A device and method for detecting water seepage at joints of shield segments

Abstract

The present invention relates to the field of subways, and specifically to a device and method for detecting water seepage at the joints of shield tunnel segments. The device comprises a base plate, a power module for driving the base plate to move is provided at the bottom end of the base plate, a control box is fixedly provided at the bottom end of the base plate, a detection unit for detecting water seepage at the joints is provided inside the control box, a positioning unit for marking the water seepage points is provided on the base plate, and a control unit for controlling the operation of the equipment is provided on the base plate. The device integrates multiple functions such as detection, positioning, marking and alarming, reduces the complexity of on-site operations and the number of required equipment, improves work efficiency, can ensure accurate detection of leakage at the joints, and can simultaneously issue an alarm to promptly notify relevant personnel to take measures. The device can also spray-mark the leakage points, simplifying the work process of subsequent maintenance personnel, and can ensure that the equipment remains stable during the detection process, avoiding data errors caused by vibration or displacement.

Description

Technical Field

[0001] The invention relates to the field of construction, and in particular to a device and method for detecting water seepage at joints of shield segments. Background Art

[0002] During shield tunnel construction and maintenance, water leakage at segment joints remains a critical factor affecting tunnel safety and durability. Traditional detection methods typically rely on fixed installations such as humidity or moisture sensors. These methods suffer from low monitoring accuracy, slow response, and difficulty in assembly and disassembly for maintenance. Furthermore, existing equipment struggles to be directly inserted into joints and moved along the segments for comprehensive inspection, resulting in complex and inefficient operations.

[0003] Chinese patent application number 202311267030.4 discloses a device and method for detecting water seepage in shield segment joint gaskets. The device comprises a T-shaped test bench, which includes a flat first pressure plate and two L-shaped second pressure plates; the first pressure plate is provided with a first gasket; the second pressure plate is provided with a second gasket; a power supply; a sticker strip provided with multiple conductive parts; the sticker strip is arranged between the second gasket and the first gasket (or the second gasket); an alarm device is connected in series with the conductive parts to form a detection branch; and multiple detection branches are connected in parallel with the power supply. The water storage chamber between the first and second pressure plates is filled with a conductive liquid. By continuously increasing the water pressure of the conductive liquid, the first gasket or the second gasket will rupture. At this time, the conductive liquid leaks and contacts the conductive parts. When the conductive parts are energized, the alarm device issues a prompt. People can find the leakage location of the first gasket or the second gasket based on the prompt of the alarm device. The detection method is simple to operate and the detection is accurate.

[0004] Chinese patent application number 202211354661.5 discloses a water leakage monitoring device and method based on shield tunnel segments. The device includes a lamp, a wire, a water absorption line, and a detection device. The lamp includes a lamp 1 disposed at the circumferential joint and a lamp 2 disposed at the longitudinal joint. The lamps 1 and 2 are connected by a wire and a water absorption line to form a path for the corresponding lamps 1 and 2 to illuminate when a water leakage occurs. The water leakage monitoring device is different from the monitoring devices in the prior art. The water leakage monitoring device can sense the light of the lamp, identify the position number of the lamp and the position number of the segment, and has the ability to quickly and accurately determine the location and range of the water leakage.

[0005] However, there are still the following problems in practical applications, specifically:

[0006] 1. Low integration: Both of the above patents fail to integrate functions such as detection, positioning, marking and alarm, resulting in complicated on-site operations, a large number of required equipment, and reduced work efficiency.

[0007] 2. Insufficient stability: Existing solutions are susceptible to vibration or displacement during the inspection process, resulting in data errors and unable to accurately detect leakage at the joint. In contrast, this solution, through the first and second electric push rods and pneumatic suction cups in the power module, can provide strong suction force, ensuring the stability of the equipment during the inspection process.

[0008] 3. Lack of real-time feedback mechanism: Existing patents mostly rely on fixed sensors for data collection, lacking flexible mobility and real-time feedback mechanisms, making it difficult to detect and address leakage issues promptly. This solution, however, utilizes a detection unit that can move along the segment joints and enables real-time data transmission and analysis through a wireless communication module, significantly improving response speed.

[0009] 4. Inconvenient marking: Existing patents often require additional manual work to mark leak points, increasing the workload of maintenance personnel. This solution uses an automated paint spraying system to immediately spray mark the leak point when a leak is detected, simplifying the subsequent maintenance process.

[0010] Therefore, how to overcome the above-mentioned technical problems and defects becomes a key issue that needs to be solved. Summary of the Invention

[0011] The purpose of the present invention is to overcome the defects described in the background technology, thereby realizing a water seepage detection device and detection method at the joints of shield pipe segments. The detection device and detection method integrate multiple functions such as detection, positioning, marking and alarm, reduce the complexity of on-site operations and the number of required equipment, improve work efficiency, and can ensure accurate detection of leakage at the joints. At the same time, an alarm can be issued to promptly notify relevant personnel to take measures to prevent the situation from escalating. The leakage points can also be spray-marked, which simplifies the work process of subsequent maintenance personnel and can ensure that the equipment remains stable during the detection process to avoid data errors caused by vibration or displacement.

