A steel sleeve for shield sealing launching and a method of using the same

Abstract

The application provides a steel sleeve for shield closed launching and a use method thereof, and belongs to the technical field of shield machines, which comprises a base, a plurality of lower steel sleeves, a stop plate, a sealing box and a sealing mechanism. The stop plate is arranged on the upper side of the base, and the side end of the stop plate is provided with a counterweight mechanism. The sealing box is fixedly connected to the top of the base and corresponds to the plurality of lower steel sleeves. The sealing box is provided with the sealing mechanism. Two connecting rods drive a plurality of driving rods, which pull a plurality of connecting blocks to deflect. Finally, the plurality of upper steel sleeves are flipped around two hinge shafts as the axis, so that the plurality of upper steel sleeves are symmetrically unfolded. Through the unfoldability of the plurality of upper steel sleeves, the shield machine can be conveniently hoisted and assembled in the steel sleeve. The volume of the launching end required by the tunnel is reduced, the excavation amount is reduced, the supporting construction facilities are reduced, the construction site occupied by the launching end is reduced, the construction period is shortened, and the application range of the shield machine is improved.

Description

Technical Field

[0001] This invention belongs to the field of tunnel boring machine technology, specifically relating to a sealed steel sleeve for tunnel boring machine launch and its usage method. Background Technology

[0002] Tunnel boring machines (TBMs) are generally classified according to their working principles into manual TBMs, extrusion TBMs, semi-mechanized TBMs (local pneumatic, global pneumatic), and mechanical TBMs (open-chest cutting TBMs, pneumatic TBMs, slurry pressurized TBMs, earth pressure balance TBMs, hybrid TBMs, and irregular-shaped TBMs). A TBM is a specialized engineering machine for tunnel excavation. Modern TBMs integrate optics, mechanics, electronics, hydraulics, sensing, and information technology, possessing functions such as excavating and cutting soil, transporting excavated material, assembling tunnel lining, and measuring and guiding. They involve multiple disciplines including geology, civil engineering, mechanics, hydraulics, electrical engineering, control, and surveying. Furthermore, they require customized design and manufacturing based on different geological conditions, demanding extremely high reliability. TBMs are widely used in subway, railway, highway, municipal, and hydropower tunnel projects.

[0003] The steel sleeve is the most important equipment for the launching and receiving of tunnel boring machines. It is used to keep the soil and water balanced on the launching or receiving side during the launching and receiving of the tunnel boring machine. Its importance is self-evident.

[0004] The authorized publication number "CN108868786B" describes "a novel steel sleeve for sealed launching and receiving and its hydraulic system. By optimizing the segmentation of the steel sleeve, adding an information-based hydraulic system and a sensing system, it achieves refined and information-based operation of sealed launching, and the segmentation is more reasonable. The installation of the tunnel boring machine inside the steel sleeve, the filling inside the steel sleeve, and the installation and dismantling of the steel sleeve are more convenient and efficient. It solves the problems of traditional steel sleeves, such as poor consideration of construction convenience and efficiency, low information level of hydraulic system and sensor, inability to finely coordinate, and insufficient consideration of the specific needs of tunnel boring machine launching. The invention has a simple structure, is easy to assemble and disassemble, has a short construction cycle, and can be reused. At the same time, the invention has made a specific design for sealed launching of tunnel boring machines, which improves construction efficiency, saves construction costs, and reduces construction risks, and has great promotional value."

[0005] The aforementioned patents can effectively improve the convenience and practicality of shield tunneling steel sleeve launch by optimizing the segmentation, shorten the construction cycle, and improve construction efficiency. At the same time, the use of sensors and hydraulic systems can more accurately control the steel sleeve, which has great promotional value. However, the existing steel sleeves are spliced ​​by welding process. When used at the launch end, the steel sleeve is usually welded and installed first, and then the assembled shield head is moved into the steel sleeve. This requires the excavation of a larger volume tunnel and the construction of larger supporting facilities at the launch end, which increases the construction site occupied at the launch end, prolongs the construction cycle, and limits the scope of use of the shield machine. Therefore, we propose a sealed steel sleeve for shield tunneling launch and its usage method. Summary of the Invention

[0006] The purpose of this invention is to provide a sealed steel sleeve for shield tunneling starting and its usage method. The aim is to solve the problem that existing steel sleeves are spliced ​​by welding process. When used at the starting end, the steel sleeve is usually welded and installed first, and then the assembled shield machine head is moved into the steel sleeve. This requires the excavation of a larger volume tunnel and the construction of larger supporting facilities at the starting end, which increases the construction site occupied at the starting end, prolongs the construction period, and limits the scope of use of the shield machine.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A sealed steel sleeve for shield tunneling machine launching, including a base;

[0009] The lower steel cylinder is provided in multiple ways, and the multiple lower steel cylinders are fixed to the top of the base by a base;

[0010] A backing plate is provided on the upper side of the base, and a counterweight mechanism is provided on the side end of the backing plate;

[0011] A sealing box is fixedly connected to the top of the base. The sealing box corresponds to multiple lower steel cylinders, and a sealing mechanism is provided inside the sealing box.

