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

Abstract

The application provides a steel sleeve for receiving a shield and a use method thereof, and belongs to the technical field of shield machines, and comprises a steel structure base, an excess ring, steel sleeve bodies, a sleeve bottom, a base, a movable base and a displacement mechanism, wherein: the excess ring is fixedly connected to the top of the steel structure base and is used for butt-jointing a tunnel portal excavated by the shield; the steel sleeve bodies are provided in plurality and are fixedly connected to the top of the steel structure base and are fixedly connected to one side of the excess ring in sequence; the sleeve bottom is fixedly connected to one side at the end of the steel sleeve body and forms a sleeve shape together with the excess ring and the plurality of steel sleeve bodies; and the base is spliced to the side of the steel structure base; compared with the existing operation process, the application is safer and more reasonable, and is mechanically operated, can provide greater kinetic energy to move the excess ring and the steel sleeve body, and can assist in positioning more stably, effectively improves the assembly speed and the safety of the workers.

Description

Technical Field

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

[0002] In the construction of shield tunnels in urban subway projects, the shield machine receiving process is a crucial step, and also the most difficult and risky, especially in permeable strata prone to water and sand inrush, where risk control is particularly challenging. Currently, the main methods for sealing the shield machine exiting the tunnel are using rubber curtains and pressure plates at the tunnel entrance; alternatively, freezing methods are used to reinforce the strata and achieve a certain sealing effect.

[0003] Chinese Patent Application No. CN201811279721.5 discloses a method for launching and receiving tunnel boring machines (TBMs) using a recyclable diaphragm wall and steel sleeve. This construction method includes: reinforcing the soil outside the diaphragm wall of the TBM shaft; constructing the diaphragm wall; erecting the formwork system within the TBM shaft portal area; removing the diaphragm wall; backfilling concrete at the diaphragm wall location; installing the sealed steel sleeve and reaction frame; assembling and debugging the TBM; installing the negative ring segments; dismantling the formwork system within the TBM shaft portal area; pushing the TBM to the launching end wall; filling the gaps in the sealed steel sleeve; launching the TBM; and receiving the TBM. This invention improves the waterproofing effect within the portal area, reduces wear on the cutterhead and cutting tools, reduces the area requiring soil reinforcement outside the diaphragm wall, enables earlier entry and later exit from the tunnel, ensures construction safety, and reduces construction costs.

[0004] When a tunnel boring machine (TBM) exits the ground, it is generally received using a shield steel sleeve. The shield steel sleeve is made up of multiple semi-circular steel plates spliced ​​together. During assembly, a gantry frame needs to be erected, and then the steel plates are suspended by steel cables and bolted together. The assembly process is very complicated, and the suspension method requires multiple workers to maintain stability and assist in the splicing, which is time-consuming, labor-intensive, and has certain dangers. Therefore, we propose a shield receiving steel sleeve and its usage method. Summary of the Invention

[0005] The purpose of this invention is to provide a steel sleeve for shield receiving and its usage method, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A steel sleeve for receiving tunnel boring machines, comprising:

[0008] Steel structure foundation;

[0009] The transition ring is fixedly connected to the top of the steel structure base and is used to connect to the tunnel portal from the shield tunnel.

[0010] The main body of the steel sleeve is provided in multiple parts, all of which are fixedly connected to the top of the steel structure base and are sequentially fixedly connected to one side of the transition ring;

[0011] The bottom of the cylinder is fixedly connected to one side at the end of the main body of the steel sleeve, and together with the transition ring and multiple main bodies of the steel sleeve, it forms a sleeve shape.

[0012] The base is spliced ​​to the side of the steel structure base;

[0013] A movable base, which is movably mounted on the upper side of the base;

[0014] An auxiliary assembly mechanism, located on the upper side of the movable base, supports the transition ring and the steel sleeve body through an outward expansion method, thereby moving the steel sleeve body to the upper side of the steel structure base to achieve the function of assisting assembly; and

[0015] The displacement mechanism, which is mounted on the base, drives the movable base to move, thereby moving the transition ring and the main body of the steel sleeve to expand the construction range of the auxiliary assembly mechanism.

[0016] As a preferred embodiment of the present invention, the auxiliary assembly mechanism includes:

[0017] The bearing housing is welded to the top of the movable base;

[0018] An extension seat is rotatably mounted on the upper side of the bearing seat, and a mounting bracket is fixedly connected to its top. Two telescopic rods are slidably connected to the mounting bracket on the side near the transition ring.

[0019] A multi-sided mounting shell is fixedly connected between two telescopic rods, and a steel shell is fixedly connected to the side of the shell closest to the bearing seat.

[0020] The limiting rod is fixedly connected between the polygonal mounting shell and the steel shell, and its surface is slidably connected with a sliding sleeve.

[0021] A regular hexagonal frustum is fixedly connected to the surface of the sliding sleeve, and multiple evenly distributed sliding grooves are formed on its surface;

[0022] The first hydraulic cylinder is fixedly connected to the steel shell on the side near the extension seat, and its extended end is fixedly connected to the sliding sleeve.

[0023] The second hydraulic cylinder is fixedly connected to the inner plate of the mounting bracket, and its extended end is fixedly connected to the steel shell.

[0024] The outward expansion assembly, comprising multiple sets evenly distributed extending to the outer side of the polygonal mounting shell, serves to support the inner wall of the transition ring and the steel sleeve body; and

[0025] An angle adjustment component, located on the upper side of the movable base, is used to drive the extension seat to rotate in order to adjust the position of the expansion component.

