A trailing support system and working method that satisfy the coexistence of earth pressure and slurry balance modes

Abstract

The present invention belongs to the technical field of shield machines, and particularly relates to a trailing support system and a working method that satisfy the coexistence of earth pressure and slurry double modes. The trailing support system of the present invention is connected behind the shield machine main body through towing cylinders and runs synchronously with the main body; the trailing support system includes five trailers arranged in sequence from front to back, wherein the first trailer at the front end is connected to the second trailer as a whole through a connecting bridge; the first trailer is connected to the segment erector beam through two towing cylinders; the bottom of the first trailer is provided with rubber-coated wheels, which can travel on the inner wall of the already assembled segments, and under the towing of the towing cylinders, the synchronous forward movement of the trailing support system and the shield machine main body is realized; the trailing support system is a trailing support system in which a belt conveyor system in the earth pressure mode and a slurry circulation system in the slurry mode can coexist in two states of installation and temporary storage respectively.

Description

Technical Field

[0001] The present invention belongs to the technical field of shield machines, and particularly relates to a trailing support system and a working method that satisfy the coexistence of earth pressure and slurry double modes. Background Art

[0002] The earth pressure / slurry double-mode shield machine can adapt to a wider range of strata, and the construction is more efficient and safer. However, due to the limited layout space at the connection between the main machine and the trailing support, the belt conveyor system in the earth pressure mode and the slurry circulation system in the slurry mode cannot coexist under the connection bridge. When switching from the earth pressure mode to the slurry mode, it is necessary to remove the belt conveyor discharge port and the inclined section of the belt conveyor in the earth pressure mode, and at the same time install the crusher and the dilution tank in the slurry mode; when switching from the slurry mode to the earth pressure mode, it is necessary to remove the crusher and the dilution tank in the slurry mode, and at the same time install the belt conveyor discharge port and the inclined section of the belt conveyor in the earth pressure mode; when switching modes, it is necessary to remove the components that are not applicable to the current mode, and at the same time install the components that are applicable to the current mode. The removed components and the components to be installed are both transported in and out of the tunnel by battery locomotives. That is, the removed components need to be transported out of the tunnel by battery locomotives and properly stored for reuse when switching modes later; the components to be installed need to be transported from outside the tunnel to the connection bridge of the shield machine in the tunnel by battery locomotives and installed in place for use. During the mode switching process, the component transportation work needs to be completed by construction workers with the help of auxiliary tools such as cranes and battery locomotives. The construction workload is large, the cycle is long, and the cost is high, which seriously affects the construction efficiency of the earth pressure / slurry double-mode shield machine mode switching. Summary of the Invention

[0003] In view of the above problems existing in the prior art, the purpose of the present invention is to provide a trailing support system and a working method that satisfy the coexistence of earth pressure and slurry double modes. The trailing support system is a trailing support system in which the belt conveyor system in the earth pressure mode and the slurry circulation system in the slurry mode can coexist in two states of installation and temporary storage respectively.

[0004] One of the purposes of the present invention is to provide a trailing support system that satisfies the coexistence of earth pressure and slurry double modes, which is connected behind the shield machine main body through towing cylinders and runs synchronously with the main body; the trailing support system includes five trailers connected in sequence from front to back, wherein the frontmost No. 1 trailer and the No. 2 trailer are connected as a whole through a connection bridge; the No. 2 trailer to the No. 5 trailer are movably connected through pin shafts;

[0005] The No. 1 trailer is connected to the segment erector support beam through two towing cylinders; the bottom of the No. 1 trailer is provided with rubber-coated wheels, which can walk on the inner wall of the assembled segments, and under the towing of the towing cylinders, the trailing support system and the shield machine main body move forward synchronously;

[0006] The first trailer mainly includes a top bracket, a front mounting seat, a bottom right platform, a bottom middle platform, a slide rail, a crane and a hand winch; the front mounting seat is arranged parallel to the screw conveyor and provides an installation space for the belt conveyor slag receiving port below the slag discharge port of the screw conveyor; the top bracket is installed at the upper end of the first trailer and can temporarily store the removed belt conveyor slag receiving port and the inclined section of the belt conveyor; the hand winch is hung on the top bracket; the bottom right platform is connected to the bottom right side of the first trailer and is used to temporarily store the crusher lifted by the crane; the crane is arranged on the top of the first trailer and on the same side as the bottom right platform, and can lift the crusher to complete its temporary storage; the bottom middle platform is fixed to the bottom of the first trailer, and the two slide rails are located on the top of the bottom middle platform for the sliding transfer and temporary storage of the dilution tank.

