铁路机车车辆限界规校准方法研究

Study on Calibration Methods for Rolling Stock Clearance Treadle

JJG(铁道)180—2004《标准轨距铁路机车车辆限界规》,采用光学工具法对铁路机车车辆限界规进行检定。光学工具法属于比较测量法,测量结果缺少统一的相关参数,难以与设计指标对应。介绍一种铁路机车车辆限界规现场校准的新方法,该方法采用坐标测量方式对限界规进行校准,参照检定规程要求,结合轨道参数信息构建坐标系,直接获取关键测量点的坐标数据,通过与设计指标对比,判断限界规的尺寸偏差。

The existing Standard JJG （Railway） 180—2004 Clearance Detector of Rolling Stock Gauge for Stan-dard Gauge Railway,adopts optical tooling to verify the rolling stock clearance treadle. Optical tooling is a compari-son method of measurement. The measurement result is insufficient in unified relevant parameters,thus hard to cor-respond to the design index. The paper introduces a new way to calibrate the rolling stock clearance treadle. Such amethod adopts coordinate measurement to calibrate the rolling stock clearance treadle. It refers to the verification reg-ulations and requirements,combines the orbit parameter information to establish the coordinate system,obtains thecoordinate data on key measurement points directly and determines the dimensional deviation of the clearance treadleby making a comparison with the design index.