Track measurement

TRACK CART FOR TRACK GEOMETRY AND RAIL WEAR MEASUREMENT

The Trackscan Cadd-e trolley is equipped with the laser inertial non-contact measurement system. The system measures track geometry parameters and both rail cross-section profiles, calculating the rail head wear. A built-in GPS controller provides information on the measurementroute.

The device meets requirements of the EN 13848 - 4 standard

Dedicated PC software delivered with the system makes it possible to carry out extensive measurement data analysis and reporting.

The measurement data is displayed on a weatherresistant and ruggedised PC based control unit providing the operator with comfortable working conditions at night (backlight), day (visibility even in direct sunlight) and with comfortable touch screen display.

Built-in functionality allows the user to compare measurements taken at different periods of time. All measurements are presented in the form of graphs with selected parameters exceeding the specified tolerance, there are also icons showing track defects observed by trolley operators during measurements. Track geometry reports can be saved in Word, Excel, PDF, CSV formats. The software enables exporting data and printing reports. The standard version of the software provides capabilities of generating reports for:

Charting measurement data,
The report numerical measurement results,
The report defects,
The report performance indicators.

By saving the GPS position, measurement results can be displayed on maps.

The system allows the measurement of the rail head cross-section. Measured results are automatically analyzed and parameters of wear are automatically calculated. The results of these calculations are presented in the form of graphs.

The software makes it possible to perform detailed analysis of selected cross-sections and compare them with nominal profiles. Results of railhead wear analyzes can be printed as reports or saved to DXF files.

Screenshot of the PC measurement data analysis and reporting software delivered with the Trackscan Cadd-e

Measurement data analysis and reporting software delivered with the trolley is compatible with Windows XP or higher. Advanced software makes it possible to analyze all measured parameters, show measured parameters on charts, show measured parameters in numerical tables, show measured rail profiles, define set of tolerances, calculate typical track performance indicators, e.g. standard deviation, generate reports, etc.

An example of automatic calculation of rail head wear

The trolley memory size is big enough to store up to 56 000 km of track geometry data or railhead profiles from 260 km length. Saved measurements are copied to the office system via the USB port.

Specifications
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Specifications

Measurement Range	Track Gauge: -15 ÷ +50 mm
	Cant (Crosslevel): ±225 mm
	Vertical Versines: ±20.0 mm
	Horizontal Versines: ±70.0 mm
	Alignment (D1): ±50 mm
	Longitudinal level (D1): ±50 mm
	Railhead profile and wear: Vignol and grooved rails
	Satellite localisation (GPS)
Measurement Accuracy	Track Gauge: ±1 mm
	Cant (Crosslevel): ±3 mm
	Vertical Versines: ±2 mm/10 m
	Horizontal Versines: ±2 mm/10 m
	Alignment (D1): ±1.5mm
	Longitudinal level (D1): ±1 mm
	Railhead profile and wear: Vignol and grooved rails: ±0.3 mm
	Satellite localisation (GPS): ±5 m
	Based on parameters listed above, the following values are calculated: twist, gradient, and railhead wear. Versines may be obtained for chord lengths of up to 20 m.
Operating speed	Max 16 km/h
Autonomy-operating distance	60 km (to be adjusted as per Customer’s requirement)
Operating temperature	0 ÷ +45°C
Operating humidity	15 ÷ 85% (no condensation)