CN207015352U - Laser sound magnetic rail surface defects fast flaw detection system and inspection car - Google Patents
Laser sound magnetic rail surface defects fast flaw detection system and inspection car Download PDFInfo
- Publication number
- CN207015352U CN207015352U CN201720575508.3U CN201720575508U CN207015352U CN 207015352 U CN207015352 U CN 207015352U CN 201720575508 U CN201720575508 U CN 201720575508U CN 207015352 U CN207015352 U CN 207015352U
- Authority
- CN
- China
- Prior art keywords
- laser
- shear wave
- sound magnetic
- flaw
- flaw detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model embodiment provides a kind of laser sound magnetic rail surface defects fast flaw detection system and inspection car, is related to inspection technique field.The laser sound magnetic rail surface defects fast flaw detection system includes control device and multiple laser sound magnetic flaw detectors, multiple laser sound magnetic flaw detectors are electrically connected with control device, multiple laser sound magnetic flaw detectors are arranged according to default spacing, laser sound magnetic flaw detector includes laser-ultrasound exciting bank, ultrasonic diffraction shear wave reception device and governor motion, laser-ultrasound exciting bank and ultrasonic diffraction shear wave reception device are electrically connected with control device, laser-ultrasound exciting bank is for the pulse laser beam after transmitting focusing to determinand surface, ultrasonic diffraction shear wave reception device is used to receive from ultrasonic diffraction shear wave signal caused by determinand surface, control device judges whether flaw indication according to the amplitude of ultrasonic diffraction shear wave signal, and position corresponding to existing flaw indication is positioned, get defective locations.Flaw detection can quickly be realized.
Description
Technical field
Inspection technique field is the utility model is related to, it is quick in particular to a kind of laser sound magnetic rail surface defects
Fault detection system and inspection car.
Background technology
Railway security is theme eternal in railway transportation, is the necessary condition for ensureing socio-economic development.Nowadays with
The continuous improvement of railway operation speed and loading capacity, easily forms substantial amounts of surface defect on rail tread, and surface defect can be by
Gradually to rail internal extended, the fracture of rail can be caused when serious, endangers traffic safety, so strengthening to easily producing defect
The nondestructive inspection of rail tread is most important.
At present, rail tread defect is detected a flaw both at home and abroad and mainly uses traditional piezoelectric supersonic method.The party is owned by France
Detected a flaw in contact, detection sensitivity is low the defects of to rail tread upper surface and near surface, and by needing during detecting a flaw
To use couplant, require rail tread surface state the limitation of high limitation, it is impossible to realize the fast of rail tread defect
Speed flaw detection, its highest detection speed per hour is only 80km/h, so being difficult to the needs for meeting modern railways development.
Existing inspection technique is traditional ultrasonic detection method mostly, and it has inspection speed, slow, precision is low, can not
Comprehensively the shortcomings of covering.
Utility model content
In view of this, the utility model provides a kind of laser sound magnetic rail surface defects fast flaw detection system and flaw detection
Car, by setting control device and multiple laser sound magnetic flaw detectors, multiple laser sound magnetic flaw detectors are arranged according to default spacing,
Laser sound magnetic flaw detector includes laser-ultrasound exciting bank, ultrasonic diffraction shear wave reception device and governor motion, control device
The amplitude of the signal received according to ultrasonic diffraction shear wave reception device judges whether flaw indication, and obtains defective locations,
The flaw detection for treating flaw detection region can faster and be accurately realized, it is slow and low to improve inspection speed in the prior art
The defects of precision problem.
To achieve the above object, the utility model provides following technical scheme：
A kind of laser sound magnetic rail surface defects fast flaw detection system, the laser sound magnetic rail surface defects fast flaw detection
System includes control device and multiple laser sound magnetic flaw detectors, and the multiple laser sound magnetic flaw detector electrically connects with control device
Connect, the multiple laser sound magnetic flaw detector is arranged according to default spacing, and the laser sound magnetic flaw detector encourages including laser-ultrasound
Device, ultrasonic diffraction shear wave reception device and governor motion, the laser-ultrasound exciting bank and ultrasonic diffraction shear wave connect
Receiving apparatus is electrically connected with control device, and the governor motion is used for the focusing effect for adjusting the laser-ultrasound exciting bank,
And for adjusting the position of ultrasonic diffraction shear wave reception device, the arteries and veins that the laser-ultrasound exciting bank is used for after transmitting focusing
To determinand surface, the ultrasonic diffraction shear wave reception device is used to receive spreads out laser beam from ultrasound caused by determinand surface
Shear wave signal is penetrated, the control device judges whether flaw indication according to the amplitude of the ultrasonic diffraction shear wave signal, and
Position corresponding to the existing flaw indication is positioned, gets defective locations.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the laser-ultrasound exciting bank bag
Pulse laser and line style focusing unit are included, the laser emitting that the line style focusing unit is arranged at the pulse laser leads to
Road, the line style focusing unit are made up of the stand for optical lens of cylindrical lens and adjustable focal length, and the pulse laser is used to send out
Pulse laser beam is penetrated, the line style focusing unit is used to be focused the pulse laser beam.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the governor motion includes first and adjusted
Section mechanism and the second governor motion, first governor motion include the optical bench of line with a scale, the scale of the optical bench
The orientation of line is the direction parallel with the laser emitting passage of pulse laser, and the cylindrical lens passes through the optical frames
Erection is placed in the optical bench, and the cylindrical lens can move in the graduation mark orientation of the optical bench, and pulse laser
The pulse laser beam of device transmitting includes horizontal location bolt, fixed seat, silk by the cylindrical lens, second governor motion
Bar and handwheel, the ultrasonic diffraction shear wave reception device are arranged at the displaceable member of fixed seat, institute by horizontal location bolt
Handwheel and the movable connection of the screw mandrel are stated, the displaceable member and fixture are each perpendicular to the fixed seat, the handwheel
Be connected by screw mandrel with the displaceable member, the displaceable member can relative to the fixture the fixed seat graduation mark
Moved in orientation, the horizontal location bolt is used to adjust the ultrasonic diffraction shear wave reception device relative to the fixation
The distance of seat, the handwheel is used to adjust the ultrasonic diffraction shear wave reception device and the distance of the fixture, to adjust
State the position of the horizontal direction and vertical direction when ultrasonic diffraction shear wave reception device uses.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the ultrasonic diffraction shear wave receives dress
Put including shear wave electromagnetic ultrasonic transducer, high-Speed Data-Acquisition Module and photodetector, the high-Speed Data-Acquisition Module
It is electrically connected with the electromagnetic ultrasonic transducer and photodetector, the shear wave electromagnetic ultrasonic transducer is used to detecting from treating
Ultrasonic diffraction shear wave signal caused by thing surface is surveyed, the photodetector is used to detect the laser-ultrasound exciting bank transmitting
Pulsed laser signal, the high-Speed Data-Acquisition Module be used for gather shear wave electromagnetic ultrasonic transducer and photodetector inspection
The signal of survey, the generation triggering high-Speed Data-Acquisition Module enters line number after the photodetector detects pulsed laser signal
According to collection signal.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the shear wave electromagnetic ultrasonic transducer
Including flaw detection coil, casacade multi-amplifier, filtering wave detector and analog-digital converter, the flaw detection coil, casacade multi-amplifier, filtering
Wave detector and analog-digital converter are sequentially electrically connected with successively, and the flaw detection coil is used for detecting ultrasonic diffraction shear wave signal, institute
State casacade multi-amplifier to be used to be amplified ultrasonic diffraction shear wave signal, the filtering wave detector is used to spread out to the ultrasound after amplification
Penetrate shear wave signal and be filtered detection.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the photodetector includes photosensitive
Resistance and modulator, the photo resistance are electrically connected with the modulator, and the photo resistance is used to detect optical signal simultaneously
Electric signal is converted to, the modulator is used to be modulated electric signal caused by the photo resistance.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the laser sound magnetic flaw detector also wraps
Housing is included, the laser sound magnetic ultrasonic action device is arranged at the side in the housing, and the ultrasonic diffraction shear wave receives dress
Install and be placed in opposite side relative with laser sound magnetic ultrasonic action device in the housing, the governor motion includes first
Governor motion and the second governor motion, first governor motion are arranged at the laser sound magnetic ultrasonic action in the housing
The surface of device side, second governor motion are arranged at the ultrasonic diffraction shear wave reception device institute in the housing
On the surface of side, the photodetector of the ultrasonic diffraction shear wave reception device is arranged at the laser-ultrasound exciting bank
The direction of laser emitting, the high-Speed Data-Acquisition Module are arranged at outside housing.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the control device includes flaw detector
Control module, data analysis module and display module, flaw detector control module, data analysis module and the display module
It is electrically connected with successively, the flaw detector control module is used to control the multiple laser sound magnetic flaw detector synchronous averaging, the number
It is used to carry out calculation process and according to defect amplitude report to the data-signal of each laser sound magnetic flaw detector transmission according to analysis module
Alert threshold value and the position judgment flaw indication of reception signal and its position, the display module are used to receive data analysis module
Information and result of detection is shown.
