Bridge prestressed pipe and tunnel grouting hole pressure grouting quality detection device

Abstract

The present application relates to the field of engineering detection technology, specifically to the bridge prestressed pipe and tunnel grouting hole pressure grouting quality detection device, including pressure grouting detection connecting pipe and electrical shell, pressure grouting detection connecting pipe is provided with support mechanism, electrical shell is electrically connected with detection box through scale splice rod, the inside of detection box is fixedly provided with GPS and inertial navigator, heating sheet and temperature sensor, box is connected with probe by magnetic attraction, probe includes micro probe and wide-angle probe.The scale splice rod can be spliced, the depth of probe insertion is recorded, the GPS and inertial navigator positioning, cloud data transmission are integrated, the detection precision and engineering management efficiency are improved, the end is connected by magnetic attraction, the equipment investment cost is reduced, the detection efficiency is improved, and the data is uniformly managed, the ultrasonic and electromagnetic induction double detection principle are fused, three kinds of defects of hollow, crack and insufficient strength are identified, and the detection needs of two kinds of scenes are covered.

Description

Technical Field

[0001] This invention relates to a grouting quality testing device, and in particular to a grouting quality testing device for bridge prestressed ducts and tunnel grouting ducts, belonging to the field of engineering testing technology. Background Technology

[0002] Current equipment for testing the grouting quality of prestressed ducts in bridges and grouting ducts in tunnels suffers from the problem of "high specialization and poor versatility":

[0003] 1. Inspection of prestressed ducts in bridges: Existing equipment is mostly small ultrasonic testing instruments, which are only suitable for straight / parabolic pre-embedded ducts with an inner diameter of 20-80mm. During inspection, they need to be placed close to the surface of the beam, which cannot adapt to the complex space of tunnels.

[0004] 2. Tunnel grouting duct inspection: Large-scale ground-penetrating radar is often used. Although it can cover annular / grid-shaped ducts with a diameter of 42-110mm, it is bulky and complicated to operate, making it difficult to use in the narrow beam area of ​​bridges.

[0005] 3. The two detection principles are isolated. Bridges focus on "hollow area identification" while tunnels focus on "crack filling verification". Separate equipment needs to be purchased, which increases the project cost. In addition, there is no unified analysis standard for the detection data, which reduces efficiency.

[0006] Therefore, there is an urgent need to design an integrated device that can flexibly adapt to two types of channels and take into account different detection needs, so as to solve the technical pain points of "equipment redundancy and low detection efficiency".

[0007] Therefore, it is urgent to improve the grouting quality testing device to solve the above-mentioned problems. Summary of the Invention

[0008] The purpose of this invention is to provide a grouting quality testing device for prestressed ducts in bridges and grouting ducts in tunnels. It features a graduated splicing rod for easy connection and recording of probe insertion depth. Integrating GPS and inertial navigation positioning, along with cloud data transmission, it improves testing accuracy and engineering management efficiency, while reducing equipment purchase and maintenance costs. Compared to purchasing the two devices separately, the cost is reduced by more than 40%. The end uses a magnetic connection method, enhancing ease of use, reducing equipment investment costs, and improving testing efficiency. Unified data management facilitates quality traceability, promoting the integrated development of bridge and tunnel grouting testing technology. It also provides design ideas for similar cross-scenario testing equipment, integrating ultrasonic and electromagnetic induction dual detection principles to simultaneously identify three types of defects: voids, cracks, and insufficient strength, covering the testing needs of both scenarios.

[0009] To achieve the above objectives, the main technical solutions adopted by the present invention include:

[0010] A grouting quality testing device for bridge prestressed ducts and tunnel grouting ducts includes a grouting testing connecting pipe and an electrical housing fixedly installed inside the grouting testing connecting pipe. A support mechanism is provided on the grouting testing connecting pipe. A testing box is electrically connected to the electrical housing via several graduated splicing rods. A GPS and inertial navigation system, a heating element, and a temperature sensor are fixedly installed inside the testing box. Probes are magnetically connected to the testing box. The probes include a miniature probe and a wide-angle probe. An ultrasonic detector is installed inside the miniature probe, and an electromagnetic and ultrasonic dual-mode detector is installed inside the wide-angle probe.

[0011] The electrical housing contains an electrically connected battery and a dual-signal processing chip. The GPS, the inertial navigator, and the heating element all establish a communication connection with the dual-signal processing chip.

[0012] One end of the graduated splicing rod is provided with a male splicing rod head, and the other end is provided with a female splicing rod head. An electrical connection mechanism is fixedly provided on the graduated splicing rod. The electrical connection mechanism includes a third positive electrode guide rod and a threaded coil wire. The third positive electrode guide rod is fixedly disposed inside the graduated splicing rod. The two ends of the threaded coil wire are electrically connected to a male negative electrode threaded coil or a female negative electrode threaded coil. The male negative electrode threaded coil is disposed on the male splicing rod head and is electrically connected to the electrical housing or the female splicing rod head. The female negative electrode threaded coil is disposed inside the female splicing rod head and is electrically connected to the male splicing rod head or the detection box.

