CN114964008A - Portable contact line continuous abrasion measuring instrument and measuring method for rigid contact net - Google Patents
Portable contact line continuous abrasion measuring instrument and measuring method for rigid contact net Download PDFInfo
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- CN114964008A CN114964008A CN202210390008.8A CN202210390008A CN114964008A CN 114964008 A CN114964008 A CN 114964008A CN 202210390008 A CN202210390008 A CN 202210390008A CN 114964008 A CN114964008 A CN 114964008A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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Abstract
The invention discloses a portable contact line continuous abrasion measuring instrument and a measuring method for a rigid contact net, which comprise a measuring module and a crawling mechanism, wherein the measuring module is arranged in the crawling mechanism, and the crawling mechanism is arranged on a busbar of the rigid contact net for crawling measurement; the measuring module comprises a laser generator and an area array ccd camera, wherein the laser generator is right opposite to the contact line and generates a light curtain to be perpendicular to the contact line for measurement; the two sides of the contact line are respectively provided with an area array ccd camera, and the two area array ccd cameras respectively generate area array imaging on the contact lines at the two sides at set angles; and forming a contact line three-dimensional profile graph by laser measurement and area array imaging to generate the contact line abrasion dimension and the residual contact line height. The laser beam and 2 sets of ccd imaging technologies are adopted, the measurement is carried out in a close range without dead angles, the precision is high, and the speed is high; the dynamic continuous measurement of the contact line abrasion is realized, and the traditional fixed-point measurement means is broken through.
Description
Technical Field
The invention relates to the field of urban rail transit, in particular to a portable contact line continuous abrasion measuring instrument and a measuring method for a rigid contact line.
Background
Based on the abrasion characteristics of the rigid contact line, no technical means can realize high-precision direct measurement of the abrasion residual height of the rigid contact line in the prior industry, the rigid contact line cannot be realized, the continuous measurement and monitoring of the actual residual height can be realized, and the abrasion state of the rigid contact line can be monitored only by means of manual examination and fixed-time and fixed-point monitoring. In the prior art, there are several monitoring means:
1. the contact line dynamic monitoring equipment is additionally provided with a contact line abrasion monitoring technology: the contact wire abrasion monitoring module is required to be additionally arranged on an electric bus and an engineering vehicle, equipment needs to be maintained and adjusted regularly, special detection plan arrangement is required, maintenance plan cost and influence on related professional plan operation are huge, dynamic monitoring in actual application is easily influenced by operating environment, and abrasion monitoring data accuracy is low.
2. The existing portable contact net wire abrasion measuring instrument in the industry: only single-point monitoring is supported, the measurement precision is generally influenced by the equipment state (oil stain and the geometric dimension of the busbar 3), continuous monitoring cannot be realized, the failure rate of the transmission terminal equipment 18 is high, comprehensive and continuous monitoring of the abrasion state of the contact line cannot be realized, and the operation efficiency is low.
3. A vernier caliper: the monitoring point position needs to be checked and confirmed manually, fixed-point monitoring is carried out, the reading is not visual, the measurement efficiency is low, comprehensive and continuous monitoring of the abrasion state of the contact line cannot be realized, and the monitoring efficiency is poor.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a portable contact line continuous abrasion measuring instrument for a rigid contact line, which utilizes line laser and ccd imaging technologies and realizes effective and convenient measurement by a three-dimensional contour measurement principle. Another object of the present invention is to provide a measuring method for implementing the above-mentioned measuring instrument.
In order to achieve the purpose, the portable contact line continuous abrasion measuring instrument for the rigid contact network comprises a measuring module and a crawling mechanism, wherein the measuring module is installed in the crawling mechanism, and the crawling mechanism is installed on a busbar of the rigid contact network for crawling measurement;
the measuring module comprises a laser generator and an area array ccd camera, wherein the laser generator is right opposite to the contact line and generates a light curtain to be perpendicular to the contact line for measurement; the two sides of the contact line are respectively provided with an area array ccd camera, and the two area array ccd cameras respectively generate area array imaging on the contact lines at the two sides at set angles;
and forming a contact line three-dimensional profile graph by laser measurement and area array imaging to generate the contact line abrasion dimension and the residual contact line height.
