Slurry pipe extending device

Abstract

The utility model relates to the technical field of tunneling construction, in particular to a slurry pipe extending device, which solves the problem that an extending device in the prior art cannot install a slurry pipe during bidirectional construction of a tunnel, and comprises a pipeline extending frame arranged outside the tunnel and a dragging component arranged in the tunnel, a slurry pipeline assembly is arranged on the pipeline extending frame and the dragging assembly, and a pipeline extending assembly used for increasing the length of the slurry pipeline assembly is arranged on the pipeline extending frame. The mud pipe extension device has the beneficial effects that the mud pipe extension device is arranged outside the tunnel, so that the rear matched occupied space of the heading machine can be reduced, and the construction space in the tunnel is more sufficient; in addition, the space outside the tunnel is large, the pipeline extension assembly can be rapidly disassembled, reversed and assembled, back tunneling construction can be conveniently carried out, and the construction efficiency is improved; the dragging assembly is arranged in the tunnel, during tunneling construction, the dragging assembly can pull the slurry pipe in the tunnel to move forwards, and it is guaranteed that slurry can be discharged smoothly in the construction process.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel excavation construction, in particular to a mud pipe extension device. Background Art

[0002] In recent years, with the development of shield construction technology, tunnel construction projects have become more and more numerous. The slurry shield is a type of shield machine that has the advantages of fast excavation speed, high precision in controlling surface settlement, and minimal interference with the soil around the excavation face. It is widely used for excavation of tunnels with high water pressure, shallow overburden, and unstable strata. The slurry pipeline is the only way for the slurry shield to discharge slag. Conventional slurry pipelines are divided into two parts, one fixedly installed on the shield machine, and the other fixedly installed on the inner wall of the tunnel segment. The two parts of the pipeline are connected to form a mud circulation system. However, the shield machine is constantly moving forward, and the slurry pipe cannot extend with the shield machine. This requires the design of a slurry pipeline extension device that can continuously extend with the shield machine.

[0003] The existing invention patent with publication number CN110985036A discloses a slurry pipe extension device and extension method for a slurry shield, comprising a shield machine mud pipe, a mud hose, a traveling frame mud pipe, and a tunnel mud pipe connected in sequence. The traveling frame mud pipe is movably mounted on a trailer via a traveling mechanism, and the mud hose is movably mounted on the trailer via a sliding member. The trailer is also provided with a mud pipe crane for hoisting the mud pipe. Under the action of a hydraulic motor, the traveling frame is driven to move forward and backward, thereby driving the mud pipe on the traveling frame and the mud hose on the top of the trailer to move. When the pipe needs to be replaced after excavating a certain distance, the mud pipe crane lifts the spare mud pipe placed on the other side of the trailer for replacement.

[0004] The above patents meet the needs of slurry shield excavation, but in the actual construction process there is a short distance, multi-tunnel construction condition, specifically Figure 6 As shown, during double-line back-to-back excavation construction, there are four starting positions in a starting well, and the relative positions of the mud pipe and the mud pipeline extension device at each starting position are different. In the invention patent with publication number CN110985036A, in the construction of a short-distance, multi-tunnel project, the mud pipe in a tunnel is arranged on one side of the tunnel, and the mud pipe cannot be adjusted on the left and right sides of the extension device, that is, the mud pipeline extension device cannot adapt well to the mud pipe extension needs, affecting construction efficiency.

[0005] In summary, although some progress has been made in the research on slurry pipe extension devices in shield-type equipment, it still cannot meet the needs of short-distance and multi-tunnel shield construction. Utility Model Content

[0006] The utility model provides a mud pipe extension device, which solves the problem in the prior art that the mud pipe cannot be switched and adjusted on both sides of the extension device.