[0026] As a preferred embodiment of the present invention, each group of the external expansion components includes:

[0027] The slider is slidably connected within the groove;

[0028] An expansion rod is fixedly connected to the side of the slider. A sliding hole is provided on the side of the polygonal mounting shell. The expansion rod slides through the sliding hole and extends outward.

[0029] A baffle plate, which is fixedly connected to the circumferential surface of the outer expansion rod;

[0030] A washer, which is slidably connected to the circumferential surface of the expanding rod; and

[0031] A spring is fitted onto the circumferential surface of the expanding rod, located between the washer and the stop.

[0032] As a preferred embodiment of the present invention, the angle adjustment component includes:

[0033] The first motor is fixedly connected to the top of the movable base.

[0034] The worm gear is fixedly connected to the output end of the first motor;

[0035] The mounting shaft is rotatably connected to the inner wall of the bearing housing, and one end of the extension seat is fixedly connected to the circumferential surface of the mounting shaft.

[0036] The worm gear is fixedly connected to one end of the mounting shaft and meshes with the worm.

[0037] As a preferred embodiment of the present invention, the displacement mechanism:

[0038] The wheel rail is provided in two parts and is fixedly connected to the top of the base. Steel wheels are rotatably connected to both sides of the movable base, and the steel wheels are respectively rolled to the upper side of the corresponding wheel rail.

[0039] The second motor is fixedly connected to the top of the movable base, and its output end is fixedly connected to the first sprocket;

[0040] The bearing bracket is fixedly connected to the side of the movable base;

[0041] A short shaft is rotatably connected to a bearing bracket, and a second sprocket is fixedly connected to one end of the shaft.

[0042] The chain is connected between the second sprocket and the first sprocket.

[0043] The rack and pinion, which is fixedly connected to the top of the steel structure base; and

[0044] The large gear is fixedly connected to the other end of the short shaft and meshes with the gear rail.

[0045] As a preferred embodiment of the present invention, a mounting portion is provided on one side of the bearing housing, the worm gear and the worm are both located within the mounting portion, a protective shell is fixedly connected to the top of the movable base, and the second motor and the first sprocket are both located within the protective shell.

[0046] As a preferred embodiment of the present invention, one of the steel sleeve bodies has a soil outlet on both sides, one of the steel sleeve bodies has a soil inlet on the upper side, and one of the steel sleeve bodies has a water inlet on the upper side, wherein the soil outlet, soil inlet, and water inlet are located at different positions.

[0047] As a preferred embodiment of the present invention, a drain outlet is provided on the side of the cylinder bottom near the base, and multiple steel piles are detachably connected to the side of the cylinder bottom near the base.

[0048] As a preferred embodiment of the present invention, the steel structure base is provided with a docking groove at one end near the base, and the base is provided with a docking pin at one end near the steel structure base, the docking pin being engaged in the docking groove.

[0049] A method for using a steel sleeve for receiving tunnel boring machines includes the following steps:

[0050] S1. Fix the steel structure base and the base on the ground, and insert the connecting pin into the connecting groove to align the base with the steel structure base.

[0051] S2. The transition ring and multiple steel sleeve bodies are sequentially suspended to the upper side of the steel structure base by the gantry equipment;

[0052] S3. Based on the positions of the transition ring and the main body of the steel sleeve, the output end of the first motor drives the worm gear to rotate, the worm gear drives the mounting shaft to rotate, the mounting shaft drives the extension seat to rotate, and then slowly adjusts the angle of the polygonal mounting shell. Then, the extension end of the second hydraulic cylinder pushes the steel shell to move, so that the polygonal mounting shell can move into the interior of the transition ring and the main body of the steel sleeve.

[0053] S4. When the polygonal mounting shell is located inside the transition ring or the main body of the steel sleeve, the extension end of the first hydraulic cylinder pushes the sliding sleeve to move. The sliding sleeve drives the regular hexagonal cone to move. As the diameter of the regular hexagonal cone near the base gradually increases, under the sliding limit of the slide groove, multiple sliders push the outward expansion rod to slide outward, so that the centrifugal ends of the multiple outward expansion rods can support the inner wall of the transition ring or the main body of the steel sleeve. At this time, the transition ring or the main body of the steel sleeve can move with the base.

[0054] S5. By controlling the output end of the first motor, adjust the angle of the polygonal mounting shell back to its original position, then control the extension end of the second hydraulic cylinder to push the steel shell to move, and drive the first sprocket to rotate through the output end of the second motor. Under the transmission action of the chain, the second sprocket is driven to rotate, which in turn drives the large gear to rotate. Under the meshing action with the gear rail, the movable base is driven to move linearly, and the position of the movable base is moved as a whole, so that the transition ring and multiple steel sleeve bodies are moved to be placed on the upper side of the steel structure base. Then the extension end of the first hydraulic cylinder returns to its original position, so that the outer expansion rod is separated from the transition ring and the steel sleeve body, and the outer expansion rod is controlled to rotate away from the steel sleeve body. At this time, the transition ring and the steel sleeve body can be fixed on the upper side of the steel structure base by bolts.

[0055] S6. After the transition ring and the main body of the steel sleeve are installed and fixed, the bottom of the sleeve is fixed to the side of the main body of the steel sleeve near the base with bolts, and multiple steel piles are fixed between the bottom of the sleeve and the ground, so that the transition ring, the main body of the steel sleeve and the bottom of the sleeve constitute the sleeve.

[0056] S7. Open the water inlet and fill the sleeve with water to test the pressure resistance and sealing performance of the sleeve. After the test is completed, open the drain outlet to drain the water.

