Tamping wagon double-string photoelectric measurement method

The invention relates to railway maintenance equipment, in particular to a tamping wagon double-string photoelectric measurement method, which is characterized in that two ends and the middle of a tamping wagon are respectively provided with a measurement part mounting point, one measurement part mounting point is provided with a laser transmitter, and the other two measurement part mounting points are provided with PSD photoelectric detectors; the two PSD photoelectric detectors are used for measuring the offset of the laser emitted by the laser emitter. Non-contact measurement can be achieved, errors caused by contact measurement are reduced, and laser chord line measurement has the advantages of being not prone to abrasion, high in precision, high in speed, convenient to use and the like. 本发明涉及铁路养路设备，尤其是指一种捣固车双弦光电测量方法，在捣固车的两端和中部位置各设有一测量部件安装点，其中一个测量部件安装点安装有激光发射器，另外两个测量部件安装点安装有PSD光电探测器，两个PSD光电探测器用来测量激光发射器发射的激光的偏移量。本发明可实现非接触测量，减少因接触测量带来的误差，并且使用激光弦线测量具有不易磨损、精度高、速度快及使用方便等优点。