CN207557174U - A kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound - Google Patents
A kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound Download PDFInfo
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- CN207557174U CN207557174U CN201720746315.XU CN201720746315U CN207557174U CN 207557174 U CN207557174 U CN 207557174U CN 201720746315 U CN201720746315 U CN 201720746315U CN 207557174 U CN207557174 U CN 207557174U
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Abstract
The utility model discloses a kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound, the automatic detection device of the wheel tread wheel rim electromagnetic coupling ultrasound includes：Electromagnetic coupling surface wave probe, electromagnetic coupling line focus oblique incidence body wave probe, multi-channel switcher, duplexer, RF high power impulse sender, small-signal filter and amplification device, data collecting card, industrial personal computer and motion control device；The automatic detection device of the wheel tread wheel rim electromagnetic coupling ultrasound of the utility model is solved the problems, such as to be realized on non-pulling wheel Turnings beds to the non-contact of passenger train wheel tread wheel rim defect and be detected without couplant.
Description
Technical field
The utility model is related to electromagnetic coupling ultrasonic detection technology field, more particularly to a kind of wheel tread wheel rim electricity
The automatic detection device of magnetic coupling ultrasound.
Background technology
When railway locomotive, car and EMU are run, wheel constantly rolls on rail, and tread is constituted with rail
Friction pair.Since wheel stress is complicated, operating condition is severe, abrasion, the crackle of tread and wheel rim, tread stripping are easily generated
From, scratch etc. failures, exacerbate vehicle operation insecurity, when abrasion reaches certain limit, it is necessary to which Turnings cuts wheel pedal
Face.And Turnings cuts wheel tread and rim for automobile wheel thickness will necessarily be thinned, its intensity can be reduced when its thickness is excessively thin, leads to wheel rim
The generation of underbead crack extends native defect, so the defects of detecting wheel rim underbead crack in time, particularly in non-pulling wheel
Turnings Turnings carry out ultrasonic inspection inspection in time after cutting wheel tread to wheel tread wheel rim, are to ensure that the operational safety such as passenger train
The important precautionary measures.
Currently, the internal flaw of wheel tread wheel rim is generally detected using piezoelectric supersonic technology both at home and abroad, it usually needs
Couplant water or couplant glycerine could realize the good coupling between tested part, and to the surface quality requirements of measured piece
It is higher, but Turnings couplants not allowed when being repaiied to wheel to Turnings using oil or water of non-pulling wheel, therefore be difficult to surpass using piezoelectricity
Sound detection.And other lossless detection methods, as Magnetic Flux Leakage Inspecting, Magnetic testing and Liquid penetrant testing are only capable of realizing surface or subsurface
Defect is difficult to realize on-line automatic scanning.Therefore, above-mentioned lossless detection method is difficult to realize repaiies wheel to stepping in Turnings Turnings of non-pulling wheel
Online automatic detection is carried out to the internal flaw of the surface defect of wheel tread and wheel rim behind face.
Electromagnetic coupling ultrasonic detection technology have the characteristics that it is non-contact, do not need to couplant, can realize online quick
Detection.The technology utilizes the principle of electromagnetic induction, by three kinds of magnetizing force, Lorentz force and magnetostriction mechanism, is directly treating
Metal material surface is surveyed to excite and receive ultrasonic wave.The electrical parameter of metal material to be measured, Magnetostrictive Properties, magnetization characteristic are determined
Which kind of fixed mechanism plays a major role.
At present about the electromagnetic coupling surface wave of wheel tread wheel rim and the focusing multi-functional composite ultraphonic detection method of bulk wave
Technology it is seldom.
Utility model patent grant number ZL200610021238.8 is authorized a kind of electric to surface wave for rolling stock wheel
Magnetic ultrasonic transducer, but the patent is detected only for surface or subsurface defects.
Utility model patent grant number ZL2011104366882.7 is authorized a kind of for high-speed train wheel tread
Multi probe electromagnetic ultrasonic surface wave detection method, but the patent be confined to high speed train wheel tread and nearly thread defect
Line detects in real time.
Therefore, it is desirable to have a kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound that can effectively solve
The defects of stating the prior art.
Utility model content
The purpose of this utility model is to provide a kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound with
It solves the problems, such as to be realized on non-pulling wheel Turnings beds to the non-contact of passenger train wheel tread wheel rim defect and be detected without couplant.
