串级调速在起重机上的应用

The Application of Cascade Speed Regulation Units in Hoists

调速是起重机电气传动的最主要要求。交流电机可控硅串级调速装置适用于各种起重机的大车、小车、回转、变幅和起升各机构，具有无级调速范围大、调速机械特性硬和可以节电的优点，是起重机调速的一种好方法。

Speed regulation is a key of hoist electrical drive. Sillion controlled cascade speedregulation gear of alternating - current motor is applicable to of all kinds mechanisms of hoisting,revolution. varible amplitude etc. and has wide range of stepless speed regulation. goods mechanicalcharacteristics of speed regulation and advantages Of saving in energy. It is an effective method of hoistspee dregulation.