CN216767408U

CN216767408U - Double-liquid grouting device for shield and shield machine

Info

Publication number: CN216767408U
Application number: CN202220433950.3U
Authority: CN
Inventors: 岳银鹏; 尹跃峰; 白岩龙; 陈昆鹏; 庞培彦; 王昆; 曹书磊; 杨霖
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2022-03-02
Filing date: 2022-03-02
Publication date: 2022-06-17
Anticipated expiration: 2032-03-02

Abstract

The utility model discloses a double-liquid grouting device for a shield and a shield machine, and solves the problem that grouting of the shield machine in the prior art is easy to block. The double-liquid grouting device for the shield comprises a grouting block, wherein a grouting conversion block is embedded in the grouting block, a liquid pipe A, a liquid pipe B and a grease pipe are arranged on the grouting conversion block in a segmented mode, and the outlet end of the grease pipe corresponds to a hole channel arranged in the grouting block. The double-liquid grouting device adopts the grouting conversion block as A, B liquid pipes connected inside and outside a duct of the shield tail grouting block, and the rear part of the A, B liquid pipe is plugged into the duct of the grouting block, so that the situation that the duct is blocked by grout caused by grouting through the duct is prevented. And injecting grease into the pore channel through the grease pipe, and filling the pore channel in real time to prevent the pore channel from being blocked. And the end of the B liquid pipe is provided with a check valve, when grouting is stopped, the valve port is automatically closed, A, B liquid is prevented from being mixed, and the B liquid pipe is prevented from being blocked.

Description

Double-liquid grouting device for shield and shield machine

Technical Field

The utility model relates to the technical field of grouting of shield tunneling machines, in particular to a double-liquid grouting device for a shield tunneling machine and the shield tunneling machine.

Background

In the tunneling process of the shield tunneling machine, the annular gap between the excavation diameter and the outer diameter of the duct piece is filled with synchronous grouting slurry. As the slurry for grouting needs to be injected along the tail shield through the pipeline, the slurry is easy to agglomerate in the tail shield to block a grouting opening, and the blockage of the grouting opening becomes a common difficult problem in the construction of the shield machine.

In the prior art: if an embedded double-liquid grouting device is adopted in a shield tail synchronous embedded double-liquid grouting device of a shield machine with the publication number of CN 103821539A, in the grouting cleaning process, a large amount of water is consumed due to a long channel needing cleaning, the generated sewage needs to be treated, the slurry at the tail end of the shield tail cannot be cleaned, and the blockage of a grouting opening cannot be effectively prevented.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides a double-liquid grouting device for a shield and a shield machine, and solves the problem that grouting of the shield machine in the prior art is easy to block.

The technical scheme of the utility model is realized as follows: the double-liquid grouting device for the shield comprises a grouting block, wherein a grouting conversion block is embedded in the grouting block, an A liquid pipe, a B liquid pipe and a grease pipe which are arranged in a segmented mode are arranged on the grouting conversion block, and the outlet end of the grease pipe corresponds to a hole channel formed in the grouting block.

As a preferable scheme: the A liquid pipe includes preceding A liquid pipe and back A liquid pipe, and preceding A liquid pipe is connected with the A liquid injection joint that sets up on slip casting conversion piece, and back A liquid pipe is located the pore and is connected with the A liquid output joint that sets up on slip casting conversion piece. Be equipped with first fluting on the outer wall of slip casting piece, preceding A liquid pipe sets up along first fluting.

As a preferable scheme: the B liquid pipe includes preceding B liquid pipe and back B liquid pipe, and preceding B liquid pipe is connected with the B liquid injection joint that sets up on slip casting conversion piece, and back B liquid pipe is located the pore and is connected with the B liquid output joint that sets up on slip casting conversion piece. The tail end of the rear liquid pipe B is provided with a one-way valve; and a second slot is formed in the outer wall of the grouting block, and the front B liquid pipe is arranged along the second slot.

