Shield machine suitable for tunnel construction of various pipe segments

Abstract

The application discloses a shield machine suitable for tunnel construction of various pipe piece outer diameters, which comprises a main drive mounting frame, an H-shaped beam, a shield body and a partition plate, the shield body comprises a plurality of blocks, the blocks comprise front blocks and middle blocks arranged along the axial direction of the shield body, the front blocks are detachably connected with the main drive mounting frame, and the middle blocks are detachably connected with the H-shaped beam; the partition plate is detachably arranged between two adjacent blocks, and the number of the partition plates in the circumferential direction of the shield body is at least one. The shield machine of the embodiment of the application can flexibly adjust the diameter of the shield body by changing the number of the partition plates, is suitable for tunnel construction of various pipe piece outer diameters, increases the application range of the shield machine, and reduces the need of replacing or reforming equipment due to diameter mismatch. Without adding a complex variable-diameter module, manufacturing cost and manufacturing period are reduced, downtime in construction can be reduced, and pushing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of tunnel boring machine (TBM) technology, and specifically to a TBM suitable for tunnel construction with various segment outer diameters. Background Technology

[0002] Currently, the outer diameter of lining segments in tunnel boring machine (TBM) construction in China varies greatly. Existing TBMs with single-diameter adaptability require diameter changes when constructing tunnels of different diameters. However, existing TBM diameter-changing technologies suffer from numerous segments, complex structures, and the need to manufacture a large number of new components during the diameter-changing process. For example, the variable-diameter TBM technology shown in authorization announcement number CN113638740A involves a central block and a variable-diameter module forming a cylindrical body via a circumferential connecting plate, requiring the manufacture of new modules for diameter changes. Furthermore, this technology suffers from limitations in the diameter-changing range, complex connection structures, unsuitable component positions (such as the auger inlet being too high or the soil chamber door being too low), difficulty in adjusting the position of the propulsion cylinder during diameter changes, significant deviation between the center of the propulsion cylinder and the center of the lining segment, long manufacturing cycles for new diameter-changing modules, and high costs, all of which affect the applicability and efficiency of TBMs in tunnel construction of different diameters. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of the present invention propose a tunnel boring machine suitable for tunnel construction with various segment outer diameters.

[0005] The tunnel boring machine (TBM) of this invention, applicable to tunnel construction with various segment outer diameters, includes a main drive mounting frame, an H-beam, a shield body, and partition plates. The shield body comprises multiple segments spaced apart circumferentially along the shield body. Each segment includes a front segment and a middle segment arranged axially along the shield body. The front segment is detachably connected to the main drive mounting frame, and the middle segment is detachably connected to the H-beam. The partition plates are detachably disposed between adjacent segments, and the number of partition plates along the circumference of the shield body is at least one.

[0006] In some embodiments, a first flange is provided on both sides of the front section, a first through hole is provided on the partition plate, and the first flanges of two adjacent front sections are connected by a first bolt passing through the first through hole.

[0007] In some embodiments, the main drive mounting bracket includes a support ring and a first connecting plate. The support ring is coaxially arranged with the shield body. The first connecting plate surrounds the outer peripheral surface of the support ring in the circumferential direction and extends radially along the shield body. A second connecting plate extending radially along the shield body is provided on the inner wall surface of the front segment. The second connecting plate is detachably connected to the first connecting plate.

[0008] In some embodiments, the first connecting plate is provided with a plurality of first connecting holes, the plurality of first connecting holes are divided into a plurality of hole groups, the plurality of hole groups are arranged radially spaced along the shield body, the hole group includes a plurality of first connecting holes arranged circumferentially spaced along the shield body, the second connecting plate is provided with a plurality of second connecting holes arranged circumferentially spaced along the shield body, and the first connecting plate and the second connecting plate are connected by second bolts passing through the first connecting holes and the second connecting holes.

[0009] In some embodiments, the first connecting plate is provided with a first pin hole, the second connecting plate is provided with a second pin hole, the first pin hole and the second pin hole are connected by a pin, and an annular sealing ring mounting groove is provided on the end face of the first connecting plate adjacent to the second connecting plate, and an annular sealing ring is provided in the sealing ring mounting groove.

[0010] In some embodiments, a boss is provided on the outer peripheral surface of the support ring, and the boss is used to weld and connect with the partition plate.

