CN102434170B - Air bag piston stretching device of pipe connecting device for slurry shield - Google Patents
Air bag piston stretching device of pipe connecting device for slurry shield Download PDFInfo
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- CN102434170B CN102434170B CN 201010297168 CN201010297168A CN102434170B CN 102434170 B CN102434170 B CN 102434170B CN 201010297168 CN201010297168 CN 201010297168 CN 201010297168 A CN201010297168 A CN 201010297168A CN 102434170 B CN102434170 B CN 102434170B
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- stretching
- air bag
- pipe
- stretching device
- piston
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Abstract
The invention relates to an air bag piston stretching device of a pipe connecting device for a slurry shield. The stretching device is arranged behind the pipe connecting device; the pipe connecting device comprises a straight pipe and a lateral pipe extending out from the lower part of the straight pipe, and the lateral pipe divides the straight pipe into a front-end pipe and a rear-end pipe; the stretching device comprises a stretching oil cylinder, a hollow piston rod penetrates through the interior of the stretching oil cylinder, a stretching rod penetrates through the interior of the hollow piston rod, and two ends of the hollow piston rod are respectively and fixedly connected with a locking mechanism; the stretching device further comprises another locking mechanism fixedly connected with the pipe connecting device; the locking mechanisms can be used for locking or releasing the stretching rod; the end part of the stretching rod is connected with an air bag piston which is arranged in a rear end pipe of the pipe connecting device; and the stretching rod can push the air bag piston to move in the straight pipe when moving. The air bag piston stretching device of the pipe connecting device for the slurry shield, disclosed by the invention, can be used for pushing the air bag piston to a position as required so as to plug slurry or water inside a steel pipe, and pulling the piston back to an original position after the steel pipe is connected well, is convenient to use and can favorably ensure that the air bag piston is sent to the position as required and pulled to the original position.
Description
Technical field
The present invention relates to a kind of air bag piston stretching device, particularly the air bag piston stretching device of energy stepping stretching in pipe connector for a kind of slurry shield.
Background technology
The major diameter slurry balance shield injects certain pressure water by ground and produces certain equilibrium pressure be unlikely to cave in to guarantee the place ahead soil layer between cutterhead and soil layer when tunnel piercing, and press water is extracted the dilution of the earth of driving to be transported to ground and to carry out mud-water separation out by slush pump simultaneously.Because the shield structure constantly advances, inject the steel pipe of the anterior press water of shield structure and discharge the steel pipe constantly access of mud to ground by shield structure head by ground, if when accessing new steel pipe, the steel pipe flange connected is separated, a large amount of muddy water in steel pipe certainly will will all flow into tunnel.At present, part unit in charge of construction adopts a kind of sponge balloon pipe connector of import, utilize press water that the sponge sacculus is advanced to the steel pipe head that front end will be taken apart, rely on the frictional force of sponge sacculus that the pipeline head is sealed, to stop the muddy water in pipeline to flow out, after new steel pipe connects, the press water of recycling bypass back into home position by the sponge sacculus.But the frictional force produced during because of the sponge inflation is limit, often pipeline can not be sealed up reliably, if the frictional force produced while expanding is too large, the sponge sacculus can not successfully advance and push back again, it can't be back into to home position again when sometimes, the sponge sacculus is advanced to the pipeline head, will produce very burden this time.Lack a kind of stretching device, by the stretching propelling piston, arrive desired location with blocking pipe.
Summary of the invention
The purpose of this invention is to provide the air bag piston stretching device of a kind of slurry shield easily with pipe connector, overcome the above-mentioned defect of prior art.
The air bag piston stretching device of pipe connector for a kind of slurry shield of the present invention, described stretching device is located at the rear of pipe connector, pipe connector comprises a straight tube and the side pipe stretched out below straight tube, side pipe is divided into front tube and rear end pipe to straight tube, described stretching device comprises the stretching oil cylinder, run through a hollow piston rod in the stretching oil cylinder, run through a stretching bar in hollow piston rod, the two ends of hollow piston rod are fixedly connected with respectively a retaining mechanism, also comprise another retaining mechanism be fixedly connected with pipe connector, the stretching bar can be locked or decontrol to all retaining mechanisms, the end of stretching bar is connected with air bag piston, air bag piston is located in the rear end pipe of described pipe connector, can promote air bag piston during the motion of stretching bar moves in described straight tube.
Retaining mechanism of the present invention is upper and lower relatively-stationary two locking cylinders.
Locking cylinder of the present invention is provided with an electromagnetic valve, and this electromagnetic valve is connected with the PLC controller.
Stretching oil cylinder of the present invention is connected with an electromagnetic valve, and this electromagnetic valve is connected with the PLC controller.
The present invention also comprises that travel switch is located at described hollow piston rod front end range and range place, rear end, and the signal that travel switch sends is transported to the PLC controller.
Be provided with a gas tube in stretching bar of the present invention, gas tube is connected with air bag.
Stretching device of the present invention and described straight tube are on same axis.
The external diameter of stretching bar of the present invention is less than described hollow piston rod internal diameter.
Stretching oil cylinder of the present invention is double acting hydraulic cylinder, and its hollow piston rod is hollow perforation, and its internal diameter is greater than the external diameter of stretching bar.
Pass through technique scheme, the air bag piston stretching device of pipe connector for slurry shield of the present invention, driving the motion of stretching bar by the stretching oil cylinder has realized piston is shifted onto to desired location, same principle is pulled out air bag piston after connecting steel pipe from desired location, guaranteed that like this air bag piston can deliver to assigned address pulling out from desired location, the convenient use easily.
The accompanying drawing explanation
The structure chart of the air bag piston stretching device of pipe connector for Fig. 1 slurry shield of the present invention
Pipe connector and air bag piston stretching device reset condition figure for Fig. 2 slurry shield of the present invention.
State diagram when Fig. 3 air bag piston stretching device of the present invention reaches desired location.
Fig. 4 the present invention connects the state diagram of new pipe after-drawing device.
The specific embodiment
As Figure 1-4, the air bag piston stretching device of pipe connector for slurry shield of the present invention, stretching device 7 is located at the rear of pipe connector, pipe connector comprises a straight tube and the side pipe stretched out below straight tube, side pipe 8 is divided into front tube 10 and rear end pipe 9 to straight tube, stretching device 7 and straight tube are on same axis, stretching device 7 comprises the stretching oil cylinder 1 with hollow piston rod 2, run through a hollow piston rod 2 in stretching oil cylinder 1, run through a stretching bar 4 in hollow piston rod 2, the external diameter of stretching bar is less than the hollow piston rod internal diameter, gapped between the two, the two ends of hollow piston rod 2 are fixedly connected with respectively a retaining mechanism 3, there is rolling bearing these retaining mechanism 3 belows, be convenient to hollow piston rod and retaining mechanism 3 moves back and forth, also comprise that another retaining mechanism 6 is fixed on the end cap of pipe connector, the stretching bar can be locked or decontrol to retaining mechanism, the end of stretching bar is connected with air bag piston 5, air bag piston 5 is located in the rear end pipe 9 of pipe connector, stretching bar 4 can promote air bag piston 5 and move in straight tube.Stretching oil cylinder 1 is double acting hydraulic cylinder, drives hollow piston rod 2 and moves back and forth.
Retaining mechanism 3,6 is upper and lower relatively-stationary two locking cylinders, up and down two relative locking cylinders can guarantee to stretch bar and the hollow piston rod axis constant.The action of locking cylinder is by solenoid control, and this electromagnetic valve is connected with the PLC controller.Front end range and range place, rear end at hollow piston rod 2 are provided with travel switch, and the signal that the trip switch sends is transported in the PLC controller, and the action of stretching oil cylinder 1 is by solenoid control, and this electromagnetic valve is connected with the PLC controller.When the retaining mechanism 3 at hollow piston rod two ends is locked the stretching bar under the PLC programme-control, meanwhile be fixed on 6 pairs of stretching bars of another retaining mechanism on end cap in relaxation state, can drive the stretching bar when now the oil cylinder hollow piston rod moves under hydraulic-driven and move back and forth; When the retaining mechanism at hollow piston rod two ends loosens the stretching bar under the PLC programme-control, meanwhile be fixed on 6 pairs of stretching bars of another retaining mechanism on end cap in locking state, the oil cylinder hollow piston rod moves back and forth under hydraulic-driven, but the stretching bar is motionless.The end of stretching bar 4 connects air bag piston 5, and stretching bar inner hollow is provided with gas tube and is connected with air bag piston, can be air bag piston 5 inflations.