As a preferable scheme: the transition groove is formed in the inner side face of the grouting block, the grouting transition block is fixed in the transition groove, the thickness of the grouting transition block is smaller than or equal to the groove depth of the transition groove, and interference is avoided.

As a preferable scheme: and a grease connecting joint for connecting a grease pipe is arranged outside the grouting conversion block. The cross section of the pore channel is a waist hole, and grease in the grease pipe is filled into the pore channel through the outlet end. At least one grouting conversion block is arranged in the conversion groove, and the specific number of the grouting conversion blocks can be set according to the requirement.

A shield machine comprises a shield body, wherein the shield body is internally provided with a double-liquid grouting device for the shield, and a grouting block of the double-liquid grouting device for the shield is embedded on the inner wall of the shield body.

The double-liquid grouting device adopts the grouting conversion block as A, B liquid pipes connected inside and outside a duct of the shield tail grouting block, and the rear part of the A, B liquid pipe is plugged into the duct of the grouting block, so that the situation that the duct is blocked by grout caused by grouting through the duct is prevented. And injecting grease into the pore channel through the grease pipe, and filling the pore channel in real time to prevent the pore channel from being blocked. And the end of the B liquid pipe is provided with a check valve, when grouting is stopped, the valve port is automatically closed, A, B liquid is prevented from being mixed, and the B liquid pipe is prevented from being blocked. Before the A, B liquid pipe is replaced, grease is injected into the grouting block hole channel and the stratum through the grease hole, so that backflow is prevented. Through above-mentioned structural design, can effectively avoid the problem that the easy jam of shield structure machine slip casting, and new biliquid slip casting device structural design makes the pipeline of jam change more easily, and then improves the efficiency that the shield constructs the construction, reduces because of shutting down the construction risk that clearance slip casting pipe caused.

Drawings

In order to illustrate the embodiments of the utility model more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic view of the internal structure of a double-fluid grouting device for a shield of the present invention.

Fig. 2 is a schematic front view of the double-fluid grouting device for shield tunneling.

Fig. 3 is a view from direction D-D in fig. 2.

Fig. 4 is a schematic view of the connection state of the liquid pipe A and the grouting conversion block.

Fig. 5 is a schematic view of the connection state of the liquid pipe B and the grouting conversion block.

Fig. 6 is a schematic view of the connection state of the grease pipe and the grouting conversion block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, in embodiment 1, a dual-fluid grouting device for a shield includes a grouting block 1, a grouting conversion block 2 is embedded on the grouting block 1, and the grouting conversion block is used as a transition structure of a fluid a, a fluid B and grease; the concrete structure is as follows: be equipped with A liquid pipe 3, B liquid pipe 4 and the grease pipe 5 that the segmentation set up on slip casting conversion piece 2, A liquid pipe 3, B liquid pipe 4 are the segment structure promptly, and slip casting conversion piece is as the middle part connector of A liquid pipe 3 and the middle part connector of B liquid pipe 4, avoids blockking up, the dismouting maintenance of being convenient for simultaneously. The outlet end of the grease tube 5 corresponds to a duct 6 provided in the slip casting block 1. After the liquid A and the liquid B are converted by the grouting conversion block, the tail shield is driven out after the shield tail is mixed, and grouting is finished. Grease enters the pore passage 6 through the grouting conversion block 2 to prevent A, B liquid from flowing backwards in the synchronous grouting process. In the embodiment, the liquid A and the liquid B can both use hoses which are plugged into the pore channels of the grouting blocks of the tail shield, so that the grouting blocks are prevented from being blocked by the grout.

