CN106353397A - Vehicular magnetic flux leakage detecting equipment and system for steel rail surface damage - Google Patents
Vehicular magnetic flux leakage detecting equipment and system for steel rail surface damage Download PDFInfo
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- CN106353397A CN106353397A CN201610805725.7A CN201610805725A CN106353397A CN 106353397 A CN106353397 A CN 106353397A CN 201610805725 A CN201610805725 A CN 201610805725A CN 106353397 A CN106353397 A CN 106353397A
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- 230000004907 flux Effects 0.000 title claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 title abstract description 9
- 239000010959 steel Substances 0.000 title abstract description 9
- 239000000523 sample Substances 0.000 claims abstract description 90
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 230000005284 excitation Effects 0.000 claims abstract description 24
- 208000014674 injury Diseases 0.000 claims description 53
- 230000008733 trauma Effects 0.000 claims description 53
- 238000007689 inspection Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 18
- 230000005347 demagnetization Effects 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 12
- 230000005415 magnetization Effects 0.000 claims description 9
- 230000003750 conditioning effect Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 208000027418 Wounds and injury Diseases 0.000 claims description 4
- 238000011161 development Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 12
- 230000007547 defect Effects 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910000997 High-speed steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013481 data capture Methods 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 210000001550 testis Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
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Abstract
The invention provides vehicular magnetic flux leakage detecting equipment and system for steel rail surface damage. The equipment comprises an excitation power supply, a first probe, a second probe, a gate circuit and a data collecting card, wherein the excitation power supply supplies power for the first probe and the second probe. During uplink detection, a first magnetizer magnetizes a to-be-detected steel rail, a first array sensor picks up a magnetic flux leakage signal, and a second magnetizer demagnetizes the magnetized steel rail; during downlink detection, the second magnetizer magnetizes the to-be-detected steel rail, a second array sensor picks up the magnetic flux leakage signal, and the first magnetizer demagnetizes the magnetized steel rail; the gate circuit outputs a triggering signal according to the magnetic flux leakage signal; the data collecting card collects the magnetic flux leakage signal according to the triggering signal. By the vehicular magnetic flux leakage detecting equipment, the magnetic flux leakage signal of the steel rail surface damage can be detected, detection precision is increased, and the requirements of modern railways rapid in development are satisfied.
Description
Technical field
The present invention, with regard to detection technique field, especially with regard to the carrying out flaw detection technology of in-service rail, is concretely one
Plant the vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting and system.
Background technology
In-service rail examination is to ensure that the important measures of safe railway operation.At present, the commonly used speed of service of China is
The seamed high-speed steel rail inspection car of 80km/h carries out defect detecting test to rail.The ultrasonic detecting equipment that this inspection car carries can only detect
, there is check frequency in Rail Surface in the internal trauma of rail.
Using Magnetic Flux Leakage Inspecting technology to ferrimagnet surface and this characteristic of sub-surface environment sensitive, in rail-defect detector car
Upper carrying Magnetic Flux Leakage Testing System can make up the deficiency of ultrasonic detecting equipment surface trauma Detection capability.Magnetic Flux Leakage Inspecting technology is
By magnetizing to rail, then the one kind forming stray field change because of defect presence is measured using magneto-dependent sensor lossless
New detecting technique.Fig. 1 is rail side view, and Fig. 2 is undamaged rail plan view, and Fig. 3 is the rail plan view having damage.Its
In, 1 is yoke, and 2 is the magnetic line of force, and 3 is power supply, and 4 is magneto-dependent sensor, and 5 is coil, and 6 is stray field, and 7 is trauma.As Fig. 1 extremely
Shown in Fig. 3, if the steel rail material being magnetized is continuous and uniform, the magnetic line of force in rail is nearly all bound in inside rail,
So Rail Surface will not have the magnetic line of force to pass, there will not be the magnetic line of force and enter inside workpiece, such rail from Rail Surface
Surface cannot form stray field.However, if there are can cutting magnetic line trauma be present in rail top layer when, will be because of wound
Damage pcrmeability less, magnetic resistance larger and change the magnetic line of force by approach.The part magnetic line of force will select to overflow steel from fault location
Rail, crosses and enters back into inside rail above defect, and the leakage of this magnetic line of force will lead to the formation of stray field.
