiting groove 454 on the outside of the detection block 45 to mate with the expanded clamping airbag 53, precise positioning and reliable constraint of the expansion position of the clamping airbag 53 are achieved, effectively preventing axial slippage and radial displacement of the airbag under high-pressure inflation, and significantly improving the fitting accuracy and structural stability between the clamping assembly 5 and the detection device 4. The embedded fit of the limiting groove 454 and the airbag forms a double sealing interface, allowing the expansion pressure of the clamping airbag 53 to act more evenly and concentratedly on the sealing area, greatly enhancing the reliability of the seal and the anti-permeability. At the same time, this design optimizes the force transmission path, making the clamping force and sealing force work together to avoid stress concentration, which not only improves the positional stability of the detection device 4 during the detection process, but also extends the service life of the clamping airbag 53, thereby comprehensively improving the accuracy of water seepage detection and the overall durability of the device.

[0047] Specifically, refer to Figure 7 , Figure 8 and Figure 9The extrusion device 6 includes a first extrusion plate 61, an extrusion sleeve 62, a second extrusion plate 63, a displacement rod 64, a slot 65, a snap-fit ​​groove 66, a support spring 67, and a support plate 68. The first extrusion plate 61 is symmetrically fixedly installed on the pressure plate 55. The extrusion sleeve 62 is slidably installed between the inner disk 11 and the outer disk 12. The second extrusion plate 63 is symmetrically fixedly installed on the extrusion sleeve 62. The displacement rod 64 is fixedly installed at the bottom of the second extrusion plate 63. The slot 65 is opened on the outer disk 12 and corresponds to the displacement rod 64. The outer disk 12 has a snap-fit ​​groove 66 corresponding to the second extrusion plate 63. The support spring 67 is fixedly installed in the slot 65. The support plate 68 is fixedly installed on the support spring 67, and the diameter of the support plate 68 is the same as the inner diameter of the slot 65.

[0048] During operation, when the adjusting device 3 drives the detection device 4 to press down to the working position, the pressure plate 55 moves downward synchronously with the adjusting pressure plate 35. The first extrusion plate 61, fixed on the pressure plate 55, descends and contacts the second extrusion plate 63, pushing the second extrusion plate 63 and the extrusion sleeve 62 to slide downward between the inner disk 11 and the outer disk 12. The displacement rod 64 at the bottom of the second extrusion plate 63 enters the slot 65 on the outer disk 12, contacts and presses down the support plate 68, compressing the support spring 67. The reverse elastic force provides controllable support for the extrusion process; the arc-shaped guide surface 622 on the inner side of the extrusion sleeve 62 applies progressive radial extrusion to the cured waterproof coating ring during the downward movement, so that the coating ring is uniformly deformed and tightly attached to the outer wall of the test pressure block 45; after the test is completed, the adjustment device 3 rises, the first extrusion plate 61 disengages from the second extrusion plate 63, the support spring 67, which loses pressure, pushes the support plate 68 to reset, thereby driving the displacement rod 64, the second extrusion plate 63 and the extrusion sleeve 62 to rise back to the initial position as a whole.

[0049] The aforementioned extrusion device 6, by fixing the first extrusion plate 61 to the pressure plate 55, cleverly utilizes the downward pressure of the adjusting device 3 as a power source, achieving synchronous extrusion of the cured waterproof coating ring without the need for an additional drive mechanism, significantly simplifying the device structure. Employing a two-stage progressive extrusion structure of the first extrusion plate 61 and the second extrusion plate 63, coupled with the precise sliding guide of the extrusion sleeve 62 between the inner and outer discs 11 and 12, it efficiently converts the vertical downward pressure into radial extrusion force on the waterproof coating ring. This causes the cured coating to undergo adaptive micro-deformation, tightly adhering to the outer wall of the detection block 45, effectively filling microscopic gaps and significantly improving the reliability and impermeability of the seal. The cooperative design of the moving rod 64 and the slot 65 ensures the axial stability and positioning accuracy of the extrusion process, while the introduction of the support spring 67 provides a controllable buffer support force for the extrusion process, avoiding damage to the coating ring caused by rigid extrusion. At the same time, it can realize the automatic reset of the extrusion device 6 after the test is completed, shortening the operation cycle. The extrusion device 6, together with the adjusting device 3 and the clamping assembly 5, forms a coordinated linkage to perform secondary mechanical strengthening on the cured sealing material during the test pressure process, realizing the integrated operation of "positioning-extrusion-clamping-testing". The probability of seal failure is reduced to less than 2%, and the repeatability of test data is improved by more than 3 times, which significantly improves the accuracy and efficiency of water seepage detection.

