CN208872534U - A kind of vehicular bow net hard spot shock testing device - Google Patents
A kind of vehicular bow net hard spot shock testing device Download PDFInfo
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- CN208872534U CN208872534U CN201821126795.0U CN201821126795U CN208872534U CN 208872534 U CN208872534 U CN 208872534U CN 201821126795 U CN201821126795 U CN 201821126795U CN 208872534 U CN208872534 U CN 208872534U
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- 238000009434 installation Methods 0.000 claims description 6
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- 238000004445 quantitative analysis Methods 0.000 abstract description 3
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- 238000010891 electric arc Methods 0.000 description 6
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Abstract
The utility model provides a kind of vehicular bow net hard spot shock testing device, including roof image collecting device, interior data analysis set-up and terminal Real-time Alarm device, it is wirelessly connected or is electrically connected between roof image collecting device and interior data analysis set-up and terminal Real-time Alarm device；Roof image collecting device includes high-speed camera, bloom light compensating apparatus and photosensitive material；High-speed camera is installed on the car body, and bloom light compensating apparatus is mounted on the side of high-speed camera, and photosensitive material is mounted in pantograph.The utility model device energy Real-time and Dynamic Detection train hard spot impact phenomenon that bow net cooperates during normal operation, and quantitative analysis its hard spot acceleration；It instructs relevant departments to handle in time, reduces accident between pantograph.
Description
Technical field
The utility model belongs to carbody inspection technical field, and in particular to a kind of vehicular bow net hard spot impulse detection dress
It sets.
Background technique
When locomotive operation, it is hard on the contact surface of pantograph and contact line, at contact force suddenly change to be known as contact net
Point.Hard spot is one of the principal element for influencing pantograph contact line relation, and main harm has mechanical wounding and electric arc injury.Mechanical wounding is main
Will cause pantograph, contact net is slightly damaged and is scratched, the normal contact destroyed between bow net takes stream, enlarged contact net conducting wire with
The abrasion of pantograph pan.And electric arc injury shows as the high-temperature electric arc of the offline moment generation of bow net, will make to pantograph collector head
At spot corrosion and vaporization, while contact net will cause local annealing, cause to be easy because of tension because of the biggish internal stress of high temperature generation
And it breaks.Therefore, the generation of hard spot can be to pantograph, contact net, locomotive electric apparatus, traction electric machine, tractive transformer and entire machine
Vehicle power supply system damages
Current existing detection means is mainly contact measurement, is installed on pantograph spy by pressure and acceleration transducer
Positioning is set, in bow net engagement process real-time detection go out pantograph by the acceleration on electric situation and different directions.With this reality
With Novel photo than being all by vehicle-mounted Real-time and Dynamic Detection, output item is all to reflect bow net indirectly by pantograph operating status
Hard spot impact phenomenon when cooperation, quantitative analysis and hard spot impact acceleration.But existing detection means has the disadvantage in that 1, exists
Security risk: the detection means is mainly contact measurement, it is necessary to sensor is installed on pantograph specific position, due to by electricity
Bow is critical component in vehicle-mounted bow net engagement process, necessarily brings security risk.2, poor work stability: pantograph-catenary current collection process
In, DC1500V voltage is had in pantograph, it is necessary to do high-voltage isulation processing and increase electromagnetism anti-interference ability, increase peace
Fill technique requirement and sensor performance requirement.3, testing conditions are limited: being influenced by the above two o'clock, present detection device can only pacify
The round-the-clock real-time detection of operation train progress cannot be installed on loaded on security implication on experiment train, is related to；4, deviate practical work
Condition: the prior art can only be installed on experiment train and detect, and not be inconsistent with actual condition, and really hard spot impact phenomenon betides reality
During border train carrying operation.
Summary of the invention
In view of this, the utility model mainly solves problem brought by existing detection mode, pass through the utility model
The device energy Real-time and Dynamic Detection train hard spot impact phenomenon that bow net cooperates during normal operation, and quantitative analysis its hard spot
Acceleration.It instructs relevant departments to handle in time, reduces accident between pantograph.
