CN108680640A - The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal - Google Patents
The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal Download PDFInfo
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- CN108680640A CN108680640A CN201810629610.6A CN201810629610A CN108680640A CN 108680640 A CN108680640 A CN 108680640A CN 201810629610 A CN201810629610 A CN 201810629610A CN 108680640 A CN108680640 A CN 108680640A
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- rail
- adjustable plate
- castor
- detection trolley
- detection
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- 238000001514 detection method Methods 0.000 title claims abstract description 65
- 235000004443 Ricinus communis Nutrition 0.000 claims abstract description 27
- 230000005284 excitation Effects 0.000 claims abstract description 19
- 238000013016 damping Methods 0.000 claims abstract description 15
- 238000007689 inspection Methods 0.000 claims abstract description 14
- 230000005389 magnetism Effects 0.000 claims abstract description 9
- 230000005415 magnetization Effects 0.000 claims description 10
- 240000000528 Ricinus communis Species 0.000 claims description 4
- 230000005526 G1 to G0 transition Effects 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005347 demagnetization Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
Include hand propelled inspection car, first to fourth position adjustable plate, head rod, the second connecting rod, the first damping spring, the second damping spring, the first detection trolley and the second detection trolley the invention discloses a kind of Rail Surface flaw detection signal pickup assembly for eliminating leakage field based on magnetic reversal.First to fourth position adjustable plate is arranged in parallel in hand propelled inspection car for detecting the side of rail, is equipped with arc chute thereon, is equipped with the locking structure being equipped on sliding block and sliding block for locking or unclamping on the chute sliding block in sliding slot.The first to the second connecting rod is connected respectively the sliding block on first to fourth position adjustable plate.The first to the second detection trolley includes shell, yoke, excitation coil, Hall sensor array, the first castor and the second castor.The present invention can detect after rail remanent magnetism return to its be detected before initial value, cost is relatively low, and efficiency is higher, is easily assembled to.
Description
Technical field
The present invention relates to measuring technique and instrument field more particularly to a kind of Rail Surfaces for eliminating leakage field based on magnetic reversal
Flaw detection signal pickup assembly.
Background technology
In steel rail defect detection, Electromagnetic Testing Technology is fast with detection speed, high sensitivity, has obtained relatively broad answer
With.However when actual motion, electromagnetic detection inspection car easily makes rail generate nothing when passing through rail since electromagnetic excitation influences
The magnetic field that method eliminates.The magnetic field can generate interference to the operation of train, and serious accident is generated when serious.Therefore, it is necessary to one
Kind can carry out rail after electromagnetic detection inspection car is by rail the device of demagnetization, be eliminated to rail magnetic field, to
Enable rail safe operation.
Invention content
The technical problem to be solved by the present invention is to for the defect involved by background technology, provide a kind of based on magnetic reversal
The Rail Surface flaw detection signal pickup assembly for eliminating leakage field solves electromagnetism inspection inspection car and passes through generation rail remanent magnetism after rail
Problem.
The present invention uses following technical scheme to solve above-mentioned technical problem
The Rail Surface flaw detection signal pickup assembly that leakage field is eliminated based on magnetic reversal, including hand propelled inspection car, first to fourth
Position adjustable plate, head rod, the second connecting rod, the first damping spring, the second damping spring, the first detection trolley and second
Detect trolley；
First to fourth position adjustable plate is arranged in parallel in the hand propelled inspection car for detecting the side of rail, and first
It is equipped with arc chute on to the 4th position adjustable plate, is equipped on sliding block and sliding block in sliding slot and is equipped with for sliding block to exist
The locking structure for locking or unclamping on sliding slot；
The both ends of the head rod correspond to stationary phase with the sliding block on first position adjustable plate, second position adjustable plate respectively
Even, the both ends of the second connecting rod are corresponding with the sliding block on the third place adjustable plate, the 4th position adjustable plate respectively to be fixedly linked；
First damping spring, the second damping spring one end respectively with head rod, the midpoint pair of the second connecting rod
It should be fixedly linked, the other end is fixedly linked at the top of the first detection trolley, the second detection trolley respectively；
The first to fourth detection trolley includes shell, yoke, excitation coil, Hall sensor array, the first castor and the
Two castors；
First castor, the second castor are all made of wide wheel, are separately positioned on the lower face of the shell so that the shell energy
It is enough to be rolled on rail to be detected；
The yoke, excitation coil, Hall sensor array are arranged in the shell, wherein the yoke is in inverted U
Shape, on it, the excitation coil is connected with external power supply for the excitation coil winding, and the yoke is used for logical in excitation coil
When electric magnetic signal is sent out towards rail to be detected；The Hall sensor array is arranged in the yoke and the rail is flat
Row, for collecting magnetic leakage signal；
By adjusting the position of first to fourth adjustable plate top shoe, enable to the first detection trolley, the second detection small
The first castor, the second castor of vehicle are fitted in the upper surface of rail；The direction of magnetization of yoke and institute in the second detection trolley
The direction of magnetization for stating yoke in the first detection trolley is opposite, wherein and the first detection trolley is used to acquire Rail Surface flaw detection signal,
The second detection trolley is for so that the remanent magnetism of the rail after the first detection trolley detection returns to its initial number before being detected
Value.
