Pipe joint anti-pulling device for communication passage and communication passage construction equipment

Abstract

This utility model relates to the technical field of tunnel construction equipment, and particularly to a pipe section anti-pull device and construction equipment for a connecting tunnel. The pipe section anti-pull device for the connecting tunnel includes an upper top ring assembly and a lower top ring assembly. The upper top ring assembly includes a traveling mechanism, an upper top ring structural member, and an upper anti-pull mechanism. The upper top ring structural member is slidably mounted on the starting trolley via the traveling mechanism. The upper top ring structural member is used to abut against the upper tunnel segment. The upper anti-pull mechanism can drive the upper top ring structural member to move along the extension direction of the connecting tunnel, and the upper anti-pull mechanism can rotate between a first position and a second position. The lower top ring assembly includes a lower top ring structural member and a lower anti-pull mechanism, and the lower anti-pull mechanism can drive the lower top ring structural member to move along the extension direction of the connecting tunnel. This utility model can prevent pipe section backlash during the assembly of both the upper and lower tunnel segments, and has small space requirements, making it suitable for construction in confined spaces, thus achieving safe and efficient connecting tunnel excavation projects.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction equipment, and in particular to a pipe section reverse tensioning device and construction equipment for a connecting passage. Background Technology

[0002] Connecting tunnels are typically located between left and right-hand tunnels, linking the two main tunnels. They are used for personnel evacuation in case of accidents and to facilitate rapid rescue operations. Currently, tunnel boring machine (TBM) construction for connecting tunnels is gaining increasing attention and use due to its advantages such as low construction risk, high efficiency, and high degree of automation. However, in traditional mechanical methods, segment advance and retraction in connecting tunnels are two separate systems.

[0003] The propulsion system uses hydraulic cylinders to propel the tunnel sections forward via a top ring. Each time a certain distance is traveled, a new tunnel section is added, and this process is repeated to achieve tunnel excavation.

[0004] For pipe section backlash prevention, after the hydraulic cylinder has advanced to its designed stroke, the pipe section is hoisted. At this point, the hydraulic cylinder needs to retract, but the advanced pipe section has a certain backlash force under tunnel pressure. Without a backlash prevention device, the entire section is at risk of backlash. Pipe section backlash prevention generally uses a pin inserted into the pipe section hoisting hole. However, this method has several drawbacks: firstly, it requires extremely high precision in pipe section manufacturing and construction; secondly, it has limited load-bearing capacity, as connecting tunnels are generally located at deep burial depths with high ground water pressure, resulting in significant backlash force; and thirdly, it requires a large amount of space, as in actual projects, there is insufficient installation space for the pipe section, and the pipe section cannot be effectively backlashed, making it impractical.

[0005] The existing equipment consists of two systems, which require a large construction space, involve long process times, are inconvenient to assemble and transport, and result in high equipment and construction costs.

[0006] Therefore, it is necessary to provide a new pipe section reverse pull device and construction equipment for connecting channels to solve the above-mentioned technical problems. Utility Model Content

[0007] The main purpose of this utility model is to provide a pipe section anti-pull device and pipe section construction equipment for connecting channels, which aims to solve the problems of insufficient installation space for pipe sections and the inability of pipe sections to effectively stop backward movement in actual engineering projects.

[0008] To achieve the above objectives, this utility model proposes a pipe section reverse-pull device for a connecting tunnel, installed inside the main tunnel, used for pipe section advancement and pipe section retraction in the connecting tunnel. The pipe section includes an upper segment and a lower segment, characterized by comprising an upper top ring assembly and a lower top ring assembly.

[0009] The upper top ring assembly includes a traveling mechanism, an upper top ring structural member, and an upper anti-pull mechanism. The traveling mechanism is slidably mounted on the starting trolley. The upper top ring structural member is mounted on the traveling mechanism. The upper top ring structural member is used to abut against the upper tunnel segment. The first end of the upper anti-pull mechanism is mounted on the inner wall of the main tunnel, and the second end is detachably connected to the upper top ring structural member. The upper anti-pull mechanism can drive the upper top ring structural member to move along the extension direction of the connecting channel, and the upper anti-pull mechanism can rotate around the first end between a first position and a second position.

