CN102853812B - Angular-displacement underwater settlement gauge - Google Patents
Angular-displacement underwater settlement gauge Download PDFInfo
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- CN102853812B CN102853812B CN201210239932.2A CN201210239932A CN102853812B CN 102853812 B CN102853812 B CN 102853812B CN 201210239932 A CN201210239932 A CN 201210239932A CN 102853812 B CN102853812 B CN 102853812B
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- sedimentometer
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Abstract
An angular-displacement underwater settlement gauge comprises a piston-type displacement transmission device; a lower casing pipe and an upper casing pipe are disposed on the piston-type displacement transmission device; an extension rod is connected with the lower part of the piston-type displacement transmission device; the lower end of the extension rod is an anchoring point; a measuring box is connected with above the piston-type displacement transmission device; a settlement amount electric measurement device and an A/D switch device are disposed in the measuring box; a steel pipe is connected with the upper end of the measuring box; a settlement broad is connected with the top end of the steel pipe; a transmission belt is disposed in the piston-type displacement transmission device; the settlement amount electric measurement device is connected with the upper end of the transmission belt; the settlement amount electric measurement device is connected with the A/D switch device; the A/D switch device is connected with a monitoring instrument through cables, wherein the monitoring instrument is disposed above far away from the settlement gauge. The settlement gauge has a simple structure, and can convert linear displacement into angular displacement to improve measurement precision and accuracy. The angular-displacement underwater settlement gauge has wide application scope, high monitoring precision and sensitivity, strong interference immunity for transmission signals, and high stability, can realize real-time visual display of the settlement values, and is simple in installation, and low in cost.
Description
Technical field
The invention belongs to civil engineering work quality monitoring instrument, particularly for the sedimentometer of soft foundation settling volume prediction long term monitoring under water.
Background technology
In port construction, conventionally use the settling amount of vibrating wire settlement sensor monitoring soft soil base.The utilization of vibrating wire settlement sensor is still rested at present the vibration frequency of manual record string wire and calculates surveyed solum settlement amount through the artificial later stage.When vibrating wire settlement sensor is used for monitoring settling amount, have that failure rate is high, signal is subject to electromagnetic interference (EMI) in the time of cable transmission and affect the problems such as measurement result, monitoring accuracy are low, poor stability, cost is high, data acquisition is not directly perceived.
Summary of the invention
The object of the present invention is to provide a kind of angular displacement type sedimentometer under water, both can be used for measuring for a long time the settling amount of soft soil foundation under water, also can measure the settling amount of land soft soil foundation.Angular displacement type sedimentometer application under water face width, monitoring accuracy and highly sensitive, signal transmission strong interference immunity, stability are high, settling amount numerical value can be shown in real time intuitively, and simple installation, use cost are cheap.
Technical scheme of the present invention is:
A kind of angular displacement type sedimentometer under water, it is characterized in that: have a piston type shift gear, piston type shift gear has lower parts casing pipe and upper sleeve, piston type shift gear below connects extension rod, extension rod lower end is anchor point, and piston type shift gear top is connected with measuring box, has settling amount electric probe device and A/D conversion equipment in measuring box, measuring box upper end joint steel pipe, steel pipe top connects settlement plate; In piston type shift gear, have transmission belt, transmission belt upper end connects settling amount electric probe device, and settling amount electric probe device connects A/D conversion equipment, and A/D conversion equipment connects top monitoring instrument at a distance by cable.
The lower end of transmission belt is fixed on the bottom of lower parts casing pipe.
Lower port in upper sleeve has deflection sheave, and deflection sheave is walked around and be fixed on the top of lower parts casing pipe in the lower end of transmission belt.
Settling amount electric probe device has angular displacement sensor, angular displacement sensor is connected on cylindrical winding wheel shaft by coupling shaft, transmission belt upper end is fixed on cylindrical reel, and, on cylindrical reel, there is vortex ring spring on transmission belt top in cylindrical reel inside.
Characteristic advantage of the present invention:
This angular displacement type under water sedimentometer is simple in structure, converts displacement of the lines to angular displacement and improves measuring accuracy and accuracy.Angular displacement type sedimentometer application under water face width, both can be used for measuring for a long time the settling amount of soft soil foundation under water, also can measure the settling amount of land soft soil foundation.Monitoring accuracy and highly sensitive, signal transmission strong interference immunity, stability are high, settling amount numerical value can be shown in real time intuitively, and simple installation, use cost are cheap.