Further, the busbar includes the top, and the symmetry extends there are two lateral walls below the top, and each lateral wall below all is provided with the chuck, forms the clamp mouth that is used for centre gripping contact line between the tip of chuck.
Further, the chuck extends to the horizontal direction and is used for the platform of crawling mechanism operation.
Furthermore, the crawling mechanism comprises a box unit, two groups of walking wheels and two groups of guide wheels, the walking wheels are installed on the platform, and the guide wheels are installed corresponding to the vertical side walls of the platform.
Further, the measuring module is installed in the box body unit, and a pressure spring is arranged between the bottom of the measuring module and the bottom of the box body unit.
Furthermore, the included angle between the area array ccd camera and the horizontal direction is 45-60 degrees.
Furthermore, a foreign matter processor is arranged at the position of the clamping opening to remove residual foreign matters on the bus bar and the contact line.
Furthermore, the bottom of the box body unit is provided with a dragging insulating rope.
A portable contact line continuous abrasion measuring method for a rigid contact net specifically comprises the following steps:
1) continuously scanning the cross section outline of the contact line by using a ccd area-array camera and a laser generator, and transmitting the cross section outline to a terminal;
2) scanning and building a basic calculation coordinate system on the basis of the contact line profile;
3) measuring and scanning the contact line with line surface abrasion, forming coordinate data X in the X-axis direction of the coordinate system at intervals of a set distance 1 To X N (ii) a Forming coordinate data Y in the Y-axis direction of the coordinate system at intervals of a set distance 1 To Y N Finally, drawing a line surface abrasion profile curve;
4) storing a first contour curve of a brand-new unworn contact line in the terminal, comparing the line surface abrasion contour curve with the first contour curve, screening AB linear data of an abrasion section (what needs to be defined is AB linear data), and calculating abrasion width, residual height, abrasion angle and abrasion area;
wherein, contact line abrasion angle θ:
(theta is the wear section AB line eccentric wear angle, (X) 1 ,Y 2 )(X N ,Y N ) The initial coordinate and the end coordinate of the AB section);
contact line remaining height: h 0 ＝Y a -limY N ；
(H 0 Is the contact line residual height, Y a Is the maximum value of the contact line abrasion section ordinate, limY N Is the AB cross-sectional ordinate minimum);
in the wear width calculation, the wear width is modeled by the height as the variable:
lower layer round surface (L is more than or equal to 0 and less than or equal to 9.6424), abrasion width:
upper round surface (L > 9.6424), wear width:
(H is the contact line abrasion height, Y 1 、Y 2 ...Y N Is a section AB ordinate measurement, N is the total number of measurements, Y b Is the minimum value of the contact line abrasion section ordinate; l is the contact line abrasion section AB width, R 20 Is the radius of the lower round surface of the contact line model, R 7.55 Radius of upper layer of the contact line model, contactThe width AB of the boundary line section of the upper layer and the lower layer of the line model is 9.6424);
and (3) calculating the abrasion area:
lower round surface, wear area:
upper round surface, wear area:
(S is the contact line wear area, L is the contact line wear cross-section AB width, R 20 Is the radius of the lower round surface of the contact line model, R 7.55 Is the radius of the upper layer circular surface of the contact line model, and deltaS is the difference of the area of the upper layer circular surface after extending downwards and the area of the lower layer circular surface).
Furthermore, the acquisition frequency of the ccd area-array camera and the laser generator is 10HZ-50 HZ.
The laser beam and 2 sets of ccd imaging technologies are adopted, the measurement is carried out in a close range without dead angles, the precision is high, and the speed is high; the dynamic continuous measurement of the contact line abrasion is realized, and the traditional fixed-point measurement means is broken through; the measuring instrument has the advantages of small and exquisite structure, high efficiency and convenient use.