[0010] The lower top ring assembly includes a lower top ring structure and a lower counter-pull mechanism. The lower top ring structure is vertically opposite to the lower top ring structure on both sides of the connecting channel. The lower top ring structure is used to abut against the lower tunnel segment. The lower counter-pull mechanism is connected between the lower top ring structure and the inner wall of the main tunnel. The lower counter-pull mechanism can drive the lower top ring structure to move along the extension direction of the connecting channel.

[0011] Optionally, the traveling mechanism includes two traveling components located at both ends of the upper top ring structure. Each traveling component includes a traveling body, a support rod, and a support adjustment rod. The traveling body can travel along the starting trolley. The support rod is connected between the traveling body and the upper top ring structure. One end of the support adjustment rod is hinged to the upper top ring structure, and the other end is detachably hinged to the traveling body. The support adjustment rod can extend and retract in the vertical direction.

[0012] Optionally, the support adjustment rod includes an upper connecting rod, a screw, and a lower connecting rod. The first end of the upper connecting rod is hinged to the upper top ring mechanism, and the second end is threaded to the screw. The first end of the lower connecting rod is threaded to the screw, and the second end is detachably hinged to the walking body via a pin.

[0013] Optionally, the upper reverse pull mechanism includes an upper connecting lug, an upper reverse pull drive, and an angle adjustment drive. The upper connecting lug is disposed on the inner wall of the main tunnel. The upper reverse pull drive is hinged to the upper connecting lug, and the output shaft of the upper reverse pull drive is detachably hinged to the upper top ring structure via a pin. The upper reverse pull drive can drive the upper top ring structure to move along the extension direction of the connecting channel. The angle adjustment drive is hinged between the upper connecting lug and the upper reverse pull drive, and the angle adjustment drive can drive the upper reverse pull drive to rotate around the upper connecting lug between a first position and a second position.

[0014] Optionally, there are two upper anti-pull mechanisms, which are spaced apart along the extension direction of the main tunnel; the output ends of the two upper anti-pull drive members are respectively connected to the two ends of the upper top ring structure.

[0015] Optionally, the lower pull mechanism includes a lower connecting lug and a lower pull drive member. The lower pull drive member is hinged to the lower connecting lug, and the output end of the lower pull drive member is connected to the lower top ring structure member. The lower pull drive member can drive the lower top ring structure member to move along the extension direction of the communication channel.

[0016] Optionally, there are two downward pulling mechanisms, which are spaced apart along the extension direction of the main tunnel; the output ends of the two downward pulling drive members are respectively connected to the two ends of the lower top ring structure.

[0017] Optionally, the upper top ring structure has the same structure as the lower top ring structure, and the side of the upper top ring structure facing the connecting channel forms a pipe section tightening surface, and an elastic pad is provided on the pipe section tightening surface.

[0018] Optionally, the connecting channel pipe section reverse pull device further includes a first track and a second track arranged on the starting trolley along the extension direction of the connecting channel, the traveling unit being slidably arranged on the starting trolley via the first track; the second track is arranged corresponding to the connecting channel, and the lower top ring structure is slidably arranged on the starting trolley via the second track.

[0019] In addition, this utility model also provides a construction equipment for a connecting passage, including a tunneling body, a launching trolley, a segment crane, and a segment counter-pull device for the connecting passage as described above. The tunneling body is capable of excavating between two main tunnels to form a connecting passage; the launching trolley and the segment crane are set in the main tunnel at the launching end; the segment crane is used to lift segments.

