CN205895264U - Shield constructs quick -witted slip casting and prevents stifled component - Google Patents
Shield constructs quick -witted slip casting and prevents stifled component Download PDFInfo
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- CN205895264U CN205895264U CN201620827918.8U CN201620827918U CN205895264U CN 205895264 U CN205895264 U CN 205895264U CN 201620827918 U CN201620827918 U CN 201620827918U CN 205895264 U CN205895264 U CN 205895264U
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- slip casting
- piston
- shield machine
- head
- blocking component
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Abstract
The utility model relates to a shield constructs quick -witted slip casting and prevents stifled component, including slip casting head and in the slip casting head back and forth movement's slip casting piston, slip casting is overhead to be connected two liquid respectively and injects pipelines into, offers the pore in the slip casting piston, the inner wall of slip casting piston front end and slip casting head forms and mixes the cavity, should mix cavity and a liquid and inject the pipeline intercommunication into, another liquid injects into to be offered the pore in pipeline and the slip casting piston and feeds through. Compared with the prior art, the utility model discloses the simple structure, occupation space is little, and have higher economic nature and reliability, adapts to self nature of different thick liquids to can adapt to the thick liquid ratio and change, improve slip casting efficiency and slip casting effect, practice thrift and rinse water, avoid the thick liquid extravagant, solve slip casting basically and stop up the problem.
Description
Technical field
The utility model is related to shield method mortar depositing construction field, especially relates to a kind of anti-blocking component of shield machine slip casting.
Background technology
In shield tunneling process, need to be by the synchronous grouting that carry out synchronous with driving, in shield tail space (i.e. abjection shield tail
Pipe-plate lining and the soil body structure void) in extremely short time of being formed, the appropriate injecting paste material of filling be filled with closely knit,
So that surrounding Rock And Soil obtains timely supporting, effectively preventing caving in of the soil body, controlling the sedimentation of earth's surface, fixing section of jurisdiction position
Put, prevent section of jurisdiction behind ponding, ensure indeformable and not permeable leak after shield tunnel work.
Stablizing effectively of synchronous grouting system, sinks to ground in railroad crossing, city existing building and airfield runway etc.
When fall requires very harsh operating mode, often it is to ensure that one of key factor of engineering safety and quality.
In current Suporting structure, synchronous grouting system mainly adopts two fluid grouting and two kinds of equipment of single fluid grouting.Two
Under kind system synchronous grouting compares, the grout cures speed of single slurry slip casting construction method is slow, and cement slurry sets speeds control is stranded
Difficulty, it is wayward that it is filled with range of scatter, the easily unordered diffusion of pressure slurries, not only wastes slurries, and has a strong impact on it and fills out
Fill consolidation effect；Two-shot grouting method can adjust the setting time of slurries, but because dual slurry is usually in Grouting Pipe hybrid chamber
Injection stratum after interior mixing, the therefore property noted of slurries, setting time adjustability poor, plugging phenomenon easily occurs it is impossible to
Slip casting, affects mortar depositing construction efficiency, processes not in time and more can affect grouting quality, and then affects safety and the progress of engineering.
Therefore, although two fluid grouting grouting quality is easy to control, slip casting effect is good, and slip casting hybrid chamber position is easily blocked up
Plug, even if being often carried out, the part grains of sand in slurry are deposited in slurry pipe, so that slurry pipe latus rectum is gradually reduced, also can cause
Blocking, and clean and once will expend substantial amounts of clear water or bentonite, also bring the problem of sewage discharge in tunnel.Apply actual
During work, operating personnel often do not note cleaning and the cleaning of pipeline, once stopping for a long time to push away, are negligent of clearing up, then slip casting again
System necessarily blocks, and is that shield subsequently advances the quality of work to bring hidden danger.
The double-liquid grouting system filling mixed method that the outer shield manufacturer of Current Domestic adopts mainly has two kinds: a kind of a, b
Liquid respectively sets the pipeline independently leading to the soil body, freely mixes after being filled into the soil body respectively in the soil body；Another is in shield shell
In internal pipeline, (one section of hybrid chamber) mixes injection shield tail space.
