A rapid sealing device and method for a shield shell in a shield-jack-in process

Abstract

The application discloses a quick sealing device and method for a shield shell in a shield civil engineering underground butt joint process. A pushing mechanism can push a sealing plate clamped by a rotating clamping mechanism to pass through two corresponding perforated sections of shield machines in sequence, and make two ends of the sealing plate be located in two shield shells respectively, and then the two ends of the sealing plate are fixed with the two shield shells until the sealing plate is alternately connected to form a sealing cylinder. The application can simultaneously seal two shield shells in the cutting process of the outer periphery of the cutter head, effectively reduce the area of the suspended section between the two shield machines in the butt joint process, and avoid the phenomenon of soil collapse and leakage at the suspended section due to untimely sealing.

Description

Technical Field

[0001] This invention relates to a rapid sealing device and method for the shield shell during the underground docking process of a shield tunneling machine. Background Technology

[0002] With the rapid development of shield tunneling technology in my country, the earth-engineering type of underground docking construction technology for shield tunnels has been widely applied by engineers in the construction of ultra-long-distance tunnels. In this method, the first shield tunneling machine reaches the designated docking position and reinforces the surrounding soil. Then, the second shield tunneling machine adjusts its posture and moves towards the first machine until the distance between the cutterheads of the two machines is approximately zero. Next, the internal structures of both shield tunneling machines are dismantled, sequentially removing the trolley, equipment bridge, screw conveyor, segment assembly machine, hydraulic cylinders, cross beams, motors, personnel brakes, cutters, main drive, and cutterhead of each machine. After the internal structures of both shield tunneling machines are completely dismantled, a large annular suspended section is created between the two shield shells. Steel plates are then placed in this suspended section and welded to the two shield shells, thus completing the underground docking construction of the two shield tunneling machines. However, this docking method has many shortcomings. The most critical is that the complete disassembly of both cutterheads creates a large-area annular suspended section. Poor ground reinforcement or untimely steel plate sealing often leads to ground collapse and leakage, posing a significant construction risk at this stage. Therefore, based on the civil engineering-style underground docking method, a rapid sealing device and method for shield tunneling in civil engineering-style underground docking is proposed. This device can simultaneously seal the shield shells on both sides during the cutterhead disassembly process, thereby reducing the risk of collapse and leakage in the suspended section during the docking of the two tunnel boring machines and effectively addressing the defects of the civil engineering-style docking method. Summary of the Invention

[0003] This invention provides a rapid sealing device and method for the shield shell during the earth-rail type underground docking process, which overcomes the shortcomings of the earth-rail type underground docking method. One of the technical solutions adopted by this invention to solve its technical problem is:

[0004] A rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, the rapid sealing device comprising:

[0005] Several sealing plates;

[0006] The two tunnel boring machines were partially disassembled. Each tunnel boring machine includes a hollow shield shell and a cutterhead installed at the front end of the shield shell. Each shield shell is equipped with a sliding track, and each cutterhead is equipped with a main drive.

[0007] A rotating clamping mechanism is located inside one of the shield shells and slides in cooperation with a sliding track inside the shield shell. The rotating clamping mechanism can clamp the sealing plate and drive the sealing plate to rotate.

[0008] The propulsion mechanism is located within the same shield housing as the rotating clamping mechanism and slides in cooperation with the sliding track within the shield housing;

[0009] After cutting a through-hole section at the same position on the outer periphery of each cutterhead, the propulsion mechanism pushes the sealing plate held by the rotating clamping mechanism to pass through the corresponding through-hole sections of the two tunnel boring machines in sequence, so that the two ends of the sealing plate are respectively inside the two shield shells. Then, the two ends of the sealing plate are fixed to the two shield shells respectively. After cutting the next through-hole section, the next sealing plate is fixed to the two shield shells in the same way. The sealing plate is sealed to the previous sealing plate until the outer periphery of the cutterhead is cut. Several sealing plates form a sealing cylinder.