[0012] In order to achieve the above-mentioned purpose of the invention, the technical solution of the present invention is: a water seepage detection device and detection method at the joints of shield pipe segments, including a base plate, a power module for driving the movement of the base plate is provided at the bottom end of the base plate, a control box is fixedly provided at the bottom end of the base plate, a detection unit for detecting water seepage at the joints is provided inside the control box, a positioning unit for marking the water seepage area is provided on the base plate, and a control unit for controlling the operation of the equipment is provided on the base plate.

[0013] In the above-mentioned shield segment joint water seepage detection device, the base plate is a rectangular structure, handles are fixedly provided on both sides of the base plate, and a protective cover is fixedly provided on the outside of the base plate, and the protective cover surrounds the upper part of the device.

[0014] In the above-mentioned shield segment joint water seepage detection device, the power module includes a lifting unit, and the lifting unit includes a first electric push rod vertically fixed at the two bottom ends in the length direction of the base plate. The telescopic end of the first electric push rod is fixed with a cross bar and the first electric push rod is located in the middle position of the top end of the cross bar. The cross bar is horizontally arranged below the base plate and its two ends are facing the width direction of the base plate.

[0015] First guide rods are vertically fixed on the cross bars on both sides of the first electric push rod.

[0016] In the above-mentioned shield segment joint water seepage detection device, the power module includes a moving unit, which includes a second electric push rod with both ends of the cross bar vertically fixed at the bottom, and a first pneumatic suction cup is vertically fixed at the telescopic end of the second electric push rod.

[0017] A guide rod is fixedly provided at the bottom end of the cross bar inside the first pneumatic suction cup, and the guide rod is horizontally arranged along the length direction of the substrate. A slide groove is opened at the bottom end of the guide rod along its length direction, and a slider is slidingly provided inside the slide groove. A first bidirectional motor is fixedly provided at the end of the guide rod, and a lead screw is coaxially fixed at the output end of the first bidirectional motor. The lead screw passes through the slide groove along the length direction of the guide rod, the lead screw passes through the slider and is threadedly connected to the slider, and a second pneumatic suction cup is fixedly provided at the bottom end of the slider.

[0018] In the above-mentioned shield segment joint water seepage detection device, an air pump for driving the first pneumatic suction cup and the second pneumatic suction cup is fixedly installed inside the control box.

[0019] In the above-mentioned shield segment joint water seepage detection device, the detection unit includes lifting rods arranged at both ends inside the control box, and the lifting rods are arranged horizontally with both ends facing the width direction of the base plate.

[0020] Guide plates are vertically fixed on the tops of both ends of the lifting rod, a third electric push rod is vertically fixed on the top of the lifting rod, and the sleeve end of the third electric push rod is fixed to the inner top of the control box.

[0021] A detection rod that can swing up and down is hingedly set at the middle position of the bottom end of the lifting rod, and a second bidirectional motor is fixedly set on the lifting rod on the side of the detection rod. A worm is fixedly set at the output end of the second bidirectional motor, and a worm wheel that meshes with the worm is rotatably set at the bottom end of the lifting rod. A rotating shaft that drives the detection rod to swing is coaxially fixed on the side of the worm wheel, and rotating wheels are rotatably set on both sides of the bottom end of the detection rod.

[0022] In the above-mentioned shield segment joint water seepage detection device, a detection groove is opened on the side of the corresponding detection rod, a rubber tube is fixedly installed inside the detection groove, a detection line is fixedly installed inside the rubber tube, and a detection block electrically connected to the detection line is fixedly installed at the bottom end of the rubber tube.

[0023] A rotatable detection ball is provided at the bottom end of the detection block, and the detection ball is rotatably set on the detection block through an abutment ring fixedly provided on the outer surface of the detection ball. A detector abutting the abutment ring is fixedly provided inside the detection block, and a cleaning hole horizontally passing through the detection block is provided on the side of the detection block, and the cleaning hole is located at the abutment position between the detector and the abutment ring.

[0024] In the above-mentioned shield segment joint water seepage detection device, the positioning unit includes a main paint box fixedly arranged at the top of the base plate, and auxiliary paint boxes are fixedly arranged at the four corners of the top of the base plate. Each of the auxiliary paint boxes is connected to the main paint box through a first connecting tube fixedly arranged at its end.

[0025] Second connecting tubes are vertically fixedly provided at the four corners of the side of the base plate, the bottom ends of the second connecting tubes are connected to nozzles, and the other ends of the second connecting tubes are connected to the corresponding auxiliary paint boxes.

[0026] In the above-mentioned shield segment joint water seepage detection device, the control unit includes a microprocessor fixedly installed inside the control box, a placement portion is fixedly installed at the top of the base plate, a detachable remote control electrically connected to the microprocessor is installed in the placement portion, and an alarm adapted to the detection unit is fixedly installed at the top of the base plate, and the alarm is electrically connected to the microprocessor.