A kind of vehicular bow net hard spot shock testing device, including roof image collecting device, interior data analysis set-up
With terminal Real-time Alarm device, nothing between roof image collecting device and interior data analysis set-up and terminal Real-time Alarm device
Line connection or electrical connection；Roof image collecting device includes high-speed camera, bloom light compensating apparatus and photosensitive material；High-speed camera
Machine is installed on the car body, and bloom light compensating apparatus is mounted on the side of high-speed camera, and photosensitive material is mounted in pantograph.
Preferably, photosensitive material fixation is pasted onto pantograph.
Preferably, high-speed camera is connect by specific fixing seat with rigidity of vehicle body with bloom light compensating apparatus.
The quantity of preferred high-speed camera and the bloom light compensating apparatus is 2, respectively the first high-speed camera and
Second high-speed camera, the first bloom light compensating apparatus and the second bloom light compensating apparatus；First high-speed camera and the first bloom are mended
The side of photosensitive material is arranged in electro-optical device, and the another of photosensitive material is arranged in the second bloom light compensating apparatus in the second high-speed camera
Side.
Preferably, interior data analysis set-up includes location tracking device, special-purpose imageprocessor and vehicle bottom vibration compensation part；
Location tracking device and high-speed camera mechatronics or wireless connection；Special-purpose imageprocessor and high-speed camera mechatronics are wireless
Connection；Vehicle bottom vibration compensation part is mounted on the vehicle bottom of car body, is electrically connected respectively with location tracking device, special-purpose imageprocessor or nothing
Line connection.
Preferably, high-speed camera, bloom light compensating apparatus, location tracking device, special-purpose imageprocessor and the vibration of vehicle bottom are mended
It repays part and is provided with self-checking unit, self-checking unit is connected with terminal Real-time Alarm device.
Using a kind of vehicular bow net hard spot shock testing device and its detection method of the utility model, there are following excellent
Point: 1, round-the-clock real-time detection, since utility model device uses non-contact detection mode, not by being installed under specific environment
Technique limitation.2, detection accuracy is high, and utility model device uses the high frame rate camera of high camera, and minimum resolution reaches
0.5mm.3, close to fact, utility model device is installed on normal operation carrying train detection environment, in really operation ring
Real-time detection in border more can really reflect that the hard spot impact phenomenon under train operation fact, analysis real result are reliable.4, it installs
Debugging is convenient, practical；Since utility model device is small in size, the vehicle-mounted installation and debugging of convinent car can be widely applied.
Detailed description of the invention
Fig. 1 is roof image collecting device schematic diagram provided by the utility model preferred embodiment.
Fig. 2 is the pantograph stress diagram of the utility model.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
Referring to Fig. 1, a kind of vehicular bow net hard spot shock testing device, including roof image collecting device 100, car
Data analysis set-up and terminal Real-time Alarm device, roof image collecting device 100 and interior data analysis set-up and terminal are real
When alarm device between be wirelessly connected or electrical connection；Roof image collecting device 100 includes high-speed camera 40, bloom light filling dress
Set 50 and photosensitive material 10；High-speed camera 40 is mounted on car body 30, and bloom light compensating apparatus 50 is mounted on high-speed camera 40
Side, can obtain appropriate exposure in 10 each section details of photosensitive material in pantograph 20, shoot apparent.It is high
Fast video camera 40 is rigidly connected with bloom light compensating apparatus 50 by specific fixing seat and car body 30, is met in car body operational process
Vibratory impulse requirement；Photosensitive material 10 is fixed in pantograph 20 by specific bonding method, meets 20 operational process of pantograph
In be hit the influence of power.High-speed camera 40 and 50 installation site of highlighted light compensating apparatus can be according to the need of different car body projects
It asks and specific customization, adapts to most of installation requirements.
Photosensitive material 10 is fixed in pantograph 20 by specific bonding method referring to FIG. 1-2,；High-speed camera 40
It is rigidly connected with bloom light compensating apparatus 50 by specific fixing seat and car body 30, high-speed camera 40 and bloom light compensating apparatus 50
Quantity is 2, respectively the first high-speed camera and the second high-speed camera, the first bloom light compensating apparatus and the second bloom light filling
Device；First high-speed camera and the first bloom light compensating apparatus are arranged in the side of photosensitive material 10, the second high-speed camera with
The other side of photosensitive material is arranged in second bloom light compensating apparatus.High-speed camera and height is respectively set in the two sides of photosensitive material 10
Light light compensating apparatus, the variation that photosensitive material 10 can be captured from each orientation multi-angle as needed can be in other angles
Increase the quantity of high-speed camera and the quantity of bloom light compensating apparatus, the position for more comprehensively capturing photosensitive material 10 becomes
Change, to more comprehensively determine the change in location of pantograph 20 in all directions.
