Tail shield synchronous double-liquid grouting device

Abstract

The utility model discloses a tail shield synchronous double-liquid grouting device. The device comprises a pipeline joint; the first input interface is arranged on the pipeline joint; the first grouting pipeline is connected with the first input interface; the second input interface is arranged on the pipeline joint; the second grouting pipeline is connected with the second input interface; the one-way valve is arranged in the second input interface and is connected with the second grouting pipeline; the first output interface is arranged on the pipeline joint; the double-liquid mixing pipeline is detachably connected with the first output interface; the double-liquid injection pipeline is arranged at the output end of the double-liquid mixing pipeline; the cleaning pipeline is connected with the double-liquid injection pipeline; and the channel switching mechanism is arranged in the double-liquid injection tube. According to the technical scheme, double-liquid cement mortar injection can be carried out, the cement mortar is effectively prevented from blocking a pipeline, convenient cleaning and maintenance of the pipeline are achieved, and smoothness and safety of shield construction are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tail shield grouting equipment in shield construction, and particularly to a tail shield synchronous double-fluid grouting device. Background Technique

[0002] A shield machine is a modern heavy engineering equipment specially used for urban tunnel engineering construction. With the large-scale construction of subways at home and abroad, the shield tunneling method has gradually become the main means of urban underground construction due to its own advantages. Since there must be a certain space left between the tunnel lining segment and the tail shield of the shield machine to install the tail shield seal, the excavation diameter of the shield machine needs to be larger than the shield diameter to ensure the smooth passage of the shield machine. Therefore, there will inevitably be a certain space between the excavation diameter of the shield machine and the outer diameter of the segment. After the shield machine passes through, the gap between the excavation diameter and the outer diameter of the segment must be filled with some medium to avoid ground collapse or subsidence.

[0003] At present, the medium used by the shield machine to fill this gap space is generally single-fluid cement mortar, but the single-fluid cement mortar method has certain limitations. First, the setting time of the single-fluid cement mortar is relatively long, which will cause the cement mortar to be in a liquid state for a long time in the segment gap, resulting in a large buoyancy of the liquid on the segment and causing the segment to float. Second, after the grouting is completed, the single-fluid cement mortar stays in the tail shield channel for a long time, which will cause solidification and block the grouting pipeline. Since the end of the tail shield is the position where the tail shield seal and the segment are installed, it is not possible to manually dredge and clean the blocked grouting channel. Once blocked, it will seriously affect the tunneling construction of the equipment. In the prior art, there is also a method of using a device for double-fluid grouting. After the two fluids are mixed, the setting time of the cement slurry is very short, which can effectively solve the problem of long setting time of single-fluid grouting, but it also exacerbates the problem of pipeline blockage and makes it difficult to clean and maintain the pipeline.

[0004] Therefore, how to provide a tail shield synchronous double-fluid grouting device that can inject double-fluid cement mortar, effectively prevent the cement mortar from blocking the pipeline, realize the convenient cleaning and maintenance of the pipeline, and ensure the smoothness and safety of shield construction has become an urgent technical problem for those skilled in the art. Content of the Utility Model

[0005] To solve the above technical problems, the utility model provides a tail shield synchronous double-fluid grouting device that can inject double-fluid cement mortar, effectively prevent the cement mortar from blocking the pipeline, and realize the convenient cleaning and maintenance of the pipeline.

[0006] The technical solution provided by the utility model is as follows:

[0007] The utility model provides a tail shield synchronous double - liquid grouting device, including: a pipeline joint; a first input interface arranged on the pipeline joint; a first grouting pipeline connected to the first input interface; a second input interface arranged on the pipeline joint; a second grouting pipeline connected to the second input interface; a one - way valve arranged in the second input interface and connected to the second grouting pipeline; a first output interface arranged on the pipeline joint; a double - liquid mixing pipeline detachably connected to the first output interface; a double - liquid injection pipeline arranged at the output end of the double - liquid mixing pipeline; a cleaning pipeline connected to the double - liquid injection pipeline; and a channel switching mechanism arranged in the double - liquid injection pipe.

[0008] Further, in a preferred embodiment of the present utility model, the channel switching mechanism includes:

[0009] A switching valve core arranged in the double - liquid injection pipeline;

[0010] A telescopic piston rod connected to the switching valve core;

[0011] A driving oil cylinder arranged at the end of the telescopic piston rod.