Preferably, in above-mentioned laser sound magnetic rail surface defects fast flaw detection system, the default space D=V/f, its
In, V is inspection speed, and f is the repetition rate of pulse laser in the laser sound magnetic flaw detector, and l passes for shear wave electromagnetic acoustic
Effective flaw detection length of sensor, D are the default spacing, quantity n >=D/l of the multiple laser sound magnetic flaw detector.
A kind of inspection car, the inspection car include vehicle main body and above-mentioned laser sound magnetic rail surface defects fast flaw detection
System, the laser sound magnetic rail surface defects fast flaw detection system are fixedly installed on the vehicle main body.
The beneficial effect that the utility model is realized：The utility model embodiment provides a kind of laser sound magnet steel track surface and lacked
Fall into fast flaw detection system and inspection car, the laser sound magnetic rail surface defects fast flaw detection system includes control device and multiple
Laser sound magnetic flaw detector, multiple laser sound magnetic flaw detectors are electrically connected with controller.Multiple laser sound magnetic flaw detectors are according to default
Spacing is arranged.Laser sound magnetic flaw detector includes laser-ultrasound exciting bank, ultrasonic diffraction shear wave reception device and governor motion,
Laser-ultrasound exciting bank is used for the pulse laser beam after transmitting focusing to determinand surface, ultrasonic diffraction shear wave reception device
Sentenced in receiving from ultrasonic diffraction shear wave signal caused by determinand surface, control device according to the amplitude of ultrasonic diffraction shear wave signal
It is disconnected to whether there is flaw indication, and get defective locations.The laser sound magnetic rail surface defects fast flaw detection system can be compared with
The flaw detection in flaw detection region is treated in fast and accurate realization, to improve that inspection speed in the prior art is slow and low precision
Defect problem.
Brief description of the drawings
, below will be to embodiment for clearer explanation the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 shows the laser sound magnetic rail surface defects fast flaw detection system that the utility model first embodiment provides
Structural representation；
Fig. 2 shows the structural representation for the laser flaw detection device that the utility model first embodiment provides；
Fig. 3 shows the laser sound magnetic rail surface defects fast flaw detection method that the utility model first embodiment provides
Schematic diagram；
Fig. 4 shows another schematic diagram that the utility model first embodiment provides；
Fig. 5 shows the laser sound magnetic rail surface defects fast flaw detection system that the utility model first embodiment provides
Flaw detection process schematic；
Fig. 6 shows the enlarged drawing for the dotted line frame content that the utility model first embodiment provides；
Fig. 7 shows flaw detection oscillogram when being not present defect that the utility model first embodiment provides；
Fig. 8 shows the flaw detection oscillogram during existing defects that the utility model first embodiment provides；
Fig. 9 shows the laser sound magnetic rail surface defects fast flaw detection system that the utility model first embodiment provides
The flow chart of method of detection；
Figure 10 shows the structural representation for the inspection car that the utility model second embodiment provides.
Icon：100- laser sound magnetic rail surface defects fast flaw detection systems；110- control devices；120- laser sound magnetic spies
Hinder device；130- laser-ultrasound exciting banks；131- pulse lasers；132- line style focusing units；133- laser line sources；140-
Ultrasonic diffraction shear wave reception device；141- shear wave electromagnetic ultrasonic transducers；142- high-Speed Data-Acquisition Modules；143- photoelectricity is visited
Survey device；150- governor motions；The governor motions of 151- first；152- optical bench；The governor motions of 153- second；154- horizontal locations
Bolt；155- fixed seats；156- screw mandrels；157- handwheels；160- ultrasonic surface waves；161- defects；162- back waves；163- is transmitted
Ripple；164- diffraction shear waves；165- laser beams；200- inspection cars；210- vehicle main bodies.
Embodiment
The defects of slow inspection speed and precision be present in existing steel rail flaw detection technology.
In view of the foregoing, utility model people is by long-term research and substantial amounts of practice, there is provided a kind of laser sound magnetic
Rail surface defects fast flaw detection system and inspection car are to improve existing issue.
Below in conjunction with accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear
Chu, it is fully described by, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole realities
Apply example.The detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit claimed sheet below
The scope of utility model, but it is merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, ability
The every other embodiment that field technique personnel are obtained on the premise of creative work is not made, belongs to the utility model
The scope of protection.
First embodiment
The utility model first embodiment provides a kind of laser sound magnetic rail surface defects fast flaw detection system 100, please
Referring to Fig. 1, the laser sound magnetic rail surface defects fast flaw detection system 100 includes control device 110 and multiple laser sound magnetic
Flaw detector 120.Multiple laser sound magnetic flaw detectors 120 are electrically connected with control device 110, and multiple laser sound magnetic flaw detectors 120 are pressed
Arranged according to default spacing.Fig. 2 is referred to, it is horizontal that laser sound magnetic flaw detector 120 includes laser-ultrasound exciting bank 130, ultrasonic diffraction
Wave receiving device 140 and governor motion 150.Laser-ultrasound exciting bank 130 and ultrasonic diffraction shear wave reception device 140 are divided
It is not electrically connected with control device 110.