[0010] In a preferred embodiment, the shapes of the perforated sections on the outer periphery of the two cutter discs are adapted to the shape of the outer periphery of the cutter discs. The perforated sections can be cut in a clockwise or counterclockwise direction, and the latter perforated section is connected to the former perforated section.

[0011] In a preferred embodiment, the sealing plate is an outwardly convex plate or an inwardly concave plate. Both ends of the outwardly convex plate are provided with inwardly fastened portions, and both ends of the inwardly concave plate are provided with outwardly fastened portions. The outwardly convex plate and the inwardly concave plate are alternately connected in two adjacent perforated sections, and adjacent outwardly convex plates and inwardly concave plates are sealed together by the fastening cooperation of the inwardly fastened portions and the outwardly fastened portions.

[0012] In a preferred embodiment, the convex plate includes an arc-shaped convex plate body, with two inner fastening parts fixedly connected to the inner ends of the convex plate body, both of which are generally U-shaped, and the openings of the two inner fastening parts are arranged opposite to each other; the concave plate includes an arc-shaped concave plate body, with two outer fastening parts fixedly connected to the outer ends of the concave plate body, both of which are generally U-shaped, and the openings of the two outer fastening parts are arranged opposite to each other; when the convex plate and the concave plate are fastened together, the convex plate body is located outside the concave plate body, the inner fastening parts are engaged with the openings of the corresponding outer fastening parts, and the outer fastening parts are engaged with the openings of the corresponding inner fastening parts.

[0013] In a preferred embodiment, both ends of the convex plate and the concave plate are provided with through holes, both shield shells are provided with bolt holes, and several bolts are provided. The bolts pass through the through holes of the convex plate or the concave plate and are screwed into the bolt holes of the shield shell to fix the convex plate or the concave plate to the shield shell.

[0014] In a preferred embodiment, a pad is provided between the concave plate and the shield shell.

[0015] In a preferred embodiment, the rotary clamping mechanism includes a first sliding base, a first rotating platform, a first rotating disk, a first rotary drive motor, and a first clamping arm. The first sliding base is slidably engaged with a sliding track. The first rotating platform is fixedly mounted on the first sliding base. The first rotating disk is rotatably mounted on the first rotating platform. The first rotary drive motor drives the first rotating disk to rotate. The first clamping arm is connected to the first rotating disk and can clamp or release the sealing plate so that the sealing plate extends along the length of the shield. The first rotary drive motor drives the first rotating disk to rotate, and the first rotating disk drives the first clamping arm and the sealing plate to rotate synchronously.

[0016] In a preferred embodiment, the propulsion mechanism includes a second sliding chassis, a second rotating platform, a second rotating disk, a second rotary drive motor, a second clamping arm, and a hydraulic cylinder. The second sliding chassis is slidably engaged with a sliding track. The second rotating platform is fixedly mounted on the second sliding chassis. The second rotating disk is rotatably mounted on the second rotating platform. The second rotary drive motor drives the second rotating disk to rotate. The second clamping arm is connected to the second rotating disk and fixedly connected to the hydraulic cylinder. The hydraulic cylinder is equipped with a push piston. The second rotary drive motor drives the second rotating disk to rotate. The second rotating disk drives the second clamping arm and the hydraulic cylinder to rotate synchronously, so that the push piston and the corresponding sealing plate are at the same rotation angle, which facilitates the push piston to push the corresponding sealing plate to move towards another shield direction.

[0017] In a preferred embodiment, the rotary clamping mechanism further includes a first angle sensor for detecting the rotation angle of the first rotary disk; the propulsion mechanism further includes a second angle sensor for detecting the rotation angle of the second rotary disk, thereby ensuring that the rotation angle of the second rotary disk is the same as that of the first rotary disk.

[0018] The second technical solution adopted by this invention to solve its technical problem is:

[0019] A rapid sealing method for the shield shell during the underground docking process of a shield tunneling machine, comprising:

[0020] Step 10: Select the appropriate cutting arc and cutting thickness of the cutterhead outer periphery according to the geological conditions, and then cut the corresponding positions of the two cutterhead outer peripheries to form two corresponding perforation sections.