Drawings
FIG. 1 is a schematic structural view of a portable contact line continuous abrasion measuring instrument for a rigid contact line;
fig. 2 is a schematic structural diagram of a laser generator 4 and an area array ccd camera 5;
FIG. 3 is a schematic view of new contact line imaging;
FIG. 4 is a schematic view of contact line imaging after wear;
FIG. 5 is a 150-line standard structure;
FIG. 6 is a schematic diagram of the technical parameters during measurement;
FIG. 7 is ZY 47 A curve diagram of real-time measurement data of the abrasion of the anchor section;
FIG. 8 is ZY 47 The historical data of the anchor segment abrasion is compared with a change curve graph.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 8, the portable contact line continuous wear measuring instrument for a rigid contact line of the present invention uses line laser and ccd imaging technologies to measure according to a three-dimensional contour measurement principle, and develops a crawling mechanism 2 for the rigid contact line, so that the crawling mechanism can carry a measuring module 1, and the measuring module 1 can automatically or manually perform continuous crawling measurement on a rigid suspension, the measuring data of the measuring module 1 is wirelessly transmitted to a ground terminal device 18, and the terminal device 18 can directly display the measuring data to generate a data report, and can perform intelligent analysis and comparison with historical data to generate a wear change curve.
The invention discloses a portable contact line continuous abrasion measuring instrument for a rigid contact network, which comprises a measuring module 1 and a crawling mechanism 2, wherein the measuring module 1 is installed in the crawling mechanism 2, and the crawling mechanism 2 is installed on a busbar 3 of the rigid contact network to perform crawling measurement, so that the contact line short-distance measurement is realized. The crawling mechanism 2 is provided with two walking measurement modes of automatic walking measurement and manual walking measurement, and can be switched according to working requirements so as to realize continuous measurement of abrasion of rigid contact wires in various styles in different environments.
The measuring module 1 comprises a laser generator 4 and an area array ccd camera 5, wherein the laser generator 4 is right opposite to the contact line and generates a light curtain to be perpendicular to the contact line 6 for measurement; two sides of the contact line 6 are respectively provided with an area array ccd camera 5, and the two area array ccd cameras 5 respectively generate area array imaging on the contact lines at two sides at a set angle. According to the practical application condition, the included angle between the area array ccd camera 5 and the horizontal direction is generally set to be 45-60 degrees, so that the contact lines on the two sides can generate area array imaging.
The invention forms a contact line three-dimensional profile graph by laser measurement and area array imaging, and generates the contact line abrasion dimension and the residual contact line height.
The busbar 3 comprises a top 7, below which top 7 two side walls 8 extend symmetrically, below each side wall 8 a clamping head 9 is arranged, between the ends of which clamping heads 9 a clamping mouth 10 is formed for clamping the contact line 6. The gripping head 9 extends horizontally with a platform 11 for the operation of the crawling mechanism 2.
A foreign matter processor 17 is arranged at the clamping opening 10, so that during measurement, foreign matters remained on the bus bar 3 and the contact line can be removed in time, the influence of external factors is reduced, and the measurement precision is improved.
During measurement, the portable contact line continuous abrasion measuring instrument for the rigid contact line is arranged on a busbar 3 of the rigid contact line by means of a crawling mechanism 2 to perform crawling measurement. In the walking process of the crawling mechanism 2, the measuring module 1 achieves high-frequency measurement through the area array ccd camera 5 and the laser generator 4, the measuring module 1 is connected through Bluetooth and transmits measuring data to the ground terminal equipment 18, the terminal equipment 18 generates measuring data through internal calculation analysis, and the measuring data is compared with historical data to generate a wear curve change analysis graph so as to achieve high-frequency and high-accuracy measurement and real-time comparison analysis of the data.
The invention relates to a portable contact line continuous abrasion measuring instrument for a rigid contact line, which runs on the rigid contact line through a unique crawling mechanism 2, uses a laser ray three-dimensional profile imaging technology of an area array ccd camera 5 and a laser generator 4 to carry out measurement analysis calculation, realizes continuous abrasion measurement on the rigid contact line, can directly generate abrasion width, residual height and abrasion angle of an abrasion surface of the contact line, and has high measuring frequency and high measuring data precision.
The measurement data of the measurement module 1 can be transmitted wirelessly to the ground terminal device 18 by bluetooth, and the terminal device 18 can implement duration data storage. The measuring mechanism can realize the measuring and collecting frequency (the frequency setting range is 10HZ-50HZ, namely, not less than 100 measuring point positions per meter) of the laser beam and the area array ccd camera 5 through setting, and generate a data collecting curve graph in real time through the terminal equipment 18, as shown in figures 7 and 8,ZY from Fangzhuang to Shili river 47 The anchor segment abrasion real-time measurement data curve graph and the historical data comparison change curve graph can also be used for comparing the measurement data with the duration data through the terminal equipment 18 according to actual requirements to form a data change curve comparison graph so as to find abrasion sudden change and change conditions in time.
