Underground drainage pipeline non-stop water butt joint device and method

Abstract

This application provides a non-stop connection device and method for underground drainage pipelines. The device includes a sealing box, a cutting assembly, a connecting pipe section, and two sets of automatic splicing structures. The sealing box has positioning holes and alignment holes, and is also connected to a drainage channel. The cutting assembly is used to cut off the middle section of the original pipeline. The two ends of the connecting pipe section face the positioning holes and alignment holes, respectively. The outer side of the connecting pipe section has a loading seat that is slidably connected to it and also slidably connected to the bottom surface of the sealing box. The loading seat is driven by a linear drive component, which is connected to the loading seat through a locking structure. The two sets of automatic splicing structures are used to connect the upstream pipe section and the connecting pipe section, and the connecting pipe section and the newly constructed pipeline, respectively. The non-stop connection device and method for underground drainage pipelines provided by this application allows the upstream pipe section to be connected to the newly constructed pipeline through the connecting pipe section, and discharges the liquid from the upstream and downstream pipe sections to the outside of the pipeline well through the drainage channel, ensuring the safety of on-site operations.

Description

Technical Field

[0001] This application belongs to the field of municipal pipeline construction technology, specifically relating to a non-stop water connection device and method for underground drainage pipelines. Background Technology

[0002] With the acceleration of urbanization, existing water supply and drainage pipe networks often require the construction of new infrastructure such as subways, high-rise buildings, and underground parking lots, necessitating the relocation and rerouting of existing pipelines. After the new pipeline is laid, it is necessary to manually connect the existing and new pipelines within a manhole to introduce the fluid medium from the existing pipeline into the new pipeline. Simultaneously, the downstream section of the existing pipeline needs to be permanently sealed to prevent residual fluid medium from flowing back into the manhole. The manhole is a cavity located on the ground, through which the existing pipeline passes, and also within the cavity where the inlet of the new pipeline is located. Typically, the inlet of the new pipeline is oriented perpendicular to the axis of the portion of the existing pipeline within the cavity.

[0003] In existing technologies, when connecting existing and new pipelines, water must first be injected into the new pipeline to make the water level in the new pipeline basically the same as that in the existing pipeline, so as to balance the water pressure on both sides and create a relatively still underwater working environment for divers. Then, heavy-duty divers repeatedly pass through the pipeline well to the outside of the existing pipeline and carry out the docking operation underwater.

[0004] The inventors discovered that deep-sea diving operations inside pipeline wells present divers with extremely harsh working environments, including low visibility, complex water currents, and unforeseen dangers such as the presence of harmful gases or sediments within the pipelines, making it difficult to effectively guarantee their personal safety. Furthermore, this method demands high levels of physical fitness and skill from divers and is inefficient, making it unsuitable for large-scale, high-frequency pipeline relocation needs. Summary of the Invention

[0005] This application provides a non-stop water connection device and method for underground drainage pipes, aiming to solve the problems of high safety hazards and low operation efficiency of existing underwater connection methods for divers, and to achieve safe and efficient non-stop water connection operations.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: A non-stop connection device for underground drainage pipes is provided, comprising: A sealing box is used to be fixedly installed in a pipe well; the sealing box has a positioning hole that runs horizontally through both sides for the existing pipe to pass through, and an alignment hole that runs horizontally and vertically through the central axis of the positioning hole for the insertion of the end of the new pipe; the alignment hole is an elongated hole structure that extends axially along the positioning hole; the sealing box is also connected to a drainage channel for draining water outward. A cutting assembly, located inside the sealed box, is used to cut off the middle section of the original pipe and to move the cut pipe section so that both ends of the cut pipe section are separated from the upstream and downstream pipe sections, respectively. The connecting pipe section, housed within the sealed box, has an L-shaped cross-section, with one end oriented parallel to the axial direction of the positioning hole and the other end parallel to the axial direction of the alignment hole. The outer side of the connecting pipe section has a loading seat slidably connected to it along the axial direction of the positioning hole. The loading seat is slidably connected to the inner bottom surface of the sealed box along the axial direction of the alignment hole. The loading seat is driven by a linear drive component for moving it. When the loading seat moves the connecting pipe section to the point where both ends of the connecting pipe section are connected to the upstream pipe section and the connecting pipe section respectively, the loading seat closes the inlet of the drainage channel. The connecting pipe section and the loading seat are connected by a locking structure, which restricts the movement of the connecting pipe section relative to the loading seat. Two sets of automatic splicing structures are both installed inside the sealed box, and are used to connect the upstream pipe section and the connecting pipe section, as well as the connecting pipe section and the newly built pipeline, so as to make the upstream pipe section, the connecting pipe section and the newly built pipeline interconnected.

[0007] In one possible implementation, the cutting component includes: A lifting platform, housed within the sealed enclosure, is connected to the top of the enclosure via a traction mechanism; the lower side of the lifting platform has a limiting band for fitting around the existing pipe; and Two wire saws are arranged side by side in the horizontal direction under the lifting platform, respectively on both sides of the limiting band, and both are slidably connected to the lifting platform; the two wire saws are connected by an adjustable distance structure.

[0008] In one possible implementation, the traction mechanism includes: A winding shaft is disposed above the sealing box, its axis being parallel to the horizontal plane, and the winding shaft is rotatably connected to the upper end face of the sealing box; the winding shaft is drivenly connected to a first rotating motor; and A traction belt is disposed between the take-up shaft and the lifting platform, passing through the top wall of the sealed box, and both ends of the traction belt are connected to the take-up shaft and the lifting platform, respectively.

[0009] In one possible implementation, the adjustment structure includes: Two frames are respectively mounted on the two wire saws and are slidably connected to the lifting platform; each frame is fixedly connected to a first adjusting nut, and the two first adjusting nuts are coaxially arranged; and The first double-ended screw is rotatably mounted on the lifting platform, and has two first threaded portions distributed along the axial direction with opposite thread directions. The two first threaded portions are respectively threadedly connected to the two first adjusting nuts.

