钢轨焊接接头平直度测量固定式试验机设计

摘要

设计了一款钢轨焊接接头平直度测量固定式试验机.采用PLC控制器实现设备的动作控制,使用多功能数据采集板卡采集数据,应用Labview软件编写的程序实现测量数据的处理、显示与存储.大量测量试验表明,该试验机的机械设计可以满足长期测量可靠性的要求,重复测量精度高;同时,对比德国SEC电子尺测量数据和平直度曲线,结果表明:试验机系统测量精度很高,可以满足钢轨焊接接头平直度测量的标准要求,为今后推广研制固定式平直度测量设备提供了理论支撑和实践借鉴.%A testing device has been designed for measuring the straightness of welded joints in rails.Machine movement control is realized by using PLC contr-oller,the multi-function data acquisition card was used to collect data,and the Labview software program was utilized to realize processing,displaying and storage of measurement data.Through a large number of measurement experiments,we confirm that the mechanical design of the testing machine can meet the requirements of long-term measurement reliability because of its high repeatability;At the same time,the result of contrasting the Germany SEC electronic measurement data curve and the straightness degree shows that system measuring accuracy of the testing machine is very high,and it can satisfy the requirements of measuring standards for straightness of welded joints in rails.This research will provide the reference for developing promotion stationary straightness measuring machine in the future.