Brief description of the drawings
Fig. 1 is angular displacement type sedimentometer structure one under water
Fig. 2 is angular displacement type sedimentometer structure two under water
Fig. 3 is settling amount electric probe device front view
Fig. 4 is settling amount electric probe device left view
In figure: 1 monitoring instrument, 2 signal cables, 3 sea level, 4 settlement plates, 5 steel pipes, 6A/D conversion, 7 settling amount electric probe devices, 8 transmission belts, the upper sleeve of 9 piston type shift gears, the lower parts casing pipe of 10 piston type shift gears, 11 extension rods, 12 anchor points, 13 do not occur that sedimentation rock stratum is underground, 14 deflection sheavies, 15 angular displacement sensors, 16 cylindrical reels, 17 vortex ring springs, 18 coupling shafts, 19 measuring boxes.
Embodiment
A kind of angular displacement type sedimentometer under water as shown in Figure 1, 2, there is a piston type shift gear, piston type shift gear has lower parts casing pipe and upper sleeve, piston type shift gear below connects extension rod, extension rod lower end is anchor point, and piston type shift gear top is connected with measuring box, has settling amount electric probe device and A/D conversion equipment in measuring box, measuring box upper end joint steel pipe, steel pipe top connects settlement plate; In piston type shift gear, have transmission belt, transmission belt upper end connects settling amount electric probe device, and settling amount electric probe device connects A/D conversion equipment, and A/D conversion equipment connects top monitoring instrument at a distance by cable.
Have deflection sheave in the lower port of upper sleeve as shown in Figure 1, deflection sheave is walked around and is fixed on the top of lower parts casing pipe in the lower end of transmission belt.
The lower end of transmission belt is fixed on the bottom of lower parts casing pipe as shown in Figure 2.
Settling amount electric probe device has angular displacement sensor as shown in Figure 3,4, angular displacement sensor is connected on cylindrical winding wheel shaft by coupling shaft, transmission belt upper end is fixed on cylindrical reel,, on cylindrical reel, there is vortex ring spring on transmission belt top in cylindrical reel inside.
This angular displacement type is sedimentometer under water, and its structure further illustrates:
" sedimentometer bottom extension rod " is fixed on the underground anchor point that sedimentation rock stratum does not occur, its upper end connects sedimentometer " piston type shift gear ", " settling amount electric probe device ", " settlement plate " successively, and be connected to " monitoring instrument " by the signal cable of drawing in " settling amount electric probe device ", bury thereby can be intuitively read accurately in real time current settlement plate place soil layer the settling amount occurring in during this period of time up to this moment underground from sedimentometer.Each device characteristic is as follows:
One, " sedimentometer bottom extension rod "
The underground anchor point that sedimentation rock stratum does not occur is fixed in " sedimentometer bottom extension rod " lower end.The lower parts casing pipe of extension rod upper end and " piston type shift gear " lower end is fixed.Extension rod material is that the firm deformable material that is difficult for is as metal etc.To make bottom sleeve pipe that sedimentation not occur, thus the reference point of measuring as settling amount.
Two, " piston type shift gear " comprises following Liang Ge mechanism:
1, piston mechanism
As Fig. 1 and Fig. 2, piston is made up of upper sleeve and lower parts casing pipe, and two sleeve pipe joining places have anti-piston to deviate from mechanism and cross spacing mechanism.Upper sleeve and " settling amount electric probe device " place can and " settlement plate " are connected to one, thereby ensure that the stroke that longitudinally relatively moves in section between piston two sleeve pipes at a time equals the settling amount of the soil layer of surveying in this time period.Thickness and flowable waterproof packing material are filled up in internal piston space, and the water resistance of sedimentometer is reliable when ensureing piston movement.Upper and lower sleeve pipe is the firm deformable material that is difficult for as metal etc.