The detection of rail head of rail top surface trauma now relies primarily on the detection of man-hour manually hand-held formula equipment or the inspection of SPEED VISION detection technique
Survey.Wherein man-hour manually hand-held formula testing equipment detection efficiency is low, can not meet the modern railways demand of high speed development.SPEED VISION is examined
Survey technology cannot detect rail head of rail sub-surface trauma, and accuracy of detection is low.
Therefore, how to research and develop out a kind of new scheme to solve the technological deficiency of such scheme presence is this area
Technical barrier urgently to be resolved hurrily.
Content of the invention
For the above-mentioned technical problem overcoming prior art to exist, the invention provides a kind of vehicle-mounted rail surface trauma
The equipment of Magnetic Flux Leakage Inspecting and system, are powered by excitation power supply, and the detection probe of unilateral rail comprises the first probe and the second spy
Head, each probe is made up of magnetizator and sensor array, and wherein magnetizator is magnetized to rail or demagnetization, sensor array
Pickup magnetic leakage signal, whether gate circuit monitoring electromagnetic signal exceedes threshold value, when leakage field signal of telecommunication amplitude exceedes default threshold value
When, trigger data acquisition card gathers the leakage field signal of telecommunication, so completes the detection of the magnetic leakage signal to rail surface trauma, and increases
Add accuracy of detection, meet the modern railways demand of high speed development.
It is an object of the invention to provide a kind of equipment of vehicle-mounted rail surface trauma Magnetic Flux Leakage Inspecting, described equipment
Including excitation power supply, the first probe, the second probe, gate circuit and data collecting card, wherein, described excitation power supply, uses
In to the first described probe, the second probe power supply；The first described probe includes the first magnetizator and the first array sensing
Device；The second described probe includes the second magnetizator and the second sensor array；When up detection, described first magnetization
Device, for magnetizing detected rail, described the first sensor array, for picking up the magnetic leakage signal of described rail, described
The second magnetizator, for magnetization after rail carry out demagnetization process；When descending detection, described the second magnetizator, use
In the rail that magnetization is detected, described the second sensor array, for picking up the magnetic leakage signal of described rail, described first
Magnetizator, for carrying out demagnetization process to the rail after magnetization；Described gate circuit, for defeated according to described magnetic leakage signal
Go out trigger；Described data collecting card, for the magnetic leakage signal according to described trigger collection.
In a preferred embodiment of the invention, when up detection, described excitation power supply, for described first
Magnetizator provides unidirectional current, provides alternating current to the second described magnetizator.
In a preferred embodiment of the invention, when descending detection, described excitation power supply, for described second
Magnetizator provides unidirectional current, provides alternating current to the first described magnetizator.
In a preferred embodiment of the invention, the amplitude of described alternating current is more than described galvanic amplitude.
In a preferred embodiment of the invention, described equipment also includes signal conditioning circuit, for described leakage
Magnetic signal is amplified, Filtering Processing, and the magnetic leakage signal after processing is sent to gate circuit.
In a preferred embodiment of the invention, described gate circuit includes: magnetic leakage signal receiver module, for receiving
Magnetic leakage signal after described process；Amplitude determining module, for determining the amplitude of the magnetic leakage signal after described process；Threshold value obtains
Module, for obtaining threshold value set in advance；Whether judge module, for judging the amplitude of described magnetic leakage signal more than described
Threshold value；Trigger output module, for when described judge module is judged as YES, exporting trigger.
In a preferred embodiment of the invention, described equipment also includes: magnetic leakage signal processor, described for receiving
The magnetic leakage signal of data collecting card collection, described magnetic leakage signal is preserved.
It is an object of the invention to provide a kind of system of vehicle-mounted rail surface trauma Magnetic Flux Leakage Inspecting, described
System includes inspection car, detected rail, head rod, the second connecting rod and vehicle-mounted rail surface trauma leakage field
The equipment of detection, wherein, described head rod, the steering for connecting described inspection car carries framework and described rail
First probe of the Magnetic Flux Leakage Inspecting equipment of trauma；The second described connecting rod, for connecting the steering carrier of described inspection car
Second probe of the Magnetic Flux Leakage Inspecting equipment of structure and described rail defects and failures.