[0010] In one possible implementation, the automatic splicing structure includes: A pre-installed collar is used to coaxially fit onto the upstream pipe section or the newly constructed pipeline, and is slidably connected to the upstream pipe section or rotatably connected to the newly constructed pipeline; the pre-installed collar is driven by a rotational drive component for rotating it; and Alignment collar, coaxially sleeved at the end of the alignment tube section, is used to coaxially abut against the pre-installed collar; the alignment collar has a limiting hole that extends through its thickness direction and extends circumferentially, and one end of the limiting hole has an enlarged diameter portion. The pre-installed collar has an insert shaft extending toward the alignment collar, the insert shaft being used to pass through the limiting hole and extend outward; the extended end of the insert shaft has a limiting disc extending radially outward, the limiting disc being adapted to pass through the enlarged diameter portion and also adapted to abut against the side of the alignment collar facing away from the pre-installed collar.

[0011] In one possible implementation, the rotation drive component includes: A base platform is disposed within the sealed box; the base platform corresponding to the upstream pipe section is connected to the inner wall of the sealed box via an electric actuator, and the base platform is rotatably connected to the corresponding pre-installed collar; the base platform corresponding to the newly constructed pipeline is slidably connected to the inner wall of the sealed box along the axial direction of the positioning hole; and The second rotating motor is fixedly mounted on the base. The pre-installed collar has a transmission gear ring coaxially connected to it; the power output end of the second rotating motor has a transmission gear, which meshes with the transmission gear ring.

[0012] In one possible implementation, the lower side of the connecting pipe section has a slide; the slide is connected to the outer wall of the connecting pipe section via a connecting rod, and the slide is slidably connected to the loading seat along the axial direction of the positioning hole; the locking structure includes: Multiple grooves are formed on the upper surface of the loading seat and are spaced apart along the axial direction of the positioning holes; and A locking pin is slidably connected to the slide in the vertical direction and is adapted to be inserted into any of the grooves to restrict the movement of the slide relative to the loading seat.

[0013] In one possible implementation, the upper side of the slide has a cover plate with a through hole extending in the vertical direction; the slide has a connecting screw adapted to pass through the through hole and extend out, and the connecting screw is threaded with a connecting nut adapted to abut against the upper side of the cover plate. The cover plate is adapted to abut against the upper part of the locking pin to prevent the locking pin from disengaging from the groove.

[0014] In one possible implementation, the linear drive component includes: Two bosses are axially spaced within the sealing box along the positioning holes and are slidably connected to the inner bottom surface of the sealing box; each boss has a swing arm hinged to it in the vertical direction, and the swing end of the swing arm is hinged to the loading seat in the vertical direction; a second adjusting nut is fixedly connected to each of the two bosses, and the two second adjusting nuts are coaxially arranged; and The second double-ended screw is disposed inside the sealing box and is rotatably connected to the inner bottom surface of the sealing box; the second double-ended screw has two second threaded portions distributed along its axial direction and with opposite thread directions, and the two second threaded portions are respectively threadedly connected to the two second adjusting nuts.

[0015] In this embodiment, the sealing box is first fixed inside the pipe well. The existing pipe passes through the positioning hole, and the end of the new pipe is inserted into the elongated alignment hole. Based on the actual relative positions of the new and existing pipes, the position of the connecting pipe section on the loading seat is adjusted and then limited by the locking structure. Next, the cutting assembly is activated to cut off the middle section of the existing pipe, separating the cut section from the upstream and downstream pipe sections. At this point, liquid in the upstream and downstream pipe sections enters the sealing box and is discharged outside through the drainage channel. Then, the linear drive component is activated, moving the loading seat to connect the two ends of the connecting pipe section to the ends of the upstream and new pipes, respectively. Simultaneously, after the loading seat is in place, the inlet of the drainage channel is sealed to prevent external liquid from re-entering. Finally, two sets of automatic splicing structures are used to fix the upstream pipe section to the connecting pipe section and the connecting pipe section to the new pipe, respectively, allowing the upstream pipe section to connect to the new pipe via the connecting pipe section.

[0016] The core of the above method lies in integrating cutting, drainage, and docking processes into a sealed enclosure for automated completion. Through pre-adjustment of the connecting pipe section and the movement and closure of the loading seat, pipeline reconnection can be achieved without interrupting water flow. This technology ensures that, firstly, liquid flowing into the sealed enclosure after cutting is actively discharged through the drainage channel, allowing docking operations to be performed in a waterless environment, avoiding the safety risks associated with underwater operations for divers. Secondly, the L-shaped structure of the connecting pipe section, with its pre-adjustable relative position to the loading seat, can accommodate different angles and offsets between the new and existing pipelines. The elongated design of the alignment hole further compensates for installation errors, ensuring accurate alignment of both ends of the connecting pipe section simultaneously. The loading seat simultaneously closes the drainage channel when moving to the docking position, simplifying the operation process and preventing liquid from re-entering during subsequent construction.

[0017] The underground drainage pipeline relocation method and device provided in this embodiment, compared with the prior art, can safely and efficiently complete the pipeline relocation and relocation without interrupting the water supply to the original pipeline and without requiring personnel to enter the water for underwater operations, through the coordinated automated cutting, drainage and relocation processes in the sealed box. This systematically solves the core problems of high personal safety risks and low work efficiency in traditional deep-sea diving operations, and significantly improves the safety, adaptability and construction efficiency of pipeline relocation construction.

[0018] The technical solution adopted in this application also provides a method for connecting underground drainage pipes without interrupting water supply, which, based on the aforementioned method for connecting underground drainage pipes without interrupting water supply, includes the following steps: S1. Fix the sealing box inside the pipe well, so that the original pipe passes through the positioning hole and the end of the new pipe is inserted into the alignment hole; S2. Adjust the position of the connecting pipe section relative to the loading seat according to the relative positions of the newly built pipe and the existing pipe, and limit it by the locking structure; S3. Control the cutting assembly to start, so that the middle section of the original pipe is cut off, and the two ends of the cut pipe section are separated from the upstream pipe section and the downstream pipe section respectively; The liquid in the upstream pipe section and the downstream pipe section enters the sealed box and is discharged through the drainage channel; S4. Control the linear drive component to start, so that the loading seat moves to both ends of the connecting pipe section and connects to the upstream pipe section and the connecting pipe section respectively, while the loading seat closes the drainage channel; S5. The upstream pipe section and the connecting pipe section, as well as the connecting pipe section and the newly built pipeline, are connected by two sets of automatic splicing structures respectively.