[0013] Preferably, one end of the electrical housing is provided with a housing electrical connector, the male end of the splicing rod is connected to the housing electrical connector by threaded engagement, and the housing electrical connector is provided with a first positive electrode guide rod and a first negative electrode threaded ring inside, and both the first positive electrode guide rod and the first negative electrode threaded ring establish a communication connection with the dual signal processing chip;

[0014] When the graduated splicing rod is connected to the electrical housing, the third positive electrode guide rod abuts against the first positive electrode guide rod, and the male negative electrode threaded ring is electrically connected to the first negative electrode threaded ring.

[0015] Preferably, one end of the detection box is connected to a detection box connector, a second positive electrode guide rod is provided in the middle of the detection box connector, and a detection box negative electrode threaded ring is fixedly provided on the outer side of the detection box connector. The positive electrodes of the GPS and inertial navigator, the heating element and the temperature sensor are electrically connected to the second positive electrode guide rod, and the negative electrodes of the GPS and inertial navigator, the heating element and the temperature sensor are electrically connected to the detection box negative electrode threaded ring.

[0016] Preferably, the end of the detection box away from the graduated splicing rod is provided with a probe connection groove, and a first positive metal ring and a first negative metal ring are fixedly arranged inside the probe connection groove. The first positive metal ring is electrically connected to the second positive conductor rod, and the first negative metal ring is electrically connected to the negative threaded ring of the detection box.

[0017] One end of the probe is fixedly provided with a second positive metal ring and a second negative metal ring. When the probe is engaged with the probe connection slot, the second positive metal ring is electrically connected to the first positive metal ring, and the second negative metal ring is electrically connected to the first negative metal ring.

[0018] Preferably, a first rubidium magnetic sheet is fixedly disposed inside the probe connecting groove, and a second rubidium magnetic sheet is fixedly disposed at one end of the probe. When the probe is snapped into the detection box, the magnetic poles of the first rubidium magnetic sheet and the second rubidium magnetic sheet are opposite.

[0019] Preferably, the support mechanism includes a push nut and a steering support arm, an extension support arm is slidably disposed on the steering support arm, a threaded push ring is fixedly disposed on the outer side of the grouting detection connecting pipe, and the push nut and the threaded push ring are connected by threaded engagement.

[0020] A fixed support ring is fixedly installed on the grouting detection connecting pipe, and a U-shaped rotating groove is fixedly installed on the fixed support ring. One end of the steering support arm is rotatably installed on the U-shaped rotating groove, and the push nut is rotatably connected to the steering support arm through the support connecting arm.

[0021] Preferably, the push nut has a slip ring groove, a slip ring is rotatably disposed inside the slip ring groove, a slip ring connector is fixedly disposed on the slip ring, the slip ring connector is rotatably connected to one end of the support connecting arm, and the other end of the support connecting arm is rotatably connected to the steering support arm.

[0022] Preferably, one end of the extended support arm is connected to an extended arm guide block, the steering support arm is provided with an extended arm guide groove, the extended arm guide block is slidably disposed inside the extended arm guide groove, and the extended support arm is fixed by fastening bolts;

[0023] The end of the extended support arm away from the grouting detection connecting pipe is rotatably connected to a magnetic connecting block, and the magnetic connecting block is connected to a neodymium magnet base via a neodymium magnet adjusting bolt.

[0024] Preferably, the electrical housing is fixedly installed inside the grouting detection connecting pipe by a housing fixing plate, and a flow rate sensor is connected to the end of the electrical housing away from the scaled splicing rod. The flow rate sensor is electrically connected to the dual signal processing chip.

[0025] The dual signal processing chip is electrically connected to a wireless transmission module, which is wirelessly connected to a cloud platform. The dual signal processing chip is connected to a display via wires. A display fixing ring is fixedly installed on the grouting detection connecting pipe, and the display is rotatably mounted on the display fixing ring.

[0026] Preferably, a pressure sensor is fixedly disposed on the outer side of the detection box, the positive electrode of the pressure sensor is electrically connected to the second positive electrode guide rod, and the negative electrode of the pressure sensor is electrically connected to the negative electrode threaded ring of the detection box;

[0027] The grouting detection connecting pipe is connected to a grouting pump connector at one end and a grouting connector at the other end. When the detection box connector is connected to the electrical connector of the shell, the second positive electrode guide rod is electrically connected to the first positive electrode guide rod, and the negative electrode threaded ring of the detection box is electrically connected to the first negative electrode threaded ring.

[0028] This invention has at least the following beneficial effects:

[0029] 1. The electrical housing is made of waterproof and wear-resistant ABS material, suitable for the humid environment of tunnels. Its dimensions are 280×180×100mm, which is convenient for hand-held operation in the narrow space of bridges. The bottom of the support mechanism has a magnetic base that can be fixed to the beam reinforcement to avoid hand shaking and improve the accuracy of detection. The electrical housing is electrically connected to the detection box through several graduated splicing rods. The length of the graduated splicing rods is 1-3m and they can be spliced. The rod body has a scale, which makes it easy to record the probe insertion depth, thus improving the scope of use and the flexibility of use.

