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激光束中的射线倾向于保持相互平行的特性,使它成为理想的定线设施。1970年以前、主要用于管道施工定线,1971～1975年又应用于汽轮机部件的定线、遂道与矿井掘进、飞机场与跑道铺砌、高速公路中线栅栏及铁路轨道定线。以后又用于次级施工,如计算机基础与悬挂天花板的定平。加一个马达使激光旋转可得到依据平面,更增加了激光的用途,如混凝土模板定线、接近平坡的挖沟精确施工与放样排水线以及农场土地平整等。激光制导平地系统(见图)包括激光发射器、柱状激光接收器、微处理机、坡度指示器和
The rays in the laser beam tend to be parallel to each other, making them the ideal alignment facility. Before 1970, it was mainly used for pipeline construction. From 1971 to 1975, it was applied to the alignment of steam turbine components, tunneling and mine excavation, airport and runway paving, expressway median line fence and railway track alignment. Later used for secondary construction, such as computer foundation and suspended ceiling. Adding a motor to rotate the laser can be based on a flat surface that adds even more laser use, such as alignment of concrete formwork, precise construction of trenches near flat slopes, draining of drainage lines, and leveling of farm land. Laser-guided leveling system (see photo) Includes laser transmitter, laser receiver column, microprocessor, slope indicator and