To achieve the above object, the utility model provides a kind of automatic detection dress of wheel tread wheel rim electromagnetic coupling ultrasound
Put including：Electromagnetic coupling surface wave probe, electromagnetic coupling line focus oblique incidence body wave probe, multi-channel switcher, duplexer, radio frequency
Highpowerpulse transmitter, small-signal filter and amplification device, data collecting card, industrial personal computer and motion control device；
Electromagnetic coupling surface wave probe, the electromagnetic coupling surface wave probe wheel tread excitation and receiving surface wave,
And circumferentially propagated along wheel, for detecting wheel tread surface defect and subsurface defects；
Electromagnetic coupling line focus oblique incidence body wave is popped one's head in, and the electromagnetic coupling line focus oblique incidence body wave probe is in vehicle wheel
Oblique incidence body wave is encouraged and received in rim, and is propagated along radial thickness direction, for detecting rim for automobile wheel internal flaw；
Multi-channel switcher, the multi-channel switcher respectively with the electromagnetic coupling surface wave probe and electromagnetic coupling line focus
Oblique incidence body wave pop one's head in intercommunication, realize the electromagnetic coupling surface wave probe and electromagnetic coupling line focus oblique incidence body wave probe
Time-sharing exciting and reception；
Duplexer, the duplexer is electrically connected the multi-channel switcher and small-signal filter and amplification device, described
Duplexer realizes high-low voltage separation, the duplexer for the isolation of high voltage pumping signal and Weak Ultrasonic echo-signal
Weak Ultrasonic echo-signal is sent to the small-signal filter and amplification device；
Motion control device, the motion control device are connect with the industrial personal computer, and the motion control device passes through volume
Code device obtains the turned position of vehicle wheel pair in real time；
Industrial personal computer, for the industrial personal computer equipped with the automatic detection of electromagnetic coupling ultrasound, radio frequency described in the industry control mechatronics is big
Power pulse transmitter, for controlling the amplitude of exciting current and frequency；
Radio-frequency pulse power transmitter, the radio-frequency pulse power transmitter are electrically connected the duplexer, the RF pulse-to-pulse
Power transmitter is rushed for providing high-power transient current excitation for electromagnetic coupling surface wave and oblique incidence body wave probe；
Small-signal filter and amplification device, the small-signal filter and amplification device are electrically connected the data collecting card, institute
Small-signal filter and amplification device is stated for completing the narrow-band filtering and plus and blowup of the Weak Ultrasonic echo-signal, and will
The Weak Ultrasonic echo-signal is sent to the data collecting card；
Data collecting card, the data collecting card are electrically connected the industrial personal computer, and the Weak Ultrasonic echo-signal is converted
For digital signal and it is sent to the industrial personal computer.
Preferably, the motion control device includes：Manipulator, protection door and exposure mechanism, the motion control device
Incremental encoder on idler wheel is installed, obtains the turned position of vehicle wheel pair in real time by encoder.
Preferably, the motion control device is electrically connected the radio-frequency pulse power transmitter by synchronous trigger circuit,
The radio-frequency pulse power transmitter is electrically connected the data collecting card, and the motion control device is according to preset displacement accuracy
Triggering radio-frequency pulse power transmitter makes it that ultrasonic signal be encouraged to be detected, while the data collecting card carries out data and adopts
Collection.
Preferably, multi-channel switcher described in the industry control mechatronics exports trigger signal to the multi-channel switcher.
Preferably, the electromagnetic coupling surface wave probe and electromagnetic coupling line focus oblique incidence body wave probe are respectively by the
One impedance matching box and the second impedance matching box connect the multi-channel switcher, first impedance matching box and the second impedance
Orchestration realizes the maximization of energy transmission, improves the conversion efficiency of electromagnetic ultrasonic probe for matching input and output impedance.
The utility model provides a kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound, the electromagnetism coupling
Electromagnetic coupling rayleigh waves inspection and electromagnetic coupling line focus oblique incidence body wave are detected reasonable group by the automatic detection device for closing ultrasound
It closes, wheel tread surface defect and subsurface defects detection and rim for automobile wheel Inner Defect Testing can be met simultaneously, substantially
Detection blind area influence is eliminated, realizes all positon automatic flaw detection of wheel.