[0030] 2. The internal components of the inspection box are fixedly equipped with an integrated GPS and inertial navigation system, a heating element, and a temperature sensor. The integrated GPS and inertial navigation system ensures that the inertial navigation accuracy is ≤5cm, guaranteeing accurate defect location. The temperature sensor can detect the temperature of the inspection box and compensate for the influence of ambient temperature on the inspection data through the heating element, thereby improving accuracy. The integrated GPS and inertial navigation system for positioning and cloud data transmission improves inspection accuracy and engineering management efficiency, while reducing equipment purchase and maintenance costs. Compared with purchasing the two devices separately, the cost is reduced by more than 40%.

[0031] 3. The ultrasonic detector in the miniature probe emits high-frequency sound waves of 1-5MHz. It judges hollowness by the attenuation rate of the reflected wave. When the attenuation rate is >30%, it is a hollow defect. The wide-angle probe is equipped with a dual-mode electromagnetic and ultrasonic detector. It identifies the density of the grout by the change of magnetic field. When the magnetic field strength fluctuation is >5%, it is a crack defect. If the wave velocity is <3000m / s, it is judged as insufficient grout strength. The end is connected by magnetic attraction, which improves the convenience of use, reduces the equipment investment cost, improves the detection efficiency, and unifies data management, which facilitates quality traceability. It promotes the integrated development of bridge and tunnel grouting detection technology and provides design ideas for similar cross-scenario detection equipment. It integrates the dual detection principles of ultrasonic and electromagnetic induction to simultaneously identify three types of defects: hollowness, cracks, and insufficient strength, covering the detection needs of two scenarios. The modular probe design realizes the adaptation of small-diameter pipes in bridges and large-diameter ducts in tunnels, solving the problem of equipment specialization.

[0032] 4. Connect one end of the grouting test connection pipe to the prestressed pipe and the other end to the air pump. Use a flow rate sensor to detect the air flow rate to determine whether the inside of the prestressed pipe is blocked. Clean the pipe's reserved hole in advance to remove debris. Slowly insert the probe into the pipe through the reserved hole at a speed ≤5cm / s to avoid signal interference.

[0033] 5. During grouting, connect the grouting connector to the prestressed duct or the tunnel grouting hole, and connect the grouting pump connector to the grouting pump. In other words, grouting can be carried out directly through the grouting test connection pipe.

[0034] Meanwhile, the pressure sensor can be used to detect the pressure of the slurry on the electrical connector head of the housing directly connected to the detection box, thereby determining whether it is full. This improves the ease of use, makes the machine multi-functional, expands the scope of application, enhances the ease of operation, eliminates the need for frequent equipment replacement, and adapts to complex working environments. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0036] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0037] Figure 2 This is a cross-sectional view of the electrical housing of the present invention;

[0038] Figure 3 This is a cross-sectional view of the detection box of the present invention;

[0039] Figure 4 This is a structural diagram of the graduated splicing rod of the present invention;

[0040] Figure 5 This is a structural diagram of the electrical connection mechanism of the present invention;

[0041] Figure 6 This is a structural diagram of the detection box of the present invention;

[0042] Figure 7 This is a structural diagram of the probe of the present invention;

[0043] Figure 8 This is a schematic diagram of the graduated splicing rod connection of the present invention;

[0044] Figure 9 This is a structural diagram of the support mechanism of the present invention;

[0045] Figure 10 This is a structural diagram of the grouting detection connecting pipe of the present invention;

[0046] Figure 11 This is a diagram of the steering support arm mechanism of the present invention;

[0047] Figure 12 This is a structural diagram of the extended support arm of the present invention.

[0048] In the diagram, 1. Grouting detection connecting pipe; 101. Fixed support ring; 102. U-shaped swivel; 103. Display fixing ring; 104. Threaded push ring; 105. Grouting connector; 106. Grouting pump connector; 2. Support mechanism; 201. Push nut; 2011. Slip ring groove; 202. Support connecting arm; 203. Steering support arm; 2031. Extension arm guide groove; 204. Extension support arm; 2041. Extension arm guide block; 2042. Fastening bolt; 205. Magnet connecting block; 206. Rubidium magnet base; 2061. Rubidium magnet adjusting bolt; 207. Slip ring; 2071. Slip ring connector; 3. Electrical housing; 301. First positive electrode guide rod; 302. First negative electrode threaded ring; 303. Housing electrical connector; 304. Housing fixing plate; 4. Scaled splicing rod; 401. Splicing 5. Male pole connector; 402. Female splicing pole connector; 5. Detection box; 501. Second positive electrode guide rod; 5011. First positive electrode metal ring; 502. Detection box negative electrode threaded ring; 5021. First negative electrode metal ring; 503. GPS and inertial navigation system; 504. Heating element; 505. Probe connection slot; 5051. First rubidium magnet; 506. Detection box connector; 507. Pressure sensor; 508. Temperature sensor; 6. Probe; 601. Second positive electrode metal ring; 602. Second negative electrode metal ring; 603. Second rubidium magnet; 7. Electrical connection mechanism; 701. Third positive electrode guide rod; 702. Threaded ring wire; 7021. Male negative electrode threaded ring; 7022. Female negative electrode threaded ring; 8. Display; 9. Flow rate sensor; 10. Battery; 11. Dual signal processing chip; 12. Wireless transmission module. Detailed Implementation