[0012] An upper steel cylinder, wherein multiple upper steel cylinders are provided, and the multiple upper steel cylinders are rotatably connected to the upper side of multiple lower steel cylinders via two connecting rods; and

[0013] The linkage mechanism is provided in two sets, which are located on the side of the sealing block and connected to multiple upper steel cylinders for rotating the multiple upper steel cylinders.

[0014] In a preferred embodiment of the present invention, the base includes a stabilizing block, a receiving groove, rails, a main slot, an auxiliary support block, an insert block, a chisel, an auxiliary slot, a docking block, and an insert. The stabilizing block is fixedly connected to the top of the base by bolts. Two auxiliary support blocks are provided and fixedly connected to the top of the base by bolts. The two auxiliary support blocks are located on both sides of the stabilizing block. The trapezoidal block is fixedly connected to the side end of the stabilizing block. The receiving groove is formed on the top of the stabilizing block. Multiple rails are provided and fixedly connected to the inner part of the receiving groove. Between the walls, there are two grooves, which are formed between the inner walls of the two auxiliary support blocks. There are two drill rods, which are formed between the inner walls of the two grooves and penetrate the sealing block. There are multiple docking blocks, which are fitted onto the circumferential surfaces of the two drill rods and are connected to multiple lower steel cylinders. The main slot is formed on the top of the stabilizing block. There are two auxiliary slots, which are formed between the inner walls of the two auxiliary support blocks and correspond to the main slot.

[0015] In a preferred embodiment of the present invention, the sealing mechanism includes a semi-circular sealing plate, a sealing ring, a limiting groove, a limiting block, and a sealing air cylinder. Two semi-circular sealing plates are provided, sliding between the inner walls of the sealing box. Multiple limiting grooves are provided, formed on the inner wall of the sealing box. Multiple limiting blocks are provided, sliding between the inner walls of the multiple limiting grooves. Each limiting block is connected to one of the two semi-circular sealing plates. The sealing ring is fixedly connected to the side end of the sealing box. Multiple sealing air cylinders are provided, fixedly installed on the side end of the sealing box, with their output ends extending into the sealing box. Each sealing air cylinder is connected to one of the two semi-circular sealing plates.

[0016] As a preferred embodiment of the present invention, each set of the linkage mechanism includes a connecting rod assembly and a limiting assembly. The connecting rod assembly is disposed at the side end of the sealing block and is connected to multiple upper steel cylinders. The limiting assembly is disposed at the side end of the sealing box and is connected to the connecting rod assembly.

[0017] In a preferred embodiment of the present invention, the linkage assembly includes a connecting block, a hinge rod, a lever, an electric push rod, a transition block, a first transition rod, a second transition rod, and an L-shaped connecting rod. Multiple connecting blocks are provided, and these connecting blocks are fixedly connected to the circumferential surfaces of multiple upper steel cylinders. The electric push rod is fixedly connected to the side end of the abutment plate. The transition block is fixedly connected to the output end of the electric push rod. The L-shaped connecting rod is rotatably connected to the side end of the abutment plate. The linkage rod is fixedly connected to one end of the L-shaped connecting rod. Multiple levers are provided, and these levers are fixedly connected to the circumferential surface of the linkage rod. The multiple levers and the multiple connecting blocks are rotatably connected via hinges. The other end of the L-shaped connecting rod is rotatably connected to a second transition rod. A first transition rod is rotatably connected between the inner walls of the transition blocks, and the first transition rod and the second transition rod are rotatably connected via hinges.

[0018] In a preferred embodiment of the present invention, the limiting component includes an arc-shaped guide rail and a guide block. The arc-shaped guide rail is fixedly connected to the inner wall of the sealed box and to the side end of the linkage rod. The linkage rod slides between the inner walls of the arc-shaped guide rail.

[0019] In a preferred embodiment of the present invention, the support platform is connected to the support plate, and the water tank is installed and fixed on the top of the support platform.

[0020] In a preferred embodiment of the present invention, two supporting arc plates are fixedly connected to the side end of the abutment plate.

[0021] As a preferred embodiment of the present invention, a sealing block is fixedly filled in the gap between the abutment plate, the two connecting blocks, and the upper steel cylinder.

[0022] A method for using a sealed steel sleeve for shield tunneling launch includes the following steps:

[0023] S1, Expand:

[0024] Two electric push rods are activated, which in turn push two adapter blocks. These adapter blocks then push two first adapter rods, which in turn push two second adapter rods, making the two second adapter rods 90° to the two first adapter rods. The two second adapter rods then push two L-shaped connecting rods to rotate. These L-shaped connecting rods then drive two connecting rods to deflect, which in turn drive multiple actuating rods. These actuating rods then pull multiple connecting blocks to deflect, ultimately causing the multiple upper steel cylinders to flip around the two hinge rods as axes, resulting in the multiple upper steel cylinders unfolding symmetrically.