[0021] Step 20: Select the width and thickness of the convex or concave plate that match the cutting arc and thickness of the outer periphery of the cutter head, then install the convex or concave plate on the rotating clamping mechanism and extend it along the length of the shield shell. Start the rotating clamping mechanism to drive the convex or concave plate to rotate until the convex or concave plate corresponds to the two perforated sections in step 10.

[0022] Step 30: Start the propulsion mechanism to push the convex or concave plate held by the rotating clamping mechanism in step 20 through the corresponding perforation sections of the two tunnel boring machines in sequence, and make the two ends of the convex or concave plate respectively located in the two shield shells to reach the final position; and if the convex or concave plate is not the first piece pushed by the propulsion mechanism, the fastening state of the outer buckle and the inner buckle needs to be adjusted before pushing, and then the convex or concave plate is pushed forward. Finally, the two ends of the convex or concave plate are fixed to the two shield shells respectively.

[0023] Step 40: Repeat steps 10 to 30 until the outer convex plate and the inner concave plate interlock and form a sealed cylinder.

[0024] Compared with the prior art, this technical solution has the following advantages:

[0025] 1. This application simultaneously seals both sides of the shield shell during the cutting process on the outer periphery of the cutterhead, which can effectively reduce the area of ​​the suspended section between the two tunnel boring machines during the docking process and avoid soil collapse and leakage at the suspended section due to untimely sealing.

[0026] 2. This application uses an externally convex plate and an internally concave plate to pass through the perforation sections of two tunnel boring machines, and the externally convex plate and the internally concave plate are alternately interlocked to form a sealing cylinder. Thus, this method can tightly connect the two tunnel boring machines into a whole and has high strength.

[0027] 3. The curvature of the sealing plate and the curvature of the cutting area around the cutterhead can be determined according to the surrounding strata. When the strata are poor, the curvature of the sealing plate and the curvature of the cutting area around the cutterhead are smaller, and vice versa. Thus, this method can avoid strata collapse and leakage due to excessive suspended sections during construction. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 A schematic diagram of a rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine is shown in a preferred embodiment.

[0030] Figure 2 A schematic diagram of a preferred embodiment of a rotary clamping mechanism is shown.

[0031] Figure 3 A schematic diagram of the propulsion mechanism according to a preferred embodiment is shown.

[0032] Figure 4 A schematic diagram illustrating the positional relationship between the rotary clamping mechanism and the propulsion mechanism of a preferred embodiment is shown.

[0033] Figure 5 A schematic diagram illustrating the state of the rotating clamping mechanism and the propulsion mechanism within one of the shield shells according to a preferred embodiment is shown.

[0034] Figure 6 A schematic diagram showing the propulsion mechanism pushing the first convex plate is shown.

[0035] Figure 7 A schematic diagram showing the connection status between the sealing cylinder and the two shield shells is provided.

[0036] Figure 8 A schematic diagram is shown illustrating the state in which the outer convex plate and the inner concave plate form a sealed cylinder.

[0037] Figure 9 A schematic diagram showing the sequential relationship of the perforation sections on the outer periphery of the cutter head is provided.

[0038] Figure 10 A schematic diagram showing the connection state between the convex plate and the shield shell is drawn.

[0039] Figure 11 A schematic diagram showing the connection state between the concave plate and the shield shell is drawn. Detailed Implementation

[0040] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0041] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific scope of protection of this invention.

[0042] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly, that is, any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connections, detachable fixed connections, integral connections and fixed connections through other devices or elements.

[0043] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0044] Please refer to Figures 1 to 11 A preferred embodiment of a rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, the rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, includes several sealing plates, two shield tunneling machines for underground docking, a rotating clamping mechanism 40 and a propulsion mechanism 50.