[0012] Further, in a preferred embodiment of the present utility model, the tail shield synchronous double - liquid grouting device further includes:

[0013] A connection joint arranged in the first output interface;

[0014] The connection joint is detachably connected to the double - liquid mixing pipeline.

[0015] Further, in a preferred embodiment of the present utility model, the tail shield synchronous double - liquid grouting device further includes a sealing assembly arranged on the connection joint.

[0016] Further, in a preferred embodiment of the present utility model, the first grouting pipeline is specifically a segmented pipeline or an integral pipeline.

[0017] Further, in a preferred embodiment of the present utility model, the first grouting pipeline and the second grouting pipeline are specifically steel pipes or pressure hoses.

[0018] Further, in a preferred embodiment of the present utility model, an injection interface is arranged at the output end of the double - liquid injection pipeline, and the injection interface is connected to the side wall of the end of the tail shield.

[0019] Further, in a preferred embodiment of the present utility model, the outer diameter of the switching valve core is the same as the inner diameter of the double - liquid injection pipeline, and the switching valve core abuts against the inner pipe wall of the double - liquid injection pipeline;

[0020] A mortar input interface for connecting the double-fluid mixing pipeline is provided on the double-fluid injection pipeline;

[0021] A clear water input interface for connecting the cleaning pipeline is provided on the double-fluid injection pipeline;

[0022] The mortar input interface is located at the front end of the clear water input interface and is close to the injection interface.

[0023] Further, in a preferred embodiment of the present invention, the pipeline joint is specifically a Y-shaped tee.

[0024] Further, in a preferred embodiment of the present invention, the tail shield synchronous double-fluid grouting device further includes:

[0025] A first transfer pump provided on the first grouting pipeline and the second grouting pipeline;

[0026] A grouting system connected to the first transfer pump;

[0027] A second transfer pump provided on the cleaning pipeline;

[0028] A cleaning system connected to the second transfer pump.

[0029] A tail shield synchronous double-fluid grouting device provided by the present utility model includes: a pipeline joint; a first input interface arranged on the pipeline joint; a first grouting pipeline connected to the first input interface; a second input interface arranged on the pipeline joint; a second grouting pipeline connected to the second input interface; a check valve arranged in the second input interface and connected to the second grouting pipeline; a first output interface arranged on the pipeline joint; a double-fluid mixing pipeline detachably connected to the first output interface; a double-fluid injection pipeline arranged at the output end of the double-fluid mixing pipeline; a cleaning pipeline connected to the double-fluid injection pipeline; and a channel switching mechanism arranged in the double-fluid injection pipeline. In the tail shield synchronous double-fluid grouting device of the present utility model, its structural main body is composed of the first grouting pipeline, the second grouting pipeline, the pipeline joint, the check valve, the double-fluid mixing pipeline, the double-fluid injection pipeline, the channel switching mechanism, and the cleaning pipeline; wherein, the pipeline joint is installed at the end of the tail shield, and is respectively connected to the first grouting pipeline and the second grouting pipeline through the first input interface and the second input interface. The first grouting pipeline is used to transport the first liquid, and the second grouting pipeline is used to transport liquid B; the first output interface is arranged on the pipeline joint, and the double-fluid mixing pipeline is installed on this interface and is detachably connected to it, so that the first grouting pipeline and the second grouting pipeline can be conveniently retracted for maintenance when a failure occurs; the two liquids input from the grouting pipelines converge in the pipeline joint and then flow into the double-fluid mixing pipeline, and are mixed in the pipeline and then output; and, the check valve is arranged in the second input interface, and the check valve can prevent the first liquid or the solidified matter after the mixture of the first liquid and liquid B from entering the second grouting pipeline to prevent the second grouting pipeline from being blocked; and the double-fluid injection pipeline is arranged at the output end of the double-fluid mixing pipeline, and the channel switching mechanism is installed in the double-fluid injection pipeline. During normal operation, the channel switching mechanism is used to switch to the injection mode. At this time, the double-fluid mixing pipeline is connected to the injection port of the double-fluid injection pipeline, and the double-fluid mortar can be output from the injection port and filled into the gap between the excavation diameter and the outer diameter of the segment to complete the double-fluid grouting operation; secondly, the cleaning pipeline is arranged on the double-fluid injection pipeline. When the grouting operation is completed, the injection port can be blocked by using the channel switching mechanism. At this time, the cleaning pipeline can be connected to the double-fluid mixing pipeline, and the first grouting pipeline can be conveniently cleaned by injecting clean water into the cleaning pipeline, avoiding the solidification and blockage caused by the long-term retention of the first liquid in the pipeline. It can be seen that the technical solution provided by the present utility model, compared with the prior art, can perform double-fluid cement mortar injection, effectively prevent the cement mortar from blocking the pipeline, realize the convenient cleaning and maintenance of the pipeline, and ensure the smoothness and safety of the shield construction. Brief Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0031] Figure 1 It is a schematic structural diagram of the tail shield synchronous double-fluid grouting device provided by the embodiment of the present invention;

