CN104280452B - Wire rope defect scanning system based on circular array weak magnetic detection sensor - Google Patents
Wire rope defect scanning system based on circular array weak magnetic detection sensor Download PDFInfo
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- CN104280452B CN104280452B CN201410521209.2A CN201410521209A CN104280452B CN 104280452 B CN104280452 B CN 104280452B CN 201410521209 A CN201410521209 A CN 201410521209A CN 104280452 B CN104280452 B CN 104280452B
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Abstract
The invention provides a wire rope defect scanning system based on a circular array weak magnetic detection sensor, and belongs to the technical field of nondestructive testing. The wire rope defect scanning system comprises a linear guide rail scanning mechanism, a circular array weak magnetic detection sensor, a steel rope clamping assembly, a motion control unit and a data collection unit, wherein the linear guide rail scanning mechanism can carry with the circular array weak magnetic detection sensor to carry out uniform linear motion relative to a wire rope at controllable speed. The circular array weak magnetic detection sensor provided by the invention adopts helmholtz coils and high-sensitivity tunnel magnetoresistance elements which are evenly distributed along the circumference of the wire rope, so that the direct-current excitation power consumption is low, and no adsorption capacity action is generated on the wire rope; a flexible printed circuit board for welding the tunnel magnetoresistance elements is adopted, so that the wire rope defect scanning system is small in volume and easy to bend, and is capable of achieving axial and circumferential positioning of wire fractures and abrasion; and the linear guide rail scanning mechanism and the wire rope clamping assembly can ensure the consistent lift-off distance between the weak magnetic detection sensor and the wire rope in the detection process.
Description
Technical field
It is that one kind is based on circumference array particular for the Non-Destructive Testing of cable wire the invention belongs to technical field of nondestructive testing
The cable wire defect scanning system of formula weak magnetic detection sensor.
Background technology
General being twisted by many high-tensile steel wires of cable wire is coiled into stock, then is formed around cable core coiling by several rope strands.It has height
The advantages of tension, low bending resistance and low shearing resistance, be widely used in each main industries of the national economy such as coal, metallurgy, building, tourism and
Department.There is all kinds of defects, including cable wire material cross-section loss (LMA) for various reasons, often in use in cable wire
With local defect (LF).Cable wire these damage trigger accident by crisis the person and equipment safety.Therefore, cable wire defect is developed
Dynamic Non-Destruction Measurement, accurately obtains defect information, carries out cable wire safety evaluation and proposes to remedy scheme in time, to ensure cable wire
Using safety, cable wire service life is improved, with important society and economic worth.
From 1906, First steel rope flow detector emerged so far in the world, and various steel wire rope Non-Destructive Testing sides have been developed
Method, mainly including supercritical ultrasonics technology, electric vortex method and leakage method etc..Ultrasonic wave is decayed in complicated cable wire seriously and it is in cable wire
Propagation characteristic is complex, and the extraction to flaw indication is more difficult；Electric vortex method is limited by Kelvin effect, and detection depth has
Limit, can only typically detect cable wire cosmetic bug.Comparatively speaking, leakage method is more ripe cable wire defect detecting technique, is had
Spatial resolution is high for detection, the response time is fast, can on-line checking the advantages of.
The excitation mode of cable wire Magnetic Flux Leakage Inspecting is divided into passive excitation and active excitation.More than passive excitation using strong magnetic force you
Iron boron permanent magnet uses heavy yoke as magnetic conductor as excitation source.The powerful absorption affinity of permanent magnet and sensor are huge
Big heavy profile so that sensor is difficult to successfully relative uniform motion with cable wire, and is difficult to ensure that sensor and cable wire
The uniformity of lift-off distance.Traditional active exciting method need to be using voltage-stabilized power supply to being passed through larger current, line in magnet exciting coil
Circle heating effect is serious, is not easy to practical application.
During cable wire defects detection, sensor should be consistent with the lift-off distance of cable wire to be measured, traditional holding
Both lift-off are that, by installing guide wheel or piston shoes, the method can cause the abrasion of guide wheel or piston shoes apart from consistent method.China
Patent CN202994584U《A kind of simple cable wire stretching device》The cable wire drawing process of proposition can be used to design pretension cable wire
Device, designs the cable wire defect scanning system of Entirely contactless and constant lift-off distance on this basis.