[0045] After the two tunnel boring machines (TBMs) stop, their internal structures are disassembled. The trolley, equipment bridge, screw conveyor, segment assembler, hydraulic cylinders, motors, and personnel brakes of each TBM are disassembled sequentially, leaving the hollow shield shell, cutterhead, and main drive. Therefore, each TBM includes a hollow shield shell 10 and a cutterhead 13 mounted at the front end of the shield shell 10. Each shield shell 10 has a sliding rail 11, and each cutterhead 13 is equipped with a main drive 131, which rotates the cutterhead 13. Once the outer circumference 12 of the cutterhead has been completely cut, the cutterhead 13 can be disassembled as a whole.

[0046] In the actual cutting process, a through-hole section 14 is first cut at the same position on the outer periphery 12 of each cutter head, and then a sealing plate is pushed in and fixed until several through-hole sections 14 form a ring. At this time, several sealing plates also form a sealing cylinder 15.

[0047] In this embodiment, the shape of the perforated section 14 of the outer periphery 12 of the two cutter discs is adapted to the shape of the outer periphery 12 of the cutter disc, and is generally an arc segment. The cutting of the perforated section 14 can be carried out in a clockwise or counterclockwise direction, and the latter perforated section 14 is connected to the former perforated section 14.

[0048] The sealing plate is an outwardly convex plate 20 or an inwardly concave plate. Both ends of the outwardly convex plate 20 are provided with inwardly fastened portions 21, and both ends of the inwardly concave plate 30 are provided with outwardly fastened portions 31. The outwardly convex plate 20 and the inwardly concave plate 30 are alternately connected in two adjacent perforated sections 14. The adjacent outwardly convex plate 20 and the inwardly concave plate 30 are sealed together by the fastening cooperation of the inwardly fastened portions 21 and the outwardly fastened portions 31.

[0049] In this embodiment, as Figure 8As shown, the convex plate 20 includes an arc-shaped convex plate body 22, with two inner fastening parts 21 fixed to the inner ends of the convex plate body 22, and both inner fastening parts 21 are generally U-shaped, with their openings facing each other; the concave plate 30 includes an arc-shaped concave plate body 32, with two outer fastening parts 31 fixed to the outer ends of the concave plate body 32, and both outer fastening parts 31 are generally U-shaped, with their openings facing each other; when the convex plate 20 and the concave plate 30 are fastened together, the convex plate body 22 is located outside the concave plate body 32, the inner fastening part 21 is engaged with the opening of the corresponding outer fastening part 31, and the outer fastening part 31 is engaged with the opening of the corresponding inner fastening part 21.

[0050] In this embodiment, the convex plate 22 and the two inner buckles 21 are integrally formed, the concave plate 32 and the two outer buckles 31 are integrally formed, and both the convex plate 20 and the concave plate 30 are made of steel.

[0051] Preferably, both ends of the convex plate 22 and the concave plate 32 are pre-drilled with through holes 23 and 33. Whenever the convex plate 20 or the concave plate 30 reaches its final position, bolt holes 16 can be drilled at the two shield shells 10. Several bolts 17 are also provided, which pass through the through holes 23 and 33 of the convex plate 20 or the concave plate 30 and are screwed into the bolt holes 16 of the shield shell 10 to secure the convex plate 20 or the concave plate 30 to the shield shell 10. Figure 10 As shown, the gap between the protruding plate 22 and the inner wall of the shield 10 is small, and they can be directly locked together using bolts 17. Figure 8 As shown, since the concave plate 32 is located inside the convex plate 22, therefore, as Figure 11 As shown, a padding layer 34 is provided between the concave plate 32 and the shield shell 10 to strengthen the connection between the two.

[0052] The rotating clamping mechanism 40 is located inside one of the shield shells 10 and is slidably engaged with the sliding track 11 inside the shield shell 10. The rotating clamping mechanism can clamp the outer convex plate 20 or the inner concave plate 30 and drive the outer convex plate 20 or the inner concave plate 30 to rotate.