Description of the drawings
Fig. 1 is the structure diagram of the automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound.
Fig. 2 is waveform diagram when the detection of electromagnetic coupling surface wave probe is defective.
Fig. 3 is waveform diagram when the probe detection of electromagnetic coupling line focus bulk wave is defective.
Fig. 4 is the transducing mechanism of electromagnetic coupling surface wave.
Fig. 5 is electromagnetic coupling line focus oblique incidence body wave transducing mechanism.
Specific embodiment
To make the purpose, technical scheme and advantage that the utility model is implemented clearer, below in conjunction with the utility model
Attached drawing in embodiment, is further described in more detail the technical scheme in the embodiment of the utility model.In the accompanying drawings, from beginning
Same or similar element is represented to same or similar label eventually or there is the element of same or like function.Described reality
It is the utility model part of the embodiment to apply example, instead of all the embodiments.Below with reference to the embodiment of attached drawing description
It is exemplary, it is intended to for explaining the utility model, and it is not intended that limitation to the utility model.It is new based on this practicality
Embodiment in type, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.The embodiment of the utility model is described in detail below in conjunction with the accompanying drawings.
In the description of the present invention, it is to be appreciated that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on attached drawing institutes
The orientation or position relationship shown is for only for ease of description the utility model and simplifies 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 this practicality
The limitation of novel protected range.
As shown in Figure 1, a kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound includes：Electromagnetic coupling surface
Wave probe, the first impedance matching box, the second impedance matching box, electromagnetic coupling line focus oblique incidence body wave probe, multi-channel switcher,
Duplexer, RF high power impulse sender, small-signal filter and amplification device, data collecting card, industrial personal computer and motion control
Device；
Electromagnetic coupling surface wave probe, the electromagnetic coupling surface wave probe wheel tread excitation and receiving surface wave,
And circumferentially propagated along wheel, for detecting wheel tread surface defect and subsurface defects；
Electromagnetic coupling line focus oblique incidence body wave is popped one's head in, and the electromagnetic coupling line focus oblique incidence body wave probe is in vehicle wheel
Oblique incidence body wave is encouraged and received in rim, and is propagated along radial thickness direction, for detecting rim for automobile wheel internal flaw；
Multi-channel switcher, the multi-channel switcher respectively with the electromagnetic coupling surface wave probe and electromagnetic coupling line focus
Oblique incidence body wave pop one's head in intercommunication, realize the electromagnetic coupling surface wave probe and electromagnetic coupling line focus oblique incidence body wave probe
Time-sharing exciting and reception；
First impedance matching box and the second impedance matching box, the electromagnetic coupling surface wave probe and electromagnetic coupling line focus
Oblique incidence body wave probe connects the multi-channel switcher by the first impedance matching box and the second impedance matching box respectively, and described the
One impedance matching box and the second impedance matching box realize the maximization of energy transmission, improve electricity for matching input and output impedance
The conversion efficiency of magnetic ultrasonic probe.
Duplexer, the duplexer is electrically connected the multi-channel switcher and small-signal filter and amplification device, described
Duplexer realizes high-low voltage separation, the duplexer for the isolation of high voltage pumping signal and Weak Ultrasonic echo-signal
Weak Ultrasonic echo-signal is sent to the small-signal filter and amplification device；
Motion control device, the motion control device are connect with the industrial personal computer, and the motion control device passes through volume
Code device obtains the turned position of vehicle wheel pair in real time；
Industrial personal computer, for the industrial personal computer equipped with the automatic detection of electromagnetic coupling ultrasound, radio frequency described in the industry control mechatronics is big
Power pulse transmitter, for controlling the amplitude of exciting current and frequency；
Radio-frequency pulse power transmitter, the radio-frequency pulse power transmitter are electrically connected the duplexer, the RF pulse-to-pulse
Power transmitter is rushed for providing high-power transient current excitation for electromagnetic coupling surface wave and oblique incidence body wave probe；
Small-signal filter and amplification device, the small-signal filter and amplification device are electrically connected the data collecting card, institute
Small-signal filter and amplification device is stated for completing the narrow-band filtering and plus and blowup of the Weak Ultrasonic echo-signal, and will
The Weak Ultrasonic echo-signal is sent to the data collecting card；
Data collecting card, the data collecting card are electrically connected the industrial personal computer, and the Weak Ultrasonic echo-signal is converted
For digital signal and it is sent to the industrial personal computer.