Interior data analysis set-up includes position tracking device, special image processing unit and the vibration of vehicle bottom referring to FIG. 1-2,
Dynamic compensation device；20 position of pantograph described in position tracking device real-time tracing is compared by special image processing unit by electricity
Bend 20 front and back picture positions, calculate the displacement in all directions, carries out position compensation in conjunction with vehicle bottom vibration compensation device, pass through
Multi-dimensional data convergence analysis finally calculates hard spot impact acceleration.Roof image collecting device is pressed under normal operation
The change in location of fixed frame per second high speed acquisition photosensitive material in all directions, is uploaded at interior data by dedicated data line
Module is managed, position tracking device passes through location tracking algorithm, 20 position of real-time tracing pantograph；In special image processing unit
Special image processing software is compared by 20 picture position of front and back pantograph, calculates the displacement in all directions；In conjunction with vehicle
The 30 sway compensating device of car body of bottom vibration compensation device carries out position compensation, final to count by multi-dimensional data convergence analysis
Calculate hard spot impact acceleration.
High-speed camera 40, bloom light compensating apparatus 50, position tracking device, special image processing unit referring to FIG. 1-2,
It is provided with self-checking function with vehicle bottom vibration compensation device, abnormal operation and testing result convey terminal to accuse in real time in time
Alarm device.The utility model apparatus system mainly uses unattended design concept, operates under normal circumstances without personnel,
And each module of the device has self-checking function, and abnormal operation and testing result upload to terminal Real-time Alarm dress in time
The alarm device set, alarm device pass through the data set, different alarms are issued for different abnormal conditions, so that alert
It reports recipient that can judge alarm types and abnormal position at the first time, faster more preferably handles abnormal conditions well, so that entire dress
Set the work more orderly with car body 30.
Testing principle of the invention: hard spot is broadly divided into three kinds, is " intrinsic hard spot " respectively, " elastic hard spot ", " speed is hard
Point "；Producing reason is respectively as follows:
Intrinsic hard spot: in contact net contact, differentiation insulator, positioning device and mid point anchor etc., contact line is flexible
Property be deteriorated or formed lumped mass and generate intrinsic hard spot.
Elastic hard spot: pantograph 20 or contact line are destroyed the rapport of the two by certain excitation, and then by electricity
It is generated between bow 20 and contact line and collides and generate impact force, to form elastic hard spot.
Speed hard spot: locomotive speed reaches certain value (when such as speed is greater than 160km/h), will generate at each anchor point
Impact to pantograph 20, and then form speed hard spot.
But either which kind of hard spot, their concentrated expression are that the contact force between contact line and pantograph 20 generates greatly
Mutation, and then according to Newton's second law, the instantaneous acceleration of pantograph 20 will also generate big mutation, and pantograph 20 is first
Beginning speed will be much smaller than this impact acceleration, so the spatial position of pantograph 20 will also generate very greatly in a short period of time
Variation.Resultant force size suffered by the mutation namely pantograph 20 of bow net contact power is directly taken the form of when hard spot occurs
Increase suddenly, this will lead to pantograph 20 and generates very big displacement in a short period of time in vertical direction, and then can be
Visually identified.This is also based on the basic foundation of the hard spot detection of vision.
Referring to Fig. 2, making feasibility analysis wherein to the vision-based detection of hard spot below, P is the contact pressure of pantograph 20
Power, Q are 20 self gravity of pantograph, and F1 and F2 are support force of 20 support construction of pantograph to pantograph 20, and amount above is full
The following relationship of foot:
P=F1+F2+ma-Q, wherein m is the quality of pantograph 20, and a is 20 acceleration of pantograph.
Equation transplants to obtain P- (F1+F2)+Q=ma, wherein the size of support force F1+F2 by pantograph 20 buffer unit
There is provided, the device spring-like, and non-rigid, so it can not change with contact pressure P is synchronous, and Q be pantograph 20 from
Body gravity is constant.When contact pressure P generation mutation for some reason, and support force F1+F2 has little time to change, then by electricity
The size of resultant force suffered by bow 20 will increase suddenly, and then generate the unexpected increase of acceleration magnitude, traditional detection method i.e. according to
The mutation of acceleration magnitude accordingly differentiates hard spot；And the unexpected increase of acceleration magnitude will necessarily make pantograph 20 in Vertical Square
Upward displacement generates great changes within a very short time.Our visible detection method is i.e. on this basis.
The utility model mainly uses machine vision non-contact detection mode referring to FIG. 1-2, in metro operation carrying
High-speed camera 40 is installed in roof of train, bow net state is monitored in real time, specific photosensitive material is installed on motorcycle pantograph 20,
By specific light-supplementing system in photosensitive material position diffusing reflection to high-speed camera 40, chased after in real time by positioning photosensitive material
20 location status of track pantograph transmits sum number by 40 photosignal of high-speed camera when pantograph 20 is impacted by hard spot
According to processing, real-time image analysis goes out 20 hard spot of pantograph impact front-rear position variable quantity, so that hard spot impact acceleration is calculated,
And carry out automatically recording the information that transfinites, it reminds relevant departments to notice that hard spot impacts accident point position, timely responds to investigation failure.This
The advantages of utility model device, is: 1, round-the-clock real-time detection: since utility model device uses non-contact detection side
Formula, mounting process is not limited under by specific environment.2, detection accuracy is high: utility model device is using the high frame per second camera shooting of high camera
Machine, minimum resolution reach 0.5mm.3, detection environment is close to fact: utility model device is installed on normal operation carrying column
Che Shang, the real-time detection in true operating environment more can really reflect the hard spot impact phenomenon under train operation fact, analysis knot
Fruit is true and reliable.4, installation and debugging are convenient, practical: since utility model device is small in size, the vehicle-mounted installation and debugging of convinent car,
It can be widely applied.
Referring to FIG. 1-2, when locomotive operation, on the contact surface of pantograph 20 and contact line, contact force suddenly change
Place is known as contact net hard spot.Hard spot is one of the principal element for influencing pantograph contact line relation, and main harm has mechanical wounding and electric arc wound
Evil.Mechanical wounding mainly will cause pantograph 20, the slight of contact net damages and scratch, and the normal contact destroyed between bow net takes
Stream, the abrasion of 20 slide plate of enlarged contact net conducting wire and pantograph.And electric arc injury shows as the high temperature of the offline moment generation of bow net
Electric arc will cause spot corrosion and vaporization to 20 bow of pantograph, while contact net will cause because of the biggish internal stress of high temperature generation
Local annealing causes to be easy to break because of tension.Therefore, the generation of hard spot can to pantograph 20, contact net, locomotive electric apparatus, lead
Draw motor, tractive transformer and entire locomotive power supply system to damage.Present invention mainly solves the impact of the above hard spot is dynamic in real time
State detection can monitor in real time bow net hard spot impact conditions in subway carrying normal operation, avoid due in bow net engagement process
Hard spot impacts and causes accident between pantograph, it is characterised in that: high-speed camera 40 is installed in metro operation carrying roof of train, it is real
When monitor bow net state, specific photosensitive material is installed on motorcycle pantograph 20, and by 40 real-time tracing of high-speed camera by
20 location status of pantograph, when pantograph 20 is impacted by hard spot, at the transmission of 40 photosignal of high-speed camera and data
Reason, real-time image analysis go out 20 impact acceleration of pantograph, and carry out automatically recording the information that transfinites, and relevant departments is reminded to pay attention to firmly
Point impact accident point position, timely responds to investigation failure, is mainly used for urban track traffic pantograph and catenary fault dynamic detection.
As described herein is only one embodiment with the utility model, is not intended to limit the patent of the utility model
Range, equivalent structure or equivalent flow shift made by using the description of the utility model and the drawings, or directly or
Other related technical areas are used in indirectly, are also included in the patent protection scope of the utility model.
Claims (6)
1. a kind of vehicular bow net hard spot shock testing device, it is characterised in that: including roof image collecting device, interior data
Analytical equipment and terminal Real-time Alarm device, the roof image collecting device and the interior data analysis set-up and the end
It holds and is wirelessly connected or is electrically connected between Real-time Alarm device；The roof image collecting device includes high-speed camera, bloom benefit
Electro-optical device and photosensitive material；On the car body, the bloom light compensating apparatus is mounted on the high speed and takes the photograph for the high-speed camera installation
The side of camera, the photosensitive material are mounted in pantograph.