[0053] In this embodiment, the rotating clamping mechanism 40 includes a first sliding base 41, a first rotating platform 42, a first rotating disk 43, a first rotating drive motor, and a first clamping arm 44. The first sliding base 41 is slidably engaged with the sliding track 11. The first rotating platform 42 is fixedly mounted on the first sliding base 41. The first rotating disk 43 is rotatably mounted on the first rotating platform 42. The first rotating drive motor drives the first rotating disk 43 to rotate. The first clamping arm 44 is connected to the first rotating disk 43. The first clamping arm 44 can clamp or release the outer convex plate 20 or the inner concave plate 30 so that the outer convex plate 20 or the inner concave plate 30 extends along the length direction of the shield shell 10. The first rotating drive motor drives the first rotating disk 43 to rotate, and the first rotating disk 43 drives the first clamping arm 44 and the outer convex plate 20 or the inner concave plate 30 to rotate synchronously.

[0054] like Figure 2 As shown, the bottom end of the first sliding base 41 is provided with a plurality of first pulleys 411, which slide in cooperation with the sliding track 11. The bottom end of the first rotating platform 42 is provided with two spaced-apart first support columns 421, the bottom ends of which are fixedly connected to the first sliding base 41. The length extension direction of the first clamping arm 44 is perpendicular to the central axis of the first rotating platform 42. The head end of the first clamping arm 44 is connected to the first rotating disk 43, and the end of the first clamping arm 44 is provided with a gripper 441, which can circumferentially clamp or release the outer convex plate 20 or the inner concave plate 30.

[0055] In this embodiment, the rotating clamping mechanism 40 further includes a first angle sensor, which detects the rotation angle of the first rotating disk 43.

[0056] The propulsion mechanism 50 is located within the same shield shell 10 as the rotating clamping mechanism 40 and is slidably engaged with the sliding track 11 within the shield shell 10. The propulsion mechanism 50 can push the convex plate 20 or concave plate 30 held by the rotating clamping mechanism 40 through the corresponding perforation sections 14 of the two tunnel boring machines in sequence, and extend the convex plate 20 or concave plate 30 into another shield shell 10. Then, the convex plate 20 or concave plate 30 is fixedly connected to the two shield shells 10 until the convex plate 20 and concave plate 30 are alternately connected to form a sealing cylinder 15.

[0057] In this embodiment, the propulsion mechanism 50 includes a second sliding chassis 51, a second rotating platform 52, a second rotating disk 53, a second rotary drive motor, a second clamping arm 54, and a hydraulic cylinder 55. The second sliding chassis 51 is slidably engaged with the sliding track 11. The second rotating platform 52 is fixedly mounted on the second sliding chassis 51. The second rotating disk 53 is rotatably mounted on the second rotating platform 52. The second rotary drive motor drives the second rotating disk 53 to rotate. The second clamping arm 54 is connected to the second rotating disk 53 and fixedly connected to the hydraulic cylinder 55. The hydraulic cylinder 55 is provided with a push piston 551. The second rotary drive motor drives the second rotating disk 53 to rotate. The second rotating disk 53 drives the second clamping arm 54 and the hydraulic cylinder 55 to rotate synchronously, so that the push piston 551 and the corresponding convex plate 20 or concave plate 30 are at the same rotation angle, which facilitates the push piston 551 to push the corresponding convex plate 20 or concave plate 30 to move towards another shield 10.

[0058] The propulsion mechanism 50 also includes a second angle sensor, which detects the rotation angle of the second rotating disk 53 and ensures that the rotation angle of the second rotating disk 53 is the same as that of the first rotating disk 43.

[0059] like Figure 3 As shown, the second sliding base 51 has several second pulleys 511 at its bottom end, which slide in cooperation with the sliding track 11. The second rotating platform 52 has two spaced-apart second support columns 521 at its bottom end, with the bottom ends of the two support columns 521 fixed to the top of the second sliding base 51. The length extension direction of the second clamping arm 54 is perpendicular to the central axis of the second rotating platform 52. That is, the connection structure of the second sliding base 51, the second rotating platform 52, the second rotating disk 53, and the second clamping arm 54 is the same as the connection structure of the first sliding base 41, the first rotating platform 42, the first rotating disk 43, and the first clamping arm 44 in the rotating clamping mechanism 40. Furthermore, the direction of movement of the pushing piston 551 is parallel to the central axis of the second rotating disk 53.

