CN209780898U - Shield tail grease sealing system - Google Patents
Shield tail grease sealing system Download PDFInfo
- Publication number
- CN209780898U CN209780898U CN201920558976.9U CN201920558976U CN209780898U CN 209780898 U CN209780898 U CN 209780898U CN 201920558976 U CN201920558976 U CN 201920558976U CN 209780898 U CN209780898 U CN 209780898U
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- grease
- shield
- annular
- shield shell
- shield tail
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- Lining And Supports For Tunnels (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
the utility model discloses a shield tail grease sealing system, it includes: the shield shell, outer covering type grouting system, multiunit shield tail brush and pressure sensor. The shield shell is provided with a grease injection hole, the outer wrapping type grouting system is fixed on the peripheral surface of the shield shell and comprises a grease injection pipe. One end of the grease injection pipe is communicated with the grease injection hole. The multiple sets of shield tail brushes are axially arranged along the shield shell and fixed on the inner wall of the shield shell, an annular grease bin is formed between every two adjacent sets of shield tail brushes, and the annular grease bin is communicated with the grease injection pipe through a grease injection hole. The pressure sensor is positioned in the annular grease bin and fixed on the inner wall of the shield shell. Utilize pressure sensor can real-time supervision annular grease storehouse in the grease pressure value to the grease pressure that can accurate control annular grease storehouse remains throughout at certain reasonable within range, guarantees that grease pressure satisfies the designing requirement, guarantees shield tail sealing waterproof effect.
Description
Technical Field
The utility model relates to a shield tail grease sealing system.
Background
The sealing and water-proofing of the shield tail are key links for ensuring the smooth implementation of the tunnel engineering in the shield interval. Similar accidents at home and abroad have shown that the waterproof failure of the shield tail seal generally brings irreparable catastrophic results, endangers the safety of lives and properties of people and seriously affects the engineering progress. The shield tail grease sealing system mainly comprises a shield tail brush and shield tail sealing grease, and a fortification pressure is provided by the shield tail sealing grease, and the shield tail brush and the shield tail sealing grease form a fortification system together to prevent external water and soil from entering the shield shell. The existing shield tail grease sealing system has the following problems: (1) although the fortifying pressure of the shield tail sealing grease has a design value, no method for accurately measuring the grease pressure in the grease bin exists in the actual construction process, the actual grease pressure can not be ensured to meet the design requirement, and the potential safety hazard of shield tail waterproof failure exists; (2) the sealing grease in the grease bin is gradually lost along with the advancing of the shield tunneling machine, the loss amount cannot be calculated at present, so that the corresponding grease supplement injection amount can only be determined according to experience, the injection amount of the grease directly influences the fortification pressure, and the construction safety and reliability cannot be effectively ensured by the method.
In conclusion, the detection and guarantee of the sealing performance of the shield tail grease sealing system lack a corresponding quantification method, so that potential safety hazards such as shield tail water leakage and mud leakage exist in shield construction, and the safety of an engineering body and the surrounding environment is endangered.
SUMMERY OF THE UTILITY MODEL
the to-be-solved technical problem of the utility model is to provide a shield tail grease sealing system that can quantitative detection sealing performance for the defect that the detection and the guarantee of overcoming shield tail grease sealing system sealing performance among the prior art lack corresponding quantification method.
The utility model discloses an above-mentioned technical problem is solved through following technical scheme:
A shield tail grease sealing system, its characterized in that, it includes:
The shield shell is provided with a grease injection hole;
The outer wrapping type grouting system is fixed on the peripheral surface of the shield shell and comprises a grease injection pipe, and one end of the grease injection pipe is communicated with the grease injection hole;
The plurality of sets of shield tail brushes are arranged along the axial direction of the shield shell and are fixed on the inner wall of the shield shell, an annular grease bin is formed between every two adjacent sets of shield tail brushes, and the annular grease bin is communicated with the grease injection pipe through the grease injection hole;
And the pressure sensor is positioned in the annular grease bin and fixed on the inner wall of the shield shell.
Preferably, a groove is formed in the inner wall of the shield shell, and the pressure sensor is fixed in the groove.
Preferably, an annular grease groove is formed in the inner wall of the shield shell, the annular grease groove is located in the annular grease bin, and the grease injection hole is located at the bottom of the annular grease groove.