[0020] In this utility model's technical solution, the lower segment assembly must be performed before the upper segment assembly. During the lower segment assembly, the upper counter-pull mechanism tightens the upper top ring structure to prevent the upper segment from retracting. The lower counter-pull mechanism drives the lower top ring structure to move away from the connecting channel, creating a segment installation space between the lower top ring structure and the upper segment. After the lower segment is hoisted into the segment installation space, the lower counter-pull mechanism drives the lower top ring structure to move towards the connecting channel, pushing the lower segment to the position of the upper segment. At this point, the lower counter-pull mechanism tightens the lower top ring structure to prevent retraction. The upper counter-pull mechanism... The upper top ring structure is moved away from the connecting passage to create a segment installation space between it and the previous segment. The upper counter-pull mechanism is then disassembled from the upper top ring structure, retracting towards the connecting passage and rotating upwards to a second position to create working space for hoisting the upper segment. The upper segment is then hoisted onto the lower segment and connected to form a segment. The upper counter-pull mechanism is then returned to its first position and connected to the upper top ring structure, thus completing the assembly of one segment. This invention provides reliable segment backlash prevention during both upper and lower segment assembly operations, requires minimal space, and is suitable for construction in confined spaces, achieving safe and efficient connecting passage tunneling. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the installation of the pipe section reverse pull device for the communication channel in this embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the pipe section reverse pull device for the communication channel in this embodiment of the present invention;

[0024] Figure 3 for Figure 2 Side view;

[0025] Figure 4 This is a schematic diagram of the upper ring assembly in an embodiment of the present invention;

[0026] Figure 5 for Figure 4 Side view;

[0027] Figure 6 for Figure 5 Schematic diagram of the structure of the middle support adjustment rod;

[0028] Figure 7 This is a schematic diagram of the lower top ring assembly in an embodiment of the present invention;

[0029] Figure 8 for Figure 7 Side view;

[0030] Figure 9 This is a schematic diagram of the operation of hoisting and lowering the tunnel segments in an embodiment of this utility model;

[0031] Figure 10 This is a schematic diagram of the operation when the lower top ring structure is pressed against the lower tube segment in this embodiment of the present invention;

[0032] Figure 11 This is a schematic diagram of the operation before hoisting the upper tunnel segments in this embodiment of the present invention;

[0033] Figure 12 This is a schematic diagram of the operation of hoisting the upper tunnel segments in an embodiment of this utility model;

[0034] Figure 13 This is a schematic diagram of the operation when the upper top ring structure is pressed against the upper tube segment in an embodiment of this utility model.

[0035] Explanation of icon numbers:

[0036] A. Main tunnel, B. Connecting passage, C. Segment, C1. Upper segment, C2. Lower segment, D. Launching trolley, E. Segment crane, 1. Upper top ring assembly, 1.1. Traveling mechanism, 1.1.1. Traveling main body, 1.1.2. Support rod, 1.1.3. Support adjusting rod, F1. Upper connecting rod, F2. Screw, F3. Lower connecting rod, 1.2. Upper top ring structure, 1.3. Upper counter-pull mechanism, 1.3.1. Upper connecting lug, 1.3.2. Upper counter-pull drive, 1.3.3. Angle adjustment drive, 2. Lower top ring assembly, 2.1. Lower top ring structure, 2.2. Lower counter-pull mechanism, 2.2.1. Lower connecting lug, 2.2.2. Lower counter-pull drive, 3. First track, 4. Second track.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0040] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0043] This utility model proposes a pipe section anti-pull device and a pipe section construction equipment for connecting passages, aiming to solve the problems of insufficient installation space for pipe sections and the inability of pipe sections to effectively stop backward movement in actual engineering.

[0044] See Figures 1 to 8This embodiment provides a pipe section reverse-pull device for a connecting passage, installed inside the main tunnel A, used for advancing and stopping pipe section C of the connecting passage B. Pipe section C includes an upper segment C1 and a lower segment C2, and includes an upper top ring assembly 1 and a lower top ring assembly 2. The upper top ring assembly 1 includes a traveling mechanism 1.1, an upper top ring structural member 1.2, and an upper reverse-pull mechanism 1.3. The traveling mechanism 1.1 is slidably mounted on the starting trolley D; the upper top ring structural member 1.2 is mounted on the traveling mechanism 1.1; the upper top ring structural member 1.2 is used to abut against the upper segment C1; the first end of the upper reverse-pull mechanism 1.3 is mounted on the inner wall of the main tunnel A, and the second end is detachably connected to the upper top ring structural member 1.2. The upper anti-pull mechanism 1.3 is capable of driving the upper top ring structure 1.2 to move along the extension direction of the connecting channel B, and the upper anti-pull mechanism 1.3 is capable of rotating around the first end between the first position and the second position; the lower top ring assembly 2 includes a lower top ring structure 2.1 and a lower anti-pull mechanism 2.2, the lower top ring structure 2.1 and the lower top ring structure 2.2 are vertically opposite to each other on both sides of the connecting channel B, and the lower top ring structure 2.1 is used to abut against the lower segment C2; the lower anti-pull mechanism 2.2 is connected between the lower top ring structure 2.1 and the inner wall of the main tunnel A; the lower anti-pull mechanism 2.2 is capable of driving the lower top ring structure 2.1 to move along the extension direction of the connecting channel B.