The invention also provides a portable contact line continuous abrasion measuring method for the rigid contact line, which is implemented by applying the portable contact line continuous abrasion measuring instrument for the rigid contact line, and specifically comprises the following steps:
1. continuously scanning the cross section profile of the contact line by using an area array ccd camera 5 and a laser generator 4 and adopting a three-dimensional profile imaging technology, and transmitting the cross section profile to terminal software;
2. the terminal software scans and sets up a basic calculation coordinate system on the basis of the profile of the new contact line, and different profile calculation modes can be set according to the line type;
3. during measurement, the measuring instrument scans the contact line with line surface abrasion to form a profile image, and the profile image is compared with a new line profile for calculation;
4. measuring and scanning the contact line with line and surface wear, forming coordinate data X in X-axis direction of coordinate system at intervals of set distance 1 To X N (ii) a Forming coordinate data Y in the Y-axis direction of the coordinate system at intervals of a set distance 1 To Y N Finally, drawing a line surface abrasion profile curve; such as: forming coordinate data in the X-axis direction of the coordinate system at intervals of 2 mm; forming coordinate data at intervals of 0.2mm in the Y-axis direction of the coordinate system, and finally drawing a contour curve;
5. a first profile curve of a brand-new unworn contact line is stored in the terminal, and the background of the terminal compares two profile data: and screening AB linear data of the wear section (which needs to be defined) by the line surface wear profile curve and the first profile curve, and calculating the wear width, the residual height, the wear angle and the wear area.
Based on the AB linear data, each wear component data was calculated:
contact line wear angle θ:
(theta is the wear section AB line eccentric wear angle, (X) 1 ,Y 2 )(X N ,Y N ) The initial coordinate and the end coordinate of the AB section);
contact line remaining height: h 0 ＝Y a -limY N ；
(H 0 Is the contact line residual height, Y a Is the maximum value of the ordinate of the wearing section of the contact line, limY N Is the AB cross-sectional ordinate minimum);
in the wear width calculation, the wear width is modeled by the height:
lower round surface (L is more than or equal to 0 and less than or equal to 9.6424), abrasion width:
upper round surface (L > 9.6424), wear width:
(H is the contact line abrasion height, Y 1 、Y 2 ...Y N Is a section AB ordinate measurement, N is the total number of measurements, Y b Is the minimum value of the contact line abrasion section ordinate; l is the contact line wear section AB width, R 20 Is the radius of the lower round surface of the contact line model, R 7.55 The radius of the upper layer circular surface of the contact line model is defined, and the width AB of the boundary line section of the upper layer circular surface and the lower layer circular surface of the contact line model is 9.6424);
and (3) calculating the abrasion area:
lower round surface, wear area:
upper round surface, wear area:
(S is the contact line wear area, L is the contact line wear cross-section AB width, R 20 Is the radius of the lower round surface of the contact line model, R 7.55 Is the radius of the upper layer circular surface of the contact line model, and deltaS is the difference of the area of the upper layer circular surface after extending downwards and the area of the lower layer circular surface).
Wherein L is 0 The area difference Delta S of double circles is about 7.667278048mm for the upper and lower layer boundary width of the flat contact line 2 。
The invention is mainly characterized in that:
1. the crawling mechanism 2 is developed for a rigid suspension contact network, so that the rigid suspension contact network can bear the measuring module 1, crawl on a rigid contact network busbar 3, and realize short-distance measurement. The crawling mechanism 2 can realize two modes of automatic walking measurement and manual walking measurement.
2. Inputting the contact line standard line technical specification and the abrasion conversion mode into the program software of the terminal equipment 18 (as shown in fig. 6, taking 150 lines as an example), forming a field contact line three-dimensional imaging contour map by a measuring mechanism through a laser beam and 2 sets of area array ccd cameras 5, and performing calculation and analysis on the three-dimensional imaging contour data through the terminal equipment 18 and the standard line contour map to form contact line abrasion measurement data, wherein the data are specifically shown in the following table:
3. during the measurement, the worker utilizes the insulating rope or the insulating rod to drag the crawling mechanism 2 to realize continuous measurement, and the self-walking mode can also be used for automatic measurement.
