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九、大跨距RMG或龙门吊大车纠偏监控装置 随着大车跨距的加大,由于机械(岸桥、场桥)的几何中心与质量中心不重合。因此在大车起制动时,因惯性力的作用,整机有扭转趋势,即发生“啃轨”现象。由于大车的行走速度不高(45米/分),微小的“啃轨”问题是可以被接受的。 在RMG(轨道或场桥)日益受到重视的今天,由于它跨距大,行走速度高,必须处理好它的“啃轨”问题。ZPMC正在研制开发如下三种防“啃轨”措施: 1) 利用全站仪测量。全站仪是一种利用激光原理高精度测量仪器,当两侧出现偏差给出信号,调整两侧大车转数予以纠
Nine, large span RMG or gantry crane correction device With the increase of car span, due to the mechanical (quay bridge, field bridge) geometric centers and centers of quality do not coincide. Therefore, when the cart starts braking, the whole machine has a tendency of twisting because of the inertial force, that is, the phenomenon of “eating the rails” occurs. Due to the speed of the cart is not high (45 m / min), the problem of tiny “eating rails” is acceptable. Today, as the RMG (orbit or bridge) is gaining more and more attention, it has to handle its “gnawing” issue because of its large span and high walking speed. ZPMC is developing the following three kinds of anti-gnawing track measures: 1) the use of total station measurement. Total Station is a high-precision laser measuring instruments, when there is deviation on both sides of the signal, adjust the car on both sides to correct the number of revolutions