[0049] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0050] like Figures 1-12 As shown, the grouting quality testing device for bridge prestressed ducts and tunnel grouting ducts provided in this embodiment includes a grouting testing connecting pipe 1 and an electrical housing 3 fixedly installed inside the grouting testing connecting pipe 1. The electrical housing 3 is made of waterproof and wear-resistant ABS material, suitable for the humid environment of tunnels, and has dimensions of 280×180×100mm, facilitating handheld operation in the confined space of bridges. A support mechanism 2 is provided on the grouting testing connecting pipe 1, and the bottom of the support mechanism 2 has a magnetic base that can be fixed to the beam reinforcement to avoid hand shaking and improve the accuracy of testing. The electrical housing 3 is connected by several... The graduated splicing rod 4 is electrically connected to the detection box 5. The length of the graduated splicing rod 4 is 1-3m and can be spliced. The rod body has graduations for easy recording of probe insertion depth. The detection box 5 is internally equipped with an integrated GPS and inertial navigation system 503, a heating element 504, and a temperature sensor 508. The integrated GPS and inertial navigation system 503 ensures inertial navigation accuracy ≤5cm, ensuring accurate defect location. The temperature sensor 508 can detect the temperature of the detection box 5 and compensates for the influence of ambient temperature on the detection data through the heating element 504, improving accuracy. The S-type inertial navigation system 503 provides positioning and cloud data transmission, improving detection accuracy and engineering management efficiency while reducing equipment purchase and maintenance costs. Compared to purchasing two separate devices, the cost is reduced by more than 40%. The detection box 5 is magnetically connected to the probe 6, which includes a miniature probe and a wide-angle probe. The miniature probe contains an ultrasonic detector that emits 1-5MHz high-frequency sound waves. The attenuation rate of the reflected waves is used to determine hollow areas; when the attenuation rate is greater than 30%, a hollow defect is identified. The wide-angle probe contains both electromagnetic and ultrasonic dual-mode detectors. The instrument identifies the density of grout by changes in magnetic field. When the magnetic field strength fluctuation is greater than 5%, it indicates a crack defect. If the wave velocity is less than 3000m / s, it is determined that the grout strength is insufficient. The end is connected by magnetic attraction, which improves the convenience of use, reduces equipment investment costs, and improves detection efficiency. Moreover, the data is managed in a unified manner, which facilitates quality traceability. It promotes the integrated development of bridge and tunnel grouting detection technology and provides design ideas for similar cross-scenario detection equipment. It integrates the dual detection principles of ultrasonic and electromagnetic induction and simultaneously identifies three types of defects: voids, cracks, and insufficient strength, covering the detection needs of two scenarios.

[0051] The modular probe design enables compatibility between small-diameter pipes in bridges and large-diameter ducts in tunnels, solving the problem of equipment specialization.

[0052] The positive terminals of the integrated GPS and inertial navigation device 503, heating element 504, and temperature sensor 508 are electrically connected to the second positive terminal guide rod 501, and the negative terminals of the integrated GPS and inertial navigation device 503, heating element 504, and temperature sensor 508 are electrically connected to the negative terminal threaded ring 502 of the detection box. The electrical housing 3 is internally fixed with an electrically connected battery 10 and a dual signal processing chip 11. The integrated GPS and inertial navigation device 503 and heating element 504 are both connected to the dual signal processing chip 11. The probe 6 and the integrated GPS and inertial navigation device 503 and heating element 504 on the detection box 5 are all electrically connected to the dual signal processing chip 11. The high degree of automation improves timeliness.

[0053] To extend the detection range, several graduated splicing rods 4 are connected in series to achieve the purpose of extending the detection range. One end of each graduated splicing rod 4 is equipped with a male splicing rod head 401, and the other end with a female splicing rod head 402. An electrical connection mechanism 7 is fixedly installed on the graduated splicing rod 4. The electrical connection mechanism 7 includes a third positive electrode guide rod 701 and a threaded wire 702. The third positive electrode guide rod 701 is fixedly installed inside the graduated splicing rod 4. The two ends of the threaded wire 702 are electrically connected to a male negative electrode threaded ring 7021 or a female negative electrode threaded ring 7022. The male negative electrode threaded ring 7021 is installed on the male splicing rod head 401 and electrically connected to the electrical housing 3 or the female splicing rod head 402. The female negative electrode threaded ring 7022 is installed inside the female splicing rod head 402 and electrically connected to the male splicing rod head 401 or the detection box 5. Specifically, during splicing:

[0054] splicing rod connection:

[0055] According to the testing requirements, multiple graduated splicing rods 4 are connected together in sequence. The male end 401 of one graduated splicing rod 4 is rotated into the female end 402 of another graduated splicing rod 4, and the third positive conductor 701 inside the graduated splicing rod 4 is made to abut against each other so that the third positive conductor 701 can carry current. In addition, the male negative thread ring 7021 on the male end 401 is made to abut against the female negative thread ring 7022 inside the female end 402, so that the threaded conductor 702 can carry current.

