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一、问题的提出我国地方钢铁企业中大多数高炉都在100～300m~3之间。按我国的传统叫法即中小高炉。在这些中小高炉中,上料设备均采用料车卷扬调速形式。这种调速方式基本分为:绕线式异步电动机回路串电阻调速和SCR—D直流调速两种。对于前者,它的优点是:系统结构简单,调试容易;其不足之处是这种调速方法在料车启动瞬时冲击电流大,易损机械设备,卷扬钢丝绳小股易拉断。且停车速度也随料车装料的多少而变化难以控制,故常造
First, the problem raised Most local blast furnace in local steel companies are between 100 ~ 300m ~ 3. According to our traditional method that small and medium-sized blast furnace. In these small and medium-sized blast furnaces, feeding equipment are used car hoist speed form. This speed control method is basically divided into: winding asynchronous motor circuit resistance and SCR-D DC speed control two. For the former, its advantages are: the system structure is simple and the debugging is easy; the shortcoming is that this speed regulation method is easy to break when the starting current of the car starts to impact current greatly, the fragile mechanical equipment and the hoisting wire ropes are easily broken. And the parking speed also changes with the loading of the car is difficult to control, so often made