[0007] Another object of the present invention is to also provide a working method for the above-mentioned rear support system that satisfies the coexistence of earth pressure and slurry balance modes, specifically including the following steps:

[0008] S1. When tunneling in the earth pressure mode, the soil in the soil bin is conveyed by the screw conveyor, and the soil is discharged from the slag discharge port of the screw conveyor to the belt conveyor slag receiving port, and then conveyed to the belt conveyor slag discharge device through the inclined section and the horizontal section of the belt conveyor, and then transferred to the slag truck and sent to the ground; at this time, the crusher in the slurry balance tunneling mode is arranged on the bottom right platform of the first trailer for standby storage; the dilution tank is arranged on the bottom middle platform of the first trailer for standby storage; in this earth pressure mode, the belt conveyor slag receiving port is arranged directly below the slag discharge port of the screw conveyor, and the belt conveyor slag receiving port and the inclined section of the belt conveyor are installed on the first trailer through the belt conveyor support seat and the hand winch, and the horizontal section of the belt conveyor is arranged on the connecting bridge to the fourth trailer, and the belt conveyor slag discharge device is arranged on the top of the fourth trailer; the front mounting seat is connected to the slag discharge port of the screw conveyor through a floating support, realizing the non-fixed connection between the screw conveyor and the first trailer;

[0009] S2. When switching from the earth pressure mode to the slurry balance mode, the belt conveyor slag receiving port and the inclined section of the belt conveyor originally installed on the first trailer can be removed and hung on the top bracket of the first trailer for temporary storage by using the hand winch; the crusher stored on the bottom right platform of the first trailer is lifted by the crane to the dilution tank, and after assembly, it slides along the two slide rails on the bottom middle platform of the first trailer to directly below the slag discharge port of the screw conveyor to install the crusher and the slag discharge port of the screw conveyor, completing the switching from the earth pressure to the slurry balance tunneling mode;

[0010] S3. During the slurry shield tunneling mode, the slurry in the soil chamber is conveyed by the screw conveyor and discharged from the slag outlet of the screw conveyor. After being preliminarily crushed by the crusher and re - adjusted in the dilution tank, the slurry continuously enters and exits through the slurry circulation system. The slurry pipe extension device compensates for the slurry pipeline during tunneling until it is transported to the ground for re - treatment of the slurry. At this time, the belt conveyor slag receiving port and the inclined section of the belt conveyor in the earth pressure tunneling mode are stored on the top bracket of the first trailer by means of a hand - operated hoist for standby. In this slurry shield mode, the front mounting seat of the first trailer is connected to the screw conveyor through a floating support, and the slag outlet of the screw conveyor is bolt - connected to the crusher. The dilution tank is placed on the slide rail of the middle platform at the bottom of the first trailer, and one end of the dilution tank is bolt - connected to the crusher, and the other end is connected to the slurry circulation pipeline.

[0011] S4. When switching from the slurry shield mode to the earth pressure mode, the crusher and the dilution tank originally installed directly below the slag outlet of the screw conveyor are removed. The crusher and the dilution tank are slid to the storage position along the slide rail. The dilution tank is temporarily stored at the rear of the middle platform at the bottom of the first trailer, and the crusher is temporarily stored on the right - hand platform at the bottom of the first trailer by means of a crane. At the same time, the belt conveyor slag receiving port and the inclined section of the belt conveyor originally stored on the top bracket of the first trailer are installed in place to complete the switching from the slurry shield to the earth pressure tunneling mode.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] The special layout of the rear - supporting system and the special structure of the first trailer can realize the spatial co - existence of the belt conveyor slag receiving port and the inclined section of the belt conveyor in the earth pressure mode and the crusher and the dilution tank in the slurry shield mode in two states: installation and temporary storage. It effectively solves the problem of component co - existence in the earth pressure / slurry shield dual - mode, and at the same time, the mode switching no longer requires the use of battery - powered vehicles to transfer components inside / outside the tunnel, greatly saving the time and cost of mode switching and improving the construction efficiency of mode switching of the earth pressure / slurry shield dual - mode shield machine.