[0032] Figure 2 It is an installation schematic diagram of the channel switching mechanism provided by the embodiment of the present invention;

[0033] Figure 3 It is an installation schematic diagram of the pipeline joint provided by the embodiment of the present invention;

[0034] Figure 4 It is an installation schematic diagram of the one-way valve provided by the embodiment of the present invention;

[0035] Figure 5 It is a schematic diagram of the working steps of the tail shield synchronous double-fluid grouting device provided by the embodiment of the present invention. Detailed implementation manners

[0036] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "first", "second", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" and "several" is two or more, unless otherwise specifically defined.

[0040] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementable conditions of the present utility model. Therefore, they do not have technical essential significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present utility model.

[0041] As Figures 1 to 5 shown, the tail shield synchronous double-fluid grouting device provided by the embodiment of the present utility model includes: a pipeline joint 1, a first input interface 2, a first grouting pipeline 3, a second input interface 4, a second grouting pipeline 5, a check valve 6, a first output interface 7, a double-fluid mixing pipeline 8, a double-fluid injection pipeline 9, a channel switching mechanism 10, and the cleaning pipeline 11.

[0042] The utility model provides a tail shield synchronous double - liquid grouting device, which is applicable to the mortar filling operation for the gap between the excavation diameter of a shield machine and the outer diameter of a segment. Specifically, it includes: a pipeline joint 1; a first input interface 2 arranged on the pipeline joint 1; a first grouting pipeline 3 connected to the first input interface 2; a second input interface 4 arranged on the pipeline joint 1; a second grouting pipeline 5 connected to the second input interface 4; a one - way valve 6 arranged in the second input interface 4 and connected to the second grouting pipeline 5; a first output interface 7 arranged on the pipeline joint 1; a double - liquid mixing pipeline 8 detachably connected to the first output interface 7; a double - liquid injection pipeline 9 arranged at the output end of the double - liquid mixing pipeline 8; a cleaning pipeline 11 connected to the double - liquid injection pipeline 9; and a channel switching mechanism 10 arranged in the double - liquid injection pipeline. The technical solution provided by the utility model, compared with the prior art, can perform double - liquid cement mortar injection, effectively prevent the cement mortar from blocking the pipeline, realize the convenient cleaning and maintenance of the pipeline, and ensure the smoothness and safety of shield construction.

[0043] The following specifically elaborates on the technical solution of the utility model in combination with embodiments:

[0044] Specifically, in the embodiment of the utility model, the channel switching mechanism 10 includes: a switching valve core 10 - 1 arranged in the double - liquid injection pipeline 9; a telescopic piston rod 10 - 2 connected to the switching valve core 10 - 1; and a driving oil cylinder 10 - 3 arranged at the end of the telescopic piston rod 10 - 2.

[0045] As Figure 2 shown, in the embodiment of the utility model, the channel switching mechanism 10 is used to switch the operation mode of the device according to actual needs, including a grouting mode and a cleaning mode; the main structure of the channel switching mechanism 10 consists of the switching valve core 10 - 1, the telescopic piston rod 10 - 2, and the driving oil cylinder 10 - 3. Among them, the switching valve core 10 - 1 is arranged in the double - liquid injection pipeline 9, and it can move back and forth in the pipeline to realize the switching between pipeline injection and pipeline cleaning. The power of the switching valve core 10 - 1 comes from the driving oil cylinder 10 - 3, and the telescopic piston rod 10 - 2 is used to transmit the telescopic power; under the action of the driving oil cylinder 10 - 3, the telescopic piston rod 10 - 2 drives the switching valve core 10 - 1 to move, realizing the switching between the grouting mode and the cleaning mode.

[0046] Specifically, in the embodiment of the utility model, the tail shield synchronous double - liquid grouting device further includes: a connection joint 12 arranged in the first output interface 7; the connection joint 12 is detachably connected to the double - liquid mixing pipeline 8.