[0019] The beneficial effects of the underground drainage pipe non-stop connection method provided in this embodiment are the same as those of the aforementioned underground drainage pipe non-stop connection device, and will not be repeated here. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 One of the three-dimensional structural schematic diagrams of the non-stop water connection device provided in the embodiments of this application; Figure 2 A second three-dimensional structural schematic diagram of the uninterrupted water connection device provided in the embodiments of this application; Figure 3 This is a three-dimensional structural diagram of the sealed box used in the embodiments of this application; Figure 4 This is an exploded view of the sealed box used in the embodiments of this application; Figure 5 This is a three-dimensional structural diagram of the cutting component used in the embodiments of this application; Figure 6 This is a three-dimensional structural diagram of the connecting pipe section and the loading seat in the combined state used in the embodiments of this application; Figure 7 This is an exploded structural diagram of the cover plate and connecting nut used in the embodiments of this application; Figure 8 This is an exploded structural diagram of the butt joint section and locking pin used in the embodiments of this application; Figure 9 This is an exploded structural diagram of the slide and loading seat used in the embodiments of this application; Figure 10 This is a cross-sectional view of the loading seat used in the embodiments of this application; Figure 11 This is a three-dimensional structural diagram of the linear drive component used in the embodiments of this application; Figure 12 for Figure 11 A magnified view of a portion of the upper circle at point A; Figure 13 This is a three-dimensional schematic diagram of the adjustment structure used in the embodiments of this application; Figure 14 for Figure 13 A magnified view of a portion of the upper circle at point B; Figure 15This is a three-dimensional structural diagram of the sealed box and base used in the embodiments of this application from a cross-sectional perspective. Figure 16 This is an exploded view of the automatic splicing structure used in the embodiments of this application; Figure 17 This is a cross-sectional view of the newly constructed pipe and pre-installed collar used in the embodiments of this application in the combined state; Figure 18 This is a cross-sectional view of the upstream pipe section and pre-installed collar used in the embodiments of this application in the combined state; Figure 19 This is an exploded view of the pre-assembled collar and transmission gear ring used in the embodiments of this application; Figure 20 A schematic flowchart illustrating the uninterrupted water connection method provided in this application embodiment; Explanation of reference numerals in the attached drawings: 1. Sealing box; 11. Positioning hole; 12. Alignment hole; 13. Drainage channel; 2. Cutting assembly; 21. Lifting platform; 211. Limiting belt; 22. Wire saw; 3. Connecting pipe section; 31. Connecting rod; 32. Slide table; 321. Connecting screw; 322. Connecting nut; 4. Automatic splicing structure; 41. Pre-installed collar; 411. Insert shaft; 412. Limiting plate; 413. Transmission gear ring; 42. Alignment collar; 421. Limiting hole; 4211. Expanded diameter section; 5. Loading seat; 6. Locking structure; 61. Groove; 62. Locking pin; 7. Traction mechanism; 71. Rewinding shaft; 711. First rotary motor; 72. Traction belt; 8. Adjustment structure; 81. Frame; 811. First adjustment nut; 82. First double-ended screw; 9. Cover plate; 91. Through hole; 10. Linear drive component; 101. Boss; 1011. Swing arm; 1012. Second adjustment nut; 102. Second double-ended screw; 20. Rotation drive component; 201. Base; 2011. Electric actuator; 202. Second rotary motor; 2021. Transmission gear; 100. Upstream pipe section; 200. Downstream pipe section; 300. Cut-off pipe section; 400. New pipeline. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Please refer to the following: Figures 1 to 19 The following describes the non-stop water connection device for the underground drainage pipe section 13 provided in this application. The non-stop water connection device proposed in this application includes a sealing box 1, a cutting assembly 2, a connecting pipe section 3, and two sets of automatic splicing structures 4.

[0027] The sealing box 1 is used for fixed installation inside the pipe shaft and adopts an internally hollow structure with sealed seams. In this embodiment, the sealing box 1 is assembled from prefabricated profiles; please refer to [further details omitted]. Figure 3 and Figure 4 The sealed box 1 consists of four parts, specifically: Firstly, the base plate is fixed to the bottom of the manhole by a frame located below it, so that there is a certain distance between the bottom surface of the base plate and the inner bottom wall of the manhole; wherein, the bottom of the frame is connected to the bottom surface of the manhole by a vertically downward extending pile structure.

[0028] Secondly, the lower housing adopts a structure that runs through the vertical direction and has a quadrilateral cross-section. In actual assembly, the lower housing is fitted around the outer periphery of the base plate, and the inner circumferential surface of the lower housing fits into the outer circumferential surface of the base plate. The fitting area is sealed by filling with sealing strips.

[0029] Thirdly, the upper box adopts a structure with an open lower end and a cross-section that matches the lower box. In actual assembly, the upper box is placed above the lower box, and the lower end face of the upper box and the upper end face of the lower box are in contact. The contact area is sealed by filling with sealing strips and supplementing with an external mechanical locking structure.

[0030] Both the upper and lower housings have pre-drilled holes on the same horizontal side. The pre-drilled hole in the upper housing penetrates the lower end face of the upper housing, and the pre-drilled hole in the lower housing penetrates the upper end face of the lower housing. After the upper and lower housings are assembled, the two pre-drilled holes combine to form a pre-drilled cavity that is open in the horizontal direction.

[0031] Fourth, the side enclosure adopts a horizontally open structure. In actual assembly, this side enclosure is located on one side of the reserved cavity opening and is connected to both the upper and lower enclosures. The bottom surface of the side enclosure opening is coplanar with the bottom surface of the reserved cavity. Furthermore, the side enclosure and the upper enclosure, as well as the side enclosure and the lower enclosure, are sealed using sealing strips supplemented by an external mechanical locking structure.

[0032] The sealing box 1 has two positioning holes 11, which are coaxially arranged and extend through opposite sides of the sealing box 1 to allow existing pipes to pass through. In this embodiment, each positioning hole 11 includes two first combined holes respectively opened on the lower end face of the upper box and the upper end face of the lower box, and each first combined hole extends along the thickness direction of the corresponding box. After the upper and lower boxes are assembled, the two first combined holes are joined together to form the positioning hole 11.