[0025] S2, Feed Adjustment:

[0026] After assembling the shield machine parts between multiple docking blocks and the upper steel cylinder, the shield machine is started and slid on multiple rails to control the distance between the shield machine and the inner wall of the deep trench, thus completing the feed adjustment.

[0027] S3, Isolation and Sealing:

[0028] When the tunnel boring machine moves to a fixed distance from the inner wall of the deep trench, multiple sealing air cylinders are activated. Under the push of the multiple sealing air cylinders, two semi-circular sealing plates approach the circumferential surface of the tunnel boring machine, isolating the working end of the tunnel boring machine to prevent dust from overflowing during the operation of the tunnel boring machine, reducing the dust in the deep trench, and achieving isolation and sealing of the tunnel boring machine.

[0029] S4. Water injection construction:

[0030] The water tank is filled with water, which then counterweights the support plate. The support plate provides structural support for the tunnel boring machine's (TBM) advance and excavation, facilitating the initial advance of the TBM and enabling water-filled construction.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] In this scheme, when two electric push rods are activated, they push two transition blocks, which in turn push two first transition rods. These first transition rods then push two second transition rods, creating a 90° angle between the second and first transition rods. The second transition rods then push two L-shaped connecting rods to rotate, which in turn drive two connecting rods to deflect. These connecting rods then drive multiple actuating rods, which in turn pull multiple connecting blocks to deflect. Ultimately, this causes the upper steel cylinders to rotate around the two hinged shafts, allowing them to unfold symmetrically. This unfoldability of the upper steel cylinders facilitates the hoisting and assembly of the tunnel boring machine (TBM) within the cylinders, reducing the required tunnel volume at the starting point, decreasing excavation volume, reducing the need for supporting construction facilities, minimizing the occupation of the construction site at the starting point, shortening the construction cycle, and simultaneously expanding the applicability of the TBM.

[0033] In this scheme, when multiple upper steel cylinders are symmetrically sealed, the multiple upper steel cylinders, multiple lower steel cylinders, and stabilizing blocks form the main body of the steel cylinder, which isolates the tunnel boring machine and reduces the interference of various external factors on the construction of the tunnel boring machine.

[0034] In this design, two semi-circular sealing plates clamp the outer surface of the tunnel boring machine (TBM) by being brought close together, preventing dust from spilling out during the TBM's feeding operation. Multiple limiting grooves are provided to accommodate the sliding of multiple limiting blocks. These limiting blocks, through sliding cooperation with the limiting grooves, limit one end of the two semi-circular sealing plates. Multiple sealing pneumatic cylinders are used to push and pull the two semi-circular sealing plates. When the TBM is feeding, the multiple sealing pneumatic cylinders are activated, and their outputs push the two semi-circular sealing plates closer together. By bringing the two semi-circular sealing plates close to the TBM, the working end of the TBM is isolated, preventing dust from spilling out during operation, reducing dust in the deep trench, achieving isolation and sealing of the TBM, reducing dust at the starting end, and minimizing air pollution at the starting end.

[0035] In this scheme, during the assembly of the base, the stabilizing block is first fixed to the top of the base with bolts, then the two auxiliary support blocks are fixed to the top of the base with bolts, and multiple docking blocks are inserted into the two slots so that the multiple inserts and multiple docking blocks are staggered. Then the abutment plate is inserted into the main slot and the two auxiliary slots, and two drill rods are inserted through the abutment plate, multiple inserts and docking blocks in sequence to fix multiple lower steel cylinders. The multiple lower steel cylinders are fixed through the two drill rods, multiple docking blocks and inserts to ensure the smooth movement of the tunnel boring machine during the movement.

[0036] In this design, two supporting arc plates are used to provide auxiliary support for the two lower steel cylinders, facilitating quick positioning during assembly and providing auxiliary support for the two lower steel cylinders. Attached Figure Description

[0037] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0038] Figure 1 This is a first-view perspective perspective view of a steel sleeve for the sealed launch of a tunnel boring machine according to the present invention.

[0039] Figure 2 This is a second-view perspective perspective view of a steel sleeve for sealed launching of a tunnel boring machine according to the present invention;

[0040] Figure 3 This is a first half-sectional view of a steel sleeve for sealed launching of a tunnel boring machine according to the present invention;

[0041] Figure 4 This is a second half sectional view of a steel sleeve for sealed launching of a tunnel boring machine according to the present invention;

[0042] Figure 5 This is an exploded view of a sealed steel sleeve for shield tunneling starting according to the present invention;

[0043] Figure 6The present invention relates to a linkage mechanism for a sealed steel sleeve for shield tunneling launch;

[0044] Figure 7 This is an exploded view of the linkage mechanism of a shield tunneling sealed starting steel sleeve according to the present invention;

[0045] Figure 8 This invention relates to a steel sleeve for sealed launching of a tunnel boring machine. Figure 7 Enlarged view of point A;

[0046] Figure 9 This is an exploded view of a support assembly for a sealed steel sleeve used for shield tunneling launch according to the present invention.