[0011] In some embodiments, a second flange is provided on the inner wall of the middle section, a third flange is provided on the H-beam, at least one adjusting plate is provided between the second flange and the third flange, a second through hole is provided on the adjusting plate, and the second flange and the third flange are connected by a second bolt passing through the second through hole.

[0012] In some embodiments, the tunnel boring machine of the present invention applicable to tunnel construction with multiple segment outer diameters further includes a propulsion cylinder, a mounting base, and an adjusting support. The mounting base and the adjusting support are spaced apart along the axial direction of the shield body on the middle segment, and the mounting base is arranged adjacent to the front segment. Each of the mounting base and the adjusting support is adjustable in radial position along the shield body. One end of the propulsion cylinder is connected to the mounting base, and the middle part of the propulsion cylinder is connected to the adjusting support.

[0013] In some embodiments, the middle block is provided with a first mounting plate and a second mounting plate arranged radially upward along the shield body. The first mounting plate is provided with a first clamping member, the first clamping member being adjustable in the radial direction along the shield body. The second mounting plate is provided with a second clamping member, the second clamping member being adjustable in the radial direction along the shield body. The mounting base is clamped between the first clamping member and the second clamping member. The middle block is also provided with a third mounting plate, the third mounting plate being provided with a pushing member, the pushing member being adjustable in the radial direction along the shield body, and the top end of the pushing member abutting against the adjusting support.

[0014] In some embodiments, the shield body includes four sections: an upper section, a lower section, a left section, and a right section. The upper section is provided with a personnel cabin transition chamber, and the lower section is provided with a propeller mounting base.

[0015] The tunnel boring machine (TBM) of this invention flexibly adjusts the shield diameter by changing the number of partition plates, making it suitable for tunnel construction with various segment outer diameters. This increases the TBM's applicability and reduces the need for equipment replacement or modification due to diameter mismatches. Compared to traditional diameter-changing technologies that require the manufacture of numerous new components, the TBM of this invention only requires adjusting the number of partition plates, eliminating the need for complex diameter-changing modules, thereby reducing manufacturing costs and time. Because the TBM can quickly adapt to tunnels of different diameters, it reduces downtime during construction and improves propulsion efficiency. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a tunnel boring machine according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the installation of the main drive mounting frame of the tunnel boring machine according to an embodiment of the present invention.

[0018] Figure 3 This is an exploded view of the installation of the main drive mounting frame of the tunnel boring machine according to an embodiment of the present invention.

[0019] Figure 4 This is a partial schematic diagram of a tunnel boring machine according to an embodiment of the present invention.

[0020] Figure 5 This is a partial sectional view of the tunnel boring machine according to an embodiment of the present invention.

[0021] Figure 6 This is a partial sectional view of the tunnel boring machine according to an embodiment of the present invention.

[0022] Figure 7 This is a schematic diagram of the installation of the H-shaped beam of the tunnel boring machine according to an embodiment of the present invention.

[0023] Figure 8 This is an exploded view of the installation of the H-shaped beam of the tunnel boring machine according to an embodiment of the present invention.

[0024] Figure 9 This is a partial sectional view of the tunnel boring machine according to an embodiment of the present invention.

[0025] Figure label:

[0026] 1. Main drive mounting bracket; 101. Support ring; 102. First connecting plate; 1021. First connecting hole; 1022. First pin hole; 1023. Sealing ring mounting groove; 103. Boss; 2. H-beam; 3. Shield body; 301. Segment; 3011. Front segment; 3012. Middle segment; 4. Partition plate; 5. First flange; 6. First bolt; 7. Second connecting plate; 701. Second connecting hole; 702. Second pin hole; 8. Second bolt; 9. Annular sealing ring; 10. Second flange; 11. Third flange; 12. Adjusting plate; 13. Propulsion cylinder; 14. Mounting base; 15. Adjusting support; 16. First mounting plate; 17. Second mounting plate; 18. First clamping component; 19. Second clamping component; 20. Third mounting plate; 21. Pushing component. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0028] like Figures 1 to 9 As shown, the tunnel boring machine of this embodiment includes a main drive mounting frame 1, an H-shaped beam 2, a shield body 3, and partition plates 4. The shield body 3 includes multiple segments 301, which are spaced apart circumferentially along the shield body 3. Each segment 301 includes a front segment 3011 and a middle segment 3012 arranged axially along the shield body 3. The front segment 3011 is detachably connected to the main drive mounting frame 1, and the middle segment 3012 is detachably connected to the H-shaped beam 2. The partition plates 4 are detachably disposed between adjacent segments 301, and there is at least one partition plate 4 circumferentially along the shield body 3.