[0060] like Figure 5 As shown, the propulsion mechanism 50 is located on the side of the rotary clamping mechanism 40 away from the cutter head. Figure 4 As shown, the sealing device also includes a hydraulic power pump station 60 and a control box 61. The hydraulic power pump station 60 is located on the side of the propulsion mechanism 50 away from the cutter head, and is connected to the hydraulic cylinder 55. The control box 61 is also located on the side of the propulsion mechanism 50 away from the cutter head, and is connected to the hydraulic power pump station 60, the rotary clamping mechanism 40, and the propulsion mechanism 50.

[0061] A rapid sealing method for the shield shell during the underground docking process of a shield tunneling machine, comprising:

[0062] Step 10: Select a suitable cutting arc and thickness on the outer periphery of the cutterhead according to the geological conditions, and then cut the corresponding positions on the outer periphery 12 of the two cutterheads to form two corresponding perforated sections 14. Before cutting the perforated sections 14, the rotating clamping mechanism 40 and the propulsion mechanism 50 can be moved to suitable positions within one of the shield shells 10. Specifically, the rotating clamping mechanism 40 and the propulsion mechanism 50 can be moved by the cooperation of the first sliding base 41 with the sliding rail 11 and the second sliding base 51 with the sliding rail 11, respectively. Furthermore, the cutting sequence of the perforated sections 14 can be determined according to... Figure 9 Following the counter-clockwise order, first cut the perforated section 14 on the bottom right. After the outer convex plate 20 or inner concave plate 30 at this location is fixed to the shield shell 10, then cut the second perforated section 14 in the counter-clockwise direction, and so on. The cutting order of the perforated sections 14 is not limited to this; clockwise cutting is also possible.

[0063] Step 20: Select the width and thickness of the convex plate 20 or concave plate 30 that matches the cutting arc and thickness of the outer periphery of the cutter head. Then, install the convex plate 20 or concave plate 30 on the rotary clamping mechanism 40 and extend it along the length of the shield shell 10. Start the rotary clamping mechanism 40 to drive the convex plate 20 or concave plate 30 to rotate until the convex plate 20 or concave plate 30 corresponds to the two perforated sections 14 in step 10. Specifically: control the first rotary drive motor to drive the first rotary disk 43 to rotate by the preset angle value of the first angle sensor, and then drive the first clamping arm 44 to rotate synchronously until the convex plate 20 or concave plate 30 is located at the preset angle value position.

[0064] Step 30: Start the propulsion mechanism to push the convex plate 20 or concave plate 30 held by the rotating clamping mechanism in step 20 through the corresponding perforation sections 14 of the two tunnel boring machines in sequence, and make the two ends of the convex plate 20 or concave plate 30 respectively located in the two shield shells 10 to reach the final position; and if the convex plate 20 or concave plate 30 is not the first piece pushed by the propulsion mechanism 50, the buckling state of the outer buckle 21 and the inner buckle 31 needs to be adjusted before pushing, and then the convex plate 20 or concave plate 30 is pushed forward. Finally, the two ends of the convex plate 20 or concave plate 30 are fixed to the two shield shells 10 respectively; Specifically: first, control the second rotary drive motor to drive the second rotary disk 53 to rotate through the preset angle value of the second angle sensor, and then drive the second clamping arm 54 and the hydraulic cylinder 55 to rotate synchronously until the push piston 551 of the hydraulic cylinder 55 is located at the position of the preset angle value of the second angle sensor. If the protruding convex plate 20 or concave plate 30 is not the first plate, it should be fastened to the already constructed convex plate 20 or concave plate 30. Next, the hydraulic cylinder 55 is activated, driving the push piston 551 to push the convex plate 20 or concave plate 30 towards the perforated section 14. When the end of the convex plate 20 or concave plate 30 extends into another shield shell 10, the convex plate 20 or concave plate 30 reaches its final position.