The motion control device is electrically connected the radio-frequency pulse power transmitter, the radio frequency by synchronous trigger circuit
Pulse power transmitter is electrically connected the data collecting card, and the motion control device triggers radio frequency according to preset displacement accuracy
Pulse power transmitter makes it that ultrasonic signal be encouraged to be detected, while the data collecting card carries out data acquisition.
Multi-channel switcher described in the industry control mechatronics exports trigger signal to the multi-channel switcher.
In an embodiment not shown, the motion control device includes：Manipulator, protection door and exposure mechanism, it is described
Motion control device installs incremental encoder on idler wheel, obtains the turned position of vehicle wheel pair in real time by encoder.
As shown in Fig. 2, pasting wear-resistant material in the end face of surface wave probe, for protecting coil, improve probe and use the longevity
Life.Multi-directional ball is installed below surface wave probe, for ensure probe with the constant lift-off distance of wheel tread, avoid probe with
Wheel is in direct contact.Wear-resistant material is pasted in the end face of surface wave probe, for protecting coil, improves probe service life.
Installation multi-directional ball below surface wave probe for ensureing probe and the constant lift-off distance of wheel tread, avoids probe and wheel
It is in direct contact.
As shown in figure 3, electromagnetic coupling line focus probe can not only generate the oblique incidence body wave of certain angle, but also can be with
It realizes that ultrasonic wave realizes line focus in a certain depth, enhances the directive property of acoustic beam, be conducive to find more small internal fissure.
As shown in figure 4, surface wave is generated by equidistant tortuous coil, each conducting wire of coil can regard a ultrasound as
Vibration source, and interfered because frequency is identical.When tortuous coil passes to high frequency amplitude exciting current, it will in wheel to be measured
Surface forms current vortex, and generates Lorentz force under the action of permanent magnet provides bias magnetic field, shakes so as to cause surface particle
It is dynamic.By control coil spacing d and driving frequency f, each vibration source will be overlapped mutually and form oblique incidence SV waves, oblique angle, θ
For sin (θ)=Vr/ (2*d*f), wherein VrGroup velocity for surface wave.With the reduction of winding wire spacing, θ gradually increases,
The ingredient of surface wave is strengthened therewith.When θ increases to 90 °, oblique incidence SV waves are replaced completely by surface wave.
As shown in figure 5, line focus bulk wave is generated by not equidistant coil, every conducting wire of coil can regard vibration source as, because
Frequency is identical and interferes, and since the sound path that every circle conducting wire reaches focus point meets certain rule, and is sent out in focal spot
Raw mutually long superposition.By changing the spacing of coil adjacent wires, its distance with focus point is made to meet ri-ri+1=Vs/ (2*f),
Line focus bulk wave can be generated.
The description of Lorentz force transducing mechanism is as shown in Figure 4.
Realize on non-pulling wheel Turnings beds increase railway locomotive, car, EMU wheel tread Turnings are repaiied after to wheel tread
Wheel rim carry out ultrasonic examination inspection operation, for eliminate railway locomotive, car, EMU etc. because wheel tread occur defect,
The defects of crackle, jeopardizes the failure of traffic safety, and the inspection operation of railway locomotive, car, EMU periodic inspection is transplanted to day
In normal maintenance work, it will ensure that traffic safety window moves forward, to ensure that safety of railway traffic provides reliable Means of Ensuring.By
Couplant is not needed in electromagnetic coupling ultrasonic detection technology, therefore will not be to the electrical system and mechanical part of non-pulling wheel Turnings
It damages or corrodes, the precision of Turnings friction rollers of non-pulling wheel will not be influenced, one will not be caused to the wheel tread of detection
Fixed corrosion, does not pollute the environment more.Therefore, it is automatic to develop wheel tread wheel rim electromagnetic coupling ultrasonic surface wave/focusing bulk wave
Detection device has important engineering application value.