[0029] Since the front segment 3011 is detachably connected to the main drive mounting frame 1 and the middle segment 3012 is detachably connected to the H-beam 2, when it is necessary to increase the diameter of the shield body 3, the diameter of the shield body 3 is increased by increasing the number of partition plates 4. When it is necessary to decrease the diameter of the shield body 3, the diameter of the shield body 3 is decreased by decreasing the number of partition plates 4.

[0030] The tunnel boring machine (TBM) of this invention flexibly adjusts the diameter of the shield body 3 by changing the number of partition plates 4, making it suitable for tunnel construction with various segment outer diameters. This increases the TBM's applicability and reduces the need for equipment replacement or modification due to diameter mismatch. Compared to traditional diameter-changing technologies that require the manufacture of numerous new components, the TBM of this invention only requires adjusting the number of partition plates 4, eliminating the need for complex diameter-changing modules, thereby reducing manufacturing costs and time. Because the TBM can quickly adapt to tunnels of different diameters, it reduces downtime during construction and improves propulsion efficiency.

[0031] In some embodiments, a first flange 5 is provided on both sides of the front segment 3011, and a first through hole is provided on the partition plate 4. The first flanges 5 of two adjacent front segments 3011 are connected by a first bolt 6 passing through the first through hole.

[0032] The tunnel boring machine of this invention features first flanges 5 on both sides of the front segment 3011 and first through holes in the partition plate 4, allowing adjacent segments 301 to be securely connected together by first bolts 6, thus improving the connection stability between segments 301. This design simplifies the connection process between segments 301; simply passing bolts through the through holes and fixing them completes the connection, facilitating rapid assembly and disassembly. The standardization of the flange and bolt connections improves the interchangeability between segments 301, facilitating maintenance and replacement. When the diameter of the shield body 3 needs adjustment, it can be quickly achieved by increasing or decreasing the number of partition plates 4; this flexibility is highly advantageous for adapting to tunnel construction of different sizes. The flanges help disperse stress at the connection points, reducing stress concentration and improving structural durability. The flange structure provides a good foundation for sealing, helping to maintain internal pressure during tunnel boring machine operation and preventing the intrusion of soil, sand, and groundwater.

[0033] In some embodiments, the main drive mounting frame 1 includes a support ring 101 and a first connecting plate 102. The support ring 101 is coaxially arranged with the shield body 3. The first connecting plate 102 surrounds the outer peripheral surface of the support ring 101 in the circumferential direction and extends radially along the shield body 3. A second connecting plate 7 extending radially along the shield body 3 is provided on the inner wall surface of the front block 3011. The second connecting plate 7 is detachably connected to the first connecting plate 102.

[0034] The support ring 101 is coaxially arranged with the shield body 3, providing a stable support structure and helping to maintain overall stability during the tunnel boring machine (TBM) construction process. The first connecting plate 102 surrounds the support ring 101 circumferentially and extends radially along the shield body 3, and is separably connected to the second connecting plate 7 on the inner wall of the middle segment 3012. This design allows for quick and reliable connection and disconnection, facilitating the assembly and disassembly of the shield body 3. Due to the design of the connecting plates, the assembly of the TBM segment 301 becomes more modular and faster, reducing on-site construction time and improving efficiency. The separability of the first connecting plate 102 and the second connecting plate 7 makes the TBM more flexible in adjusting its diameter; by adding or removing connecting plates, it can quickly adapt to segments of different diameters. The structure of the first connecting plate 102 and the second connecting plate 7 helps to disperse stress at the connection points, reducing the risk of structural damage caused by stress concentration.

[0035] In some embodiments, the first connecting plate 102 is provided with a plurality of first connecting holes 1021, the plurality of first connecting holes 1021 are divided into a plurality of hole groups, the plurality of hole groups are arranged at intervals along the radial direction of the shield body 3, and the hole group includes a plurality of first connecting holes 1021 arranged at intervals along the circumference of the shield body 3. The second connecting plate 7 is provided with a plurality of second connecting holes 701 arranged at intervals along the circumference of the shield body 3. The first connecting plate 102 and the second connecting plate 7 are connected by a second bolt 8 passing through the first connecting holes 1021 and the second connecting holes 701.

