CN204002831U - A kind of screw machine blowout prevention structure - Google Patents
A kind of screw machine blowout prevention structure Download PDFInfo
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- CN204002831U CN204002831U CN201420441398.8U CN201420441398U CN204002831U CN 204002831 U CN204002831 U CN 204002831U CN 201420441398 U CN201420441398 U CN 201420441398U CN 204002831 U CN204002831 U CN 204002831U
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Abstract
The utility model relates to a kind of screw machine, be specifically related to a kind of screw machine blowout prevention structure, its soil outlet place is provided with two muck removal gates, and have additional pressurize pump quarrel device, described pressurize pump quarrel device comprises a circuits and a slush pump, described soil outlet place reserves flange-interface, and during use, screw machine is connected by described flange-interface and slush pump; Described screw machine is also provided with a set of early gate open-close system, is arranged at shield machine pressure Cang Chu.The utility model can prevent because pressure reduction produces a large amount of muddy water, drift sand pours in shield excavation machine inside through conveying worm and causes disaster, play the function that safe construction prevents that major accident from occurring, guarantee can be unearthed safely when the high compound stratum of water content tunnels, further guarantee operating personnel's physical and mental health.
Description
Technical field
The utility model relates to a kind of screw machine, is specifically related to a kind of screw machine blowout prevention structure.
Background technology
Shield machine is to integrate mechanical, electrical, liquid, sensing, information technology, has the excavation cutting soil body, carries dregs, the subterranean tunnel excavation equipment of the functions such as assembled tunnel lining, guiding correction.Shield machine has been widely used in the construction of tunnel such as subway, highway, railway, municipal administration, water power.
Screw machine is Suporting structure chief component, by cylindrical shell, drive unit, helical axis, muck removal gate etc., formed, and be the soil-discharging device of earth pressure balanced shield, EPBS.Its Main Function is that the earth that cutterhead is scaled off is discharged from shield structure soil storehouse, forms sealing soil plug in the process that quarrel soil discharges in screw machine, can keep close soil sealing bin internal pressure stable within the specific limits.In shield construction, screw machine is not only being undertaken the native eliminating of quarrel in shield machine excavation storehouse, and can play control and excavate soil pressure in storehouse, guarantee excavation face earth pressure balance, prevent that ground from caving in or encircleing role.
When shield machine mainly tunnels in boulder bed and weathered rock formation; because of boulder bed water content and permeability all higher; often can run into because pressure reduction causes the problem of the muddy water of gushing and cause adverse consequences; a large amount of silt with water flow jet on conveyor and splash in shield machine, in the construction environment in rear body and tunnel; even a small amount of water spray also can cause silt to slide from conveyor; cause the difficulty of being unearthed, in construction, have to shut down and carry out silt cleaning work, delay construction speed.Meanwhile, long shutdown makes native storehouse mesohigh water quick collecting, once open screw machine again by the generation again that causes gushing, vicious circle so repeatedly, cannot normally carry out shield-tunneling construction, and driving speed is very slow.Repeatedly gush and will cause support pressure transition pressure release, make ground cause serious sedimentation and then cause engineering accident to occur.Secondly, spray that a large amount of mud is owing to being mixed with the foaming agent of sediment improvement in tunnel, the operator's health loss to prune job under the condition of high temperature is quite large, and operating personnel's physical and mental health has been formed to very large threat.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect of the prior art, a kind of screw machine blowout prevention structure is provided, prevent from causing disaster because pressure reduction produces a large amount of muddy water, drift sand and pours in shield machine inside through screw machine, and then play the function that safe construction prevents that major accident from occurring.
The technical solution of the utility model is: a kind of screw machine blowout prevention structure, described screw machine comprises housing, drive unit, helical axis, helical blade, muck removal gate, soil outlet, helical axis and helical blade are arranged in housing, helical blade is separated by a distance to be set on helical axis, drive unit drives helical axis running, soil outlet is arranged on described screw machine rear end lower, and muck removal gate is for the unearthed amount of adjustable screw machine.Wherein, described soil outlet place is provided with two muck removal gates, and has additional pressurize pump quarrel device, and described pressurize pump quarrel device comprises a circuits and a slush pump, described soil outlet place reserves flange-interface, and during use, screw machine is connected by described flange-interface and slush pump; Described screw machine is also provided with a set of early gate open-close system, is arranged at shield machine pressure Cang Chu.
Alternatively, the drive unit of described screw machine adopts single fluid motor-driven, and proportion of utilization valve carries out stepless speed regulation.
Alternatively, the reserved flange-interface in described screw machine discharging opening place is DN200 flange-interface.
Alternatively, described pressurize pump quarrel device pipeline outlet below is placed with native boxcar.
Alternatively, described early gate open-close system adopts quadric chain.
Alternatively, the increase of described screw rod afterbody has a joint backpitch blade.
Alternatively, on the housing of described screw machine, being provided with 8 adds mud, adds foam mouth.
Alternatively, described screw machine has additional nitrogen cylinder, as the power source of emergency cut-off muck removal gate.