[0027] A water seepage detection method, applied to the above-mentioned shield segment joint water seepage detection device, comprises the following steps:

[0028] a. Check the equipment: make sure all components are in good condition, connect to the microprocessor via the remote control, and adjust the detection parameters according to actual needs, including detection sensitivity and movement speed.

[0029] b. Equipment deployment: Use the handle to carry the equipment to the vicinity of the shield segment that needs to be inspected, and ensure that the protective cover is correctly installed and surrounds the upper part of the equipment to protect the internal components from the external environment.

[0030] c. Start the equipment: Use the second electric push rod to adjust the height of the first pneumatic suction cup so that it is tightly adsorbed on the surface of the shield segment to provide stable support. Control the extension of the third electric push rod to drive the lifting rod down, drive the detection rod to swing up and down, start the first electric push rod to lower the cross bar until the detection ball at the bottom of the rubber tube contacts the sealing gasket at the joint of the shield segment.

[0031] d. Data collection and analysis: The equipment is driven to move by the mobile unit. During this process, the abutment ring is always in contact with the sealing gasket at the joint of the shield segment. The detector fixed inside the detection block on the detection ball starts to work, monitoring the changes in the electrical signal in real time and transmitting it to the microprocessor through the detection line. The microprocessor analyzes and processes the received data to determine whether there is leakage. When an abnormal signal is detected, an alarm is sounded through the alarm.

[0032] e. Mark the leakage point: When a leakage is detected, the microprocessor controls the main paint tank to feed the auxiliary paint tank. The auxiliary paint tank delivers the paint to the print head through the second connecting pipe to spray mark the leakage point, so that subsequent maintenance personnel can quickly locate the problem area. The main paint tank stores the paint, and the auxiliary paint tank ensures that the paint will not be unable to be sprayed when the equipment is moved to the top.

[0033] f. Complete the inspection: After the inspection is completed, retract the inspection rod, turn off all electric components, disconnect the power supply, remove the protective cover, check whether the equipment is intact, and do a good job of cleaning and maintenance.

[0034] Beneficial effects:

[0035] 1. The device and method for detecting water seepage at the joints of shield tunnel segments of the present invention can monitor the changes in electrical signals in real time by means of a detection ball and a detector arranged at the bottom of a detection rod, thereby ensuring accurate detection of leakage at the joints. The detection rod can swing up and down, and the worm gear is driven to rotate by a second bidirectional motor, so that the detection ball can fully contact the entire joint area, thereby improving the comprehensiveness and accuracy of the detection.

[0036] 2. The device and method for detecting water seepage at the joints of shield tunnel segments of the present invention, when leakage is detected, the microprocessor controls the main paint box to feed the auxiliary paint box, and the auxiliary paint box transports the paint to the nozzle through the second connecting pipe to spray mark the leakage point, thereby simplifying the workflow of subsequent maintenance personnel. At the same time, the microprocessor analyzes and processes the received data. Once an abnormal signal is detected, the alarm is immediately triggered to sound an alarm, and relevant personnel are promptly notified to take measures to prevent the situation from escalating.

[0037] 3. The device and method for detecting water seepage at the joints of shield tunnel segments of the present invention have handles fixedly provided on both sides of the base plate to facilitate the transportation and movement of the equipment and adapt to different working environments. The external fixed protective cover surrounds the upper part of the equipment, effectively protecting the internal components from the influence of the external environment and extending the service life of the equipment.

[0038] 4. The device and method for detecting water seepage at the joints of shield tunnel segments of the present invention, the power module includes a lifting unit and a moving unit, the first electric push rod and the second electric push rod are used to adjust the height and adsorption position respectively, the guide rod and the slider cooperate with the lead screw to realize the smooth movement of the equipment, ensuring the stability during the detection process, the first pneumatic suction cup and the second pneumatic suction cup are driven by an air pump to provide a strong adsorption force, ensuring that the equipment remains stable during the detection process and avoiding data errors caused by vibration or displacement.

[0039] 5. The device and method for detecting water seepage at the joints of shield tunnel segments of the present invention are connected to a microprocessor via a remote control, and can adjust detection parameters according to actual needs, including detection sensitivity and movement speed, thereby improving the adaptability and flexibility of the equipment. It also integrates multiple functions such as detection, positioning, marking and alarm, reducing the complexity of on-site operations and the number of required equipment, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0041] Figure 2 It is a schematic diagram of the bottom structure of the present invention;

[0042] Figure 3 It is a schematic diagram of the internal structure of the present invention;

[0043] Figure 4 It is a schematic diagram of the power module structure of the present invention;

[0044] Figure 5 It is a schematic structural diagram of the detection unit of the present invention;

[0045] Figure 6 It is a schematic diagram of the position of the rubber tube of the present invention;

[0046] Figure 7 This invention Figure 6 Enlarged view of area A in the middle;

[0047] Figure 8 It is a structural schematic diagram of the positioning unit of the present invention.

