A device for breaking a local pipe section of a trenchless large-diameter pipeline

Abstract

The application discloses a non-excavation large-diameter pipeline local pipe piece breaking device, which comprises a dismounting vehicle, a rotary telescopic arm is rotationally connected to the upper side of the dismounting vehicle, two arc-shaped guide rails are fixedly connected to one side of the dismounting vehicle, sliding blocks are slidably connected to the arc-shaped guide rails, a cross beam is fixedly connected between the two sliding blocks, a first hydraulic rod is fixedly connected to the cross beam, a vacuum chuck is fixedly connected to the telescopic end of the first hydraulic rod, a power box is fixedly connected to the upper end of the rotary telescopic arm, at least one arc-shaped rod is arranged on one side of the cross beam, and the arc-shaped rod is tractionally connected with the power box. The arc-shaped rod is used for tractionally rotating the cross beam along the circumference of a tunnel, the adjacent pipe piece is moved upwards and the wedge-shaped shield piece is pushed to displace, the pipe piece of the side wall of the tunnel is separated from the adjacent pipe piece, a gap is formed between the pipe piece of the side wall of the tunnel and the adjacent pipe piece, the adjacent pipe piece and the wedge-shaped shield piece are still supported on the top wall of the tunnel, the workload of grouting and reinforcing the outer wall of the tunnel is reduced, and the dismounting speed of the pipe piece is improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel segment dismantling technology, and in particular to a device for the partial segment breaking of large-diameter pipelines without excavation. Background Technology

[0002] Shield tunneling is the primary method for constructing subway and underground structural engineering projects. Subway tunnels typically include connecting passages that serve functions such as connectivity, drainage, maintenance, and fire rescue. These connecting passages are excavated using methods such as manual excavation combined with traditional ground reinforcement, mining methods, or newer ground freezing reinforcement methods. However, regardless of the method used, the excavation of connecting passages requires the removal of some existing shield tunneling segments. Current technology uses interlocking segments with a wide outer surface and a narrow inner surface, making it impossible to directly remove individual segments from the tunnel center. Furthermore, the removal of segments in large-diameter tunnels can easily lead to tunnel structural instability and collapse. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a trenchless large-diameter pipeline segment breaking device, thereby solving the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A trenchless large-diameter pipeline segment breaking device includes a dismantling vehicle, a rotating telescopic arm rotatably connected to the upper side of the dismantling vehicle, two arc-shaped guide rails fixedly connected to one side of the dismantling vehicle, sliders slidably connected on the arc-shaped guide rails, a crossbeam fixedly connected between the two sliders, a first hydraulic rod fixedly connected to the crossbeam, a vacuum suction cup fixedly connected to the telescopic end of the first hydraulic rod, a power box fixedly connected to the upper end of the rotating telescopic arm, and at least one arc-shaped rod provided on one side of the crossbeam, the arc-shaped rod being traction-connected to the power box.

[0006] Preferably, the lower end of the arc-shaped rod is fixedly connected to a round rod, the end of the round rod is provided with a boss, a buffer spring is fixedly connected between the boss and the crossbeam, the crossbeam is provided with a clearance hole, and the round rod passes through the clearance hole.

[0007] Preferably, the diameter of the clearance hole is larger than the diameter of the round rod.

[0008] Preferably, the upper side of the power box is rotatably connected to a swing guide rail, the top side of the power box is fixedly connected to a drive motor, the main shaft of the drive motor is fixedly connected to the swing guide rail, the upper side of the swing guide rail is slidably connected to a slide plate, the slide plate is provided with a fixing rod, the upper side of the power box is slidably connected to a sliding block, and the upper side of the power box is provided with a vibration hammer device. The vibration hammer device hammers the sliding block to move, and the movement of the sliding block pushes the slide plate to slide.

[0009] Preferably, the sliding block is rotatably connected to the support rod, the end of the support rod is fixedly connected to the buffer plate, and the buffer plate is provided with a rubber pad layer.