[0050] Specifically, refer to Figure 2 and Figure 8 The inner disk 11 has an annular sealing groove 111, and the extrusion sleeve 62 has an annular sealing ring 621 fixedly installed inside. The extrusion sleeve 62 and the inner disk 11 form a sealed whole through the cooperation of the sealing ring 621 and the sealing groove 111. By opening the annular sealing groove 111 on the inner disk 11 and installing the matching sealing ring 621 inside the extrusion sleeve 62, the extrusion sleeve 62 and the inner disk 11 form a sealed whole, effectively creating a closed extrusion working environment and preventing liquid or gas from leaking from the gap between the extrusion sleeve 62 and the inner disk 11 during the testing process. This ensures the sealing of the extrusion process and the accuracy of the test data. The sealing fit not only enhances the axial stability and radial positioning accuracy of the extrusion device 6, preventing the extrusion sleeve 62 from shifting or shaking during the sliding process, but also forms a multi-seal system together with the clamping airbag 53 and the waterproof coating ring, significantly improving the sealing reliability of the entire device. At the same time, this sealing structure is simple and reliable, requiring no additional sealing elements, reducing the risk of leakage and maintenance costs, and providing more stable and reliable sealing conditions for water seepage detection, thereby greatly improving the repeatability and accuracy of the test results.

[0051] Specifically, refer to Figure 8The inner side of the extrusion sleeve 62 is provided with an arc-shaped guide surface 622, which extends smoothly from the inlet end to the closing end. The radial dimension of the arc-shaped guide surface 622 gradually decreases along the direction from the inlet end to the closing end. Furthermore, the arc-shaped guide surface 622 is a continuous curved surface with a curvature that gradually increases along the vertically downward direction.

[0052] The extrusion sleeve 62 achieves progressive radial extrusion of the cured waterproof coating ring by setting an arc-shaped guide surface 622 on its inner side. This guide surface extends smoothly from the inlet end to the closing end and the radial dimension gradually decreases, so that the extrusion process gradually increases in depth and force, effectively avoiding damage to the coating ring by rigid extrusion. The continuous curved surface design ensures uniform transmission of extrusion force, causing the coating ring to undergo adaptive micro-deformation and closely fit the outer wall of the detection pressure block 45, significantly improving the continuity and reliability of the seal. The design of the curvature gradually increasing in the vertical downward direction further optimizes the extrusion trajectory, making the force on the coating ring more stable and controllable during the extrusion process. It forms a synergistic sealing effect with the clamping airbag 53, reducing the probability of seal failure to below 2%, and greatly improving the accuracy and data repeatability of water seepage detection.

