用经纬仪测量转台回转轴线水平度的方法

Levelness Measurement Method about Horizontal Axis Line with Theodolite

为了准确测试水平轴系回转轴线的水平度,将反射镜安装在水平轴系的轴端,用经纬仪对准反射镜,旋转回转轴系,使经纬仪与反射镜准直,并记录经纬仪的竖直角;将经纬仪的竖直轴和俯仰轴翻转180°,对准反射镜后旋转轴系,记录竖直角;计算出回转轴线的水平度。该方法可自动补偿反射镜与回转轴线的垂直度误差和经纬仪俯仰轴的零位误差,提高回转轴线水平度的测试精度。通过实测与误差分析验证了方法的可行性。

In order to measure the levelness of the rotating axis line of the horizontal axis system accurately,a reflector is installed on the end of the horizontal axis,and a theodolite is aligned with the reflector.Then vertical angle readouts of the theodolite are recorded while axis system rotating to certain angular positions.Subsequently,both the vertical and horizontal axis of the theodolite rotated 180°,then aligned to the reflector once more,and repeated the above procedures.Finally the levelness of the rotating axis line is calculated by the measurement data.In this way,the perpendicularity of the reflector surface versus the rotating axis line,the zero position error of the pitch axis of the theodolite are compensated automatically,which improve the measurement accuracy.The method is verified by experiment and error analysis.