2, the displacement transmission mechanism in piston
As shown in Fig. 1, Fig. 3, Fig. 4, in piston sleeve, there is the transmission " belt " of transmitting displacement.The upper end of " belt " is that b end is fixed on the side of " cylindrical reel " in " settling amount electric probe device "." belt " effect is that piston two sleeve pipes are longitudinally relatively moved in section between the at a time b that the real-time equivalent of stroke is converted into " belt " in this time period hold the displacement of the lines amount that rotate in the axle center of " cylindrical reel " in " settling amount electric probe device ", equals the settling amount of the interior soil layer of surveying of this time period.That transmission " belt " characteristic is is flexible, it is flexible to be difficult for, easy fracture not, as the materials such as wire rope, elongated tagger, chain, cortex travelling belt all can.Two kinds of mounting structures of transmission in piston " belt " and the principle of work of transmission " belt " are as follows:
Structure (1): piston inner structure is as shown in Fig. 1, Fig. 3, Fig. 4, and a deflection sheave is equipped with on top below upper sleeve.Deflection sheave rotation axis is fixed on upper sleeve bottom, and pulley is used for making transmission " belt " to turn to." belt " upper end b is connected with " cylindrical reel " side in " settling amount electric probe device ", and " belt " is wound around side by side multi-turn on " cylindrical reel " side, and being wound around the number of turns can need amendment according to range." belt " other end a fixes with bottom cannula tip after " deflection sheave ".
When settlement plate at a time between in section with the sinking of surveyed soil layer, piston compression." belt " winding number of turns on " cylindrical reel " reduces, the b of " belt " holds the displacement of the lines amount of rotating around the axle center of " cylindrical reel " to equal the decrement of this time period inner carrier, also equal the settling amount of settlement plate in this time period, realized displacement transmitted function.
Otherwise when settlement plate at a time between in section with the rising of surveyed soil layer, piston extends, " belt " winding number of turns on " cylindrical reel " increases, the b end of " belt " equals the elongation of this time period inner carrier around the counter-rotational displacement of the lines amount of axle center institute of " cylindrical reel ", also equal the ascending amount of interior settlement plate of this time period.
Structure (2): piston inner structure as shown in Figure 2, Figure 3, Figure 4, " belt " upper end b is connected with " cylindrical reel " side in " settling amount electric probe device ", " belt " is wound around side by side multi-turn on " cylindrical reel " side, and being wound around the number of turns can need amendment according to range." belt " other end a directly and bottom casing shoe fix.
When settlement plate at a time between in section with the sinking of surveyed soil layer, piston compression." belt " winding number of turns on " cylindrical reel " increases, and the b of " belt " holds the displacement of the lines amount of rotating around the axle center of " cylindrical reel " to equal the decrement of this time period inner carrier, also equals the settling amount of settlement plate in this time period.
Otherwise when settlement plate at a time between in section with the rising of surveyed soil layer, piston extends, " belt " winding number of turns on " cylindrical reel " reduces, the b end of " belt " equals the elongation of this time period inner carrier around the counter-rotational displacement of the lines amount of axle center institute of " cylindrical reel ", also equal the ascending amount of interior settlement plate of this time period.
Three, " settling amount electric probe device " is fixed in the firm waterproof sealing can in " piston type shift gear " top, and draws signal cable and be connected to " monitoring instrument ", and there is waterproof wiring terminal sealing cable and sedimentometer shell junction.In cable, have signal wire and supply lines, while making to measure, " monitoring instrument " interior power supply can be " settling amount electric probe device " power supply." settling amount electric probe device " inside comprises following Liang Ge mechanism:
1, displacement drive mechanism
As Fig. 3, Fig. 4, " belt " b end is connected with " cylindrical reel " side in " settling amount electric probe device "." belt " is wound around side by side multi-turn (be wound around the number of turns and can need amendment according to range) on " cylindrical reel " side.In " cylindrical reel ", there is vortex ring spring to make " belt " all the time in tensioned state.There is fine thread " cylindrical reel " side, and belt crouches in thread groove, makes belt being wound around side by side all the time when " cylindrical reel " emitted or reclaimed.In the time that belt a end pulling force reduces, make belt and flow back to twine on " cylindrical reel " side.The axle center of " cylindrical reel " and the turning axle of " angular displacement sensor " interfix and coaxially.Therefore the angular displacement that the angular displacement in the time that " cylindrical reel " rotates and " angular displacement sensor " turning axle rotate equates and synchronizes increase and decrease.