The beneficial effects of the utility model are: the utility model adopts pressurize pump quarrel device pumping soil quarrel, if run into the situation that a large amount of underground water enters, this device can be transported to native boxcar soil quarrel at an easy rate, can prevent that pressure reduction from producing a large amount of muddy water, drift sand pours in shield excavation machine inside through conveying worm and causes disaster, play the function that safe construction prevents that major accident from occurring.The utility model adopts two muck removal gate screw machine form of structure can alternately be opened and be reduced water and soil and gush by two muck removal gates when the high soil layer of water content is unearthed.The utility model adopts front end gate open-close system, when screw machine is keeped in repair, closes, and makes the earth pressure storehouse of screw machine and shield machine complete isolation.Generally speaking, the utility model can prevent because pressure reduction produces a large amount of muddy water, drift sand pours in shield excavation machine inside through conveying worm and causes disaster, play the function that safe construction prevents that major accident from occurring, guarantee can be unearthed safely when the high compound stratum of water content tunnels, further guarantee operating personnel's physical and mental health.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and instantiation, the utility model is described in detail, but the utility model is not limited to following instance.
Fig. 1 shows the structural representation of screw machine blowout prevention structure of the present utility model.
Mark shown in figure: 1, the soil body outside storehouse; 2, shield cutter; 3, pressure storehouse; 4, feed well; 5, the housing of screw machine; 6, the soil outlet of screw machine; 7, the pipeline of pressurize pump quarrel device; 8, the helical blade of screw machine; 9, the pipeline outlet of pressurize pump quarrel device; 10, native boxcar; 11, slush pump; 12, muck removal gate.
The specific embodiment
As shown in Figure 1, shield structure screw machine comprises housing 5, drive unit, helical axis, helical blade 8, muck removal gate 12, soil outlet 6, helical axis and helical blade 8 are arranged in housing 5, helical blade 8 is separated by a distance to be set on helical axis, drive unit drives helical axis running, soil outlet 6 is arranged on described screw machine rear end lower, and muck removal gate 12 is for the unearthed amount of adjustable screw machine.
The engineering geological condition of mainly tunneling in boulder bed and weathered rock formation according to shield machine, because of boulder bed water content and permeability all higher, in shield driving process, may there is the danger that underground water is gushed in screw machine soil outlet 6, so consider to adopt following four kinds of measures comprehensively to solve:
1) screw machine is set up two muck removal gates:
The rational position outside the original muck removal gate 12 of screw machine adds a muck removal gate, once there is underground water, gushs, and closes immediately this gate, and then improves construction safety.
2) add super absorbent resin solution:
By adding mud system to pressure storehouse 3 or adding super absorbent resin solution through adding foam mouth in screw machine, can make mobile water and mud be mixed into gel, prevent that screw machine water and soil from gushing, receive aqua simultaneously and also have lubrication, can reduce cutterhead moment of torsion, reduce the wearing and tearing of shield cutter 2 and cutter.
3) increase pressurize pump quarrel device
Shield machine, when adopting the construction of earth pressure balance pattern, adds at single-unit screw machine under the unearthed pattern of conveyor, and when through high-moisture, high permeability formation, shield machine is installed pressurize pump quarrel device.This pressurize pump quarrel device comprises a circuits 7 and a slush pump 11.When normal construction need not, be not arranged on vehicle frame yet, when shield machine is transported to vehicle frame front portion by flat car during through the abundant stratum of water amount, install and use.Reserved corresponding DN200 flange-interface on screw machine, during use, screw machine and slush pump 11 are connected.This pressurize pump quarrel device can be cut by pumping soil, if run into the situation that a large amount of underground water enters, this pressurize pump quarrel device can be transported to native boxcar 10 soil quarrel at an easy rate.
4) at shield machine pressure Cang Chu, a set of early gate open-close system is set
According to high water content, high permeability formation condition, conventional screw machine is improved, at shield machine pressure Cang3Chu, be feed well 4 places, set up a set of screw machine early gate open-close system, advance and often open, during the maintenance of shield structure screw machine, close, make screw machine and pressure storehouse 3 complete isolation.
In sum, the utlity model has higher practical value, can be applied in the tunnelling of railway, city rail construction.
Claims (8)
1. a screw machine blowout prevention structure, described screw machine comprises housing, drive unit, helical axis, helical blade, muck removal gate, soil outlet, helical axis and helical blade are arranged in housing, helical blade is separated by a distance to be set on helical axis, drive unit drives helical axis running, soil outlet is arranged on described screw machine rear end lower, muck removal gate is for the unearthed amount of adjustable screw machine, it is characterized in that: described soil outlet place is provided with two muck removal gates, and have additional pressurize pump quarrel device, described pressurize pump quarrel device comprises a circuits and a slush pump, described soil outlet place reserves flange-interface, during use, screw machine is connected by described flange-interface and slush pump, described screw machine is also provided with a set of early gate open-close system, is arranged at shield machine pressure Cang Chu.