In the utility model first embodiment, multiple laser sound magnetic flaw detectors 120 can be arranged into according to default spacing
One row.
In the utility model first embodiment, as shown in Fig. 2 laser-ultrasound exciting bank 130 includes pulse laser
131 and line style focusing unit 132.Wherein, line style focusing unit 132 is arranged at the laser emitting passage of pulse laser 131,
Line style focusing unit 132 is made up of the stand for optical lens of cylindrical lens and adjustable focal length.
Further, as shown in Fig. 2 governor motion 150 includes the first governor motion 151 and the second governor motion
153.Wherein, the first governor motion 151 includes the optical bench 152 of line with a scale, and the orientation of the graduation mark of its optical system is
The direction parallel with the laser emitting passage of pulse laser 131.Line style focusing unit 132 is arranged at optical bench 152, specifically
, i.e., cylindrical lens is arranged at optical bench 152 by stand for optical lens, and cylindrical lens can arrange in the graduation mark of optical bench 152
Side moves up, i.e., cylindrical lens can move up and down on vertical direction as shown in Figure 2, and as shown in Fig. 2 pulse
The pulse laser beam that laser 131 is launched can pass through cylindrical lens.Second governor motion 153 includes horizontal location bolt
154th, fixed seat 155, screw mandrel 156 and handwheel 157.Ultrasonic diffraction shear wave reception device 140 is set by horizontal location bolt 154
The displaceable member of fixed seat 155, handwheel 157 and 157 movable connection of screw mandrel are placed in, and handwheel 157 is arranged at fixture surface.
Displaceable member and fixture are vertically installed in fixed seat 155.Fixture is the part for being fixedly installed on fixed seat 155.Hand
Wheel 157 is connected by screw mandrel 156 with displaceable member, and displaceable member can arrange relative to graduation mark of the fixture in fixed seat 155
Side moves up.
As a kind of embodiment, the first governor motion 151 can be oppositely arranged with the second governor motion 153, and pulse swashs
Light device 131 can be arranged at one end of the first governor motion 151, and line style focusing unit 132 is arranged at the first governor motion 151,
The laser emitting mouth of pulse laser 131 is towards line style focusing unit 132, and the pulse laser that pulse laser 131 is emitted
Beam is by the cylindrical lens of line style focusing unit 132, the pulse laser beam and line style focusing unit that pulse laser 131 is emitted
132 is coaxial.Shear wave electromagnetic ultrasonic transducer 141 is arranged at the fixed seat of the first governor motion 151 by horizontal location bolt 154
155, it is horizontal when the bottom surface of shear wave electromagnetic sensor should keep using.Horizontal location bolt 154 is arranged at the removable of fixed seat 155
Moving part, and displaceable member can move in the graduation mark orientation of fixed seat 155, and displaceable member is perpendicular to fixed seat 155
Graduation mark orientation.Displaceable member is connected by screw mandrel 156 with handwheel 157, and handwheel 157 is arranged at the fixation of fixed seat 155
Part, fixture is perpendicular to the graduation mark orientation of fixed seat 155.When rotating handwheel 157, screw mandrel 156 is set to rotate, rotation
Screw mandrel 156 moves up or down according to the rotation direction of handwheel 157 in the graduation mark orientation of fixed seat 155, so that horizontal
Ripple electromagnetic ultrasonic transducer 141 can be relative to fixture in the graduation mark of fixed seat 155 with moving up or down for screw mandrel 157
Moved in orientation.Photodetector 143 is arranged at the direction of the laser emitting of pulse laser 131, and photodetector
143 can receive laser signal.High-Speed Data-Acquisition Module 142 and photodetector 143 and shear wave electromagnetic ultrasonic transducer
141 are electrically connected with, and high-Speed Data-Acquisition Module 142 is also electrically connected with control device 110.
In the utility model first embodiment, as shown in Fig. 2 ultrasonic diffraction shear wave reception device 140 includes shear wave electricity
Magnetic sonac 141, high-Speed Data-Acquisition Module 142 and photodetector 143.Wherein, high-Speed Data-Acquisition Module 142
It is electrically connected with electromagnetic ultrasonic transducer and photodetector 143.
Further, shear wave electromagnetic ultrasonic transducer 141 include flaw detection coil, casacade multi-amplifier, filtering wave detector and
Analog-digital converter.Flaw detection coil, casacade multi-amplifier, filtering wave detector and analog-digital converter are sequentially electrically connected with successively.
In the utility model first embodiment, as shown in Fig. 2 laser sound magnetic flaw detector 120 also includes housing.Laser
Sound magnetic ultrasonic action device is arranged at the side in housing, and ultrasonic diffraction shear wave reception device 140 is arranged in housing and laser
The relative opposite side of sound magnetic ultrasonic action device.First governor motion 151 of governor motion 150 is arranged at laser sound magnetic ultrasound and swashed
Encourage the surface of device side.Second governor motion 153 of governor motion 150 is arranged at ultrasonic diffraction shear wave in housing and received
The surface of the side of device 140.The photodetector 143 of ultrasonic diffraction shear wave reception device 140 is arranged at laser-ultrasound and swashed
The direction of the laser emitting of device 130 is encouraged, high-Speed Data-Acquisition Module 142 is arranged at outside housing.
In the utility model first embodiment, control device 110 include flaw detector control module, data analysis module,
And display module.Flaw detector control module, data analysis module and display module are electrically connected with successively.
In the utility model first embodiment, the inspection speed of single laser sound magnetic flaw detector 120 is V=f*l, multiple
Default spacing between laser sound magnetic flaw detector 120 is D=V/f, wherein, f is pulse laser in laser sound magnetic flaw detector 120
131 repetition rate, l are effective flaw detection length of transversal wave ultrasonic sensor, and D is default spacing.Multiple laser sound magnetic flaw detectors
120 quantity n >=D/l.
In the utility model embodiment, laser-ultrasound exciting bank 130 be used for transmitting focusing after pulse laser beam extremely
Determinand surface；Ultrasonic diffraction shear wave reception device 140 is used to receive from ultrasonic diffraction shear wave signal caused by determinand surface；
Governor motion 150 is used for the arousal effect for adjusting laser-ultrasound exciting bank 130, and is received for adjusting ultrasonic diffraction shear wave
The position of device 140；Control device 110 is used to control laser-ultrasound exciting bank 130 and ultrasonic diffraction shear wave reception device
140, and flaw indication is judged whether according to the amplitude of ultrasonic diffraction shear wave signal, and position corresponding to flaw indication is entered
Row positioning, gets defective locations.
The pulse laser 131 of laser-ultrasound exciting bank 130 is used for emission pulse laser beam, pulse laser 131
Repetition rate is 1-100Hz, and the pulsed laser energy of transmitting is in 1-480mJ；Line style focusing unit 132 is used for pulse laser beam
It is focused.The pulse laser beam that pulse laser 131 is launched can be focused into line source by line style focusing unit 132 and laterally shine
Determinand surface is mapped to, for encouraging ultrasonic surface wave.Line style focusing unit 132 includes cylindrical lens, and cylindrical lens makes to gather
Defocused line source length and wide respectively 5mm and 0.5mm.Encouraging ultrasonic surface wave bandwidth, Main beam can be between 0.5-4MHz
Propagated with certain half-angle of spread along determinand surface longitudinal, after certain distance is propagated, its Main beam can horizontal all standing
Whole determinand surface.