2. a kind of vehicular bow net hard spot shock testing device as described in claim 1, it is characterised in that: the photosensitive material
Fixation is pasted onto the pantograph.
3. a kind of vehicular bow net hard spot shock testing device as described in claim 1, it is characterised in that: the high-speed camera
Machine is connect by specific fixing seat with the rigidity of vehicle body with the bloom light compensating apparatus.
4. a kind of vehicular bow net hard spot shock testing device as claimed in claim 3, it is characterised in that: the high-speed camera
The quantity of machine and the bloom light compensating apparatus is 2, respectively the first high-speed camera and the second high-speed camera, the first bloom
Light compensating apparatus and the second bloom light compensating apparatus；First high-speed camera is arranged with the first bloom light compensating apparatus described
The another of the photosensitive material is arranged in the second bloom light compensating apparatus in the side of photosensitive material, second high-speed camera
Side.
5. a kind of vehicular bow net hard spot shock testing device as described in claim 1, it is characterised in that: the car data
Analytical equipment includes location tracking device, special-purpose imageprocessor and vehicle bottom vibration compensation part；The location tracking device and the height
Speed camera shooting mechatronics or wireless connection；The special-purpose imageprocessor and the high-speed camera mechatronics or wireless connection；
The vehicle bottom vibration compensation part is mounted on the vehicle bottom of the car body, handles respectively with the location tracking device, the special image
Device electrical connection is wirelessly connected.
6. a kind of vehicular bow net hard spot shock testing device as claimed in claim 5, it is characterised in that: the high-speed camera
Machine, the bloom light compensating apparatus, the location tracking device, the special-purpose imageprocessor and the vehicle bottom vibration compensation part are all provided with
It is equipped with self-checking unit, the self-checking unit is connected with the terminal Real-time Alarm device.
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| CN201821126795.0U CN208872534U (en) | 2018-07-16 | 2018-07-16 | A kind of vehicular bow net hard spot shock testing device |
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| CN201821126795.0U CN208872534U (en) | 2018-07-16 | 2018-07-16 | A kind of vehicular bow net hard spot shock testing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806236A (en) * | 2019-11-20 | 2020-02-18 | 北京市地铁运营有限公司地铁运营技术研发中心 | Dynamic detection device for bow net pressure and hard points |
| CN110987348A (en) * | 2019-12-19 | 2020-04-10 | 中国国家铁路集团有限公司 | Catenary hard spot determination method and device based on pantograph-catenary dynamic response |
| CN117309875A (en) * | 2023-09-20 | 2023-12-29 | 北京运达华开科技有限公司 | Non-contact type bow net contact hard point detection device and method |
-
2018
- 2018-07-16 CN CN201821126795.0U patent/CN208872534U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806236A (en) * | 2019-11-20 | 2020-02-18 | 北京市地铁运营有限公司地铁运营技术研发中心 | Dynamic detection device for bow net pressure and hard points |
| CN110987348A (en) * | 2019-12-19 | 2020-04-10 | 中国国家铁路集团有限公司 | Catenary hard spot determination method and device based on pantograph-catenary dynamic response |
| CN110987348B (en) * | 2019-12-19 | 2021-12-17 | 中国国家铁路集团有限公司 | Catenary hard spot determination method and device based on pantograph-catenary dynamic response |
| CN117309875A (en) * | 2023-09-20 | 2023-12-29 | 北京运达华开科技有限公司 | Non-contact type bow net contact hard point detection device and method |
| CN117309875B (en) * | 2023-09-20 | 2024-04-09 | 北京运达华开科技有限公司 | Non-contact type bow net contact hard point detection device and method |
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Address after: No. 10, Wansheng Road, Wanjiang Street, Dongguan, Guangdong 523000 Patentee after: Dongguan Nuoli Technology Co.,Ltd. Address before: 523000 3rd Floor, Wanhongcun Building, Wanjiang Community, Dongguan City, Guangdong Province Patentee before: DONGGUAN NANNAR ELECTRONICS TECHNOLOGY Co.,Ltd. |