Tunnel synchronous disassembly and assembly shield main machine and shield tunneling machine

Abstract

The utility model relates to the technical field of tunnel construction equipment, in particular to a tunnel synchronous disassembly and assembly shield main machine and a shield tunneling machine. The tunnel synchronous disassembly and assembly shield main machine comprises a shield part, an excavation part, a driving part and a disassembly and assembly part; the excavation part, the driving part and the disassembly and assembly part are sequentially and coaxially arranged in the mounting cavity in the length direction of the shield part; the excavation part is connected with an output shaft of the driving part; the disassembling and assembling part comprises a bracket, a disassembling mechanism and an assembling mechanism, and the bracket is connected with the shield part; the dismounting mechanism is connected with the shield part, and the dismounting mechanism is used for grabbing and dismounting the first tunnel segment; the assembling mechanism is slidably arranged on the bracket in the length direction of the shield part and used for grabbing and installing a second tunnel segment. The dismounting mechanism and the splicing mechanism are adopted to synchronously dismount the first tunnel segment and mount the second tunnel segment, so that the construction efficiency of expanding excavation of the tunnel is effectively improved, and cooperative dismounting and splicing of new and old tunnel segments are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction equipment, in particular to a tunnel synchronous disassembly and assembly shield main machine and a shield machine. Background Technique

[0002] In recent years, with the acceleration of the urbanization construction process and the continuous increase in the development intensity of underground space, shield tunnel projects such as municipal pipeline tunnels, rail transit tunnels, and other types have developed rapidly. As is well known, the design of shield tunnels is restricted by a series of factors such as the environment, technology, and equipment at that time. It is difficult for the built tunnel specifications and functions to meet the current development needs. Moreover, shield segments have a certain design service life. From the perspective of the existing shield tunnels in operation, situations such as excessive structural deformation, damage and cracking, water seepage and leakage, etc. have seriously threatened the service life of the shield tunnels. It can be predicted that it will be an inevitable fact to expand and reconstruct the existing shield tunnels that have been in operation. However, if a cast-in-place lining is directly constructed in the existing shield tunnel, from a design perspective, it simply cannot meet the requirements of the use limit. If the existing shield tunnel is directly abandoned, the future instability of the existing shield tunnel will directly affect its surface, surrounding structures, etc., and the underground space resources do not allow it either. Therefore, how to demolish and reconstruct the existing shield tunnels that are close to being scrapped and do not meet the current functions, that is, to demolish the existing shield tunnel and then reassemble a new shield tunnel at the same time, is an effective solution to the above problems.

[0003] Therefore, it is necessary to provide a new tunnel synchronous disassembly and assembly shield main machine and a shield machine to solve the above technical problems. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a tunnel synchronous disassembly and assembly shield main machine and a shield machine, aiming to solve the problems of low construction efficiency of the existing equipment for expanding and excavating tunnels and difficulty in coordinating the disassembly and assembly of old and new tunnel segments.

[0005] To achieve the above purpose, a tunnel synchronous disassembly and assembly shield main machine proposed by the utility model is used to reconstruct the existing first tunnel to obtain a second tunnel. The tunnel synchronous disassembly and assembly shield main machine includes a shield part, an excavation part, a driving part, and a disassembly and assembly part. The shield part forms an installation cavity, and the excavation part, the driving part, and the disassembly and assembly part are coaxially arranged in the installation cavity in sequence along the length direction of the shield part;

[0006] The excavation part is connected to the output shaft of the driving part, and the excavation part is used for expanding the diameter of the first tunnel;

[0007] The disassembling and assembling part includes a bracket, a disassembling mechanism and an assembling mechanism. The bracket is connected to the shield part and is used to connect with the shield tunneling machine. The disassembling mechanism is connected to the shield part and is used to grasp and disassemble the first tunnel segment. The assembling mechanism is slidably arranged on the bracket along the length direction of the shield part and is used to grasp and install the second tunnel segment.

[0008] Optionally, the shield part includes an outer shield, a propulsion unit and an inner shield. An installation cavity is formed inside the outer shield. The propulsion unit is connected to the outer shield and is used to push the second tunnel segment and drive the outer shield to move forward along the second tunnel. The inner shield is arranged in the installation cavity and is connected to the driving part. The inner diameter of the inner shield exceeds the outer diameter of the first tunnel segment by 25 mm to 45 mm.

[0009] Optionally, the disassembling mechanism includes an arc-shaped guard plate, a first annular seat, a first driving assembly and two relatively arranged robotic arms. The arc-shaped guard plate is connected to the inner shield. The first annular seat is connected to the arc-shaped guard plate, and a fastening structure is arranged on the first annular seat and is used to be clamped with the first tunnel segment.