[0057] S8. Open the excavation port and chisel away the corresponding hole in the transition ring, then close the excavation port;

[0058] S9. Open the inlet and fill the sleeve with soil. After filling, close the inlet.

[0059] S10. Begin accepting the tunnel boring machine (TBM). The TBM gradually advances into the sleeve from the portal corresponding to the transition ring, and then completes the acceptance of the TBM.

[0060] Compared with the prior art, the beneficial effects of the present invention are:

[0061] 1. In this scheme, the extended end of the first hydraulic cylinder pushes the sliding sleeve to move, which in turn moves the hexagonal truncated cone. As the diameter of the hexagonal truncated cone gradually increases near the base, the centrifugal ends of multiple expanding rods can support the inner wall of the transition ring or the main body of the steel sleeve. At this time, the transition ring or the main body of the steel sleeve can move with the base. Then, the extended end of the second hydraulic cylinder is controlled to push the steel shell to move, and the output end of the second motor drives the first sprocket to rotate, causing the transition ring and multiple steel sleeve bodies to move to the upper side of the steel structure base. Then, the extended end of the first hydraulic cylinder returns to its original position, separating the expanding rods from the transition ring and the main body of the steel sleeve. It controls the outer expansion rod to rotate away from the main body of the steel sleeve. At this time, the transition ring and the main body of the steel sleeve can be fixed to the upper side of the steel structure base with bolts, reducing the manual positioning work. Compared with the existing operation process, it is safer and more reasonable. Moreover, the mechanized operation can provide greater kinetic energy to move the transition ring and the main body of the steel sleeve, making the auxiliary positioning more stable, effectively improving the assembly speed and the safety of the workers. After the transition ring and the main body of the steel sleeve are assembled, the polygonal mounting shell can be rotated to the side away from the main body of the steel sleeve without affecting the installation of the bottom of the cylinder and the steel pile. The space design is reasonable and effectively assists the construction and use of modern shield tunneling machines.

[0062] 2. In this design, the worm gear and worm have self-locking properties, so the mounting shaft will not rotate even if the first motor is damaged, providing protection. The polygonal mounting shell is fixed between the extended ends of the two telescopic rods, which reinforces the polygonal mounting shell and prevents it from bending due to excessive weight. The second hydraulic cylinder is fixed to the side of the reinforcing plate. The extended end of the second hydraulic cylinder can push the polygonal mounting shell to move linearly, thereby extending the moving distance of the polygonal mounting shell. By driving the large gear to rotate, the position of the large gear can be moved. The displacement distance is adjusted to match the assembly length of the transition ring and the steel sleeve body without changing the occupied area. Attached Figure Description

[0063] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0064] In the attached diagram:

[0065] Figure 1 This is a schematic diagram of the installation process of the present invention;

[0066] Figure 2 This is a schematic diagram of the shield-receiving sleeve of the present invention after installation;

[0067] Figure 3 This is an exploded view of the sleeve structure of the present invention;

[0068] Figure 4 This is a schematic diagram of the auxiliary assembly structure of the present invention;

[0069] Figure 5 This is a polygonal mounting shell diagram of the present invention;

[0070] Figure 6 For the present invention Figure 5 Exploded view;

[0071] Figure 7 This is an exploded view of the frustum of a regular hexagon in this invention;

[0072] Figure 8 This is a schematic diagram of the displacement mechanism of the present invention;

[0073] Figure 9 This is a schematic diagram of the first motor of the present invention;

[0074] Figure 10 This is a schematic diagram of the second motor in this invention.

[0075] Explanation of the labels in the diagram: 1. Steel structure base; 101. Connecting groove; 2. Transition ring; 3. Steel sleeve body; 301. Exit port; 302. Inlet port; 303. Water inlet; 4. Cylinder bottom; 401. Sewage outlet; 5. Steel pile; 6. Base; 601. Connecting pin; 7. Polygonal mounting shell; 8. Steel shell; 9. Sliding hole; 10. Outward expansion rod; 11. Shim; 12. Baffle; 13. Spring; 14. Regular hexagonal pyramid; 15. Sliding groove; 16. Sliding block; 17. Sliding sleeve; 18. Limiting rod 19. Rod; 20. First hydraulic cylinder; 21. Movable base; 22. Wheel and rail; 23. Steel wheel; 24. Bearing housing; 25. Mounting part; 26. Mounting shaft; 27. Extension seat; 28. Mounting bracket; 29. ​​Second hydraulic cylinder; 30. Telescopic rod; 31. Worm gear; 32. First motor; 33. Worm; 44. Protective shell; 55. Second motor; 66. First sprocket; 77. Bearing bracket; 88. Short shaft; 99. Second sprocket; 10. Large gear; 11. Chain; 12. Gear rail. Detailed Implementation

[0076] 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.

[0077] Example

[0078] Please see Figures 1-10 The technical solution provided in this embodiment is as follows:

[0079] A steel sleeve for receiving tunnel boring machines (TBMs) includes a steel base 1, a transition ring 2, a steel sleeve body 3, a sleeve bottom 4, a base 6, a movable base 20, and a displacement mechanism. The transition ring 2 is fixedly connected to the top of the steel base 1 and is used to connect to the tunnel portal from which the TBM exits. Multiple steel sleeve bodies 3 are provided, each fixedly connected to the top of the steel base 1 and sequentially fixedly connected to one side of the transition ring 2. The sleeve bottom 4 is fixedly connected to one side located at the end of the steel sleeve body 3, and together with the transition ring 2 and the multiple steel sleeve bodies 3, constitutes a [missing information - likely a specific structure or feature]. The sleeve has a sleeve shape; the base 6 is spliced ​​to the side of the steel structure base 1; the movable base 20 is movably set on the upper side of the base 6; the auxiliary assembly mechanism is set on the upper side of the movable base 20, which supports the transition ring 2 and the steel sleeve body 3 by expanding outward, and then moves the steel sleeve body 3 to the upper side of the steel structure base 1 to achieve the function of auxiliary assembly; the displacement mechanism is set on the base 6, which drives the movable base 20 to move to drive the transition ring 2 and the steel sleeve body 3 to move, so as to expand the construction range of the auxiliary assembly mechanism.