[0014] Specifically, the front mounting seat of the first trailer is in floating support with the screw conveyor, realizing the non - fixed connection of the screw conveyor relative to the first trailer; the top bracket of the first trailer provides a temporary storage space for the belt conveyor slag receiving port and the inclined section of the belt conveyor; the structural form of the front mounting seat of the first trailer provides an installation space for the crusher and the dilution tank below the slag outlet of the screw conveyor; the design of the crane on the first trailer realizes the function of disassembling, installing and lifting the crusher; the design of the middle platform and the slide rail at the bottom of the first trailer realizes the sliding transfer and temporary storage of the dilution tank. Description of the Drawings

[0015] Figure 1 Schematic diagram of the rear - supporting system for the earth pressure tunneling mode of the earth pressure / slurry shield machine;

[0016] Figure 2 is Figure 1View A1 - A1;

[0017] Figure 3 is Figure 1 View A2 - A2;

[0018] Figure 4 Schematic diagram of the trailing support system for the slurry tunneling mode of the earth pressure / slurry shield machine;

[0019] Figure 5 is Figure 4 View B1 - B1;

[0020] Figure 6 is Figure 4 View B2 - B2.

[0021] In the figure:

[0022] 1. Screw conveyor; 2. Erector support beam; 3. Floating support; 4. Screw conveyor slag outlet; 5. Belt conveyor slag receiving port; 6. Inclined section of belt conveyor; 7. Top bracket; 8. First trailer; 9. Connection bridge; 10. Horizontal section of belt conveyor; 11. Fourth trailer; 12. Belt conveyor slag discharging device; 13. Traction oil cylinder; 14. Front mounting seat; 15. Rubber - coated wheel; 16. Right - hand bottom platform; 17. Crusher; 18. Crane; 19. Dilution tank; 20. Muck truck; 21. Fifth trailer; 22. Traction oil cylinder; 23. Mud circulation system; 24. Mud pipe extension device; 25. Middle bottom platform; 26. Slide rail; 27. Belt conveyor support seat; 28. Hand - operated hoist. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0024] A trailing support system that satisfies the co - existence of earth pressure and slurry double - mode. It is connected behind the shield machine main body through the traction oil cylinder 13 and runs synchronously with the main body; the trailing support system mainly includes five trailers connected in sequence from front to back. Among them, the front - most first trailer 8 and the second trailer are connected as a whole through the connection bridge 9, and the second trailer to the fifth trailer are movably connected through pin shafts; among the five trailers, the present invention only improves the first trailer on the basis of the existing structure.

[0025] The first trailer 8 has a frame structure and is connected to the segment erector girder 2 through two towing cylinders 13. The segment erector is one of the key components of the shield machine and is used to assemble precast reinforced concrete segments on the inner wall of the excavated tunnel. This technology is well-known and will not be elaborated here. The bottom of the first trailer 8 is provided with rubber-coated wheels 15, which can travel on the inner wall of the assembled segments. Under the towing of the towing cylinders 13, the rear support system and the shield machine main body move forward synchronously.

[0026] The first trailer 8 mainly includes a top bracket 7, a front mounting seat 14, a bottom right platform 16, a bottom middle platform 25, slide rails 26, a crane 18 and a hand winch 28. The front mounting seat 14 is arranged parallel to the screw conveyor 1 and has an inclination angle of 20° consistent with that of the screw conveyor 1. The setting of the front mounting seat 14 provides an installation space for the belt conveyor slag receiving port 5 below the slag discharge port 4 of the screw conveyor. The top bracket 7 is installed at the upper end of the first trailer 8 and can temporarily store the removed belt conveyor slag receiving port 5 and the inclined section 6 of the belt conveyor. The hand winch 28 is hung on the top bracket 7. The bottom right platform 16 is connected to the bottom right side of the first trailer 8 and is used to temporarily store the crusher 17 lifted by the crane 18. The crane 18 is arranged on the top of the first trailer 8 and on the same side as the bottom right platform 16, and can lift and retrieve the crusher 17 to complete its temporary storage. The bottom middle platform is fixed to the bottom of the first trailer 8, and the two slide rails 26 are located on the top of the bottom middle platform for the sliding transfer and temporary storage of the dilution tank 19.

[0027] The present invention also discloses a working method for a rear support system that satisfies the coexistence of earth pressure and slurry balance modes, including the following steps:

[0028] S1. During earth pressure mode tunneling, the muck in the soil chamber is conveyed by the screw conveyor 1 in a spiral manner, and the muck is discharged from the slag discharge port 4 of the screw conveyor to the belt conveyor slag receiving port 5, and then conveyed to the belt conveyor slag discharging device 12 through the inclined section 6 and the horizontal section 10 of the belt conveyor, and then transferred to the muck truck 20 and sent to the ground. At this time, the crusher 17 in the slurry balance tunneling mode is arranged on the bottom right platform 16 of the first trailer 8 for standby storage. The dilution tank 19 is arranged at the rear part of the bottom middle platform 25 of the first trailer 8 for standby storage. In this earth pressure mode, the belt conveyor slag receiving port 5 is arranged directly below the slag discharge port 4 of the screw conveyor. The belt conveyor slag receiving port 5 and the inclined section 6 of the belt conveyor are installed on the first trailer 8 through the belt conveyor support seat 27 and the hand winch 28. The horizontal section 10 of the belt conveyor is arranged on the connecting bridge 9 to the fourth trailer 11, and the belt conveyor slag discharging device 12 is arranged on the top of the fourth trailer 11. The front mounting seat 14 is connected to the slag discharge port 4 of the screw conveyor through the floating support 3, realizing the non-fixed connection between the screw conveyor 1 and the first trailer 8.