[0036] The tunnel boring machine of this invention divides the first connecting hole 1021 into multiple hole groups and arranges them radially at intervals along the shield body 3, enabling various connection combinations and increasing the diversity and adaptability of the shield body 3's connections. The multiple hole groups arranged radially at intervals along the shield body 3 make the connections more precise, helping to ensure accurate docking of various parts of the shield body 3 and improving the overall structural stability. The design of the first connecting hole 1021 and the second connecting hole 701 allows for diameter adjustments by increasing or decreasing the number of second bolts 8, enabling the tunnel boring machine to quickly adapt to tunnels of different sizes.

[0037] In some embodiments, the first connecting plate 102 is provided with a first pin hole 1022, and the second connecting plate 7 is provided with a second pin hole 702. The first pin hole 1022 and the second pin hole 702 are connected by a pin. An annular sealing ring mounting groove 1023 is provided on the end face of the first connecting plate 102 adjacent to the second connecting plate 7, and an annular sealing ring 9 is provided in the sealing ring mounting groove 1023.

[0038] Pins typically possess high pull-out and shear strength, providing a more secure connection and preventing accidental breakage during construction. The annular sealing ring 9 effectively prevents soil, moisture, and other construction media from entering the connection area, ensuring the tunnel boring machine's sealing performance in underground environments and reducing the risk of seepage and leakage. The installation of the sealing ring increases the contact pressure on the connection surfaces, thereby enhancing the connection stability between the first connecting plate 102 and the second connecting plate 7. The sealing ring acts as a buffer, reducing direct contact and friction between connecting components and protecting the connection structure from damage. The mounting groove design makes the installation and replacement of the sealing ring simpler and more convenient, improving maintenance efficiency. The addition of the sealing ring helps extend the service life of the connecting components by reducing wear and corrosion.

[0039] In some other embodiments, the first connecting plate 102 and the second connecting plate 7 are connected by welding. The end face of the first connecting plate 102 away from the second connecting plate 7 is provided with a sealing plate, which is used to block the first connecting hole 1021 and the first pin hole 1022.

[0040] like Figure 6As shown, welding provides a very robust connection method capable of withstanding high loads during construction, ensuring the strength and durability of the connection. Welding eliminates the need for complex mechanical connection parts, simplifying structural design and reducing the number of components and potential failure points. The use of a sealing plate can block the first connection hole 1021 and the first pin hole 1022, preventing debris from entering the connection during construction and thus avoiding equipment failure or accidents caused by debris accumulation.

[0041] In some embodiments, a boss 103 is provided on the outer peripheral surface of the support ring 101, and the boss 103 is used to weld and connect with the partition plate 4.

[0042] like Figure 4 As shown, the boss 103 provides a larger welding area, making the welding between the support ring 101 and the partition plate 4 more stable and improving the overall strength of the connection. The welded connection between the boss 103 and the partition plate 4 increases the strength of the entire tunnel boring machine structure, enabling the tunnel boring machine to better withstand various loads during construction. The welded connection between the boss 103 and the partition plate 4 improves the durability of the connection part and extends the service life of the tunnel boring machine.

[0043] In some embodiments, a second flange 10 is provided on the inner wall of the middle block 3012, a third flange 11 is provided on the H-beam 2, at least one adjusting plate 12 is provided between the second flange 10 and the third flange 11, a second through hole is provided on the adjusting plate 12, and the second flange 10 and the third flange 11 are connected by a second bolt 8 passing through the second through hole.

[0044] When the shield body 3 of the tunnel boring machine in this embodiment of the invention changes diameter, the number of adjusting plates 12 can be increased or decreased accordingly. The space between the second flange 10 and the third flange 11 is filled according to the diameter change of the shield body 3, thereby improving the stability of the connection, helping to maintain the structural stability of the tunnel boring machine during the advancement process, and reducing the risk of loosening or failure of the connection during construction.

[0045] In some embodiments, the tunnel boring machine of the present invention further includes a propulsion cylinder 13, a mounting base 14, and an adjusting support 15. The mounting base 14 and the adjusting support 15 are spaced apart along the axial direction of the shield body 3 on the middle segment 3012, and the mounting base 14 is disposed adjacent to the front segment 3011. The radial position of each of the mounting base 14 and the adjusting support 15 is adjustable along the shield body 3. One end of the propulsion cylinder 13 is connected to the mounting base 14, and the middle part of the propulsion cylinder 13 is connected to the adjusting support 15.