Slurries mixed effect using first kind of way is poor, and there are larger fluctuation scope, therefore slip casting the grout cures time
Quality is unstable；Second way slurries good mixing effect, the grout cures time stablizes controlled, and grouting quality is stable, but due to
In shield shell, b liquid pipe end adopts unidirectional rubber case to hybrid chamber, but because the outlet of b liquid pipe is enclosed in a liquid pipeline substantially, b liquid
Flow to unstable, and space is narrow, once slip casting suspends or discontinuous, be negligent of cleaning or clean insufficient, pipeline easily produces
Raw blocking.Once blocking produces, need to take considerable time and carry out pipeline dismounting dredging, and have in the case that external pressure is higher
Necessarily gush risk.
Each manufacturer solution imperfect to grouting pipeline blocking and pass blocking problem at this stage, some producers are to slip casting
The cross sectional shape of pipeline is optimized, some producers using the grouting gun with scavenger circuit, but in actual use, grouting pipeline
Blocking and pass blocking situation are still a big persistent ailment in work progress.
Chinese patent cn 103982198a discloses a kind of shield dual slurry filling adaptor, and its internal thread three-way pipe passes through outer
Joint connects hollow three-way pipe, is connected with section of jurisdiction connector, is provided with coupling above hollow three-way pipe on the right side of hollow three-way pipe
, coupling be provided with for control injection waterglass interface check valve, waterglass pipe is connected with check valve, by hollow
Three-way pipe injects waterglass into the connector of section of jurisdiction.But this patent application is when stopping slip casting, outside slurries and debris are permissible
Invade section of jurisdiction connector and hollow three-way pipe, if ball valve is opening, outside slurries and debris can also invade whole
Individual cement mortar pipeline, this is also the current problem through being commonly encountered.And wherein waterglass pipeline is in fact in water in non-slip casting
In the range of mud/mixed zone pipeline, such as there are remnants then also can produce blocking in mixed zone by the waterglass of check valve.
Utility model content
The purpose of this utility model is exactly to overcome the defect of above-mentioned prior art presence to provide a kind of solution biliquid
Easy plugging in filling system, and slurries mixing quality difference and affect the situation of grouting quality, reduce slurries loss, strengthen shield
The anti-blocking component of shield machine slip casting of the adaptability to various bad grounds for the structure equipment.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of anti-blocking component of shield machine slip casting, the slip casting piston moving back and forth including casting head and in casting head,
Two liquid injection line are connected respectively on described casting head,
Duct is opened up, slip casting piston nose is formed with the inwall of casting head and mixes cavity in described slip casting piston, with
Piston movement, hybrid chamber volume can change therewith, and mixing cavity is connected with a liquid injection line, another liquid note
Enter in pipeline and slip casting piston and open up hole link.Stop from slip casting to slip casting, the process of stretching out of piston has preferable unimpeded
Function.This is the effect not available for conventional utility model.Piston is connected with the piston rod of an oil cylinder, has larger pushing away
Solidification or half coagulum can be released casting head pipeline by power completely.
Set location guide in described casting head, have and prevent bulk debris from invading, block the function of casting head, slip casting is lived
Plug center is provided with the perforate matching with this guide rod, stretching out with piston head, and a small amount of in the hole in piston head remaining slurry is squeezed
Go out, do not reserve the space of mixed serum.
Described location guide is affixed with casting head inwall using cross form, and the cross strut in casting head exit can
To block bulk debris, also reduce the possibility of blocking.
The end of described slip casting piston is pintongs inverted cone surface form, overlaps with the cross bar of the cross of location guide, makes
Obtain in piston head mixed zone and substantially do not stay gap, and remaining slurry in casting head or half, full coagulum can be shoveled out piston head
Endoporus, because mixed zone is shorter, cylinder thrust crushes to grout cures thing enough.
The duct opening up in described slip casting piston is the axial hole axially opening up along slip casting piston and is connected with axis hole
Several radial holes.
The perforate connection that described axial hole is matched with guide rod with slip casting piston centre.
The front end of described slip casting piston is provided with prevents slurries from flowing back to the one-way sealing in slip casting piston from mixing cavity
Assembly.
The strong rear in the rear end cylinder piston rod of described slip casting piston connects.
Compared with prior art, the utility model simple structure, takes up room little, and has higher economy and reliability
Property, adapt to the self property of different slurries, and adapt to grout coordinate ratio change, improve slip casting efficiency and slip casting effect, save clear
Wash water, it is to avoid slurries waste, the basic downtime solving slip casting blockage problem, reducing shield machine, thus effectively lower shield
Machine tunneling construction cost and maintenance cost.
