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Measuring the profile of wheel tires in the test bench

Wheel wear on rail vehicles caused by high mileage affects safety and driving characteristics and generates high maintenance costs. Laser sensors from Micro-Epsilon, which are integrated in a test bench in the track bed, are used to preventively detect the profile sets of entire trains. The sensors are installed in three tubs that are embedded in the track bed one behind the other at right angles to the direction of travel. Two optoNCDT laser distance sensors are located in each of the tubs 1 and 3 to determine the wheel diameter and the position of the wheel tire. Tub 2 contains scanCONTROL laser profile sensors for measuring the wheel profile. The sensors measure through half-sided recesses in the rails on the wheel tires. The maintenance dates for reprofiling are determined on the basis of the profile data.