The content of the invention
It is an object of the invention to provide a kind of the weak based on Circle-Array column of simulated field in laboratory conditions detection
The low-intensity magnetic field of magnetic measurement sensor, the cable wire defect scanning system of low-power consumption.System not only has high resolution and high sensitivity,
And strong magnetic adsorbability and conventional active detection heating and the huge weakness of power supply unit, Neng Goushi of passive detection can be avoided
Existing at the uniform velocity relative motion between cable wire and sensor, it is ensured that the uniformity of both lift-off distances.
The present invention proposes the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor, and it includes：Straight line
Guide tracked sweep mechanism, Circle-Array column weak magnetic detection sensor, cable wire clamp assemblies, motion control unit and data acquisition list
Unit.
The linear guide rail type sweep mechanism is used for regulating system level and carries Circle-Array column weak magnetic detection sensor
And make it that relative motion occur with cable wire；
The Circle-Array column weak magnetic detection sensor is arranged on linear guide rail type sweep mechanism, for uniform vertically
Magnetization detected steel cable, shielding environmental magnetic field and detection cable wire flaw indication；
The cable wire clamp assemblies are used for pretension and fixing tightwire；
The motion control unit and data acquisition unit are led with straight line respectively by motion control card and data collecting card
Rail sweep mechanism and Circle-Array column weak magnetic detection sensor are communicated, and the motion and treatment sensor for controlling guide rail are gathered
Flaw indication.
Especially, the linear guide rail type sweep mechanism is solid including horizontal adjustment base, XY two axle movements guide rail and cable wire
Determine device mounting rail.
The horizontal adjustment base is assembled by angled seat and aluminium section bar.Wherein there are four aluminium section bars placed vertically to distinguish
It is fixed in four angled seats of horizon adjustable, two pairs of aluminium section bars are fixed in four aluminium section bars placed vertically by corner connector
Portion, top structure is ibid.Horizontal adjustment base is used for regulating system level.
Three guide rails and two motors that the XY two axle movements guide rail is assembled by I-shaped are constituted.Wherein two parallel
Guide rail constitutes X kinematic axis, and guide rail normal thereto constitutes Y motion axle.The closed slide of X-axis is fixed on horizontal adjustment base top
On two aluminium section bars, Y-axis guide rail is fixed on two slide units of X-axis guide rail.Two motors respectively with one end phase of two axis rails
Even, wherein X-axis guide rail is realized being synchronized with the movement by power transmission shaft.Two axle movement guide rail is used to carry Circle-Array column weak magnetic detection biography
Sensor simultaneously realizes the relative motion of sensor and cable wire.
The steel cable fixation device mounting rail paralleled by X axis guide rail, is fixedly mounted on horizontal adjustment base top, for installing
Steel cable fixation device.
Especially, the Circle-Array column weak magnetic detection sensor includes：Sensor holder, Helmholtz coil,
Tunnel magnetoresistive probe, Split type magnetic shielding case, printed circuit board.
The sensor holder is made up of base and clamp of sensor.The base is fixed on Y-axis guide rail slide unit,
All-wing aircraft connected in star is provided with the middle part of it, wherein both wings groove is used for fixed excitation structure, and central slot is used to fix sensor folder
Tool.The upper and lower two parts of the clamp of sensor point, wherein the latter half is the cuboid for being provided with half slot, and its bottom is fixed on
In groove in the middle part of base, top half is the semicircular structure with ears, and its ears structure is solid by bolt with the latter half
It is fixed.Sensor holder is used to clamp Split type magnetic shielding case and fixed Helmholtz coil.
The Split type magnetic shielding case is two symmetrical shell structures, and in a ring, there is annular end cap at two ends for its cross section.
Split type magnetic shielding case is used to shield environmental magnetic field, in nearly zero magnetic field space of shielding cavity internal structure.
The Helmholtz coil by two loop coils and lithium battery group into.Two loop coils are respectively fitted over shielding knot
Structure two ends are simultaneously fixed in the both wings groove of base, and both connect and the sense of current is consistent.Helmholtz coil is used for vertically
The magnetization cable wire that the heart is passed through therefrom.
The tunnel magnetoresistive probe is made up of tunnel magnetoresistance element and sensor retainer ring.The sensor retainer ring is pipe
Shape structure, itself and Split type magnetic shielding case inner chamber interference fits, its outer wall is uniformly distributed circumferentially N (2≤N≤16) individual groove,
Its inwall is uniformly distributed N number of shallow slot, and shallow slot is used for glue envelope protection flexible circuit board, and shallow slot is corresponding with unit with grooves in outer wall position
And be interconnected for through flexible circuit board.The tunnel magnetoresistance element is uniformly distributed and glue sealing is solid due to sensor
Determine in the groove of ring.
The printed circuit board is made up of rigid printed circuit plate (PCB) and flexible circuit board (FPC).The hardness
Printed circuit board is installed on the base of sensor holder, and it is turned 1V circuits by 3~12V and signal converting circuit is constituted,
For for tunnel magnetoresistance element is powered and sends detection signal to data collecting card.Weld tunnel in described flexible circuit board one end
Road magnetoresistive element, one end connection rigid printed circuit plate, it is used to transmit electric energy and to hardness printing electricity for tunnel magnetoresistance element
Road plate output detection signal.
Especially, the cable wire clamp assemblies include：Cable pre-tight apparatus and steel cable fixation device.
The cable pre-tight apparatus are made up of feed-through hydraulic pump, baffle plate, rigid base and anchor head, and it is used for pretension steel
Rope, stretching cable wire to collimating status.
The steel cable fixation device is used in pairs, and it is made up of base, support and fixing bolt.Base is fixedly mounted on steel
On rope fixing device mounting rail.Four fixing bolts pass through sensing center from " returning " shape support four direction respectively.Cable wire is fixed
Device is used to adjust cable wire locus and grips cable wire to be measured.
The sensor holder uses pmma material, the Helmholtz coil to use enamel covered wire material,
The Split type magnetic shielding case uses low-carbon steel material, and the sensor retainer ring uses pmma material.
The sensor holder, Helmholtz coil, split type shielding case, sensor retainer ring and cable wire are same
Axle.
The internal diameter of the sensor retainer ring compares detected steel cable than the small 1mm~2mm of internal diameter of split type magnetic screen shell end cap
Big 1mm~the 2mm of diameter.Its inner surface is uniformly distributed circumferentially N number of deep 0.5mm~1mm, 1mm~2mm wide from sensor support one
End extends to the shallow slot in the middle part of it, and shallow slot is relative with unit with grooves in outer wall position and is interconnected.
The motion control unit is used to control the motion of line slideway.The data acquisition unit is used to receive sensor
The signal of transmission is simultaneously by signal output after treatment to computer.The computer passes through motion control card control guide rail uniform motion
Speed and flaw indication is gathered by data collecting card, and by the treatment to cable wire defect and magnetic leakage signal, judge that cable wire has
The position and size of zero defect and calculating defect, complete the qualitative detection to cable wire and quantitative measurment.
The present invention can advantage is obtained that and beneficial effect by using above-mentioned technical proposal：The present invention passes through level
The level of adjusting base regulating system, by cable wire clamp assemblies pretension and fixing tightwire, ensure that cable wire and circumference well
The one of array weak magnetic detection sensor lift-off distance makes peace and avoids both contact wears.The present invention passes through motion control list
Unit and motion guide rail have been effectively ensured the at the uniform velocity relative motion of Circle-Array column weak magnetic detection sensor and cable wire.The present invention is used
The Helmholtz coil of tunnel magnetoresistance element and lithium battery power supply, effectively reduce Circle-Array column weak magnetic detection sensor with
The absorption affinity of cable wire, overcomes the heating of active excitation and the problem that power supply unit is huge.
Brief description of the drawings
Fig. 1 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Structure chart；
Fig. 2 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Assembling schematic diagram；
Fig. 3 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Circle-Array column weak magnetic detection sensor schematic diagram；
Fig. 4 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Circle-Array column weak magnetic detection sensor radial cross-section；
Fig. 5 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Circle-Array column weak magnetic detection sensor axial sectional view；
Fig. 6 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Steel cable fixation device schematic diagram；
Fig. 7 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Coaxial assembling schematic diagram.
In figure：
1st, linear guide rail type sweep mechanism, 2, Circle-Array column weak magnetic detection sensor, 3, cable wire clamp assemblies, 4, motion
Control unit, 5, data acquisition unit, 6, horizontal adjustment base, 6-1, angled seat, 6-2, aluminium section bar, 7, XY two axle movement guide rails,
7-1, X-axis guide rail, 7-2, Y-axis guide rail, 7-3, motor, 8, steel cable fixation device mounting rail, 9, steel cable fixation device, 9-1 is fixed
Base, 9-2, support, 9-3, fixing bolt, 10, cable pre-tight apparatus, 10-1, feed-through hydraulic pump, 10-2, baffle plate, 10-3,
Rigid base, 10-4, anchor head, 11, sensor holder, 11-1 bases, 11-2, clamp of sensor, 12, Split type magnetic shielding
Shell, 13, Helmholtz coil, 14, tunnel magnetoresistive probe, 14-1 tunnel magnetoresistance elements, 14-2, sensor retainer ring, 15, printing
Circuit board, 15-1, rigid printed circuit plate PCB, 15-2, flexible circuit board FPC, 16, cable wire.
Specific embodiment
The present invention carries Circle-Array column weak magnetic detection sensor by the motion guide rail on horizontal adjustment base
The cable wire fixed along pretension carries out defect scanning.The present invention can effectively ensure that the lift-off distance between sensor and cable wire, and
Relative motion between the two, greatly reduces absorption affinity of the sensor to cable wire, reduces sensor weight, and shielding environmental magnetic field is done
Disturb, improve the magnetized uniformity of cable wire, and to the detection positioning and quantitative accuracy of defect.
Specific embodiment of the invention is described further below in conjunction with the accompanying drawings.Herein it should be noted that implementing
The explanation of mode is used to help understand the present invention, does not constitute limitation of the invention.
Fig. 1 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Structural representation.
The cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor includes in the present embodiment：Line slideway
Formula sweep mechanism 1, Circle-Array column weak magnetic detection sensor 2, cable wire clamp assemblies 3, motion control unit 4 and data acquisition list
Unit 5.The linear guide rail type sweep mechanism 1 includes：Horizontal adjustment base 6, XY two axle movements guide rail 7 and steel cable fixation device peace
Dress beam 8；The Circle-Array column weak magnetic detection sensor 2 includes：Sensor holder 11, the Split type magnetic shielding case 12, last of the twelve Earthly Branches
Mu Huozi coils 13, tunnel magnetoresistive probe 14 and printed circuit board 15；The cable wire clamp assemblies 3 include steel cable fixation device 9
With cable pre-tight apparatus 10.
The horizontal adjustment base 6 is used to fix XY two axle movements guide rail 7 and steel cable fixation device mounting rail 8；The XY
Two axle movement guide rail 7 is used for fixed-circumference array weak magnetic detection sensor 2；The steel cable fixation device mounting rail 8 is used to pacify
Dress fixing tightwire fixing device 9；The sensor holder 11 is used to fix Split type magnetic shielding case 12 and Helmholtz's line
Circle 13；The Helmholtz coil 13 is used for the cable wire 16 to be measured of uniform magnetization vertically；The Split type magnetic shielding case 12 is used for
Shielding environmental magnetic field and fixed tunnel magnetoresistive probe 14；Tunnel magnetoresistive probe 14 is used to detect the defect of cable wire 16；The data are adopted
Collection unit 5 is used for the detection signal of reception processing tunnel magnetoresistive probe 14；The motion control unit 4 is used to control the axles of XY two to transport
The motion of dynamic guide rail 7.
Fig. 2 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Assembling schematic diagram；
The horizontal adjustment base 6 is assembled by angled seat 6-1 and aluminium section bar 6-2, wherein four aluminium profiles placed vertically
Material 6-2 is individually fixed on four angled seat 6-1 of horizon adjustable, and two couples of aluminium section bar 6-2 are fixed on four vertically by corner connector
The aluminium section bar 6-2 middle parts of placement, four, top aluminium section bar 6-2 mounting means is ibid.
The three guide rail 7-1 (7-2) and two motor 7-3 that the XY two axle movements guide rail 7 is assembled by I-shaped constitute.
Wherein two closed slide 7-1 constitute X kinematic axis, and guide rail 7-2 normal thereto constitutes Y motion axle.The closed slide 7-1 of X-axis
It is fixed on the two aluminium section bar 6-2 in the top of horizontal adjustment base 6, Y-axis guide rail 7-2 is fixed on two slide units of X-axis guide rail 7-1
On.The one end of two motor 7-3 respectively with two axis rails is connected, and wherein X-axis guide rail 7-1 realizes being synchronized with the movement by power transmission shaft.
The paralleled by X axis guide rails assembling of the steel cable fixation device mounting rail 8 is fixed on the top of horizontal adjustment base 6.
The steel cable fixation device 9 is fixedly mounted on steel cable fixation device mounting rail 8, and steel cable fixation device 9 makes in pairs
With, its locus for being used to adjust cable wire 16 and it is fixed.
The Circle-Array column weak magnetic detection sensor 2 is fixed on the sliding block of Y-axis guide rail 7-2, the heart therefrom of cable wire 16
Pass through.
Fig. 3 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Circle-Array column weak magnetic detection sensor schematic diagram.The sensor holder 11 is by base 11-1 and clamp of sensor 11-2
Composition.The base 11-1 is fixed on Y-axis guide rail 7-2 slide units, and all-wing aircraft connected in star is provided with the middle part of it, and wherein both wings groove is used
In fixed Helmholtz coil 13, central slot is used to fix clamp of sensor 11-2, and the side of its aerofoil profile groove has for fixing
The groove and screw thread of rigid printed circuit plate 15-1.The clamp of sensor 11-2 points of upper and lower two parts, wherein the latter half is
The cuboid of half slot is provided with, in the groove that its bottom is fixed in the middle part of base 11-1, top half is the semicircle with ears
Structure, its upper and lower two parts are bolted.
Described upper and lower two parts of clamp of sensor 11-2 are matched for clamping tightly the middle part of Split type magnetic shielding case 12；Helmholtz's line
Two coils of circle 13 are respectively fitted over the two ends of Split type magnetic shielding case 12 and are fixed in the wing groove of base 11-1.
15 points of the printed circuit board is rigid printed circuit plate (PCB) 15-1 and flexible circuit board (FPC) 15-2,
Weld tunnel magnetoresistance element 14-1, one end connection PCB 15-1 in FPC15-2 one end.The PCB15-1 uses 3V button cell conducts
Power supply simultaneously provides 1V DC voltages for tunnel magnetoresistance element 14-1 by reduction voltage circuit, its respectively with FPC15-2 and data acquisition
Unit 5 is connected.
Fig. 4 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Circle-Array column weak magnetic detection sensor radial cross-section.The sensor retainer ring 14-2 be tubular structure, its with it is split type
The inner chamber interference fits of magnetic screen shell 12, its outer wall is uniformly distributed circumferentially N (N >=2) individual groove.The tunnel magnetoresistance element 14-1
It is uniformly distributed in the groove of sensor retainer ring 14-2.The cable wire 16, sensor retainer ring 14-2, Split type magnetic shielding case
12nd, Helmholtz coil 13 and clamp of sensor 11-2 are coaxially assembled.
Fig. 5 is the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention
Circle-Array column weak magnetic detection sensor axial sectional view.Two coils series connection of the Helmholtz coil 13 and the sense of current
Unanimously.The internal diameter of the sensor retainer ring 14-2 than the split type end cap of magnetic screen shell 12 the small 1mm~2mm of internal diameter, than tested
Big 1mm~the 2mm of the diameter of cable wire 16.Its inner surface is uniformly distributed circumferentially N number of deep 0.5mm~1mm, width 1mm~2mm from sensor
Support one end extends to the shallow slot of depth 0.5mm~1mm in the middle part of it, and shallow slot is relative with unit with grooves in outer wall position and is interconnected.It is described
By glue sealing due in the groove of sensor retainer ring 14-2, tunnel is welded in described FPC15-2 one end to tunnel magnetoresistance element 14-1
Road magnetoresistive element 14-1, one end connection PCB 15-1, it passes through sensor retainer ring 14-2 to connect the square hole of inside and outside wall groove, and
Glue envelope is protected in the shallow slot of sensor retainer ring 14-2 inwalls.