Preferably, the shield tail grease sealing system further comprises a grease pump and a controller, the grease pump is connected to one end, far away from the grease injection hole, of the grease injection pipe, the controller is in communication connection with the pressure sensor, and the controller is used for controlling the grease pump to be turned on or turned off.
Preferably, the number of the externally-wrapped grouting systems is multiple, and the multiple externally-wrapped grouting systems are uniformly distributed around the outer peripheral surface of the shield shell.
Preferably, the outer wrapping type grouting system further comprises a protective cover, the protective cover is fixed on the outer peripheral surface of the shield shell, a containing cavity is formed between the protective cover and the shield shell, and the grease injection pipe is located in the containing cavity.
Preferably, the external cladding type grouting system further comprises a grouting pipe, and the grouting pipe is located in the accommodating cavity.
Preferably, the pressure sensor is a wired sensor, and a wiring on the sensor is arranged in the grease injection pipe.
On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.
The utility model discloses an actively advance the effect and lie in: utilize pressure sensor can real-time supervision annular grease storehouse in the grease pressure value to the grease pressure that can accurate control annular grease storehouse remains throughout at certain reasonable within range, guarantees that grease pressure satisfies the designing requirement, guarantees shield tail sealing waterproof effect.
Drawings
Fig. 1 is a schematic cross-sectional structure diagram of a shield tail grease sealing system in a preferred embodiment of the present invention.
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1, with the grout tube removed.
Fig. 3 is a schematic view of section B-B of fig. 1 with the grout tube removed and the annular grease groove shown.
Fig. 4 is a schematic cross-sectional view taken along line C-C in fig. 2.
Description of reference numerals:
Shield shell 100
Grease injection hole 110
Groove 120
Annular grease groove 130
Overwrap grouting system 200
Grease injection pipe 210
Protective cover 220
The receiving cavity 230
Slip casting pipe 240
Shield tail brush 300
Annular grease bin 310
Pressure sensor 400
Detailed Description
The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Fig. 1 and 2 show a shield tail grease sealing system comprising: the shield shell 100, the overwrap grouting system 200, a plurality of sets of tail brushes 300 and a pressure sensor 400. The shield shell 100 is provided with a grease injection hole 110, and the outer wrapping type grouting system 200 is fixed on the outer circumferential surface of the shield shell 100. The overwrap grouting system 200 includes a grease injection tube 210, a grease pump (not shown), and a controller (not shown). One end of the grease injecting pipe 210 communicates with the grease injecting hole 110. The plurality of sets of shield tail brushes 300 are arranged along the axial direction of the shield shell 100 and fixed on the inner wall of the shield shell 100, an annular grease bin 310 is formed between two adjacent sets of shield tail brushes 300, and the annular grease bin 310 is communicated with the grease injection pipe 210 through the grease injection hole 110. The pressure sensor 400 is positioned in the annular grease bin 310 and fixed to the inner wall of the shield shell 100. The grease pump is connected to one end of the grease inlet pipe 210 far away from the grease inlet hole 110, and the controller is in communication connection with the pressure sensor 400 and is used for controlling the grease pump to be turned on or turned off.
utilize pressure sensor 400 can real-time supervision annular grease storehouse 310 in the grease pressure value to the grease pressure that can accurate control annular grease storehouse 310 remains throughout at certain reasonable within range, guarantees that grease pressure satisfies the designing requirement, guarantees shield tail sealing waterproof effect. When the pressure sensor 400 detects that the pressure of the grease in the annular grease bin 310 is insufficient, the pressure sensor 400 transmits a data signal to the controller, and the controller controls the grease pump to be started to inject the grease into the annular grease bin 310; when the pressure sensor 400 detects that the pressure of the grease in the annular grease bin 310 meets the design requirements, the pressure sensor 400 again transmits the data signal to the controller, and the controller controls the grease pump to be turned off.
In this scheme, in order to fix pressure sensor 400 conveniently, guarantee simultaneously that the pressure that pressure sensor 400 surveyed is the pressure value when the grease storehouse is filled with the grease, it has a slot 120 to open on the inner wall of shield shell 100, and pressure sensor 400 is fixed in slot 120.
in order to facilitate the grease in the grease injecting pipe 210 to uniformly fill the entire annular grease chamber 310 through the grease injecting hole 110, as shown in fig. 3, an annular grease groove 130 is formed on the inner wall of the shield shell 100, the annular grease groove 130 is located in the annular grease chamber 310, and the grease injecting hole 110 is located at the bottom of the annular grease groove 130. Grease can flow around the annular grease groove 130, thereby ensuring that the entire annular grease bin 310 is filled evenly.
the number of the outer sheath type grouting systems 200 is plural, and the plural outer sheath type grouting systems 200 are uniformly distributed around the outer circumferential surface of the shield shell 100. In this embodiment, the number of the outer wrapping type grouting systems 200 is four. The four externally wrapped type grouting systems 200 can improve the efficiency of grease injection and can also improve the uniformity of the annular grease bin in the filling process.