4. The measurement data of the measurement module 1 can be transmitted wirelessly to the ground terminal device 18 by bluetooth, and the terminal device 18 can implement duration data storage. The measuring mechanism can realize the measurement and collection frequency of the laser beam and the area array ccd camera 5 through setting, and generate a data collection curve graph in real time through the terminal equipment 18, as shown in fig. 7 and 8, the measured data and the duration data can be compared through the terminal equipment 18 according to actual requirements, and a data change curve comparison graph is formed, so that abrasion sudden change and change conditions can be found in time.
5. The measuring mechanism and the crawling mechanism 2 are light and small in design, convenient to carry, install, high in efficiency and convenient to use, and enable short-distance continuous measurement to be possible.
6. The terminal equipment 18 has delicate and small appearance, strong function of the built-in system, convenient operation of the interface, automatic data storage and form derivation, and can realize the comparative analysis with the historical data and generate a data report.
7. The measurement data is visual, fast and convenient for reading and identifying.
8. By adopting the laser beam and 2 sets of ccd imaging technologies, the measurement is carried out at a close distance without dead angles, the precision is high, and the speed is high.
9. The dynamic continuous measurement of the contact line abrasion is realized, a data change curve report can be generated, and the traditional fixed-point measurement means is broken through.
The technical indexes of the invention are as follows:
1. the use of the linear type: round wire, flat wire, specification: 85. 110, 120, 150, 250.
2. And (3) measuring precision: the residual height error value of plus or minus 0.02mm can be realized.
3. Measurement interval: high-frequency continuous measurement, and the measurement is not less than 100 points per meter.
4. Maximum crawling speed of crawling mechanism 2: no less than 5 km/h.
5. 2 weight of crawling mechanism: not more than 3 kg.
6. Remaining height accuracy: not less than 1% of the measured value.
7. Data transmission: bluetooth technology, wireless transmission, transmission distance 5-10 m.
8. The application occasions are as follows: and (3) measuring contact line abrasion by using a rigid contact net suspension system.
9. Working temperature: -5 ℃ to 50 ℃.
10. The power supply mode comprises the following steps: the operation was continuously carried out for no less than 8 hours with the incorporation of the graphene battery.
11. The measuring system has a data compensation function.
12. The data curve may be automatically generated.
13. Historical data may be recorded and wear profiles compared simultaneously.
Claims (10)
1. A portable contact line continuous abrasion measuring instrument for a rigid contact network is characterized by comprising a measuring module and a crawling mechanism, wherein the measuring module is installed in the crawling mechanism, and the crawling mechanism is installed on a busbar of the rigid contact network for crawling measurement;
the measuring module comprises a laser generator and an area array ccd camera, wherein the laser generator is right opposite to the contact line and generates a light curtain to be perpendicular to the contact line for measurement; the two sides of the contact line are respectively provided with an area array ccd camera, and the two area array ccd cameras respectively generate area array imaging on the contact lines at the two sides at set angles;
and forming a contact line three-dimensional profile graph by laser measurement and area array imaging to generate the contact line abrasion dimension and the residual contact line height.
2. The portable contact line continuous abrasion measuring instrument of the rigid contact line according to claim 1, wherein the bus bar comprises a top, two side walls symmetrically extend below the top, a chuck is arranged below each side wall, and a clamping opening for clamping the contact line is formed between the ends of the chucks.
3. The portable contact line continuous abrasion measuring instrument for the rigid contact line according to claim 2, wherein the chuck extends horizontally with a platform for the operation of the crawling mechanism.
4. The portable contact line continuous abrasion measuring instrument for the rigid contact line according to claim 3, wherein the crawling mechanism comprises a box unit, two sets of walking wheels and two sets of guide wheels, the walking wheels are mounted on the platform, and the guide wheels are mounted corresponding to the vertical side walls of the platform.
5. The portable contact line continuous abrasion measuring instrument for the rigid contact line according to claim 4, wherein the measuring module is installed in the box unit, and a pressure spring is arranged between the bottom of the measuring module and the bottom of the box unit.
6. The portable contact line continuous abrasion measuring instrument for the rigid contact line according to claim 1, wherein the included angle between the area array ccd camera and the horizontal direction is 45-60 degrees.
