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近年来,国外推出一种应用激光技术控制的新型农田基本建设机具——激光平地机。使用这种机具平整地块,精度可达到±3厘米,每个工作班次(8小时)可平整土地75～150亩(5～10公顷)。与推土机相比,平地效率提高3～5倍,每小时节油1200克。美国生产的卡迈克345-C型激光平地机,由机身和铲运斗两大部分组成。机身包括动力机构、控制箱和驾驶台。控制箱用来控制铲运斗的升降。铲运斗用来挖运土方,其横梁上装有激光接收系统,用来接收激光发射机发射出来的红光。机身与铲运斗之间连接有3根油管,控制斗的升降和接收系统由液压油缸控制。驾驶台上装有控制杆、接收盒、指示灯等设备。接收系统外层是一个有机玻璃制成的圆柱罩,内装可上、下滑动的游标卡尺,自动接收由激光发射机发射出来的红光束,并通过液压机构传导后反映在接收盒
In recent years, a new type of farmland capital construction equipment-laser grader-which is controlled by laser technology is introduced abroad. Use this machine to flatten the block, the accuracy can reach ± 3 cm, each working shift (8 hours) can land 75-150 acres (5 ~ 10 hectares). Compared with the bulldozer, the flat efficiency increased by 3 to 5 times, saving 1200 grams per hour. The Carmarthen 345-C laser grader manufactured in the United States consists of two parts, the fuselage and the scoop bucket. Fuselage including power, control box and bridge. Control box used to control the bucket lift. The scoop bucket is used to excavate earthwork, and the beam is equipped with a laser receiving system to receive the red light emitted by the laser transmitter. Between the fuselage and the scoop bucket connected to the 3 tubing, control bucket lifting and receiving system controlled by the hydraulic cylinder. The bridge is equipped with joystick, receiver box, lights and other equipment. The receiving system is the outer layer of a cylinder made of plexiglass cover, built-in sliding slide caliper, automatically receive the laser beam emitted by the transmitter, and transmitted through the hydraulic mechanism reflected in the receiving box