In Figure 2-4, when before taking over, pipeline communicates, water flows to side pipe 8 from the front tube 10 of pipe connector straight tube and flows into other pipelines again, and the mud of another pipeline flows to front tube 10 from side pipe 8, and rear end pipe 9 is mainly to place air bag piston 5.Before taking over, first close side pipe 8, move and promote air bag piston and travel forward by stretching device, the specific works principle is: drive the stretching oil cylinder, at first by the retaining mechanism 3 at hollow piston rod 2 two ends, be relative locking cylinder action locking stretching bar 4, the hollow piston rod bar that relatively stretches is maintained static, at this moment the oil cylinder 1 that stretches drives hollow piston rod 2 and drives 4 motions of stretching bar, stretching bar 4 promotes air bag piston 5 and travels forward, when hollow piston rod 2 moves to front end range place and encounters travel switch, travel switch sends signals to the PLC controller, at this moment the PLC controller is controlled all electromagnetic valve corresponding actions that are attached thereto, make the action of electromagnetic valve on retaining mechanism 3 that locking cylinder is resetted and decontrol stretching bar 4, and on end cap, the reception of the electromagnetic valve on retaining mechanism 6 signalizing activity makes locking cylinder locking stretching bar 4 that it is maintained static, at this moment the oil cylinder 1 that stretches drives hollow piston rod 4 counter motions to encounter travel switch to range place, rear end, travel switch sends signals to the PLC controller, the PLC controller makes the electromagnetic valve action locking stretching bar 4 on retaining mechanism 3, and the reception of the electromagnetic valve on the retaining mechanism 6 on end cap signalizing activity makes locking cylinder unclamp stretching bar 4, the oil cylinder 1 that now stretches drives again hollow piston rod 2 to drive stretching bar 4 motion forward, with this action that moves in circles.
Under the control of PLC, stretching oil cylinder 1 iterative motion, drive stretching bar 4 and extend and advance forward, through after the pipe connector straight tube, extremely air bag piston 5 being shifted onto to pipeline 11 places, and is that air bag piston 5 gas-flow closures are blocked pipeline 11 by gas tube, as shown in Figure 3 like this.After shutoff, opening conduits 11 is connected with pipe connector, make the to stretch stretching bar 4 of oil cylinder and gas tube and the air bag piston 5 in the stretching bar disconnects and is retracted in pipe connector, new pipe 12 1 ends that will connect are connected with pipe connector, then drive stretching device 7 to promote stretching bar 4 and deliver to air bag piston 5 places, and make to stretch bar and gas tube be connected with air bag piston, the other end of new pipe 12 is connected with pipeline 11, as shown in Figure 4.After connecting new pipe, open valve air bag piston is leaked, after leaking, oppositely again air bag 5 is retracted to rear end pipe 9 places of pipe connector with above-mentioned motion principle, as shown in Figure 2.Like this, stretching device drives the air bag piston closed conduct and is convenient to access new pipeline, and can in pipeline, retract air bag piston and opening conduits.
Claims (8)
1. the air bag piston stretching device of pipe connector for a slurry shield, it is characterized in that, described stretching device is located at the rear of pipe connector, pipe connector comprises a straight tube and the side pipe stretched out below straight tube, side pipe is divided into front tube and rear end pipe to straight tube, described stretching device comprises the stretching oil cylinder, run through a hollow piston rod in the stretching oil cylinder, run through a stretching bar in hollow piston rod, the two ends of hollow piston rod are fixedly connected with respectively a retaining mechanism, also comprise another retaining mechanism be fixedly connected with pipe connector, the stretching bar can be locked or decontrol to all retaining mechanisms, the end of stretching bar is connected with air bag piston, air bag piston is located in the rear end pipe of described pipe connector, can promote air bag piston during the motion of stretching bar moves in described straight tube, described retaining mechanism is upper and lower relatively-stationary two locking cylinders.