[0065] In this embodiment, in step 30, through holes 23 and 33 can be pre-set at both ends of the convex plate 20 and the concave plate 30. After the convex plate 20 or the concave plate 30 is pushed to its final position, holes 23 and 33 at both ends of the convex plate 20 or the concave plate 30 are aligned, and bolt holes 16 are drilled in the inner walls of the two shield shells 10 respectively. Then, bolts 17 are passed through the through holes 23 and 33 and screwed into the bolt holes 16 to fix both ends of the convex plate 20 or the concave plate 30 to the two shield shells 10 respectively. If it is the convex plate 20, then as follows: Figure 10 As shown, the bolt 17 can be fixed simply by passing it through the through hole 23 and screwing it into the bolt hole 16; if it is the concave plate 30, since there is a large gap between the concave plate body 32 and the inner wall of the shield shell 10, a pad 34 needs to be placed between the two, and then the bolt 17 can be fixed by passing it through the through hole 33 and screwing it into the bolt hole 16.

[0066] like Figure 6 As shown, this is the state after the first convex plate 20 is installed.

[0067] Step 40: Repeat steps 10 to 30 until the outer convex plate 20 and the inner concave plate 30 interlock and form a sealing cylinder 15. Figure 7 The image shows the state after the sealing cylinder 15 has been installed.

[0068] Therefore, during the cutting process of the outer periphery of the cutterhead, the two shield shells 10 are sealed and connected at the same time, thereby reducing the risk of collapse and leakage of the suspended section during the docking process of the two tunnel boring machines, and effectively solving the defects of the civil engineering docking method.

[0069] The above description is merely a preferred embodiment of the present invention, and therefore should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent and the contents of the specification should still fall within the scope of the present invention.

Claims

1. A rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, characterized in that: The rapid sealing device includes: Several sealing plates; The two tunnel boring machines were partially disassembled. Each tunnel boring machine includes a hollow shield shell and a cutterhead installed at the front end of the shield shell. Each shield shell is equipped with a sliding track, and each cutterhead is equipped with a main drive. A rotating clamping mechanism is located inside one of the shield shells and slides in cooperation with a sliding track inside the shield shell. The rotating clamping mechanism can clamp the sealing plate and drive the sealing plate to rotate. The propulsion mechanism is located within the same shield housing as the rotating clamping mechanism and slides in cooperation with the sliding track within the shield housing; After cutting a through-hole section at the same position on the outer periphery of each cutterhead, the propulsion mechanism pushes the sealing plate held by the rotating clamping mechanism to pass through the corresponding through-hole sections of the two tunnel boring machines in sequence, so that the two ends of the sealing plate are in the two shield shells respectively, and then the two ends of the sealing plate are fixed to the two shield shells respectively. After cutting the next through-hole section, the next sealing plate is fixed to the two shield shells in the same way, and the sealing plate is sealed to the previous sealing plate until the outer periphery of the cutterhead is cut, and several sealing plates form a sealing cylinder. The shape of the perforated sections on the outer periphery of the two cutter heads is adapted to the shape of the outer periphery of the cutter head. The perforated sections are cut in a clockwise or counterclockwise direction, and the latter perforated section is connected to the former perforated section. The sealing plate is an outwardly convex plate or an inwardly concave plate. Both ends of the outwardly convex plate are provided with inwardly fastened portions, and both ends of the inwardly concave plate are provided with outwardly fastened portions. The outwardly convex plate and the inwardly concave plate are alternately connected in two adjacent perforated sections. The adjacent outwardly convex plate and the inwardly concave plate are sealed together by the fastening cooperation of the inwardly fastened portions and the outwardly fastened portions.

2. The rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, as described in claim 1, is characterized in that: The convex plate includes an arc-shaped convex plate body, with two inner fastening parts fixed to the inner ends of the convex plate body, both of which are generally U-shaped, and the openings of the two inner fastening parts are arranged opposite to each other; the concave plate includes an arc-shaped concave plate body, with two outer fastening parts fixed to the outer ends of the concave plate body, both of which are generally U-shaped, and the openings of the two outer fastening parts are arranged opposite to each other; when the convex plate and the concave plate are fastened together, the convex plate body is located outside the concave plate body, the inner fastening parts are engaged with the openings of the corresponding outer fastening parts, and the outer fastening parts are engaged with the openings of the corresponding inner fastening parts.