In a preferred embodiment of the invention, described system also includes the first spring, with described head rod,
The first described probe is connected, for controlling pushing of described first probe.
In a preferred embodiment of the invention, described system also includes: second spring, is connected with described second
Bar, the described second probe are connected, for controlling pushing of described second probe.
In a preferred embodiment of the invention, described system also includes the first piston shoes, is arranged at described first probe
Bottom.
In a preferred embodiment of the invention, described system also includes the second piston shoes, is arranged at described second probe
Bottom.
The beneficial effects of the present invention is, there is provided a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting and be
System, is powered by excitation power supply, and the detection probe of unilateral rail comprises the first probe and the second probe, each probe by magnetizator and
Sensor array forms, and wherein magnetizator is magnetized to rail or demagnetization, and sensor array picks up magnetic leakage signal, gate circuit
Whether monitoring electromagnetic signal exceedes threshold value, and when leakage field signal of telecommunication amplitude exceedes default threshold value, trigger data acquisition card gathers
The leakage field signal of telecommunication, so completes the detection of the magnetic leakage signal to rail defects and failures, and increased accuracy of detection, meets and sends out at a high speed
The modern railways demand of exhibition, solves following several big technology in the detection of rail surface trauma for the High Speed Magnetic Flux Leakage detection technique and asks
Topic: the big speed issue limiting high speed detection of sensor array gathered data amount；High Speed Magnetic Flux Leakage detection technique is in high speed detection mistake
Affected by lift-off in journey；Based on the demagnetization technology after the Magnetic Flux Leakage Inspecting of rail-defect detector car.
It is that the above and other objects, features and advantages of the present invention can be become apparent, preferred embodiment cited below particularly,
And coordinate institute's accompanying drawings, it is described in detail below.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Have technology description in required use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, acceptable
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the top view of rail；
Fig. 2 is the plan view of undamaged rail；
Fig. 3 is the plan view of the rail having damage；
Fig. 4 is a kind of embodiment of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
One structured flowchart；
Fig. 5 is a kind of embodiment of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Two structured flowchart；
Fig. 6 is a kind of embodiment of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Three structured flowchart；
Fig. 7 is gate circuit in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Structured flowchart；
Fig. 8 is gate circuit in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Circuit theory diagrams；
Fig. 9 is gate circuit in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Principle schematic；
Figure 10 is a kind of side view of vehicle-mounted system of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention；
Figure 11 is a kind of plan view of vehicle-mounted system of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The present invention is directed to the domestic at present rail surface based on large-scale rail-defect detector car and sub-surface trauma high speed detection lacks
Weary effective means, rail surface state can not be effectively controlled.The polishing of one side rail surface is not effectively instructed, for guaranteeing
The situation of security presence excessively polishing；On the other hand lead to can not due to the presence of top surface trauma for existing large-scale rail-defect detector car
The problem of effective detection part rail head core wound is it is proposed that one kind is applied to field of non destructive testing, especially in-service rail leakage field skill
The large-scale rail-defect detector car of art flaw detection, this Magnetic Flux Leakage Testing System passes through the rail surface that corresponding transformation also apply be applicable to other forms
Trauma detects.
Fig. 4 is a kind of knot of vehicle-mounted embodiment one of the equipment of rail surface trauma Magnetic Flux Leakage Inspecting proposed by the present invention
Structure block diagram, as shown in Figure 4, described equipment include excitation power supply 10, first probe 20, second probe 30, gate circuit 40 with
And data collecting card 50.
Wherein, described excitation power supply 10, for described first probe the 20, second probe 30 power supply.
