CN102721446B - Shield construction grouting amount measurement method and device based on grouting pump stroke measurement - Google Patents
Shield construction grouting amount measurement method and device based on grouting pump stroke measurement Download PDFInfo
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- CN102721446B CN102721446B CN 201210200866 CN201210200866A CN102721446B CN 102721446 B CN102721446 B CN 102721446B CN 201210200866 CN201210200866 CN 201210200866 CN 201210200866 A CN201210200866 A CN 201210200866A CN 102721446 B CN102721446 B CN 102721446B
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- grouting
- grouting pump
- grouting amount
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- measurement
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of engineering mechanical equipment, and relates to a shield construction grouting amount measurement method and device based on grouting pump stroke measurement. The set of the shield construction grouting amount measurement device provided by the invention is additionally arranged on a shield machine, so that a grouting amount can be accurately measured in real time in a construction process; the precision and the instantaneity of the traditional measurement method can be improved; and the requirements on high precision and high reliability of grouting amount measurement in a shield construction environment can be met. A stroke of a piston rod is used as an effective stroke when a measurement pressure is more than or equal to normal grouting pressure, so that an actual grouting amount is calculated according to the effective stroke. A slurry pressure transmitter is used for measuring variation of slurry pressure at an outlet of a groutingpump, and movement of the piston rod is measured by a stay cord type displacement sensor.
Description
Technical field
Engineering machinery equipment technology field under the present invention specifically is based on shield-tunneling construction grouting amount measuring method and device that the grouting pump effective travel is measured.
Background technology
In the existing shield-tunneling construction, grouting amount is measured the main method that relies on the grouting pump metering.Multiply by the quantity that the slip casting pump capacity obtains injecting slurries by record grouting pump number of strokes.Because grouting pressure height and the structural reason of grouting pump own cause grouting pump to have bigger leakage situation, make that measurement result and the actual deviation of grouting pump metering method are excessive, are unfavorable for the accurate control of shield-tunneling construction quality.In the existing shield-tunneling construction, the main source that grouting pump leaks has two, and one is to reflux, and one is to inhale sky.
Summary of the invention
The objective of the invention is to overcome the prior art deficiency, a kind of shield-tunneling construction grouting amount measuring method and device of measuring based on the grouting pump effective travel proposed, when shield machine increases cover apparatus of the present invention and realizes construction to accurate, the real-time measurement of grouting amount, improve precision, the real-time of traditional original measuring method, satisfy high precision and the high reliability request under the shield-tunneling construction environment grouting amount measured.
The inventive method technical scheme is: a kind of shield-tunneling construction grouting amount measuring method of measuring based on the grouting pump effective travel, be that the piston rod stroke during more than or equal to normal grouting pressure calculates actual grouting amount as effective travel according to effective travel by gaging pressure.
Realize said method, the measure of taking: use the mud pressure transmitter to measure the variation of grouting pump outlet slurries pressure, use draw-wire displacement sensor to measure the motion of piston rod.
Further disclose said method, use the mud pressure transmitter to be installed in the grouting pump exit, the start-stop of accurate recording grouting pump slip casting when each stroke constantly; Use the motion conditions of draw-wire displacement sensor record grouting pump piston; In conjunction with the normal slip casting moment, the motion conditions of pump piston and the actual displacement of grouting pump, just can obtain grouting amount actual in the stroke through integrating, also just can obtain the grouting amount of a period of time accordingly.
Apparatus of the present invention are achieved through the following technical solutions, a kind of shield-tunneling construction grouting amount measurement mechanism of measuring based on the grouting pump effective travel, and this device:
It comprises the mud pressure transmitter, and it is fixed on position, grouting pump exit;
It also comprises and installs the self-control pipeline additional, and this self-control pipeline is located between slip casting delivery side of pump and the original shield machine feed pipe for mortar, and described mud pressure transmitter is communicated with this self-control pipe side wall;
It also comprises draw-wire displacement sensor, and this draw-wire displacement sensor matrix and shield machine vehicle frame are fixed, and the free end of displacement transducer stay cord links to each other with the grouting pump piston rod;
It also comprises a fixed pulley, and described stay cord is walked around this fixed pulley, and the definite plane in this plane, fixed pulley place and stay cord two ends is in the same plane;
It comprises the control section that is made of upper industrial computer and special-purpose data collecting card, upper industrial computer is connected to mud pressure transmitter and draw-wire displacement sensor by the data collecting card of special use, high speed acquisition pressure, displacement transducer data are given upper industrial computer, thereby realize collection, the storage of raw data, pre-service, integrating and Presentation Function.
Cause in the prior art grouting pump metering method to measure inaccurate grouting pump and leak the source and mainly contain two, one is to reflux, and one is to inhale emptyly, and wherein inhaling sky is main cause.Pressure when the grouting pump top hole pressure injects much larger than no slurries under normal slip casting working condition.The present invention uses the mud pressure transmitter to be installed in the grouting pump exit, and the start-stop of accurate recording grouting pump slip casting when each stroke is used the motion conditions of draw-wire displacement sensor record grouting pump piston constantly.Motion conditions and slip casting pump capacity in conjunction with the normal slip casting moment, pump piston just can obtain grouting amount actual in the stroke through integrating, also can obtain the grouting amount of a period of time accordingly.Its computing formula is:
Q=(l
t1-l
t0)·S
Wherein Q is the grouting amount of a period of time, l
T1Be t1 piston rod displacement constantly, l
T0Be t0 piston rod displacement constantly, S is sectional area, the force value when requiring all force value between t0, the t1 all more than or equal to normal slip casting.