[0010] Preferably, a power unit is installed at one end of the arc-shaped rod that extends into the power box.

[0011] Preferably, a displacement sensor is fixedly connected to one side of the arc-shaped rod.

[0012] The advantages of this invention are as follows: The trenchless large-diameter pipeline partial segment removal device provided by this invention removes a portion of the large end of the wedge-shaped shield segment on the tunnel roof by cutting it out, allowing the remaining wedge-shaped shield segment to move. The adjacent pipe segments of the wedge-shaped shield segment are set with inclined surfaces, and the vacuum suction cup of the crossbeam adsorbs the adjacent pipe segments. The power box pulls the crossbeam to rotate along the circumference of the tunnel through the arc rod. The adjacent pipe segments move upward and push the wedge-shaped shield segment to move. Due to the removal of the adjacent pipe segments above, gaps appear in the tunnel sidewall segments, which can then be moved directly to the center of the tunnel and removed individually. This makes the tunnel sidewall segments easy to disassemble, and the adjacent pipe segments and wedge-shaped shield segments are still supported on the tunnel roof, reducing the workload of grouting and reinforcing the outer wall of the tunnel and increasing the disassembly speed of the segments.

[0013] This invention uses a vibratory hammer to strike a sliding block. The sliding block moves and pushes a sliding plate to slide. The sliding plate supports the wedge-shaped shield segment as it moves along the tunnel roof, thus maintaining support for the tunnel roof. Because the swing guide rail rotates to be parallel to one side of the inclined plane, after the wedge-shaped shield segment slides along that side of the inclined plane, a gap can appear on the other side, allowing the adjacent pipe segment to rise. After the adjacent pipe segment rises, it is convenient to disassemble the tunnel sidewall segments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the basic structure of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of the power box;

[0016] Figure 3 yes Figure 2 Another perspective attempt;

[0017] Figure 4 This is a schematic diagram of the state of the present invention used inside a shield tunnel;

[0018] Figure 5 This is a schematic diagram of the shield tunnel segment movement state of the present invention;

[0019] Figure 6 This is a schematic diagram showing the formation of a crack between the adjacent pipe section and the inner wall of the tunnel according to the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Example 1

[0021] like Figures 1 to 6 As shown, the present invention provides a non-excavation large-diameter pipeline partial segment breaking device, including a dismantling vehicle 1, which is towed into the tunnel by a tractor. The dismantling vehicle 1 is a vehicle with a liftable base. A rotating telescopic arm 11 is rotatably connected to the upper side of the dismantling vehicle 1. The rotation power and hydraulic power of the rotating telescopic arm 11 are both based on existing technology. Two arc-shaped guide rails 12 are fixedly connected to one side of the dismantling vehicle 1. Sliding blocks 13 are slidably connected to the arc-shaped guide rails 12. A crossbeam 14 is fixedly connected between the two sliding blocks 13. A first hydraulic rod 15 is fixedly connected to the crossbeam 14. A vacuum suction cup 16 is fixedly connected to the telescopic end of the first hydraulic rod 15. The structure and operating principle of the vacuum suction cup 16 are commonly used in tunnel segment laying machines and will not be described in detail here. A power box 2 is fixedly connected to the upper end of the rotating telescopic arm 11. At least one arc-shaped rod 3 is set on one side of the crossbeam 14. In order to balance the traction force, multiple sets of arc-shaped rods 3 are set. For the sake of simplicity, the present invention only sets one arc-shaped rod 3. The arc-shaped rod 3 is connected to the power box 2 for traction.