[0056] Electrical housing 3 is connected to graduated splicing rod 4:

[0057] One end of the electrical housing 3 is provided with a housing electrical connector 303. The splicing rod male head 401 is connected to the housing electrical connector 303 by threaded engagement. One end of the above-mentioned multiple connecting rods, that is, the splicing rod male head 401, is rotated into the interior of the housing electrical connector 303. The interior of the housing electrical connector 303 is provided with a first positive electrode guide rod 301 and a first negative electrode threaded ring 302. Both the first positive electrode guide rod 301 and the first negative electrode threaded ring 302 are established with the dual signal processing chip 11 for communication. When the scaled splicing rod 4 is connected to the electrical housing 3, the third positive electrode guide rod 701 abuts against the first positive electrode guide rod 301, and the male negative electrode threaded ring 7021 is electrically connected to the first negative electrode threaded ring 302, thus completing the electrical connection between the electrical housing 3 and the scaled splicing rod 4.

[0058] Test box connection:

[0059] One end of the test box 5 is connected to a test box connector 506. A second positive electrode guide rod 501 is provided in the middle of the test box connector 506. A test box negative electrode threaded ring 502 is fixedly provided on the outer side of the test box connector 506. The test box connector 506 is rotated into the interior of the splicing rod female head 402, so that the second positive electrode guide rod 501 abuts against the third positive electrode guide rod 701, and the test box negative electrode threaded ring 502 abuts against the female head negative electrode threaded ring 7022, thus completing the installation of the test box 5.

[0060] Probe installation:

[0061] One end of the probe 6 is fixedly provided with a second positive metal ring 601 and a second negative metal ring 602. When the probe 6 is engaged with the probe connecting groove 505, the second positive metal ring 601 is electrically connected to the first positive metal ring 5011, and the second negative metal ring 602 is electrically connected to the first negative metal ring 5021. The end of the detection box 5 away from the graduated splicing rod 4 has a probe connecting groove 505, and the first positive metal ring 5011 and the first negative metal ring 6021 are fixedly provided inside the probe connecting groove 505. 21. The first positive metal ring 5011 is electrically connected to the second positive conductor 501, and the first negative metal ring 5021 is electrically connected to the negative threaded ring 502 of the detection box. When snapping the probe 6 and the detection box 5, one end of the probe 6 is inserted into the probe connecting groove 505, so that the second positive metal ring 601 abuts against the first positive metal ring 5011, and the second negative metal ring 602 abuts against the first negative metal ring 5021, thereby enabling the detection box 5 and the probe 6 to be electrically connected, and completing the installation of the probe 6.

[0062] In addition, to ensure the stability of the connection between the detection box 5 and the probe 6, and to facilitate the replacement of the probe 6, such as Figure 1As shown, a first rubidium magnetic sheet 5051 is fixedly installed inside the probe connection slot 505, and a second rubidium magnetic sheet 603 is fixedly installed at one end of the probe 6. When the probe 6 is snapped into the detection box 5, the magnetic poles of the first rubidium magnetic sheet 5051 and the second rubidium magnetic sheet 603 are opposite. Under the action of magnetic force, the probe 6 can be directly fixed on the detection box 5, which is convenient for installation and replacement, and improves the convenience of use and the efficiency of detection.

[0063] Furthermore, such as Figure 10 and Figure 11 As shown, the support mechanism 2 includes a push nut 201 and a steering support arm 203. An extension support arm 204 is slidably mounted on the steering support arm 203. A threaded push ring 104 is fixedly mounted on the outer side of the grouting detection connecting pipe 1. The push nut 201 and the threaded push ring 104 are connected by a threaded engagement. The push nut 201 pushes on the threaded push ring 104 to stretch the steering support arm 203. A fixed support ring 101 is fixedly mounted on the grouting detection connecting pipe 1. A U-shaped groove 102 is fixedly mounted on the fixed support ring 101. One end of the steering support arm 203 is rotatably mounted on the U-shaped groove 102. The push nut 201 is rotatably connected to the steering support arm 203 through the support connecting arm 202. During the upward push of the threaded push ring 104, the support connecting arm 202 pulls the steering support arm 203 upward. One end of the steering support arm 203 is rotatably mounted on the fixed support ring 101, thereby increasing the opening range of the steering support arm 203 and thus improving its usability.

