基于非接触式测量技术的捣固车作业线路纵向水平检测系统的研发及试验研究

Development and Experimental Research of Longitudinal Horizontal Detection System for Tamping Machine Operation Railways Based on Non-contact Measurement Technology

捣固车作业线路纵向水平测量采用传统钢丝绳弦线法,长周期使用存在钢弦磨损、断裂的风险,且钢弦抖动会影响测量精度及稳定性。针对这些问题,本文研发了一套基于非接触式测量技术的捣固车作业线路纵向水平检测系统。该系统基于位敏探测器(Position Sensitive Detector,PSD)激光测量原理,采用E型激光发射器和接收器实现激光偏移量的测量。以DCL-32连续式捣固车为例,通过加速度传感器和激光传感器获取捣固车的振动特性,在振动实验室利用该系统进行现场工况模拟试验,并与现场试验数据进行对比。结果表明:该系统能够实现35 Hz振动频率跟随,可靠、稳定地采集线路纵向水平数据。

The longitudinal horizontal measurement of the tamping machine operation railway adopted the traditional wire rope string method.Long term use poses risks of steel string wear and fracture,and steel string vibration can affect measurement accuracy and stability.In response to these issues,this article developed a longitudinal horizontal detection system for tamping machine operation railways based on non-contact measurement technology.This system is based on the principle of position sensitive detector(PSD)laser measurement,and uses an E-type laser emitter and receiver to measure laser offset.Taking the DCL-32 continuous tamping machine as an example,the vibration characteristics of the tamping machine were obtained through acceleration sensors and laser sensors.The system was used in the vibration laboratory to conduct on-site working condition simulation tests and compared with on-site test data.The results show that the system can meet the requirement of following the 35 Hz vibration frequency and achieve reliable and stable collection of longitudinal horizontal data of the railway.