Brief description
Fig. 1 carries out two fluid grouting operating diagram for the utility model；
Fig. 2 carries out single fluid grouting operating diagram for the utility model；
Fig. 3 stops structural representation during slip casting for the utility model；
Fig. 4 is the part-structure schematic diagram of casting head；
Fig. 5 is the part-structure schematic diagram of slip casting piston.
In figure, 1 is casting head, and 2 is slip casting piston, and 3 is casting head guide rod, and 4 is a liquid pipeline, and 5 is b liquid pipeline, and 6 is to live
Plug radial hole, 7 mixed zones, 8 is piston axial hole.
Specific embodiment
With specific embodiment, the utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment
A kind of anti-blocking component of shield machine slip casting, its structure as Figure 1-3, main includes casting head 1, slip casting piston 2 and a
Liquid pipeline 4, b liquid pipeline 5.Wherein casting head guide rod 3 pass through cross strut affixed with casting head 1 inwall, as shown in figure 4, and with
Piston axial hole 8 matches；Slip casting piston 2 is arranged on inside casting head 1, and slip casting piston 2 rear end is connected with cylinder piston rod, can
Do piston movement inside casting head 1, so that the volume of mixed zone 7 changes；The internal close port of export conduct of casting head 1
Mixed zone 7, mixed zone 7 is communicated with a liquid pipeline 4 in side, and rear end is communicated with the piston axial hole 8 of slip casting piston 2, in biliquid note
During slurry a liquid pipeline 4 injection a liquid and piston axial hole 8 injection b liquid mixed zone 7 mixing after to the outer injection soil body.Stopping
During slip casting operation, slip casting piston 2 stretches out, and until mixed zone 7, volume is changed into 0.
The structure of slip casting piston 2 is as shown in figure 5, have several piston radial holes 6, in slip casting operation on slip casting piston 2
When, slip casting piston 2 is retracted, and piston radial hole 6 is communicated with b liquid pipeline 5, and meanwhile, piston radial hole 6 is communicated with piston axial hole 8.
When stopping slip casting operation, slip casting piston 2 stretches out, and piston radial hole 6 is completely cut off with b liquid pipeline 5.Slip casting piston 2 periphery and piston
Axial hole inwall is provided with sealing, can prevent slurries from invading rear mechanism, invading b liquid pipeline 5 respectively.
Match between 4 lobe inverted cone surface bodies of slip casting piston 2 front end and the cross strut of the casting head port of export, can be to mixing
The half of area, full coagulum carries out attrition crushing, can all extrude residue in the range of mixed zone.
The course of work of anti-blocking grouting device comprises the following steps:
Normal two fluid grouting operating diagram is as shown in figure 1, slip casting piston 2 is reduced to inside casting head, and stroke is on earth, this
When a liquid pipeline 4 connect with mixed zone 7, b liquid pipeline 5 is connected with the piston radial hole 6 on piston 2, piston radial hole 6 itself with
Piston axial hole 8 is connection, therefore b liquid pipeline 5 is connected with mixed zone 7, and the proportioning mixing that therefore can simultaneously carry out a, b liquid adds
Note, a, b liquid exports the injection soil body from casting head 1 after mixing in mixed zone 7.
Normal single fluid grouting operating diagram as shown in Fig. 2 slip casting piston 2 is reduced to inside casting head, to after specific stroke,
Now a liquid pipeline 4 is connected with mixed zone 7, and b liquid pipeline 5 is completely cut off with the piston radial hole 6 on piston 2, thus b liquid pipeline 5 with mix
Area 7 completely cuts off, and when therefore carrying out the filling of a liquid, b liquid is non-interference with a liquid pipeline, and a liquid is gone out from casting head 1 after by mixed zone 7
The mouth injection soil body.
Stop slip casting operating diagram as shown in figure 3, slip casting piston 2 extends slip casting end surface, and stroke is maximum, now mixes
Closing area 7 volume is 0, and a, b liquid pipeline is hedged off from the outer world in sealing range, and a, b liquid pipeline mutually completely cuts off, thus without generation
Situation about mutually invading.Simultaneously during piston 2 stretches out, the former slurries remaining in mixed zone 7, half, full coagulum is by piston 2
Extrusion casting head 1, prevents from blocking mixed zone and a, b liquid pipeline.
