CN104062043B - Magnetic bullet cable tension sensor and measuring system thereof that a kind of circumferential slip is measured - Google Patents
Magnetic bullet cable tension sensor and measuring system thereof that a kind of circumferential slip is measured Download PDFInfo
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- CN104062043B CN104062043B CN201410257775.7A CN201410257775A CN104062043B CN 104062043 B CN104062043 B CN 104062043B CN 201410257775 A CN201410257775 A CN 201410257775A CN 104062043 B CN104062043 B CN 104062043B
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- cable tension
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Abstract
The invention discloses magnetic bullet cable tension sensor and measuring system thereof that a kind of circumferential slip is measured, it is mainly made up of list " U " shape electromagnet and the encapsulation of slide rail tubular. Its measuring method is: by rocking bar, " U " shape electromagnet is separated with bridge rope, rotate cap, electromagnet is fallen and is fixed on bridge rope surface, gather induced signal now, repeat above-mentioned steps, complete the measurement of at least 12 different directions, by the induced signal of all acquisitions integration respectively, then be weighted on average, using this as effective integral voltage value, stress-integral voltage relational expression of substitution bridge rope can obtain bridge rope stress value size. This sensor construction is owing to being detachable, easy for installation, and because the electromagnet in encapsulation can carry out circumferentially sliding and measuring, the impact of the special construction that has reduced greatly even to eliminate bridge rope on measurement result, can accurately measure cross section is non-circular bridge rope stress value.
Description
Technical field
The present invention relates to field of non destructive testing, the body rope and the cross section that are adapted to built bridge are non-circular various ruleThe stress measurement of lattice cable wire, is specifically related to magnetic bullet cable tension sensor and measuring system thereof that a kind of circumferential slip is measured.
Background technology
Bridge rope is as the important load-carrying member of cable-stayed bridge, is subject to for a long time the impact of factor such as shake of alternate stress, wind, very easily makesBecome the excessive or concentrated even damage of the local fatigue of bridge rope, stress, the safety that jeopardizes bridge, and the stress intensity of bridge rope is to weigh bridgeThe important symbol of body structure state.
At present, in the stress measurement of oblique pull pontic rope, use more method to have: hydraulic method, determination of pressure sensor, frequentlyRate is measured, magnetoelasticity method (magnetic flux method). Power output is large, signal is strong owing to having for wherein magnetoelasticity method, simple in structure,The advantage such as the strong and dynamic response of long service life, overload protection ability is good, increasingly extensive in the application in bridge rope stress measurement field.
The body Cable Structure of the cable-stayed bridge of practical application closes up, tightens and encapsulate by some High Strength Steel cables are parallelIn high-strength polyester band, form, the cross section of its cable wire part is not traditional circle, but regular hexagon. At present shouldWith more telescopic magnetic bullet cable tension sensor, although not affected by cable wire cross section, its on-the-spot installation is difficult to unified markFixed, when its practical application, be restricted.
Number of patent application 01240121.8 discloses a kind of piezomagnetic Suo Li sensing of applying in post-tensioning anchor cable systemDevice (telescopic magnetic bullet cable tension sensor), although can accurately measure the stress value of bridge rope, shortcoming is to build up at bridgeBefore install, need on-the-spot coiling for the body rope of built bridge, not only waste time and energy, to operative employee's technical requirementHeight, and more difficult the unified of coil parameter of realizing demarcated. Number of patent application 200610054598.8 discloses a kind of differential type temperatureDegree offset-type bridge cable force on-line testing method and test macro, it has not only solved traditional magnetic bullet cable tension sensor and has pacified at the sceneThe problem of dress aspect, has also overcome the impact of temperature on measurement result, but due to it and reckon without the particularity of bridge Cable Structure,And measure time need to contrast the bridge rope that another root does not stress, make this sensor can not be applied to bridge rope shouldPower is measured.
Summary of the invention
In order to overcome above-mentioned technical barrier, the magnetic bullet Suo Lichuan that the object of the present invention is to provide a kind of circumferential slip to measureSensor and measuring system thereof, it can measure and monitor oblique pull pontic rope stress, can enter for the special construction of bridge ropeRow design is perfect, the measure error that reduction or elimination cause due to the particularity of bridge Cable Structure.