[0047] Figure 10 This is an exploded view of the sealing mechanism of a steel sleeve for the sealed launch of a tunnel boring machine according to the present invention;

[0048] Figure 11 This is an exploded view of the counterweight mechanism of a steel sleeve for sealed shield tunneling starting according to the present invention.

[0049] In the diagram: 1. Base; 2. Stabilizing block; 3. Receiving groove; 4. Track bar; 5. Main slot; 6. Auxiliary support block; 7. Insert block; 8. Chisel rod; 9. Auxiliary slot; 10. Lower steel cylinder; 11. Connecting block; 12. Upper steel cylinder; 13. Connecting block; 14. Sealing block; 15. Hinge rod; 16. Actuating rod; 17. Support plate; 18. Support arc plate; 19. Electric push rod; 20. Adapter block; 21. First adapter rod; 22. Second adapter rod; 23. L-shaped connecting rod; 24. Support platform; 25. Water tank; 26. Sealing box; 27. Semi-circular sealing plate; 28. Sealing ring; 29. ​​Limiting groove; 30. Limiting block; 31. Sealing air cylinder; 32. Trapezoidal block; 33. Linking rod; 34. Insert groove; 35. Arc-shaped guide rail; 36. Guide block. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0051] Reference Figure 1 - Figure 11 A sealed steel sleeve for shield tunneling starting, comprising:

[0052] Base 1;

[0053] The lower steel cylinder 10 is provided in multiple ways, and the multiple lower steel cylinders 10 are fixed to the top of the base 1 by the base;

[0054] A counterweight 17 is provided on the upper side of the base 1, and a counterweight mechanism is provided on the side end of the counterweight 17.

[0055] The sealing box 26 is fixedly connected to the top of the base 1. The sealing box 26 corresponds to multiple lower steel cylinders 10. A sealing mechanism is provided inside the sealing box 26.

[0056] Multiple upper steel cylinders 12 are provided, and the multiple upper steel cylinders 12 are rotatably connected to the upper side of multiple lower steel cylinders 10 via two connecting rods 33; and

[0057] The linkage mechanism consists of two sets, which are located on the side of the sealing block 14. The two sets of linkage mechanisms are connected to multiple upper steel cylinders 12 to rotate the multiple upper steel cylinders 12.

[0058] In this invention, the base 1 is used to support and fix the stabilizing block 2, the trapezoidal block 32, the sealing box 26, and two auxiliary support blocks 6. The multiple lower steel cylinders 10 are used to support and fix the multiple upper steel cylinders 12 through two hinge rods 15. The base is used to support and fix the abutment plate 17 and the multiple lower steel cylinders 10. The abutment plate 17 is used to support and fix two sets of linkage mechanisms. The counterweight mechanism is used to provide feed support points for the movement of the tunnel boring machine. The sealing box 26 is used to house the sealing mechanism. The sealing mechanism is used to isolate part of the main body of the tunnel boring machine. The multiple upper steel cylinders 12 are used to seal the top of the multiple lower steel cylinders 10. The two sets of linkage mechanisms are set on the side of the sealing block 14 and are connected to the multiple upper steel cylinders 12 to rotate the multiple upper steel cylinders 12.

[0059] The base includes a stabilizing block 2, a receiving groove 3, track bars 4, a main slot 5, auxiliary support blocks 6, insert blocks 7, a chisel 8, auxiliary slots 9, a connecting block 11, and an insert groove 34. The stabilizing block 2 is fixedly connected to the top of the base 1 by bolts. Two auxiliary support blocks 6 are provided, and the two auxiliary support blocks 6 are fixedly connected to the top of the base 1 by bolts. The two auxiliary support blocks 6 are located on both sides of the stabilizing block 2. A trapezoidal block 32 is fixedly connected to the side end of the stabilizing block 2. The receiving groove 3 is opened on the top of the stabilizing block 2. Multiple track bars 4 are provided, and multiple track bars 4 are fixedly connected between the inner walls of the receiving groove 3. There are two slots 34, which are located between the inner walls of the two auxiliary support blocks 6. There are two drill rods 8, which are located between the inner walls of the two slots 34 and pass through the sealing block 14. There are multiple docking blocks 11, which are fitted onto the circumferential surfaces of the two drill rods 8 and are connected to multiple lower steel cylinders 10. The main slot 5 is located on the top of the stabilizing block 2. There are two auxiliary slots 9, which are located between the inner walls of the two auxiliary support blocks 6 and correspond to the main slot 5.