[0046] like Figure 9As shown, the propulsion cylinder 13 is mounted on the segment 301. When the shield body 3 changes diameter, the propulsion cylinder 13 can move synchronously with the segment 301, eliminating the need for separate adjustment of the propulsion cylinder 13. This simplifies the diameter-changing operation of the tunnel boring machine (TBM) in this embodiment and improves the efficiency of diameter changing. As shown in the figure, the TBM in this embodiment, through the installation base 14 and adjusting support 15, can flexibly adjust the installation position and angle of the propulsion cylinder 13 to adapt to changes in tunnel diameter and geological conditions. The installation base 14 and adjusting support 15 are spaced apart along the axial direction of the shield body 3, allowing the TBM to adjust the layout of the propulsion system according to construction needs, enhancing its adaptability to different construction environments. Each support is adjustable radially along the shield body 3, meaning that the installation position of the propulsion cylinder 13 can be precisely controlled, ensuring uniform distribution of propulsion force and improving construction accuracy. Since one end of the propulsion cylinder 13 is connected to the mounting base 14 and the middle part is connected to the adjusting support 15, the radial position of the propulsion cylinder 13 can be easily changed by adjusting the support 15 without moving the mounting base 14. This design reduces the adjustment time of the tunnel boring machine during construction because it allows for rapid adjustments without completely dismantling the propulsion system.

[0047] In some embodiments, the central block 3012 is provided with a first mounting plate 16 and a second mounting plate 17 arranged radially upward along the shield body 3. The first mounting plate 16 is provided with a first clamping member 18, the first clamping member 18 being adjustable in radial position along the shield body 3. The second mounting plate 17 is provided with a second clamping member 19, the second clamping member 19 being adjustable in radial position along the shield body 3. The mounting base 14 is clamped between the first clamping member 18 and the second clamping member 19. The central block 3012 is also provided with a third mounting plate 20, the third mounting plate 20 being provided with a pushing member 21, the pushing member 21 being adjustable in radial position along the shield body 3, and the top end of the pushing member 21 abutting against the adjusting support 15.

[0048] like Figure 9 As shown, the clamping elements on the first mounting plate 16 and the second mounting plate 17 allow for radial adjustment of the position along the shield body 3. This makes the installation and positioning of the mounting base 14 highly flexible, adaptable to mounting bases 14 of different sizes and shapes. Due to the adjustability of the clamping elements, even if the size of the mounting base 14 changes, it can be adapted by adjusting the radial position of the clamping elements without replacing them. This design makes the installation and removal process of the mounting base 14 faster, as it does not require complex alignment operations; only the position of the clamping elements needs to be adjusted. Through the clamping of the first clamping element 18 and the second clamping element 19, the mounting base 14 receives stable support, enhancing stability during the tunnel boring machine's advance. The adjustability of the clamping elements allows maintenance personnel easy access to the mounting base 14 for necessary inspections and maintenance.

[0049] The jacking component 21 is radially adjustable along the shield body 3, allowing its force and position to be adjusted as needed during construction to adapt to different construction conditions. In emergency situations or sudden changes in geological conditions, the rapid adjustment capability of the jacking component 21 helps the tunnel boring machine (TBM) react quickly. The compact design of the jacking component 21 does not occupy excessive space, which is crucial for space-constrained equipment like the TBM.

[0050] Optionally, the first clamping member 18 is a first screw, which is threadedly connected to the first mounting plate 16. Alternatively, the first clamping member 18 may be a second screw, which is threadedly connected to the second mounting plate 17. The pushing member 21 may be a third screw, which is threadedly connected to the third mounting plate 20.

[0051] Threaded connections offer high flexibility, allowing for fine-tuning during installation and disassembly to suit various conditions. Threaded connections also provide high safety and reliability because the friction of the threads prevents accidental loosening of components. The position of the clamping or pushing member 21 can be easily adjusted by rotating the screw to accommodate different installation requirements or geological conditions.

[0052] In some embodiments, the shield body 3 includes four blocks 301, namely an upper block 301, a lower block 301, a left block 301, and a right block 301. The upper block 301 is provided with a man cabin transition chamber, and the lower block 301 is provided with a auger mounting base.

