集装箱装卸桥起升系统过加速保护

Over-acceleration Protection of the Hoisting System in Container Loading Bridge

集装箱装卸桥有时因起升调速系统失控发生坠箱事故。笔者根据物理学基本原理 ,采用可编程序控制技术 ,设计了一种新的安全保护装置。该装置应用于集装箱装卸桥的 PL C控制程序后具有过加速、过速度、过负荷、异常下降等保护功能 ,能防止坠箱事故 ,自动记录故障 ,进一步完善了集装箱装卸桥的安全保护系统 ,其中过加速保护是该系统中的一种新技术 ,实践证明效果良好 ,可应用于各种大型起重机械的安全保护系统。

Sometimes container falling accident happens because of losing control of hoist speed regulating system of the container crane. In the article new safeguard software was designed, according to basic physics theory and adopting programmable control technology. The software was possessed of safeguards against over-accelerating and over-speeding and overloading and exceptional falling and of prevention against container falling and of registering faults automatically. It perfected the safeguard system of container crane. The safeguards against over-accelerating is a new technology in the safeguard system of container crane and was proved effective by facts. The technology can be applied to safeguard systems of great cranes.