When settlement plate at a time between in section with the sinking of surveyed soil layer (or rising), it is that the settling amount (or ascending amount) of the soil layer of surveying in this time period is L that the b of " belt " holds the displacement of the lines amount of rotating around its axle center in " cylindrical reel " side, the girth of " cylindrical reel " is C, and the anglec of rotation that in this time period, " cylindrical reel " rotates with " belt " this time period interior angle displacement increment that " angular displacement sensor " surveyed is ⊿ θ (unit is radian).:
2, displacement is converted into digital electric signal mechanism
In the time that settlement plate sinks (or rising) with surveyed soil layer in section between at a time, " angular displacement sensor " can record interior angular displacement increasing amount ⊿ θ of this time period.The type of " angular displacement sensor " can be used: resistance-type rotary encoder, absolute type photoelectric rotary coder, absolute type electromagnetic rotary scrambler.
Method (1): " angular displacement sensor " uses resistance-type rotary encoder, the simulating signal value of scrambler output changes into through A/D converter (analog to digital converter) digital signal that value is R.The angle θ that value R and scrambler record is linear, therefore at a time between in section the pass between increasing amount ⊿ R and the angular displacement increasing amount ⊿ θ that scrambler records of R be: ⊿ θ=k ⊿ R, k is that fixed conversion constant can be tried to achieve according to the characterisitic parameter of scrambler and A/D converter, and therefore k is known constant.
:
The simulating signal of resistance-type rotary encoder output changes digital signal into through A/D converter, and this digital signal is imported value R into " monitoring instrument " from sedimentometer by signal cable.Thereby ensured that in the transmission of long line signal can be because decay affects measurement precision, and measuring accuracy is not subject to external electromagnetic signal and disturbs.
Mode (2) and mode (3):
" angular displacement sensor " uses absolute type photoelectric rotary coder or absolute type electromagnetic rotary scrambler, scrambler all can directly be exported the digital signal that value is R, the angle θ that value R and scrambler record is linear, therefore both at a time between section in increment relation be: ⊿ θ=k ⊿ R, k is fixed conversion constant, by scrambler, manufacturer provides, and is known constant.
:
This digital signal is imported value R into " monitoring instrument " from sedimentometer by signal cable.Thereby ensure that signal can be because decay affects measurement precision in long line transmission.
Four, " settlement plate "
Settlement plate is fixed on tested soil layer, and " settling amount electric probe device " received by a firm steel pipe connecting in settlement plate below, thereby the settling amount of settlement plate place soil layer is delivered to " piston type shift gear ".Five, " monitoring instrument " comprises following Liang Ge mechanism
1, the processing of signal and computing circuit
" monitoring instrument " receives the real time digital signal of being exported by sedimentometer from cable, this digital signal is exported value R to single-chip microcomputer after the signal processing circuit in " monitoring instrument ".The value R ' of the digital signal that settling amount monitoring start time point is surveyed has been recorded in the internal storage of monitoring instrument, and the numerical value of surveying when R ' adopts sedimentometer just to bury underground conventionally also can be selected the measured value of required start time point voluntarily.By Single Chip Microcomputer (SCM) program computing, digital signal value of single-chip microcomputer output is from settling amount monitoring start time point to the tested solum settlement amount L in during this period of time between this monitoring time point in " monitoring instrument ".The reduction formula that single-chip microcomputer moves is:
2, display circuit
The digital signal value of the single-chip microcomputer output in " processing of signal and computing circuit " is settling amount L.After this digital signal is processed by display drive circuit, settling amount L is presented on the display screen of " monitoring instrument " in real time.
The using method of achievement of the present invention is: as shown in Figure 1 and Figure 2, " sedimentometer bottom extension rod " is fixed on to the underground anchor point that sedimentation rock stratum does not occur, its upper end is connected with sedimentometer " piston type shift gear ", " settling amount electric probe device ", " settlement plate " in turn, and settlement plate is fixed on tested soil layer.Sedimentometer is connected to " monitoring instrument " by the signal cable of drawing in " settling amount electric probe device ", thereby can directly read accurately in real time the settling amount of current settlement plate place soil layer.
