Prefabricated pipe gallery expansion joint sealing structure

Abstract

The invention belongs to the technical field of comprehensive pipe galleries, and particularly relates to a prefabricated pipe gallery expansion joint sealing structure which comprises a prefabricated pipe gallery, a groove is formed in the side face of the prefabricated pipe gallery, optical fiber butt joints are arranged on the inner wall of the groove in an array mode, and a water stop belt matched with the groove is arranged on the inner wall of the groove. And a Mecanum wheel vehicle is arranged on one side of the prefabricated pipe gallery. According to the sealing structure, by arranging the optical fiber sensor network, the stress condition of the water stop belt can be monitored in real time, the optical fiber sensor can convert pressure changes into changes of optical signals for detection, meanwhile, the distributed optical fiber sensor network can accurately locate the position of a leakage point by analyzing signals of the sensors at different positions, and the sealing effect is improved. Therefore, the maintenance personnel can quickly and accurately find the problems and repair the problems in a targeted manner, so that the maintenance efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of integrated pipe gallery, and in particular to a sealing structure for expansion joints of a prefabricated pipe gallery. Background Art

[0002] As an important part of urban underground infrastructure, the sealing performance of the expansion joints of prefabricated pipe corridors is crucial to ensuring the normal operation of equipment inside the corridors, preventing groundwater leakage, and maintaining the structural stability of the corridors.

[0003] When facing the deformation of expansion joints caused by temperature changes, geological settlement and other factors, traditional waterstops are prone to reduced sealing performance or even damage, making it difficult to detect small leaks and damage to the waterstops in a timely manner, locating the leakage points, and high repair costs.

[0004] During the installation process, a lot of time is needed to adjust the position of the waterstop so that it is aligned with the expansion joint, which greatly prolongs the installation time of a single waterstop and slows down the overall construction progress. Especially when manually applying the sealing material, it takes a lot of energy and time to ensure uniform application. It is also impossible to adaptively adjust the pressure and position according to the unevenness of the waterstop surface like a coating mechanism, and it is difficult to accurately control the outflow of the sealing material. Multiple repeated application and supplementary application may occur, increasing the workload and time cost of construction.

[0005] In view of the above problems, the present invention proposes a prefabricated pipe gallery expansion joint sealing structure. Summary of the invention

[0006] Based on the technical problems of existing waterstop installation and status monitoring, the present invention proposes a prefabricated pipe gallery expansion joint sealing structure.

[0007] A prefabricated pipe gallery expansion joint sealing structure proposed in the present invention comprises a prefabricated pipe gallery, a groove is provided on the side of the prefabricated pipe gallery, an optical fiber joint is arranged in an array on the inner wall of the groove, a water stop belt matched with the groove is provided on the inner wall of the groove, a Mack wheeler is provided on one side of the prefabricated pipe gallery, a rectangular notch is provided on the upper surface of the Mack wheeler, a placement rack is provided on the outer side of the Mack wheeler, a mounting groove is provided on one side of the rectangular notch, a storage bucket is fixedly connected to the inner wall of the mounting groove, a liquid supply pump is provided on the upper surface of the storage bucket, a delivery pipe is fixedly connected to the liquid outlet end of the liquid supply pump, a first mechanical arm is fixedly connected to the inner bottom wall of the rectangular notch, an outer surface of the delivery pipe close to the first mechanical arm is mutually fitted with the outer surface of the first mechanical arm through a limiting ring, a placement rack is provided on one side of the rectangular notch, a smearing mechanism is provided at the end of the first mechanical arm, and pick-up and placement mechanisms are symmetrically provided on both sides of the rectangular notch along its symmetry axis.

[0008] Preferably, the smearing mechanism includes a storage box, one end of the storage box is fixedly connected to the end of the first mechanical arm, some of the storage boxes are provided with liquid inlet holes, the inner wall of the liquid inlet holes is fixedly connected to the inner wall of one end of the delivery tube, the inner wall of the storage box is fixedly connected to a fixing rod, a support rod is provided below the fixing rod, a spring is arranged in an array between the lower surface of the fixing rod and the upper surface of the support rod, two ends of the support rod are respectively slidably connected to the inner walls of the slide grooves provided on both sides of the lower end of the storage box, a cylinder is provided below the support rod, an annular groove is provided on the surface array of the cylinder, a bearing is fixedly connected to the inner wall of each annular groove, the outer ring of each bearing is fixedly connected to the lower surface of the support rod through a fixing block, the outer ring diameter of the bearing is the same as the diameter of the cylinder, and the two ends of the cylinder are fixedly connected to the two ends of the support rod through a connecting rod.

