起重机防碰装置优化改进

摘要

The paper introduces the common limit type anti-collision device currently,finds out existing problems and disadvantages,introduces three non-contact anti-collision device,such as ultrasonic,electromagnetic and laser ones,and achieves some conclusion by analysis and compar-ison of all sorts of devices.%对目前常用的行程限位式防碰装置进行了介绍，找出了其存在的问题及使用弊端，并介绍了超声波式、电磁波式、激光式三种非接触式防碰装置，通过对各种装置的分析比较，得出了一些结论。