[0060] In this invention, the stabilizing block 2 is used to support and fix the abutment plate 17. Two auxiliary support blocks 6 cooperate with the stabilizing block 2 to support multiple lower steel cylinders 10. The trapezoidal block 32 is used to support the sealing box 26. The receiving groove 3 is opened to accommodate and fix multiple track bars 4, which support the movement of the tunnel boring machine. The two slots 34 are opened to accommodate multiple inserts 7 and docking blocks 11. Two drill rods 8 are used to penetrate and fix the abutment plate 17, multiple inserts 7, and multiple docking blocks 11, thereby fixing the abutment plate 17 and multiple lower steel cylinders 10. The multiple docking blocks 11 and multiple inserts 7 are connected and fixed by the two drill rods 8. The main slot 5 and the two auxiliary slots are also included. The opening 9 is used to accommodate the insertion of the abutment plate 17. During the assembly of the base, the stabilizing block 2 is first fixed to the top of the base 1 with bolts, and then the two auxiliary support blocks 6 are fixed to the top of the base 1 with bolts. Multiple docking blocks 11 are inserted into the two slots 34, so that multiple inserts 7 and multiple docking blocks 11 are staggered. Then the abutment plate 17 is inserted into the main slot 5 and the two auxiliary slots 9. Two drill rods 8 are inserted through the abutment plate 17, multiple inserts 7 and docking blocks 11 in sequence to fix multiple lower steel cylinders 10. Multiple lower steel cylinders 10 are fixed through the penetration between the two drill rods 8, multiple docking blocks 11 and inserts 7 to ensure smooth movement during the movement of the tunnel boring machine.

[0061] The sealing mechanism includes a semi-circular sealing plate 27, a sealing ring 28, a limiting groove 29, a limiting block 30, and a sealing air cylinder 31. Two semi-circular sealing plates 27 are provided, and the two semi-circular sealing plates 27 slide between the inner walls of the sealing box 26. Multiple limiting grooves 29 are provided, and multiple limiting grooves 29 are formed on the inner wall of the sealing box 26. Multiple limiting blocks 30 are provided, and multiple limiting blocks 30 slide between the inner walls of multiple limiting grooves 29. The limiting blocks 30 are connected to the two semi-circular sealing plates 27. The sealing ring 28 is fixedly connected to the side end of the sealing box 26. Multiple sealing air cylinders 31 are provided, and multiple sealing air cylinders 31 are installed and fixedly connected to the side end of the sealing box 26. The output ends of multiple sealing air cylinders 31 extend into the sealing box 26. Multiple sealing air cylinders 31 are connected to the two semi-circular sealing plates 27.

[0062] In this invention, two semi-circular sealing plates 27 clamp the outer surface of the tunnel boring machine (TBM) by being close together, preventing dust from spilling out during the TBM's feeding operation. Multiple limiting grooves 29 are provided to accommodate the sliding of multiple limiting blocks 30. The multiple limiting blocks 30, through sliding cooperation with the multiple limiting grooves 29, limit one end of the two semi-circular sealing plates 27. Multiple sealing air cylinders 31 are used to push and pull the two semi-circular sealing plates 27. When the TBM is feeding, the multiple sealing air cylinders 31 are activated, and the output ends of the multiple sealing air cylinders 31 push the two semi-circular sealing plates 27 closer together. By bringing the two semi-circular sealing plates 27 close to the TBM, the working end of the TBM is isolated, preventing dust from spilling out during the TBM's operation, reducing dust in the deep trench, achieving isolation and sealing of the TBM, reducing the amount of dust at the starting end, and reducing air pollution at the starting end.

[0063] Each linkage mechanism includes a linkage assembly and a limit assembly. The linkage assembly is located at the side end of the sealing block 14 and is connected to multiple upper steel cylinders 12. The limit assembly is located at the side end of the sealing box 26 and is connected to the linkage assembly.

[0064] In this invention, the connecting rod assembly is used to flip the plurality of upper steel cylinders 12, and the limiting assembly is used to limit and guide the flipping of the plurality of upper steel cylinders 12.

[0065] The linkage assembly includes a connecting block 13, a hinge rod 15, a lever 16, an electric push rod 19, an adapter block 20, a first adapter rod 21, a second adapter rod 22, and an L-shaped connecting rod 23. Multiple connecting blocks 13 are provided, and these blocks are fixedly connected to the circumferential surfaces of multiple upper steel cylinders 12. The electric push rod 19 is fixedly connected to the side end of the abutment plate 17. The adapter block 20 is fixedly connected to the output end of the electric push rod 19. The L-shaped connecting rod 23 is rotatably connected to the side of the abutment plate 17. At one end, the connecting rod 33 is fixedly connected to one end of the L-shaped connecting rod 23. Multiple actuating rods 16 are provided, and multiple actuating rods 16 are fixedly connected to the circumferential surface of the connecting rod 33. The multiple actuating rods 16 are rotatably connected to multiple connecting blocks 13 through hinges. The other end of the L-shaped connecting rod 23 is rotatably connected to a second adapter rod 22. A first adapter rod 21 is rotatably connected between the inner walls of the adapter blocks 20. The first adapter rod 21 and the second adapter rod 22 are rotatably connected through hinges.