The first described probe 20 includes the first magnetizator 21 and the first sensor array 22；
The second described probe 30 includes the second magnetizator 31 and the second sensor array 32；
When up detection, described the first magnetizator 21, for magnetizing detected rail, the first described array passes
Sensor 22, for picking up the magnetic leakage signal of described rail, described the second magnetizator 31, for disappearing to the rail after magnetization
Magnetic treatment；
When descending detection, described the second magnetizator 31, for magnetizing detected rail, the second described array passes
Sensor 32, for picking up the magnetic leakage signal of described rail, described the first magnetizator 21, for disappearing to the rail after magnetization
Magnetic treatment；
Described gate circuit 40, for exporting trigger according to described magnetic leakage signal；
Described data collecting card 50, for the magnetic leakage signal according to described trigger collection.
Specifically, when up detection, described excitation power supply, for providing unidirectional current to the first described magnetizator,
There is provided alternating current to the second described magnetizator.When descending detection, described excitation power supply, for the second described magnetization
Device provides unidirectional current, provides alternating current to the first described magnetizator.The amplitude of described alternating current is more than described galvanic
Amplitude.
As above it is the embodiment one of a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting that the present invention provides,
Powered by excitation power supply, the detection probe of unilateral rail comprises the first probe and the second probe, and each probe is by magnetizator and battle array
Sensor forms, and wherein magnetizator is magnetized to rail or demagnetization, and sensor array picks up magnetic leakage signal, gate circuit root
Gather the leakage field signal of telecommunication according to leakage field signal of telecommunication trigger data acquisition card, so complete the magnetic leakage signal to rail surface trauma
Detection, and increased accuracy of detection, meet the modern railways demand of high speed development.
Fig. 5 is a kind of embodiment of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Two structured flowchart, as shown in Figure 5, this equipment also includes in embodiment two:
Signal conditioning circuit 60, for being amplified to described magnetic leakage signal, Filtering Processing, and by the leakage field after processing
Signal is sent to gate circuit.
As above it is the embodiment two of a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting that the present invention provides,
In this embodiment, powered by excitation power supply, the detection probe of unilateral rail comprises the first probe and the second probe, each spy
Head is made up of magnetizator and sensor array, and wherein magnetizator is magnetized to rail or demagnetization, and sensor array picks up leakage field
Signal, signal conditioning circuit is amplified to magnetic leakage signal, Filtering Processing, and gate circuit is adopted according to leakage field signal of telecommunication trigger data
Truck gathers the leakage field signal of telecommunication, so completes the detection of the magnetic leakage signal to rail defects and failures, and increased accuracy of detection, meets
The modern railways demand of high speed development.
Fig. 6 is a kind of embodiment of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Three structured flowchart, it will be appreciated from fig. 6 that this equipment also includes in embodiment three:
Magnetic leakage signal processor 70, for receiving the magnetic leakage signal of described data collecting card collection, by described leakage field letter
Number preserved.In a particular embodiment, magnetic leakage signal processor is all to realize such as by computer processing system, its
It is used for preserving and processing magnetic leakage signal, and then judge that rail whether there is trauma.
As above it is the embodiment three of a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting that the present invention provides,
In this embodiment, testing equipment is by magnetic leakage signal processor, excitation power supply, the first probe, the second probe, signal condition electricity
Road, gate circuit data capture card composition.Excitation power supply is provided that unidirectional current and alternating current, and unidirectional current is used for tested rail
Magnetized magnetizator is powered, and alternating current is used for the magnetizator of demagnetization after the completion of the detection of tested rail is powered.The inspection of unilateral rail
Probing head comprises the first probe and second probe two parts.Each probe is made up of magnetizator and sensor array, wherein magnetizes
Device is used for rail is magnetized or demagnetization, and sensor array is used for picking up stray field signal.When the up detection of inspection car, the
One probe magnetizator magnetizes tested rail and picks up magnetic leakage signal, and the second probe magnetizator is used for carrying out demagnetization to magnetized rail
Process, sensor array does not work；When the descending detection of inspection car, the second probe magnetizator magnetizes tested rail and picks up leakage field
Signal, the second probe magnetizator is used for carrying out demagnetization process to magnetized rail.The leakage field letter of sensor array pickup in probe
Number be converted to the signal of telecommunication amplify through signal conditioning circuit, Filtering Processing, the leakage field signal of telecommunication after process entered with gate circuit
Row compares.Gate circuit is used for monitoring whether electromagnetic signal exceedes threshold value, when leakage field signal of telecommunication amplitude exceedes default threshold value,
Gate circuit trigger data acquisition card gathers the leakage field signal of telecommunication.The signal transmission of data collecting card collection is to magnetic leakage signal processor
Processing system preserves and processes.Final magnetic leakage signal processor processing system judges that rail whether there is trauma.