[0010] The first driving assembly includes a sliding structure and a rotary driving part. The sliding structure is arranged on the first annular seat and corresponds to the robotic arm. The robotic arm is slidably arranged on the corresponding sliding structure along the length direction of the shield part. The sliding structure can drive the two robotic arms to move synchronously along the length direction of the shield part. The rotary driving part is arranged on the first annular seat, and the output end of the rotary driving part is connected to the sliding structure. The rotary driving part can drive the sliding structure to drive the two robotic arms to make a synchronous circular motion along the first annular seat. The robotic arm is used to grasp and disassemble the first tunnel segment and clamp the first tunnel segment into the fastening structure.

[0011] Optionally, the assembling mechanism includes a second annular seat, a second driving assembly and an assembling arm. The second annular seat is slidably arranged on the bracket along the length direction of the shield part.

[0012] The structure of the second driving assembly is the same as that of the first driving assembly. The second driving assembly can drive the assembling arm to move along the length direction of the shield part and make a circular motion along the second annular seat. The assembling arm is used to grasp and install the second tunnel segment.

[0013] Optionally, the excavation part includes a cutter head flange and an inner ring cutter. The cutter head flange is connected to the output end of the driving part, and the inner ring cutter is arranged on the side of the cutter head flange away from the driving part; the driving part includes a fastening flange, a driving rotation unit, and a driving flange. The driving rotation unit is connected to the inner shield through the fastening flange; the output end of the driving rotation unit is connected to the cutter head flange through the driving flange, and the driving rotation unit can drive the driving flange to drive the cutter head flange to perform a fixed-axis rotation movement relative to the fastening flange.

[0014] Optionally, an excavation chamber is formed between the excavation part and the outer shield; the shield part further includes a slag discharge unit and a sealing unit. The slag discharge unit is arranged between the inner shield and the outer shield, and the first end of the slag discharge unit communicates with the excavation chamber, and the other end communicates with the circulation system. The slag discharge unit is used for transporting the muck in the excavation chamber to the circulation system;

[0015] The sealing unit includes a first sealing structure and a second sealing structure. The first sealing structure is arranged on the inner wall of the installation cavity at the end away from the excavation part, and the first sealing structure is used for sealing the gap between the outer shield and the second tunnel segment; the second sealing structure is arranged on the inner wall of the inner shield, and the second sealing structure is used for sealing the gap between the inner shield and the first tunnel segment.

[0016] Optionally, an inner wear-resistant ring and an outer wear-resistant ring are respectively arranged on both sides of the driving flange; the driving part further includes an outer fixing ring, an inner fixing ring, an inner seal, and an outer seal. The outer fixing ring and the inner fixing ring are respectively arranged on the inner and outer sides of the driving flange, and the outer fixing ring is detachably connected to the fastening flange; the inner fixing ring is connected to the inner shield; the inner seal is arranged between the inner fixing ring and the inner wear-resistant ring, and the outer seal is arranged between the outer fixing ring and the outer wear-resistant ring.

[0017] In addition, the present invention also provides a shield machine, which includes a shield trolley, a hoisting system, and the tunnel synchronous disassembly and assembly shield main machine as described above. The shield trolley includes a trolley main body, an unloading unit, and a storage and transportation unit. The trolley main body is hinged to the bracket. The unloading unit is arranged on the trolley main body and is used for unloading the second tunnel segment on the transportation unit; the storage and transportation unit is arranged at the bottom of the trolley main body, and the storage and transportation unit is used for transporting the second tunnel segment to the grasping area of the assembly mechanism; the hoisting system is arranged on the trolley main body and is used for hoisting the first tunnel segment or the second tunnel segment.

[0018] Optionally, the hoisting system includes a transfer unit, a first hoisting unit, a second hoisting unit, and a third hoisting unit that are sequentially arranged on the trolley main body. The transfer unit is used to convey the first tunnel segment from the disassembly area to the transfer area; the first hoisting unit is used to hoist the second tunnel segment from the unloading unit onto the storage and transportation unit; the second hoisting unit is located in the disassembly area, and the second hoisting unit is used to hoist the first tunnel segment on the disassembly mechanism onto the transfer unit; the third hoisting unit is used to transfer the first tunnel segment on the transfer unit onto the transportation unit.

[0019] Optionally, the shield machine further includes a monitoring system and an operation trolley. The monitoring system is arranged on the trolley main body, and the monitoring system is used to monitor the shield trolley, the hoisting system, and the tunnel synchronous disassembly and assembly shield main machine; the operation trolley is arranged in the first tunnel, and the operation trolley is used to allow operators to perform pre-disassembly operations on the first tunnel segments.