[0064] Since the push nut 201 and the threaded push ring 104 are connected by a threaded engagement, in order to ensure that the support connecting arm 202 is pulled upward during the rotation of the push nut 201, as follows: Figure 1 As shown, a slip ring groove 2011 is provided on the push nut 201, and a slip ring 207 is rotatably disposed inside the slip ring groove 2011. A slip ring connector 2071 is fixedly disposed on the slip ring 207. The slip ring connector 2071 is rotatably connected to one end of the support connecting arm 202, and the other end of the support connecting arm 202 is rotatably connected to the steering support arm 203. One end of the support connecting arm 202 is connected to the slip ring 207 through the slip ring connector 2071. That is to say, during the rotation of the push nut 201, 207 and the support connecting arm 202 will not rotate, so as to achieve the purpose of opening the steering support arm 203.

[0065] To further increase the contact area of ​​the support mechanism 2, such as Figure 12As shown, one end of the extension support arm 204 is connected to an extension arm guide block 2041, and an extension arm guide groove 2031 is provided on the steering support arm 203. The extension arm guide block 2041 is slidably disposed inside the extension arm guide groove 2031 and is fixed to the extension support arm 204 by fastening bolts 2042. The extension support arm 204 is connected to the steering support arm 203. By extending the steering support arm 203, the contact area of ​​the support mechanism 2 is expanded, the stability of the grouting detection connecting pipe 1 is improved, and the position of the probe 6 can also be adjusted by adjusting the extension support arm 204.

[0066] To improve the stability of the grouting detection connecting pipe 1, a magnetic connecting block 205 is rotatably connected to the end of the extended support arm 204 away from the grouting detection connecting pipe 1. The magnetic connecting block 205 is connected to a neodymium magnet base 206 through a neodymium magnet adjusting bolt 2061, and the neodymium magnet base 206 is directly fixed to the beam reinforcement to avoid hand shaking and improve the stability and detection accuracy of the probe 6.

[0067] Furthermore, such as Figure 2 and Figure 3 As shown, the electrical housing 3 is fixedly installed inside the grouting detection connecting pipe 1 by the housing fixing plate 304. The end of the electrical housing 3 away from the scaled splicing rod 4 is connected to a flow rate sensor 9. The flow rate sensor 9 is electrically connected to the dual signal processing chip 11. One end of the grouting detection connecting pipe 1 is connected to the prestressed pipe, and the other end is connected to the air pump. The flow rate sensor 9 detects the air flow rate to determine whether the inside of the prestressed pipe is blocked. The pipe pre-reserved hole is cleaned in advance to remove debris. The probe is slowly inserted into the pipe through the pre-reserved hole at an insertion speed ≤5cm / s to avoid signal interference.

[0068] The dual signal processing chip 11 is powered on and connected to a wireless transmission module 12. The wireless transmission module 12 connects wirelessly to a cloud platform. The wireless transmission module 12 supports Bluetooth 5.0 and 4G / 5G dual-mode, and can upload detection data to the cloud platform in real time. It supports data sharing among multiple devices, facilitating unified management of bridge-tunnel projects and improving timeliness. Figure 1 As shown, the dual signal processing chip 11 is connected to the display 8 via wires. The display fixing ring 103 is fixedly installed on the grouting detection connecting pipe 1. The display 8 is rotatably mounted on the display fixing ring 103. The display 8 displays the detection curve and defect location coordinates in real time and supports parameter adjustment.

[0069] Furthermore, such as Figure 2 and Figure 10As shown, one end of the grouting detection connecting pipe 1 is connected to the grouting pump connector 106, and the other end is connected to the grouting connector 105. When the detection box connector 506 is connected to the shell electrical connector 303, the second positive electrode guide rod 501 is electrically connected to the first positive electrode guide rod 301, and the detection box negative electrode threaded ring 502 is electrically connected to the first negative electrode threaded ring 302. During grouting, the grouting connector 105 is connected to the prestressed pipe or the tunnel grouting hole, and the grouting pump connector 106 is connected to the grouting pump. In other words, grouting can be performed directly through the grouting detection connecting pipe 1.

[0070] At the same time, such as Figure 10 As shown, the detection box 5 can be directly connected to the electrical connector 303 of the housing. A pressure sensor 507 is fixedly installed on the outer side of the detection box 5. The positive terminal of the pressure sensor 507 is electrically connected to the second positive terminal guide rod 501, and the negative terminal of the pressure sensor 507 is electrically connected to the negative terminal threaded ring 502 of the detection box. The pressure sensor 507 detects the pressure of the slurry to determine whether it is full, which improves the convenience of use, makes the machine multi-functional, expands the scope of use, improves the ease of operation, eliminates the need for frequent equipment replacement, and adapts to complex working environments.