[0080] In specific embodiments of the present invention, such as Figure 1 , Figure 2 and Figure 3As shown, the sleeve consists of a transition ring 2, multiple steel sleeve bodies 3, and a sleeve bottom 4. The steel structure base 1 is fixed to the ground. The transition ring 2 corresponds to the tunnel entrance where the shield tunnel exits. The transition ring 2 and the steel sleeve bodies 3 have the same diameter. The sleeve bottom 4 seals the side of the steel sleeve body 3 away from the transition ring 2. During assembly, the transition ring 2 and the multiple steel sleeve bodies 3 are first assembled into an independent ring structure and suspended underground by steel cables. During construction, the positions of the transition ring 2 and the steel sleeve bodies 3 need to be manually positioned. Both the transition ring 2 and the steel sleeve bodies 3 are steel structures, heavy, and manual positioning is time-consuming, labor-intensive, and prone to accidents, posing a certain degree of danger. This solution addresses this by connecting a base 6 to the side of the steel structure base 1, creating an attachable platform for construction. The output of the first motor 30 drives the worm gear 29 to rotate, which in turn drives the mounting shaft 24 to rotate. The mounting shaft 24 then drives the extension seat 25 to rotate, thereby slowly adjusting the angle of the polygonal mounting shell 7. The extended end of the second hydraulic cylinder 27 then pushes the steel shell 8 to move, allowing the polygonal mounting shell 7 to move into the transition ring 2 and the steel sleeve body 3. When the polygonal mounting shell 7 is inside the transition ring 2 or the steel sleeve body 3, the extended end of the first hydraulic cylinder 19 pushes the sliding sleeve 17 to move. The sliding sleeve 17 drives the regular hexagonal pyramid 14 to move. As the diameter of the regular hexagonal pyramid 14 gradually increases near the base 6, under the sliding limit of the slide groove 15, multiple sliders 16 push the outward expansion rods 10 to slide outward, causing the multiple outward expansion rods 10 to move away from the base 6. The core end can support the inner wall of the transition ring 2 or the steel sleeve body 3. At this time, the transition ring 2 or the steel sleeve body 3 can move with the base 6. By controlling the output end of the first motor 30, the angle of the polygonal mounting shell 7 is adjusted back to its original position. Then, the extended end of the second hydraulic cylinder 27 is controlled to push the steel shell 8 to move. The output end of the second motor 33 drives the first sprocket 34 to rotate. Under the transmission action of the chain 39, the second sprocket 37 is driven to rotate, which in turn drives the large gear 38 to rotate. Under the meshing action with the gear rail 40, the movable base 20 is driven to move linearly. The position of the movable base 20 is moved as a whole, so that the transition ring 2 and multiple steel sleeve bodies 3 are moved to the upper side of the steel structure base 1. Then the extended end of the first hydraulic cylinder 19 returns to its original position. Returning to its original position, the outer expansion rod 10 is separated from the transition ring 2 and the steel sleeve body 3, and the outer expansion rod 10 is controlled to rotate away from the steel sleeve body 3. At this time, the transition ring 2 and the steel sleeve body 3 can be fixed to the upper side of the steel structure base 1 with bolts, reducing the manual positioning work. Compared with the existing operation process, it is safer and more reasonable. Moreover, the mechanized operation can provide greater kinetic energy to move the transition ring 2 and the steel sleeve body 3, making the auxiliary positioning more stable, effectively improving the assembly speed and the safety of the workers. In addition, after the transition ring 2 and the steel sleeve body 3 are assembled, the polygonal mounting shell 7 can be rotated to the side away from the steel sleeve body 3 without affecting the installation of the bottom 4 and the steel pile 5. The space design is reasonable and effectively assists the construction and use of modern shield tunneling machines.

[0081] Specifically, the auxiliary assembly mechanism includes:

[0082] Bearing housing 23, which is welded to the top of movable base 20;

[0083] The extension seat 25 is rotatably mounted on the upper side of the bearing seat 23, and a mounting bracket 26 is fixedly connected to its top. Two telescopic rods 28 are slidably connected to the side of the mounting bracket 26 near the transition ring 2.

[0084] The polygonal mounting shell 7 is fixedly connected between the two telescopic rods 28, and a steel shell 8 is fixedly connected to the side of the shell near the bearing seat 23.

[0085] The limiting rod 18 is fixedly connected between the polygonal mounting shell 7 and the steel shell 8, and its surface is slidably connected with a sliding sleeve 17.

[0086] A regular hexagonal frustum 14 is fixedly connected to the surface of the sliding sleeve 17, and a plurality of evenly distributed sliding grooves 15 are formed on its surface;

[0087] The first hydraulic cylinder 19 is fixedly connected to the side of the steel shell 8 near the extension seat 25, and its extended end is fixedly connected to the sliding sleeve 17.

[0088] The second hydraulic cylinder 27 is fixedly connected to the inner plate of the mounting bracket 26, and its extended end is fixedly connected to the steel shell 8.