[0047] As Figure 3As shown, the connecting joint 12 is used to detachably connect the pipe joint 1 and the double-fluid mixing pipe 8; in the embodiment of the present invention, the connecting joint 12 is specifically an insertion-type connecting joint 12. In case of a failure, the first grouting pipe 3 and the second grouting pipe 5 can utilize the connecting joint 12 to be disassembled and retracted to a position convenient for maintenance at the front end of the tail shield, so that in the most extreme case, that is, when the grouting channel is completely blocked, there is still a way to carry out maintenance or replacement, rather than being helpless and affecting the normal progress of the construction.

[0048] Specifically, in the embodiment of the present invention, the tail shield synchronous double-fluid grouting device further includes: a sealing assembly 13 provided on the connecting joint 12.

[0049] Specifically, in the embodiment of the present invention, the pipe joint 1 is specifically a Y-shaped tee.

[0050] Specifically, in the embodiment of the present invention, the first grouting pipe 3 is specifically a segmented pipe or an integral pipe.

[0051] Specifically, in the embodiment of the present invention, the first liquid for grouting (hereinafter referred to as liquid A) and the second liquid (hereinafter referred to as liquid B) will converge in the Y-shaped tee, and the Y-shaped tee can be detached from the double-fluid mixing pipe 8 by using the connecting joint 12. The first grouting pipe 3 and the second grouting pipe 5 are retracted towards the front end of the tail shield, facilitating the withdrawal of the first and second grouting pipelines for replacement or cleaning. However, it may be restricted by the space for its retraction. Therefore, the first grouting pipe 3 can determine its pipe structure according to the retraction space, and can be designed as a segmented pipe or an integral pipe.

[0052] Specifically, in the embodiment of the present invention, the first grouting pipe 3 and the second grouting pipe 5 are specifically steel pipes or pressure hoses.

[0053] Among them, the first grouting pipe 3 and the second grouting pipe 5 can be the steel pipes or pressure hoses; in the embodiment of the present invention, since the retraction of the second grouting pipe 5 is together with the Y-shaped tee and it does not need to play a structural support role, and the pressure hose has the characteristics of flexibility and easy disassembly, the second grouting pipe 5 generally selects the pressure hose.

[0054] Specifically, in the embodiment of the present invention, an injection interface is provided at the output end of the double-fluid injection pipe 9, and the injection interface is connected to the side wall of the end of the tail shield.

[0055] Specifically, in the embodiment of the present utility model, the outer diameter of the switching valve core 10-1 is the same as the inner diameter of the dual-fluid injection pipeline 9, and the switching valve core 10-1 abuts against the inner pipe wall of the dual-fluid injection pipeline 9; a mortar input interface for connecting the dual-fluid mixing pipeline 8 is provided on the dual-fluid injection pipeline 9; a clear water input interface for connecting the cleaning pipeline is provided on the dual-fluid injection pipeline 9; the mortar input interface is located at the front end of the clear water input interface, close to the injection interface.

[0056] Specifically, a mortar input interface and a clear water input interface are provided on the dual-fluid injection pipeline 9, and the mortar input interface is located at the front end of the clear water input interface, facilitating the switching valve core 10-1 to switch channels; secondly, in the dual-fluid mixing pipeline 8, since the setting time after the dual-fluid grouting is mixed is extremely short, the closer the dual-fluid mixing point is to the end of the tail shield, the better. Therefore, in the implementation of the present utility model, the pipeline joint 1 is installed at the end of the tail shield, and the output end of the dual-fluid mixing pipeline 8 is also arranged close to the injection interface, so that after the dual-fluid is mixed, it can be quickly output from the injection interface, reducing the residence time in the pipeline and the risk of pipeline blockage; and by using the switching valve core 10-1, when the switching valve core 10-1 is pushed towards the tail end, the switching valve core 10-1 blocks the injection interface, and the mortar input interface is communicated with the clear water input interface, and the first grouting pipeline 3 can be cleaned with clear water. When the switching valve core 10-1 retracts towards the front end, the switching valve core 10-1 opens the injection interface and restricts the access of the clear water input interface to the pipeline. At this time, the mortar input interface is communicated with the injection interface, and the injection of liquid A can be realized. When the second grouting pipeline 5 also injects liquid B, dual-fluid injection is achieved during grouting.