The present invention has designed cylindrical shape encapsulating structure according to the architectural feature of bridge rope, and its cap is made up of two parts, itsThe first half has been installed lowering or hoisting gear, can make " U " shape electromagnet separate or be fixed on bridge rope surface, and two caps pass through spiral shellAfter tying and connecing, can on the barrel of dove-tail, circumferentially slide; According to magnetoelasticity, the stress of cable wire and its materialMagnetic conductivity is varied to direct ratio, and magnetic conductivity variable quantity and integral voltage are linear; If measure before to bridge rope carry out stress-Integral voltage is demarcated, and can extrapolate Suo Li size by measuring integral voltage value. It is characterized in that measuring process comprises:
(1) by two semicircle barrels by bolted in bridge rope surface;
(2) the lifting rocking bar of cap in rotation, makes " U " shape electromagnet rise to extreme higher position, and upper and lower cap is installedTo barrel, make its form sealing, structure slidably;
(3) fall " U " shape electromagnet and be fixed in bridge rope surface, applying pulse excitation to excitation coil, will detectThe induced voltage collection of coil is also stored in database;
(4) rotate lifting rocking bar " U " shape electromagnet is separated with bridge rope, after slip cap, repeating step (3), completesThe signals collecting work of at least 12 directions;
(5) by the induced signal collecting for 12 times integration carry out weighted average respectively, get its value for effective integral electricityPressure value, as stress judgment criteria, obtains the stress value of bridge rope according to cable stress-integral voltage calibration curve.
The measuring system that realizes above-mentioned steps, is characterized in that: this system comprise successively the magnetic bullet cable tension sensor that connects,One-level filter amplification circuit, analog integrator circuit, secondary filter amplifying circuit, A/D conversion and acquisition system, signal are processed softPart, display screen.
The invention has the beneficial effects as follows, sensor can not only be adapted to conventional circular cable wire, is also adapted to oblique pull ponticRope and cross section are the force measurement of answering of non-circular all size cable wire, and simple in structure, easy for installation, antijamming capabilityBy force.
Brief description of the drawings
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is oblique pull pontic Cable Structure schematic diagram;
Fig. 2 is sensor generalized section;
Fig. 3 is sensors sides structural map;
Fig. 4 is measuring system schematic diagram;
Fig. 5 is integral voltage oscillogram.
1. excitation coils in figure, 2. magnetic test coil, 3. bridge rope, 4. goes up cap, 5. descends cap, 6. lowering or hoisting gear, 7." U " shape electromagnet (or yoke), 8. magnetic pole, 9. dovetail groove, 10. barrel, 11. aviation plugs, 12. one-level filter amplification circuit,13. analog integrator circuits, 14. secondary filter amplifying circuits, 15.A/D conversion and acquisition system, 16. signal processing softwares, 17.Display screen.
Detailed description of the invention
Bridge rope stress measurement device of the present invention, its measuring principle is magnetoelasticity (the contrary mangneto based on ferrimagnetFlex effect, piezomagnetism),, in the time that ferrimagnet is magnetized in external magnetic field, if changing, its stress state (drawsPower, pressure or torsion), also corresponding change of its parameter of magnetic characteristic (relative permeability, coercivity, remanent magnetism etc.). The stress of cable wireBe varied to direct ratio with the magnetic conductivity of its material, and magnetic conductivity variable quantity and integral voltage are linear, if measure front to bridge ropeCarrying out stress---integral voltage is demarcated, and can measure integral voltage value by acquisition and obtain Suo Li size.
As shown in Figure 1, the structure of the oblique pull pontic rope of practical application has comprised that cross section is orthohexagonal cable wire part,Once traditional bypass type sensor can only be measured in some directions after installing and fixing, if be mounted to A place, due toProbe and the distance of cable wire are less, induced signal maximum now; If probe is mounted to B place, induced signal minimum, andIn actual installation process, because the protective layer outside cable wire stops, the installation site of sensor has no way of finding out about it, the single side of this employingTo the sensor of measuring, will probably in the time that stress is evaluated, the stress state of bridge rope be caused to erroneous judgement.
In order to reduce or to eliminate the impact apart from measurement result of lifting from due to probe and cable wire, at least should be at 12Direction is measured, and after all measurement results are averaged, can eliminate the effects of the act, and its measuring process comprises:
(1) by two semicircle barrels 10 by bolted in bridge rope surface;
(2) the lifting rocking bar 6 of cap 4 in rotation, makes " U " shape electromagnet 7 rise to extreme higher position, and upper and lower encapsulation is installed4,5 be placed on barrel 10, make it form a sealing, structure slidably;
(3) fall " U " shape electromagnet 7 and be fixed in bridge rope 3 surfaces, applying pulse excitation to excitation coil 1, will examineThe induced voltage collection of test coil 2 is also stored in signal processing software 16;
(4) rotate lifting rocking bar 6 " U " shape electromagnet 7 is separated with bridge rope 3, cap 4 is slided 30 ° and spent, repeating step(3), complete the signals collecting work of at least 12 directions;
(5) by the integration carry out weighted average respectively of 12 groups of induced signals in signal processing software 16, as effectively long-pendingComponent voltage value, bridge rope stress-integral voltage relational expression that substitution is stored in database 18 in advance draws now answering of bridge rope 3Power value.