Fig. 7 is gate circuit in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Structured flowchart, as shown in Figure 7, described gate circuit 40 includes:
Magnetic leakage signal receiver module 41, for receiving the magnetic leakage signal after described process；
Amplitude determining module 42, for determining the amplitude of the magnetic leakage signal after described process；
Threshold value acquisition module 43, for obtaining threshold value set in advance；
Whether judge module 44, for judging the amplitude of described magnetic leakage signal more than described threshold value；
Trigger output module 45, for when described judge module is judged as YES, exporting trigger.
That is, the gate circuit in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting of present invention offer is used for
Whether monitoring electromagnetic signal exceedes threshold value, and when leakage field signal of telecommunication amplitude exceedes default threshold value, gate circuit trigger data is adopted
Truck gathers the leakage field signal of telecommunication.So, the present invention uses sensor array to receive field signal, by gate circuit trigger data
Harvester gathers magnetic leakage signal, due to all gathering the field signal data of whole detection process in high speed detection, data
Collection capacity is big, only extracts the magnetic leakage signal exceeding threshold value, greatly improve data acquisition after therefore the present invention arranges gate circuit
Accuracy.
Fig. 8 is gate circuit in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
Circuit theory diagrams, Fig. 9 is lock in a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention
The principle schematic of gate circuit.From Fig. 8, Fig. 9, gate circuit is designed for monitoring whether magnetic leakage signal exceedes and pre-set
Threshold value.When magnetic leakage signal exceedes threshold value, gate circuit trigger data acquisition card, data collecting card gathers the leakage field signal of telecommunication,
And be transferred to the process of magnetic leakage signal processor and preserve.When magnetic leakage signal is not reaching to threshold value, data collecting card will not be carried out
The collection of magnetic leakage signal data.So the rate request of inspection car high speed detection will be adapted to.Single pass gate circuit schematic diagram
As shown in figure 8, realizing by window comparator lm393, as ui (ua > ub) between ua and ub, it is output as uoh, now not
Trigger data acquisition card gathers.As ui (ua > ub) outside ua and ub, it is output as uol, now trigger data acquisition card is adopted
Collection.The magnetic leakage signal that ui exports for modulate circuit, threshold voltage ua and ub is controllable voltage, can be adjusted by digital potentiometer,
Meet the threshold voltage adjustment under different detection environment.
The system of a kind of vehicle-mounted rail surface trauma Magnetic Flux Leakage Inspecting of the present invention also proposition, described system includes detecting a flaw
Car, detected rail, head rod 200, the second connecting rod 300 and aforesaid vehicle-mounted rail surface trauma leakage field inspection
The equipment surveyed.Wherein, described head rod 200, the steering for connecting described inspection car carries framework 400 and described
First probe 20 of the vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting；The second described connecting rod 300, described for connecting
The steering of inspection car carries the second probe 30 of framework 400 and the described vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting.
In the other embodiment of the present invention, described system also includes: the first spring 500, with described first even
Extension bar 200, the described first probe 20 are connected, for controlling pushing of described first probe.
Second spring 600, is connected with the second described connecting rod 300, the described second probe 30, described for controlling
Second probe push.
In the other embodiment of the present invention, described system also includes: the first piston shoes 700, is arranged at described first
The bottom of probe 20.Second piston shoes 800, are arranged at the bottom of described second probe 30.