As the further side of optimization of Rail Surface flaw detection signal pickup assembly for eliminating leakage field the present invention is based on magnetic reversal
Case, first castor, the second castor are using heat-resisting wide wheel made of polyurethane.
The present invention has the following technical effects using above technical scheme is compared with the prior art：
The present invention is easily achieved the remanent magnetism generated due to Magnetic Flux Leakage Inspecting to eliminating Rail Surface.According to magnetic flux leakage theory, the first inspection
The operating distance for surveying trolley and rail is no more than 5mm, since magnetization can make rail intrinsic inductance transient rise, and according to magnetic
Stagnant phenomenon, remanent magnetism does not return to initial value in rail.Existing standard can not judge that remanent magnetism influences the use of rail, so needing
A yoke opposite with the direction of magnetization is added to carry out magnetic reversal in the turntable other side, to make remanent magnetism return to initial value.The
One, the second detection trolley is front and back places the normal work that will not influence each other.And cost is relatively low, efficiency is higher, is easily assembled to, rich
It is innovative.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the first detection trolley and the matched structural schematic diagram of sliding rail in the present invention；
Fig. 3 is the external structure schematic diagram of present invention detection trolley；
Fig. 4 is yoke, excitation coil, the matched structural schematic diagram of Hall sensor array in present invention detection trolley.
In figure, the wheel of 1- inspection cars, the steelframe of 2- inspection cars, the positions 3- adjustable track, 4- head rods, 5- dampings
Spring, 6- first detect trolley, and 7- first detects the shell of trolley, and the first castors of 8-, 9- yokes, 10- excitation coils, 11- is suddenly
That sensor array.
Specific implementation mode
Technical scheme of the present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, the invention discloses a kind of Rail Surface flaw detection signal pickup assembly for eliminating leakage field based on magnetic reversal, packet
Inspection car containing hand propelled, first to fourth position adjustable plate, head rod, the second connecting rod, the first damping spring, second subtract
Shake spring, the first detection trolley and the second detection trolley；
First to fourth position adjustable plate is arranged in parallel in the hand propelled inspection car for detecting the side of rail, and first
It is equipped with arc chute on to the 4th position adjustable plate, is equipped on sliding block and sliding block in sliding slot and is equipped with for sliding block to exist
The locking structure for locking or unclamping on sliding slot；
The both ends of the head rod correspond to stationary phase with the sliding block on first position adjustable plate, second position adjustable plate respectively
Even, the both ends of the second connecting rod are corresponding with the sliding block on the third place adjustable plate, the 4th position adjustable plate respectively to be fixedly linked；
First damping spring, the second damping spring one end respectively with head rod, the midpoint pair of the second connecting rod
It should be fixedly linked, the other end is fixedly linked at the top of the first detection trolley, the second detection trolley respectively；
The first to fourth detection trolley includes shell, yoke, excitation coil, Hall sensor array, the first castor and the
Two castors；
First castor, the second castor are all made of wide wheel, are separately positioned on the lower face of the shell so that the shell energy
It is enough to be rolled on rail to be detected；
The yoke, excitation coil, Hall sensor array are arranged in the shell, wherein the yoke is in inverted U
Shape, on it, the excitation coil is connected with external power supply for the excitation coil winding, and the yoke is used for logical in excitation coil
When electric magnetic signal is sent out towards rail to be detected；The Hall sensor array is arranged in the yoke and the rail is flat
Row, for collecting magnetic leakage signal；
By adjusting the position of first to fourth adjustable plate top shoe, enable to the first detection trolley, the second detection small
The first castor, the second castor of vehicle are fitted in the upper surface of rail；The direction of magnetization of yoke and institute in the second detection trolley
The direction of magnetization for stating yoke in the first detection trolley is opposite, wherein and the first detection trolley is used to acquire Rail Surface flaw detection signal,
The second detection trolley is for so that the remanent magnetism of the rail after the first detection trolley detection returns to its initial number before being detected
Value.