In the utility model embodiment, governor motion 150 includes the first Tiao Ji mechanisms and the second governor motion
153.Wherein, being arranged at the cylindrical lens of the optical bench 152 of the first governor motion 151 can arrange in the graduation mark of optical bench 152
Column direction moves, and so as to change the distance of the range pulse laser 131 of line style focusing unit 132, carries out pulse laser
131 with the coaxial adjustment of cylindrical lens, realize the regulation of the focusing effect of laser-ultrasound exciting bank 130.Horizontal location bolt
154 are used to adjust distance of the ultrasonic diffraction shear wave reception device 140 relative to fixed seat 155, and handwheel 157 is used to adjust ultrasound
Diffraction shear wave reception device 140 and the distance of fixture, to adjust level side when ultrasonic diffraction shear wave reception device 140 uses
To the position with vertical direction, ensure that ultrasonic diffraction shear wave reception device 140 keeps certain spacing with thing surface to be detected.
Ultrasonic diffraction shear wave reception device 140 includes shear wave electromagnetic ultrasonic transducer 141, high-Speed Data-Acquisition Module
142 and photodetector 143.Wherein, shear wave electromagnetic ultrasonic transducer 141 is used to detect from ultrasonic caused by determinand surface
Diffraction shear wave signal；Photodetector 143 is used for the pulsed laser signal for detecting the transmitting of laser-ultrasound exciting bank 130；At a high speed
Data acquisition module 142 is used to gather the signal that shear wave electromagnetic ultrasonic transducer 141 and photodetector 143 detect, photoelectricity
Detector 143 produces the signal that triggering high-Speed Data-Acquisition Module 142 carries out the collection of data after detecting pulsed laser signal.
Shear wave electromagnetic ultrasonic transducer 141 is by flaw detection coil, casacade multi-amplifier, filtering wave detector and analog-digital converter group
Into.Shear wave electromagnetic ultrasonic transducer 141 can receive the ultrasonic diffraction shear wave under certain distance.Wherein, flaw detection first goes to be used to visit
Survey ultrasonic diffraction shear wave signal；Casacade multi-amplifier is used to be amplified ultrasonic diffraction shear wave signal；Filter wave detector be used for pair
Ultrasonic diffraction shear wave signal after amplification is filtered detection.Coil of detecting a flaw is used for ultrasonic diffraction shear wave high sensitivity
PCB butterfly shaped coilses, its effective inspected area are length of side 100mm square area.
Certainly, shear wave electromagnetic ultrasonic transducer 141 can also include sensor outer housing, shear wave electromagnetic ultrasonic transducer 141
Other assemblies be arranged in sensor outer housing.The shell of shear wave electromagnetic ultrasonic transducer 141 is used to shield the electricity during flaw detection
Magnetic disturbance, and shear wave electromagnetic ultrasonic transducer 141 is protected.
In the utility model embodiment, photodetector 143 is made up of highly sensitive photo resistance and modulator,
Photo resistance is used to detect optical signal and is converted to electric signal, and modulator is used to adjust electric signal caused by photo resistance
System.High sensitivity photo resistance may detect the faint optical signal of determinand surface scattering, and modulator fills with laser-ultrasound excitation
Put 130 optical signal features to match, can be that the offer of high-Speed Data-Acquisition Module 142 responds the small triggering of fast, high gain, noise
Signal.
In the utility model embodiment, high-Speed Data-Acquisition Module 142 can be based on Altera StratixII FPGA
Realized with Atme ARM9 frameworks.Its maximum sampling rate can reach 100MSPS, it is possible to achieve signal under high-speed motion state
Collection.
In the utility model embodiment, control device 110 is by flaw detector control module, data analysis module and display
Module forms.Wherein, flaw detector control module is used to control multiple synchronous averagings of laser sound magnetic flaw detector 120；Data analysis mould
Block is used to carry out calculation process to the data-signal of each laser sound magnetic flaw detector 120 transmission, and according to defect amplitude warning level
It is worth and receives position judgment flaw indication and its position of signal；Display module is for receiving the information of data analysis module simultaneously
Result of detection is shown.Flaw detector control module can be based on FPGA and realize, can control each laser sound magnetic flaw detector
120 pulse laser emission time.Data analysis module can be the processor for including memory cell and arithmetic element, and it is deposited
Storage unit is used to receiving and storing the flaw detection data signal that all laser sound magnetic flaw detectors 120 transmit, and arithmetic element passes through each
The flaw detection data signal that laser sound magnetic flaw detector 120 transmits carries out high-speed computation processing and according to signal location and defect amplitude
Alarm threshold value has carried out flawless judgement.Display module can be LED display, for real-time display result of detection, certainly
Its specific species is not intended as limiting in the utility model embodiment.
If Fig. 3 is the method for detection general principle figure of laser sound magnetic flaw detector 120.Sent by pulse laser 131 a branch of
When being irradiated to by the laser beam 165 of line focus on rail tread, rail tread can absorb portion of energy and transient heat work occurs
With strain and stress field is produced, the particle of rail tread is set to produce vibration, so as to produce various types of ultrasonic waves in rail,
What it is wherein along rail tread propagation is ultrasonic surface wave 160；When running into defect 161 along tread propagation surface wave, except producing
Outside back wave 162 and transmitted wave 163, the diffraction shear wave 164 propagated to surrounding can be also produced, now shear wave electromagnetic ultrasonic transducer
141 above defect when can receive the diffraction shear wave 164.As shown in figure 4, it is irradiated to the laser line source 133 of rail tread
Motivating Main beam has the surface wave of certain directive property with half-angle of spread θ along rail tread longitudinal propagation, when laser line source 133
Length be 5mm, width is when being 0.5mm, experiment can obtain surface wave when the distance propagated on P60 rail treads reaches 85mm
Whole tread region can be transversely diffused into, i.e., in flaw detection, when shear wave electromagnetic ultrasonic transducer 141 and laser line source 133
Spacing can carry out all standing flaw detection when being more than 85mm to rail tread, while in view of the attenuation characteristic of ultrasonic surface wave,
The spacing of shear wave electromagnetic ultrasonic transducer 141 and laser line source 133 also should not be too big, is typically chosen between 90mm~100mm
Spacing.
In the laser sound magnetic rail surface defects fast flaw detection system 100, the flaw detection speed of single laser sound magnetic flaw detector 120
Spend the repetition rate f and ultrasonic diffraction shear wave reception device 140 by pulse laser 131 in laser-ultrasound exciting bank 130
Effective flaw detection length l of middle shear wave electromagnetic ultrasonic transducer 141 is multiplied to obtain, i.e.,.When f is 100Hz, and l is 100mm, calculate
The inspection speed that can obtain single laser sound magnetic flaw detector 120 is 36km/h.To reach inspection speed 100km/h-200km/h,
Need to arrange multiple laser sound magnetic flaw detectors 120 according to default spacing.Wherein, space D and laser sound magnetic flaw detector are preset
120 quantity n can be according to：D=V/f and n >=D/l is calculated.