[0007] The technical solution of the present utility model is achieved as follows:

[0008] The mud pipe extension device includes a pipe extension frame arranged outside the tunnel and a towing assembly arranged inside the tunnel. The pipe extension frame and the towing assembly are provided with a mud pipe assembly, and the pipe extension frame is provided with a pipe extension assembly for increasing the length of the mud pipe assembly. The pipe extension assembly is arranged outside the tunnel, that is, the pipe extension assembly is arranged at the starting well position. During excavation construction, the mud pipe moves forward with the tunnel boring machine under the action of the towing assembly. After the mud pipe moves a certain distance, the pipe extension assembly is used to extend the pipe at the rear of the mud pipe to increase the length of the mud pipe. The pipe extension assembly does not enter the tunnel, which can reduce the space occupied by the supporting equipment behind the tunnel boring machine and make the construction space in the tunnel more sufficient. In addition, the pipe extension assembly is arranged at the starting position, which has a large space and can quickly complete the disassembly, reversal and assembly of the pipe extension assembly, facilitating back-to-back excavation construction and improving construction efficiency.

[0009] The pipeline extension assembly includes a traveling frame mounted on a pipeline extension frame and a drive assembly for driving the traveling frame. The mud pipeline assembly includes a tunnel mud pipe and a connecting pipe. The tunnel mud pipe is mounted on a pulling assembly, and the connecting pipe is mounted on the traveling frame. Gate valves are respectively provided on the rear end of the tunnel mud pipe and the connecting pipe, and the connecting pipe is detachably connected to the tunnel mud pipe. During tunneling, the gate valves are opened, and the traveling frame and the pulling assembly respectively drive the connecting pipe and the tunnel mud pipe forward, at which point the mud is discharged outward through the mud pipe. During mud pipe extension, the gate valves are closed, disconnecting the tunnel mud pipe from the connecting pipe. The traveling frame drives the connecting pipe away from the tunnel mud pipe, and an extension mud pipe is installed between the tunnel mud pipe and the connecting pipe. After the extension mud pipe is installed, the gate valves are opened, completing the pipeline extension process.

[0010] The mud pipe assembly also includes a mud hose mounted on the pipe extension frame. One end of the mud hose is connected to the connecting pipe, and the other end is connected to the external slurry drainage pipe. During excavation or pipe extension, the mud hose expands or contracts with the movement of the connecting pipe, while the connection between the mud hose and the external slurry drainage pipe remains fixed, ensuring the stability of the external slurry drainage pipe.

[0011] The mud hose is arranged in a U shape on the pipeline extension frame. When the connecting pipe moves, the connecting pipe drives the mud hose to expand and contract, and the bendability of the U-shaped pipe is used to compensate for the pipeline length required for the extension process.

[0012] The drive assembly includes a drive sprocket and a driven sprocket rotatably mounted at the front and rear ends of the pipe extension frame. Chains are wound around the drive sprocket and the driven sprocket, which are connected to a traveling frame. The pipe extension frame is provided with a traveling drive member that drives the drive sprocket. The traveling drive member is a hydraulic drive motor that drives the drive sprocket, which in turn drives the traveling frame via the chain to move the traveling frame on the pipe extension frame, thereby advancing or retracting the connecting pipe on the traveling frame.

[0013] The pipeline extension frame is provided with a travel track, to which the travel frame is connected. A limit assembly is provided on the travel track to limit the travel range of the travel frame. The limit assembly serves as a protective mechanism to prevent the travel frame from over-moving. The limit assembly is a cross limit switch. When the travel frame reaches a certain position, it strikes the cross limit switch, which in turn controls the travel drive to stop, effectively preventing the travel frame from over-moving or leaving the travel track, thereby ensuring safe operation of the device.

[0014] The traveling frame is provided with a fine adjustment assembly connected to the connecting pipe. The fine adjustment assembly can adjust the position of the connecting pipe. When the mud pipe is extended, the fine adjustment assembly is used to accurately connect the connecting pipe with the extended mud pipe, thereby improving the extension construction efficiency of the extended mud pipe.

[0015] The pipeline extension frame is equipped with a pipeline crane. The pipeline crane is a swing-arm mud pipe crane used for lifting and transporting mud pipelines. The pipeline crane can lift the extended mud pipe between the tunnel mud pipe and the connecting pipe, so that the two ends of the extended mud pipe are connected to the tunnel mud pipe and the connecting pipe respectively.

[0016] The pipeline extension frame is equipped with a dirt collection box, which is connected to the connecting pipe via a slurry collection assembly. The dirt collection box is located below the mud pipeline assembly. After the gate valve is closed and before the tunnel mud pipe is disconnected from the connecting pipe, the slurry collection assembly is used to pump the mud in the connecting pipe into the dirt collection box. This prevents mud from spilling when the tunnel mud pipe is disconnected from the connecting pipe, ensuring a clean and tidy construction site.

[0017] The pulling assembly includes a movable drive and a roller structure. The roller structure is mounted on a movable track on the tunnel sidewall, and a tunnel slurry pipe is suspended on the roller structure. The movable drive is located within the tunnel and connected to the roller structure. The movable drive drives the roller structure to move within the tunnel, thereby driving the tunnel slurry pipe attached to the roller structure to move within the tunnel, ensuring smooth slurry discharge during tunnel excavation.

[0018] The beneficial effects of the present invention are as follows: 1. The mud pipe extension device is arranged outside the tunnel, which can reduce the space occupied by the supporting equipment behind the tunnel boring machine, making the construction space in the tunnel more sufficient; in addition, the pipeline extension component is arranged at the starting position, and the starting position has a large space, which can quickly complete the disassembly, reversing and assembly of the pipeline extension component, so that the relative position of the mud pipe and the extension device can be adjusted when the tunnel boring machine is facing away from the starting point, which is convenient for back-to-back tunneling construction and improves construction efficiency.

[0019] 2. A dragging assembly is set up in the tunnel. During excavation construction, the dragging assembly can pull the mud pipe in the tunnel forward to ensure that the mud can be discharged smoothly during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of the mud pipe extension device of the utility model;

[0022] Figure 2 This is a top view of the slurry pipe extension device outside the tunnel;

[0023] Figure 3 for Figure 1 Schematic diagram of the AA direction;

[0024] Figure 4 Indicates the drag component Figure 1 ;

[0025] Figure 5 Indicates the drag component Figure 2 ;

[0026] Figure 6 This is a construction condition diagram of four starting positions of a wellhead;

[0027] Figure 7 This is a schematic diagram of the mud pipe extension device being arranged at the wellhead when the tunnel boring machine is tunneling in the positive direction;

[0028] Figure 8 This is a schematic diagram of the mud pipe extension device being arranged at the wellhead when the tunnel boring machine is tunneling in the reverse direction.

[0029] In the figure: 1. Pipe extension frame, 2. Pipe crane, 3. Mud pipeline assembly, 4. Sewage collecting box, 5. Pipe extension assembly, 6. Mud hose, 7. Connecting pipe, 8. Fine adjustment assembly, 9. Pipe clamp, 10. Gate valve, 11. Traveling frame, 12. Traveling track, 13. Driving sprocket, 14. Driven sprocket, 15. Slurry collection assembly, 16. Extended mud pipe, 17. Drag assembly, 18. Pull rope drive, 19. Roller structure, 20. Mud pipe extension device. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1, as Figure 1 、 Figure 2 、 Figure 3 As shown, the mud pipe extension device includes a pipe extension frame 1 disposed outside the tunnel and a drag assembly 17 disposed inside the tunnel. The pipe extension frame 1 and the drag assembly 17 are provided with a mud pipeline assembly 3. The pipe extension frame 1 is provided with a pipe extension assembly 5 for increasing the length of the mud pipeline assembly 3. The pipe extension assembly 5 is disposed outside the tunnel, specifically in the starting shaft. During tunneling construction, the pipe extension assembly 5 does not enter the tunnel, which can reduce the space occupied by the supporting equipment behind the tunnel boring machine and provide more construction space inside the tunnel. The mud pipeline assembly 3 inside the tunnel can be moved by the drag assembly 17 to ensure smooth discharge of the mud. In addition, the pipe extension assembly is disposed at the starting position, which has a large space and can quickly complete the disassembly, reversal, and assembly of the pipe extension assembly, facilitating back-to-back tunneling construction and improving construction efficiency.

