CN117822363A - Single-string photoelectric measurement method for tamping car - Google Patents
Single-string photoelectric measurement method for tamping car Download PDFInfo
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- CN117822363A CN117822363A CN202211187483.1A CN202211187483A CN117822363A CN 117822363 A CN117822363 A CN 117822363A CN 202211187483 A CN202211187483 A CN 202211187483A CN 117822363 A CN117822363 A CN 117822363A
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- measurement
- string
- tamping car
- mounting point
- photoelectric
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- 238000000691 measurement method Methods 0.000 title claims abstract description 7
- 238000005259 measurement Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims description 7
- 230000005693 optoelectronics Effects 0.000 claims 2
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to railway road maintenance equipment, in particular to a single-string photoelectric measurement method of a tamping car, wherein two ends and the middle part of the tamping car are respectively provided with a measurement part mounting point, one measurement part mounting point is provided with a laser emitter, the other two measurement part mounting points are provided with photoelectric detectors, and the two photoelectric detectors are used for measuring the offset of laser emitted by the laser emitter. The invention can realize non-contact measurement, reduce errors caused by contact measurement, and has the advantages of difficult abrasion, high precision, high speed, convenient use and the like when the laser string is used for measurement.
Description
Technical Field
The invention relates to railway maintenance equipment, in particular to a single-string photoelectric measurement method of a tamping car.
Background
The current tamping car utilizes a string measuring method to measure the longitudinal level of a track, and consists of three detection rods, two steel strings and an inclination sensor on three detection trolleys on the tamping car, wherein one detection rod is respectively erected at two ends, one string is tensioned at the top ends of the two detection rods, and when the track of the detection point changes relative to the string, the feeler lever of the sensor can rotate under the pulling of the tensioned string, so that related measured values are output. The string material used in the method is a steel wire rope. The string of the steel wire rope can be worn and broken along with the lapse of the service time, and the steel wire rope needs to be maintained and replaced regularly by personnel; the sensor adopted by the current tamping car measuring system is a mechanical sensor, and has certain limitations in measuring precision and repeatability; in the running process, the string of the steel wire rope can shake due to vibration of the car body, so that the measured value is unstable and the accuracy is required to be improved. And the structure is complex because of adopting the double-chord measuring track.
Disclosure of Invention
The invention provides a single-string photoelectric measurement method for a tamping car, which overcomes the technical defects of easy abrasion, low measurement precision and unstable measurement value in the prior art, reduces errors caused by contact measurement and improves measurement precision.
The invention is realized by the following technical scheme:
a single-string photoelectric measurement method for a tamping car is characterized in that two ends and a middle part of the tamping car are respectively provided with a measurement part mounting point, one measurement part mounting point is provided with a laser emitter, the other two measurement part mounting points are provided with photoelectric detectors, and the two photoelectric detectors are used for measuring the offset of laser emitted by the laser emitter.
Preferably, the front end measuring part mounting point is located at the front cab door, the rear end measuring part mounting point is located at the rear cab position, and the middle measuring part mounting point is located at a position 4500mm away from the rear cab.
Preferably, the inclination sensor is placed at each of the three measuring component mounting points.
The invention can realize non-contact measurement, reduce errors caused by contact measurement, and has the advantages of difficult abrasion, high precision, high speed, convenient use and the like when the laser string is used for measurement.
Drawings
Fig. 1 is a schematic view of the mounting position of the measuring component mounting point on a tamping car according to the present invention.
Fig. 2 is a schematic diagram of the working principle of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a measuring part mounting point B, C, D, B, C, D is provided at each of the two ends and the middle of the tamping car as follows: the point D is located at the front cab door, the point B is located at the rear cab position, and the point C is located at a distance of 4500mm from the point B. B. And C, D, wherein a laser emitter is arranged at the point B of the three points, and a photoelectric detector is respectively arranged at the other two points to measure the offset of laser. Simultaneously, tilt sensors are placed at three points B, C, D, and the x, y and z three-direction attitude angle information of the three points B, C, D is measured.
And measuring the offset of the laser light bar emitted by the laser emitter at the point C and the point D by using the photoelectric detectors at the point C and the point D, measuring the attitude angle of the point B, C, D by using the inclination sensor, and correcting the measured values at the three points B, C, D. Namely, the coordinate of the C, D point can be converted into the coordinate system of the B point through coordinate transformation, so that errors caused by installation positions and angle inclinations during measurement are reduced. The photodetectors arranged at the two points C, D are staggered left and right, and the laser emitted by the laser emitter is in a light bar shape, so that the photodetectors at the two points C, D can be irradiated at the same time.
As shown in fig. 2, the invention detects the longitudinal level of the track by using a single chord, and when the track changes relative to the laser chord, the laser position information received by the two photodetectors changes similarly. Meanwhile, the photoelectric measurement system corrects deviation caused by the attitude angle by means of the inclination sensor. Compared with a method for measuring the longitudinal level of the track by using double strings, the method has the advantages that the number of photoelectric detectors can be reduced by using the longitudinal level of the track by using single strings, the requirement on installation space is reduced, and errors caused by sensor measurement are correspondingly reduced because the number of sensors is reduced compared with the longitudinal level of the track by using double strings.
Claims (3)
1. A single-string photoelectric measurement method for a tamping car is characterized in that two ends and a middle part of the tamping car are respectively provided with a measurement part mounting point, one measurement part mounting point is provided with a laser emitter, the other two measurement part mounting points are provided with photoelectric detectors, and the two photoelectric detectors are used for measuring the offset of laser emitted by the laser emitter.
2. The method of optoelectronic measurement of a tamping car of claim 1, wherein the front end measurement component mounting point is located at a front cab door opening, the rear end measurement component mounting point is located at a rear cab position, and the middle measurement component mounting point is located at a distance of 4500mm from the rear cab.
3. A method of optoelectronic measurement of a tamping car according to claim 1 or claim 2, wherein tilt sensors are disposed at each of said three measurement member mounting points.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211187483.1A CN117822363A (en) | 2022-09-28 | 2022-09-28 | Single-string photoelectric measurement method for tamping car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211187483.1A CN117822363A (en) | 2022-09-28 | 2022-09-28 | Single-string photoelectric measurement method for tamping car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117822363A true CN117822363A (en) | 2024-04-05 |
Family
ID=90508371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211187483.1A Pending CN117822363A (en) | 2022-09-28 | 2022-09-28 | Single-string photoelectric measurement method for tamping car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117822363A (en) |
-
2022
- 2022-09-28 CN CN202211187483.1A patent/CN117822363A/en active Pending
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