摘要
国内外常用于检测轨道几何参数的“T”形结构轨检小车在线路曲线段走行时，存在因结构原因而产生的假轨距、假水平问题，其原理性误差可达10“mm量级。相对于轨检小车行业标准规定的轨距、水平测量允差±0．3-±0．5mm而言，该误差不可忽略，故控制与消除该误差的影响已成为新修订的轨检小车计量检定规程的新增项目。基于此，设计一种”工”形结构的轨检小车，该结构直接测量左右轨作用边，故其因结构因素造成的轨距、水平原理性误差仅为10^-4mm到10^-5mm量级，可显著提高轨距、水平测量精度。
There are problems of false rail gauge and level measurement values when inspecting track geometry parameters along curved railway line by using T-shaped track inspection instrument which is widely used in domestic and abroad. It is the structure itself of this kind of instrument that results in the error. This principle error may reach up to 10^-1 mm; then compared with the rail gauge and level measurement＇s permissible error values of ±0.3 to ±0.5mm which are stipulated in industry standard code, this error should not be neglected. So controlling and eliminating the influence of this error has become a new subject in newly revised measurement verification standard code of track inspection instrument. For this reason, this research developed an H-shaped track inspection instrument. With this new instrument, the action edges of both the left and right rails can directly be measured, so the principle error on rail gauge and level measurement caused by structure itself of the new instrument is only 10^-4mm to 10^-5mm; therefore the measurement accuracy of rail gauge and level can be significantly improved.
出处
《铁道标准设计》
北大核心
2014年第7期35-38,共4页
Railway Standard Design
基金
江西省科技支撑项目(工业领域)(20112BBE50040
20132BBE50036)
关键词
轨检仪
轨道检测
轨距
水平
传感器
track inspection instrument
track inspection
rail gauge
rail level
sensor