[0045] See Figures 9 to 13In actual operation, the lower segment C2 must be assembled first, followed by the upper segment C1. When assembling the lower segment C2, the upper counter-pull mechanism 1.3 tightens the upper top ring structure 1.2 to prevent the upper segment C from regressing. The lower counter-pull mechanism 2.2 drives the lower top ring structure 2.1 to move away from the connecting channel B, creating a segment installation space between the lower top ring structure 2.1 and the upper segment C. After the lower segment C2 is hoisted into the segment installation space, the lower counter-pull mechanism 2.2 drives the lower top ring structure 2.1 to move closer to the connecting channel B, pushing the lower segment C2 to the position of the upper segment C. At this time, the lower counter-pull mechanism 2.2 tightens the lower top ring structure 2.1 to prevent regression. The upper counter-pull mechanism... Mechanism 1.3 drives the upper top ring structure 1.2 to move away from the connecting channel B, so that a segment installation space is formed between the upper top ring structure 1.2 and the upper pipe section C; the upper reverse pull mechanism 1.3 is separated from the upper top ring structure 1.2, and the upper reverse pull mechanism 1.3 retracts in the direction close to the connecting channel B and rotates upward to the second position to leave working space for the hoisting of the upper pipe section C1; then the upper pipe section C1 is hoisted onto the lower pipe section C2 and connected with the lower pipe section C2 to form pipe section C; at this time, the upper reverse pull mechanism 1.3 is returned to the first position and connected to the upper top ring structure 1.2; thus, the assembly of one ring of pipe section C is completed. This invention can reliably prevent pipe section C from rolling back during the assembly of upper segment C1 and lower segment C2, and requires little space, making it suitable for construction in confined spaces. It achieves safe and efficient tunneling of connecting passage B, with simple procedures, short construction time, low construction cost, and quick equipment assembly, transportation, and positioning methods, resulting in high efficiency.

[0046] In this embodiment, the pipe section reverse pulling device for the connecting channel also includes a segment support mechanism installed on the launching trolley D. The segment support mechanism adopts the existing segment support structure and is used to position and support the lower segment C2 to ensure the accuracy and stability of the segment hoisting. When the lower top ring structure 2.1 pushes the lower segment C2, the lower segment C2 can move from the segment support mechanism into the launching sleeve of the connecting channel B.

[0047] The traveling mechanism 1.1 includes two traveling components located at both ends of the upper top ring structure 1.2. Each traveling component includes a traveling body 1.1.1, a support rod 1.1.2, and a support adjusting rod 1.1.3. The traveling body 1.1.1 can travel along the starting trolley D. The support rod 1.1.2 connects the traveling body 1.1.1 and the upper top ring structure 1.2. One end of the support adjusting rod 1.1.3 is hinged to the upper top ring structure 1.2, and the other end is detachably hinged to the traveling body 1.1.1. The support adjusting rod 1.1.3 can extend and retract in the vertical direction. The support adjusting rod 1.1.3 includes an upper connecting rod F1, a screw F2, and a lower connecting rod F3. The first end of the upper connecting rod F1 is hinged to the upper top ring structure, and the second end is threaded to the screw F2. The first end of the lower connecting rod F3 is threaded to the screw F2, and the second end is detachably hinged to the traveling body 1.1.1 via a pin.