As a preferred embodiment, when n numerical value determines, processing, D can be optimized to default space D
D is expressed as after optimization processing1, D1Can be according to： D-(nl-D)≤D1≤ D is calculated.
In the utility model embodiment, the quantity of laser sound magnetic flaw detector 120 can take： 3≤n≤6.
Further, for ease of the assembling and regulation of laser sound magnetic rail surface defects fast flaw detection system 100, after optimization
The numerical value of default spacing can be with round numbers.
So as to the quantity of the laser sound magnetic flaw detector 120 of laser sound magnetic rail surface defects fast flaw detection system 100
And default spacing assembling laser sound magnetic rail surface defects fast flaw detection system 100.Lacked in assembling laser sound magnet steel track surface
When falling into the laser-ultrasound exciting bank 130 of fast flaw detection system 100, according to the focal length of the central column face lens of line style focusing unit 132,
It is the focal length in the distance with adjustment line style focusing unit 132 to rail tread on graduated optical bench 152, focuses on line style
The focus of unit 132 just falls on rail tread；Then using the laser beam of laser transmitting as reference, line style is adjusted again and is gathered
The position of burnt unit 132, focus on line style while it is the focal length to ensure line style focusing unit 132 to the distance of rail tread
Unit 132 is coaxial with pulse laser beam, and the laser line source 133 after being focused on so as to laser beam meridional type focusing unit 132 all shines
It is mapped on determinand surface.
When assembling the ultrasonic diffraction shear wave reception device 140 of laser sound magnetic rail surface defects fast flaw detection system 100,
Horizontal location bolt 154 in ultrasonic diffraction shear wave reception device 140 is adjusted, makes the bottom surface of shear wave electromagnetic ultrasonic transducer 141 and steel
Rail tread is parallel, then moves screw mandrel 156 by rotation hand wheel 157, with adjustment shear wave electromagnetism in graduated fixed seat 155
The bottom surface of sonac 141 and the spacing of rail tread, by adjusting ultrasonic diffraction shear wave reception device 140, to ensure shear wave
The bottom surface of electromagnetic ultrasonic transducer 141 keeps 3~5mm spacing with rail tread, realizes non-contact flaw detection.
Exemplified by realizing inspection speed 150km/h, calculated according to D=V/f and n >=D/l, D=can be obtained
416.67mm, n >=4.16, because the quantity of laser sound magnetic flaw detector 120 is only integer, laser sound magnetic flaw detector 120 counts
Measure n selections and meet flaw detection requirement and the smallest positive integral 5 more than or equal to 4.16.
As it is above-mentioned meet that inspection speed V is 150km/h when a kind of laser sound magnetic rail surface defects fast flaw detection system
The prioritization scheme of system and method, as n=5, for the ease of the assembling and regulation of rail tread laser sound magnetic high speed failure detector,
Processing is optimized to default spacing by optimization formula, D is can be calculated by optimizing formula1Scope be： 395.84mm≤D1
≤ 416.67mm, i.e., default space D1The requirement that inspection speed V is 150km/h, the present embodiment can be met within the above range
Middle D1Numerical value selection be integer 400mm.
As shown in figure 5, a, b, c, d, e are 5 laser sound magnetic flaw detectors 120, array pitch is D1.In time t, (t is
Any instant when being detected a flaw with 150km/h), laser sound magnetic rail surface defects fast flaw detection system is with 150km/h speed pair
Area to be detected a flaw shown in Fig. 5 is detected a flaw, and in a transmit cycle T of pulse laser 131 (T=1/f=0.01s), is advanced
D=416.67mm, t+T moment place is reached, now region progress of the laser sound magnetic flaw detector 120a to l length in D length
Effectively flaw detection.
Array continues to detect a flaw with 150km/h speed, and at the t+2T moment, laser sound magnetic flaw detector 120b is in D length
The region of l length effectively detected a flaw, laser sound magnetic flaw detector 120b institute exploratory areas domain some and t+T moment array a institutes
Visit area coincidence, the length l of overlapping region1D is subtracted for D1, i.e. l1=D-D1=16.67mm, now laser sound magnetic flaw detector
Effectively detected a flaw in the region of l length of the 120a in the latter D length.
Array continues to detect a flaw with 150km/h speed, and at the t+3T moment, laser sound magnetic flaw detector 120c is in D length
The region of l length effectively detected a flaw, laser sound magnetic flaw detector 120c institute exploratory areas domain some and t+T moment laser sound magnetic
Flaw detector 120b visits area coincidence, the length l of overlapping region1D is subtracted for D1, i.e. l1=D-D1=16.67mm, now laser
Effectively detected a flaw in the region of l length of the sound magnetic flaw detector 120b in the latter D length.
It is same at t+4T, t+5T moment, laser sound magnetic flaw detector 120d, e are respectively to the region of the l length in D length
Effectively detected a flaw, also have l between them1The overlapping region of length.
As shown in Figure 5 and Figure 6, during the flaw detection of 5T times, 5 laser sound magnetic flaw detectors 120 have coincidence flaw detection area
Domain, flaw detection region is overlapped so removing, 5 laser sound magnetic flaw detectors 120 have carried out l, (l-l respectively1)、(l-l1)、(l-l1)、
(l-2l1) length effective flaw detection, they it is added together i.e. l+ (l-l1)+(l-l1)+(l-l1)+(l-2l1), calculating can
It is 416.67mm, exactly D numerical value to obtain length of always detecting a flaw, and illustrates 5 laser sound magnetic flaw detectors 120 within the 5T flaw detection time
All standing flaw detection has been carried out to rail tread.When at the t+6T moment, 5 laser sound magnetic flaw detectors 120 are to the steel of 2D length
Rail tread has carried out all standing flaw detection.
In the utility model embodiment, there is coincidence flaw detection region when being detected a flaw, the coverage rate R of repeating to detect a flaw can be by
According to formula：R=(l1/ l) * 100%=16.7% calculating.Therefore, when D is arranged to D1When, in use.State array and carry out rail
Thread defect can not only carry out rail tread all standing flaw detection when detecting a flaw, but also have 16.7% repetition flaw detection coverage rate,
It reduce further defect loss.