2. screw machine blowout prevention structure according to claim 1, it is characterized in that: the drive unit of described screw machine adopts single fluid motor-driven, and proportion of utilization valve carries out stepless speed regulation.
3. screw machine blowout prevention structure according to claim 1, is characterized in that: the reserved flange-interface in described screw machine discharging opening place is DN200 flange-interface.
4. screw machine blowout prevention structure according to claim 1, is characterized in that: described pressurize pump quarrel device pipeline outlet below is placed with native boxcar.
5. screw machine blowout prevention structure according to claim 4, is characterized in that: described early gate open-close system adopts quadric chain.
6. screw machine blowout prevention structure according to claim 1, is characterized in that: the increase of described screw rod afterbody has a joint backpitch blade.
7. screw machine blowout prevention structure according to claim 1, is characterized in that: on the housing of described screw machine, be provided with 8 and add foam mouth.
8. screw machine blowout prevention structure according to claim 1, is characterized in that: described screw machine has additional nitrogen cylinder, as the power source of emergency cut-off muck removal gate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441398.8U CN204002831U (en) | 2014-08-06 | 2014-08-06 | A kind of screw machine blowout prevention structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420441398.8U CN204002831U (en) | 2014-08-06 | 2014-08-06 | A kind of screw machine blowout prevention structure |
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| CN204002831U true CN204002831U (en) | 2014-12-10 |
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| CN201420441398.8U Active CN204002831U (en) | 2014-08-06 | 2014-08-06 | A kind of screw machine blowout prevention structure |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612703A (en) * | 2014-12-29 | 2015-05-13 | 上海市基础工程集团有限公司 | Anti-gushing device for sludge discharge of screw conveyor during earth pressure balancing type shield excavation |
| CN105083931A (en) * | 2015-09-09 | 2015-11-25 | 中铁六局集团有限公司 | Waste soil improving device |
| CN105257305A (en) * | 2015-09-25 | 2016-01-20 | 铁建重工新疆有限公司 | Slag discharging mechanism of shield tunneling machine and muddy water balance shield tunneling machine |
| CN105275475A (en) * | 2015-11-03 | 2016-01-27 | 上海市基础工程集团有限公司 | Screw machine with telescopic screw rod and maintenance window |
| CN105350977A (en) * | 2015-09-25 | 2016-02-24 | 铁建重工新疆有限公司 | Shield machine slag discharging method |
| CN108820728A (en) * | 2018-09-06 | 2018-11-16 | 中国铁建重工集团有限公司 | A kind of screw-rod structure, screw conveyor and development machine |
| CN109488324A (en) * | 2018-09-19 | 2019-03-19 | 中交第二航务工程局有限公司 | The anti-mud of intelligence is gushed system in earth pressure shield tunneling machine mining process |
| CN110005424A (en) * | 2019-04-22 | 2019-07-12 | 中建三局基础设施建设投资有限公司 | It is a kind of for weakening the device and its application method that shield screw machine is gushed |
| CN111594192A (en) * | 2020-05-27 | 2020-08-28 | 重庆交通建设(集团)有限责任公司 | Double-mode switching shield tunneling machine system |
-
2014
- 2014-08-06 CN CN201420441398.8U patent/CN204002831U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612703A (en) * | 2014-12-29 | 2015-05-13 | 上海市基础工程集团有限公司 | Anti-gushing device for sludge discharge of screw conveyor during earth pressure balancing type shield excavation |
| CN105083931A (en) * | 2015-09-09 | 2015-11-25 | 中铁六局集团有限公司 | Waste soil improving device |
| CN105257305A (en) * | 2015-09-25 | 2016-01-20 | 铁建重工新疆有限公司 | Slag discharging mechanism of shield tunneling machine and muddy water balance shield tunneling machine |
| CN105350977A (en) * | 2015-09-25 | 2016-02-24 | 铁建重工新疆有限公司 | Shield machine slag discharging method |
| CN105350977B (en) * | 2015-09-25 | 2019-01-01 | 铁建重工新疆有限公司 | A kind of Slagoff method of shield machine |
| CN105275475A (en) * | 2015-11-03 | 2016-01-27 | 上海市基础工程集团有限公司 | Screw machine with telescopic screw rod and maintenance window |
| CN108820728A (en) * | 2018-09-06 | 2018-11-16 | 中国铁建重工集团有限公司 | A kind of screw-rod structure, screw conveyor and development machine |
| CN109488324A (en) * | 2018-09-19 | 2019-03-19 | 中交第二航务工程局有限公司 | The anti-mud of intelligence is gushed system in earth pressure shield tunneling machine mining process |
| CN110005424A (en) * | 2019-04-22 | 2019-07-12 | 中建三局基础设施建设投资有限公司 | It is a kind of for weakening the device and its application method that shield screw machine is gushed |
| CN111594192A (en) * | 2020-05-27 | 2020-08-28 | 重庆交通建设(集团)有限责任公司 | Double-mode switching shield tunneling machine system |
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