Upper industrial computer is connected to mud pressure transmitter and draw-wire displacement sensor by the capture card of special use, realizes collection, storage, pre-service, integrating and the Presentation Function of raw data.
Beneficial effect: the present invention can under few condition of changing that original measuring system is tried one's best, reach higher measuring accuracy with lower cost, satisfies precision and the reliability requirement under the shield-tunneling construction environment grouting amount measured.
Description of drawings
Fig. 1 measurement mechanism scantling plan.
Description of symbols: feed pipe for mortar 1, mud pressure transmitter 2, steel pipe 3, self-control pipeline 4, pipe adapter 5, pump for mortar transmission outlet 6, grouting pump 7, piston rod draw ring 8, shield machine vehicle frame 9, draw-wire displacement sensor 10, fixed pulley 11, piston rod 12, pump support 13, pedestal 14.
Embodiment
Below in conjunction with accompanying drawing technical solution of the present invention is described further.
As shown in Figure 1, between the outlet of grouting pump 6 and original shield machine feed pipe for mortar 1, install one section homemade pipeline 3 additional, one section steel pipe 3 that diameter is slightly thin is got through, welded to outer wall at this self-control pipeline 3, flange that matches with mud pressure transmitter 2 flanges of steel pipe 3 free ends welding.The mud pressure transmitter good high pressure resistant with bolt, that wearing quality is good is used for measuring grouting pump 6 outlet pressure.The benefit of this kind method is, reduced the retrofit work amount to pump, to the replacing of self-control pipeline 3 and pressure unit 2, measures accurately in maintaining easily.
Aspect the measurement of grouting pump throw of poston, use draw-wire displacement sensor to measure.Draw-wire displacement sensor 9 matrixes and shield machine vehicle frame 8 is fixing, and the draw ring 7 of welding links to each other on the free end of displacement transducer 9 stay cords and the grouting pump piston rod 12.The stay cord that stretches out is walked around a fixed pulley 10, and this definite plane in fixed pulley plane, 10 place and stay cord two ends is in the same plane.It is to change stay cord straight line moving direction that fixed pulley 10 is set, and can avoid the interference with miscellaneous part, improves life-span and the measuring accuracy of draw-wire displacement sensor.
Claims (1)
1. a shield-tunneling construction grouting amount measurement mechanism of measuring based on the grouting pump effective travel is characterized in that it comprises the mud pressure transmitter, and it is fixed on position, grouting pump exit;
It also comprises and installs the self-control pipeline additional, and this self-control pipeline is located between slip casting delivery side of pump and the original shield machine feed pipe for mortar, and described mud pressure transmitter is communicated with this self-control pipe side wall;
It also comprises draw-wire displacement sensor, and this draw-wire displacement sensor matrix and shield machine vehicle frame are fixed, and the free end of displacement transducer stay cord links to each other with the grouting pump piston rod;
It also comprises a fixed pulley, and described stay cord is walked around this fixed pulley, and the definite plane in this plane, fixed pulley place and stay cord two ends is in the same plane;
It comprises the control section that is made of upper industrial computer and special-purpose data collecting card, and upper industrial computer is connected to mud pressure transmitter and draw-wire displacement sensor by the data collecting card of special use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210200866 CN102721446B (en) | 2012-06-19 | 2012-06-19 | Shield construction grouting amount measurement method and device based on grouting pump stroke measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210200866 CN102721446B (en) | 2012-06-19 | 2012-06-19 | Shield construction grouting amount measurement method and device based on grouting pump stroke measurement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102721446A CN102721446A (en) | 2012-10-10 |
| CN102721446B true CN102721446B (en) | 2013-09-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210200866 Active CN102721446B (en) | 2012-06-19 | 2012-06-19 | Shield construction grouting amount measurement method and device based on grouting pump stroke measurement |
Country Status (1)
| Country | Link |
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| CN (1) | CN102721446B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3546189A1 (en) * | 1985-12-27 | 1987-07-02 | Ott Kg Lewa | METHOD AND DEVICE FOR MEASURING FLOW IN OSCILLATING DISPLACEMENT PUMPS |
| DE3932395A1 (en) * | 1989-09-28 | 1991-04-11 | Ganshorn Med Electronic Gmbh | Calibrating flowmeter for varying air flows, esp. breathing - using piston pump flow generator with mechanical markings for light barrier measurement of time intervals |
| DE4206576B4 (en) * | 1992-03-02 | 2005-08-04 | Putzmeister Ag | Method and arrangement for determining the delivery rate or the delivery rate of conveyed material transported by means of a piston-type fuel pump |
| CN1260000C (en) * | 2003-06-28 | 2006-06-21 | 朱玉祥 | Automatic liquid blending method and automatic liquid blending device |
| CN201413168Y (en) * | 2008-12-31 | 2010-02-24 | 三一重工股份有限公司 | Delivery measurement system of concrete pump and concrete pump having the same |
| CN101846604B (en) * | 2010-04-23 | 2013-07-03 | 北京交通大学 | Detection method of grouting reinforcement effect in tunnel |
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2012
- 2012-06-19 CN CN 201210200866 patent/CN102721446B/en active Active
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| CN102721446A (en) | 2012-10-10 |
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