The a certain flaw detection of laser sound magnetic flaw detector 120 oscillogram during rail tread zero defect is illustrated in figure 7, Fig. 8 is rail
The a certain flaw detection of laser sound magnetic flaw detector 120 oscillogram, laser line source 133 and shear wave electromagnetic ultrasonic transducer when tread is defective
141 centre distances are S1, as shown in fig. 7, A is trigger signal (equivalent to the flaw detection beginning ripple in conventional piezoelectric ultrasound) in figure, when
During rail tread zero defect, in S1Opening position laser sound magnetic flaw detector 120 can only receive due to rail tread electrical noise believe
Number N, the signal amplitude is smaller, does not influence flaw detection effect；As shown in figure 8, when rail tread is defective, in S1Opening position
Laser sound magnetic flaw detector 120 can receive flaw indication F, and the signal amplitude is significantly greater than electrical noise signals N, if F width
When value exceedes the defects of setting amplitude alarm threshold value, then it is judged as flaw indication.When existing defects, control device 110 can
To pass through the initial position L that detects a flaw1, receive the time t of flaw indication1, inspection speed V, the laser sound magnetic for receiving flaw indication
The numbering n ' of flaw detector 120, default space D1Defective locations L on rail is positioned, ranging formula is：L=L1+V*t1+D1*
(n'-1)。
The utility model first embodiment provides a kind of laser sound magnetic rail surface defects fast flaw detection system 100, should
Laser sound magnetic rail surface defects fast flaw detection system 100 includes control device 110 and multiple laser sound magnetic flaw detectors
120, multiple laser sound magnetic flaw detectors 120 are electrically connected with control device 110, and multiple laser sound magnetic flaw detectors 120 are according to default
Spacing is arranged.During flaw detection, laser sound magnetic rail surface defects fast flaw detection system 100 is installed on inspection car, control dress
Put each laser sound magnetic flaw detector 120 of 110 controls to detect a flaw to determinand, control device 110 is again to the processing of flaw detection data row
Analysis, obtain the result of detection in the flaw detection region of each flaw detector, then the result of detection knot by the flaw detection region of multiple flaw detectors
It is combined together, so as to realize all standing of determinand, quick and high-precision flaw detection effect.
The utility model first embodiment additionally provides the spy of corresponding laser sound magnetic rail surface defects fast flaw detection system
Hinder method, the method for detection includes：
Step S10：Material object is detected a flaw in advance using the laser sound magnetic rail surface defects fast flaw detection system, obtained
To pre- result of detection.
Specifically, step S10 includes：
The control device controls the pulse laser beam after the laser-ultrasound exciting bank transmitting focusing to surface in kind；
The ultrasonic diffraction shear wave reception device receives ultrasonic diffraction shear wave signal and transmitted to the control device；The control device
Judge whether the ultrasonic diffraction shear wave signal is flaw indication, and pass through the initial position L that detects a flaw1, receive flaw indication
Time t1, inspection speed V, laser sound magnetic flaw detector numbering n ', the array pitch D for receiving flaw indication1To defective bit on rail
Put L to be positioned, ranging formula is：L=L1+V*t1+D1*(n'-1)。
Before pulse laser beam to surface in kind after laser-ultrasound exciting bank transmitting focusing, also include：According to
Inspection speed, the quantity of laser sound magnetic flaw detector and default spacing are calculated according to D=V/f and n >=D/l；According to laser sound
The quantity of magnetic flaw detector and default spacing assemble to laser-ultrasound exciting bank.
When assembling the laser-ultrasound exciting bank of laser sound magnetic rail surface defects fast flaw detection system, gathered according to line style
The focal length f of burnt unit central column face lens1, with adjustment line style focusing unit on graduated optical bench to the distance of rail tread
For f1, the focus of line style focusing unit is just fallen on rail tread；Then using the laser beam of laser transmitting as reference, then
The position of secondary regulation line style focusing unit, it is f in the distance of guarantee line style focusing unit to rail tread1While gather line style
Burnt unit is coaxial with laser beam, the laser line source full illumination after being focused on so as to laser beam meridional type focusing unit to determinand table
On face.
When assembling the ultrasonic diffraction shear wave reception device of laser sound magnetic rail surface defects fast flaw detection system, regulation is super
Horizontal location bolt in sound diffraction shear wave reception device, make shear wave electromagnetic ultrasonic transducer bottom surface parallel with rail tread, then lead to
Crossing rotation hand wheel moves screw mandrel, with adjustment shear wave electromagnetic ultrasonic transducer bottom surface and rail tread in graduated fixed seat
Spacing, by adjusting ultrasonic diffraction shear wave reception device, to ensure that shear wave electromagnetic ultrasonic transducer bottom surface and rail tread are protected
3~5mm spacing is held, realizes non-contact flaw detection.
Behind pulse laser beam to surface in kind after laser-ultrasound exciting bank transmitting focusing, pulse laser is on surface in kind
Motivate ultrasonic surface wave.When surface in kind is defective, it may occur that waveform conversion produces ultrasonic diffraction shear wave signal, and is surpassed
Sound diffraction shear wave reception device is transmitted to control device after receiving and carries out Treatment Analysis.Control device is according to the amplitude thresholds of setting
Flaw indication is determined whether there is, and according to flaw detection initial position L1, receive the time t of flaw indication1, inspection speed V, connect
Receive laser sound magnetic flaw detector numbering n ', the array pitch D of flaw indication1Defective locations L on rail is positioned, positioning is public
Formula is：L=L1+V*t1+D1*(n'-1)。
Step S20：According to the pre- result of detection adjustment parameters, make the laser sound magnetic rail surface defects quick
Fault detection system meets that flaw detection requires.
According to pre- result of detection, and the defects of known to material object, the accuracy of pre- result of detection can be analyzed.According to standard
The assessment of true property, then the parameters of laser sound magnetic rail surface defects fast flaw detection system are adjusted, for example, to each
The laser-ultrasound exciting bank and ultrasonic diffraction shear wave reception device of laser sound magnetic flaw detector are adjusted, and default spacing is entered
Row regulation etc..
Step S30：The laser sound magnetic rail surface defects fast flaw detection system adjusted is fixed on inspection car, it is right
Material object to be detected is detected a flaw, and gets flaw detection data.
Generally rail tread is being detected a flaw, it is necessary to using large-scale rail-defect detector car.Therefore need laser sound magnet steel
Track surface defect fast flaw detection system is fixed on inspection car, as inspection car travels, carries out flaw detection scanning to actual determinand, sweeps
Control device real-time display and flaw detection data is stored during looking into.
Certainly, after laser sound magnetic rail surface defects fast flaw detection system is to actual rail examination to be measured, Ke Yigen
The subsequent treatment such as checked having detected rail, repaired according to result of detection.
Second embodiment
The utility model second embodiment provides a kind of inspection car, as shown in Figure 10, the inspection car include vehicle main body with
And the laser sound magnetic rail surface defects fast flaw detection system that the utility model first embodiment provides.Laser sound magnet steel track surface
Defect fast flaw detection system is fixedly installed on vehicle main body.