As shown in fig. 2 and 3, in embodiment 2, a two-fluid grouting device for shield tunneling is further optimized based on embodiment 1: the a liquid tube 3 includes a front a liquid tube 31 and a rear a liquid tube 32, and both the front a liquid tube 31 and the rear a liquid tube 32 are axially disposed. The front A liquid pipe 31 is used as the front part of A liquid injection, the back A liquid pipe 32 is used as the back part of A liquid injection, and the front A liquid pipe 31 and the back A liquid pipe 32 are in one-to-one correspondence to form a complete A liquid flowing channel. The front A liquid pipe 31 is connected with an A liquid injection joint 33 arranged on the grouting conversion block 2, and the rear A liquid pipe 32 is positioned in the pore canal 6 and is connected with an A liquid output joint 34 arranged on the grouting conversion block 2. The outer wall of the grouting block 1 is provided with a first slot 35, and the front A liquid pipe 31 is arranged along the first slot 35. Namely, the front A liquid pipe 31 is positioned at the outer side of the grouting block 1, and the rear A liquid pipe 32 is positioned at the inner part of the grouting block 1 and shares a passage with a grease flowing channel.

Further, the B liquid pipe 4 includes a front B liquid pipe 41 and a rear B liquid pipe 42, and both the front B liquid pipe 41 and the rear B liquid pipe 42 are axially arranged; the front B liquid pipe 41 is used as the front part of the B liquid injection, the rear B liquid pipe 42 is used as the rear part of the B liquid injection, and the front B liquid pipe 41 and the rear B liquid pipe 42 are in one-to-one correspondence to form a complete B liquid flow channel. The front B liquid pipe 41 is connected with a B liquid injection joint 43 arranged on the grouting conversion block 2, and the rear B liquid pipe 42 is positioned in the pore passage 6 and is connected with a B liquid output joint 44 arranged on the grouting conversion block 2. Preferably, the end of the rear B-liquid tube 42 is provided with a one-way valve 46; when stopping the slip casting, the valve port self-closing prevents A, B liquid mixture, prevents that B liquid pipe from blockking up. And a second slot 45 is formed in the outer wall of the grouting block 1, and the front B liquid pipe 41 is arranged along the second slot 45. Namely, the front B liquid pipe 41 is positioned on the outer side of the grouting block 1, and the rear B liquid pipe 42 is positioned inside the grouting block 1 and shares a passage with a grease flowing channel.

As shown in fig. 4 and 5, the grease pipeline is connected to the grease injection hole on the conversion block, grease is injected into the pore channel through the grease port, and the rest space in the pore channel after the A, B liquid pipe is removed is filled, so that the A, B liquid is prevented from flowing backwards and blocking the pore channel in the synchronous grouting process. If the liquid pipe A or the liquid pipe B is blocked, grouting is stopped, a large amount of grease is injected through the grease hole, the grease is injected out of the tail shield, a grease area is formed in the rear stroke of the tail of the shield, and a shielding area is formed to prevent stratum silt, slurry injected into the stratum and the like from flowing back to the pore channel of the grouting block. Then the conversion block is dismantled, the A liquid pipe and the B liquid pipe are pulled out, and the pipeline is replaced conveniently and quickly.

Embodiment 3, a shield constructs with biliquid slip casting device, further optimizes the scheme on the basis of embodiment 1 or embodiment 2: a conversion groove 7 is formed in the inner side face of the grouting block 1, the grouting conversion block 2 is fixed in the conversion groove 7, and at least one grouting conversion block 2 is arranged in the conversion groove 7. The switching trough can set up two slip casting conversion pieces 2 in this embodiment, connects one set of A, B liquid pipes and a grease pipe on every slip casting conversion piece, makes the structure compacter, and the integrated level is better. The thickness of the grouting conversion block 2 is smaller than or equal to the groove depth of the conversion groove 7, namely the grouting conversion block does not extend out of the grouting block at last, so that interference is avoided, and the grouting conversion block is a protection for a grouting system.

Further, as shown in fig. 6, a grease connection joint 51 for connecting the grease pipe 5 is arranged outside the grouting conversion block 2, and an outlet end is arranged at the side end of the corresponding grouting conversion block 2 and is in sealing fit with the duct 6, so that grease leakage is prevented. The cross section of the pore passage 6 is a waist hole, and is better matched with the liquid pipe A and the liquid pipe B. Grease in the grease pipe 5 is filled into the pore passage 6 through the outlet end, namely, the rest space in the pore passage is filled, except the A, B liquid pipe, so that the A, B liquid is prevented from flowing backwards in the synchronous grouting process. Before the A, B liquid pipe is replaced, grease is injected into the grouting block hole channel and the stratum through the grease hole, so that backflow is prevented.