Tested solum settlement amount is converted into the measured angular displacement in sedimentometer inside " angular displacement sensor " by " piston type shift gear " in sedimentometer.This angular displacement and tested solum settlement amount are linear.This angular displacement is converted into digital signal and sends monitoring instrument to.Monitoring instrument can be by drawing the settling amount of tested soil layer after this angular displacement calculation process, and can be by the settling amount that shows tested soil layer directly perceived in real time of the display screen in monitoring instrument.The output signal of sedimentometer is digital signal, and this signal is that in sedimentometer, " angular displacement sensor " detected angular displacement is transformed.This digital signal reaches monitoring instrument through cable, and therefore measuring accuracy is not vulnerable to the impact of length of cable and outside electromagnetic interference.The wide range of sedimentometer and high sensitivity, range can reach 5 meters of above, sensitivity can reach 0.05 millimeter.
Claims (4)
1. angular displacement type sedimentometer under water, it is characterized in that: have a piston type shift gear, piston type shift gear has lower parts casing pipe and upper sleeve, piston type shift gear below connects extension rod, extension rod lower end is anchor point, and piston type shift gear top is connected with measuring box, has angular displacement electric probe device and A/D conversion equipment in measuring box, measuring box upper end joint steel pipe, steel pipe top junction steel plate or steel mesh; In piston type shift gear, have by " driving-belt ", " driving-belt " upper end joint angle displacement electric probe device, angular displacement electric probe device connects A/D conversion equipment, and A/D conversion equipment connects top monitoring instrument at a distance by cable.
2. according to the angular displacement type sedimentometer under water described in claims 1, it is characterized in that: the lower end of " driving-belt " is fixed on the bottom of lower parts casing pipe.
3. according to the angular displacement type sedimentometer under water described in claims 1, it is characterized in that: the lower port in upper sleeve has deflection sheave, deflection sheave is walked around and is fixed on the top of lower parts casing pipe in the lower end of " driving-belt ".
4. according to the angular displacement type sedimentometer under water described in claims 1, it is characterized in that: angular displacement electric probe device has angular displacement sensor, angular displacement sensor is connected on cylindrical winding wheel shaft by coupling shaft, " driving-belt " upper end is fixed on cylindrical reel,, on cylindrical reel, there is vortex ring spring on " driving-belt " top in cylindrical reel inside.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210239932.2A CN102853812B (en) | 2012-07-12 | 2012-07-12 | Angular-displacement underwater settlement gauge |
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| CN201210239932.2A CN102853812B (en) | 2012-07-12 | 2012-07-12 | Angular-displacement underwater settlement gauge |
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| CN102853812B true CN102853812B (en) | 2014-07-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103196421B (en) * | 2013-01-22 | 2015-03-18 | 中交天津港湾工程研究院有限公司 | Automatic inspection type layered settlement instrument |
| CN103938662B (en) * | 2014-04-30 | 2016-09-14 | 中交天津港湾工程研究院有限公司 | Underwater loading pilot system |
| CN105136110B (en) * | 2015-08-21 | 2018-06-05 | 中交天津港湾工程研究院有限公司 | Firm embedded type sedimentation ring and soil body delaminating deposition amount monitoring system |
| CN112504220A (en) * | 2020-11-06 | 2021-03-16 | 中交第四航务工程勘察设计院有限公司 | Telescopic tubular automatic monitoring device and method for surface settlement |
| CN112945426B (en) * | 2021-01-29 | 2022-02-01 | 西南石油大学 | Vibrating wire sensor and stress displacement testing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030039674A (en) * | 2001-11-14 | 2003-05-22 | 주식회사 스마텍지앤씨 | Vertical settlement measuring method and apparatus thereof on soft land |
| CN2750288Y (en) * | 2004-07-27 | 2006-01-04 | 卢新民 | Electrical logging rod type settlement gauge |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11153431A (en) * | 1997-11-18 | 1999-06-08 | Asahi Sangyo Kk | Uneven settlement monitoring device for timbering |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030039674A (en) * | 2001-11-14 | 2003-05-22 | 주식회사 스마텍지앤씨 | Vertical settlement measuring method and apparatus thereof on soft land |
| CN2750288Y (en) * | 2004-07-27 | 2006-01-04 | 卢新民 | Electrical logging rod type settlement gauge |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平11-153431A 1999.06.08 |
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