[0032] Specifically, such as Figure 7 、 Figure 8 As shown, when the double-track tunnel is excavated in the reverse direction, the mud pipe extension device 20 is assembled at the starting position. Specifically, when the mud pipe is located on the left side of the excavation tunnel in the excavation interval, the mud pipe extension device 20 is arranged on the left side of the excavation direction, that is, Figure 7 、 8 When the mud pipe is located on the right side of the tunnel in the excavation interval, the mud pipe extension device 20 is arranged on the right side of the excavation direction, that is, Figure 7 、 8 The position shown in Ⅱ; wherein the assembly structure of the mud pipe extension device 20 at position Ⅰ is the same, and the assembly structure of the mud pipe extension device 20 at position Ⅱ is the same.

[0033] Furthermore, the pipeline extension assembly 5 includes a traveling frame 11 arranged on the pipeline extension frame 1 and a driving assembly for driving the traveling frame 11 to move. The mud pipeline assembly 3 includes a tunnel mud pipe and a connecting pipe 7. The tunnel mud pipe is arranged on the dragging assembly 17, and the connecting pipe 7 is arranged on the traveling frame 11. Gate valves 10 are respectively provided on the tail end of the tunnel mud pipe and the connecting pipe 7. The connecting pipe 7 is detachably connected to the tunnel mud pipe. The driving assembly drives the traveling frame 11 to move forward and backward on the pipe extension frame 1, thereby driving the connecting pipe 7 to move; specifically, during tunneling construction, the tunnel boring machine moves forward, and the tunnel mud pipe moves forward with the tunnel boring machine. At the same time, the traveling frame 11 drives the connecting pipe 7 to move forward with the tunnel mud pipe; after the tunnel boring machine has traveled a certain distance, when the length of the mud pipe needs to be extended, the gate valves 10 on the tunnel mud pipe and the connecting pipe 7 are closed, and then the connection between the tunnel mud pipe and the connecting pipe 7 is disconnected. The traveling frame 11 drives the connecting pipe 7 to move backward, away from the tunnel mud pipe, so that space is left between the tunnel mud pipe and the connecting pipe 7 for installing the extended mud pipe 16.

[0034] Furthermore, the mud pipe assembly 3 also includes a mud hose 6, which is mounted on the pipe extension frame 1. One end of the mud hose 6 is connected to the connecting pipe 7, and the other end of the mud hose 6 is connected to the external slurry discharge pipeline. Specifically, both ends of the mud hose 6 are connected to the traveling frame 11 and the pipe extension frame 1 via pipe clamps 9, ensuring the stable installation of the mud hose 6. During the excavation process or pipeline extension, the mud hose 6 stretches or contracts with the movement of the connecting pipe 7, while the connection position of the mud hose 6 to the external slurry discharge pipeline remains fixed, ensuring the stability of the external slurry discharge pipeline and the smooth discharge of mud.

[0035] Further, if Figure 2 As shown, the mud hose 6 is U-shaped and arranged on the pipeline extension frame 1. When the connecting pipe 7 moves, the connecting pipe 7 drives the mud hose 6 to expand and contract, and the bendability of the U-shaped pipe is used to compensate for the pipeline length required to be overlapped during the extension process.

[0036] The mud pipeline extension process is as follows: when the traveling frame 11 drives the connecting pipe 7 to move forward to the tunnel entrance position, the excavation construction is stopped, the gate valves 10 on the tunnel mud pipe and the connecting pipe 7 are closed, and the connection between the tunnel mud pipe and the connecting pipe 7 is disconnected; the traveling frame 11 carries the connecting pipe 7 to move away from the tunnel entrance position, leaving space for installing the extended mud pipe 16; the extended mud pipe 16 is hoisted between the tunnel mud pipe and the connecting pipe 7, one end of the extended mud pipe 16 is connected to the tunnel mud pipe, and the other end of the extended mud pipe 16 is connected to the connecting pipe 7. After the extended mud pipe 16 is connected, the gate valve 10 is opened and the mud pipeline extension is completed.