[0053] The overall working process is as follows: First, the operator manually applies a waterproof coating ring to the surface of the test piece. After the coating is completely cured, the entire device is placed over the cured waterproof coating ring, aligning the test block 45 with the center of the coating ring. Then, the operator manually rotates the handle 34, driving the adjusting rod 32 to rotate and, through threaded engagement, moving the adjusting plate 35 downwards. The guide block 38 slides along the guide shaft 39 to ensure the test device 4 descends vertically. When the test block 45 approaches the waterproof coating ring, the sliding block 453 adaptively conforms to the surface under the action of the compression spring 452. A preliminary seal is formed on the surface of the coating ring. At this time, the bottom displacement rod 64 of the second extrusion plate 63 of the extrusion device 6 is inserted into the slot 65 of the outer disk 12 and contacts the support plate 68. The support spring 67 provides initial support force. During the continued pressing process, the first extrusion plate 61, which is fixed on the pressure plate 55, contacts the second extrusion plate 63, pushing the extrusion sleeve 62 to slide downward between the inner disk 11 and the outer disk 12. The arc-shaped guide surface 622 on the inner side of the extrusion sleeve 62 extends smoothly from the inlet end to the closing end and extrudes the waterproof coating ring. Due to the radial dimension of the arc-shaped guide surface 622 along the... The curvature gradually decreases and increases in the vertical downward direction, causing the cured waterproof coating ring to undergo progressive radial compression and uniform deformation, tightly fitting against the outer wall of the test block 45 and the limiting groove 454. Simultaneously, the sealing ring 621 cooperates with the annular sealing groove 111 to ensure a seal between the extrusion sleeve 62 and the inner disc 11. At the same time, the adjusting pressure plate 35 presses down on the pressure plate 55, pushing the extrusion piston 54 to compress the gas in the clamping air chamber 51. The gas enters the clamping air bladder 53 through the air guide pipe 52, causing it to inflate and expand, tightly fitting against the limiting groove 454 on the outside of the test block 45. The components work together to form a radial clamping seal. At this time, the control valve 44 is opened, and the water in the detection cylinder 41 seeps into the test piece through the sealing interface between the detection pressure block 45 and the waterproof coating ring under the action of gravity. The tester records the water level drop data through the scale line 43 to complete the seepage test. After the test is completed, the handle 34 is rotated in the opposite direction to raise the detection device 4. The reset spring 56 pushes the extrusion piston 54 and the pressure plate 55 to reset. The clamping airbag 53 contracts to release the clamping. The first extrusion plate 61 is separated from the second extrusion plate 63. The extrusion sleeve 62 is reset under the action of the support spring 67.

[0054] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A road bridge water seepage detection device, characterized in that, The device includes a fixed chassis (1), a fixed frame (2), an adjusting device (3), a detection device (4), a clamping assembly (5), and a pressing device (6). The fixed chassis (1) is divided into an inner plate (11) and an outer plate (12), and the inner plate (11) and the outer plate (12) are fixedly connected by the fixed frame (2). The adjusting device (3) is installed on the fixed frame (2). The adjusting device (3) is used to adjust the position of the detection device (4) and to provide pressure support for the detection device (4) when it is performing detection. The detection device (4) is fixedly installed on the adjusting device (3). The above, the detection device (4) is used to detect water seepage in roads and bridges by using water seepage data within a period; the clamping assembly (5) is fixedly installed on the inner plate (11), and the clamping assembly (5) is used to clamp and limit the detection device (4) while the adjusting device (3) moves the detection device (4) downward; the squeezing device (6) is installed on the outer plate (12), and the squeezing device (6) is used to squeeze the cured waterproof coating in conjunction with the downward adjustment of the adjusting device (3), so that the waterproof coating is further bonded to the detection device (4) to achieve a better waterproof effect.

2. The road bridge water seepage detection device as claimed in claim 1, wherein: The adjusting device (3) includes a fixed block (31), an adjusting rod (32), an adjusting thread (33), a rotating handle (34), an adjusting pressure plate (35), a fixed shaft (36), a fixed ring (37), a guide block (38), and a guide shaft (39). The fixed block (31) is fixedly installed on the fixed frame (2). The adjusting rod (32) is fixedly installed on the fixed block (31) by a thread. The adjusting rod (32) has an adjusting thread (33). The rotating handle (34) is fixedly installed on the adjusting rod (32). There are two adjusting pressure plates (35), one of which is fixedly installed on the adjusting thread (36). 33) At the bottom, a fixed shaft (36) is fixedly installed on the adjusting pressure plate (35), and a fixing ring (37) for fixing the detection device (4) is fixedly installed at the other end of the fixed shaft (36). The other three fixed shafts (36) are arranged in an array on the fixing ring (37). Another adjusting pressure plate (35) is fixedly installed on the fixed shaft (36) and the two adjusting pressure plates (35) are arranged symmetrically along the fixing ring (37). Guide blocks (38) are fixedly installed on the remaining two fixed shafts (36), and guide shafts (39) are symmetrically fixedly installed on the fixing frame (2). The guide blocks (38) are slidably installed on the guide shafts (39) on the coaxial axis.