On non-pulling wheel Turnings beds, integrated wheel tread wheel rim electromagnetic coupling ultrasonic surface wave/focusing bulk wave detects work(automatically
Can, locomotive, passenger car bottom, EMU wheel after being repaiied for Turnings carry out fast flaw detection, and provide defect automatic early-warning function.Tool
It has the following effects：
(1) surface defect of wheel tread and the internal flaw of subsurface defects and rim for automobile wheel are found in time, especially
It is crackle, railway locomotive, car, EMU can be eliminated and jeopardize driving due to because the defects of wheel tread generation defect, crackle
The failure of safety.
(2) the electromagnetic coupling ultrasonic detection method involved by this patent have many advantages, such as it is non-contact, without couplant, can be with
Realize quick online automatic detection, flaw detection is efficient, is conducive to save human cost.
It (3), will not be to the electrical of non-pulling wheel Turnings since electromagnetic coupling ultrasonic detection technology does not need to couplant
System and mechanical part are damaged or are corroded, and will not influence the precision of Turnings friction rollers of non-pulling wheel, will not be given to be visited and be taken turns
Corrosion is caused to tread, non-pulling wheel Turnings has been widened using function, by the inspection of railway locomotive, car, EMU periodic inspection
Process is transplanted in maintenance work, will ensure that traffic safety window moves forward, to ensure that safety of railway traffic provides reliably
Means of Ensuring.
In non-pulling wheel, Turnings install wheel tread wheel rim electromagnetic coupling ultrasonic surface wave/focusing bulk wave automatic detection device additional
System is domestic for the first time, has great engineering application value and wide promotion prospect.
It is last it is to be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited
System.Although the utility model is described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should manage
Solution：It can still modify to the technical solution recorded in foregoing embodiments or to which part technical characteristic into
Row equivalent replacement；And these modifications or replacement, various embodiments of the utility model that it does not separate the essence of the corresponding technical solution
The spirit and scope of technical solution.
Claims (5)
1. a kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound, which is characterized in that including：Electromagnetic coupling surface
It is wave probe, electromagnetic coupling line focus oblique incidence body wave probe, multi-channel switcher, duplexer, RF high power impulse sender, micro-
Weak signal filter and amplification device, data collecting card, industrial personal computer and motion control device；
Electromagnetic coupling surface wave probe, the electromagnetic coupling surface wave probe is on wheel tread excitation and receiving surface wave, and edge
It wheel circumferentially to propagate, for detecting wheel tread surface defect and subsurface defects；
Electromagnetic coupling line focus oblique incidence body wave is popped one's head in, and the electromagnetic coupling line focus oblique incidence body wave probe is in rim for automobile wheel
Excitation and reception oblique incidence body wave, and propagated along radial thickness direction, for detecting rim for automobile wheel internal flaw；
Multi-channel switcher, the multi-channel switcher are oblique with the electromagnetic coupling surface wave probe and electromagnetic coupling line focus respectively
The probe intercommunication of beam wave, realizes the timesharing of the electromagnetic coupling surface wave probe and electromagnetic coupling line focus oblique incidence body wave probe
Excitation and reception；
Duplexer, the duplexer are electrically connected the multi-channel switcher and small-signal filter and amplification device, the duplex
Machine realizes high-low voltage separation, the duplexer will be micro- for the isolation of high voltage pumping signal and Weak Ultrasonic echo-signal
Weak ultrasound echo signal is sent to the small-signal filter and amplification device；
Motion control device, the motion control device are connect with the industrial personal computer, and the motion control device passes through encoder
The turned position of vehicle wheel pair is obtained in real time；
Industrial personal computer, the industrial personal computer is equipped with the automatic detection of electromagnetic coupling ultrasound, RF high power described in the industry control mechatronics
Impulse sender, for controlling the amplitude of exciting current and frequency；
Radio-frequency pulse power transmitter, the radio-frequency pulse power transmitter are electrically connected the duplexer, the radio-frequency pulse work(
Rate transmitter is used to provide high-power transient current excitation for electromagnetic coupling surface wave and oblique incidence body wave probe；
Small-signal filter and amplification device, the small-signal filter and amplification device is electrically connected the data collecting card, described micro-
Weak signal filter and amplification device is used to complete the narrow-band filtering and plus and blowup of the Weak Ultrasonic echo-signal, and by described in
Weak Ultrasonic echo-signal is sent to the data collecting card；
Data collecting card, the data collecting card are electrically connected the industrial personal computer, the Weak Ultrasonic echo-signal are converted to number
Word signal is simultaneously sent to the industrial personal computer.