3. The rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, as described in claim 2, is characterized in that: Both ends of the convex plate and the concave plate are pre-drilled with through holes. Both shield shells are provided with bolt holes and several bolts. The bolts pass through the through holes of the convex plate or the concave plate and are screwed into the bolt holes of the shield shell to fix the convex plate or the concave plate to the shield shell.

4. A rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, as described in claim 2, is characterized in that: A padding layer is provided between the concave plate and the shield shell.

5. A rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, as described in any one of claims 1 to 4, characterized in that: The rotating clamping mechanism includes a first sliding base, a first rotating platform, a first rotating disk, a first rotating drive motor, and a first clamping arm. The first sliding base is slidably engaged with a sliding track. The first rotating platform is fixedly mounted on the first sliding base. The first rotating disk is rotatably mounted on the first rotating platform. The first rotating drive motor drives the first rotating disk to rotate. The first clamping arm is connected to the first rotating disk. The first clamping arm can clamp or release the sealing plate so that the sealing plate extends along the length of the shield. The first rotating drive motor drives the first rotating disk to rotate, and the first rotating disk drives the first clamping arm and the sealing plate to rotate synchronously.

6. A rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, as described in claim 5, is characterized in that: The propulsion mechanism includes a second sliding chassis, a second rotating platform, a second rotating disk, a second rotary drive motor, a second clamping arm, and a hydraulic cylinder. The second sliding chassis is slidably engaged with a sliding track. The second rotating platform is fixedly mounted on the second sliding chassis. The second rotating disk is rotatably mounted on the second rotating platform. The second rotary drive motor drives the second rotating disk to rotate. The second clamping arm is connected to the second rotating disk and fixedly connected to the hydraulic cylinder. The hydraulic cylinder is equipped with a push piston. The second rotary drive motor drives the second rotating disk to rotate. The second rotating disk drives the second clamping arm and the hydraulic cylinder to rotate synchronously, so that the push piston and the corresponding sealing plate are at the same rotation angle, which facilitates the push piston to push the corresponding sealing plate to move towards another shield direction.

7. A rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine, as described in claim 6, is characterized in that: The rotating clamping mechanism further includes a first angle sensor to detect the rotation angle of the first rotating disk; the pushing mechanism further includes a second angle sensor to detect the rotation angle of the second rotating disk, which can ensure that the rotation angle of the second rotating disk is the same as the rotation angle of the first rotating disk.

8. A method for rapid sealing of the shield shell during the underground docking process of a shield tunneling machine, comprising using the rapid sealing device for the shield shell during the underground docking process of a shield tunneling machine as described in any one of claims 1 to 7, characterized in that: include: Step 10: Select the appropriate cutting arc and cutting thickness of the cutterhead outer periphery according to the geological conditions, and then cut the corresponding positions of the two cutterhead outer peripheries to form two corresponding perforation sections. Step 20: Select the width and thickness of the convex or concave plate that match the cutting arc and thickness of the outer periphery of the cutter head, then install the convex or concave plate on the rotating clamping mechanism and extend it along the length of the shield shell. Start the rotating clamping mechanism to drive the convex or concave plate to rotate until the convex or concave plate corresponds to the two perforated sections in step 10. Step 30: Start the propulsion mechanism to push the convex or concave plate held by the rotating clamping mechanism in step 20 through the corresponding perforation sections of the two tunnel boring machines in sequence, and make the two ends of the convex or concave plate respectively located in the two shield shells to reach the final position; and if the convex or concave plate is not the first piece pushed by the propulsion mechanism, the fastening state of the outer buckle and the inner buckle needs to be adjusted before pushing, and then the convex or concave plate is pushed forward. Finally, the two ends of the convex or concave plate are fixed to the two shield shells respectively. Step 40: Repeat steps 10 to 30 until the outer convex plate and the inner concave plate interlock and form a sealed cylinder.

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