[0037] Example 2, based on Example 1, a slurry pipe extension device, wherein the drive assembly includes a drive sprocket 13 and a driven sprocket 14, which are rotatably arranged at the front and rear ends of the pipe extension frame 1, and a chain is wound around the drive sprocket 13 and the driven sprocket 14, which is connected to the traveling frame 11, and the pipe extension frame 1 is provided with a traveling drive member that drives the drive sprocket 13 to rotate. In this embodiment, the traveling drive member is a hydraulic drive motor, which can drive the drive sprocket 13 to rotate forward or reverse. When the drive sprocket 13 rotates, it drives the chain to move, and the movement of the chain can drive the traveling frame 11 to move forward and backward on the pipe extension frame 1, thereby enabling the traveling frame 11 to drive the connecting pipe 7 to move forward and backward.

[0038] Furthermore, the pipeline extension frame 1 is provided with a travel track 12, to which the travel frame 11 is connected. The travel track 12 is provided with a limit assembly for limiting the range of movement of the travel frame 11. The travel frame 11 is provided with rollers that roll back and forth on the travel track 12, reducing the friction of the travel frame 11 on the pipeline extension frame 1 and facilitating the movement of the travel frame 11. In this embodiment, the limit assembly is a cross limit switch, and a cross limit switch is provided at both the front and rear ends of the travel track 12. When the travel frame 11 moves and hits the cross limit switch, the drive assembly shuts down, and the travel frame 11 stops moving, preventing the travel frame 11 from leaving the travel track 12 and ensuring the safety of the mud pipe extension device.

[0039] Furthermore, a fine adjustment assembly 8 is provided on the traveling frame 11, and the fine adjustment assembly 8 is connected to the connecting pipe 7. The fine adjustment assembly 8 can adjust the position of the connecting pipe 7, so that the connecting pipe 7 can better dock with the extended mud pipe 16 during the mud pipe extension construction, thereby facilitating the installation of the extended mud pipe 16.

[0040] Specifically, the fine-tuning assembly 8 includes a fixed seat and a movable seat. The fixed seat is installed on the walking frame 11, and the connecting pipe 7 is installed on the movable seat. The movable seat is connected to the fixed seat through a telescopic cylinder. The relative position of the movable seat and the fixed seat can be adjusted by the extension and contraction of the telescopic cylinder, thereby adjusting the position of the connecting pipe 7 on the movable seat.

[0041] Furthermore, a pipe crane 2 is mounted on the pipe extension frame 1. This is a swing-arm mud pipe crane used for lifting and transporting mud pipes. The crane 2 can lift the extended mud pipe 16 between the tunnel mud pipe and the connecting pipe 7, connecting the ends of the extended mud pipe 16 to the tunnel mud pipe and the connecting pipe 7, respectively. A gate valve 10 is installed on the extended mud pipe 16. Once connected, the extended mud pipe 16 becomes a tunnel mud pipe. In other words, the tunnel mud pipe is composed of multiple extended mud pipes 16 connected end to end, each with a gate valve 10 at its end.

[0042] Furthermore, a dirt collection box 4 is provided on the pipeline extension frame 1, which is connected to the connecting pipe 7 via a slurry collection assembly 15; the dirt collection box 4 is located below the mud pipeline assembly 3. In this embodiment, the slurry collection assembly 15 is a mud pump; the connection point between the slurry collection assembly 15 and the connecting pipe 7 is located between the gate valve 10 on the tunnel mud pipe and the gate valve 10 on the connecting pipe 7. After the gate valve 10 is closed and before the tunnel mud pipe is disconnected from the connecting pipe 7, the slurry collection assembly 15 is used to pump out the mud between the two gate valves 10, that is, the mud in the connecting pipe 7 is pumped out and transported to the dirt collection box 4. This prevents mud from spilling when the tunnel mud pipe is disconnected from the connecting pipe 7, ensuring a clean and tidy construction site.