[0048] During operation, the length of the support adjusting rod 1.1.3 is increased by rotating screw F2 to offset the installation gap between the pin and the shaft hole, thereby enhancing the support of the traveling unit for the upper top ring structure 1.2. When hoisting the lower segment C2, due to the limited space, the lower segment C2 may interfere with the surrounding equipment during the hoisting process. At this time, screw F2 can be rotated in the opposite direction to appropriately shorten the length of the support adjusting rod 1.1.3 so that the second end pin of the lower connecting rod F3 is not stressed. Then, the pin of the lower connecting rod F3 is removed, and the upper connecting rod F1 is rotated to expand the hoisting space of the lower segment C2.

[0049] Furthermore, the upper reverse pull mechanism 1.3 includes an upper connecting lug 1.3.1, an upper reverse pull drive 1.3.2, and an angle adjustment drive 1.3.3. The upper connecting lug 1.3.1 is disposed on the inner wall of the main tunnel A; the upper reverse pull drive 1.3.2 is hinged to the upper connecting lug 1.3.1, and the output shaft of the upper reverse pull drive 1.3.2 is detachably hinged to the upper top ring structure 1.2 via a pin. The upper reverse pull drive 1.3.2 can drive the upper top ring structure 1.2 to move along the extension direction of the connecting channel B; the angle adjustment drive 1.3.3 is hinged between the upper connecting lug 1.3.1 and the upper reverse pull drive 1.3.2, and the angle adjustment drive 1.3.3 can drive the upper reverse pull drive 1.3.2 to rotate around the upper connecting lug 1.3.1 between a first position and a second position. In this embodiment, the upper reverse pull drive 1.3.2 and the angle adjustment drive 1.3.3 are selected from hydraulic cylinders, but are not limited to hydraulic cylinders. The upper reverse pull drive 1.3.2 provides tensile load to the upper top ring structure 1.2, and the angle adjustment drive 1.3.3 provides rotational load to the upper reverse pull drive 1.3.2. The upper connecting lug 1.3.1 is welded from steel plate and has sufficient strength and rigidity. The arc-shaped end is welded and fixed to the inner wall of the main tunnel A, and is provided with two lugs. One lug is connected to the upper reverse pull drive 1.3.2 through a pin, and the other lug is connected to the angle adjustment drive 1.3.3 through a pin to transmit the load.

[0050] Furthermore, there are two upper counter-pull mechanisms 1.3, which are spaced apart along the extension direction of the main tunnel A. The output ends of the two upper counter-pull drive components 1.3.2 are respectively connected to both ends of the upper top ring structure component 1.2. The two upper counter-pull mechanisms 1.3 work together to improve work efficiency and ensure work stability. Before hoisting the upper segment C1, simply detach the upper counter-pull drive component 1.3.2 on the side closest to the segment crane E from the upper top ring structure component 1.2, and lift the upper counter-pull drive component 1.3.2 on that side to perform the hoisting operation of the upper segment C1.

[0051] In this embodiment, the lower reverse pull mechanism 2.2 includes a lower connecting lug 2.2.1 and a lower reverse pull drive 2.2.2. The lower reverse pull drive 2.2.2 is hinged to the lower connecting lug 2.2.1, and the output end of the lower reverse pull drive 2.2.2 is connected to the lower top ring structure 2.1. The lower reverse pull drive 2.2.2 can drive the lower top ring structure 2.1 to move along the extension direction of the connecting channel B. The lower connecting lug 2.2.1 is welded from steel plate and has sufficient strength and rigidity. The arc-shaped end is welded and fixed to the main hole wall. The lower connecting lug is provided with a lug plate, which is connected to the lower reverse pull drive 2.2.2 through a pin. In this embodiment, the lower reverse pull drive 2.2.2 is a hydraulic cylinder.

[0052] Specifically, there are two downward pulling mechanisms 2.2, which are spaced apart along the extension direction of the main tunnel A. The output ends of the two downward pulling drive components 2.2.2 are respectively connected to both ends of the lower top ring structure component 2.1. The two downward pulling mechanisms 2.2 work together to improve work efficiency and ensure work stability.