[0022] During construction, the large end of the wedge-shaped shield segment 10 on the tunnel roof is cut off and removed, allowing the remaining wedge-shaped shield segment 10 to move. The adjacent pipe segments 20 of the wedge-shaped shield segment 10 are set with inclined surfaces, and the vacuum suction cup 16 of the crossbeam 14 adsorbs the adjacent pipe segments 20. The power box 2 pulls the crossbeam 14 to rotate along the circumference of the tunnel through the arc rod 3. The adjacent pipe segments 20 move upward and push the wedge-shaped shield segment 10 to move. Due to the removal of the upper adjacent pipe segments 20, the tunnel side wall segments 30 have gaps, and the tunnel side wall segments 30 can be moved directly to the center of the tunnel and removed individually, making the tunnel side wall segments 30 easy to disassemble. The adjacent pipe segments 20 and the wedge-shaped shield segment 10 are still supported on the tunnel roof, reducing the workload of grouting and reinforcing the outer wall of the tunnel and increasing the disassembly speed. Example 2

[0023] like Figures 1 to 6 As shown, the lower end of the arc-shaped rod 3 is fixedly connected to a round rod 31. A boss is provided at the end of the round rod 31. A buffer spring 32 is fixedly connected between the boss and the crossbeam 14. The crossbeam 14 is provided with a clearance hole through which the round rod 31 passes. The diameter of the clearance hole is larger than the diameter of the round rod 31, so that the arc-shaped rod 3 can have floating space relative to the adjacent pipe segment 20. For example, it can overcome the influence of traction angle deviation. For example, if the connection between the adjacent pipe segment 20 and the tunnel inner wall is too firm through shield grouting, the telescopic arm 11 can be rotated to lower the rod by 2-5mm (e.g., Figure 6As shown), the upper end of the adjacent pipe segment 20 is pulled apart from the tunnel inner wall by the crack 201 and then reset. After the adjacent pipe segment 20 is loosened, it is easy to move. The displacement sensor 311 is fixedly connected to one side of the arc rod 3.

[0024] The displacement sensor 311 is a laser rangefinder or a mechanical sensor. A displacement control range is set between the displacement sensor 311 and the crossbeam 14, that is, the arc rod 3 can move a certain distance relative to the crossbeam 14. When the movement exceeds this distance, it indicates that the adjacent pipe segment 20 is difficult to move. At this time, it is necessary to adjust the disassembly strategy, such as adding a lifting arm, jacks, etc. to assist in lifting the adjacent pipe segment 20. Example 3

[0025] like Figures 1 to 6 As shown, the upper side of the power box 2 is rotatably connected to the swing guide rail 4, and the top side of the power box 2 is fixedly connected to the drive motor 41. The main shaft of the drive motor 41 is fixedly connected to the swing guide rail 4. The swing guide rail 4 rotates to be parallel to the inclined plane 40 on one side, so that after the wedge-shaped shield plate 10 slides against the inclined plane 40 on that side, a gap 50 can appear on the other side. The upper side of the swing guide rail 4 is slidably connected to the slide plate 42. The slide plate 42 is equipped with a fixing rod 43. A hole is drilled in the wedge-shaped shield plate 10, and the fixing rod 43 is inserted into the hole and fastened to the wedge-shaped shield plate 10 by existing technology. The upper side of the power box 2 is slidably connected to the sliding block 44, and the upper side of the power box 2 is equipped with a vibration hammer device 45. The vibration hammer device 45 is a conventional structure. The vibration hammer device 45 hammers the sliding block 44 to move, and the movement of the sliding block 44 pushes the slide plate 42 to slide. The movement of the slide plate 42 supports the movement of the wedge-shaped shield plate 10 on the tunnel roof, and as shown... Figure 5 As shown, after the cut wedge-shaped shield segment 10 moves along the inclined plane 40 on one side, a gap 50 appears on the other side of the wedge-shaped shield segment 10, which allows the adjacent pipe segment 20 to rise. After the adjacent pipe segment 20 rises, it is convenient to disassemble the tunnel sidewall segment 30.

[0026] The sliding block 44 is rotatably connected to the support rod 441, and the end of the support rod 441 is fixedly connected to the buffer plate 442. The buffer plate 442 adapts to the angle change of the swing guide rail 4, and the buffer plate 442 is provided with a rubber pad layer.