[0029] S2. When switching from the earth pressure mode to the slurry mode, the belt conveyor slag receiving opening 5 and the inclined section 6 of the belt conveyor originally installed on the first trailer 8 can be removed, and suspended to the top bracket 7 of the first trailer 8 for temporary storage by using a hand chain hoist 28; with the help of a crane 18, the crusher 17 stored on the right platform 16 at the bottom of the first trailer 8 is lifted and transported to the dilution tank 19. After assembly, it slides along the two slide rails 26 on the middle platform 25 at the bottom of the first trailer 8 to directly below the screw conveyor slag outlet 4, and the installation of the crusher 17 and the screw conveyor slag outlet 4 is completed, thus completing the switching from the earth pressure to the slurry tunneling mode;

[0030] S3. During the slurry mode tunneling, the slurry in the soil chamber is conveyed spirally by the screw conveyor 1, and the slurry is discharged from the screw conveyor slag outlet 4. After being preliminarily crushed by the crusher 17 and re - adjusted in the dilution tank 19, the slurry is continuously fed and discharged through the slurry circulation system 23, and the slurry pipe extension device 24 compensates for the slurry pipeline during the tunneling process until it is transported to the ground for re - treatment of the slurry; at this time, the belt conveyor slag receiving opening 5 and the inclined section 6 of the belt conveyor in the earth pressure tunneling mode are stored on the top bracket 7 of the first trailer 8 by using a hand chain hoist 28 for standby; in this slurry mode, the front mounting seat 14 of the first trailer 8 is connected to the screw conveyor 1 through a floating support 3, and the screw conveyor slag outlet 4 and the crusher 17 are connected by bolts; the dilution tank 19 is placed on the slide rail 26 of the middle platform 25 at the bottom of the first trailer 8, and one end of the dilution tank 19 is connected to the crusher 17 by bolts, and the other end is connected to the slurry circulation pipeline;

[0031] S4. When switching from the slurry mode to the earth pressure mode, the crusher 17 and the dilution tank 19 originally installed directly below the screw conveyor slag outlet 4 are removed. With the help of the slide rail 26, the crusher 17 and the dilution tank 19 are slid to the storage position. The dilution tank 19 is temporarily stored at the rear of the middle platform 25 at the bottom of the first trailer 8, and the crusher 17 is lifted and transported to the right platform 16 at the bottom of the first trailer 8 for temporary storage by using a crane 18. At the same time, the belt conveyor slag receiving opening 5 and the inclined section 6 of the belt conveyor originally stored on the top bracket 7 are installed in place, thus completing the switching from the slurry to the earth pressure tunneling mode.

[0032] The special layout of the rear - matching system of the present invention and the special structure of the first trailer can realize the spatial co - existence of the belt conveyor slag receiving opening, the inclined section of the belt conveyor in the earth pressure mode and the crusher and the dilution tank in the slurry mode in two states of installation and temporary storage under the earth pressure / slurry dual - mode. It effectively solves the problem of component co - existence under the earth pressure / slurry dual - mode. At the same time, the mode switching no longer requires the use of battery - powered vehicles to transfer components inside / outside the tunnel, greatly saving the time and cost of mode switching and improving the construction efficiency of mode switching of the earth pressure / slurry dual - mode shield machine.