[0066] In this invention, in a single linkage assembly, multiple connecting blocks 13 are used to drive multiple upper steel cylinders 12 to rotate; an electric push rod 19 is used to push the lifting and lowering of the adapter block 20; the adapter block 20 is used to push and pull the movement of the first adapter rod 21; the first adapter rod 21 is used to push and pull the second adapter rod 22 to move; the second adapter rod 22 is used to pull the L-shaped connecting rod 23 to rotate; the L-shaped connecting rod 23 rotates to move the connecting rod 33 in an arc; and the connecting rod 33 drives multiple actuating rods 16 to move. When multiple actuating levers 16 are rotatably connected to multiple connecting blocks 13 via hinges, multiple upper steel cylinders 12 rotate about the connecting rod 33. In the two sets of connecting rod assemblies, when the two electric push rods 19 are activated, the two electric push rods 19 push the two transition blocks 20, the two transition blocks 20 push the two first transition rods 21, and the two first transition rods 21 push the two second transition rods 22, so that the two second transition rods 22 are at a 90° angle to the two first transition rods 21. The adapter rod 22 pushes two L-shaped connecting rods 23 to rotate. The two L-shaped connecting rods 23 drive two connecting rods 33 to deflect. The two connecting rods 33 drive multiple actuating rods 16. The multiple actuating rods 16 pull multiple connecting blocks 13 to deflect, ultimately causing multiple upper steel cylinders 12 to rotate around the two hinge rods 15 as axes. This allows the multiple upper steel cylinders 12 to unfold symmetrically. The symmetrical unfolding of the multiple upper steel cylinders 12 facilitates the opening of the top of the steel cylinders, making it easier to hoist and assemble the tunnel boring machine. Meanwhile, when multiple upper steel cylinders 12 are symmetrically sealed, the multiple upper steel cylinders 12, together with multiple lower steel cylinders 10 and stabilizing blocks 2, form the main body of the steel cylinder, which isolates the tunnel boring machine and reduces the interference of various external factors on the construction of the tunnel boring machine. Through the deployability of multiple upper steel cylinders 12, it is possible to conveniently hoist and assemble the tunnel boring machine inside the steel cylinder, reduce the required tunnel volume at the starting end, reduce the amount of excavation, reduce the supporting construction facilities, reduce the occupation of the construction site at the starting end, shorten the construction cycle, and at the same time improve the applicability of the tunnel boring machine.

[0067] The limiting component includes an arc-shaped guide rail 35 and a guide block 36. The arc-shaped guide rail 35 is fixedly connected to the inner wall of the sealed box 26 and is fixedly connected to the side end of the linkage rod 33. The linkage rod 33 slides between the inner walls of the arc-shaped guide rail 35.

[0068] In this invention, the arc-shaped guide rail 35 is installed to accommodate the sliding of the guide block 36. The guide block 36 slides within the arc-shaped guide rail 35. Through the sliding cooperation between the arc-shaped guide rail 35 and the guide block 36, the movement of the connecting rod 33 is limited in an arc shape. At the same time, the connecting rod 33 is provided with auxiliary support to avoid the weight of the multiple upper steel cylinders 12 from exerting force on the connecting rod 33 and to reduce the deformation of the connecting rod 33.

[0069] The baffle 24 is connected to the baffle plate 17, and the water tank 25 is installed and fixed on the top of the baffle 24.

[0070] In this invention, the support platform 24 is used to support and fix the water tank 25, which is used to hold water. When the water tank 25 is filled with water, the water tank 25 counterweights the support plate 17 by injecting water, and the support plate 17 provides force support for the tunnel boring machine's feeding and excavation, which facilitates the initial feeding operation of the tunnel boring machine.

[0071] Two supporting arc plates 18 are fixedly connected to the side end of the abutment plate 17.

[0072] In this invention, two supporting arc plates 18 are used to provide auxiliary support for the two lower steel cylinders 10, which facilitates quick positioning during the assembly of the two lower steel cylinders 10, and at the same time provides auxiliary support for the two lower steel cylinders 10.

[0073] A sealing block 14 is fixedly filled in the gap between the abutment plate 17, the two connecting blocks 11, and the upper steel cylinder 12.

[0074] In this invention, the sealing block 14 is used to fill the gap between the abutment plate 17 and the two connecting blocks 11 and the upper steel cylinder 12, ensuring that the gap between the abutment plate 17 and the two connecting blocks 11 and the upper steel cylinder 12 is in a sealed state.