In summary, the utility model embodiment provide a kind of laser sound magnetic rail surface defects fast flaw detection system and
Inspection car, the laser sound magnetic rail surface defects fast flaw detection system include control device and multiple laser sound magnetic flaw detectors,
Multiple laser sound magnetic flaw detectors are electrically connected with controller.Multiple laser sound magnetic flaw detectors are arranged according to default spacing.Laser sound
Magnetic flaw detector includes laser-ultrasound exciting bank, ultrasonic diffraction shear wave reception device and governor motion, laser-ultrasound excitation dress
To determinand surface, ultrasonic diffraction shear wave reception device is used to receive from determinand pulse laser beam after putting for transmitting focusing
Ultrasonic diffraction shear wave signal caused by surface, control device judge whether defect according to the amplitude of ultrasonic diffraction shear wave signal
Signal, and get defective locations.The result of detection in the flaw detection region to each laser sound magnetic flaw detector is combined, and can be obtained
To the result of detection of determinand whole region.The laser sound magnetic rail surface defects fast flaw detection system hinders skill with laser sound magnetic spy
Art is core, and breaching conventional piezoelectric ultrasonic inspection needs the limitation of couplant, and it is non-contact quick to fully achieve rail tread
Flaw detection, inspection speed is up to 100km/h~200km/h.The utility model laser sound magnetic rail surface defects fast flaw detection system
And the array apparatus that method is made up of multiple flaw detection arrays according to certain spacing, installation and debugging are convenient, reliable, flaw detection effect
Rate is high, defect location is accurate, practical, the defects of can effectively detecting rail tread, and it is fast to realize rail tread defect
Speed, high accuracy, all standing flaw detection, meet the fast-developing demand of steel rail flaw detection technology, and prospect of the application is wide.
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, above in conjunction with the utility model
Accompanying drawing in embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of of the present utility model embodiment of the above to providing in the accompanying drawings is not intended to limit requirement
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship be based on orientation shown in the drawings or position relationship, or
The utility model product using when the orientation usually put or position relationship, be for only for ease of description the utility model and letter
Change description, rather than instruction or imply signified device or element must have specific orientation, with specific azimuth configuration and
Operation, therefore it is not intended that to limitation of the present utility model.In addition, term " first ", " second ", " the 3rd " etc. are only used for area
Divide description, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through
It is indirectly connected, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
Claims (10)
1. a kind of laser sound magnetic rail surface defects fast flaw detection system, it is characterised in that the laser sound magnet steel track surface lacks
Falling into fast flaw detection system includes control device and multiple laser sound magnetic flaw detectors, the multiple laser sound magnetic flaw detector and control
Device is electrically connected with, and the multiple laser sound magnetic flaw detector is arranged according to default spacing, and the laser sound magnetic flaw detector includes swashing
Light ultrasonic action device, ultrasonic diffraction shear wave reception device and governor motion, the laser-ultrasound exciting bank and ultrasound
Diffraction shear wave reception device is electrically connected with control device, and the governor motion is used to adjust the laser-ultrasound exciting bank
Focusing effect, and for adjusting the position of ultrasonic diffraction shear wave reception device, the laser-ultrasound exciting bank is used to launch
To determinand surface, the ultrasonic diffraction shear wave reception device is used to receive produces pulse laser beam after focusing from determinand surface
Raw ultrasonic diffraction shear wave signal, the control device judge whether to lack according to the amplitude of the ultrasonic diffraction shear wave signal
Signal is fallen into, and position corresponding to the existing flaw indication is positioned, gets defective locations.
2. laser sound magnetic rail surface defects fast flaw detection system according to claim 1, it is characterised in that the laser
Ultrasonic action device includes pulse laser and line style focusing unit, and the line style focusing unit is arranged at the pulse laser
The laser emitting passage of device, the line style focusing unit are made up of the stand for optical lens of cylindrical lens and adjustable focal length, the arteries and veins
Rush laser and be used for emission pulse laser beam, the line style focusing unit is used to be focused the pulse laser beam.
3. laser sound magnetic rail surface defects fast flaw detection system according to claim 2, it is characterised in that the regulation
Mechanism includes the first governor motion and the second governor motion, and first governor motion includes the optical bench of line with a scale, institute
The orientation for stating the graduation mark of optical bench is the direction parallel with the laser emitting passage of pulse laser, the cylindrical lens
The optical bench is arranged at by the stand for optical lens, the cylindrical lens can move in the graduation mark orientation of the optical bench
It is dynamic, and the pulse laser beam of pulse laser transmitting includes horizontal location by the cylindrical lens, second governor motion
Bolt, fixed seat, screw mandrel and handwheel, the ultrasonic diffraction shear wave reception device are arranged at fixed seat by horizontal location bolt
Displaceable member, the handwheel and the movable connection of the screw mandrel, the displaceable member and fixture are each perpendicular to described solid
Reservation, the handwheel are connected by screw mandrel with the displaceable member, and the displaceable member can be relative to the fixture described
Moved in the graduation mark orientation of fixed seat, the horizontal location bolt is used to adjust the ultrasonic diffraction shear wave reception device
Relative to the distance of the fixed seat, the handwheel is used to adjust the ultrasonic diffraction shear wave reception device and the fixture
Distance, to adjust the position of horizontal direction and vertical direction when the ultrasonic diffraction shear wave reception device uses.
4. laser sound magnetic rail surface defects fast flaw detection system according to claim 1, it is characterised in that the ultrasound
Diffraction shear wave reception device includes shear wave electromagnetic ultrasonic transducer, high-Speed Data-Acquisition Module and photodetector, the height
Fast data acquisition module is electrically connected with the electromagnetic ultrasonic transducer and photodetector, the shear wave electromagnetic acoustic sensing
Device is used to detect and surpassed from ultrasonic diffraction shear wave signal caused by determinand surface, the photodetector for detecting the laser
Acoustically-driven device transmitting pulsed laser signal, the high-Speed Data-Acquisition Module be used for gather shear wave electromagnetic ultrasonic transducer with
And the signal of photodetector detection, the photodetector produce the triggering high-speed data after detecting pulsed laser signal
Acquisition module carries out the signal of the collection of data.
5. laser sound magnetic rail surface defects fast flaw detection system according to claim 4, it is characterised in that the shear wave
Electromagnetic ultrasonic transducer includes flaw detection coil, casacade multi-amplifier, filters wave detector and analog-digital converter, the flaw detection coil,
Casacade multi-amplifier, filtering wave detector and analog-digital converter are sequentially electrically connected with successively, and the flaw detection coil is used for detecting ultrasonic
Diffraction shear wave signal, the casacade multi-amplifier are used to be amplified ultrasonic diffraction shear wave signal, and the filtering wave detector is used for
Detection is filtered to the ultrasonic diffraction shear wave signal after amplification.
6. laser sound magnetic rail surface defects fast flaw detection system according to claim 4, it is characterised in that the photoelectricity
Detector includes photo resistance and modulator, and the photo resistance is electrically connected with the modulator, and the photo resistance is used
In detection optical signal and electric signal is converted to, the modulator is used to be modulated electric signal caused by the photo resistance.
7. laser sound magnetic rail surface defects fast flaw detection system according to claim 4, it is characterised in that the laser
Sound magnetic flaw detector also includes housing, and the laser sound magnetic ultrasonic action device is arranged at the side in the housing, the ultrasound
Diffraction shear wave reception device is arranged at opposite side relative with laser sound magnetic ultrasonic action device in the housing, the tune
Section mechanism includes the first governor motion and the second governor motion, and first governor motion is arranged at described sharp in the housing
The surface of device side is motivated by ultrasound in optoacoustic magnetic, and second governor motion is arranged at the ultrasonic diffraction in the housing
The surface of shear wave reception device side, the photodetector of the ultrasonic diffraction shear wave reception device are arranged at the laser
The direction of the laser emitting of device is motivated by ultrasound, the high-Speed Data-Acquisition Module is arranged at outside housing.