As shown in Figure 2, sensor is fixed on bridge rope 3 by barrel 10 to be shown magnetic bullet cable tension sensor schematic diagram of the present inventionFace, its edge is carved with annular dovetail slot 9. Upper and lower two caps 4,5 are spliced by bolt and are positioned on barrel 10, and can pass throughDovetail groove 9 is free to slide. Wherein, two lowering or hoisting gears 6 have also been installed in upper cap 4, can make " U " shape electromagnet 7 separate orBeing anchored on bridge rope 3 surfaces and 1 aviation plug 11 is connected with excitation coil 1 and magnetic test coil 2 respectively.
In the structural map shown in Fig. 3, two semicircle barrels 10 are all having semicircle clasp near its external port place, whenAfter two barrels 10 close up, can and be fixed on bridge rope 3 surfaces by bolt fastening.
As shown in Figure 4, measuring system of the present invention comprises the magnetic bullet cable tension sensor, the one-level filter and amplification electricity that connect successivelyRoad 12, analog integrator circuit 13, secondary filter amplifying circuit 14, A/D conversion and acquisition system 15, signal processing software 16, aobviousShow screen 17.
Before implementing to measure, should use the bridge rope of same specification in the range of stress of its work, to carry out static tension experiment,Using this sensor to carry out stress---the demarcation of integral voltage, is deposited in signal processing software 16, as actual measurementStress evaluation criterion.
While implementing to measure, the positive and negative or pulsed magnetic field being produced by excitation coil 1 forms in " U " shape electromagnet 7 and bridge rope 3Closed magnetic circuit, and bridge rope 3 is magnetized, magnetic test coil 2 produces the induced electromotive force (stress that this induced signal has comprised bridge rope immediatelyInformation). Measuring system taking pumping signal as square-wave signal is example, and the induced signal of 12 directions that magnetic test coil 2 picks up is logicalCross after one-level filter amplification circuit 12, as input access analog integrator circuit 13, this integrating circuit is by original induction letterAfter number integration, changed by A/D and acquisition system 15 gathers and be saved to signal processing software by secondary filter amplifying circuit 14 is rearIn 16, its oscillogram is as shown in Figure 5. Acquisition software extracts maximum place the amassing as a direction measurement of integral voltage waveformComponent voltage value, by the integral voltage value weighted average of 12 directions, as effective integral voltage value, and it brings signal processing intoDemarcation relational expression in software 16, draws the now stress value of bridge rope 3.
Claims (5)
1. a magnetic bullet cable tension sensor that circumferentially slides and measure, is characterized in that: sensor construction is mainly by list " U " shape electromagnetismIron, lowering or hoisting gear and the encapsulation of slide rail tubular form; The encapsulation of slide rail tubular is made up of upper and lower two caps and two barrels, onLowering or hoisting gear is installed in cap, and single " U " shape electromagnet is separated or is anchored on bridge rope surface, upper and lower two by lowering or hoisting gearPiece cap is spliced by bolt and is positioned on barrel, and barrel edge is carved with dovetail groove, and upper and lower two caps can pass through dovetail grooveBe free to slide.
2. the magnetic bullet cable tension sensor that a kind of circumferential slip according to claim 1 is measured, is characterized in that: slide rail type encapsulationLid makes electromagnet can circumferentially slide and complete the measurement of at least 12 directions, thereby reduces because the special construction of bridge rope is ledThe impact of the probe lift off was more difference causing on measurement result.
3. the magnetic bullet cable tension sensor that a kind of circumferential slip according to claim 1 is measured, is characterized in that: be adapted to builtBecoming body rope and the cross section of bridge is the force measurement of answering of non-circular all size cable wire.