2. air bag piston stretching device according to claim 1, is characterized in that, described locking cylinder is provided with an electromagnetic valve, and this electromagnetic valve is connected with the PLC controller.
3. air bag piston stretching device according to claim 1, is characterized in that, described stretching oil cylinder is connected with an electromagnetic valve, and this electromagnetic valve is connected with the PLC controller.
4. air bag piston stretching device according to claim 3, is characterized in that, also comprises that travel switch is located at described hollow piston rod front end range and range place, rear end, and the signal that travel switch sends is transported to described PLC controller.
5. air bag piston stretching device according to claim 1, is characterized in that, in described stretching bar, is provided with a gas tube, and gas tube is connected with air bag piston.
6. air bag piston stretching device according to claim 1, is characterized in that, described stretching device and described straight tube are on same axis.
7. air bag piston stretching device according to claim 1, is characterized in that, the external diameter of described stretching bar is less than described hollow piston rod internal diameter.
8. air bag piston stretching device according to claim 1, is characterized in that, described stretching oil cylinder is double acting hydraulic cylinder, and described hollow piston rod is hollow perforation, and the hollow piston rod internal diameter is greater than the external diameter of described stretching bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010297168 CN102434170B (en) | 2010-09-29 | 2010-09-29 | Air bag piston stretching device of pipe connecting device for slurry shield |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010297168 CN102434170B (en) | 2010-09-29 | 2010-09-29 | Air bag piston stretching device of pipe connecting device for slurry shield |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102434170A CN102434170A (en) | 2012-05-02 |
| CN102434170B true CN102434170B (en) | 2013-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010297168 Expired - Fee Related CN102434170B (en) | 2010-09-29 | 2010-09-29 | Air bag piston stretching device of pipe connecting device for slurry shield |
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| CN (1) | CN102434170B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148313B (en) * | 2013-04-01 | 2015-08-19 | 中国铁建重工集团有限公司 | A kind of blocking device of shield machine pipeline joint and method |
| CN107654730B (en) * | 2017-09-28 | 2023-03-24 | 中建交通建设集团有限公司 | Slurry pipe connecting auxiliary device behind slurry shield trolley and using method thereof |
| CN110905532A (en) * | 2019-11-11 | 2020-03-24 | 中交第四航务工程局有限公司 | Shield constructs screw machine with prevent gushing device |
| CN111828023B (en) * | 2020-07-14 | 2022-06-28 | 上海隧道工程有限公司 | Continuous pipe connecting system for slurry shield and construction method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3093883B2 (en) * | 1992-08-13 | 2000-10-03 | 日本鋼管株式会社 | Propulsion method |
| JP3037162B2 (en) * | 1996-10-28 | 2000-04-24 | 住友電気工業株式会社 | Pipe propulsion double propulsion unit |
| JP3572565B2 (en) * | 1997-06-24 | 2004-10-06 | 清水建設株式会社 | Face water pressure measuring device for muddy shield |
| CN2375757Y (en) * | 1998-12-22 | 2000-04-26 | 胜利石油管理局胜利采油厂 | Releasing platform |
| CN2668828Y (en) * | 2004-01-08 | 2005-01-05 | 中国海洋石油总公司 | Portal hydraulic lifter for drilling and repairing well of petroleum |
| CN201228560Y (en) * | 2008-07-10 | 2009-04-29 | 太原理工大学 | Tunnel flexible pipeline convey trailing device |
| CN101476467B (en) * | 2009-01-19 | 2011-05-04 | 上海隧道工程股份有限公司 | Pipe blocking device and pipe connection apparatus employing the same |
| CN201424940Y (en) * | 2009-06-05 | 2010-03-17 | 广东华隧建设股份有限公司 | Mud cake prevention device for slurry shield machine |
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| CN102434170A (en) | 2012-05-02 |
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