Figure 10 is a kind of side view of vehicle-mounted system of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention,
Figure 11 is a kind of plan view of vehicle-mounted system of rail surface trauma Magnetic Flux Leakage Inspecting provided in an embodiment of the present invention.Probe and spy
Hinder car (in figure is not drawn) and the location arrangements of detected rail are as shown in Figure 10, under whole car, device is by the bogie of inspection car
Load carrier 400, head rod 200, the second connecting rod 300, the first spring 500, second spring 600 and the first piston shoes 700,
Second piston shoes 800 form.Bogie load carrier 400 is used for connecting bogie and probe connecting rod.Connecting rod is used for connecting and turns
To frame load carrier and probe.Spring is used for controlling pushing of probe to contact so that popping one's head in rail head of rail top surface, it is to avoid produce
Lift-off changes thus affecting Detection results, when probe touches other foreign bodies, probe the elasticity due to spring lifted with
As for not damaging probe.Piston shoes are installed on probe bottom, and for protection probe, and piston shoes can be changed because of loss.Visit
Head eliminates vibration and the impact of lift-off change with the location arrangements design of inspection car and detected rail.Because Figure 10 is to overlook
Figure, the connecting rod in therefore Figure 10 is head rod and the second connecting rod, pops one's head in as the first probe and the second probe.
Further, as shown in figure 11, when the up detection of inspection car (in Figure 11 to the left run), excitation power supply is to first
Probe magnetizator carries out powered by direct current, and detected rail is magnetized, and meanwhile, excitation power supply is entered to the second probe magnetizator
Row AC-powered, and alternating current Amplitude Ration DC current is big, to reach the purpose that the rail after being detected is carried out with demagnetization.
(run to the right in Figure 11) when the descending detection of inspection car, excitation power supply carries out powered by direct current to the second probe magnetizator,
Detected rail is magnetized, meanwhile, excitation power supply carries out AC-powered to the first probe magnetizator, and alternating current width
Value is bigger than DC current, to reach the purpose that the rail after being detected is carried out with demagnetization.
As described above, as the present invention provide a kind of vehicle-mounted rail surface trauma Magnetic Flux Leakage Inspecting system.Detection system
System is directed to railway way traffic feature, is designed to up-downgoing dual probe and is detected, solves in-service rail leakage field technology high-speed
The demagnetization technical problem of detection.Probe adopts piston shoes form design, controls, by spring, the contact that probe is with rail, solves leakage
Magnetic testi technology is vibrated and the technical barrier of lift-off impact is it is contemplated that field probe mounting means based on inspection car, that is, by
Survey the spatial relation of rail and probe.
In sum, a kind of vehicle-mounted equipment of rail surface trauma Magnetic Flux Leakage Inspecting proposed by the present invention and system, solution
The big speed issue limiting high speed detection of sensor array gathered data amount of having determined, High Speed Magnetic Flux Leakage detection technique are in high speed detection mistake
Affected by lift-off in journey and the problems such as based on demagnetization technology after the Magnetic Flux Leakage Inspecting of rail-defect detector car, should by Magnetic Flux Leakage Inspecting technology
For large-scale rail-defect detector car, effectively detect rail surface trauma at a high speed, improve the detection energy of large-scale rail-defect detector car
Power, preferably ensures rail track safety.Rail surface trauma High Speed Magnetic Flux Leakage detection technique based on large-scale rail-defect detector car can
Improve detection efficiency, increase accuracy of detection.
One of ordinary skill in the art will appreciate that realizing all or part of flow process in above-described embodiment equipment, Ke Yitong
Cross computer program to complete come the hardware to instruct correlation, described program can be stored in general computer read/write memory medium
In, this program is upon execution, it may include as the flow process of the embodiment of above-mentioned each equipment.Wherein, described storage medium can be magnetic
Dish, CD, read-only memory (read-only memory, rom) or random access memory (random access
Memory, ram) etc..
Those skilled in the art are it will also be appreciated that various functions that the embodiment of the present invention is listed are by hardware or soft
Part is realizing the design requirement depending on specific application and whole system.Those skilled in the art can be for every kind of specific
Application, it is possible to use various equipment realize described function, but this realization is understood not to protect beyond the embodiment of the present invention
The scope of shield.
Apply specific embodiment in the present invention principle of the present invention and embodiment are set forth, above example
Explanation be only intended to help understand equipment and its core concept of the present invention；Simultaneously for one of ordinary skill in the art,
According to the thought of the present invention, all will change in specific embodiments and applications, in sum, in this specification
Hold and should not be construed as limitation of the present invention.