[0043] Example 3, based on Example 1, a mud pipe extension device, such as Figure 4 、 Figure 5 As shown, the pulling assembly 17 includes a movable drive member 18 and a roller structure 19. The roller structure 19 is mounted on a movable track on the tunnel sidewall. The tunnel slurry pipe is suspended on the roller structure 19. The movable drive member 18 is located within the tunnel and connected to the roller structure 19. In this embodiment, the movable drive member 18 is a cylinder or a pull rod. The movable drive member 18 pulls the roller structure 19 along the movable track on the tunnel sidewall, thereby moving the tunnel slurry pipe on the roller structure 19 within the tunnel, ensuring smooth slurry discharge during tunnel excavation.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. Mud pipe extension device, characterized in that: The invention comprises a pipeline extension frame (1) arranged outside a tunnel and a drag assembly (17) arranged inside the tunnel, wherein a mud pipeline assembly (3) is provided on the pipeline extension frame (1) and the drag assembly (17), and a pipeline extension assembly (5) for increasing the length of the mud pipeline assembly (3) is provided on the pipeline extension frame (1).

2. The mud pipe extension device according to claim 1, characterized in that: The pipeline extension component (5) includes a traveling frame (11) arranged on the pipeline extension frame (1) and a driving component for driving the traveling frame (11) to move. The mud pipeline assembly (3) includes a tunnel mud pipe and a connecting pipe (7). The tunnel mud pipe is arranged on the dragging component (17), and the connecting pipe (7) is arranged on the traveling frame (11). Gate valves (10) are respectively provided on the tail end of the tunnel mud pipe and the connecting pipe (7). The connecting pipe (7) is detachably connected to the tunnel mud pipe.

3. The mud pipe extension device according to claim 2, characterized in that: The mud pipeline assembly (3) further includes a mud hose (6), which is arranged on the pipeline extension frame (1), one end of the mud hose (6) is connected to the connecting pipe (7), and the other end of the mud hose (6) is connected to the external slurry discharge pipeline.

4. The mud pipe extension device according to claim 3, characterized in that: The mud hose (6) is arranged in a U shape on the pipeline extension frame (1).

5. The mud pipe extension device according to any one of claims 2 to 4, characterized in that: The driving assembly comprises a driving sprocket (13) and a driven sprocket (14), the driving sprocket (13) and the driven sprocket (14) being rotatably arranged at the front and rear ends of the pipeline extension frame (1), a chain being wound around the driving sprocket (13) and the driven sprocket (14), the chain being connected to the traveling frame (11), and a traveling driving member being provided on the pipeline extension frame (1) for driving the driving sprocket (13) to rotate.

6. The mud pipe extension device according to claim 5, characterized in that: A walking track (12) is provided on the pipeline extension frame (1), the walking frame (11) is connected to the walking track (12), and a limiting component for limiting the moving range of the walking frame (11) is provided on the walking track (12).

7. The mud pipe extension device according to any one of claims 2 to 4 and 6, characterized in that: A fine-tuning assembly (8) is provided on the walking frame (11), and the fine-tuning assembly (8) is connected to the connecting pipe (7).

8. The mud pipe extension device according to claim 7, characterized in that: A pipeline crane (2) is provided on the pipeline extension frame (1).

9. The mud pipe extension device according to any one of claims 2 to 4, 6 and 8, characterized in that: A dirt collecting box (4) is provided on the pipeline extension frame (1), and the dirt collecting box (4) is connected to the connecting pipe (7) through the pulp collecting assembly (15).

10. The mud pipe extension device according to claim 9, characterized in that: The dragging assembly (17) includes a movable driving member (18) and a roller structure (19), wherein the roller structure (19) is arranged on a movable track on the side wall of the tunnel, the tunnel slurry pipe is hoisted on the roller structure (19), the movable driving member (18) is arranged in the tunnel, and the movable driving member (18) is connected to the roller structure (19).

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