CN219840656U - Supporting equipment for blocking shield tunnel portal gap - Google Patents
Supporting equipment for blocking shield tunnel portal gap Download PDFInfo
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- CN219840656U CN219840656U CN202320268605.3U CN202320268605U CN219840656U CN 219840656 U CN219840656 U CN 219840656U CN 202320268605 U CN202320268605 U CN 202320268605U CN 219840656 U CN219840656 U CN 219840656U
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- grouting
- main pipe
- gap
- shield tunnel
- tunnel portal
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- 230000000903 blocking effect Effects 0.000 title claims abstract description 14
- 238000012856 packing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a supporting device for blocking a shield tunnel portal gap, which belongs to the field of shield construction equipment and comprises: the grouting device is pre-buried in the concrete of shield tunnel portal, the grouting device includes: the grouting device comprises a grouting main pipe, wherein a one-way valve is arranged at the front end of the grouting main pipe in a penetrating mode, a servo motor is arranged at the tail end of the grouting main pipe in a penetrating mode, an auger is arranged in the grouting main pipe in a rotating mode, the auger is connected with the servo motor in a driving mode, and grouting branch pipes are further arranged at the tail end of the grouting main pipe in a communicating mode. According to the utility model, the grouting device is pre-buried in the concrete of the shield tunnel portal, so that the gap between the duct piece and the tunnel portal can be filled at any time, the problem that the gap is generated again due to shrinkage of the concrete in the solidification process is solved, meanwhile, the screw conveyer, the one-way valve and other structures arranged in the grouting device can play a good conveying role, prevent the grouting main pipe from being blocked, prevent the injected concrete from flowing back, and have high practicability.
Description
Technical Field
The utility model belongs to the field of shield construction equipment, and particularly relates to matched equipment for blocking a shield tunnel portal gap.
Background
In the construction of a subway shield section, when a shield machine enters and exits a tunnel, the blocking of the tunnel portal is often a key part for quality control, after the shield machine starts or receives, a large amount of building gaps are formed when the tunnel portal is broken, and gaps between the segments and the tunnel portal need to be filled in a short time so as to avoid water and mud gushing and collapse.
In order to reduce shield tunneling risk, the prior Chinese patent: CN111779496B discloses a novel gap blocking method for a tunnel portal in a subway shield tunneling, which improves the safety and reliability of construction by installing a pouring pump pipe and pouring concrete between a duct piece and the tunnel portal, and the pouring pump pipe is immediately removed after pouring is finished, however, the concrete can generate a certain shrinkage in the solidification process to cause the gap to be regenerated again, and seriously threatens the safety and stability of the tunnel portal, so that a matched device for blocking the gap of the tunnel portal in the shield tunneling is needed to solve the hidden trouble.
Disclosure of Invention
The utility model aims to provide matched equipment for blocking a shield tunnel portal gap, which solves the problems in the background technology.
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:
a kit for plugging a shield tunnel portal gap, comprising: the grouting device is pre-buried in the concrete of shield tunnel portal, the grouting device includes: the grouting device comprises a grouting main pipe, wherein a one-way valve is arranged at the front end of the grouting main pipe in a penetrating mode, a servo motor is arranged at the tail end of the grouting main pipe in a penetrating mode, an auger is arranged in the grouting main pipe in a rotating mode, the auger is connected with the servo motor in a driving mode, and grouting branch pipes are further arranged at the tail end of the grouting main pipe in a communicating mode.
Preferably, the check valve includes: the grouting device comprises a shoe, wherein a sleeve is communicated with the shoe, a through hole is formed in the front end wall of a grouting main pipe, the sleeve is arranged in the through hole in a sliding mode, a supporting plate is arranged at the position, close to the shoe, of the sleeve, a spring is arranged between the supporting plate and the inner wall of the front end of the grouting main pipe, an umbrella-shaped cap is fixed at one end, extending out of the grouting main pipe, of the sleeve, and a plurality of grouting holes are formed in the position, located at the through hole, of the sleeve.
Preferably, the shoe is funnel-shaped, and the outlet of the shoe is communicated with the inlet of the sleeve.
Preferably, four limit rods are arranged at one side, close to the one-way valve, of the inner part of the grouting main pipe, a bearing is fixed at the center of each limit rod, and the packing auger is fixed with the inner ring of the bearing.
Preferably, the auger is connected with the output shaft of the servo motor through a coupler.
Preferably, the grouting branch pipes are obliquely arranged, and the inclination angle is 10-20 degrees.
Compared with the prior art, the supporting equipment for blocking the gap of the shield tunnel portal has the following advantages:
according to the utility model, the grouting device is pre-buried in the concrete of the shield tunnel portal, so that the gap between the duct piece and the tunnel portal can be filled at any time, the problem that the gap is generated again due to shrinkage of the concrete in the solidification process is solved, meanwhile, the screw conveyer, the one-way valve and other structures arranged in the grouting device can play a good conveying role, prevent the grouting main pipe from being blocked, prevent the injected concrete from flowing back, and have high practicability.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front view of a portal structure of the present utility model;
FIG. 2 is a longitudinal cross-sectional view at A-A of FIG. 1;
FIG. 3 is a front cross-sectional view of the grouting apparatus of the present utility model;
FIG. 4 is a schematic view of the structure of the check valve of the present utility model;
fig. 5 is a diagram showing the distribution of the stop lever of the present utility model.