8. laser sound magnetic rail surface defects fast flaw detection system according to claim 1, it is characterised in that the control
Device includes flaw detector control module, data analysis module and display module, the flaw detector control module, data analysis mould
Block and display module are electrically connected with successively, and the flaw detector control module is used to control the multiple laser sound magnetic flaw detector same
Step starts, and the data analysis module is used to carry out calculation process and root to the data-signal of each laser sound magnetic flaw detector transmission
According to defect amplitude alarm threshold value and the position judgment flaw indication of reception signal and its position, the display module is used to receive
The information of data analysis module is simultaneously shown to result of detection.
9. laser sound magnetic rail surface defects fast flaw detection system according to claim 1, it is characterised in that described default
Space D=V/f, wherein, V is inspection speed, and f is the repetition rate of pulse laser in the laser sound magnetic flaw detector, and l is horizontal stroke
Effective flaw detection length of ripple electromagnetic ultrasonic transducer, D are the default spacing, the quantity n of the multiple laser sound magnetic flaw detector
≥D/l。
10. a kind of inspection car, it is characterised in that the inspection car includes vehicle main body and as described in claim any one of 1-9
Laser sound magnetic rail surface defects fast flaw detection system, the laser sound magnetic rail surface defects fast flaw detection system fixes and sets
It is placed in the vehicle main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720575508.3U CN207015352U (en) | 2017-05-23 | 2017-05-23 | Laser sound magnetic rail surface defects fast flaw detection system and inspection car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720575508.3U CN207015352U (en) | 2017-05-23 | 2017-05-23 | Laser sound magnetic rail surface defects fast flaw detection system and inspection car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207015352U true CN207015352U (en) | 2018-02-16 |
Family
ID=61476359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720575508.3U Withdrawn - After Issue CN207015352U (en) | 2017-05-23 | 2017-05-23 | Laser sound magnetic rail surface defects fast flaw detection system and inspection car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207015352U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994984A (en) * | 2017-05-23 | 2017-08-01 | 山东省科学院激光研究所 | Laser sound magnetic rail surface defects fast flaw detection system and method |
| CN110907363A (en) * | 2018-09-17 | 2020-03-24 | 常州悦阡物联网科技有限公司 | Laser-ultrasound-based crack detection system and detection method for high-speed rail contact line |
| CN111089738A (en) * | 2019-12-31 | 2020-05-01 | 南京工大桥隧与轨道交通研究院有限公司 | Wheel-rail matching state identification method based on noise signals |
| CN111121255A (en) * | 2019-12-18 | 2020-05-08 | 袁文硕 | Classroom environment control system |
| CN113447572A (en) * | 2021-09-01 | 2021-09-28 | 深圳市信润富联数字科技有限公司 | Steel rail flaw detection method, electronic device, steel rail flaw detection vehicle and readable storage medium |
-
2017
- 2017-05-23 CN CN201720575508.3U patent/CN207015352U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994984A (en) * | 2017-05-23 | 2017-08-01 | 山东省科学院激光研究所 | Laser sound magnetic rail surface defects fast flaw detection system and method |
| CN106994984B (en) * | 2017-05-23 | 2023-09-01 | 山东省科学院激光研究所 | Laser acousto-magnetic steel rail surface defect rapid flaw detection system and method |
| CN110907363A (en) * | 2018-09-17 | 2020-03-24 | 常州悦阡物联网科技有限公司 | Laser-ultrasound-based crack detection system and detection method for high-speed rail contact line |
| CN110907363B (en) * | 2018-09-17 | 2022-08-02 | 常州天策电子科技有限公司 | Laser-ultrasound-based crack detection system and detection method for high-speed rail contact line |
| CN111121255A (en) * | 2019-12-18 | 2020-05-08 | 袁文硕 | Classroom environment control system |
| CN111121255B (en) * | 2019-12-18 | 2021-04-13 | 袁文硕 | Classroom environment control system |
| CN111089738A (en) * | 2019-12-31 | 2020-05-01 | 南京工大桥隧与轨道交通研究院有限公司 | Wheel-rail matching state identification method based on noise signals |
| CN113447572A (en) * | 2021-09-01 | 2021-09-28 | 深圳市信润富联数字科技有限公司 | Steel rail flaw detection method, electronic device, steel rail flaw detection vehicle and readable storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207015352U (en) | Laser sound magnetic rail surface defects fast flaw detection system and inspection car | |
| CN106994984A (en) | Laser sound magnetic rail surface defects fast flaw detection system and method | |
| CN102062678B (en) | Measuring device and measuring method for transmissivity and reflectivity of large-aperture optical element | |
| CN101424664B (en) | Rail tread crack ultrasonic detection device and detecting method | |
| WO2005070743A1 (en) | Detecting rail defects | |
| EP2132561B1 (en) | Photoacoustic detector for measuring fine dust | |
| CN102297824B (en) | Single light source bio-aerosol particle detecting apparatus | |
| CN108871640A (en) | Residual stress nondestructive detection system and method based on transient grating Laser thermo-elastic generated surface acoustic waves | |
| CN104142195A (en) | Device and method for detecting interior initial stress of steel structural member based on ultrasonic method | |
| CN101419194B (en) | Device for detecting section tube damage by water immersion transverse wave method and damage detecting method thereof | |
| CN104965023A (en) | Multi-modal guided-wave industrial pipeline diagnostic method | |
| CN104960546A (en) | Flaw detecting car for inspecting steel rails of high-speed rail | |
| CN205484211U (en) | Ultrasonic wave residual stress test instrument | |
| CN103604868A (en) | Corrugated pipe grouting quality detection device and method based on synthetic aperture and information entropy | |
| CN102243098B (en) | In-situ test system of strong laser beam quality | |
| CN103471998A (en) | Ultrasonic material reflection and transmission coefficient laser measurement system | |
| CN112067696A (en) | System for detecting surface defects of pipeline based on laser ultrasonic | |
| CN108801927A (en) | A kind of device and method using photic ultrasound checking acetylene gas concentration | |
| CN104792868A (en) | Rotary-scanning online ultrasonic detection method for cylinders | |
| CN202339317U (en) | Laser ultrasonic detection system based on light deflection technique | |
| RU2480741C1 (en) | Method of nondestructive check of units in railway car trolleys and device for its realisation | |
| CN205607812U (en) | Particle size detection device | |
| JP4382141B2 (en) | Fine particle detector | |
| Sun et al. | Online dynamic detection of hazardous cracks in train wheels by probe combination: based on classical piezoelectric ultrasonic technology | |
| Xue et al. | Nondestructive testing of internal defects by ring-laser-excited ultrasonic |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180216 Effective date of abandoning: 20230901 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180216 Effective date of abandoning: 20230901 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |