CN207268608U - Detector for train wheel pair size dynamic detection system - Google Patents
Detector for train wheel pair size dynamic detection system Download PDFInfo
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- CN207268608U CN207268608U CN201721327809.0U CN201721327809U CN207268608U CN 207268608 U CN207268608 U CN 207268608U CN 201721327809 U CN201721327809 U CN 201721327809U CN 207268608 U CN207268608 U CN 207268608U
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Abstract
The utility model discloses a kind of detector for train wheel pair size dynamic detection system, including the first detector and rail edge equipment, the first detector include：First light source, the first image capture device, rail edge equipment includes image analysis module, processor, in this case, by setting line source in the side of train driving track, and the light beam launched by the line source forms projection on wheel, and obtain two string of a musical instrument sections intersected with the tread contour line of wheel, by data analysis and process, the diameter of wheel, non-cpntact measurement compared with the prior art can be calculated, the system detectio precision higher of this case, measurement are more accurate.
Description
Technical field
Railroad vehicle testing equipment field is the utility model is related to, more particularly to the wheel of railcar train is detected
The measuring method of system and wheel wheel footpath.
Background technology
The measurement to the wheel wheel footpath of railcar train is usually online non-cpntact measurement at this stage, is surveyed compared to artificial
Amount, non-contact measurement have the advantages of fast measuring speed, high certainty of measurement.Existing non-contact measurement generally use laser
Displacement sensor and the matched mode of current vortex sensor and current vortex sensor is typically mounted under the track of railcar train
Side.As shown in Figure 1, wherein, B points are the position of laser displacement sensor installation, and C points are the position of current vortex sensor installation
Put, the girth of the contour line of wheel tread is the girth of wheel, and AO is the radius of wheel, and AB arrives for the laser displacement sensor
Vertical range between wheel tread, CD are the laser for the current vortex sensor to the vertical range between wheel tread, BC
For displacement sensor the distance between to the current vortex sensor, ∠ OBC are the setting angle of the laser displacement sensor, work as rail
Train at a high speed by the top of the current vortex sensor when, which is measured to wheel by laser displacement sensor
Vertical range AB between tread, by electric vortex sensor measuring current vortex sensor to the vertical range wheel tread
CD, after laser displacement sensor and current vortex sensor install, since the laser displacement sensor to the current vortex passes
The distance between sensor BC is fixed and known, and the extended line of line segment AB and line segment CD intersect at the center of circle O of wheel, laser position
The size of the setting angle ∠ OBC of displacement sensor is known, and therefore, the radius of wheel can be exported by following equation：
Since the tread of wheel is contacted with raceway surface rolling friction, tread is easily worn, tread contour line
On the distance of each point to wheel center differ, when actually measuring, the data measured by current vortex sensor are simply stepped on
Some point on facial contour line arrives the distance of the current vortex sensor, therefore the measuring method shown in attached drawing 1 can only carry out list
Point measurement, measured data are inaccurate, and then judge that the radius of wheel will be there are error, so as to cause measurement inaccurate；
Secondly as displacement sensor and current vortex sensor install in-orbit side, car body vibrations easily produce interference to measurement result, cause
Measurement accuracy is poor；Finally, due to current vortex sensor measures it using the principle of electromagnetic induction arrives the distance of tread, and due to electricity
Eddy current sensor is there are factors such as reaction speed, errors, and therefore, when starting measurement, the center of wheel is possible in detection line
The front or behind of OC, so as to cause measurement inaccurate.
The content of the invention
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of railcar train of accuracy of detection higher
Wheelset profile detecting system.
In order to realize the purpose of above-mentioned utility model, the utility model adopts the following technical solution：
A kind of detector for train wheel pair size dynamic detection system, the system include being arranged on the running rail side of train
First detector, first detector include：
First light source, for sending the structure light that two beams are parallel to each other to wheel to be measured, the structure light difference described in two
Form two projection lines being parallel to each other on the wheel to be measured, projection line described in two is stepped on wheel to be measured respectively
It is L that the contour line in face, which intersects to obtain length,1First string and length be L2The second string；
First image capture device, for gathering the image information of wheel to be measured；
The system further includes：
Image analysis module, is connected with the first image capture device signal, for analyzing the wheel to be measured
Image information, obtain L1、L2And the distance between second chord length of first string D；
Processor, is connected with the image analysis module signal, for according to L1、L2Wheel to be measured is calculated with the value of D
Radius R.
In above-mentioned technical proposal, it is preferred that the system further includes the rail being connected with first detector signal
Edge equipment, the image analysis module and processor are arranged in the rail edge equipment.
In above-mentioned technical proposal, it is preferred that extending direction of the projection line parallel to the running rail.
In above-mentioned technical proposal, it is preferred that first light source includes a line source, light splitting camera lens, the line
The light that light source is sent is divided into the structure light that two beams are parallel to each other by the light splitting camera lens.
In above-mentioned technical proposal, it is preferred that structure light described in two is along train driving rail）Extending direction form the
One view field, the detecting system, which is further included, to be connected with first detector signal and is used to trigger described first
The first sensor of detector, the first sensor are arranged on the upstream of first view field.
In above-mentioned technical proposal, it is preferred that the detecting system is further included to be connected with first detector signal
And for closing the second sensor of first detector, the second sensor is located at the downstream of first sensor.
In above-mentioned technical proposal, it is preferred that length of first view field along the extending direction of train driving track
Girth of the degree more than the wheel to be measured.
In above-mentioned technical proposal, it is preferred that the system includes the first detector described in a pair, and the described in a pair
One detector is oppositely arranged, and is located at the both sides of train driving track respectively.
In above-mentioned technical proposal, it is preferred that the first detector described in a pair is arranged on the both sides of train driving track
On ground.
In above-mentioned technical proposal, the structure light parallel to train running rail, and perpendicular to treating measuring car
The outer surface of wheel.
The utility model obtains following beneficial effect compared with prior art：In this case, by train driving track
Outside sets line source, and launches the light beam perpendicular to wheel surface by the line source, projection is formed on wheel, and obtain
Two string of a musical instrument sections intersected with the tread contour line of wheel, by data analysis and process, can calculate the diameter of wheel, compare
In the non-cpntact measurement of the prior art, the detecting system of this case is installed using rail mode is embraced, and is on the one hand not required pit base to apply
Work, nor affects on train operation in installation process, and on the other hand, the first detector can in real time be vibrated with ground, shaken so as to offset
The dynamic dynamic error brought, therefore accuracy of detection higher, measurement are more accurate.
Brief description of the drawings
Attached drawing 1 is the schematic diagram of the non-contact measurement of the prior art；
Attached drawing 2 is the testing principle schematic diagram of the utility model；
Attached drawing 3 is the close-up schematic view A of attached drawing 2；
Attached drawing 4 is the longitudinally cutting schematic diagram of attached drawing 2；
Attached drawing 5 is the projection line schematic diagram on the wheel to be measured of the utility model；
Wherein：100th, detecting system；11st, laser displacement sensor；12nd, current vortex sensor；2nd, the first detector；21、
First light source；211st, line source；212nd, it is divided camera lens；22nd, projection line；23rd, the first image capture device；3rd, running rail；4、
Wheel to be measured；41st, tread；411st, contour line；5th, rail edge equipment；51st, image analysis module.
Embodiment
To describe technology contents, construction feature, institute's reached purpose and effect of utility model in detail, below in conjunction with implementation
Example simultaneously coordinates attached drawing to be described in detail.Wherein, " longitudinal direction " being previously mentioned in the present embodiment is the extension up and down shown in attached drawing 2
Direction, " driving into end " is the left end of the running rail shown in attached drawing 2, and " rolling end away from " is the running rail shown in attached drawing 2
Right end.
Detector for train wheel pair size dynamic detection system 100, as shown in Figure 2, it includes being installed on the outside of train driving track 3
The first detector of a pair 2, rail edge equipment 5, first sensor, second sensor, the first detector 2 passes through with rail edge equipment 5
Signal connect, rail edge equipment 5 by the data collected and image information by network transmission to control centre, pass through control centre
Server and operating platform control vehicle.
Detecting system 100 includes the first detector 2 that a pair is separately positioned on the left and right sides of running rail 3, and a pair of the
One detector 2 is oppositely arranged, and is carried out at the same time detection to the wheel of train both sides respectively.Specifically, the first detector 2 includes：
First light source 21, the first image capture device 23（Not shown in figure）.
First light source 21 is used to send the structure light that two beams are parallel to each other to wheel 4 to be measured, this two beams structure light is along row
The direction of car running rail 3 extends and perpendicular to the outer surface of train wheel, in two beam of extending direction along train driving track 3
Structure light forms the first view field S1.When wheel 4 to be measured enters first view field S1When, what the first light source 21 was launched
Two-strip structure light will form Liang Tiao linear projections line 22 on the side surface of wheel 4 to be measured, this two projection lines 22 are mutually flat
Go and parallel with the extending direction of train driving track 3.
First image capture device 23 is capable of the image information of continuous several times collection wheel 4 to be measured, which includes
The information of two projection lines 22 and the tread contour line information of wheel to be measured.
Detecting system 100 further includes image analysis module 51, processor, database, image analysis module in the present embodiment
51 and processor integrate inside in-orbit edge equipment 5, rail edge equipment 5 is connected with the communication of control centre server.Image analysis module
51 are connected with 23 signal of the first image capture device, for analyzing the image information of wheel 4 to be measured, and by after analyzing and processing
The data result of image information is uploaded to the server of control centre（Such as the computer or server of train maintenance personnel
Deng）, processor is connected with 51 signal of image analysis module, and according to the image information that image analysis module 51 is fed back into line number
According to processing.
First sensor and second sensor are arranged on the ground between a pair of of running rail 3, and first sensor
It is arranged on the first view field S1Upstream（Train drives into direction）, second sensor is arranged on the downstream of first sensor（Row
Car rolls direction away from）, first sensor and second sensor are connected with 2 signal of the first detector, when first sensor detects
When train drives into, start the first detector 2 and work, second sensor is used in train all by the first view field S1It
Afterwards, the first detector 2 is closed.100 most of the time of detecting system is at " silence " state, only works as first sensor
When detecting wheel 4 to be measured, other modules such as the first light source 21 of the first detector 2, image capture device 23 just open work
Make）, such structure has the advantage that：System is in opening for a long time, and energy consumption necessarily increases, and system predominantly detects
Module（First light source 21, image capture device 23）It is closed, it is possible to reduce dust, rainwater in surrounding environment etc. are different
Influence of the thing to system, it is safeguarded and clean cost reduction, and accuracy of detection may remain in higher level.
In order to obtain the dimension data of whole wheel to be measured, the first view field S1Along the extension side of train driving track 3
To length be greater than the girth of wheel 4 to be measured.Furthermore it is possible to by setting between the first detector 2 and train driving track 3
Mounting distance so that the first view field S1Length reach the girths of 2 to 3 wheels 4 to be measured.
As shown in Figure 3, the first detector 2 includes mounting base and the housing that is rotatably arranged in the mounting base, and first
Detector 2 is fixedly mounted on ground or the foundation stone in the outside of train driving track 3 by mounting base, the first light source 21 and the first figure
As collecting device 23 is arranged in the housing, the angle of the emitting structural light of the first light source 21 can be adjusted by roll-shell
Degree, to adjust the first view field S1Vertical height so that when train enters view field S1When interior, two-strip structure luminous energy
It is enough that projection is formed on wheel 4 to be measured.First light source 21 includes a line source 211 and light splitting camera lens 212, the line source 211
Monochromatic infrared linear light source is selected, the advantage of doing so is that：Dust, dirty impurity are attached with even if being divided on camera lens 212 also not
Can influence the accuracy of detection of the first detector 2, and can avoid environment day-night change and strong sunshine under to system produce
Influence, ensure system worked well.It is mutual that the light launched by line source 211 by the light splitting camera lens 212 is divided into two beams
Parallel structure light, this two-strip structure light can form the first view field S along the extending direction of running rail 31.First figure
As collecting device 23 is located at the underface of the first light source, 23 preferred higher frequency camera of the first image capture device, when wheel 4 to be measured into
Enter first view field S1When interior, the first image capture device 23 can position the position that wheel 4 to be measured crosses, and quickly
The image information of wheel 4 to be measured is gathered, finally sends the image information of the wheel to be measured 4 collected to rail edge equipment 5 in real time.
As shown in Figure 4, wheel 4 to be measured travels on running rail 3, and enters the first view field S1When interior, first
First light source 21 of detector 2 launches two structure lights being parallel to each other, this two beams structure light is on the side surface of wheel 4 to be measured
Form about two projection lines being parallel to each other 22, the image letter of 23 Quick Acquisition of the first image capture device wheel 4 to be measured
The contour line 411 of the tread 41 of wheel 4 to be measured is completely covered in breath, the acquisition range of the first image capture device 23 so that first
Projection information of the light source 21 on wheel 4 to be measured can be collected completely.
As shown in Figure 5, after the first image capture device 23 collects the image information of wheel 4 to be measured, this image is believed
Breath is sent to rail edge equipment 5, and image is analyzed and processed by the image analysis module 51 in rail edge equipment 5 and obtains following number
According to：Two projection lines 22 intersect with the contour line 411 of tread 41 and form first string line segment A parallel up and down1N1With second string of a musical instrument
Section A2N2, wherein, first string line segment A1N1With the second string of a musical instrument section A2N2Length be respectively L1And L2, first string line segment A1N1With
Two string of a musical instrument section A2N2Between spacing be D, and the characteristic of two-strip structure light that the size of D is only launched with the first light source 21 has
Close（It is i.e. only related with the setting angle of the first detector 2, installation site, after installing and adjust due to the first detector 2, D
Size also determine that, be a steady state value.）, the girth of the contour line 411 of the tread 41 of this wheel 4 to be measured is the week of wheel
It is long, O1A1And O1A2Value it is equal and represent the radius R of wheel 4 to be measured, in triangle O1A1B1With triangle O1A2C1In, lead to
The value of radius R of wheel 4 to be measured can be calculated by crossing Pythagorean theorem, it meets below equation：
。
Since tread 411 is contacted with 3 direct rolling friction of running rail, 41 surface of tread necessarily leads to abrasion, therefore, from
Wheel 4 to be measured drives into the first view field S1Inside to rolling the first view field S away from1Outside, two knots launched by the first light source 21
Structure light intersects with the contour line 411 of tread 41 can form multigroup such first and second string of a musical instrument section, therefore, more according to what is collected
First and second string of a musical instrument section of group, can calculate the value of the radius R of multigroup wheel to be measured 4, may finally detect wheel 4 to be measured
The abrasion condition of tread 41, the degree of wear of the wheel tread gone out further according to system detectio safeguard wheel, ensure rail
The safe operation of train.
Above-described embodiment is only the technical concepts and features for illustrating the utility model, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement according to this, the scope of protection of the utility model can not be limited with this.
All equivalent change or modifications made according to the utility model spirit, should be covered within the scope of the utility model.
Claims (10)
- A kind of 1. detector for train wheel pair size dynamic detection system, it is characterised in that：The system includes the traveling for being arranged on train Track（3）First detector of side（2）, first detector（2）Including：First light source（21）, for sending the structure light that two beams are parallel to each other to wheel to be measured, the structure light difference described in two In the wheel to be measured（4）Two projection lines being parallel to each other of upper formation（22）, the projection line described in two（22）Respectively with The tread of wheel to be measured（41）Contour line（411）It is intersecting that to obtain length be L1First string and length be L2The second string；First image capture device（23）, for gathering wheel to be measured（4）Image information；The system further includes：Image analysis module（51）, with first image capture device（23）Signal connects, described to be measured for analyzing Wheel（4）Image information, obtain L1、L2And the distance between first string and the second chord length D；Processor, with the image analysis module（51）Signal connects, for according to L1、L2Wheel to be measured is calculated with the value of D （4）Radius R.
- 2. detector for train wheel pair size dynamic detection system according to claim 1, it is characterised in that：The system further includes With first detector（2）The rail edge equipment of signal connection（5）, the image analysis module（51）Set with processor In the rail edge equipment（5）In.