[0027] A power device 5 is installed at one end of the arc-shaped rod 3 that extends into the power box 2. The power device 5 is controlled to start and stop using existing technology. Based on embodiment 1, after the mortar at the interface between the adjacent pipe segment 20 and the tunnel inner wall cracks, the power device 5 drives the arc-shaped rod 3 to vibrate and gradually pull it upward, so that the bonding force between the adjacent pipe segment 20 and the tunnel inner wall gradually disappears. The adjacent pipe segment 20 can then easily slide upward along the tunnel inner wall, maintaining the support of the tunnel top wall and freeing up space for the removal of the tunnel side wall segments 30, thereby improving the dismantling efficiency and preventing the tunnel structure from becoming unstable.

[0028] The vibratory hammer device 45 hammers the sliding block 44, which moves and pushes the sliding plate 42 to slide. The sliding plate 42 moves and supports the wedge-shaped shield 10 to move on the tunnel roof, maintaining support for the tunnel roof. As the swing guide rail 4 rotates to be parallel to the inclined plane 40 on one side, after the wedge-shaped shield 10 slides along the inclined plane 40 on that side, a gap 50 can appear on the other side, allowing the adjacent pipe segment 20 to have room to rise. After the adjacent pipe segment 20 rises, it is convenient to dismantle the tunnel side wall segment 30. After the tunnel side wall segment 30 is easily dismantled, the connecting passage can be excavated through the window of the dismantled tunnel side wall segment 30.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A non-excavation large-diameter pipeline partial segment breaking device, comprising a dismantling vehicle (1), wherein a rotating telescopic arm (11) is rotatably connected to the upper side of the dismantling vehicle (1), two arc-shaped guide rails (12) are fixedly connected to one side of the dismantling vehicle (1), sliders (13) are slidably connected to the arc-shaped guide rails (12), a crossbeam (14) is fixedly connected between the two sliders (13), a first hydraulic rod (15) is fixedly connected to the crossbeam (14), and a vacuum suction cup (16) is fixedly connected to the telescopic end of the first hydraulic rod (15), characterized in that: The upper end of the rotating telescopic arm (11) is fixedly connected to the power box (2), and at least one arc rod (3) is provided on one side of the crossbeam (14), and the arc rod (3) is traction connected to the power box (2); The upper side of the power box (2) is rotatably connected to the swing guide rail (4), and the top side of the power box (2) is fixedly connected to the drive motor (41). The main shaft of the drive motor (41) is fixedly connected to the swing guide rail (4). The upper side of the swing guide rail (4) is slidably connected to the slide plate (42). The slide plate (42) is provided with a fixing rod (43). The upper side of the power box (2) is slidably connected to the sliding block (44). The upper side of the power box (2) is provided with a vibration hammering device (45). The vibration hammering device (45) hammers the sliding block (44) to move, and the sliding block (44) moves to push the slide plate (42) to slide.

2. The trenchless large-diameter pipeline partial segment breaking device according to claim 1, characterized in that: The lower end of the arc-shaped rod (3) is fixedly connected to a round rod (31), and a boss is provided at the end of the round rod (31). A buffer spring (32) is fixedly connected between the boss and the crossbeam (14). The crossbeam (14) is provided with a clearance hole, and the round rod (31) passes through the clearance hole.

3. The trenchless large-diameter pipeline partial segment breaking device according to claim 2, characterized in that: The diameter of the clearance hole is larger than the diameter of the round rod (31).

4. The trenchless large-diameter pipeline partial segment breaking device according to claim 1, characterized in that: The sliding block (44) is rotatably connected to the support rod (441), and the end of the support rod (441) is fixedly connected to the buffer plate (442), and the buffer plate (442) is provided with a rubber pad layer.

5. The trenchless large-diameter pipeline partial segment breaking device according to claim 1, characterized in that: The arc-shaped rod (3) has a power device (5) installed at one end that extends into the power box (2).

6. The trenchless large-diameter pipeline partial segment breaking device according to claim 5, characterized in that: A displacement sensor (311) is fixedly connected to one side of the arc-shaped rod (3).

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