[0053] In this embodiment, the upper top ring structure 1.2 and the lower top ring structure 2.1 have the same structure. The side of the upper top ring structure 1.2 facing the connecting channel B forms the clamping surface of pipe section C, and an elastic pad is provided on the clamping surface of pipe section C. In this embodiment, the elastic pad is a rubber plate. Based on the actual equipment layout in operation, the upper top ring structure 1.2 and the lower top ring structure 2.1 are provided with clearance grooves. The upper top ring structure 1.2 and the lower top ring structure 2.1 have good strength and rigidity and are key structural components for transmitting counter-tension loads.

[0054] In addition, the pipe section anti-pull device for the connecting passage also includes a first track 3 and a second track 4 set on the launching trolley D along the extension direction of the connecting passage B. The traveling unit is slidably set on the launching trolley D via the first track 3; the second track 4 is set correspondingly to the connecting passage B, and the lower top ring structure 2.1 is slidably set on the launching trolley D via the second track 4. Both the first track 3 and the second track 4 include a track body and a threaded top plate. The track body is welded together from a track plate and a connecting plate. The threaded bottom plate is welded and positioned on the launching trolley D and connected to the track body by bolts, respectively bearing the gravity and other loads within the upper top ring structure 1.2 and the lower top ring structure 2.1.

[0055] This embodiment also provides a construction equipment for a connecting passage, including a tunneling body, a launching trolley D, a segment crane E, and a segment counter-pull device for the connecting passage as described above. The tunneling body can excavate between two main tunnels A to form a connecting passage B; the launching trolley D and the segment crane E are set in the main tunnel A at the starting end; the segment crane E is used to lift the segment C.

[0056] Since the construction equipment for the connecting passage includes the pipe section reverse pull device for the connecting passage as described above, the construction equipment for the connecting passage possesses all the beneficial effects of the aforementioned pipe section reverse pull device for the connecting passage, which will not be elaborated here.

[0057] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A pipe section anti-pull device for a connecting passage, installed in the main tunnel (A), used for advancing and stopping pipe sections (C) of the connecting passage (B), wherein the pipe section (C) includes an upper segment (C1) and a lower segment (C2), characterized in that, Includes an upper top ring assembly (1) and a lower top ring assembly (2), The upper top ring assembly (1) includes a traveling mechanism (1.1), an upper top ring structural member (1.2), and an upper anti-pull mechanism (1.3). The traveling mechanism (1.1) is slidably mounted on the starting trolley (D). The upper top ring structural member (1.2) is mounted on the traveling mechanism (1.1). The upper top ring structural member (1.2) is used to abut against the upper segment (C1). The first end of the upper anti-pull mechanism (1.3) is mounted on the inner wall of the main tunnel (A), and the second end is detachably connected to the upper top ring structural member (1.2). The upper anti-pull mechanism (1.3) can drive the upper top ring structural member (1.2) to move along the extension direction of the connecting channel (B), and the upper anti-pull mechanism (1.3) can rotate around the first end between a first position and a second position. The lower top ring assembly (2) includes a lower top ring structure (2.1) and a lower counter-pull mechanism (2.2). The lower top ring structure (2.1) is vertically opposite to the lower top ring structure (2.2) on both sides of the connecting passage (B). The lower top ring structure (2.1) is used to abut against the lower segment (C2). The lower counter-pull mechanism (2.2) is connected between the lower top ring structure (2.1) and the inner wall of the main tunnel (A). The lower counter-pull mechanism (2.2) can drive the lower top ring structure (2.1) to move along the extension direction of the connecting passage (B).

2. The pipe section reverse pull device for the communication channel as described in claim 1, characterized in that, The traveling mechanism (1.1) includes two traveling components located at both ends of the upper top ring structure (1.2). Each traveling component includes a traveling body (1.1.1), a support rod (1.1.2), and a support adjustment rod (1.1.3). The traveling body (1.1.1) can travel along the starting trolley (D). The support rod (1.1.2) is connected between the traveling body (1.1.1) and the upper top ring structure (1.2). One end of the support adjustment rod (1.1.3) is hinged to the upper top ring structure (1.2), and the other end is detachably hinged to the traveling body (1.1.1). The support adjustment rod (1.1.3) can extend and retract in the vertical direction.