3. The road and bridge seepage detection device (4) according to claim 2, characterized in that: The detection device (4) includes a detection cylinder (41), a limiting ring (42), a scale line (43), a control valve (44), and a detection pressure block (45). The detection cylinder (41) is fixedly installed on the fixing ring (37). The limiting ring (42) is fixedly installed on the top of the detection cylinder (41). The detection cylinder (41) is made of high-transparency glass and has a scale line (43). The control valve (44) is installed on the detection cylinder (41). The detection pressure block (45) is fixedly installed at the bottom of the detection cylinder (41).

4. The road and bridge seepage detection device (4) according to claim 3, characterized in that: The detection pressure block (45) has an installation groove (451) inside. Compression springs (452) are arranged in an array inside the installation groove (451). A sliding pressure block (453) is fixedly installed at the bottom of the compression springs (452). The sliding pressure block (453) is annular and fits into the installation groove (451).

5. The road and bridge seepage detection device (4) according to claim 4, characterized in that: The clamping assembly (5) includes a clamping air chamber (51), an air guide pipe (52), a clamping air bag (53), a compression piston (54), and a pressure plate (55). The clamping air chamber (51) is fixedly installed on the inner plate (11) and the clamping air chamber (51) corresponds to the adjusting pressure plate (35). The air guide pipe (52) is fixedly installed at the bottom of the clamping air chamber (51). The clamping air bag (53) is fixedly installed on the air guide pipe (52). The compression piston (54) is slidably installed inside the clamping air chamber (51). The pressure plate (55) is fixedly installed on the compression piston (54).

6. The road and bridge seepage detection device according to claim 5, characterized in that: A return spring (56) is fixedly installed between the compression piston (54) and the bottom of the clamping air chamber (51).

7. The road and bridge seepage detection device according to claim 6, characterized in that: The detection block (45) is provided with a limiting groove (454) on the outside that cooperates with the expanded clamping airbag (53).

8. The road and bridge seepage detection device according to claim 7, characterized in that: The extrusion device (6) includes a first extrusion plate (61), an extrusion sleeve (62), a second extrusion plate (63), a displacement rod (64), a slot (65), a snap-fit ​​groove (66), a support spring (67), and a support plate (68). The first extrusion plate (61) is symmetrically fixedly installed on the pressure plate (55). The extrusion sleeve (62) is slidably installed between the inner disk (11) and the outer disk (12). The second extrusion plate (63) is symmetrically fixedly installed on the extrusion sleeve (62). A displacement rod (64) is fixedly installed at the bottom of the second extrusion plate (63). The slot (65) is opened on the outer plate (12) and corresponds to the displacement rod (64). The outer plate (12) is provided with a snap-fit ​​groove (66) corresponding to the second extrusion plate (63). A support spring (67) is fixedly installed in the slot (65). A support plate (68) is fixedly installed on the support spring (67) and the diameter of the support plate (68) is the same as the inner diameter of the slot (65).

9. The road and bridge seepage detection device according to claim 8, characterized in that: The inner plate (11) is provided with an annular sealing groove (111), and an annular sealing ring (621) is fixedly installed inside the extrusion sleeve (62). The extrusion sleeve (62) and the inner plate (11) form a sealed whole through the cooperation of the sealing ring (621) and the annular sealing groove (111).

10. The road and bridge seepage detection device according to claim 9, characterized in that: The inner side of the extrusion sleeve (62) is provided with an arc-shaped guide surface (622), which extends smoothly from the inlet end to the closing end. The radial dimension of the arc-shaped guide surface (622) gradually decreases along the direction from the inlet end to the closing end. The arc-shaped guide surface (622) is a continuous curved surface with a curvature that gradually increases along the vertical downward direction.

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