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研制的轮对几何参数动态在线测量系统主要由触发系统、轨边测量系统和室内信号采集与处理系统3部分组成。采用4套平行四边形机构和对应的涡流位移传感器,低速条件下实现车轮踏面磨耗与擦伤深度的动态定量测量;采用双激光位移传感器,直接测量车轮滚动过程中踏面到对应激光传感器的距离变化,通过计算得到车轮踏面直径;采用6个激光位移传感器,并通过这些传感器的组合测量,动态得到轮缘厚、轮辋宽和轮对内测距等尺寸。经过现场安装测试,验证了测量方案的可行性,实现了对车轮直径、踏面圆周磨耗及擦伤、轮缘厚度、轮辋宽度和轮对内测距的动态测量。
The developed on-line geometric parameters dynamic on-line measurement system consists of three parts: the trigger system, the rail edge measurement system and the indoor signal acquisition and processing system. Four sets of parallelogram mechanism and corresponding eddy current displacement sensor were used to realize the dynamic quantitative measurement of wheel tread wear and abrasion depth under low speed. The double laser displacement sensor was used to directly measure the distance variation of tread to the corresponding laser sensor during wheel rolling, By calculating the wheel tread diameter; the use of six laser displacement sensor, and through the combination of these sensor measurements, dynamic rim thickness, rim width and wheel alignment and other dimensions. After the on-site installation test, the feasibility of the measurement scheme was verified, and the dynamic measurement of wheel diameter, tread wear and abrasion, rim flange thickness, wheel rim width and wheel alignment was achieved.