As shown in fig. 6, Fig. 6 is the cable wire based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention lacking
Fall into scanning system steel cable fixation device schematic diagram.The steel cable fixation device 9 is by firm banking 9-1, support 9-2 and fixing bolt
9-3 is constituted.Firm banking 9-1 is fixedly mounted on steel cable fixation device mounting rail 8, and support 9-2 is by I-shaped and " returning " word
Shape structure assembles, and four fixing bolt 9-3 pass through sensing center from " returning " shape support 9-2 four directions respectively.Cable wire 16
Passed through from " returning " font support 9-2 centers, by turning bolt adjustable cable wire locus and the cable wire that is fixedly clamped.
As shown in fig. 7, Fig. 7 is the cable wire based on Circle-Array column weak magnetic detection sensor provided in an embodiment of the present invention lacking
Fall into scanning system coaxial assembling schematic diagram.The cable wire clamp assemblies 3 include steel cable fixation device 9 and cable pre-tight apparatus 10.
The cable pre-tight apparatus 10 are made up of feed-through hydraulic pump 10-1, baffle plate 10-2, rigid base 10-3 and anchor head 10-4.
Cable wire defect scanning system coaxial assembly method based on Circle-Array column weak magnetic detection sensor is as follows：Angled seat 6-
1 adjustment system level, Circle-Array column weak magnetic detection sensor 2 is moving to steel cable fixation device mounting rail 8 just by Y-axis guide rail
Top, cable pre-tight apparatus 10 are installed on the both sides of horizontal adjustment base 6, and anchor head 10-4, baffle plate groove 10-2, feed-through hydraulic
Pump 10-1, " returning " shape support 9-2 of steel cable fixation device and Circle-Array column weak magnetic detection sensor 2 are centrally located at straight line
On.Cable wire 16 is stretched to collimating status by cable pre-tight apparatus 10, and steel cable fixation device 9 is adjusted by four fixing bolt 9-3
The locus of cable wire 16 is simultaneously fixedly clamped.
Claims (7)
1. the cable wire defect scanning system of Circle-Array column weak magnetic detection sensor is based on, it is characterised in that including：Line slideway
Formula sweep mechanism, Circle-Array column weak magnetic detection sensor, cable wire clamp assemblies, motion control unit and data acquisition unit；
The Circle-Array column weak magnetic detection sensor is fixedly installed on linear guide rail type sweep mechanism, for measuring cable wire
Magnetic field variation signal；The cable pre-tight apparatus of cable wire clamp assemblies are installed on linear guide rail type sweep mechanism both sides, for pre-
Tight cable wire；The steel cable fixation device of cable wire clamp assemblies is fixedly installed on linear guide rail type sweep mechanism, for fixing tightwire
Position；Motion control unit is connected with linear guide rail type sweep mechanism, for controlling line slideway to drive Circle-Array column weak magnetic
Detection sensor does linear uniform motion with setting speed cable wire relatively to be measured；Data acquisition unit is examined with Circle-Array column weak magnetic
Survey sensor to be connected, for the multichannel magnetic field variation signal that Real-time Collection Circle-Array column weak magnetic detection sensor measurement is obtained.
2. the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor according to claim 1, it is special
Levy and be, the linear guide rail type sweep mechanism includes：Horizontal adjustment base, XY two axle movements guide rail and steel cable fixation device peace
Dress beam；
The horizontal adjustment base is assembled by angled seat and aluminium section bar, and it is used for regulating system level and fixed line slideway；
Three guide rails and two motors that the XY two axle movements guide rail is assembled by I-shaped are constituted；Wherein two closed slides
X kinematic axis is constituted, guide rail normal thereto constitutes Y motion axle；Y-axis guide rail is fixedly installed on two sliding blocks of X-axis guide rail, circle
All array weak magnetic detection sensors are fixedly installed on the sliding block of Y-axis guide rail；Motion control unit is by controlling two spindle motors
Realize that Circle-Array column weak magnetic detection sensor completes set motion in X/Y plane；
The steel cable fixation device mounting rail paralleled by X axis guide rail is fixedly mounted on horizontal adjustment base, for fixedly mounting steel
Rope fixing device.