[0071] like Figures 1-12 As shown in this embodiment, the principle of the grouting quality testing device for bridge prestressed ducts and tunnel grouting ducts is as follows:

[0072] The electrical housing 3 is made of waterproof and wear-resistant ABS material, suitable for the humid environment of tunnels. Its dimensions are 280×180×100mm, facilitating handheld operation in the confined space of bridges. A support mechanism 2 is installed on the grouting detection connecting pipe 1. The bottom of the support mechanism 2 has a magnetic base that can be fixed to the beam reinforcement, preventing hand-held shaking and improving detection accuracy. The electrical housing 3 is electrically connected to the detection box 5 via several graduated splicing rods 4. The graduated splicing rods 4 are 1-3m in length and can be spliced. The rods have graduations for easy recording of probe insertion depth. The detection box 5 internally houses an integrated GPS and inertial navigation system 503, a heating element 504, and a temperature sensor 508. The integrated GPS and inertial navigation system 503 ensures inertial navigation accuracy ≤5cm, guaranteeing accurate defect location. The temperature sensor 508 detects the temperature of the detection box 5 and, through the heating element 504, compensates for the influence of ambient temperature on the detection data, improving accuracy. The integrated GPS and inertial navigation system 503 provides positioning and cloud data transmission, enhancing detection accuracy and engineering management efficiency. Compared to purchasing two types of equipment separately, the cost of equipment purchase and maintenance is reduced by more than 40%. The detection box 5 is connected to the probe 6 via magnetic attraction. The probe 6 includes a miniature probe and a wide-angle probe. The miniature probe is equipped with an ultrasonic detector that emits high-frequency sound waves of 1-5MHz. The attenuation rate of the reflected wave is used to determine the hollowness. When the attenuation rate is greater than 30%, it is a hollow defect. The wide-angle probe is equipped with a dual-mode electromagnetic and ultrasonic detector. The density of the grout is identified by the change of magnetic field. When the magnetic field strength fluctuation is greater than 5%, it is a crack defect. If the wave velocity is less than 3000m / s, it is determined that the grout strength is insufficient. The end is connected by magnetic attraction, which improves the convenience of use, reduces equipment investment costs, improves detection efficiency, and unifies data management, which facilitates quality traceability. It promotes the integrated development of bridge and tunnel grouting detection technology and provides design ideas for similar cross-scenario detection equipment. It integrates the dual detection principles of ultrasonic and electromagnetic induction to simultaneously identify three types of defects: hollowness, cracks, and insufficient strength, covering the detection needs of two scenarios.

[0073] The modular probe design enables compatibility between small-diameter pipes in bridges and large-diameter ducts in tunnels, solving the problem of equipment specialization.

[0074] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0075] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0076] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. Bridge prestressed pipe and tunnel grouting hole pressure grouting quality detection device, including pressure grouting detection connecting pipe (1) and the electrical shell (3) fixedly arranged in the pressure grouting detection connecting pipe (1), characterized in that, The support mechanism (2) is arranged on the pressure grouting detection connecting pipe (1), the electrical shell (3) is electrically connected with the detection box (5) through a plurality of scale splicing rods (4), the GPS and inertial navigator (503), the heating sheet (504) and the temperature sensor (508) are fixedly arranged in the detection box (5), the detection box (5) is connected with the probe (6) in a magnetic attraction mode, the probe (6) comprises a micro probe and a wide-angle probe, an ultrasonic detector is arranged in the micro probe, and an electromagnetic and ultrasonic dual-mode detector is arranged in the wide-angle probe; The electrical shell (3) is fixedly provided with the electrically connected battery (10) and double signal processing chip (11) in the inside, the GPS and inertial navigator (503) and the heating sheet (504) are both in communication connection with the double signal processing chip (11); One end of the scale splicing rod (4) is provided with a splicing rod male head (401), the other end is provided with a splicing rod female head (402), the scale splicing rod (4) is fixedly provided with an electrically connected mechanism (7), the electrically connected mechanism (7) comprises a third positive pole guide rod (701) and a threaded ring wire (702), the third positive pole guide rod (701) is fixedly arranged in the inside of the scale splicing rod (4), the threaded ring wire (702) is electrically connected with a male negative pole threaded ring (7021) or a female negative pole threaded ring (7022) at both ends, the male negative pole threaded ring (7021) is arranged on the splicing rod male head (401) and is electrically connected with the electrical shell (3) or the splicing rod female head (402), the female negative pole threaded ring (7022) is arranged in the inside of the splicing rod female head (402) and is electrically connected with the splicing rod male head (401) or the detection box (5).

2. The bridge prestressed duct and tunnel grouting hole for the pressure grouting quality detection device of claim 1, characterized in that: One end of the electrical shell (3) is provided with a shell electrically connected head (303), the splicing rod male head (401) is connected with the shell electrically connected head (303) through thread rotation, the inside of the shell electrically connected head (303) is provided with a first positive pole guide rod (301) and a first negative pole threaded ring (302), the first positive pole guide rod (301) and the first negative pole threaded ring (302) are both in communication connection with the double signal processing chip (11); When the scale splicing rod (4) is connected with the electrical shell (3), the third positive pole guide rod (701) abuts against the first positive pole guide rod (301), and the male negative pole threaded ring (7021) is electrically connected with the first negative pole threaded ring (302).

3. The bridge prestressed duct and tunnel grouting hole for the pressure grouting quality detection device of claim 2, characterized in that: One end of the detection box (5) is connected with a detection box connector (506), the middle part of the detection box connector (506) is provided with a second positive electrode guide rod (501), the outer side of the detection box connector (506) is fixedly provided with a detection box negative threaded ring (502), the positive electrode of the GPS and inertial navigator (503), the heating sheet (504) and the temperature sensor (508) is electrically connected with the second positive electrode guide rod (501), and the negative electrode of the GPS and inertial navigator (503), the heating sheet (504) and the temperature sensor (508) is electrically connected with the detection box negative threaded ring (502).