[0048] In the figure: 1, base plate; 2, power module; 21, lifting unit; 211, first electric push rod; 212, cross bar; 213, first guide rod; 22, moving unit; 221, second electric push rod; 222, first pneumatic suction cup; 223, guide rod; 224, slide; 225, slider; 226, first bidirectional motor; 227, lead screw; 228, second pneumatic suction cup; 229, vacuum pump; 3, control box; 4, detection unit; 401, lifting rod; 402, guide plate; 403, third electric push rod; 404, detection rod; 405, second Bidirectional motor; 406, worm; 407, worm wheel; 408, rotating shaft; 409, rotating wheel; 410, detection groove; 411, rubber tube; 412, detection line; 413, detection block; 414, detection ball; 415, abutment ring; 416, detector; 417, cleaning hole; 5, positioning unit; 51, main paint box; 52, auxiliary paint box; 53, first connecting pipe; 54, second connecting pipe; 55, nozzle; 6, control unit; 61, microprocessor; 62, placement part; 63, remote control; 64, alarm; 7, handle; 8, protective cover. DETAILED DESCRIPTION

[0049] The following describes in more detail the device and method for detecting water seepage at the joints of shield segments of the present invention with reference to the accompanying drawings and through specific implementation methods.

[0050] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0051] See also Figures 1-8 , a device for detecting water seepage at the joints of shield segments in this embodiment integrates multiple functions such as detection, positioning, marking and alarm, which reduces the complexity of on-site operations and the number of required equipment, and improves work efficiency. It can ensure accurate detection of leakage at the joints, and at the same time, it can issue an alarm to promptly notify relevant personnel to take measures to prevent the situation from escalating. It can also spray-mark the leakage points, simplifying the work process of subsequent maintenance personnel, and ensuring that the equipment remains stable during the detection process to avoid data errors caused by vibration or displacement. In this embodiment, it mainly includes a base plate 1, which is a rectangular structure. Handles 7 are fixedly provided on both sides of the base plate 1 to facilitate the transportation and movement of the equipment and adapt to different working environments. A protective cover 8 is fixedly provided on the outside of the base plate 1, and the protective cover 8 surrounds the upper part of the equipment. It effectively protects the internal components from the influence of the external environment and extends the service life of the equipment.

[0052] The bottom end of the substrate 1 is provided with a power module 2 for driving the substrate 1 to move, the power module 2 includes a lifting unit 21, the bottom end of the substrate 1 is fixedly provided with a control box 3, the lifting unit 21 includes a first electric push rod 211 fixedly provided at both bottom ends in the length direction of the substrate 1, the telescopic end of the first electric push rod 211 is fixedly provided with a cross bar 212 and the first electric push rod 211 is located at the top middle position of the cross bar 212, the cross bar 212 is horizontally provided below the substrate 1 and its two ends are facing the width direction of the substrate 1. The first guide rod 213 is vertically fixedly provided on the cross bars 212 on both sides of the first electric push rod 211. When the equipment needs to be fixed and moved, the first electric push rod 211 is controlled to work so that the cross bar 212 is lifted and lowered toward the substrate 1. In this process, the guiding work is performed by the first guide rod 213. The power module 2 includes a mobile unit 22, which includes a second electric push rod 221 vertically fixed at the bottom ends of both ends of the cross bar 212. The telescopic end of the second electric push rod 221 is vertically fixed with a first pneumatic suction cup 222. A guide rod 223 is fixed at the bottom end of the cross bar 212 inside the first pneumatic suction cup 222. The guide rod 223 is horizontally arranged along the length direction of the substrate 1. The bottom end of the guide rod 223 is provided with a slide groove 224 along its length direction. A slider 225 is slidably arranged inside the slide groove 224. A first bidirectional motor 226 is fixed at the end of the guide rod 223. A lead screw 227 is coaxially fixed at the output end of the first bidirectional motor 226. The lead screw 227 passes through the slide groove 224 along the length direction of the guide rod 223. The lead screw 227 passes through the slider 225 and is threadedly connected to the slider 225. The bottom end of the slider 225 is fixed with a second pneumatic suction cup 228. The first pneumatic suction cup 222 and the second pneumatic suction cup 228 are both mature existing technologies and will not be described in detail herein. An air pump 229 is fixedly installed inside the control box 3 to drive the first pneumatic suction cup 222 and the second pneumatic suction cup 228 to work.