[0033] The sealing box 1 also has an alignment hole 12; the alignment hole 12 extends through one side of the sealing box 1 along its thickness direction, and the axial direction of the alignment hole 12 is perpendicular to the axial direction of the positioning hole 11, for insertion of the end of the newly constructed pipe 400. In this embodiment, the alignment hole 12 includes two second combined holes respectively opened on the lower end face of the upper box and the upper end face of the lower box, each second combined hole extending along the thickness direction of the corresponding box (here, the thickness direction is perpendicular to the axial direction of the aforementioned positioning hole 11). After the upper box and the lower box are assembled, the two second combined holes are joined together to form the alignment hole 12.

[0034] The alignment hole 12 is an elongated hole structure, and the extension direction of the elongated hole structure is parallel to the axis of the positioning hole 11. The reason for adopting this elongated hole structure is that after installing the sealing box 1 according to the original pipe cutting position, the positioning and installation of the new pipe 400 can be ensured by adjusting the relative position of the alignment hole 12 and the new pipe 400.

[0035] The sealed box 1 is also connected to a drainage channel 13 for draining water outwards. In this embodiment, the drainage channel 13 is installed on the inner bottom surface of the sealed box 1. Specifically, the bottom plate has a through-hole running vertically, and the drainage pipe section 13 is located on the lower side of the bottom plate, inside the frame, and communicates with the through-hole. Furthermore, the drainage channel 13 is equipped with a valve body for controlling its opening and closing, and a sensor for monitoring the fluid flow rate.

[0036] The cutting assembly 2 is installed inside the sealed box 1 and is used to cut off the middle section of the original pipe. After the original pipe is processed by the cutting assembly 2, it is divided into three sections. Along the original direction of fluid flow, these three sections are the upstream pipe section 100, the cut-off pipe section 300, and the downstream pipe section 200.

[0037] The cutting assembly 2 is also used to move the cut-off pipe section 300 so that the two ends of the cut-off pipe section 300 are separated from the upstream pipe section 100 and the downstream pipe section 200 respectively. At this time, the newly added liquid in the upstream pipe section 100 enters the sealing box 1, and the liquid remaining in the cut-off pipe section 300 and the downstream pipe section 200 enters the sealing box 1 at the same time. Finally, the liquid entering the sealing box 1 is discharged through the drain pipe section 13.

[0038] The connecting pipe section 3 is set inside the sealed box 1 and adopts an L-shaped cross-section structure. One end of the connecting pipe section 3 is parallel to the axial direction of the positioning hole 11, and the other end is parallel to the axial direction of the alignment hole 12. That is to say, in the sealed box 1, the two ends of the connecting pipe section 3 are respectively facing the wall surface where the positioning hole 11 of the upstream pipe section 100 is inserted and the wall surface where the alignment hole 12 is located.

[0039] The outer side of the connecting pipe section 3 has a loading seat 5, which is slidably connected to the connecting pipe section 3 along the axial direction of the positioning hole 11. That is, the connecting pipe section 3 has the freedom to move relative to the loading seat 5 along the axial direction of the positioning hole 11. Furthermore, the loading seat 5 is also slidably connected to the inner bottom surface of the sealing box 1 along the axial direction of the alignment hole 12. That is, the loading seat 5 has the freedom to move relative to the sealing box 1 along the axial direction of the alignment hole 12.

[0040] To drive the movement of the loading seat 5 relative to the sealing box 1, the loading seat 5 is driven by a linear drive member 10. The linear drive member 10 moves the loading seat 5, allowing both ends of the connecting pipe section 3 to connect with the upstream pipe section 100 and the connecting pipe section 3, respectively. In this state, the loading seat 5 simultaneously seals the inlet of the drainage channel 13 (this mechanical sealing method provides more precise timing compared to sealing the drainage channel 13 via the valve body). In this embodiment, the bottom surface of the loading seat 5 has a sealing gasket made of elastic material that can be embedded within the inlet of the drainage channel 13.

[0041] The connecting pipe section 3 and the loading seat 5 are connected by a locking structure 6. The locking structure 6 is used to connect the connecting pipe section 3 and the loading seat 5 to restrict the movement of the connecting pipe section 3 relative to the loading seat 5, so as to realize the position adjustment of the connecting pipe section 3 according to the relative position of the newly built pipe 400 and the alignment hole 12.

[0042] It should be further explained that: the bottom of the loading seat 5 has a guide rail that slides axially with it along the alignment hole 12, and this guide rail is connected to the inner bottom surface of the sealing box 1 through a recessed structure. Specifically: the top surface of the base plate and the inner bottom surface of the side box both have recessed grooves extending axially along the alignment hole 12, and the bottom surface of the upper box has a connecting groove that penetrates the wall surface where the upper box and the side box meet along the alignment hole 12; after the structure is assembled, the two recessed grooves are connected through the connecting groove to form a recessed structure into which the guide rail can be embedded.

[0043] Both sets of automatic splicing structures 4 are installed inside the sealed box 1, respectively located at the positioning hole 11 and the alignment hole 12 (corresponding to the upstream pipe section 100). In actual use, this automatic splicing structure 4 is used to connect the upstream pipe section 100 and the connecting pipe section 3, or the connecting pipe section 3 and the newly built pipe 400, so that the upstream pipe section 100 and the connecting pipe section 3 are connected, or the newly built pipe 400 and the connecting pipe section 3 are connected; the two sets of automatic splicing structures 4 cooperate with each other to realize the connection between the upstream pipe section 100, the connecting pipe section 3 and the newly built pipe 400, forming a new fluid transport channel that is different from the original pipeline.

[0044] In this embodiment, firstly, the sealing box 1 is fixed in the pipe well, so that the original pipe passes through the positioning hole 11 and the end of the new pipe 400 is inserted into the elongated alignment hole 12. Then, according to the actual relative position of the new pipe 400 and the original pipe, the position of the connecting pipe section 3 on the loading seat 5 is adjusted and then limited by the locking structure 6.

[0045] Subsequently, the cutting assembly 2 is activated to cut off the middle section of the original pipe, separating the cut pipe section 300 from the upstream pipe section 100 and the downstream pipe section 200. At this time, the liquid in the upstream pipe section 100 and the downstream pipe section 200 enters the sealed box 1 and is discharged out of the box through the drainage channel 13.

[0046] Next, the linear drive component 10 is activated, which moves the loading seat 5 to both ends of the connecting pipe section 3 to connect with the ends of the upstream pipe section 100 and the newly built pipe 400 respectively. At the same time, after the loading seat 5 moves into place, it closes the inlet of the drainage channel 13 to prevent external liquid from entering again.