3. the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor according to claim 1, it is special
Levy and be, the Circle-Array column weak magnetic detection sensor includes：Sensor holder, Helmholtz coil, tunnel magnetoresistive
Probe, Split type magnetic shielding case, printed circuit board；
The sensor holder is fixedly installed on Y-axis guide rail sliding block, and it is used to clamp Split type magnetic shielding case, the fixed last of the twelve Earthly Branches
Mu Huozi coils and rigid printed circuit plate；
The Helmholtz coil is set in split type shielding case two ends and is fixed on the base of sensor holder, and it leads to
Lithium battery power supply is crossed, for uniform magnetization detected steel cable vertically；
The split type shielding case is used to fix tunnel magnetoresistive probe and shielding environmental magnetic field；
The tunnel magnetoresistive probe is made up of tunnel magnetoresistance element and sensor retainer ring；The sensor retainer ring interference fits
In in split type shielding case, its outer wall is uniformly distributed circumferentially N number of groove, and inwall is uniformly distributed N number of and unit with grooves in outer wall position pair
The shallow slot that should and be interconnected；The tunnel magnetoresistance element is uniformly distributed and glue sealing schedules the groove of sensor retainer ring outer wall
It is interior；Wherein 2≤N≤16；
The printed circuit board is made up of rigid printed circuit plate PCB and flexible circuit board FPC；The rigid printed circuit
Plate is installed on the base of sensor holder, and it is used to be powered for tunnel magnetoresistance element and be sent to data acquisition unit to examine
Survey signal；Weld tunnel magnetoresistance element, one end connection rigid printed circuit plate, through sensing in described flexible circuit board one end
Device retainer ring inside and outside wall intercommunicating pore, and glue envelope be protected in the shallow slot of sensor support inwall, it is used to be tunnel magnetoresistance element
Transmit electric energy and export detection signal to rigid printed circuit plate.
4. the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor according to claim 1, it is special
Levy and be, the cable wire clamp assemblies include：Cable pre-tight apparatus and steel cable fixation device；
The cable pre-tight apparatus are used for pretension cable wire, stretching cable wire to collimating status；The steel cable fixation device is used in pairs,
Be made up of base, support and fixing bolt, base is fixedly mounted on steel cable fixation device mounting rail, support by I-shaped and
" returning " character form structure assembles, and four fixing bolts pass through sensing center from " returning " font support four direction respectively, pass through
Locus and be fixedly clamped cable wire of the fixing bolt adjustment from " returning " font carriage center through cable wire.
5. the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor according to claim 3, it is special
Levy and be, the sensor holder, Helmholtz coil, split type shielding case, sensor retainer ring and cable wire are coaxial.
6. the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor according to claim 3, it is special
Levy and be, the sensor holder uses pmma material, the Helmholtz coil to use enamel covered wire material, institute
State Split type magnetic shielding case and use low-carbon steel material, the sensor retainer ring uses pmma material.
7. the cable wire defect scanning system based on Circle-Array column weak magnetic detection sensor according to claim 3, it is special
Levy and be, the internal diameter small 1mm~2mm of the internal diameter than split type magnetic screen shell end cap of the sensor retainer ring compares detected steel cable
Big 1mm~the 2mm of diameter；Its inner surface is uniformly distributed circumferentially N number of deep 0.5mm~1mm, 1mm~2mm wide from sensor support one
End extends to the shallow slot in the middle part of it, and shallow slot is relative with unit with grooves in outer wall position and is interconnected；Wherein 2≤N≤16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521209.2A CN104280452B (en) | 2014-09-30 | 2014-09-30 | Wire rope defect scanning system based on circular array weak magnetic detection sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410521209.2A CN104280452B (en) | 2014-09-30 | 2014-09-30 | Wire rope defect scanning system based on circular array weak magnetic detection sensor |
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| CN104280452A CN104280452A (en) | 2015-01-14 |
| CN104280452B true CN104280452B (en) | 2017-05-24 |
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| CN106124613A (en) * | 2016-07-26 | 2016-11-16 | 北京工业大学 | Elevator wire rope fracture of wire based on radio network technique monitoring system |
| CN106645385A (en) * | 2016-09-23 | 2017-05-10 | 中国石油大学(华东) | Petroleum string defect fast detecting probe based on Helmholtz coils |
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