Action is extended and retracted by piston, you can meet above 3 kinds of operating modes, and there is the function of preventing blocking.
Two fluid grouting, can only be using narrow and small sky in shield afterbody housing by the restriction mixing pattern and the device space at present
Between, have that mixed effect is bad or pipeline blockage problem, these slip casting problems easily cause that grouting layer easily liquefies, bleeding is big,
Engineering defect and the disaster such as antidetonation, bearing capacity be not low and later stage ground settlement is big.
This project solves easy plugging in double-liquid grouting system substantially, and slurries mixing quality difference and affect grouting quality
Situation, reduce slurries loss, strengthen the adaptability to various bad grounds for the Suporting structure, simplify filling system operation and tie up
Nurse makees, and saves engineering time and relevant cost.
Claims (8)
1. a kind of anti-blocking component of shield machine slip casting is it is characterised in that this component includes casting head and moves back and forth in casting head
Slip casting piston,
Two liquid injection line are connected respectively on described casting head,
Duct is opened up, slip casting piston nose is formed with the inwall of casting head and mixes cavity, and this mixing is empty in described slip casting piston
Chamber is connected with a liquid injection line, opens up hole link in another liquid injection line and slip casting piston.
2. a kind of anti-blocking component of shield machine slip casting according to claim 1 is it is characterised in that set solid in described casting head
Determine guide rod, slip casting piston centre is provided with the perforate matching with this guide rod.
3. a kind of anti-blocking component of shield machine slip casting according to claim 2 is it is characterised in that described location guide adopts
Cross form is affixed with casting head inwall.
4. a kind of anti-blocking component of shield machine slip casting according to claim 3 is it is characterised in that the end of described slip casting piston
Portion is pintongs inverted cone surface form, overlaps with the cross bar of the cross of location guide.
5. a kind of anti-blocking component of shield machine slip casting according to claim 2 is it is characterised in that open in described slip casting piston
If duct be the axial hole axially opening up along slip casting piston and the several radial holes connecting with axis hole.
6. a kind of anti-blocking component of shield machine slip casting according to claim 5 is it is characterised in that described axial hole and slip casting
The perforate connection that piston centre is matched with guide rod.
7. a kind of anti-blocking component of shield machine slip casting according to claim 5 is it is characterised in that before described slip casting piston
End is provided with prevents slurries from flowing back to the one-way sealing assembly in slip casting piston from mixing cavity.
8. a kind of anti-blocking component of shield machine slip casting according to claim 1 is it is characterised in that after described slip casting piston
Strong rear cylinder piston rod is held to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620827918.8U CN205895264U (en) | 2016-08-02 | 2016-08-02 | Shield constructs quick -witted slip casting and prevents stifled component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620827918.8U CN205895264U (en) | 2016-08-02 | 2016-08-02 | Shield constructs quick -witted slip casting and prevents stifled component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205895264U true CN205895264U (en) | 2017-01-18 |
Family
ID=57782469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620827918.8U Withdrawn - After Issue CN205895264U (en) | 2016-08-02 | 2016-08-02 | Shield constructs quick -witted slip casting and prevents stifled component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205895264U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676105A (en) * | 2016-08-02 | 2018-02-09 | 上海力行工程技术发展有限公司 | A kind of anti-blocking component of shield machine slip casting |
| CN109668873A (en) * | 2018-12-05 | 2019-04-23 | 邢凤江 | A kind of live vector vaccine device for detecting activity and its application method |
| CN113202513A (en) * | 2021-06-09 | 2021-08-03 | 中铁三局集团有限公司 | Novel double-liquid grouting mixer for shield |
-
2016
- 2016-08-02 CN CN201620827918.8U patent/CN205895264U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107676105A (en) * | 2016-08-02 | 2018-02-09 | 上海力行工程技术发展有限公司 | A kind of anti-blocking component of shield machine slip casting |
| CN107676105B (en) * | 2016-08-02 | 2020-01-14 | 上海力行工程技术发展有限公司 | Grouting anti-blocking component of shield tunneling machine |
| CN109668873A (en) * | 2018-12-05 | 2019-04-23 | 邢凤江 | A kind of live vector vaccine device for detecting activity and its application method |
| CN113202513A (en) * | 2021-06-09 | 2021-08-03 | 中铁三局集团有限公司 | Novel double-liquid grouting mixer for shield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170118 Effective date of abandoning: 20200114 |