[0047] Finally, the upstream pipe section 100 is fixedly connected to the connecting pipe section 3 and the connecting pipe section 3 to the newly built pipeline 400 through two sets of automatic splicing structures 4, so that the upstream pipe section 100 is connected to the newly built pipeline 400 through the connecting pipe section 3.

[0048] The core of the above method lies in integrating cutting, drainage, and connection processes into a sealed box 1 for automatic completion. Through pre-adjustment of the connecting section 3 and the movement and closure of the loading seat 5, pipe reconnection can be achieved without interrupting water flow. This technical means enables: On the one hand, the liquid that flows into the sealed box 1 after cutting is actively discharged through the drainage channel 13, so that the docking operation can be carried out in a waterless environment, avoiding the safety risks of underwater operations for divers; On the other hand, the connecting pipe section 3 adopts an L-shaped structure and its relative position with the loading seat 5 can be pre-adjusted, which can adapt to different included angles and offsets between the newly built pipe 400 and the original pipe. The elongated design of the alignment hole 12 further compensates for installation errors, ensuring that both ends of the connecting pipe section 3 are accurately aligned at the same time.

[0049] When the loading seat 5 moves to the docking position, it simultaneously closes the drainage channel 13, which simplifies the operation process and prevents liquid from flowing in again during subsequent construction.

[0050] The underground drainage pipeline non-stop connection method and device provided in this embodiment, compared with the prior art, can safely and efficiently complete pipeline relocation and connection without interrupting the water supply to the original pipeline and without requiring personnel to enter the water for underwater operations through the coordinated automated cutting, drainage and connection processes in the sealed box 1. This systematically solves the core problems of high personal safety risks and low work efficiency in traditional deep-sea diving operations, and significantly improves the safety, adaptability and construction efficiency of pipeline relocation construction.

[0051] In some embodiments, such as Figure 5 As shown, the aforementioned cutting assembly 2 includes a lifting platform 21 and two wire saws 22.

[0052] The lifting platform 21 is disposed inside the sealed box 1 and can move vertically relative to the sealed box 1. Specifically, in this embodiment, the sealed box 1 has four guide pillars, which are slidably connected to the four corners of the lifting platform 21 in the vertical direction. The upper and lower ends of each guide pillar are connected to the inner top and inner bottom surfaces of the sealed box 1, respectively. To facilitate the assembly of the guide pillars, each guide pillar has a convex shaft at both its upper and lower ends. Correspondingly, the upper surface of the aforementioned base plate and the inner top surface of the upper box are provided with recessed slots for inserting the convex shafts.

[0053] To achieve vertical position adjustment of the lifting platform 21, the lifting platform 21 is connected to the top of the sealing box 1 via a traction mechanism 7. In actual design, the traction mechanism 7 is an automated structure that can be remotely and precisely controlled, thereby freeing up on-site personnel from manual labor. This simplifies the operation steps and ensures the flexibility, accuracy, timeliness, and stability of the lifting platform 21's drive.

[0054] The lower side of the lifting platform 21 has a limiting band 211 for fitting around the outer periphery of the original pipe. The two locations where the original pipe was cut are respectively located on both sides of this limiting band 211. In this embodiment, the limiting band 211 is usually made of a material with a certain degree of elasticity. When it passes around the lower side of the original pipe and its two ends are connected to the lower side of the lifting platform 21, it can form a clamping structure that can restrict the movement of the original pipe relative to the lifting platform 21.

[0055] Two wire saws 22 are arranged horizontally side-by-side below the lifting platform 21, respectively on both sides of the limiting band 211, for processing the outer wall of the original pipe, forming cuts at both ends of the cut pipe section 300. In this embodiment, the wire saw 22 consists of a drive wheel, a guide wheel, a tension wheel, and a diamond wire wound in a closed loop around each wheel. During operation, the diamond wire is wrapped around the outer circumference of the original pipe to be cut, and the drive wheel is started to make the wire move at high speed in one direction, so that the diamond particles on the surface of the wire can be used to grind and cut the pipe wall. During the cutting process, by controlling the tightening of the wire and controlling the lifting platform 21 to rise slowly, it is ensured that the two wire saws 22 feed synchronously from both ends of the cut pipe section 300, ensuring a flat cut surface; at the same time, the limiting band 211 holds the pipe tightly to prevent vibration and displacement of the cutting position.

[0056] Each wire saw 22 is slidably connected to the lifting platform 21, and the sliding direction is parallel to the arrangement direction of the two wire saws 22; at the same time, the two wire saws 22 are connected by the adjustable distance structure 8 to make adaptive adjustments for different cutting requirements.

[0057] By adopting the above technical solution, the limiting band 211 hugs the original pipe to provide a positioning reference, and the two wire saws 22 cut synchronously from both sides to ensure that the cut surface is flat and the cuts are aligned. Among them, the adjustable distance structure 8 can adjust the distance between the two sets of wire saws 22 to adapt to the cutting needs of different pipe diameters. At the same time, the lifting platform 21 rises smoothly under the drive of the traction mechanism 7, which can control the cutting depth and avoid damaging the structure below.

[0058] In some embodiments, such as Figure 5 As shown, the traction mechanism 7 includes a winding shaft 71 and a traction belt 72.

[0059] A take-up shaft 71 is disposed outside the sealed box 1 and above the sealed box 1; the axial direction of the take-up shaft 71 is parallel to the horizontal plane, and the take-up shaft 71 is rotatably connected to the upper end face of the sealed box 1. In order to control the rotation of the take-up shaft 71, a first rotary motor 711 is drivenly connected to the take-up shaft 71. This first rotary motor 711 is fixedly disposed on the outer top surface of the sealed box 1, and its power output shaft is coaxially connected to the take-up shaft 71.

[0060] The traction belt 72 is disposed between the take-up shaft 71 and the lifting platform 21. It passes through the top wall of the sealed box 1, and both ends of the traction belt 72 are connected to the take-up shaft 71 and the lifting platform 21 respectively.