[0053] When the detection position is fixed, the vacuum pump 229 is controlled to operate to extract air from the first pneumatic suction cup 222 and the second pneumatic suction cup 228, thereby fixing the substrate 1 on the pipe sheet. When moving, first release the control of the second pneumatic suction cup 228, then control the second electric push rod 221 to extend, lift the substrate 1, and at this time, the second pneumatic suction cup 228 is separated from the pipe sheet. Then, the first bidirectional motor 226 is controlled to operate, driving the lead screw 227 to rotate, so that the slider 225 drives the second pneumatic suction cup 228 to move in the slide 224, changing the position of the second pneumatic suction cup 228. Control the second electric push rod 221 to contract and lower the substrate 1. At this time, the second pneumatic suction cup 228 is re-contacted with the pipe sheet, and then the vacuum pump 229 is used to re-control the second pneumatic suction cup 228 to operate, so that it is fixed to the pipe sheet. Then, the control of the first pneumatic suction cup 222 is released, and the second electric push rod 221 is controlled to retract, at which point the first pneumatic suction cup 222 is separated from the tube sheet. The first bidirectional motor 226 is then reversed, causing the slide 224 to move along the slider 225, thereby moving the substrate 1. Finally, the second electric push rod 221 is controlled to extend, causing the first pneumatic suction cup 222 to contact the tube sheet and to evacuate it to secure it to the tube sheet. This operation is repeated to achieve the movement of the substrate 1 on the tube sheet.

[0054] To detect water seepage, see Figure 2 and Figure 5-Figure 7 In this embodiment, the control box 3 is internally provided with a detection unit 4 capable of detecting water seepage at the seams. The detection unit 4 includes lifting rods 401 provided at both ends of the control box 3. The lifting rods 401 are arranged horizontally with their ends facing the width direction of the substrate 1. Guide plates 402 are vertically fixed to the tops of both ends of the lifting rods 401, which guide the lifting rods 401 during movement. A third electric push rod 403 is vertically fixed to the top of the lifting rod 401, and the sleeve end of the third electric push rod 403 is fixed to the top of the control box 3. During detection, the third electric push rod 403 is controlled to extend, driving the lifting rod 401 to descend. A detection rod 404 that can swing up and down is hingedly provided at the middle position of the bottom end of the lifting rod 401. A second bidirectional motor 405 is fixedly provided on the lifting rod 401 on the side of the detection rod 404. A worm 406 is fixedly provided at the output end of the second bidirectional motor 405. A worm gear 407 that meshes with the worm 406 is rotatably provided at the bottom end of the lifting rod 401. A rotating shaft 408 that drives the detection rod 404 to swing is coaxially fixed to the side of the worm gear 407. Rotating wheels 409 are rotatably provided on both sides of the bottom end of the detection rod 404. The second bidirectional motor 405 is controlled to operate, and the detection rod 404 is driven to swing through the worm 406 and worm gear 407, so that the rotating wheel 409 is inserted into the gap and abuts against the sealing gasket at the joint.

[0055] The corresponding detection rod 404 has a detection groove 410 on its side. A rubber tube 411 is fixedly provided inside the detection groove 410. A detection line 412 is fixedly provided inside the rubber tube 411. A detection block 413 electrically connected to the detection line 412 is fixedly provided at the bottom end of the rubber tube 411. A rotatable detection ball 414 is provided at the bottom end of the detection block 413. The detection ball 414 is rotatably provided on the detection block 413 through an abutment ring 415 fixedly provided on its outer surface. A detector 416 is fixedly provided inside the detection block 413 to abut against the abutment ring 415. The detector 416 is a mature sensor technology and will not be described in detail here. A cleaning hole 417 is provided on the side of the detection block 413, which runs horizontally through the detection block 413. The cleaning hole 417 is located at the abutment position between the detector 416 and the abutment ring 415. When the rotating wheel 409 abuts the sealing gasket, the elasticity of the rubber tube 411 causes the abutment ring 415 to abut against the sealing gasket. As the device moves, the abutment ring 415 constantly abuts against the sealing gasket at different locations due to the rotation of the detection ball 414, and all-round detection is achieved through the swinging and lifting of the detection rod 404. When the abutment ring 415 contacts a water seepage area, the detector 416 detects the water stain on the abutment ring 415 and sends a signal to the outside through the detection line 412. During or after detection, the water stain on the abutment ring 415 can be cleaned through the cleaning hole 417 to ensure the cleanliness of the abutment ring 415 and the detector 416.

[0056] In order to realize the marking of the water seepage, in this embodiment, see Figure 1 and Figure 8 The base plate 1 is provided with a positioning unit 5 for marking the water seepage area. The positioning unit 5 includes a main paint box 51 fixedly provided at the top of the base plate 1, and auxiliary paint boxes 52 fixedly provided at the four corners of the top of the base plate 1. Each of the auxiliary paint boxes 52 is connected to the main paint box 51 through a first connecting pipe 53 fixedly provided at its end. A liquid extraction pump is provided inside the auxiliary paint box 52. Second connecting pipes 54 are vertically fixedly provided at the four corners of the side of the base plate 1. The bottom ends of the second connecting pipes 54 are connected to nozzles 55, and the other ends of the second connecting pipes 54 are connected to the corresponding auxiliary paint boxes 52. The liquid extraction pump is controlled to pump the colored liquid in the main paint box 51 to the auxiliary paint box 52. After the detector 416 detects the water stain, the liquid extraction pump sprays the liquid in the auxiliary paint box 52 onto the pipe segment through the nozzle 55, thereby spraying and marking the leakage point, simplifying the work flow of subsequent maintenance personnel.