[0057] Specifically, in the embodiment of the present utility model, the tail shield synchronous dual-fluid grouting device further includes: a first delivery pump provided on the first grouting pipeline 3 and the second grouting pipeline 5; a grouting system connected to the first delivery pump; a second delivery pump provided on the cleaning pipeline 11; and a cleaning system connected to the second delivery pump.

[0058] As Figure 5 shown, in the embodiment of the present utility model, the first delivery pump, the grouting system, the second delivery pump and the cleaning system are used to assist in realizing pipeline grouting and pipeline cleaning operations; when performing dual-fluid grouting, as Figure 5As shown, the switching spool 10-1 retracts forward to the injection mode state, and the first grouting pipeline 3 is connected to the injection interface. At this time, the first delivery pump and the grouting system are turned on, and liquid A and liquid B are injected forward and backward, so that the two liquids are mixed in the dual-liquid mixing pipeline 8 and injected. Maintain this state for dual-liquid grouting. Subsequently, when the grouting work is completed and the grouting action can be stopped, first stop injecting liquid B, maintain injecting liquid A for a period of time, and use liquid A to flush out the mixed liquid in the dual-liquid mixing raceway. After maintaining for a short period of time, stop injecting liquid A to complete the pipeline grouting operation; then push the switching spool 10-1 backward to the cleaning mode state, the first grouting pipeline 3 is communicated with the cleaning pipeline 11, turn on the cleaning system to inject clean water, and use the clean water to flush the liquid in the first grouting pipeline 3 to avoid solidification and blockage caused by the long-term retention of the liquid in the pipeline. Finally, stop injecting clean water to complete the cleaning and wait for the next grouting requirement.

[0059] As described above, the tail shield synchronous double-fluid grouting device provided by the embodiments of the present invention is mainly applied to the filling operation of the gap between the excavation diameter of the shield machine and the outer diameter of the segment. It solves the problem that the setting time of the single-fluid cement mortar is relatively long, and the long-term residence of the single-fluid cement mortar in the tail shield channel after grouting completion will cause solidification and blockage of the pipeline. Using double-fluid grouting will exacerbate the pipeline blockage and make it difficult to clean and maintain the pipeline. In the tail shield synchronous double-fluid grouting device described in the present invention, its structural main body is composed of the first grouting pipeline 3, the second grouting pipeline 5, the pipeline joint 1, the one-way valve 6, the double-fluid mixing pipeline 8, the double-fluid injection pipeline 9, the channel switching mechanism 10 and the cleaning pipeline 11; wherein, the pipeline joint 1 is installed at the end of the tail shield, and it is respectively connected to the first grouting pipeline 3 and the second grouting pipeline 5 through the first input interface 2 and the second input interface 4. The first grouting pipeline 3 is used to transport liquid A, and the second grouting pipeline 5 is used to transport liquid B; the first output interface 7 is provided on the pipeline joint 1, and the double-fluid mixing pipeline 8 is installed on this interface, which is detachably connected to the double-fluid mixing pipeline 8, and can be conveniently retracted to the first grouting pipeline 3 and the second grouting pipeline 5 for maintenance when a failure occurs; the two liquids input from the grouting pipeline converge in the pipeline joint 1 and then flow into the double-fluid mixing pipeline 8, and are mixed in the pipeline and then output; and, the one-way valve 6 is provided in the second input interface 4, and the one-way valve 6 can prevent liquid A or the solidified matter after the mixture of liquid A and liquid B from entering the second grouting pipeline 5 to prevent the second grouting pipeline 5 from being blocked; and a double-fluid injection pipeline 9 is provided at the output end of the double-fluid mixing pipeline 8, and the channel switching mechanism 10 is installed in the double-fluid injection pipeline 9. During normal operation, the channel switching mechanism 10 is used to switch to the injection mode. At this time, the double-fluid mixing pipeline 8 is connected to the injection port of the double-fluid injection pipeline 9, and the double-fluid mortar can be output from the injection port and filled into the gap between the excavation diameter and the outer diameter of the segment to complete the double-fluid grouting operation; secondly, the cleaning pipeline 11 is provided on the double-fluid injection pipeline 9. When the grouting operation is completed, the injection port is blocked by the channel switching mechanism 10. At this time, the cleaning pipeline 11 can be connected to the double-fluid mixing pipeline 8. After the cleaning pipeline 11 injects clean water, the first grouting pipeline 3 can be conveniently cleaned to avoid solidification and blockage caused by the long-term residence of liquid A in the pipeline;In the actual application process of the tail shield synchronous double-fluid grouting device, when double-fluid grouting is carried out, the switching spool 10-1 retracts forward to the injection mode state, and the first grouting pipeline 3 is connected to the injection interface. At this time, the first delivery pump and the grouting system are turned on, and liquid A and liquid B are injected before and after, so that the two liquids are mixed in the double-fluid mixing pipeline 8 and injected. Keep this state for double-fluid grouting. Subsequently, when the grouting work is completed and the grouting action can be stopped, first stop injecting liquid B, maintain injecting liquid A for a period of time, use liquid A to flush and inject the mixed liquid in the double-fluid mixing raceway, and maintain it for a short period of time, then stop injecting liquid A. At this time, the pipeline grouting operation is completed; then, the switching spool 10-1 is pushed backward to the cleaning mode state, the first grouting pipeline 3 is communicated with the cleaning pipeline 11, the second delivery pump and the cleaning system are turned on to inject clean water, and the liquid in the first grouting pipeline 3 is flushed away by the clean water to avoid solidification and blockage caused by the long-term retention of the liquid in the pipeline, and the pipeline cleaning operation is completed; finally, stop injecting clean water to complete the cleaning and wait for the next grouting requirement. It can be seen that the technical solution provided by the present invention, compared with the prior art, can carry out double-fluid cement mortar injection, effectively prevent the cement mortar from blocking the pipeline, realize the convenient cleaning and maintenance of the pipeline, and ensure the smoothness and safety of the shield construction.;

