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信号机按高度分为高柱和矮柱2种。在电气化区段,由于接触网是承载17kV大电流的特殊导线,所以要求设备距接触网的距离大于2m,也就是高柱信号机的外边缘与接触网之间必须保证大于2m的最小安全距离。而这个距离如何测试,就成为设计人员的一大难题。由此研制开发了信号机激光测距仪
Semaphore according to the height is divided into two kinds of high column and short column. In the electrification zone, since the catenary is a special conductor carrying a high current of 17 kV, it is required that the distance between the equipment and the catenary be greater than 2 m, that is, the minimum safety distance of more than 2 m must be ensured between the outer edge of the high-pillar signal and the catenary . How to test this distance has become a major problem for designers. Thus developed a signal laser range finder