[0057] To control the operation of the device, see Figure 2 and Figure 5The base plate 1 is provided with a control unit 6 for controlling the operation of the equipment. The control unit 6 includes a microprocessor 61 fixedly installed inside the control box 3, which receives signals and controls the operation of various electrical appliances through the microprocessor 61. A placement portion 62 is fixedly installed at the top of the base plate 1, and a detachable remote control 63 electrically connected to the microprocessor 61 is installed in the placement portion 62. Control signals are sent to the microprocessor 61 through the remote control 63. An alarm 64 compatible with the detection unit 4 is fixedly installed at the top of the base plate 1, and the alarm 64 is electrically connected to the microprocessor 61. When water seepage is detected, the microprocessor 61 controls the alarm 64 to sound an alarm, promptly notifying relevant personnel to take measures to prevent the situation from escalating.

[0058] The present invention's shield segment joint water seepage detection device is used as follows: First, the handle 7 facilitates the device's transport and movement, adapting it to various working environments. A protective cover 8 effectively protects internal components from environmental influences, extending the device's service life. A microprocessor 61 receives signals and controls the operation of various electrical components. A remote control 63 sends control signals to the microprocessor 61. When the device needs to be fixed or moved, the first electric push rod 211 is activated, causing the crossbar 212 to rise and fall toward the base plate 1. During this process, the first guide rod 213 provides guidance.

[0059] During testing, the third electric push rod 403 is controlled to extend, driving the lifting rod 401 downward. The guide plate 402 guides the lifting rod 401 during movement. The second bidirectional motor 405 is controlled to operate, driving the testing rod 404 to swing via the worm 406 and worm gear 407, thereby inserting the rotating wheel 409 into the gap and contacting the sealing gasket at the joint. When the testing position is fixed, the vacuum pump 229 is controlled to operate, pumping air from the first and second pneumatic suction cups 222 and 228, thereby securing the substrate 1 to the tube sheet. During movement, control of the second pneumatic suction cup 228 is first released. Then, the second electric push rod 221 is controlled to extend, lifting the substrate 1, at which point the second pneumatic suction cup 228 is released from the tube sheet. The first bidirectional motor 226 is then controlled to operate, driving the lead screw 227 to rotate, causing the slider 225 to move the second pneumatic suction cup 228 within the slide 224, changing its position. The second electric push rod 221 is controlled to retract and lower the substrate 1. At this time, the second pneumatic suction cup 228 is re-engaged with the tube sheet. Then, the second pneumatic suction cup 228 is controlled to work again through the air pump 229 to fix it to the tube sheet. Then, the control of the first pneumatic suction cup 222 is released, and the second electric push rod 221 is controlled to retract. At this time, the first pneumatic suction cup 222 is separated from the tube sheet, and the first bidirectional motor 226 is reversed, so that the slide 224 moves along the slider 225, moving the substrate 1. Finally, the second electric push rod 221 is controlled to extend, so that the first pneumatic suction cup 222 contacts the tube sheet and is vacuumed to control it to be fixed to the tube sheet. This operation is repeated to achieve the movement of the substrate 1 on the tube sheet.

[0060] At this point, the elasticity of rubber tube 411 allows abutment ring 415 to abut against the sealing gasket. As the device moves, the rotation of detection ball 414 keeps abutment ring 415 in constant contact with the sealing gasket at different locations. The swinging and lifting of detection rod 404 allows for full-scale detection. When abutment ring 415 contacts a leaking area, detector 416 detects the water stain on abutment ring 415 and transmits a signal via detection line 412. During or after detection, the water stain on abutment ring 415 can be cleaned through cleaning hole 417 to ensure the cleanliness of abutment ring 415 and detector 416.

[0061] The pump controls the operation of the liquid extraction device, pumping the colored liquid from the main color tank 51 to the auxiliary color tank 52. After the detector 416 detects water damage, the pump sprays the liquid from the auxiliary color tank 52 onto the pipe segment through the nozzle 55, thereby marking the leak point and simplifying the subsequent maintenance work process. At the same time, the microprocessor 61 controls the alarm 64 to sound an alarm, notifying relevant personnel to take timely measures to prevent the situation from escalating.

[0062] The present invention also provides a water seepage detection method, which is applied to the above-mentioned water seepage detection device and comprises the following steps:

[0063] a. Check the equipment: make sure all components are in good condition, connect to the microprocessor 61 via the remote control 63, and adjust the detection parameters according to actual needs, including detection sensitivity and movement speed.

[0064] b. Equipment deployment: Use the handle 7 to carry the equipment to the vicinity of the shield segment that needs to be inspected, and ensure that the protective cover 8 is correctly installed and surrounds the upper part of the equipment to protect the internal components from the external environment.