[0053] The personnel transition compartment provides operators with a safe working environment, facilitating personnel entry and exit and emergency escape. The design of the transition compartment allows operators to quickly switch between the inside and outside of the tunnel boring machine, improving construction efficiency. The auger mounting base provides a stable support platform for the auger, ensuring smooth and efficient excavation. The design of the auger mounting base facilitates the maintenance and replacement of the auger, reducing downtime.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are 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. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tunnel boring machine suitable for tunnel construction with various segment outer diameters, characterized in that, include: Main drive mounting bracket and H-beam; The shield body includes multiple blocks, which are spaced apart circumferentially along the shield body. Each block includes a front block and a middle block arranged axially along the shield body. The front block is detachably connected to the main drive mounting frame, and the middle block is detachably connected to the H-beam. A partition plate, which is detachably disposed between two adjacent blocks, and the number of the partition plates in the circumferential direction of the shield body is at least one; The main drive mounting frame includes a support ring and a first connecting plate. The support ring is coaxially arranged with the shield body. The first connecting plate surrounds the outer circumferential surface of the support ring along the circumference of the support ring. The first connecting plate extends radially along the shield body. The inner wall surface of the front segment is provided with a second connecting plate extending radially along the shield body. The second connecting plate is detachably connected to the first connecting plate. The first connecting plate is provided with a plurality of first connecting holes, which are divided into a plurality of hole groups. The plurality of hole groups are arranged radially at intervals along the shield body. Each hole group includes a plurality of first connecting holes arranged circumferentially at intervals along the shield body. The second connecting plate is provided with a plurality of second connecting holes arranged circumferentially at intervals along the shield body. The first connecting plate and the second connecting plate are connected by second bolts passing through the first connecting holes and the second connecting holes.

2. The tunnel boring machine applicable to tunnel construction with various segment outer diameters as described in claim 1, characterized in that, Both sides of the front section are provided with a first flange, and a first through hole is provided on the partition plate. The first flanges of two adjacent front sections are connected by a first bolt passing through the first through hole.

3. The tunnel boring machine applicable to tunnel construction with various segment outer diameters according to claim 1, characterized in that, The first connecting plate is provided with a first pin hole, and the second connecting plate is provided with a second pin hole. The first pin hole and the second pin hole are connected by a pin. An annular sealing ring mounting groove is provided on the end face of the first connecting plate adjacent to the second connecting plate, and an annular sealing ring is provided in the sealing ring mounting groove.

4. The tunnel boring machine applicable to tunnel construction with various segment outer diameters as described in claim 1, characterized in that, The outer circumferential surface of the support ring is provided with a boss, which is used to weld and connect with the partition plate.

5. The tunnel boring machine applicable to tunnel construction with various segment outer diameters according to claim 1, characterized in that, A second flange is provided on the inner wall of the middle section, and a third flange is provided on the H-beam. At least one adjusting plate is provided between the second flange and the third flange. A second through hole is provided on the adjusting plate. The second flange and the third flange are connected by a second bolt passing through the second through hole.

6. The tunnel boring machine applicable to tunnel construction with various segment outer diameters according to claim 1, characterized in that, It also includes a propulsion cylinder, a mounting base, and an adjustment support. The mounting base and the adjustment support are spaced apart along the axial direction of the shield body on the middle block, and the mounting base is located adjacent to the front block. The position of each of the mounting base and the adjustment support is adjustable along the radial direction of the shield body. One end of the propulsion cylinder is connected to the mounting base, and the middle part of the propulsion cylinder is connected to the adjustment support.

7. The tunnel boring machine applicable to tunnel construction with various segment outer diameters according to claim 6, characterized in that, The middle section is provided with a first mounting plate and a second mounting plate arranged radially upward along the shield body. The first mounting plate is provided with a first clamping member, which is adjustable in the radial direction along the shield body. The second mounting plate is provided with a second clamping member, which is also adjustable in the radial direction along the shield body. The mounting base is clamped between the first clamping member and the second clamping member. The middle section is also provided with a third mounting plate, which is provided with a pushing member. The pushing member is adjustable in the radial direction along the shield body, and the top end of the pushing member abuts against the adjusting support.

8. The tunnel boring machine applicable to tunnel construction with various segment outer diameters according to claim 1, characterized in that, The shield body comprises four sections: an upper section, a lower section, a left section, and a right section. The upper section is equipped with a personnel cabin transition chamber, and the lower section is equipped with a propeller mounting base.

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