Claims (12)
1. a kind of equipment of vehicle-mounted rail surface trauma Magnetic Flux Leakage Inspecting, is characterized in that, described equipment include excitation power supply,
One probe, the second probe, gate circuit and data collecting card,
Wherein, described excitation power supply, for the first described probe, the second probe power supply；
The first described probe includes the first magnetizator and the first sensor array；
The second described probe includes the second magnetizator and the second sensor array；
When up detection, described the first magnetizator, for magnetizing detected rail, described the first sensor array,
For picking up the magnetic leakage signal of described rail, described the second magnetizator, for carrying out demagnetization process to the rail after magnetization；
When descending detection, described the second magnetizator, for magnetizing detected rail, described the second sensor array,
For picking up the magnetic leakage signal of described rail, described the first magnetizator, for carrying out demagnetization process to the rail after magnetization；
Described gate circuit, for exporting trigger according to described magnetic leakage signal；
Described data collecting card, for the magnetic leakage signal according to described trigger collection.
2. equipment according to claim 1, is characterized in that, when up detection, described excitation power supply, for described
The first magnetizator unidirectional current is provided, provide alternating current to described second magnetizator.
3. equipment according to claim 1, is characterized in that, when descending detection, described excitation power supply, for described
The second magnetizator unidirectional current is provided, provide alternating current to described first magnetizator.
4. the equipment according to Claims 2 or 3, is characterized in that, the amplitude of described alternating current is more than described galvanic
Amplitude.
5. the equipment according to Claims 2 or 3, is characterized in that, described equipment also includes signal conditioning circuit, for right
Described magnetic leakage signal is amplified, Filtering Processing, and the magnetic leakage signal after processing is sent to gate circuit.
6. equipment according to claim 5, is characterized in that, described gate circuit includes:
Magnetic leakage signal receiver module, for receiving the magnetic leakage signal after described process；
Amplitude determining module, for determining the amplitude of the magnetic leakage signal after described process；
Threshold value acquisition module, for obtaining threshold value set in advance；
Whether judge module, for judging the amplitude of described magnetic leakage signal more than described threshold value；
Trigger output module, for when described judge module is judged as YES, exporting trigger.
7. equipment according to claim 6, is characterized in that, described equipment also includes:
Magnetic leakage signal processor, for receiving the magnetic leakage signal of described data collecting card collection, described magnetic leakage signal is carried out
Preserve.
8. a kind of system of vehicle-mounted rail surface trauma Magnetic Flux Leakage Inspecting, is characterized in that, described system includes inspection car, tested
Rail, head rod, the second connecting rod and the vehicle-mounted rail surface wound as described in claim 1-7 any one surveyed
Damage the equipment of Magnetic Flux Leakage Inspecting,
Wherein, described head rod, the steering for connecting described inspection car carries framework and described vehicle-mounted rail
First probe of the equipment of top surface trauma Magnetic Flux Leakage Inspecting；
The second described connecting rod, the steering for connecting described inspection car carries framework and described vehicle-mounted rail surface wound
Damage the second probe of the equipment of Magnetic Flux Leakage Inspecting.
9. system according to claim 8, is characterized in that, described system also includes:
First spring, is connected with described head rod, the described first probe, for controlling under described first probe
Pressure.
10. system according to claim 9, is characterized in that, described system also includes:
Second spring, is connected with the second described connecting rod, the described second probe, for controlling under described second probe
Pressure.
11. systems according to claim 10, is characterized in that, described system also includes:
First piston shoes, are arranged at the bottom of described first probe.
12. systems according to claim 11, is characterized in that, described system also includes:
Second piston shoes, are arranged at the bottom of described second probe.
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| CN111766292A (en) * | 2019-04-02 | 2020-10-13 | 四川大学 | Steel rail magnetic flux leakage detection device based on zero lift-off rolling magnetization |
| CN113155948A (en) * | 2021-04-19 | 2021-07-23 | 北京工业大学 | Curved surface detection micro-magnetic sensor based on conformal sliding shoes |
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