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tail shield synchronous double liquid grouting device, characterized in that: include: Pipeline joints; A first input interface provided on the pipe joint; a first grouting pipe connected to the first input interface; A second input interface provided on the pipe joint; a second grouting pipe connected to the second input interface; A one-way valve disposed in the second input interface and connected to the second grouting pipeline; A first output interface provided on the pipe joint; A dual-liquid mixing pipeline detachably connected to the first output interface; A double-liquid injection pipeline arranged at the output end of the double-liquid mixing pipeline; A cleaning pipeline connected to the double-liquid injection pipeline and a channel switching mechanism installed in the double-liquid injection tube.

2. The tail shield synchronous double liquid grouting device according to claim 1 is characterized in that: The channel switching mechanism comprises: A switching valve core disposed in the dual-liquid injection pipeline; A telescopic piston rod connected to the switching valve core; A driving oil cylinder is arranged at the end of the telescopic piston rod.

3. The tail shield synchronous double liquid grouting device according to claim 1 is characterized in that: The tail shield synchronous double-liquid grouting device also includes: A connection connector disposed in the first output interface; The connecting joint is detachably connected to the double-liquid mixing pipeline.

4. The tail shield synchronous double liquid grouting device according to claim 3 is characterized in that: The tail shield synchronous double-liquid grouting device also includes: A sealing assembly is arranged on the connecting joint.

5. The tail shield synchronous double liquid grouting device according to claim 1 is characterized in that: The first grouting pipe is specifically a segmented pipe or an integrated pipe.

6. The tail shield synchronous double liquid grouting device according to claim 5 is characterized in that: The first grouting pipeline and the second grouting pipeline are specifically steel pipes or pressure hoses.

7. The tail shield synchronous double liquid grouting device according to claim 2 is characterized in that: The output end of the double-liquid injection pipeline is provided with an injection interface, and the injection interface is connected to the side wall of the tail shield end.

8. The tail shield synchronous double liquid grouting device according to claim 7 is characterized in that: The outer diameter of the switching valve core is the same as the inner diameter of the double-liquid injection pipeline, and the switching valve core abuts against the inner tube wall of the double-liquid injection pipeline; A mortar input interface provided on the dual-liquid injection pipeline and used for connecting to the dual-liquid mixing pipeline; A clean water input interface provided on the double-liquid injection pipeline and used for connecting to the cleaning pipeline; The mortar input interface is located at the front end of the clean water input interface and close to the injection interface.

9. The tail shield synchronous double liquid grouting device according to claim 1, characterized in that: The pipe joint is specifically a Y-shaped tee.

10. The tail shield synchronous double-liquid grouting device according to any one of claims 1 to 9, characterized in that: The tail shield synchronous double-liquid grouting device also includes: A first delivery pump disposed on the first grouting pipeline and the second grouting pipeline; A grouting system is connected to the first delivery pump; a second delivery pump disposed on the cleaning pipeline; A cleaning system connected to the second delivery pump.

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