[0065] c. Start the equipment: Use the second electric push rod 221 to adjust the height of the first pneumatic suction cup 222 so that it is tightly adsorbed on the surface of the shield segment to provide stable support. Control the extension of the third electric push rod 403 to drive the lifting rod 401 to descend. The second bidirectional motor 405 drives the worm gear 407 to rotate, driving the detection rod 404 to swing up and down. Start the first electric push rod 211 to lower the cross bar 212 until the detection ball 414 at the bottom of the rubber tube 411 contacts the sealing gasket at the joint of the shield segment.

[0066] d. Data collection and analysis: The device is driven to move by the mobile unit 22. During this process, the abutment ring 415 is always in contact with the sealing gasket at the joint of the shield segment. The detector 416 fixed inside the detection block 413 on the detection ball 414 starts to work, monitoring the changes in the electrical signal in real time and transmitting it to the microprocessor 61 through the detection line 412. The microprocessor 61 analyzes and processes the received data to determine whether there is leakage. When an abnormal signal is detected, an alarm is sounded through the alarm 64.

[0067] e. Marking the leakage point: When a leakage is detected, the microprocessor 61 controls the main paint box 51 to feed the auxiliary paint box 52. The auxiliary paint box 52 transports the paint to the nozzle 55 through the second connecting pipe 54 to spray and mark the leakage point so that subsequent maintenance personnel can quickly locate the problem area. The main paint box 51 stores the paint, and the auxiliary paint box 52 ensures that the paint will not be unable to be sprayed when the equipment is moved to the top.

[0068] f. Completion of the test: After the test is completed, retract the test rod 404, turn off all electric components, disconnect the power supply, remove the protective cover 8, check whether the equipment is intact, and do a good job of cleaning and maintenance.

[0069] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by persons of ordinary skill in the field to which the invention belongs. The use of "one" or "an" and other similar words in the specification and claims of this application does not necessarily indicate a quantitative limitation. "Include" or "comprising" and other similar words mean that the elements or objects preceding the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0070] The exemplary embodiments of the present invention are described in detail above with reference to preferred embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present invention, various variations and modifications may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention may be made without exceeding the scope of protection of the present invention.

Claims

1. A device for detecting water seepage at the joints of shield segments, characterized by: The invention comprises a base plate (1), a power module (2) for driving the base plate (1) to move is provided at the bottom end of the base plate (1), a control box (3) is fixedly provided at the bottom end of the base plate (1), a detection unit (4) for detecting water seepage at a joint is provided inside the control box (3), a positioning unit (5) for marking a water seepage location is provided on the base plate (1), and a control unit (6) for controlling the operation of the device is provided on the base plate (1); The detection unit (4) comprises lifting rods (401) arranged at both ends inside the control box (3), the lifting rods (401) being arranged horizontally with both ends facing the width direction of the substrate (1); A detection rod (404) capable of swinging up and down is hingedly provided at the middle position of the bottom end of the lifting rod (401), and a detection slot (410) is provided on the side of the corresponding detection rod (404). A rubber tube (411) is fixedly provided inside the detection slot (410), a detection line (412) is fixedly provided inside the rubber tube (411), and a detection block (413) electrically connected to the detection line (412) is fixedly provided at the bottom end of the rubber tube (411); A rotatable detection ball (414) is provided at the bottom end of the detection block (413); the detection ball (414) is rotatably mounted on the detection block (413) via an abutment ring (415) fixedly arranged on the outer surface of the detection ball (414); and a detector (416) abutting against the abutment ring (415) is fixedly arranged inside the detection block (413).

2. The shield segment joint water seepage detection device according to claim 1, characterized in that: Guide plates (402) are vertically fixed on the tops of both ends of the lifting rod (401), a third electric push rod (403) is vertically fixed on the top of the lifting rod (401), and the sleeve end of the third electric push rod (403) is fixed to the inner top of the control box (3); A second bidirectional motor (405) is fixedly provided on the lifting rod (401) on the side of the detection rod (404); a worm (406) is fixedly provided on the output end of the second bidirectional motor (405); a worm wheel (407) meshing with the worm wheel (406) is rotatably provided at the bottom end of the lifting rod (401); a rotating shaft (408) for driving the detection rod (404) to swing is coaxially fixedly provided on the side of the worm wheel (407); and rotating wheels (409) are rotatably provided on both sides of the bottom end of the detection rod (404); A cleaning hole (417) is provided on the side of the detection block (413) and runs horizontally through the detection block (413). The cleaning hole (417) is located at the abutting position between the detector (416) and the abutting ring (415).

3. The shield segment joint water seepage detection device according to claim 1, characterized in that: The base plate (1) is a rectangular structure, handles (7) are fixedly provided on both sides of the base plate (1), and a protective cover (8) is fixedly provided on the outside of the base plate (1), and the protective cover (8) surrounds the upper part of the device.

4. The shield segment joint water seepage detection device according to claim 1, characterized in that: The power module (2) comprises a lifting unit (21), the lifting unit (21) comprising a first electric push rod (211) vertically fixedly arranged at the two bottom ends in the length direction of the substrate (1), a cross bar (212) fixedly arranged at the telescopic end of the first electric push rod (211), and the first electric push rod (211) is located at the middle position of the top end of the cross bar (212), and the cross bar (212) is horizontally arranged below the substrate (1) with its two ends facing the width direction of the substrate (1); First guide rods (213) are vertically fixedly arranged on the cross bars (212) on both sides of the first electric push rod (211).