In the figure: the grouting device comprises a 1-grouting main pipe, a 2-one-way valve, a 21-bottom bracket, a 22-sleeve, a 23-supporting plate, a 24-spring, a 25-umbrella-shaped cap, a 26-grouting hole, a 3-servo motor, a 4-auger, a 5-grouting branch pipe, a 6-through hole, a 7-limiting rod, an 8-bearing and a 9-coupling.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings and examples:
1-5, the present utility model provides a mating apparatus for plugging a shield tunnel portal gap, comprising: the grouting device is pre-buried in the concrete of shield tunnel portal, the grouting device includes: the grouting main pipe 1, the front end that the grouting main pipe 1 runs through and is provided with check valve 2, and the tail end runs through and is provided with servo motor 3, the inside that the grouting main pipe 1 rotates and is provided with auger 4, auger 4 with servo motor 3 drive connection, the tail end that the grouting main pipe 1 still communicates and is provided with grouting branch pipe 5.
As a preferred embodiment, the one-way valve 2 comprises: the grouting device comprises a bottom support 21, wherein a sleeve 22 is communicated with the bottom support 21, a through hole 6 is formed in the front end wall of the grouting main pipe 1, the sleeve 22 is slidably arranged in the through hole 6, a supporting plate 23 is arranged at the position, close to the bottom support 21, of the sleeve 22, a spring 24 is arranged between the supporting plate 23 and the inner wall of the front end of the grouting main pipe 1, an umbrella-shaped cap 25 is fixed at one end, extending out of the grouting main pipe 1, of the sleeve 22, and a plurality of grouting holes 26 are formed in the position, located at the through hole 6, of the sleeve 22. The bottom support 21 is funnel-shaped, and the outlet of the bottom support is communicated with the inlet of the sleeve 22. When the grouting device works, concrete is shone to the collet 21 under the conveying action of the auger 4, the collet 21 is pushed to move towards the front end of the grouting main pipe 1, meanwhile, the sleeve 22 is driven to move forwards, the umbrella-shaped cap 25 is opened, the grouting holes 26 are leaked out, meanwhile, part of concrete enters the sleeve 22 from the inlets of the collet 21, and then flows into the gap between the pipe piece and the tunnel gate from the grouting holes 26.
As a preferred embodiment, four limit rods 7 are arranged at one side of the grouting main pipe 1, which is close to the one-way valve 2, a bearing 8 is fixed at the center of the four limit rods 7, and the auger 4 is fixed with the inner ring of the bearing 8. In operation, concrete may flow from the gap between the stop bars 7 to the shoe 21.
As a preferred embodiment, the auger 4 is connected with the output shaft of the servo motor 3 through a coupling 9.
As a preferred embodiment, the grouting branch pipes 5 are arranged obliquely, and the inclination angle is 10-20 degrees. When the grouting main pipe is in operation, the pouring pump pipe is connected with the grouting branch pipe 5, and the purpose of the inclined arrangement is to facilitate concrete to flow into the grouting main pipe 1.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A kit for plugging a shield tunnel portal gap, comprising: grouting device, grouting device pre-buried in the concrete of shield tunnel portal, its characterized in that, grouting device includes: the grouting main pipe (1), the front end that grouting main pipe (1) runs through and is provided with check valve (2), and the tail end runs through and is provided with servo motor (3), the inside rotation that grouting main pipe (1) is provided with auger (4), auger (4) with servo motor (3) drive connection, the tail end that grouting main pipe (1) still communicates and is provided with grouting branch pipe (5).
2. A kit for blocking a shield tunnel portal gap according to claim 1, characterized in that the one-way valve (2) comprises: the grouting device comprises a bottom support (21), a sleeve (22) is communicated with the bottom support (21), a through hole (6) is formed in the front end wall of a grouting main pipe (1), the sleeve (22) is arranged in the through hole (6) in a sliding mode, a supporting plate (23) is arranged at the position, close to the bottom support (21), of the sleeve (22), a spring (24) is arranged between the supporting plate (23) and the inner wall of the front end of the grouting main pipe (1), the sleeve (22) stretches out of one end of the grouting main pipe (1) to be fixed with an umbrella-shaped cap (25), and a plurality of grouting holes (26) are formed in the position, located in the through hole (6), of the sleeve (22).
3. A kit for blocking a gap in a shield tunnel according to claim 2, characterized in that the shoe (21) is funnel-shaped, the outlet of which communicates with the inlet of the sleeve (22).
4. The corollary equipment for blocking the gap of the shield tunnel portal according to claim 1, wherein four limit rods (7) are arranged on one side, close to the one-way valve (2), of the grouting main pipe (1), a bearing (8) is fixed at the center of each limit rod (7), and the packing auger (4) is fixed with the inner ring of the bearing (8).
5. The corollary equipment for blocking the gap of the shield tunnel portal according to claim 1, wherein the auger (4) is connected with an output shaft of the servo motor (3) through a coupler (9).
6. A supporting device for blocking a gap in a shield tunnel according to claim 1, characterized in that the grouting branch pipes (5) are arranged obliquely, with an angle of inclination of 10-20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320268605.3U CN219840656U (en) | 2023-02-21 | 2023-02-21 | Supporting equipment for blocking shield tunnel portal gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320268605.3U CN219840656U (en) | 2023-02-21 | 2023-02-21 | Supporting equipment for blocking shield tunnel portal gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219840656U true CN219840656U (en) | 2023-10-17 |
Family
ID=88304811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320268605.3U Active CN219840656U (en) | 2023-02-21 | 2023-02-21 | Supporting equipment for blocking shield tunnel portal gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219840656U (en) |
-
2023
- 2023-02-21 CN CN202320268605.3U patent/CN219840656U/en active Active
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