[0061] In practical use, the first rotating motor 711 drives the winding shaft 71 to rotate, thereby winding or releasing the traction belt 72 and controlling the lifting of the lifting platform 21. A sealing ring can be installed where the traction belt 72 passes through the top wall of the sealing box 1 to prevent liquid leakage. This structure is simple, reliable, and has a large lifting force, making it suitable for downhole operations.

[0062] In some embodiments, such as Figure 13 and Figure 14 As shown, the pitch adjustment structure 8 includes two frames 81 and a first double-headed screw 82.

[0063] Two frames 81 are respectively mounted on two wire saws 22 and are slidably connected to the lifting platform 21 to achieve a sliding connection between the wire saws 22 and the lifting platform 21. Each frame 81 is fixedly connected with a first adjusting nut 811, and the two first adjusting nuts 811 corresponding to the two frames 81 are coaxially arranged.

[0064] The first double-ended screw 82 is rotatably mounted on the lifting platform 21. It has two first threaded parts that are distributed along the axial direction and have opposite thread directions. The two first threaded parts are respectively threadedly connected to two first adjusting nuts 811.

[0065] In practical use, rotating the first double-ended screw 82 allows the two frames 81 and the wire saw 22 to move synchronously towards or away from each other, ensuring symmetrical cutting. Furthermore, the self-locking characteristic of the thread prevents changes in spacing during cutting, facilitates adjustment for different pipe diameters, and the scale can be used for data reference.

[0066] In some embodiments, such as Figures 15 to 19 As shown, the automatic splicing structure 4 includes a pre-installed collar 41 and an alignment collar 42.

[0067] The pre-installed collar 41 is coaxially fitted onto the upstream pipe section 100 or the newly constructed pipe 400, and is slidably connected to the upstream pipe section 100 or rotatably connected to the newly constructed pipe 400. Furthermore, the pre-installed collar 41 is drively connected to a rotation drive component 20, which drives the pre-installed collar 41 to rotate relative to the corresponding upstream pipe section 100 or newly constructed pipe 400.

[0068] The alignment collar 42 is coaxially fitted onto the end of the connecting pipe section 3 to coaxially abut against the pre-installed collar 41, so as to connect the connecting pipe section 3 with the upstream pipe section 100 or the newly built pipe 400.

[0069] To achieve locking of the pre-assembly collar 41 and the alignment collar 42, the alignment collar 42 has a limiting hole 421 extending circumferentially along its thickness direction, and one end of the limiting hole 421 has an enlarged diameter portion 4211. Correspondingly, the pre-assembly collar 41 has an insert shaft 411 extending toward the alignment collar 42, which is used to pass through the limiting hole 421 and extend outward; and the extending end of the insert shaft 411 has a limiting disc 412 extending radially outward, the outer diameter of which is less than or equal to the inner diameter of the enlarged diameter portion 4211 and greater than the width of the limiting hole 421, so that the combined structure of the insert shaft 411 and the limiting disc 412 can pass through the enlarged diameter portion 4211 and also abut against the side of the alignment collar 42 facing away from the pre-assembly collar 41.

[0070] In actual use, the pre-installed collar 41 is fitted onto the upstream pipe section 100 or the newly built pipe 400, and the alignment collar 42 is fixed to the end of the connecting pipe section 3. During docking, the pre-installed collar 41 is rotated by rotating the drive component 20, so that the insertion shaft 411 is aligned with the enlarged diameter portion 4211 of the limiting hole 421. At this time, by driving the alignment collar 42 to move axially along the alignment hole 12, the insertion shaft 411 on the pre-installed collar 41 corresponding to the newly built pipe 400 can be inserted into the limiting hole 421. At the same time, by controlling the pre-installed collar 41 corresponding to the upstream pipe section 100 to first move away from the connecting pipe section 3 and then move towards the connecting pipe section 3, the insertion shaft 411 on the pre-installed collar 41 corresponding to the upstream pipe section 100 can be inserted into another set of limiting holes 421.

[0071] The process of inserting the shaft 411 into the limiting hole 421 specifically includes: the limiting plate 412 passes through the enlarged diameter portion 4211, and the shaft 411 enters the limiting hole 421; then, the pre-installed collar 41 is rotated by a preset angle by the rotation drive component 20, so that the shaft 411 moves along the narrow part of the limiting hole 421, and the limiting plate 412 is locked on the back of the alignment collar 42 to achieve axial locking.

[0072] The above operations require no additional tools and can be performed remotely inside the sealed box 1 by rotating the drive component 20, resulting in a high degree of automation.

[0073] In some embodiments, such as Figure 17 and Figure 18 As shown, the rotation drive component 20 includes a base 201 and a second rotation motor 202.

[0074] The base 201 is installed inside the sealed box 1; in this embodiment, there are two sets of base 201, and the two sets of base 201 correspond to the upstream pipe section 100 and the newly built pipe 400, respectively. Specifically: The base 201 corresponding to the upstream pipe section 100 is connected to the inner wall of the sealing box 1 via an electric actuator 2011 to enable the base 201 to move axially relative to the sealing box 1 along the positioning hole 11. At the same time, the base 201 is rotatably connected to the corresponding pre-installed collar 41, that is, when the base 201 moves, the pre-installed collar 41 moves synchronously, and this synchronous movement occurs relative to the upstream pipe section 100.

[0075] The base 201 corresponding to the newly built pipeline 400 is slidably connected to the inner wall of the sealing box 1 along the positioning hole 11, so as to realize the movement of the base 201 relative to the sealing box 1 along the positioning hole 11 to match the position of the newly built pipeline 400 relative to the alignment hole 12.

[0076] The second rotary motor 202 is fixedly mounted on the base 201 and is connected to the pre-installed collar 41 for transmission to control the rotation of the pre-installed collar 41 relative to the base 201. Specifically, the pre-installed collar 41 has a transmission gear ring 413 coaxially connected to it; the power output end of the second rotary motor 202 has a transmission gear 2021, which meshes with the transmission gear ring 413.

[0077] In some embodiments, such as Figures 6 to 9 As shown, the lower side of the connecting pipe section 3 has a slide 32. The slide 32 is connected to the outer wall of the connecting pipe section 3 via a vertically extending connecting rod 31, and the slide 32 is slidably connected to the loading seat 5 along the axial direction of the positioning hole 11.

[0078] Based on this, the aforementioned locking structure 6 includes multiple grooves 61 and locking pins 62.