7. The portable contact line continuous abrasion measuring instrument for the rigid contact line according to claim 2, wherein a foreign matter processor is arranged at the nip to remove the residual foreign matters on the busbar and the contact line.
8. The portable contact line continuous abrasion measuring instrument for the rigid contact line according to claim 4, wherein the bottom of the box unit is provided with a dragging insulated rope.
9. A portable contact line continuous abrasion measuring method for a rigid contact net is characterized by comprising the following steps:
1) continuously scanning the cross section outline of the contact line by using a ccd area-array camera and a laser generator, and transmitting the cross section outline to a terminal;
2) scanning and building a basic calculation coordinate system on the basis of the contact line profile;
3) measuring and scanning the contact line with line and surface wear, forming coordinate data X in X-axis direction of coordinate system at intervals of set distance 1 To X N (ii) a Forming coordinate data Y in the Y-axis direction of the coordinate system at intervals of a set distance 1 To Y N Finally, drawing a line surface abrasion profile curve;
4) storing a first contour curve of a brand-new unworn contact line in the terminal, comparing the line surface abrasion contour curve with the first contour curve, screening AB linear data of an abrasion section (what needs to be defined is AB linear data), and calculating abrasion width, residual height, abrasion angle and abrasion area;
wherein, contact line abrasion angle θ:
theta is the wear section AB line eccentric wear angle, (X) 1 ,Y 2 )(X N ,Y N ) The initial coordinate and the terminal coordinate of the AB section are shown;
contact line remaining height: h 0 ＝Y a -limY N ；
H 0 Is the contact line residual height, Y a Is the maximum value of the contact line abrasion section ordinate, limY N The minimum value of the section ordinate of the abrasion section AB;
in the wear width calculation, the wear width is modeled by the height:
lower round surface (L is more than or equal to 0 and less than or equal to 9.6424), abrasion width:
upper round surface (L > 9.6424), wear width:
h is the contact line wear height, Y 1 、Y 2 ...Y N Is a measurement of the abrasion section AB ordinate, N is the total number of measurements, Y b Is the minimum value of the contact line abrasion section ordinate; l is the contact line wear section AB width, R 20 Is the radius of the lower round surface of the contact line model, R 7.55 The radius of the upper layer circular surface of the contact line model is defined, and the width AB of the boundary abrasion section of the upper layer circular surface and the lower layer circular surface of the contact line model is 9.6424;
and (3) calculating the abrasion area:
lower round surface, wear area:
upper round surface, wear area:
s is the contact line wear area, L is the contact line wear section AB width, R 20 Is the radius of the lower round surface of the contact line model, R 7.55 The radius of the upper layer circular surface of the contact line model is shown, and Delta S is the area difference of the upper layer circular surface after extending downwards and the lower layer circular surface.
10. The method for measuring the continuous abrasion of the light contact line of the rigid contact line of claim 9, wherein the acquisition frequency of the ccd area-array camera and the laser generator is 10HZ to 50 HZ.
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| CN202210390008.8A CN114964008A (en) | 2022-04-14 | 2022-04-14 | Portable contact line continuous abrasion measuring instrument and measuring method for rigid contact net |
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| CN202210390008.8A CN114964008A (en) | 2022-04-14 | 2022-04-14 | Portable contact line continuous abrasion measuring instrument and measuring method for rigid contact net |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116147504A (en) * | 2023-04-18 | 2023-05-23 | 领视科技成都有限公司 | Vehicle-mounted non-contact line abrasion measurement method and system |
| CN117029696A (en) * | 2023-10-08 | 2023-11-10 | 天津津铁供电有限公司 | Abrasion detection method and detection equipment for rigid suspension contact net |
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2022
- 2022-04-14 CN CN202210390008.8A patent/CN114964008A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116147504A (en) * | 2023-04-18 | 2023-05-23 | 领视科技成都有限公司 | Vehicle-mounted non-contact line abrasion measurement method and system |
| CN117029696A (en) * | 2023-10-08 | 2023-11-10 | 天津津铁供电有限公司 | Abrasion detection method and detection equipment for rigid suspension contact net |
| CN117029696B (en) * | 2023-10-08 | 2024-01-02 | 天津津铁供电有限公司 | Abrasion detection method and detection equipment for rigid suspension contact net |
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