First castor, the second castor are using heat-resisting wide wheel made of polyurethane.
When work, the first detection trolley and the second detection trolley is made one in front and one in back to cover rail by position adjustable track
Top surface, the direction of magnetization of the direction of magnetization of yoke and the first detection trolley yoke is opposite at runtime for the second detection trolley.The first,
Second damping spring can preferably eliminate influence of the vibration to lift-off value.From trolley side extracting power supply cord ground wire and signal
Line, the Hall sensor array for the first detection trolley, the second detection trolley provide 5V voltages, and each trolley that detects acquires X, Y,
The signal on each four tunnel in tri- directions Z.Since Hall sensor has the DC component of 2.5V, and collected useful signal is very micro-
It is weak, need additional hardware blocking amplifying circuit to handle signal.After external hardware processing of circuit, acquired by capture card
Into host computer.Using MATLAB processing, three-dimensional imaging more can clearly observe position and the distribution of defect.
The present invention can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.On the contrary,
These embodiments are provided so that the disclosure is thorough and complete, and the model for the present invention being given full expression to those skilled in the art
It encloses.In the accompanying drawings, for the sake of clarity it is exaggerated component.
Claims (2)
- The signal pickup assembly 1. Rail Surface for being eliminated leakage field based on magnetic reversal is detected a flaw, which is characterized in that detect a flaw comprising hand propelled Vehicle, first to fourth position adjustable plate, head rod, the second connecting rod, the first damping spring, the second damping spring, first Detect trolley and the second detection trolley；First to fourth position adjustable plate is arranged in parallel in the hand propelled inspection car for detecting the side of rail, and first It is equipped with arc chute on to the 4th position adjustable plate, is equipped on sliding block and sliding block in sliding slot and is equipped with for sliding block to exist The locking structure for locking or unclamping on sliding slot；The both ends of the head rod correspond to stationary phase with the sliding block on first position adjustable plate, second position adjustable plate respectively Even, the both ends of the second connecting rod are corresponding with the sliding block on the third place adjustable plate, the 4th position adjustable plate respectively to be fixedly linked；First damping spring, the second damping spring one end respectively with head rod, the midpoint pair of the second connecting rod It should be fixedly linked, the other end is fixedly linked at the top of the first detection trolley, the second detection trolley respectively；The first to fourth detection trolley includes shell, yoke, excitation coil, Hall sensor array, the first castor and the Two castors；First castor, the second castor are all made of wide wheel, are separately positioned on the lower face of the shell so that the shell energy It is enough to be rolled on rail to be detected；The yoke, excitation coil, Hall sensor array are arranged in the shell, wherein the yoke is in inverted U Shape, on it, the excitation coil is connected with external power supply for the excitation coil winding, and the yoke is used for logical in excitation coil When electric magnetic signal is sent out towards rail to be detected；The Hall sensor array is arranged in the yoke and the rail is flat Row, for collecting magnetic leakage signal；By adjusting the position of first to fourth adjustable plate top shoe, enable to the first detection trolley, the second detection small The first castor, the second castor of vehicle are fitted in the upper surface of rail；The direction of magnetization of yoke and institute in the second detection trolley The direction of magnetization for stating yoke in the first detection trolley is opposite, wherein and the first detection trolley is used to acquire Rail Surface flaw detection signal, The second detection trolley is for so that the remanent magnetism of the rail after the first detection trolley detection returns to its initial number before being detected Value.