4. The bridge prestressed duct and tunnel grouting hole for the pressure grouting quality detection device of claim 3, characterized in that: The detection box (5) is provided with a probe connecting groove (505) away from one end of the scale splicing rod (4), the inside of the probe connecting groove (505) is fixedly provided with a first positive electrode metal ring (5011) and a first negative electrode metal ring (5021), the first positive electrode metal ring (5011) is electrically connected with the second positive electrode guide rod (501), and the first negative electrode metal ring (5021) is electrically connected with the detection box negative threaded ring (502). One end of the probe (6) is fixedly provided with a second positive electrode metal ring (601) and a second negative electrode metal ring (602), wherein when the probe (6) is clamped with the probe connecting groove (505), the second positive electrode metal ring (601) is electrically connected with the first positive electrode metal ring (5011), and the second negative electrode metal ring (602) is electrically connected with the first negative electrode metal ring (5021).

5. The bridge prestressed duct and tunnel grouting hole used pressure grouting quality detection device according to claim 4, characterized in that: The inside of the probe connecting groove (505) is fixedly provided with a first rubidium magnetic sheet (5051), one end of the probe (6) is fixedly provided with a second rubidium magnetic sheet (603), and when the probe (6) is clamped with the detection box (5), the magnetic poles of the first rubidium magnetic sheet (5051) and the second rubidium magnetic sheet (603) are opposite.

6. The bridge prestressed duct and tunnel grouting hole used pressure grouting quality detection device according to claim 1, characterized in that: The support mechanism (2) comprises a propelling nut (201) and a steering support arm (203), an extension support arm (204) is slidably arranged on the steering support arm (203), a threaded propelling ring (104) is fixedly arranged on the outer side of the pressure grouting detection connecting pipe (1), and the propelling nut (201) is connected with the threaded propelling ring (104) through thread engagement; A fixed support ring (101) is fixedly arranged on the pressure grouting detection connecting pipe (1), a U-shaped turning groove (102) is fixedly arranged on the fixed support ring (101), one end of the steering support arm (203) is rotatably arranged on the U-shaped turning groove (102), and the propelling nut (201) is rotatably connected with the steering support arm (203) through a support connecting arm (202).

7. The bridge prestressed duct and tunnel grouting hole used pressure grouting quality detection device according to claim 6, characterized in that: The sliding ring groove (2011) is internally rotatably provided with a sliding ring (207), the sliding ring (207) is fixedly provided with a sliding ring connecting head (2071), the sliding ring connecting head (2071) is rotatably connected with one end of the support connecting arm (202), and the other end of the support connecting arm (202) is rotatably connected with the steering support arm (203).

8. The bridge prestressed duct and tunnel grouting hole used pressure grouting quality detection device according to claim 7, characterized in that: One end of the extension support arm (204) is connected with an extension arm guide block (2041), the steering support arm (203) is provided with an extension arm guide groove (2031), the extension arm guide block (2041) is slidably arranged in the extension arm guide groove (2031), and the extension support arm (204) is fixed by a fastening bolt (2042); The magnet connecting block (205) is rotatably connected with a rubidium magnet base (206) through a rubidium magnet adjusting bolt (2061).

9. The bridge prestressed duct and tunnel grouting hole used pressure grouting quality detection device according to claim 1, characterized in that: The electrical shell (3) is fixedly arranged in the interior of the grouting detection connecting pipe (1) through a shell fixing plate (304), the electrical shell (3) is connected with a flow rate sensor (9) away from one end of the scale spliced rod (4), and the flow rate sensor (9) is electrically connected with the double-signal processing chip (11). The double-signal processing chip (11) is electrically connected with a wireless transmission module (12), the wireless transmission module (12) is connected with a cloud platform in a wireless mode, the double-signal processing chip (11) is connected with a display (8) through a wire, the grouting detection connecting pipe (1) is fixedly provided with a display fixing ring (103), and the display (8) is rotatably arranged on the display fixing ring (103).

10. The bridge prestressed duct and tunnel grouting hole used pressure grouting quality detection device according to claim 5, characterized in that: The outer side of the detection box (5) is fixedly provided with a pressure sensor (507), the positive electrode of the pressure sensor (507) is electrically connected with the second positive electrode guide rod (501), and the negative electrode of the pressure sensor (507) is electrically connected with the detection box negative electrode threaded ring (502). One end of the grouting detection connecting pipe (1) is connected with a grouting pump connecting head (106), the other end is connected with a grouting connecting head (105), when the detection box connecting head (506) is connected with the shell electrical connecting head (303), the second positive electrode guide rod (501) is electrically connected with the first positive electrode guide rod (301), and the detection box negative electrode threaded ring (502) is electrically connected with the first negative electrode threaded ring (302).

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