[0079] Multiple grooves 61 are formed on the upper surface of the loading seat 5 and are spaced apart along the axial direction of the positioning hole 11.

[0080] The locking pin 62 is slidably connected to the slide table 32 in the vertical direction and is adapted to be inserted into any of the grooves 61 to limit the horizontal movement of the slide table 32 relative to the loading seat 5.

[0081] The locking structure 6, through the engagement of the locking pin 62 with different grooves 61, enables precise adjustment and locking of the position of the connecting pipe section 3. Multiple grooves 61 provide multiple adjustment levels to accommodate different lateral offsets between the newly constructed pipe 400 and the existing pipe. The locking pin 62 automatically falls into the groove 61 under the action of gravity or spring force, making operation simple.

[0082] In some embodiments, such as Figures 6 to 9 As shown, the upper side of the slide table 32 has a cover plate 9, and the cover plate 9 has a through hole 91 extending in the vertical direction. Correspondingly, the slide table 32 has a connecting screw 321 adapted to pass through the through hole 91 and extend out, and a connecting nut 322 adapted to abut against the upper side of the cover plate 9 is threaded onto the connecting screw 321.

[0083] After assembly, the cover plate 9 is adapted to abut against the upper part of the locking pin 62 to prevent the locking pin 62 from disengaging from the groove 61. In other words, the cover plate 9 can effectively prevent the locking pin 62 from jumping out of the groove 61 when vibrating or tilting, ensuring locking reliability. That is, the connecting nut 322 cooperates with the connecting screw 321 to fix the cover plate 9 to the slide 32, while the lower surface of the cover plate 9 presses against the locking pin 62, keeping it in the groove 61.

[0084] In some embodiments, such as Figure 6 , Figure 11 and Figure 12 As shown, the linear drive component 10 includes two bosses 101 and a second double-ended screw 102.

[0085] Two bosses 101 are axially spaced within the sealing box 1 along the positioning holes 11, specifically within the side box, and are slidably connected to the inner bottom surface of the sealing box 1. Each boss 101 has a swing arm 1011 hinged to it in the vertical direction, and the swing end of the swing arm 1011 is hinged to the loading seat 5 in the vertical direction. In addition, two second adjusting nuts 1012 are fixedly connected to each of the two bosses 101, and the two second adjusting nuts 1012 are coaxially arranged.

[0086] The second double-ended screw 102 is disposed inside the sealing box 1 and is rotatably connected to the inner bottom surface of the sealing box 1. The second double-ended screw 102 has two second threaded portions distributed along its axial direction and with opposite thread directions, and the two second threaded portions are respectively threadedly connected to two second adjusting nuts 1012.

[0087] The linear drive component 10 rotates the second double-ended screw 102, causing the two bosses 101 to move synchronously towards or away from each other. This, in turn, pushes the loading seat 5 axially along the alignment hole 12 via the swing arm 1011. The hinged structure of the swing arm 1011 converts the horizontal movement of the bosses 101 into the horizontal movement of the loading seat 5, while absorbing minor vertical sway. This drive method offers a large stroke, sufficient thrust, and the self-locking property of the double-ended screw ensures the stability of the loading seat 5.

[0088] Based on the same inventive concept, such as Figure 20 As shown, this application embodiment also provides a method for connecting underground drainage pipes without interrupting water supply, based on the underground drainage pipe connection device proposed in any of the foregoing claims, including the following steps: S1. Fix the sealing box 1 inside the pipe well, so that the original pipe passes through the positioning hole 11 and the end of the new pipe 400 is inserted into the alignment hole 12.

[0089] S2. Based on the relative positions of the newly built pipeline 400 and the existing pipeline, adjust the position of the connecting pipe section 3 relative to the loading seat 5, and limit it through the locking structure 6.

[0090] S3. The control cutting assembly 2 is activated, cutting off the middle section of the original pipeline, and separating the two ends of the cut-off pipe section 300 from the upstream pipe section 100 and the downstream pipe section 200, respectively. The liquid in the upstream pipe section 100 and the downstream pipe section 200 enters the sealed box 1 and is discharged through the drainage channel 13.

[0091] S4. Control the linear drive component 10 to start, so that the loading seat 5 moves to both ends of the connecting pipe section 3 and connects with the upstream pipe section 100 and the connecting pipe section 3 respectively, while the loading seat 5 closes the drainage channel 13.

[0092] S5. The upstream pipe section 100 and the connecting pipe section 3 are connected by two sets of automatic splicing structures 4, respectively, as well as the connecting pipe section 3 and the newly built pipeline 400.

[0093] The underground drainage pipe uninterrupted connection method provided in this embodiment achieves safe and efficient connection of existing pipelines without interrupting water supply through the sealed environment of the sealed box 1, the automatic cutting of the cutting component 2, the active drainage of the drainage channel 13, the movable enclosure of the loading seat 5, and the rapid connection of the automatic splicing structure 4. This method eliminates the need for underwater operations by divers, avoiding personal safety risks, while significantly shortening construction time and improving the adaptability and reliability of pipeline network renovation. Its beneficial effects are the same as those of the aforementioned device and will not be repeated here.

[0094] The above content is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A non-stop connection device for underground drainage pipes, characterized in that, include: A sealing box is used to be fixedly installed in a pipe well; the sealing box has a positioning hole that runs horizontally through both sides for the existing pipe to pass through, and an alignment hole that runs horizontally and vertically through the central axis of the positioning hole for the insertion of the end of the new pipe; the alignment hole is an elongated hole structure that extends axially along the positioning hole; the sealing box is also connected to a drainage channel for draining water outward. A cutting assembly, located inside the sealed box, is used to cut off the middle section of the original pipe and to move the cut pipe section so that both ends of the cut pipe section are separated from the upstream and downstream pipe sections, respectively. The connecting pipe section, housed within the sealed box, has an L-shaped cross-section, with one end oriented parallel to the axial direction of the positioning hole and the other end parallel to the axial direction of the alignment hole. The outer side of the connecting pipe section has a loading seat slidably connected to it along the axial direction of the positioning hole. The loading seat is slidably connected to the inner bottom surface of the sealed box along the axial direction of the alignment hole. The loading seat is driven by a linear drive component for moving it. When the loading seat moves the connecting pipe section to the point where both ends of the connecting pipe section are connected to the upstream pipe section and the connecting pipe section respectively, the loading seat closes the inlet of the drainage channel. The connecting pipe section and the loading seat are connected by a locking structure, which restricts the movement of the connecting pipe section relative to the loading seat. Two sets of automatic splicing structures are both installed inside the sealed box, and are used to connect the upstream pipe section and the connecting pipe section, as well as the connecting pipe section and the newly built pipeline, so as to make the upstream pipe section, the connecting pipe section and the newly built pipeline interconnected.