- The signal pickup assembly 2. Rail Surface according to claim 1 for being eliminated leakage field based on magnetic reversal is detected a flaw, feature It is, first castor, the second castor are using heat-resisting wide wheel made of polyurethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629610.6A CN108680640A (en) | 2018-06-19 | 2018-06-19 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810629610.6A CN108680640A (en) | 2018-06-19 | 2018-06-19 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
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| Publication Number | Publication Date |
|---|---|
| CN108680640A true CN108680640A (en) | 2018-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810629610.6A Pending CN108680640A (en) | 2018-06-19 | 2018-06-19 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166930A (en) * | 2021-12-07 | 2022-03-11 | 威海华菱光电股份有限公司 | Steel cord fabric detection and calibration device and detection and calibration method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156363A (en) * | 2000-11-20 | 2002-05-31 | Tokyo Gas Co Ltd | Leakage flux flaw detecting method for conduit |
| CN101651006A (en) * | 2009-08-07 | 2010-02-17 | 合肥中大检测技术有限公司 | Demagnetization method of large-scale ferromagnetic pipe fitting and magnetic-sensitive sensor |
| CN102445495A (en) * | 2011-09-28 | 2012-05-09 | 上海铁路局科学技术研究所 | Automatic dual-rail flaw detection system |
| CN202693523U (en) * | 2012-08-07 | 2013-01-23 | 安庆市安科精机有限责任公司 | Demagnetizer of oil casing pipe magnetic flux leakage diagnostic machine |
| CN105946878A (en) * | 2016-04-27 | 2016-09-21 | 上海市东方海事工程技术有限公司 | Double-rail flaw detecting car for subway steel rails |
| CN106066363A (en) * | 2016-07-28 | 2016-11-02 | 中国铁道科学研究院金属及化学研究所 | A kind of railroad turnout steel rail eddy current conformal detection device |
| CN106353397A (en) * | 2016-09-06 | 2017-01-25 | 中国铁道科学研究院 | Vehicular magnetic flux leakage detecting equipment and system for steel rail surface damage |
| CN206292206U (en) * | 2016-11-29 | 2017-06-30 | 张家港思振电子科技有限公司 | A kind of automobile-used detection probe of rail examination based on Magnetic Flux Leakage Inspecting |
| CN208383787U (en) * | 2018-06-19 | 2019-01-15 | 南京航空航天大学 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
-
2018
- 2018-06-19 CN CN201810629610.6A patent/CN108680640A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002156363A (en) * | 2000-11-20 | 2002-05-31 | Tokyo Gas Co Ltd | Leakage flux flaw detecting method for conduit |
| CN101651006A (en) * | 2009-08-07 | 2010-02-17 | 合肥中大检测技术有限公司 | Demagnetization method of large-scale ferromagnetic pipe fitting and magnetic-sensitive sensor |
| CN102445495A (en) * | 2011-09-28 | 2012-05-09 | 上海铁路局科学技术研究所 | Automatic dual-rail flaw detection system |
| CN202693523U (en) * | 2012-08-07 | 2013-01-23 | 安庆市安科精机有限责任公司 | Demagnetizer of oil casing pipe magnetic flux leakage diagnostic machine |
| CN105946878A (en) * | 2016-04-27 | 2016-09-21 | 上海市东方海事工程技术有限公司 | Double-rail flaw detecting car for subway steel rails |
| CN106066363A (en) * | 2016-07-28 | 2016-11-02 | 中国铁道科学研究院金属及化学研究所 | A kind of railroad turnout steel rail eddy current conformal detection device |
| CN106353397A (en) * | 2016-09-06 | 2017-01-25 | 中国铁道科学研究院 | Vehicular magnetic flux leakage detecting equipment and system for steel rail surface damage |
| CN206292206U (en) * | 2016-11-29 | 2017-06-30 | 张家港思振电子科技有限公司 | A kind of automobile-used detection probe of rail examination based on Magnetic Flux Leakage Inspecting |
| CN208383787U (en) * | 2018-06-19 | 2019-01-15 | 南京航空航天大学 | The Rail Surface flaw detection signal pickup assembly of leakage field is eliminated based on magnetic reversal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114166930A (en) * | 2021-12-07 | 2022-03-11 | 威海华菱光电股份有限公司 | Steel cord fabric detection and calibration device and detection and calibration method |
| CN114166930B (en) * | 2021-12-07 | 2024-03-01 | 威海华菱光电股份有限公司 | Wirecord fabric detection and calibration device and detection and calibration method |
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Application publication date: 20181019 |
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