- 3. detector for train wheel pair size dynamic detection system according to claim 1, it is characterised in that：The projection line（22） Parallel to the running rail（3）Extending direction.
- 4. detector for train wheel pair size dynamic detection system according to claim 3, it is characterised in that：First light source （21）Including a line source（211）, light splitting camera lens（212）, the line source（211）The light sent is by point Light microscopic head（212）It is divided into the structure light that two beams are parallel to each other.
- 5. detector for train wheel pair size dynamic detection system according to claim 3, it is characterised in that：Structure light described in two Along train driving track（3）Extending direction formed the first view field（S1）, the detecting system further include with it is described The first detector（2）Signal connects and is used to trigger first detector（2）First sensor, described first pass Sensor is arranged on first view field（S1）Upstream.
- 6. detector for train wheel pair size dynamic detection system according to claim 5, it is characterised in that：The detecting system is also Including with first detector（2）Signal connects and is used to close first detector（2）Second sensor, institute The second sensor stated is located at the downstream of first sensor.
- 7. detector for train wheel pair size dynamic detection system according to claim 5, it is characterised in that：First projected area Domain（S1）Along train driving track（3）The length of extending direction be more than the wheel to be measured（4）Girth.
- 8. detector for train wheel pair size dynamic detection system according to claim 1, it is characterised in that：The system includes one To first detector（2）, the first detector described in a pair（2）It is oppositely arranged, and is located at train driving track respectively （3）Both sides.
- 9. detector for train wheel pair size dynamic detection system according to claim 8, it is characterised in that：The first inspection described in a pair Survey device（2）It is arranged on train driving track（3）Both sides ground on.
- 10. detector for train wheel pair size dynamic detection system according to claim 1, it is characterised in that：The structure light is put down Go in the running rail of train, and perpendicular to the outer surface of wheel to be measured.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668515A (en) * | 2017-10-16 | 2019-04-23 | 苏州华兴致远电子科技有限公司 | Detector for train wheel pair size dynamic detection system and detection method |
| CN111595252A (en) * | 2020-05-21 | 2020-08-28 | 哈尔滨市科佳通用机电股份有限公司 | Axle size dynamic detection system based on laser measurement technology |
| CN111879254A (en) * | 2020-07-31 | 2020-11-03 | 湖北国铁轨道交通研究院有限公司 | Method, device, equipment and medium for processing track measurement data |
| CN112344899A (en) * | 2021-01-11 | 2021-02-09 | 中车常州车辆有限公司 | Method for detecting three-dimensional contour of tread of wheel set without centering |
| CN112611329A (en) * | 2020-12-25 | 2021-04-06 | 江苏集萃智能光电系统研究所有限公司 | Train wheel set size measurement case |
-
2017
- 2017-10-16 CN CN201721327809.0U patent/CN207268608U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668515A (en) * | 2017-10-16 | 2019-04-23 | 苏州华兴致远电子科技有限公司 | Detector for train wheel pair size dynamic detection system and detection method |
| CN109668515B (en) * | 2017-10-16 | 2024-04-05 | 苏州华兴致远电子科技有限公司 | Train wheel set size dynamic detection system and detection method |
| CN111595252A (en) * | 2020-05-21 | 2020-08-28 | 哈尔滨市科佳通用机电股份有限公司 | Axle size dynamic detection system based on laser measurement technology |
| CN111879254A (en) * | 2020-07-31 | 2020-11-03 | 湖北国铁轨道交通研究院有限公司 | Method, device, equipment and medium for processing track measurement data |
| CN112611329A (en) * | 2020-12-25 | 2021-04-06 | 江苏集萃智能光电系统研究所有限公司 | Train wheel set size measurement case |
| CN112344899A (en) * | 2021-01-11 | 2021-02-09 | 中车常州车辆有限公司 | Method for detecting three-dimensional contour of tread of wheel set without centering |
| CN112344899B (en) * | 2021-01-11 | 2021-03-30 | 中车常州车辆有限公司 | Method for detecting three-dimensional contour of tread of wheel set without centering |
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