Example 4: a shield machine comprises a shield body, wherein the shield body is internally provided with the double-liquid grouting device for the shield in embodiment 3, and a grouting block 1 of the double-liquid grouting device for the shield is embedded on the inner wall of the shield body. The double-liquid grouting device is provided with a grouting conversion block which is connected with grouting pipes inside a duct of the shield tail grouting block and outside the grouting block. A. The liquid pipe B is plugged into the pore passage of the grouting block, so that the pore passage is prevented from being blocked by the grout caused by grouting through the pore passage. And injecting grease into the pore channels, and filling the pore channels in real time to prevent the pore channels from being blocked. Before the A, B liquid pipe is replaced, grease is injected into the grouting block hole channel and the stratum through the grease hole, so that backflow is prevented. Through the structural design, the problem that the grouting of the shield tunneling machine is easy to block can be effectively avoided, and the construction efficiency of the shield tunneling machine is further improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a shield constructs with biliquid slip casting device which characterized in that: the grouting block comprises a grouting block (1), a grouting conversion block (2) is embedded in the grouting block (1), an A liquid pipe (3), a B liquid pipe (4) and a grease pipe (5) which are arranged in a segmented mode are arranged on the grouting conversion block (2), and the outlet end of the grease pipe (5) corresponds to a hole channel (6) formed in the grouting block (1).

2. The double-fluid grouting device for the shield according to claim 1, characterized in that: a liquid pipe (3) is including preceding A liquid pipe (31) and back A liquid pipe (32), and preceding A liquid pipe (31) are connected with A liquid injection joint (33) of setting on slip casting conversion piece (2), and back A liquid pipe (32) are located pore (6) and are connected with A liquid output joint (34) of setting on slip casting conversion piece (2).

3. The double-fluid grouting device for the shield according to claim 2, characterized in that: be equipped with first fluting (35) on the outer wall of slip casting piece (1), preceding A liquid pipe (31) sets up along first fluting (35).

4. The double-fluid grouting device for the shield according to any one of claims 1 to 3, characterized in that: the B liquid pipe (4) comprises a front B liquid pipe (41) and a rear B liquid pipe (42), the front B liquid pipe (41) is connected with a B liquid injection joint (43) arranged on the grouting conversion block (2), and the rear B liquid pipe (42) is positioned in the pore channel (6) and is connected with a B liquid output joint (44) arranged on the grouting conversion block (2).

5. The double-fluid grouting device for the shield according to claim 4, characterized in that: the tail end of the rear B liquid pipe (42) is provided with a one-way valve (46); and a second slot (45) is formed in the outer wall of the grouting block (1), and the front B liquid pipe (41) is arranged along the second slot (45).

6. The double-fluid grouting device for a shield according to any one of claims 1 to 3 and 5, characterized in that: a conversion groove (7) is formed in the inner side face of the grouting block (1), the grouting conversion block (2) is fixed in the conversion groove (7), and the thickness of the grouting conversion block (2) is smaller than or equal to the groove depth of the conversion groove (7).

7. The double-fluid grouting device for the shield according to claim 6, characterized in that: and a grease connecting joint (51) for connecting a grease pipe (5) is arranged outside the grouting conversion block (2).

8. The double-fluid grouting device for the shield according to claim 7, characterized in that: the cross section of the pore channel (6) is a waist hole, and grease in the grease pipe (5) is filled into the pore channel (6) through the outlet end.

9. The double-fluid grouting device for the shield according to claim 8, characterized in that: at least one grouting conversion block (2) is arranged in the conversion groove (7).

10. The utility model provides a shield constructs machine which characterized in that: the double-liquid grouting device for the shield comprises a shield body, wherein the double-liquid grouting device for the shield as claimed in any one of claims 1-8 is arranged in the shield body, and a grouting block (1) of the double-liquid grouting device for the shield is embedded on the inner wall of the shield body.