[0089] The outward expansion assembly, which is provided in multiple sets and evenly distributed, extends to the outer side of the polygonal mounting shell 7, and is used to support the inner wall of the transition ring 2 and the steel sleeve body 3. Each set of outward expansion assemblies includes:

[0090] The slider 16 is slidably connected within the groove 15;

[0091] An expansion rod 10 is fixedly connected to the side of the slider 16. A sliding hole 9 is provided on the side of the polygonal mounting shell 7. The expansion rod 10 slides through the sliding hole 9 and extends outward.

[0092] The baffle 12 is fixedly connected to the circumferential surface of the outer expansion rod 10;

[0093] Shim 11, which is slidably connected to the circumferential surface of the outer expansion rod 10;

[0094] Spring 13 is sleeved on the circumferential surface of the outer expansion rod 10 and is located between the washer 11 and the baffle 12;

[0095] An angle adjustment component, disposed on the upper side of the movable base 20, is used to drive the extension seat 25 to rotate to adjust the position of the outward expansion component. The angle adjustment component includes:

[0096] The first motor 30 is fixedly connected to the top of the movable base 20.

[0097] The worm gear 31 is fixedly connected to the output end of the first motor 30;

[0098] Mounting shaft 24 is rotatably connected to the inner wall of bearing housing 23, and one end of extension seat 25 is fixedly connected to the circumferential surface of mounting shaft 24;

[0099] The worm gear 29 is fixedly connected to one end of the mounting shaft 24 and meshes with the worm 31.

[0100] In a specific embodiment of the present invention, as shown in Figure 4, steel wheels 22 are installed on both sides of the movable base 20, which can roll on the upper side of the wheel rail 21. The wheel rail 21 restricts the steel wheels 22 in a manner similar to the design of a train track. The outer diameter of the steel wheel 22 is smaller than that of the inner diameter, so that the steel wheel 22 will not derail when bearing weight. In use, the output end of the second motor 33 drives the first sprocket 34 to rotate, which in turn drives the second sprocket 37 to rotate under the transmission action of the chain 39, and then drives the large gear 38 to rotate. Under the meshing action with the gear rail 40, the movable base 20 is driven to move linearly, thus moving the position of the movable base 20 as a whole, and then linearly controlling the position of the polygonal mounting shell 7. The extended end of the second hydraulic cylinder 27 pushes the steel shell 8 to move. The dual displacement design increases the displacement distance of the polygonal mounting shell 7, leaving enough space for the overall construction. The hollow design of the base 6 will not obstruct the assembly of the steel pile 5. Figure 9 As shown, the mounting shaft 24 is located at the center of rotation of the extension seat 25. It drives the worm gear 29 to rotate via the output of the first motor 30. The worm gear 29 drives the mounting shaft 24 to rotate, which in turn drives the extension seat 25 to rotate, thus slowly adjusting the angle of the polygonal mounting shell 7. The worm gear 29 and worm 31 have a self-locking property; even if the first motor 30 is damaged, the mounting shaft 24 will not rotate, providing protection. The mounting frame 26 consists of two side cylinders and multiple reinforcing plates. Telescopic rods 28 are installed inside the two side cylinders. The polygonal mounting shell 7 is fixed between the extended ends of the two telescopic rods 28, reinforcing the polygonal mounting shell 7 and preventing it from bending due to excessive weight. The second hydraulic cylinder 27 is fixed to the side of the reinforcing plate. The extended end of the second hydraulic cylinder 27 can push the polygonal mounting shell 7 to move linearly, thereby extending the moving distance of the polygonal mounting shell 7. Figure 6 and Figure 7As shown, the sliding hole 9 is used to restrict the linear movement of the outward expansion rod 10, the limiting straight rod 18 is used to restrict the linear movement of the sliding sleeve 17, and thus restrict the linear movement of the regular hexagonal pyramid 14. The sliding groove 15 restricts the linear movement of the slider 16. The sliding sleeve 17 can be pushed by the extended end of the first hydraulic cylinder 19. The sliding sleeve 17 drives the regular hexagonal pyramid 14 to move linearly. Multiple sliders 16 move linearly along the sliding groove 15. At this time, multiple outward expansion rods 10 move outward linearly in sync, so that the support surface formed by multiple outward expansion rods 10 expands, thereby supporting the inner wall of the transition ring 2 and the steel sleeve body 3. At this time, the transition ring 2 and the steel sleeve body 3 can move with the polygonal mounting shell 7. At this time, the transition ring 2 and the steel sleeve body 3 can be moved according to the installation position of the transition ring 2 and the steel sleeve body 3 to play an auxiliary assembly role. No manual positioning is required, thus protecting the safety of the workers.

[0101] Specifically, the displacement mechanism:

[0102] Two wheel rails 21 are provided and fixedly connected to the top of the base 6. Steel wheels 22 are rotatably connected to both sides of the movable base 20, and the steel wheels 22 are respectively rolledly connected to the upper side of the corresponding wheel rail 21.

[0103] The second motor 33 is fixedly connected to the top of the movable base 20, and its output end is fixedly connected to the first sprocket 34;

[0104] The bearing bracket 35 is fixedly connected to the side of the movable base 20;

[0105] A short shaft 36 is rotatably connected to a bearing bracket 35, and a second sprocket 37 is fixedly connected to one end of the shaft.

[0106] Chain 39, which is driven between the second sprocket 37 and the first sprocket 34;

[0107] The rack rail 40 is fixedly connected to the top of the steel base 1; and

[0108] The large gear 38 is fixedly connected to the other end of the short shaft 36 and meshes with the gear rail 40.