[0020] In the technical solution of the present utility model, the second tunnel is excavated on the basis of the first tunnel by the excavation part, and the disassembly mechanism and the assembly mechanism are used to synchronously disassemble the first tunnel segments and install the second tunnel segments, which not only effectively improves the construction efficiency of the enlarged excavation tunnel, but also realizes the coordinated disassembly and assembly of the old and new tunnel segments. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 It is a schematic structural diagram of the tunnel synchronous disassembly and assembly shield main machine in Embodiment 1 of the present utility model;

[0023] Figure 2 It is a cross-sectional view of the tunnel synchronous disassembly and assembly shield main machine in Embodiment 1 of the present utility model;

[0024] Figure 3 It is Figure 2 the enlarged view of Part I in

[0025] Figure 4 It is a schematic structural diagram of the excavation part in Embodiment 1 of the present utility model;

[0026] Figure 5 It is a schematic structural diagram of the shield machine in Embodiment 2 of the present utility model;

[0027] Figure 6is Figure 5 N-N sectional view of

[0028] Figure 7 is Figure 5 M-M sectional view of

[0029] Figure 8 is Figure 5 O-O sectional view of

[0030] Figure 9 is Figure 5 P-P sectional view of

[0031] Figure 10 is Figure 5 Q-Q sectional view of

[0032] Explanation of the reference numerals in the drawings:

[0033] 1 Tunnel synchronous disassembling and assembling shield main machine, 101 Excavation part, 1011 Cutter head flange, 1012 Inner ring cutter, 102 Driving part, 1021 Fastening flange, 1022 Driving flange, 1023 Outer wear-resistant ring, 1024 Inner wear-resistant ring, 1025 Outer seal, 1026 Inner seal, 1027 Outer fixing ring, 1028 Inner fixing ring, 1029 Outer pressing ring, 1030 Inner pressing ring, 103 Shield part, 1031 Outer shield, 1032 Fixing frame, 1033 Propulsion unit, 1034 Inner shield, 1034A Inner shield flange, 1034B Thread hole, 1035 Slag discharging unit, 1036 Sealing unit, 1036A First sealing structure, 1036B Second sealing structure, 104 Assembling part, 1041 Bracket, 1042 Disassembling mechanism, 1042A Arc-shaped guard plate, 1042B First annular seat, 1042C Clamping structure, 1042D Sliding structure, 1042E Robot arm, 1043 Assembling mechanism, 1043A Second annular seat, 1043B Assembling arm; 2 Shield trolley, 201 Unloading unit, 202 Storage and transportation unit; 3 Hoisting system, 301 First hoisting unit, 302 Second hoisting unit, 303 Third hoisting unit, 304 Transfer unit, 305 Storage box, 306 Transportation unit; 4 Monitoring system, 5 Operation trolley, 6 First tunnel, 601 First tunnel segment, 7 Second tunnel, 701 Second tunnel segment.

[0034] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0035] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings, but the present utility model can be implemented in many different ways defined and covered.

[0036] The utility model provides a tunnel synchronous disassembly and assembly shield main unit and a shield machine, aiming to solve the problems of low efficiency of tunnel expansion construction by existing equipment and difficulty in coordinated disassembly and assembly of new and old tunnel segments.

[0037] Example 1

[0038] like Figure 1 and Figure 5 As shown, this embodiment provides a tunnel synchronous disassembly and assembly shield machine 1, which is used to rebuild the existing first tunnel 6 to obtain the second tunnel 7. The first tunnel segment 601 is installed in the first tunnel 6, and the second tunnel segment 701 will be installed in the second tunnel 7. During the reconstruction and construction process, the first tunnel segment 601 needs to be dismantled and the second tunnel segment 701 needs to be reinstalled.

[0039] The tunnel synchronous disassembly shield main machine 1 includes a shield part 103, an excavation part 101, a driving part 102 and a disassembly part 104. The shield part 103 forms an installation cavity. The excavation part 101, the driving part 102 and the disassembly part 104 are coaxially arranged in the installation cavity in sequence along the length direction of the shield part 103; the excavation part 101 is connected to the output shaft of the driving part 102, and the excavation part 101 is used to expand the diameter of the first tunnel 6; the disassembly part 104 includes a bracket 1041 , a disassembly mechanism 1042 and an assembling mechanism 1043, a bracket 1041 is connected to the shield part 103, and the bracket 1041 is used to connect to the shield trolley 2; the disassembly mechanism 1042 is connected to the shield part 103, and the disassembly mechanism 1042 is used to grab and disassemble the first tunnel segment 601; the assembling mechanism 1043 is slidably set on the bracket 1041 along the length direction of the shield part 103, and the assembling mechanism 1043 is used to grab and install the second tunnel segment 701. The excavation diameter of the inner ring cutter 1012 is slightly larger than the outer diameter of the first tunnel segment 601 and the maximum outer diameter of the shield part 103. In actual operation, the order in the early stage of construction is to first use the excavation part 101 to excavate to the second tunnel 7, then assemble the second tunnel segment 701, and finally disassemble the first tunnel segment 601; after a certain distance of construction, the excavation part 101 performs excavation work in front, and the disassembly mechanism 1042 and the assembly mechanism 1043 perform disassembly and assembly work synchronously in the back; the excavation part 101 excavates the second tunnel 7 on the basis of the first tunnel 6, and the disassembly mechanism 1042 and the assembly mechanism 1043 are used to synchronously disassemble the first tunnel segment 601 and install the second tunnel segment 701, which not only effectively improves the construction efficiency of the expanded tunnel, but also realizes the coordinated disassembly and assembly of the new and old tunnel segments.