[0009] Preferably, the pick-and-place mechanism includes a moving device, the moving device includes a lead screw nut, a second mechanical arm is provided on one side of the lead screw nut, and a negative pressure adsorption disk is provided at the end array of the second mechanical arm.

[0010] Preferably, a distributed optical fiber sensor network is embedded inside the water stop.

[0011] Preferably, the water stop strip comprises, from the outside to the inside, a corrosion-resistant elastic layer, a shape memory alloy layer and a fiber-reinforced layer.

[0012] Preferably, microcapsules are dispersed in the waterstop matrix, and the microcapsules contain epoxy resin repairing agent.

[0013] Preferably, a slot that matches the surface of the optical fiber connector is provided on one side of the waterstop, and a ceramic guide ring is embedded in the slot, and its inner diameter tolerance is ±0.02mm. V-grooves are respectively provided at both ends of the waterstop, and the inner walls of the V-grooves are filled with PU sealant. Permanent magnets are embedded in the end faces of both ends of the waterstop, and the permanent magnets are neodymium iron boron N35 with nickel-plated surface.

[0014] Preferably, a signal transmission line is pre-buried in the groove of the prefabricated pipe gallery, the connection point of the optical fiber connector is connected to the connection point of the signal transmission line through a cable, and the optical fiber connector is plug-in connected to the slot.

[0015] Preferably, the mobile device includes a motor embedded in the Makgoog vehicle, the output shaft of the motor is fixedly connected to a first gear, the surface of the first gear is meshed with a second gear, a bearing 2 is provided on one side of the second gear, the inner ring of the bearing 2 is fixedly connected to a threaded rod, the side surface of the second gear is fixedly connected to one end of the threaded rod, the surface of the second gear is meshed with a toothed belt, and the length of the second gear is greater than the sum of the thickness of the first gear and the width of the toothed belt.

[0016] Preferably, a rectangular glue outlet is provided at the lower end of the storage box, and the width of the rectangular glue outlet is smaller than the diameter of the cylinder.

[0017] The beneficial effects of the present invention are:

[0018] 1. By setting up a fiber optic sensor network, the stress condition of the waterstop can be monitored in real time. The fiber optic sensor can convert these pressure changes into changes in optical signals for detection. Once the pressure exceeds the normal range, it means that the deformation of the expansion joint may affect the sealing performance of the waterstop. The system can issue an early warning in time to facilitate maintenance personnel to take measures to avoid problems such as leakage. By monitoring the changes in optical signals in the fiber optic sensor, the displacement of the waterstop during the deformation of the expansion joint can also be accurately measured; at the same time, the distributed fiber optic sensor network can accurately locate the position of the leakage point by analyzing the sensor signals at different positions, which enables maintenance personnel to quickly and accurately find the problem and carry out targeted repairs, thereby improving maintenance efficiency and reducing maintenance costs.

[0019] 2. By setting up a coating mechanism, when applying glue to the surface of the waterstop, the cylinder contacts the waterstop, and the spring can adaptively adjust the pressure and position of the cylinder according to the unevenness of the waterstop surface, so that the cylinder always fits well with the surface of the waterstop, ensuring that the sealing material can be evenly coated on the waterstop, avoiding the problem of local over-thickness or over-thinness, and improving the sealing effect; the rectangular glue outlet opened at the lower end of the storage box is smaller in width than the diameter of the cylinder. This design can effectively control the outflow of sealing material, avoiding material waste due to excessive glue output, and preventing the sealing effect from being affected by insufficient glue output, thereby improving the economy and accuracy of the glue application process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0021] Figure 2 This is a location diagram of the optical fiber butt joint of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0022] Figure 3A three-dimensional diagram of a waterstop of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0023] Figure 4 A V-groove position diagram of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0024] Figure 5 A slot position diagram of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0025] Figure 6 A position diagram of a coating mechanism of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0026] Figure 7 A three-dimensional diagram of a storage box of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0027] Figure 8 A cross-sectional view of a storage box of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0028] Fig. 9 A prefabricated pipe gallery expansion joint sealing structure proposed by the present invention Figure 8 Enlarged view of point C in the middle;