[0109] In specific embodiments of the present invention, such as Figure 8 and Figure 10As shown, the large gear 38 meshes with the toothed rail 40, and the position of the toothed rail 40 is fixed. By driving the large gear 38 to rotate, the position of the large gear 38 can be moved. In use, the output end of the second motor 33 drives the first sprocket 34 to rotate, and under the transmission action of the chain 39, it drives the second sprocket 37 to rotate, which in turn drives the large gear 38 to rotate. Under the meshing action with the toothed rail 40, the movable base 20 is driven to move linearly, and the position of the movable base 20 is moved as a whole. At this time, the position of the polygonal mounting shell 7 changes with the movable base 20, which plays an auxiliary displacement role. The displacement distance is adjusted to match the assembly length of the transition ring 2 and the steel sleeve body 3 without changing the occupied area.

[0110] Specifically, a mounting part 2301 is provided on one side of the bearing housing 23, and the worm gear 29 and worm 31 are both located in the mounting part 2301. A protective shell 32 is fixedly connected to the top of the movable base 20, and the second motor 33 and the first sprocket 34 are both located in the protective shell 32.

[0111] In a specific embodiment of the present invention, the mounting part 2301 is used to protect the worm gear 29 and the worm 31, and both ends of the worm gear 29 are rotatably connected to the inner wall of the mounting part 2301 to support and limit the two ends of the worm gear 29. The protective shell 32 protects the second motor 33 and the first sprocket 34.

[0112] Specifically, one of the steel sleeve bodies 3 has a soil outlet 301 on both sides, a soil inlet 302 on the upper side of one of the steel sleeve bodies 3, and a water inlet 303 on the upper side of one of the steel sleeve bodies 3. The soil outlet 301, soil inlet 302, and water inlet 303 are located in different positions.

[0113] In a specific embodiment of the present invention, two outlets 301 are provided for convenient sewage discharge. Both the inlet 302 and the water inlet 303 are located on the upper side of the steel sleeve body 3. The inlet 302 has a large diameter and can fill soil into the steel sleeve body 3, so that when the shield enters the steel sleeve body 3, it will not directly contact the inner wall of the steel sleeve body 3, reducing direct collision between metals and extending service life. The water inlet 303 can be connected to an external pipe to flush water into the sleeve to check the sealing performance, and at the same time facilitates subsequent cleaning.

[0114] Specifically, a drain outlet 401 is provided on the side of the bottom of the cylinder 4 near the base 6, and multiple steel piles 5 are detachably connected to the side of the bottom of the cylinder 4 near the base 6.

[0115] In a specific embodiment of the present invention, the drain outlet 401 is used for drainage and sewage discharge, one end of the steel pile 5 is fixed to the outside of the bottom of the cylinder 4, and the other end of the steel pile 5 is fixed to the ground to strengthen the fixing and support function.

[0116] Specifically, the steel base 1 has a docking groove 101 at one end near the base 6, and the base 6 has a docking pin 601 at one end near the steel base 1. The docking pin 601 is engaged in the docking groove 101.

[0117] In a specific embodiment of the present invention, the docking pin 601 is assembled with the docking groove 101, so that the base 6 is accurately positioned after installation, which is beneficial to the subsequent positioning of the transition ring 2 and the steel sleeve body 3, and is in line with actual use.

[0118] A method for using a steel sleeve for receiving tunnel boring machines includes the following steps:

[0119] S1. Fix the steel base 1 and the base 6 on the ground, and insert the connecting pin 601 into the connecting groove 101 so that the base 6 is aligned with the steel base 1.

[0120] S2. The transition ring 2 and multiple steel sleeve bodies 3 are sequentially suspended to the upper side of the steel structure base 1 by the gantry equipment;

[0121] S3. Based on the positions of the transition ring 2 and the steel sleeve body 3, the output end of the first motor 30 drives the worm gear 29 to rotate, the worm gear 29 drives the mounting shaft 24 to rotate, the mounting shaft 24 drives the extension seat 25 to rotate, and then slowly adjusts the angle of the polygonal mounting shell 7. Then, the extension end of the second hydraulic cylinder 27 pushes the steel shell 8 to move, so that the polygonal mounting shell 7 can move into the interior of the transition ring 2 and the steel sleeve body 3.

[0122] S4. When the polygonal mounting shell 7 is located inside the transition ring 2 or the steel sleeve body 3, the extended end of the first hydraulic cylinder 19 pushes the sliding sleeve 17 to move. The sliding sleeve 17 drives the regular hexagonal cone 14 to move. As the diameter of the regular hexagonal cone 14 near the base 6 gradually increases, under the sliding limit of the sliding groove 15, multiple sliders 16 push the outward expansion rod 10 to slide outward, so that the centrifugal ends of the multiple outward expansion rods 10 can support the inner wall of the transition ring 2 or the steel sleeve body 3. At this time, the transition ring 2 or the steel sleeve body 3 can move with the base 6.

[0123] S5. By controlling the output end of the first motor 30, the angle of the polygonal mounting shell 7 is adjusted back to its original position. Then, the extended end of the second hydraulic cylinder 27 is controlled to push the steel shell 8 to move. The output end of the second motor 33 drives the first sprocket 34 to rotate. Under the transmission action of the chain 39, the second sprocket 37 is driven to rotate, which in turn drives the large gear 38 to rotate. Under the meshing action with the gear rail 40, the movable base 20 is driven to move linearly. The position of the movable base 20 is moved as a whole, so that the transition ring 2 and multiple steel sleeve bodies 3 are moved to the upper side of the steel structure base 1. Then, the extended end of the first hydraulic cylinder 19 returns to its original position, so that the outer expansion rod 10 is separated from the transition ring 2 and the steel sleeve body 3. The outer expansion rod 10 is controlled to rotate away from the steel sleeve body 3. At this time, the transition ring 2 and the steel sleeve body 3 can be fixed to the upper side of the steel structure base 1 by bolts.

[0124] S6. After the transition ring 2 and the steel sleeve body 3 are installed and fixed, the bottom of the sleeve 4 is fixed to the side of the steel sleeve body 3 near the base 6 by bolts, and multiple steel piles 5 are fixed between the bottom of the sleeve 4 and the ground, so that the transition ring 2, the steel sleeve body 3 and the bottom of the sleeve 4 constitute a sleeve.

[0125] S7. Open the inlet 303 and fill the sleeve with water to test the pressure resistance and sealing performance of the sleeve. After the test is completed, open the drain port 401 to drain the water.

[0126] S8. Open the soil outlet 301 and chisel away the hole corresponding to the transition ring 2, then close the soil outlet 301;

[0127] S9. Open the soil inlet 302 and fill the sleeve with soil. After filling, close the soil inlet 302.

[0128] S10. Begin accepting the tunnel boring machine (TBM) work. The TBM gradually advances into the sleeve from the portal corresponding to the transition ring 2, and then completes the acceptance of the TBM work.

[0129] Finally, it should be noted that the above 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 steel sleeve for receiving tunnel boring machines, characterized in that, include: Steel structure base (1); The transition ring (2) is fixedly connected to the top of the steel base (1) and is used to dock with the tunnel portal from the shield tunnel. The main body of the steel sleeve (3) is provided in multiple ways, all of which are fixedly connected to the top of the steel structure base (1) and are sequentially fixedly connected to one side of the transition ring (2). The bottom of the cylinder (4) is fixedly connected to one side at the end of the steel sleeve body (3), and together with the transition ring (2) and multiple steel sleeve bodies (3), it forms a sleeve shape; The base (6) is spliced ​​to the side of the steel base (1); A movable base (20) is movably disposed on the upper side of the base (6); An auxiliary assembly mechanism is set on the upper side of the movable base (20). It supports the transition ring (2) and the steel sleeve body (3) by expanding outward, and then moves the steel sleeve body (3) to the upper side of the steel structure base (1) to achieve the function of auxiliary assembly. as well as The displacement mechanism is set on the base (6). It drives the movable base (20) to move so as to move the transition ring (2) and the steel sleeve body (3) to expand the construction range of the auxiliary assembly mechanism. The auxiliary assembly mechanism includes: Bearing housing (23), which is welded to the top of movable base (20); An extension seat (25) is rotatably mounted on the upper side of a bearing seat (23), and a mounting bracket (26) is fixedly connected to its top. Two telescopic rods (28) are slidably connected to the side of the mounting bracket (26) near the transition ring (2). A multi-sided mounting shell (7) is fixedly connected between two telescopic rods (28), and a steel shell (8) is fixedly connected to the side of the shell near the bearing seat (23); The limiting rod (18) is fixedly connected between the polygonal mounting shell (7) and the steel shell (8), and its surface is slidably connected with a sliding sleeve (17); A regular hexagonal frustum (14) is fixedly connected to the surface of the sliding sleeve (17), and its surface is provided with multiple evenly distributed sliding grooves (15); The first hydraulic cylinder (19) is fixedly connected to the steel shell (8) on the side near the extension seat (25), and its extended end is fixedly connected to the sliding sleeve (17). The second hydraulic cylinder (27) is fixedly connected to the inner plate of the mounting bracket (26), and its extended end is fixedly connected to the steel shell (8); An external expansion assembly, having multiple sets evenly distributed extending to the outer side of the polygonal mounting shell (7), serves to support the inner wall of the transition ring (2) and the steel sleeve body (3); and An angle adjustment component is disposed on the upper side of the movable base (20) and is used to drive the extension base (25) to rotate to adjust the position of the expansion component.

2. The steel sleeve for receiving tunnel boring machines according to claim 1, characterized in that, Each set of external expansion components includes: The slider (16) is slidably connected to the groove (15); An expansion rod (10) is fixedly connected to the side of the slider (16). A sliding hole (9) is provided on the side of the polygonal mounting shell (7). The expansion rod (10) slides through the sliding hole (9) and extends outward. A baffle (12) is fixedly connected to the circumferential surface of the outer expansion rod (10); A washer (11) is slidably connected to the circumferential surface of the expanding rod (10); and A spring (13) is fitted onto the circumferential surface of the outer expansion rod (10) and is located between the washer (11) and the baffle (12).

3. A steel sleeve for receiving tunnel boring machines according to claim 2, characterized in that, The angle adjustment component includes: The first motor (30) is fixedly connected to the top of the movable base (20). The worm gear (31) is fixedly connected to the output end of the first motor (30); Mounting shaft (24) is rotatably connected to the inner wall of bearing seat (23), and one end of extension seat (25) is fixedly connected to the circumferential surface of mounting shaft (24); The worm gear (29) is fixedly connected to one end of the mounting shaft (24) and meshes with the worm (31).