4. the magnetic bullet cable tension sensor that a kind of circumferential slip according to claim 1 is measured, its measuring process comprises:
(1) by two semicircle barrels by bolted in bridge rope surface;
(2) the lifting rocking bar of cap in rotation, makes list " U " shape electromagnet rise to extreme higher position, upper and lower encapsulation is installed and is placed on cylinderOn wall, make its form sealing, structure slidably;
(3) fall list " U " shape electromagnet and be fixed in bridge rope surface, applying pulse excitation, gathering and preserve its induction letterNumber;
(4) rotate lifting rocking bar list " U " shape electromagnet separated with bridge rope, after rotation cap, repeating step (3), complete toThe signals collecting of few 12 directions;
(5) by the induced signal collecting for 12 times integration carry out weighted average respectively, get its value for effective integral magnitude of voltageAs stress judgment criteria, substitution bridge rope stress-integral voltage relational expression draws the now stress value of bridge rope.
5. a measuring system for the magnetic bullet cable tension sensor that circumferential slip according to claim 1 is measured, its feature existsIn: this system comprises the magnetic bullet cable tension sensor, one-level filter amplification circuit, analog integrator circuit, the secondary filter that connect successivelyAmplifying circuit, A/D conversion and acquisition system, signal processing software and display screen.
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| CN201410257775.7A CN104062043B (en) | 2014-06-11 | 2014-06-11 | Magnetic bullet cable tension sensor and measuring system thereof that a kind of circumferential slip is measured |
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| CN201410257775.7A CN104062043B (en) | 2014-06-11 | 2014-06-11 | Magnetic bullet cable tension sensor and measuring system thereof that a kind of circumferential slip is measured |
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| CN104062043B true CN104062043B (en) | 2016-05-18 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092383A (en) * | 2016-06-23 | 2016-11-09 | 南昌航空大学 | Magnetic bullet cable force measurement method and restructural magnetic-elastic stress sensor thereof |
| CN106644229B (en) * | 2017-01-20 | 2022-09-20 | 华中科技大学 | In-service cable force detection device and method |
| CN109385956B (en) * | 2017-08-08 | 2023-05-26 | 尹恒 | Intelligent suspender or inhaul cable structure with built-in extension sensor for monitoring stress |
| CN109682505A (en) * | 2019-01-31 | 2019-04-26 | 重庆大学 | A kind of cable force measurement device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871217A (en) * | 1973-04-25 | 1975-03-18 | Rucker Co | Continuous cable tension monitor |
| CN2476011Y (en) * | 2001-05-23 | 2002-02-06 | 祝向永 | Piezomagnetic cable tension sensor for post-tensioning anchor cable system |
| CN201237962Y (en) * | 2008-07-11 | 2009-05-13 | 华中科技大学 | Magnetizing assembly for stay cable |
| CN201373794Y (en) * | 2009-03-17 | 2009-12-30 | 中国地质大学（武汉） | Encircling type transmission mechanism for patrolling oil and gas pipeline leakage |
| CN102435666A (en) * | 2011-10-11 | 2012-05-02 | 南昌航空大学 | Method for evaluating stress concentration and fatigue damage based on feature permeability detection |
| CN102519633A (en) * | 2011-11-30 | 2012-06-27 | 浙江大学 | Magneto-elastic and magneto-electric effect type stress monitoring device |
| CN103499404A (en) * | 2013-10-10 | 2014-01-08 | 南昌航空大学 | Measuring device and measuring method for alternating stress of ferromagnetic component |
-
2014
- 2014-06-11 CN CN201410257775.7A patent/CN104062043B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3871217A (en) * | 1973-04-25 | 1975-03-18 | Rucker Co | Continuous cable tension monitor |
| CN2476011Y (en) * | 2001-05-23 | 2002-02-06 | 祝向永 | Piezomagnetic cable tension sensor for post-tensioning anchor cable system |
| CN201237962Y (en) * | 2008-07-11 | 2009-05-13 | 华中科技大学 | Magnetizing assembly for stay cable |
| CN201373794Y (en) * | 2009-03-17 | 2009-12-30 | 中国地质大学（武汉） | Encircling type transmission mechanism for patrolling oil and gas pipeline leakage |
| CN102435666A (en) * | 2011-10-11 | 2012-05-02 | 南昌航空大学 | Method for evaluating stress concentration and fatigue damage based on feature permeability detection |
| CN102519633A (en) * | 2011-11-30 | 2012-06-27 | 浙江大学 | Magneto-elastic and magneto-electric effect type stress monitoring device |
| CN103499404A (en) * | 2013-10-10 | 2014-01-08 | 南昌航空大学 | Measuring device and measuring method for alternating stress of ferromagnetic component |
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