5. The shield segment joint water seepage detection device according to claim 4, characterized in that: The power module (2) comprises a mobile unit (22), the mobile unit (22) comprising a second electric push rod (221) vertically fixedly disposed at the bottom ends of both ends of a cross bar (212), and a first pneumatic suction cup (222) vertically fixedly disposed at the telescopic end of the second electric push rod (221); A guide rod (223) is fixedly provided at the bottom end of the cross bar (212) inside the first pneumatic suction cup (222), and the guide rod (223) is horizontally arranged along the length direction of the base plate (1). A slide groove (224) is provided at the bottom end of the guide rod (223) along its length direction, and a slider (225) is slidably provided inside the slide groove (224). A first bidirectional motor (226) is fixedly provided at the end of the guide rod (223), and a lead screw (227) is coaxially fixedly provided at the output end of the first bidirectional motor (226), and the lead screw (227) passes through the slide groove (224) along the length direction of the guide rod (223). The lead screw (227) passes through the slider (225) and is threadedly connected to the slider (225). A second pneumatic suction cup (228) is fixedly provided at the bottom end of the slider (225).

6. The shield segment joint water seepage detection device according to claim 5, characterized in that: An air pump (229) for driving the first pneumatic suction cup (222) and the second pneumatic suction cup (228) to work is fixedly arranged inside the control box (3).

7. The shield segment joint water seepage detection device according to claim 1, characterized in that: The positioning unit (5) comprises a main paint box (51) fixedly arranged at the top of the base plate (1), auxiliary paint boxes (52) fixedly arranged at the four corners of the top of the base plate (1), and each auxiliary paint box (52) is connected to the main paint box (51) via a first connecting pipe (53) fixedly arranged at its end; Second connecting tubes (54) are vertically fixed at the four corners of the side of the substrate (1), the bottom ends of the second connecting tubes (54) are connected to nozzles (55), and the other ends of the second connecting tubes (54) are connected to the corresponding auxiliary paint boxes (52).

8. The shield segment joint water seepage detection device according to claim 1, characterized in that: The control unit (6) comprises a microprocessor (61) fixedly arranged inside the control box (3); a placement portion (62) is fixedly arranged at the top of the base plate (1); a detachable remote controller (63) electrically connected to the microprocessor (61) is arranged inside the placement portion (62); an alarm (64) adapted to the detection unit (4) is fixedly arranged at the top of the base plate (1); and the alarm (64) is electrically connected to the microprocessor (61).

9. A water seepage detection method, applied to a shield segment joint water seepage detection device according to any one of claims 1 to 8, characterized in that: The detection method comprises the following steps: a. Check the equipment: make sure all components are in good condition, connect to the microprocessor (61) via the remote control (63), and adjust the detection parameters according to actual needs, including detection sensitivity and movement speed; b. Equipment deployment: Use the handle (7) to carry the equipment to the vicinity of the shield segment to be inspected, and ensure that the protective cover (8) is correctly installed and surrounds the upper part of the equipment to protect the internal components from the external environment; c. Start the equipment: Use the second electric push rod (221) to adjust the height of the first pneumatic suction cup (222) so that it is tightly attached to the surface of the shield segment to provide stable support, control the extension of the third electric push rod (403), drive the lifting rod (401) to descend, and the second bidirectional motor (405) drives the worm gear (407) to rotate, driving the detection rod (404) to swing up and down, start the first electric push rod (211) to make the cross bar (212) descend until the detection ball (414) at the bottom of the rubber tube (411) contacts the sealing gasket at the joint of the shield segment; d. Data collection and analysis: The device is driven to move by the moving unit (22). During this process, the abutment ring (415) is always in contact with the sealing gasket at the joint of the shield segment. The detector (416) fixed inside the detection block (413) on the detection ball (414) starts to work, monitors the change of the electric signal in real time, and transmits the electric signal to the microprocessor (61) through the detection line (412). The microprocessor (61) analyzes and processes the received data to determine whether there is leakage. When an abnormal signal is found, an alarm is generated through the alarm (64); e. Marking the leakage point: When leakage is detected, the microprocessor (61) controls the main paint box (51) to feed the auxiliary paint box (52), and the auxiliary paint box (52) transports the paint to the nozzle (55) through the second connecting pipe (54) to spray and mark the leakage point, so that subsequent maintenance personnel can quickly locate the problem area. The main paint box (51) stores the paint, and the auxiliary paint box (52) ensures that the paint will not be unable to be sprayed when the equipment is moved to the top; f. Complete the test: After the test is completed, retract the test rod (404), turn off all electric components, disconnect the power supply, remove the protective cover (8), check whether the equipment is intact, and do a good job of cleaning and maintenance.

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