[0029] Fig.10 A bottom view of a storage box of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0030] Fig.11 A negative pressure adsorption plate position diagram of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0031] Fig.12 A cross-sectional view of a Macomb wheeler of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0032] Fig.13 A placement diagram of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0033] Fig.14 A prefabricated pipe gallery expansion joint sealing structure proposed by the present invention Fig.13 The enlarged view of point A in the middle;

[0034] Fig.15 A top view of a prefabricated pipe gallery expansion joint sealing structure proposed by the present invention;

[0035] Fig.16 A prefabricated pipe gallery expansion joint sealing structure proposed by the present invention Fig.15 Enlarged view of point B in the middle.

[0036] In the figure: 1. prefabricated pipe gallery; 10. groove; 11. optical fiber joint; 2. water stop; 20. V-shaped groove; 21. slot; 3. Macom wheeler; 30. placement rack; 31. installation slot; 32. storage bucket; 33. liquid supply pump; 34. delivery pipe; 35. placement rack; 4. first robotic arm; 5. coating mechanism; 50. liquid inlet hole; 51. storage box; 52. fixing rod; 53. support rod; 54. spring; 55. cylinder; 56. bearing; 57. glue outlet; 6. pick-and-place mechanism; 61. moving device; 610. motor; 611. first gear; 612. second gear; 613. bearing two; 614. threaded rod; 615. toothed belt; 62. second robotic arm; 63. negative pressure adsorption plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] Reference Figure 1-Figure 16 A prefabricated pipe gallery expansion joint sealing structure comprises a prefabricated pipe gallery 1, a groove 10 is provided on the side of the prefabricated pipe gallery 1, an optical fiber joint 11 is arranged in an array on the inner wall of the groove 10, a water stop 2 adapted thereto is arranged on the inner wall of the groove 10, a Macomb wheeler 3 is provided on one side of the prefabricated pipe gallery 1, a rectangular notch is provided on the upper surface of the Macomb wheeler 3, a placement frame 30 is provided on the outer side of the Macomb wheeler 3, a mounting groove 31 is provided on one side of the rectangular notch, a storage barrel 32 is fixedly connected to the inner wall of the mounting groove 31, a liquid supply pump 33 is provided on the upper surface of the storage barrel 32, and a liquid outlet end of the liquid supply pump 33 is fixedly connected to the liquid outlet end of the liquid supply pump 33. A conveying pipe 34 is connected, and the inner bottom wall of the rectangular groove is fixedly connected to the first robotic arm 4. An industrial camera is arranged at the end of the first robotic arm 4. The outer surface of the conveying pipe 34 close to the first robotic arm 4 is fitted with the outer surface of the first robotic arm 4 through a limiting ring. A placement rack 35 is arranged on one side of the rectangular groove, and a coating mechanism 5 is arranged at the end of the first robotic arm 4. Pick-up and placement mechanisms 6 are symmetrically arranged on both sides of the rectangular groove along its symmetry axis. An optical fiber docking joint 11 is arranged in the groove 10 on the side of the prefabricated pipe gallery 1, which is convenient for rapid docking of optical fibers when connecting the water stop belt 2 and the groove 10, thereby ensuring the continuity of the communication line.

[0039] In this embodiment, if Figure 7-Figure 10As shown, the smearing mechanism 5 includes a storage box 51, one end of which is fixedly connected to the end of the first mechanical arm 4, and some of the storage box 51 is provided with a liquid inlet hole 50, the inner wall of the liquid inlet hole 50 is fixedly connected to the inner wall of one end of the delivery tube 34, and the inner wall of the storage box 51 is fixedly connected to a fixing rod 52, and a support rod 53 is arranged below the fixing rod 52, and a spring 54 is arranged in an array between the lower surface of the fixing rod 52 and the upper surface of the support rod 53, and the two ends of the support rod 53 are respectively slidably connected to the inner wall of the slide groove opened on both sides of the lower end of the storage box 51, and the support rod 53 is connected to the inner wall of the slide groove opened on both sides of the lower end of the storage box 51. A cylinder 55 is arranged below the rod 53. An array of annular grooves are provided on the surface of the cylinder 55. A bearing 56 is fixedly connected to the inner wall of each annular groove. The outer ring of each bearing 56 is fixedly connected to the lower surface of the support rod 53 through a fixing block. The outer ring diameter of the bearing 56 is the same as the diameter of the cylinder 55. Bearings are fixedly connected to both ends of the cylinder 55 respectively, and the outer surface of the bearing is fixedly connected to the two ends of the support rod 53 through a connecting rod. A rectangular glue outlet 57 is provided at the lower end of the storage box 51. The width of the rectangular glue outlet 57 is smaller than the diameter of the cylinder 55.

[0040] Specifically, the fixing rod 52 and the support rod 53 are connected by a spring 54, and the two ends of the support rod 53 can slide in the slide groove at the lower end of the storage box 51. When applying glue to the surface of the waterstop 2, the cylinder 55 contacts the surface of the waterstop 2, and the spring 54 can adaptively adjust the pressure and position of the cylinder 55 according to the unevenness of the surface of the waterstop 2, so that the cylinder 55 always maintains a good fit with the surface of the waterstop 2, ensuring that the surface of the waterstop 2 is evenly coated with glue; the width of the rectangular glue outlet 57 opened at the lower end of the storage box 51 is smaller than the diameter of the cylinder 55. This design can control the outflow of the sealing material to a certain extent. The sealing material adopts nano-silicon dioxide modified epoxy resin. After the epoxy resin flows out of the rectangular glue outlet 57, it will be evenly spread by the cylinder 55, avoiding the problem of material waste or uneven coating due to excessive glue output, ensuring the accuracy and economy of the glue coating process.

[0041] In this embodiment, if Fig.11 and Fig.12As shown, the pick-and-place mechanism 6 includes a moving device 61, which includes a screw nut, a second mechanical arm 62 is provided on one side of the screw nut, an industrial camera is arranged at the end of the second mechanical arm 62, and a negative pressure adsorption plate 63 is arranged at the end array of the second mechanical arm 62. The moving device 61 includes a motor 610 embedded in the inside of the Makgomb wheeler 3, and the output shaft of the motor 610 is fixedly connected with a first gear 611, and the surface of the first gear 611 is meshed with a second gear 612, and a bearing 2 613 is provided on one side of the second gear 612, and the inner ring of the bearing 2 613 is fixedly connected with a threaded rod 614, and the side surface of the second gear 612 is fixedly connected to one end of the threaded rod 614, and the surface of the second gear 612 is meshed with a toothed belt 615, and the length of the second gear 612 is greater than the sum of the thickness of the first gear 611 and the width of the toothed belt 615.

[0042] Specifically, the screw structure can accurately control the horizontal position of the second robotic arm 62, expand the working range, and flexibly adapt to different construction scenes without the need to frequently move the Macom wheeler 3. The negative pressure adsorption plate 63 at the end of the second robotic arm 62 can firmly adsorb objects without damaging the surface. The robotic arm has a high degree of freedom, ensuring accurate grasping and placement; and the industrial camera can accurately identify the position, posture and contour of the waterstop 2 through a graphic algorithm. When the pick-and-place mechanism 6 picks up 2 sections of the waterstop, it can provide it with accurate coordinate information, allowing the pick-and-place mechanism 6 to quickly and accurately move to the position of the waterstop 2, reducing the time for finding and locating the waterstop 2, and improving the picking efficiency. When the waterstop 2 is installed in the groove 10 of the expansion joint of the prefabricated pipe gallery 1, the graphic algorithm of the industrial camera can accurately identify the position, size and shape of the expansion joint groove 10, and the pick-and-place mechanism 6 can accurately align the waterstop 2 with the groove 10 based on this information, thereby achieving high-precision installation, ensuring that the waterstop 2 and the groove 10 are perfectly matched, and improving the sealing effect.

[0043] In this embodiment, a fiber optic sensor network is embedded in the water stop 2. Specifically, when the expansion joint of the prefabricated pipe gallery 1 expands and contracts due to temperature changes, geological settlement and other factors, the water stop 2 will be squeezed or stretched to varying degrees. The fiber optic sensor can convert these pressure changes into changes in optical signals for detection. Once the pressure exceeds the normal range, it means that the deformation of the expansion joint may affect the sealing performance of the water stop 2. The system can issue an early warning in time to facilitate maintenance personnel to take measures to avoid water leakage and other problems. By monitoring the changes in the optical signal in the fiber optic sensor, the displacement of the water stop 2 during the deformation of the expansion joint can also be accurately measured; at the same time, the distributed fiber optic sensor network can accurately locate the position of the leakage point by analyzing the sensor signals at different positions, which enables maintenance personnel to quickly and accurately find the problem and carry out targeted repairs, thereby improving maintenance efficiency and reducing maintenance costs.

[0044] In this embodiment, the water stop strip 2 is composed of a corrosion-resistant elastic layer of EPDM rubber, a shape memory alloy layer and a fiber reinforcement layer from the outside to the inside.

[0045] Specifically, EPDM rubber has good elasticity and can flexibly expand and contract as the expansion joint undergoes expansion and contraction deformation, and always maintains a close fit with both sides of the expansion joint. This elasticity can effectively fill the gap in the expansion joint, prevent leakage of media such as water and gas, and provide a reliable sealing effect. At the same time, the elasticity of the rubber can also buffer the stress generated when the expansion joint is deformed, and reduce damage to the waterstop 2 and the corridor structure; the shape memory alloy layer can enhance the overall structural stability of the waterstop 2; the fiber reinforcement layer can effectively disperse stress, prevent the waterstop from tearing, breaking and other damage, and improve the durability and reliability of the waterstop.

[0046] In this embodiment, microcapsules are dispersed in the matrix of the water stop strip 2, and the microcapsules contain epoxy resin repairing agent.

[0047] Specifically, when the waterstop 2 has tiny cracks or damage due to external pressure, friction, aging or frequent deformation of the expansion joint during use, the microcapsules will rupture as the damage occurs, causing its outer shell to break. Once the microcapsules rupture, the epoxy resin repair agent inside will be released. The epoxy resin has good fluidity and adhesion. It can fully fill every corner of the crack and tightly combine with the base material of the waterstop 2. After curing, it can effectively restore the integrity and continuity of the waterstop 2, and prevent moisture and other media from penetrating through the cracks, thereby extending the service life of the waterstop 2, ensuring the long-term stability of its sealing performance, and reducing the frequency of manual inspection and repair, greatly reducing maintenance costs.

[0048] In this embodiment, a slot 21 that matches the surface of the optical fiber connector 11 is provided on one side of the waterstop 2, and a ceramic guide ring is embedded in the slot 21, and its inner diameter tolerance is ±0.02mm. V-grooves 20 are respectively provided at both ends of the waterstop 2, and the inner walls of the V-grooves 20 are filled with PU sealant. Permanent magnets are embedded in the end faces of both ends of the waterstop 2, and the permanent magnets are neodymium iron boron N35 with nickel-plated surfaces; a signal transmission line is pre-buried in the groove of the prefabricated pipe gallery 1, and the wiring point of the optical fiber connector 11 is connected to the wiring point of the signal transmission line through a cable, and the optical fiber connector 11 is connected to the slot 21 by plugging and unplugging.

[0049] Specifically, a slot 21 is provided on one side of the waterstop 2 to match the surface of the fiber optic connector 11, so that the fiber optic connector 11 can be accurately inserted into the waterstop 2 in cooperation with the industrial camera, thereby realizing precise positioning of the fiber optic connection and ensuring the stability and reliability of the fiber optic signal transmission; the inner diameter tolerance of the ceramic guide ring is ±0.02mm. This high-precision dimensional control ensures the close fit between the fiber optic connector 11 and the guide ring, reduces the signal transmission loss caused by too large a gap, and also avoids the problem of insertion difficulty or connector damage caused by too small a gap, further improving the quality of the fiber optic connection; after the magnetic suction is closed, the PU sealant automatically expands and fills the gap when it comes into contact with moisture, thereby improving the adhesion and sealing effect of the sealant; NdFeB N35 has high magnetism and residual magnetism, and can generate a strong attraction when the waterstop 2 is docked, so that the two ends of the waterstop 2 fit tightly, thereby enhancing the sealing of the connection part of the waterstop 2.

[0050] Reference Figure 1-Figure 16 , a construction method for a prefabricated pipe gallery expansion joint sealing structure, the operation steps are as follows:

[0051] Step 1, before installing the water stop 2 on the groove 10, place the segmented water stop 2 on the placement rack 30 according to the shape of the groove 10, with the side of the water stop 2 sections with the slot 21 facing upwards. After the placement is completed, control the Macom wheeler 3 to move to the side of the groove 10 close to the prefabricated pipe gallery 1, and the moving device 61 controls the second mechanical arm 62 of the machine to approach the placement rack 35. The second mechanical arm 62 drives the negative pressure adsorption plate 63 at its end to approach the water stop 2 sections with the cooperation of the industrial camera, and the negative pressure adsorption plate 63 adsorbs the water stop 2 sections. The second mechanical arm 62 drives the water stop 2 sections to move to the placement rack 35, and the negative pressure adsorption plate 63 releases the action of bonding with the surface of the water stop 2 sections;

[0052] Step 2, the first robotic arm 4 drives the coating mechanism 5 at its end to rotate, adjusts the rectangular glue outlet 57 at the lower end of the storage box 51 to fit the surface of the two sections of the waterstop, and the first robotic arm 4 drives the storage box 51 to move along the two sections of the waterstop. The cylinder 55 is forced to shrink and enter the storage box 51, and the spring 54 is forced to be compressed, and the sealing material inside the box flows out from the glue outlet 57. Under the action of the industrial camera, when the glue outlet 57 moves to the edge of the slot 21, the first robotic arm 4 drives the storage box 51 to move upward, and the cylinder 55 is restored to its original state under the action of the spring 54, forming a sealing action on the glue outlet 57 until the glue outlet 57 jumps over the upper area of ​​the slot 21. The first robotic arm 4 drives the storage box 51 to move downward so that the glue outlet 57 fits the two sections of the waterstop surface for the second time to continue the glue coating action;

[0053] Step three, after the glue is applied, the negative pressure adsorption plate 63 is driven by the second robotic arm 62 to flip 180 degrees, and the second robotic arm 62 drives the negative pressure adsorption plate 63 with the adsorption port facing upward to contact the back of the waterstop strip 2 sections placed on the placement rack 35 for adsorption. The second robotic arm 62 drives the waterstop strip 2 sections close to the groove 10, and the industrial camera identifies the position of the optical fiber docking connector 11 through an algorithm, and at the same time adjusts the slot 21 to be opposite to the optical fiber docking connector 11 until the side of the waterstop strip 2 section with the sealant is tightly fitted with the inner wall of the groove 10, and the optical fiber docking connector 11 is inserted into the slot 21.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A prefabricated pipe gallery expansion joint sealing structure, comprising a prefabricated pipe gallery (1), characterized in that: A groove (10) is provided on the side of the prefabricated pipe gallery (1), an optical fiber joint (11) is arranged in an array on the inner wall of the groove (10), a water stop (2) adapted thereto is arranged on the inner wall of the groove (10), a Macomb wheeler (3) is provided on one side of the prefabricated pipe gallery (1), a rectangular notch is provided on the upper surface of the Macomb wheeler (3), a placement frame (30) is provided on the outer side surface of the Macomb wheeler (3), a mounting groove (31) is provided on one side of the rectangular notch, a storage bucket (32) is fixedly connected to the inner wall of the mounting groove (31), and the storage bucket (32) is fixedly connected to the inner wall of the storage bucket (32). A liquid supply pump (33) is arranged on the upper surface of the storage barrel (32), a liquid outlet end of the liquid supply pump (33) is fixedly connected to a delivery pipe (34), an inner bottom wall of the rectangular notch is fixedly connected to a first mechanical arm (4), an outer surface of the delivery pipe (34) close to the first mechanical arm (4) is mutually fitted with an outer surface of the first mechanical arm (4) via a limiting ring, a placement rack (35) is arranged on one side of the rectangular notch, a coating mechanism (5) is arranged at the end of the first mechanical arm (4), and pick-up and placement mechanisms (6) are symmetrically arranged on both sides of the rectangular notch along its symmetry axis.

2. A prefabricated pipe gallery expansion joint sealing structure according to claim 1, characterized in that: The smearing mechanism (5) comprises a storage box (51), one end of which is fixedly connected to the end of the first mechanical arm (4), a portion of the storage box (51) is provided with a liquid inlet hole (50), the inner wall of the liquid inlet hole (50) is fixedly connected to the inner wall of one end of the delivery tube (34), a fixing rod (52) is fixedly connected to the inner wall of the storage box (51), a support rod (53) is arranged below the fixing rod (52), a spring (54) is arranged in an array between the lower surface of the fixing rod (52) and the upper surface of the support rod (53), and the support rod (53) is fixedly connected to the inner wall of the storage box (51). The two ends of the support rod (53) are respectively slidably connected to the inner walls of the slide grooves opened on both sides of the lower end of the storage box (51); a cylinder (55) is arranged below the support rod (53); an annular groove is arranged in an array on the surface of the cylinder (55); a bearing (56) is fixedly connected to the inner wall of each annular groove; the outer ring of each bearing (56) is fixedly connected to the lower surface of the support rod (53) through a fixing block; the outer ring diameter of the bearing (56) is the same as the diameter of the cylinder (55); the two ends of the cylinder (55) are respectively fixedly connected to the two ends of the support rod (53) through a connecting rod.

3. A prefabricated pipe gallery expansion joint sealing structure according to claim 2, characterized in that: A rectangular glue outlet (57) is provided at the lower end of the storage box (51), and the width of the rectangular glue outlet (57) is smaller than the diameter of the cylinder (55).

4. The prefabricated pipe gallery expansion joint sealing structure according to claim 3 is characterized in that: The pick-and-place mechanism (6) comprises a moving device (61), the moving device (61) comprises a screw nut, a second mechanical arm (62) is provided on one side of the screw nut, and a negative pressure adsorption disk (63) is arranged at the end array of the second mechanical arm (62).

5. The prefabricated pipe gallery expansion joint sealing structure according to claim 4 is characterized in that: A distributed optical fiber sensor network is embedded inside the water stop strip (2).

6. A prefabricated pipe gallery expansion joint sealing structure according to claim 5, characterized in that: The water stop strip (2) comprises, from the outside to the inside, a corrosion-resistant elastic layer, a shape memory alloy layer and a fiber reinforcement layer.

7. The prefabricated pipe gallery expansion joint sealing structure according to claim 6, characterized in that: Microcapsules are dispersed in the matrix of the waterstop (2), and the microcapsules contain an epoxy resin repairing agent.

8. The prefabricated pipe gallery expansion joint sealing structure according to claim 7, characterized in that: A slot (21) adapted to the surface of the optical fiber connector (11) is provided on one side of the waterstop (2), and a ceramic guide ring is embedded in the slot (21), and an inner diameter tolerance of the ceramic guide ring is ±0.02 mm. V-shaped grooves (20) are respectively provided at both ends of the waterstop (2), and the inner walls of the V-shaped grooves (20) are filled with PU sealant. Permanent magnets are embedded in the end faces of both ends of the waterstop (2), and the permanent magnets are neodymium iron boron N35 with a nickel-plated surface.

9. A prefabricated pipe gallery expansion joint sealing structure according to claim 8, characterized in that: A signal transmission line is pre-buried in the groove of the prefabricated pipe gallery (1); the connection point of the optical fiber connector (11) is connected to the connection point of the signal transmission line via a cable; and the optical fiber connector (11) is pluggably connected to the slot (21).

10. A prefabricated pipe gallery expansion joint sealing structure according to claim 9, characterized in that: The mobile device (61) includes a motor (610) embedded in the Makgol wheelbarrow (3), the output shaft of the motor (610) is fixedly connected to a first gear (611), the surface of the first gear (611) is meshed with a second gear (612), a bearing 2 (613) is provided on one side of the second gear (612), the inner ring of the bearing 2 (613) is fixedly connected to a threaded rod (614), the side surface of the second gear (612) is fixedly connected to one end of the threaded rod (614), the surface of the second gear (612) is meshed with a toothed belt (615), and the length of the second gear (612) is greater than the sum of the thickness of the first gear (611) and the width of the toothed belt (615).

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