2. The non-stop water connection device for underground drainage pipes as described in claim 1, characterized in that, The cutting assembly includes: A lifting platform, housed within the sealed enclosure, is connected to the top of the enclosure via a traction mechanism; the lower side of the lifting platform has a limiting band for fitting around the existing pipe; and Two wire saws are arranged side by side in the horizontal direction under the lifting platform, respectively on both sides of the limiting band, and both are slidably connected to the lifting platform; the two wire saws are connected by an adjustable distance structure.

3. The underground drainage pipeline non-stop connection device as described in claim 2, characterized in that, The traction mechanism includes: A winding shaft is disposed above the sealing box, its axis being parallel to the horizontal plane, and the winding shaft is rotatably connected to the upper end face of the sealing box; the winding shaft is drivenly connected to a first rotating motor; and A traction belt is disposed between the take-up shaft and the lifting platform, passing through the top wall of the sealed box, and both ends of the traction belt are connected to the take-up shaft and the lifting platform, respectively.

4. The underground drainage pipeline non-stop connection device as described in claim 2, characterized in that, The adjustment structure includes: Two frames are respectively mounted on the two wire saws and are slidably connected to the lifting platform; each frame is fixedly connected to a first adjusting nut, and the two first adjusting nuts are coaxially arranged; and The first double-ended screw is rotatably mounted on the lifting platform, and has two first threaded portions distributed along the axial direction with opposite thread directions. The two first threaded portions are respectively threadedly connected to the two first adjusting nuts.

5. The non-stop water connection device for underground drainage pipes as described in claim 1, characterized in that, The automatic splicing structure includes: A pre-installed collar is used to coaxially fit onto the upstream pipe section or the newly constructed pipeline, and is slidably connected to the upstream pipe section or rotatably connected to the newly constructed pipeline; the pre-installed collar is driven by a rotational drive component for rotating it; and Alignment collar, coaxially sleeved at the end of the alignment tube section, is used to coaxially abut against the pre-installed collar; the alignment collar has a limiting hole that extends through its thickness direction and extends circumferentially, and one end of the limiting hole has an enlarged diameter portion. The pre-installed collar has an insert shaft extending toward the alignment collar, the insert shaft being used to pass through the limiting hole and extend outward; the extended end of the insert shaft has a limiting disc extending radially outward, the limiting disc being adapted to pass through the enlarged diameter portion and also adapted to abut against the side of the alignment collar facing away from the pre-installed collar.

6. The non-stop water connection device for underground drainage pipelines as described in claim 5, characterized in that, The rotation drive component includes: A base platform is disposed within the sealed box; the base platform corresponding to the upstream pipe section is connected to the inner wall of the sealed box via an electric actuator, and the base platform is rotatably connected to the corresponding pre-installed collar; the base platform corresponding to the newly constructed pipeline is slidably connected to the inner wall of the sealed box along the axial direction of the positioning hole; and The second rotating motor is fixedly mounted on the base. The pre-installed collar has a transmission gear ring coaxially connected to it; the power output end of the second rotating motor has a transmission gear, which meshes with the transmission gear ring.

7. The underground drainage pipeline non-stop connection device as described in claim 1, characterized in that, The lower side of the connecting pipe section has a sliding platform; the sliding platform is connected to the outer wall of the connecting pipe section via a connecting rod, and the sliding platform is slidably connected to the loading seat along the axial direction of the positioning hole; the locking structure includes: Multiple grooves are formed on the upper surface of the loading seat and are spaced apart along the axial direction of the positioning holes; and A locking pin is slidably connected to the slide in the vertical direction and is adapted to be inserted into any of the grooves to restrict the movement of the slide relative to the loading seat.

8. The non-stop water connection device for underground drainage pipelines as described in claim 7, characterized in that, The slide has a cover plate on its upper side, and the cover plate has a through hole extending in the vertical direction; the slide has a connecting screw adapted to pass through the through hole and extend out, and the connecting screw is threaded with a connecting nut adapted to abut against the upper side of the cover plate; The cover plate is adapted to abut against the upper part of the locking pin to prevent the locking pin from disengaging from the groove.

9. The non-stop water connection device for underground drainage pipes as described in claim 1, characterized in that, The linear drive component includes: Two bosses are axially spaced within the sealing box along the positioning holes and are slidably connected to the inner bottom surface of the sealing box; each boss has a swing arm hinged to it in the vertical direction, and the swing end of the swing arm is hinged to the loading seat in the vertical direction; a second adjusting nut is fixedly connected to each of the two bosses, and the two second adjusting nuts are coaxially arranged; and The second double-ended screw is disposed inside the sealing box and is rotatably connected to the inner bottom surface of the sealing box; the second double-ended screw has two second threaded portions distributed along its axial direction and with opposite thread directions, and the two second threaded portions are respectively threadedly connected to the two second adjusting nuts.

10. A method for connecting underground drainage pipes without interrupting water supply, based on any one of claims 1-9, characterized in that, Includes the following steps: S1. Fix the sealing box inside the pipe well, so that the original pipe passes through the positioning hole and the end of the new pipe is inserted into the alignment hole; S2. Adjust the position of the connecting pipe section relative to the loading seat according to the relative positions of the newly built pipe and the existing pipe, and limit it by the locking structure; S3. Control the cutting assembly to start, so that the middle section of the original pipe is cut off, and the two ends of the cut pipe section are separated from the upstream pipe section and the downstream pipe section respectively; The liquid in the upstream pipe section and the downstream pipe section enters the sealed box and is discharged through the drainage channel; S4. Control the linear drive component to start, so that the loading seat moves to both ends of the connecting pipe section and connects to the upstream pipe section and the connecting pipe section respectively, while the loading seat closes the drainage channel; S5. The upstream pipe section and the connecting pipe section, as well as the connecting pipe section and the newly built pipeline, are connected by two sets of automatic splicing structures respectively.

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