As shown in fig. 4, the external cladding grouting system 200 further includes a protective cover 220, the protective cover 220 is fixed on the outer peripheral surface of the shield shell 100, a receiving cavity 230 is formed between the protective cover 220 and the shield shell 100, and the grease injecting pipe 210 is located in the receiving cavity 230. The protective cover 220 is used for protecting the grease injection pipe 210, and the grease injection pipe 210 is prevented from touching other objects to cause damage in the movement process of the shield tunneling machine.
the overwrap grouting system 200 further includes a grouting pipe 240, the grouting pipe 240 being located within the receiving cavity 230. The grouting pipe 240 is mainly used for filling slurry between the inner wall of the tunnel and the annular duct piece completing grease sealing, so that the inner wall and the annular duct piece are fixedly connected.
in order to improve the sealing effect of the shield tail grease sealing system, three groups of shield tail brushes 300 form two annular grease bins 310 in the scheme. Two grease injection pipes 210 are contained in each of the overwrap-type grouting systems 200, and each grease injection pipe 210 is communicated with an annular grease bin 310 through a grease injection hole 110.
In this embodiment, the pressure sensor 400 is a wired sensor, and the wiring on the sensor is arranged in the grease inlet pipe 210. In other embodiments, pressure sensor 400 may also be a wireless sensor, with a wireless connection between pressure sensor 400 and the controller.
Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.
Claims (8)
1. The utility model provides a shield tail grease seal system which characterized in that, it includes:
the shield shell is provided with a grease injection hole;
The outer wrapping type grouting system is fixed on the peripheral surface of the shield shell and comprises a grease injection pipe, and one end of the grease injection pipe is communicated with the grease injection hole;
The plurality of sets of shield tail brushes are arranged along the axial direction of the shield shell and are fixed on the inner wall of the shield shell, an annular grease bin is formed between every two adjacent sets of shield tail brushes, and the annular grease bin is communicated with the grease injection pipe through the grease injection hole;
And the pressure sensor is positioned in the annular grease bin and fixed on the inner wall of the shield shell.
2. the shield tail grease sealing system of claim 1 wherein the shield shell has a groove formed in an inner wall thereof, the pressure sensor being secured in the groove.
3. The shield tail grease sealing system of claim 2, wherein the inner wall of the shield shell is provided with an annular grease groove, the annular grease groove is positioned in the annular grease bin, and the grease injection hole is positioned at the bottom of the annular grease groove.
4. The shield tail grease sealing system of claim 1, further comprising a grease pump and a controller, wherein the grease pump is connected to one end of the grease injection pipe far away from the grease injection hole, the controller is in communication connection with the pressure sensor, and the controller is used for controlling the grease pump to be turned on or turned off.
5. The shield tail grease sealing system of claim 1, wherein the number of the overwrap grouting systems is plural, and the plural overwrap grouting systems are evenly distributed around the outer circumferential surface of the shield shell.
6. The shield tail grease sealing system of claim 1, wherein the overwrap grouting system further comprises a protective cover fixed to the outer peripheral surface of the shield shell, a receiving cavity is formed between the protective cover and the shield shell, and the grease injection pipe is located in the receiving cavity.
7. The shield tail grease sealing system of claim 6 wherein the over-wrap grouting system further comprises a grouting tube located within the receiving cavity.
8. The tail grease sealing system of claim 1 wherein the pressure sensor is a wired sensor, and wiring on the sensor is routed within the grease inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558976.9U CN209780898U (en) | 2019-04-23 | 2019-04-23 | Shield tail grease sealing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558976.9U CN209780898U (en) | 2019-04-23 | 2019-04-23 | Shield tail grease sealing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780898U true CN209780898U (en) | 2019-12-13 |
Family
ID=68803720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920558976.9U Active CN209780898U (en) | 2019-04-23 | 2019-04-23 | Shield tail grease sealing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209780898U (en) |
-
2019
- 2019-04-23 CN CN201920558976.9U patent/CN209780898U/en active Active
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