2. the automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound according to claim 1, it is characterised in that：Institute
Motion control device is stated to include：Manipulator, protection door and exposure mechanism, the motion control device install increment volume on idler wheel
Code device obtains the turned position of vehicle wheel pair by encoder in real time.
3. the automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound according to claim 2, it is characterised in that：Institute
It states motion control device and the radio-frequency pulse power transmitter, the radio-frequency pulse power emission is connected by synchronous trigger circuit
Device is electrically connected the data collecting card, and the motion control device triggers radio-frequency pulse power emission according to preset displacement accuracy
Device makes it that ultrasonic signal be encouraged to be detected, while the data collecting card carries out data acquisition.
4. the automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound according to claim 3, it is characterised in that：Institute
Multi-channel switcher described in industry control mechatronics is stated, trigger signal is exported to the multi-channel switcher.
5. the automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound according to claim 1, it is characterised in that：Institute
Electromagnetic coupling surface wave probe and electromagnetic coupling line focus oblique incidence body wave probe are stated respectively by the first impedance matching box and the
Two impedance matching boxs connect the multi-channel switcher, first impedance matching box and the second impedance matching box and are inputted for matching
Output impedance realizes the maximization of energy transmission, improves the conversion efficiency of electromagnetic ultrasonic probe.
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| CN201720746315.XU CN207557174U (en) | 2017-06-26 | 2017-06-26 | A kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound |
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| CN201720746315.XU CN207557174U (en) | 2017-06-26 | 2017-06-26 | A kind of automatic detection device of wheel tread wheel rim electromagnetic coupling ultrasound |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132282A (en) * | 2017-06-26 | 2017-09-05 | 北京海冬青机电设备有限公司 | The automatic detection device and method of a kind of wheel tread wheel rim electromagnetic coupled ultrasound |
| CN109085239A (en) * | 2018-07-24 | 2018-12-25 | 成都铁安科技有限责任公司 | A kind of wheel shaft comprehensive diagnos platform |
| CN110672722A (en) * | 2019-11-07 | 2020-01-10 | 山东省科学院激光研究所 | Locomotive wheel tread defect online detection system and method based on electromagnetic ultrasound |
| CN110672718A (en) * | 2019-07-08 | 2020-01-10 | 南昌航空大学 | Electromagnetic ultrasonic point focusing/diverging surface wave method and device for steel rail tread detection |
| CN112710731A (en) * | 2020-11-23 | 2021-04-27 | 合肥通用机械研究院有限公司 | Electromagnetic ultrasonic transducer and defect detection method based on same |
-
2017
- 2017-06-26 CN CN201720746315.XU patent/CN207557174U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107132282A (en) * | 2017-06-26 | 2017-09-05 | 北京海冬青机电设备有限公司 | The automatic detection device and method of a kind of wheel tread wheel rim electromagnetic coupled ultrasound |
| CN109085239A (en) * | 2018-07-24 | 2018-12-25 | 成都铁安科技有限责任公司 | A kind of wheel shaft comprehensive diagnos platform |
| CN110672718A (en) * | 2019-07-08 | 2020-01-10 | 南昌航空大学 | Electromagnetic ultrasonic point focusing/diverging surface wave method and device for steel rail tread detection |
| CN110672718B (en) * | 2019-07-08 | 2022-05-24 | 南昌航空大学 | Electromagnetic ultrasonic point focusing/diverging surface wave method and device for steel rail tread detection |
| CN110672722A (en) * | 2019-11-07 | 2020-01-10 | 山东省科学院激光研究所 | Locomotive wheel tread defect online detection system and method based on electromagnetic ultrasound |
| CN110672722B (en) * | 2019-11-07 | 2022-08-05 | 山东泰威声电信息技术有限公司 | Locomotive wheel tread defect online detection system and method based on electromagnetic ultrasound |
| CN112710731A (en) * | 2020-11-23 | 2021-04-27 | 合肥通用机械研究院有限公司 | Electromagnetic ultrasonic transducer and defect detection method based on same |
| CN112710731B (en) * | 2020-11-23 | 2023-11-24 | 合肥通用机械研究院有限公司 | Electromagnetic ultrasonic transducer and defect detection method based on same |
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