[0040] Among them, the shield part 103 includes an outer shield 1031, a propulsion unit 1033, and an inner shield 1034. An installation cavity is formed inside the outer shield 1031; the propulsion unit 1033 is connected to the outer shield 1031, and the propulsion unit 1033 is used to push against the second tunnel segment 701 and drive the outer shield 1031 to move along the second tunnel 7; the inner shield 1034 is arranged in the installation cavity, and the inner shield 1034 is connected to the driving part 102. The inner diameter of the inner shield 1034 exceeds the outer diameter of the first tunnel segment 601 by 25 mm to 45 mm. The outer shield 1031 is designed as a cylindrical structure. The front side inside thereof is in close fit with the driving part 102, and a sealing system is arranged between the two to effectively seal the contact toroidal surface; a fixing frame 1032 is also arranged in the installation cavity. The fixing frame 1032 is fixed in the middle area of the installation cavity, and a "mouth"-shaped through hole is arranged in the middle of the fixing frame 1032; the inner shield 1034 is designed as a barrel shape, and a channel for the first tunnel segment 601 to pass through is formed inside, and it is arranged in the central area of the shield part 103. An inner shield flange 1034A is arranged at the front end of the inner shield 1034. The inner shield flange 1034A is detachably bolted and fixedly connected to the end face threaded holes 1034B uniformly arranged along the circumferential direction on the front end face of the inner fixing ring 1028; the number of the propulsion units 1033 can be multiple. The multiple propulsion units 1033 are evenly distributed in the installation cavity of the outer shield 1031 along the circumferential direction, and the annular axial plane formed by the axes of all the cylinders of the propulsion unit 1033 coincides with the central axial plane of the second tunnel segment 701 to ensure that the axis of each cylinder group just acts on the central axial plane of the second tunnel segment 701. The output ends of the propulsion units 1033 extend out and push against the end face of the second tunnel segment 701, which can provide driving force for the overall stepping of the device. The inner shield 1034 can maintain the shape of the first tunnel 6 during the disassembly operation of the first tunnel 6 to ensure that the first tunnel segments 601 do not fall off loosely. The outer shield 1031 and the inner shield 1034 can divide the installation cavity into two independent working spaces, which can not only play a protective role but also ensure the synchronous progress of disassembly and assembly.

[0041] Such as Figure 6As shown, further, the disassembly mechanism 1042 includes an arc-shaped guard plate 1042A, a first annular seat 1042B, a first drive assembly, and two robotic arms 1042E arranged oppositely. The arc-shaped guard plate 1042A is connected to the inner shield 1034; the first annular seat 1042B is connected to the arc-shaped guard plate 1042A, and a fastening structure 1042C is provided on the first annular seat 1042B for clamping with the first tunnel segment 601; the first drive assembly includes a sliding structure 1042D and a rotary drive member. The sliding structure 1042D is arranged on the first annular seat 1042B and corresponds to the robotic arm 1042E. The robotic arm 1042E is slidably arranged on the corresponding sliding structure 1042D along the length direction of the shield part 103. The sliding structure 1042D can drive the two robotic arms 1042E to move synchronously along the length direction of the shield part 103; the rotary drive member is arranged on the first annular seat 1042B, and the output end of the rotary drive member is connected to the sliding structure 1042D. The rotary drive member can drive the sliding structure 1042D to drive the two robotic arms 1042E to perform a synchronous circular motion along the first annular seat 1042B; the robotic arm 1042E is used to grasp and disassemble the first tunnel segment 601 and snap the first tunnel segment 601 into the fastening structure 1042C. The bracket 1041 includes two symmetrically arranged support arms at left and right, with the front ends fixedly connected to the rear end face of the fixed frame 1032. Symmetrically arranged support seats are respectively provided on the inner sides of the rear parts of the support arms. The first annular seat 1042B is connected between the two support seats; on the left and right sides of the outer wall of the rear part of the inner shield 1034, threaded holes 1034B are symmetrically arranged. The inner diameter of the inner wall of the arc-shaped guard plate 1042A is the same as the outer diameter of the outer wall of the inner shield 1034. Mounting holes corresponding one-to-one to the threaded holes 1034B are provided on the arc-shaped guard plate 1042A for bolted connection and fixation of the inner shield 1034; after the operator removes the connectors on the first tunnel segment 601, the disassembly mechanism 1042 drives the robotic arm 1042E to grasp the first tunnel segment 601 through the first drive assembly and snap the first tunnel segment 601 into the fastening structure 1042C to complete the disassembly of the first tunnel segment 601. The robotic arm 1042E can complete the disassembly operation of the segments in all directions of the first tunnel under the drive of the first drive assembly, with simple operation and high disassembly efficiency.

[0042] Furthermore, the assembling mechanism 1043 includes a second annular seat 1043A, a second driving assembly, and an assembling arm 1043B. The second annular seat 1043A is slidably disposed on the bracket 1041 along the length direction of the shield portion 103. The structure of the second driving assembly is the same as that of the first driving assembly. The second driving assembly can drive the assembling arm 1043B to move along the length direction of the shield portion 103 and perform a circular motion along the second annular seat 1043A. The assembling arm 1043B is used to grasp and install the second tunnel segment 701. A sliding groove parallel to the tunnel axis is provided on the outer side of the support arm, which allows the second annular seat 1043A of the assembling mechanism 1043 to reciprocate back and forth along the sliding groove. The assembling arm 1043B can complete the segment installation operation in all directions of the second tunnel 7 under the drive of the second driving assembly.

[0043] The excavation part 101 includes a cutter head flange 1011 and an inner ring cutter 1012. The cutter head flange 1011 is connected to the output end of the driving part 102, and the inner ring cutter 1012 is disposed on the side of the cutter head flange 1011 away from the driving part 102. The driving part 102 includes a fastening flange 1021, a driving rotation unit, and a driving flange 1022. The driving rotation unit (adopting a main driving unit commonly used in shield machines, which can be directly purchased externally) is connected to the inner shield 1034 through the fastening flange 1021. The output end of the driving rotation unit is connected to the cutter head flange 1011 through the driving flange 1022. The driving rotation unit can drive the driving flange 1022 to drive the cutter head flange 1011 to perform a fixed-axis rotation motion relative to the fastening flange 1021. The driving rotation unit drives the cutter head flange 1011 to drive the inner ring cutter 1012 to perform an excavation operation to perform an expanding diameter construction on the basis of the first tunnel 6 to obtain the second tunnel 7. In this embodiment, the difference between the excavation diameter of the inner ring cutter 1012 and the outer diameter of the first tunnel segment 601 is 3 cm - 5 cm, and the difference between the excavation diameter of the inner ring cutter 1012 and the maximum outer diameter of the shield portion 103 is 5 cm.

[0044] Specifically, an excavation chamber is formed between the excavation part 101 and the outer shield 1031; the shield part 103 further includes a slag discharging unit 1035 and a sealing unit 1036. The slag discharging unit 1035 is arranged between the inner shield 1034 and the outer shield 1031, and the first end of the slag discharging unit 1035 is communicated with the excavation chamber, and the other end is communicated with the circulation system. The slag discharging unit 1035 is used for conveying the muck in the excavation chamber to the circulation system; the sealing unit 1036 includes a first sealing structure 1036A and a second sealing structure 1036B. The first sealing structure 1036A is arranged on the inner wall of the installation cavity at the end far away from the excavation part 101, and the first sealing structure 1036A is used for sealing the gap between the outer shield 1031 and the second tunnel segment 701; the second sealing structure 1036B is arranged on the inner wall of the inner shield 1034, and the second sealing structure 1036B is used for sealing the gap between the inner shield 1034 and the first tunnel segment 601. The slag discharging unit 1035 can realize the efficient discharge of the muck in the excavation chamber, avoid the muck from blocking the inner ring cutter 1012 and affecting the excavation operation effect; the first sealing structure 1036A is a tail seal system, which can effectively seal the inner wall of the tail of the outer shield 1031 and the outer wall of the second tunnel 7; the second sealing structure 1036B includes an emergency sealing airbag device and a tail seal system of the inner shield 1034. The emergency sealing airbag device is arranged at the middle position of the inner shield 1034 and is used for emergency sealing between the inner shield 1034 and the outer wall of the first tunnel 6, and the tail seal system of the inner shield 1034 is used to ensure the effective sealing between the tail of the inner shield 1034 and the outer wall of the first tunnel 6.

[0045] In addition, an inner wear-resistant ring 1024 and an outer wear-resistant ring 1023 are respectively arranged on both sides of the driving flange 1022; the driving part 102 further includes an outer fixing ring 1027, an inner fixing ring 1028, an inner sealing member 1026 and an outer sealing member 1025. The outer fixing ring 1027 and the inner fixing ring 1028 are respectively arranged on the inner and outer sides of the driving flange 1022, and the outer fixing ring 1027 is detachably connected with the fastening flange 1021; the inner fixing ring 1028 is connected with the inner shield 1034; the inner sealing member 1026 is arranged between the inner fixing ring 1028 and the inner wear-resistant ring 1024, and the outer sealing member 1025 is arranged between the outer fixing ring 1027 and the outer wear-resistant ring 1023. The driving part 102 further includes an outer pressing ring 1029 and an inner pressing ring 1030. The outer sealing member 1025 is axially pressed and limited by the outer pressing ring 1029, and the inner sealing member 1026 is axially pressed and limited by the inner pressing ring 1030, which can effectively protect and seal the driving flange 1022 and extend its service life.

[0046] Embodiment 2

[0047] As Figures 7 to 10As shown in the figure, in this embodiment, a shield machine is provided. The shield machine includes a shield trolley 2, a lifting and transportation system 3, and the tunnel synchronous disassembly and assembly shield main body 1 as described above. The shield trolley 2 includes a trolley main body, an unloading unit 201, and a storage and transportation unit 202. The trolley main body is hinged to the bracket 1041. The unloading unit 201 is arranged on the trolley main body and is used for unloading the second tunnel segment 701 on the transportation unit 306. The storage and transportation unit 202 is arranged at the bottom of the trolley main body, and the storage and transportation unit 202 is used for transporting the second tunnel segment 701 to the grasping area of the assembly mechanism 1043. The lifting and transportation system 3 is arranged on the trolley main body and is used for lifting and transporting the first tunnel segment 601 or the second tunnel segment 701. The unloading unit 201 is symmetrically arranged on the lower part of the main frame of the shield trolley 2 on the left and right, and quickly unloads and stores the second tunnel segment 701. The storage and transportation unit 202 is arranged at the bottom of the shield trolley 2, stores the second tunnel segment 701, and transports the segment to the grasping area of the assembly mechanism 1043, so that the transportation of the first tunnel segment 601 and the second tunnel segment 701 can be carried out synchronously, and the disassembly and assembly collaborative operation can be realized.

[0048] Among them, the lifting and transportation system 3 includes a transfer unit 304, a first lifting unit 301, a second lifting unit 302, and a third lifting unit 303 arranged in sequence on the trolley main body. The transfer unit 304 is used for transporting the first tunnel segment 601 from the disassembly area to the transfer area. The first lifting unit 301 is used for lifting the second tunnel segment 701 from the unloading unit 201 to the storage and transportation unit 202. The second lifting unit 302 is located in the disassembly area, and the second lifting unit 302 is used for lifting the first tunnel segment 601 on the disassembly mechanism 1042 to the transfer unit 304. The third lifting unit 303 is used for transferring the first tunnel segment 601 on the transfer unit 304 to the transportation unit 306.

[0049] The lifting system 3 is installed at the set position of the shield trolley 2, including a first lifting unit 301, a second lifting unit 302, a third lifting unit 303, a transfer unit 304, a storage box 305, and a transport unit 306; the first lifting unit 301 is arranged on the middle frame of the shield trolley 2, and its rear part extends to the unloading area on the upper part of the unloading unit 201, and its front part extends to the storage area on the upper part of the storage and transportation unit 202; the first lifting unit 301 is sufficient to grab and lift the second tunnel segment 701 from the unloading unit 201 to the storage unit; the second lifting unit 302 is arranged on the top of the first trolley frame, and its front end extends to the upper part of the disassembly mechanism 1042 and the rear end extends to the middle of the first trolley, so as to meet the lifting unit transportation after the first tunnel segment 601 is disassembled; the third lifting unit 303 is arranged in the middle upper part of the tail trolley, The storage box 305 and the first tunnel segment 601 can be lifted; the transfer unit 304 is arranged at the middle level of the shield trolley 2, and can reciprocate along the track between the second lifting unit 302 area and the third lifting unit 303 area; the storage box 305 is placed on the transfer unit 304, and the disassembled first tunnel segment 601 can be transferred. The storage box 305 containing the first tunnel segment 601 is transported to the third lifting unit 303 area with the transfer unit 304, and then lifted to the transport unit 306 by the third lifting unit 303, and transported to the outside of the tunnel by the transport unit 306; the transport unit 306 can transport the second tunnel segment 701, the first tunnel segment 601 and other equipment maintenance and operation materials; the lifting system 3 can meet various lifting needs in the segment transportation process, and effectively improve the segment transportation efficiency.

[0050] In addition, the shield machine also includes a monitoring system 4 and an operation trolley 5. The monitoring system 4 is arranged on the trolley body, and the monitoring system 4 is used to monitor the shield trolley 2, the hoisting system 3 and the tunnel synchronous disassembly and assembly shield main machine 1; the operation trolley 5 is arranged in the first tunnel 6, and the operation trolley 5 is used for the operator to perform the pre-dismantling operation of the first tunnel segment 601. The pre-dismantling operation is that the operator performs the pre-dismantling of the first tunnel segment 601 connector on the operation trolley 5. If the first tunnel 6 is a jacking tunnel, the operation trolley 5 does not need to be set.

[0051] The actual tunnel synchronous disassembly and assembly operation steps include:

[0052] 1): The work trolley 5 is preferentially placed at the set position in the first tunnel 6, and after ensuring that the axis of the equipment coincides with the axis of the first tunnel 6, the shield machine is started to excavate. When the equipment excavates the set distance normally, that is, when the first tunnel segment 601 extends into the inner shield 1034 and is about to reach the front end of the disassembly mechanism 1042 (in this case, the 5-ring first tunnel segment 601 is taken), the operator disassembles the first ring segment connector of the first tunnel 6 through the work trolley 5 (preferentially disassembles the top block connector);

[0053] 2): The equipment continues to tunnel and installs the second tunnel segment 701. After the first segment of the first tunnel 6 reaches the grasping area of the disassembly mechanism 1042, start the grasping mechanism to disassemble the first segment in sequence (give priority to disassembling the top block, then grasp the adjacent top block and then disassemble the connecting piece between the two).

[0054] 3): The disassembled segments are hoisted by the second hoist and transported into the storage box 305. After the storage box 305 stores a set number of segments (≥ 2 segments), start the transfer unit 304 to transport the storage box 305 together with the segments to the third hoisting area.

[0055] 4): Then start the third hoist to hoist the storage box 305 together with the segments onto the transport unit 306 (transport trolley). When the transport vehicle is loaded with a set number of storage boxes (≥ 3 boxes), start the transport unit 306 to transport the storage box 305 together with the segments to a set position outside the tunnel. After unloading the segments, the storage box 305 needs to be transported back to the third hoisting area.

[0056] 5): At the same time, the assembling mechanism 1043 synchronously grasps and installs the second tunnel segment 701 to achieve synchronous disassembly and assembly operations.

[0057] 6): Repeat the above steps 2)-5) until the demolition of the entire first tunnel 6 and the construction of the second tunnel 7 are completed.

[0058] Since the shield machine includes the tunnel synchronous disassembly and assembly shield main machine 1 as described above, this shield machine has all the beneficial effects of the above tunnel synchronous disassembly and assembly shield main machine 1, and will not be elaborated one by one here.

[0059] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A tunnel synchronous disassembly and assembly shield main machine is used for reconstructing the existing first tunnel (6) to obtain a second tunnel (7), and is characterized in that, The tunnel synchronous disassembly and assembly shield main machine (1) includes a shield part (103), an excavation part (101), a driving part (102) and a disassembly and assembly part (104). The shield part (103) forms an installation cavity, and the excavation part (101), the driving part (102) and the disassembly and assembly part (104) are coaxially arranged in the installation cavity in sequence along the length direction of the shield part (103). The excavation part (101) is connected to the output shaft of the driving part (102), and the excavation part (101) is used for expanding the diameter of the first tunnel (6). The disassembly and assembly part (104) includes a bracket (1041), a disassembly mechanism (1042) and an assembly mechanism (1043). The bracket (1041) is connected to the shield part (103), and the bracket (1041) is used for connecting with the shield trolley (2). The disassembly mechanism (1042) is connected to the shield part (103), and the disassembly mechanism (1042) is used for grasping and disassembling the first tunnel segment (601). The assembly mechanism (1043) is slidably arranged on the bracket (1041) along the length direction of the shield part (103), and the assembly mechanism (1043) is used for grasping and installing the second tunnel segment (701).

2. The tunnel synchronous disassembly and assembly shield main machine according to claim 1, characterized in that, The shield part (103) includes an outer shield (1031), a propulsion unit (1033) and an inner shield (1034). The installation cavity is formed inside the outer shield (1031). The propulsion unit (1033) is connected to the outer shield (1031), and the propulsion unit (1033) is used for pushing the second tunnel segment (701) and driving the outer shield (1031) to move forward along the second tunnel (7). The inner shield (1034) is arranged in the installation cavity, and the inner shield (1034) is connected to the driving part (102). The inner diameter of the inner shield (1034) exceeds the outer diameter of the first tunnel segment (601) by 25 mm to 45 mm.

3. The tunnel synchronous disassembly and assembly shield main machine according to claim 2, wherein, The disassembly mechanism (1042) includes an arc-shaped guard plate (1042A), a first annular seat (1042B), a first driving assembly and two relatively arranged robotic arms (1042E). The arc-shaped guard plate (1042A) is connected to the inner shield (1034). The first annular seat (1042B) is connected to the arc-shaped guard plate (1042A), and a fastening structure (1042C) is arranged on the first annular seat (1042B), and the fastening structure (1042C) is used for clamping with the first tunnel segment (601). The first driving assembly includes a sliding structure (1042D) and a rotary driving member. The sliding structure (1042D) is disposed on the first annular seat (1042B) and is correspondingly arranged with the robotic arm (1042E). The robotic arm (1042E) is slidably disposed on the corresponding sliding structure (1042D) along the length direction of the shield portion (103). The sliding structure (1042D) can drive the two robotic arms (1042E) to move synchronously along the length direction of the shield portion (103). The rotary driving member is disposed on the first annular seat (1042B), and the output end of the rotary driving member is connected to the sliding structure (1042D). The rotary driving member can drive the sliding structure (1042D) to drive the two robotic arms (1042E) to perform a synchronous circular motion along the first annular seat (1042B). The robotic arm (1042E) is used for grasping and disassembling the first tunnel segment (601) and clamping the first tunnel segment (601) into the fastening structure (1042C).

4. The tunnel synchronous disassembly and assembly shield main machine according to claim 3, wherein, The assembling mechanism (1043) includes a second annular seat (1043A), a second driving assembly, and an assembling arm (1043B). The second annular seat (1043A) is slidably disposed on the bracket (1041) along the length direction of the shield portion (103). The structure of the second driving assembly is the same as that of the first driving assembly. The second driving assembly can drive the assembling arm (1043B) to move along the length direction of the shield portion (103) and perform a circular motion along the second annular seat (1043A). The assembling arm (1043B) is used for grasping and installing the second tunnel segment (701).

5. The tunnel synchronous disassembly and assembly shield main machine according to claim 4, wherein, The excavation portion (101) includes a cutter head flange (1011) and an inner ring cutter (1012). The cutter head flange (1011) is connected to the output end of the driving portion (102). The inner ring cutter (1012) is disposed on the side of the cutter head flange (1011) away from the driving portion (102). The driving portion (102) includes a fastening flange (1021), a driving rotation unit, and a driving flange (1022). The driving rotation unit is connected to the inner shield (1034) through the fastening flange (1021). The output end of the driving rotation unit is connected to the cutter head flange (1011) through the driving flange (1022). The driving rotation unit can drive the driving flange (1022) to drive the cutter head flange (1011) to perform a fixed-axis rotation motion relative to the fastening flange (1021).

6. The tunnel synchronous disassembly and assembly shield main machine according to any one of claims 2 to 5, characterized in that, An excavation chamber is formed between the excavation part (101) and the outer shield (1031); the shield part (103) further includes a slag discharging unit (1035) and a sealing unit (1036). The slag discharging unit (1035) is arranged between the inner shield (1034) and the outer shield (1031), and the first end of the slag discharging unit (1035) is communicated with the excavation chamber, and the other end is communicated with the circulation system. The slag discharging unit (1035) is used for conveying the muck in the excavation chamber into the circulation system. The sealing unit (1036) includes a first sealing structure (1036A) and a second sealing structure (1036B). The first sealing structure (1036A) is arranged on the inner wall of the installation cavity at the end far from the excavation part (101), and the first sealing structure (1036A) is used for sealing the gap between the outer shield (1031) and the second tunnel segment (701); the second sealing structure (1036B) is arranged on the inner wall of the inner shield (1034), and the second sealing structure (1036B) is used for sealing the gap between the inner shield (1034) and the first tunnel segment (601).

7. The tunnel synchronous disassembly and assembly shield main machine according to claim 5, wherein, Inner wear-resistant rings (1024) and outer wear-resistant rings (1023) are respectively arranged on both sides of the driving flange (1022); the driving part (102) further includes an outer fixing ring (1027), an inner fixing ring (1028), an inner sealing member (1026) and an outer sealing member (1025). The outer fixing ring (1027) and the inner fixing ring (1028) are respectively arranged on the inner and outer sides of the driving flange (1022), and the outer fixing ring (1027) is detachably connected with the fastening flange (1021); the inner fixing ring (1028) is connected with the inner shield (1034); the inner sealing member (1026) is arranged between the inner fixing ring (1028) and the inner wear-resistant ring (1024), and the outer sealing member (1025) is arranged between the outer fixing ring (1027) and the outer wear-resistant ring (1023).

8. A shield machine, characterized in that, The shield machine includes a shield trolley (2), a hoisting system (3) and a tunnel synchronous disassembly and assembly shield main machine (1) according to any one of claims 1 to 7. The shield trolley (2) includes a trolley main body, an unloading unit (201) and a storage and transportation unit (202). The trolley main body is hinged to the bracket (1041). The unloading unit (201) is arranged on the trolley main body and is used for unloading the second tunnel segment (701) on the transportation unit (306); the storage and transportation unit (202) is arranged at the bottom of the trolley main body, and the storage and transportation unit (202) is used for conveying the second tunnel segment (701) to the grasping area of the assembling mechanism (1043); the hoisting system (3) is arranged on the trolley main body and is used for hoisting the first tunnel segment (601) or the second tunnel segment (701).

9. The shield machine according to claim 8, wherein, The hoisting system (3) includes a transfer unit (304), a first hoisting unit (301), a second hoisting unit (302) and a third hoisting unit (303) that are sequentially arranged on the trolley body. The transfer unit (304) is used to convey the first tunnel segment (601) from the disassembly area to the loading area; the first hoisting unit (301) is used to hoist the second tunnel segment (701) from the unloading unit (201) to the storage and transportation unit (202); the second hoisting unit (302) is located in the disassembly area, and the second hoisting unit (302) is used to hoist the first tunnel segment (601) on the disassembly mechanism (1042) to the transfer unit (304); the third hoisting unit (303) is used to transfer the first tunnel segment (601) on the transfer unit (304) to the transportation unit (306).

10. The shield machine according to claim 8, characterized in that, The shield machine further includes a monitoring system (4) and an operation trolley (5). The monitoring system (4) is arranged on the trolley body, and the monitoring system (4) is used to monitor the shield trolley (2), the hoisting system (3) and the tunnel synchronous disassembly and assembly shield main machine (1); the operation trolley (5) is arranged in the first tunnel (6), and the operation trolley (5) is used for operators to perform pre-disassembly operations on the first tunnel segment (601).

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