[0075] A method for using a sealed steel sleeve for shield tunneling launch includes the following steps:

[0076] S1, Expand:

[0077] Two electric push rods 19 are activated, which push two adapter blocks 20. The two adapter blocks 20 push two first adapter rods 21, and the two first adapter rods 21 push two second adapter rods 22, making the two second adapter rods 22 form a 90° angle with the two first adapter rods 21. The two second adapter rods 22 push two L-shaped connecting rods 23 to rotate, and the two L-shaped connecting rods 23 drive two connecting rods 33 to deflect. The two connecting rods 33 drive multiple actuating rods 16, and the multiple actuating rods 16 pull multiple connecting blocks 13 to deflect. Finally, the multiple upper steel cylinders 12 are rotated around the two hinge rods 15 as the axis, so that the multiple upper steel cylinders 12 are symmetrically unfolded.

[0078] S2, Feed Adjustment:

[0079] After assembling the shield machine parts between multiple docking blocks 11 and the upper steel cylinder 12, the shield machine is started and slid on multiple rails 4 to control the distance between the shield machine and the inner wall of the deep trench, thus completing the feed adjustment.

[0080] S3, Isolation and Sealing:

[0081] When the tunnel boring machine moves to a fixed distance from the inner wall of the deep trench, multiple sealing air cylinders 31 are activated. Under the push of the multiple sealing air cylinders 31, two semi-circular sealing plates 27 approach the circumferential surface of the tunnel boring machine, isolate the working end of the tunnel boring machine, prevent dust from overflowing during the operation of the tunnel boring machine, reduce the dust in the deep trench, and achieve isolation and sealing of the tunnel boring machine.

[0082] S4. Water injection construction:

[0083] Water tank 25 is filled with water, and the water tank 25 counterweights the support plate 17 through water injection. The support plate 17 provides force support for the tunnel boring machine's feeding and excavation, facilitating the initial feeding operation of the tunnel boring machine and realizing water injection construction.

[0084] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealed steel sleeve for shield tunneling launch, characterized in that, include; Base (1); Lower steel cylinder (10), multiple lower steel cylinders (10) are provided, and multiple lower steel cylinders (10) are fixed to the top of the base (1) by a base; A counterweight (17) is provided on the upper side of the base (1), and a counterweight mechanism is provided on the side end of the counterweight (17). A sealing box (26) is fixedly connected to the top of the base (1). The sealing box (26) corresponds to a plurality of lower steel cylinders (10). A sealing mechanism is provided inside the sealing box (26). Upper steel cylinder (12), multiple upper steel cylinders (12) are provided, and multiple upper steel cylinders (12) are rotatably connected to the upper side of multiple lower steel cylinders (10) through two connecting rods (33); as well as The linkage mechanism is provided in two sets. The two sets of linkage mechanisms are located on the side of the sealing block (14). The two sets of linkage mechanisms are connected to multiple upper steel cylinders (12) to rotate the multiple upper steel cylinders (12). Each of the linkage mechanisms includes a linkage assembly and a limiting assembly. The linkage assembly is located at the side end of the sealing block (14) and is connected to multiple upper steel cylinders (12). The limiting assembly is located at the side end of the sealing box (26) and is connected to the linkage assembly. The linkage assembly includes a connecting block (13), a hinge rod (15), a lever (16), an electric push rod (19), a transition block (20), a first transition rod (21), a second transition rod (22), and an L-shaped connecting rod (23). Multiple connecting blocks (13) are provided, and multiple connecting blocks (13) are fixedly connected to the circumferential surfaces of multiple upper steel cylinders (12). The electric push rod (19) is fixedly connected to the side end of the abutment plate (17). The transition block (20) is fixedly connected to the output end of the electric push rod (19). The L-shaped connecting rod (23) is rotatably connected to the abutment plate (17). The connecting rod (33) is fixedly connected to one end of the L-shaped connecting rod (23). Multiple actuating rods (16) are provided. Multiple actuating rods (16) are fixedly connected to the circumferential surface of the connecting rod (33). Multiple actuating rods (16) are rotatably connected to multiple connecting blocks (13) through hinges. The other end of the L-shaped connecting rod (23) is rotatably connected to a second adapter rod (22). A first adapter rod (21) is rotatably connected between the inner walls of the adapter blocks (20). The first adapter rod (21) and the second adapter rod (22) are rotatably connected through hinges. The limiting component includes an arc-shaped guide rail (35) and a guide block (36). The arc-shaped guide rail (35) is fixedly connected to the inner wall of the sealed box (26). The arc-shaped guide rail (35) is fixedly connected to the side end of the linkage rod (33). The linkage rod (33) slides between the inner walls of the arc-shaped guide rail (35).