4. A steel sleeve for receiving tunnel boring machines according to claim 3, characterized in that, The displacement mechanism: Two wheel rails (21) are provided and fixedly connected to the top of the base (6). Steel wheels (22) are rotatably connected to both sides of the movable base (20). The steel wheels (22) are respectively rolled to the upper side of the corresponding wheel rail (21). The second motor (33) is fixedly connected to the top of the movable base (20), and its output end is fixedly connected to the first sprocket (34); The bearing bracket (35) is fixedly connected to the side of the movable base (20); A short shaft (36) is rotatably connected to a bearing bracket (35), and a second sprocket (37) is fixedly connected to one end of the shaft. The chain (39) is connected between the second sprocket (37) and the first sprocket (34); A rack (40) is fixedly connected to the top of the steel base (1); and A large gear (38) is fixedly connected to the other end of a short shaft (36) and meshes with a gear rail (40).

5. A steel sleeve for receiving tunnel boring machines according to claim 4, characterized in that, A mounting part (2301) is provided on one side of the bearing housing (23). The worm gear (29) and worm (31) are both located in the mounting part (2301). A protective shell (32) is fixedly connected to the top of the movable base (20). The second motor (33) and the first sprocket (34) are both located in the protective shell (32).

6. A steel sleeve for receiving tunnel boring machines according to claim 5, characterized in that, One of the steel sleeve bodies (3) has a soil outlet (301) on both sides, a soil inlet (302) on the upper side of one of the steel sleeve bodies (3), and a water inlet (303) on the upper side of one of the steel sleeve bodies (3). The soil outlet (301), soil inlet (302), and water inlet (303) are located in different positions.

7. A steel sleeve for receiving tunnel boring machines according to claim 6, characterized in that, A drain outlet (401) is provided on the side of the bottom of the cylinder (4) near the base (6), and multiple steel piles (5) are detachably connected to the side of the bottom of the cylinder (4) near the base (6).

8. A steel sleeve for receiving tunnel boring machines according to claim 7, characterized in that, The steel base (1) has a docking groove (101) at one end near the base (6), and the base (6) has a docking pin (601) at one end near the steel base (1), and the docking pin (601) is engaged in the docking groove (101).

9. A method of using a steel sleeve for receiving a tunnel boring machine (TBM), comprising the steel sleeve for receiving a TBM as described in claim 8, characterized in that, Includes the following steps: S1. Fix the steel base (1) and the base (6) on the ground, and insert the connecting pin (601) into the connecting groove (101) so that the base (6) is aligned with the steel base (1); S2. The transition ring (2) and multiple steel sleeve bodies (3) are sequentially suspended to the upper side of the steel structure base (1) by the gantry equipment; S3. Based on the positions of the transition ring (2) and the steel sleeve body (3), the output end of the first motor (30) drives the worm gear (29) to rotate, the worm gear (29) drives the mounting shaft (24) to rotate, the mounting shaft (24) drives the extension seat (25) to rotate, and then slowly adjusts the angle of the polygonal mounting shell (7). Then, the extension end of the second hydraulic cylinder (27) pushes the steel shell (8) to move, so that the polygonal mounting shell (7) can move into the interior of the transition ring (2) and the steel sleeve body (3). S4. When the polygonal mounting shell (7) is located inside the transition ring (2) or the steel sleeve body (3), the extension end of the first hydraulic cylinder (19) pushes the sliding sleeve (17) to move. The sliding sleeve (17) drives the regular hexagonal pyramid (14) to move. As the diameter of the regular hexagonal pyramid (14) near the base (6) gradually increases, under the sliding limit of the slide groove (15), multiple sliders (16) push the outer expansion rod (10) to slide outward, so that the centrifugal end of the multiple outer expansion rods (10) can support the inner wall of the transition ring (2) or the steel sleeve body (3). At this time, the transition ring (2) or the steel sleeve body (3) can move with the base (6). S5. By controlling the output end of the first motor (30), the angle of the polygonal mounting shell (7) is adjusted back to its original position. Then, the extended end of the second hydraulic cylinder (27) is controlled to push the steel shell (8) to move. The output end of the second motor (33) drives the first sprocket (34) to rotate. Under the transmission action of the chain (39), the second sprocket (37) is driven to rotate, which in turn drives the large gear (38) to rotate. Under the meshing action with the gear rail (40), the movable base (20) is driven to move linearly. The position of the movable base (20) is moved as a whole, so that the transition ring (2) and multiple steel sleeve bodies (3) are moved to the upper side of the steel structure base (1). Then the extended end of the first hydraulic cylinder (19) returns to its original position, so that the outer expansion rod (10) is separated from the transition ring (2) and the steel sleeve body (3), and the outer expansion rod (10) is controlled to rotate away from the steel sleeve body (3). At this time, the transition ring (2) and the steel sleeve body (3) can be fixed on the upper side of the steel structure base (1) by bolts. S6. After the transition ring (2) and the steel sleeve body (3) are installed and fixed, the bottom of the sleeve (4) is fixed to the side of the steel sleeve body (3) near the base (6) by bolts, and multiple steel piles (5) are fixed between the bottom of the sleeve (4) and the ground, so that the transition ring (2), the steel sleeve body (3) and the bottom of the sleeve (4) constitute a sleeve. S7. Open the inlet (303) and fill the sleeve with water to test the pressure resistance and sealing performance of the sleeve. After the test is completed, open the drain (401) to drain the water. S8. Open the excavation port (301) and remove the corresponding hole door of the transition ring (2), then close the excavation port (301); S9. Open the inlet (302) and fill the sleeve with soil. After filling, close the inlet (302). S10. Begin accepting the shield tunneling work. The shield machine gradually moves into the sleeve from the portal corresponding to the transition ring (2) and then completes the acceptance of the shield tunneling work.

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