3. The pipe section reverse pull device for the connecting channel as described in claim 2, characterized in that, The support adjustment rod (1.1.3) includes an upper connecting rod (F1), a screw (F2) and a lower connecting rod (F3). The first end of the upper connecting rod (F1) is hinged to the upper top ring structure (1.2), and the second end is threaded to the screw (F2). The first end of the lower connecting rod (F3) is threaded to the screw (F2), and the second end is detachably hinged to the walking body (1.1.1) via a pin.

4. The pipe section reverse pull device for the connecting channel as described in claim 3, characterized in that, The upper reverse pull mechanism (1.3) includes an upper connecting lug (1.3.1), an upper reverse pull drive (1.3.2), and an angle adjustment drive (1.3.3). The upper connecting lug (1.3.1) is disposed on the inner wall of the main tunnel (A). The upper reverse pull drive (1.3.2) is hinged to the upper connecting lug (1.3.1), and the output shaft of the upper reverse pull drive (1.3.2) is detachably hinged to the upper top ring structure (1.2) via a pin. The upper reverse pull drive (1.3.2) can drive the upper top ring structure (1.2) to move along the extension direction of the connecting channel (B); the angle adjustment drive (1.3.3) is hinged between the upper connecting lug (1.3.1) and the upper reverse pull drive (1.3.2), and the angle adjustment drive (1.3.3) can drive the upper reverse pull drive (1.3.2) to rotate around the upper connecting lug (1.3.1) between a first position and a second position.

5. The pipe section reverse pull device for the connecting channel as described in claim 4, characterized in that, The number of the upper anti-pull mechanism (1.3) is two, and the two upper anti-pull mechanisms (1.3) are arranged at intervals along the extension direction of the main tunnel (A); the output ends of the two upper anti-pull drive members (1.3.2) are respectively connected to the two ends of the upper top ring structure member (1.2).

6. The pipe section reverse pull device for the connecting passage as described in any one of claims 2 to 5, characterized in that, The lower pull mechanism (2.2) includes a lower connecting lug (2.2.1) and a lower pull drive (2.2.2). The lower pull drive (2.2.2) is hinged to the lower connecting lug (2.2.1), and the output end of the lower pull drive (2.2.2) is connected to the lower top ring structure (2.1). The lower pull drive (2.2.2) can drive the lower top ring structure (2.1) to move along the extension direction of the communication channel (B).

7. The pipe section reverse pull device for the connecting channel as described in claim 6, characterized in that, There are two lower counter-pull mechanisms (2.2), and the two lower counter-pull mechanisms (2.2) are spaced apart along the extension direction of the main tunnel (A); the output ends of the two lower counter-pull drive members (2.2.2) are respectively connected to the two ends of the lower top ring structure member (2.1).

8. The pipe section reverse pull device for the connecting channel as described in claim 7, characterized in that, The upper top ring structure (1.2) has the same structure as the lower top ring structure (2.1). The upper top ring structure (1.2) forms a pipe section (C) tightening surface on the side facing the connecting channel (B). An elastic pad is provided on the pipe section (C) tightening surface.

9. The pipe section reverse pull device for the connecting channel as described in claim 8, characterized in that, The connecting channel pipe section reverse pull device also includes a first track (3) and a second track (4) arranged on the starting trolley (D) along the extension direction of the connecting channel (B). The traveling unit is slidably arranged on the starting trolley (D) via the first track (3). The second track (4) is arranged corresponding to the connecting channel (B). The lower top ring structure (2.1) is slidably arranged on the starting trolley (D) via the second track (4).

10. A construction device for a connecting passage (B), characterized in that, The tunneling system includes a tunneling body, a launching trolley (D), a segment crane (E), and a segment counter-pull device for a connecting passage as described in any one of claims 1 to 9. The tunneling body is capable of excavating a connecting passage (B) between two main tunnels (A). The launching trolley (D) and the segment crane (E) are located in the main tunnel (A) at the launching end. The segment crane (E) is used to lift segments (C).

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