2. The steel sleeve for sealed launching of a tunnel boring machine according to claim 1, characterized in that, The base includes a stabilizing block (2), a receiving groove (3), a track bar (4), a main slot (5), an auxiliary support block (6), an insert block (7), a chisel (8), an auxiliary slot (9), a docking block (11), a trapezoidal block (32), and a slot (34). The stabilizing block (2) is fixedly connected to the top of the base (1) by bolts. There are two auxiliary support blocks (6), which are fixedly connected to the top of the base (1) by bolts. The two auxiliary support blocks (6) are located on both sides of the stabilizing block (2). The trapezoidal block (32) is fixedly connected to the side end of the stabilizing block (2). The receiving groove (3) is opened on the top of the stabilizing block (2). There are multiple track bars (4), which are fixedly connected to the receiving groove (3). Between the inner walls, there are two grooves (34), which are opened between the inner walls of the two auxiliary blocks (6). There are two drill rods (8), which are opened between the inner walls of the two grooves (34) and penetrate the sealing block (14). There are multiple docking blocks (11), which are fitted on the circumferential surface of the two drill rods (8) and are connected to multiple lower steel cylinders (10). The main slot (5) is opened on the top of the stabilizing block (2). There are two auxiliary slots (9), which are opened between the inner walls of the two auxiliary blocks (6) and correspond to the main slot (5).

3. A sealed steel sleeve for shield tunneling launch according to claim 2, characterized in that, The sealing mechanism includes a semi-circular sealing plate (27), a sealing ring (28), a limiting groove (29), a limiting block (30), and a sealing air cylinder (31). Two semi-circular sealing plates (27) are provided, and the two semi-circular sealing plates (27) slide between the inner walls of the sealing box (26). Multiple limiting grooves (29) are provided, and multiple limiting grooves (29) are formed on the inner wall of the sealing box (26). Multiple limiting blocks (30) are provided, and multiple limiting blocks (30) slide between multiple... Between the inner walls of the limiting groove (29), the limiting block (30) is connected to two semi-circular sealing plates (27), the sealing ring (28) is fixedly connected to the side end of the sealing box (26), and multiple sealing air cylinders (31) are provided. Multiple sealing air cylinders (31) are installed and fixedly connected to the side end of the sealing box (26). The output ends of multiple sealing air cylinders (31) extend into the sealing box (26), and multiple sealing air cylinders (31) are connected to two semi-circular sealing plates (27).

4. A sealed steel sleeve for shield tunneling launch according to claim 3, characterized in that, The counterweight mechanism includes a stop platform (24) and a water tank (25). The stop platform (24) is located on the side of the base (1). The stop platform (24) is connected to the stop plate (17). The water tank (25) is installed and fixed on the top of the stop platform (24).

5. A sealed steel sleeve for shield tunneling launch according to claim 4, characterized in that, Two supporting arc plates (18) are fixedly connected to the side end of the abutment plate (17).

6. A sealed steel sleeve for shield tunneling launch according to claim 5, characterized in that, The gap between the abutment plate (17), the two connecting blocks (11), and the upper steel cylinder (12) is filled with a sealing block (14).

7. A method for using a steel sleeve for sealed shield tunneling launch, characterized in that, The application of a shield tunneling sealed launching steel sleeve as described in any one of claims 1-6 includes the following steps: S1, Expand: Two electric push rods (19) are activated, which push two transition blocks (20), which in turn push two first transition rods (21), which push two second transition rods (22), making the two second transition rods (22) 90° with the two first transition rods (21). The two second transition rods (22) push two L-shaped connecting rods (23) to rotate, which in turn drive two connecting rods (33) to deflect. The two connecting rods (33) drive multiple actuating rods (16), which in turn pull multiple connecting blocks (13) to deflect. Finally, multiple upper steel cylinders (12) are flipped around the two hinge rods (15) as the axis, so that multiple upper steel cylinders (12) are symmetrically unfolded. S2, Feed Adjustment: After assembling the shield machine parts between multiple docking blocks (11) and the upper steel cylinder (12), the shield machine is started to slide on multiple rails (4) to control the distance between the shield machine and the inner wall of the deep trench and complete the feed adjustment. S3, Isolation and Sealing: When the tunnel boring machine moves to a fixed distance from the inner wall of the deep trench, multiple sealing air cylinders (31) are activated. Under the push of the multiple sealing air cylinders (31), two semi-circular sealing plates (27) approach the circumferential surface of the tunnel boring machine, isolate the working end of the tunnel boring machine, prevent dust from overflowing during the operation of the tunnel boring machine, reduce the flying dust in the deep trench, and achieve isolation and sealing of the tunnel boring machine. S4. Water injection construction: Fill the water tank (25) with water. The water tank (25) counterweights the abutment plate (17) by filling it with water. The abutment plate (17) provides force support for the tunnel boring machine's feed and excavation, facilitating the initial feed operation of the tunnel boring machine and realizing water injection construction.

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