[0033] 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 perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A trailing equipment system that satisfies the coexistence of earth pressure and slurry balance modes, which is connected behind the main machine of the shield machine through towing cylinders and operates synchronously with the main machine; characterized in that: The rear auxiliary system includes five trailers connected in sequence from front to back. Among them, a connecting bridge connects the first trailer at the front end and the second trailer into an integrated unit; the second trailer to the fifth trailer are movably connected by pin shafts; The first trailer is connected to the assembly machine support beam through two towing cylinders; rubber-coated wheels are provided at the bottom of the first trailer for traveling on the inner wall of the pre-assembled segment. Under the towing of the towing cylinders, the synchronous forward movement of the rear auxiliary system and the main body of the shield machine is realized; The first trailer includes a top bracket, a front mounting seat, a bottom right platform, a bottom middle platform, a slide rail, a crane and a hand-operated hoist; the front mounting seat is arranged parallel under the screw conveyor, and the front mounting seat provides an installation space for the belt conveyor slag receiving port under the slag discharge port of the screw conveyor; the top bracket is installed at the upper end of the first trailer for temporarily storing the removed belt conveyor slag receiving port and the inclined section of the belt conveyor; the hand-operated hoist is hung on the top bracket; the bottom right platform is connected to the bottom right side of the first trailer for temporarily storing the crusher lifted by the crane; the crane is arranged on the top of the first trailer and on the same side as the bottom right platform, and can lift the crusher to complete its temporary storage; The bottom middle platform is fixed to the bottom of the first trailer, and two slide rails are located on the top of the bottom middle platform for the sliding transfer and temporary storage of the dilution tank; The front mounting seat of the first trailer is connected to the slag discharge port of the screw conveyor through a floating support, realizing the non-fixed connection between the screw conveyor and the first trailer.

2. The working method of the rear support system satisfying the coexistence of earth pressure and slurry water double modes according to claim 1, characterized in that It includes the following steps: S1. During the tunneling in the earth pressure mode, the muck in the soil chamber is spirally conveyed by the screw conveyor, and the muck is discharged from the slag discharge port of the screw conveyor to the belt conveyor slag receiving port, and is conveyed to the belt conveyor slag discharge device through the inclined section of the belt conveyor and the horizontal section of the belt conveyor, and then transferred to the muck truck and sent to the ground; at this time, the crusher in the slurry tunneling mode is arranged on the bottom right platform of the first trailer for standby storage; the dilution tank is arranged on the bottom middle platform of the first trailer for standby storage; in this earth pressure mode, the belt conveyor slag receiving port is arranged directly below the slag discharge port of the screw conveyor, and the belt conveyor slag receiving port and the inclined section of the belt conveyor are installed on the first trailer through the belt conveyor support seat and the hand-operated hoist, and the horizontal section of the belt conveyor is arranged on the connecting bridge to the fourth trailer, and the belt conveyor slag discharge device is arranged on the top of the fourth trailer; the front mounting seat is connected to the slag discharge port of the screw conveyor through a floating support, realizing the non-fixed connection between the screw conveyor and the first trailer; S2. When switching from the earth pressure mode to the slurry mode, the belt conveyor slag receiving port and the inclined section of the belt conveyor originally installed on the first trailer are removed and hung on the top bracket of the first trailer by the hand-operated hoist for temporary storage; with the help of the crane, the crusher stored on the bottom right platform of the first trailer is lifted to the dilution tank, and after assembly, it slides along the two slide rails on the bottom middle platform of the first trailer to directly below the slag discharge port of the screw conveyor to install the crusher and the slag discharge port of the screw conveyor, completing the switching from the earth pressure to the slurry tunneling mode; S3. During the slurry shield tunneling mode, the slurry in the soil bin is conveyed by the screw conveyor, and the slurry is discharged from the slag outlet of the screw conveyor. After being preliminarily crushed by the crusher and re-slurry adjusted in the dilution tank, the slurry is continuously fed and discharged through the slurry circulation system; the slurry pipe extension device compensates for the slurry pipeline during tunneling until it is conveyed to the ground for re-treatment of the slurry; at this time, the belt conveyor slag receiving port and the inclined section of the belt conveyor in the earth pressure tunneling mode are stored on the top bracket of the first trailer by means of a hand chain hoist for standby; in this slurry shield mode, the front mounting seat of the first trailer is connected to the screw conveyor through a floating support, and the slag outlet of the screw conveyor is bolted to the crusher; the dilution tank is placed on the slide rail of the middle platform at the bottom of the first trailer, and one end of the dilution tank is bolted to the crusher and the other end is connected to the slurry circulation pipeline; S4. When switching from the slurry shield mode to the earth pressure mode, the crusher and the dilution tank originally installed directly below the slag outlet of the screw conveyor are removed, and the crusher and the dilution tank are slid to the storage position by means of the slide rail. The dilution tank is temporarily stored at the rear of the middle platform at the bottom of the first trailer, and the crusher is temporarily stored on the right platform at the bottom of the first trailer by means of a crane. At the same time, the belt conveyor slag receiving port and the inclined section of the belt conveyor originally stored on the top bracket of the first trailer are installed in place to complete the switching from the slurry shield to the earth pressure tunneling mode.

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