大型塔式起重机起升机构电气调速

Electrical speed regulation of lifting mechanism for a large tower crane

所介绍的大型起重机起升机构采用了双电动机快慢速运行,经组合可有四种速度,既能提高起重机生产效率,又节约能源。文中着重介绍了其电气调速线路原理及特点。

In this paper, the mentioned lifting mechanism of a large tower crane features dual motor speed regulation concept. Through the combination of motors gives 4 different lifting speeds, thus raising crane productivity and saving energy comsuption. The paper explains the principle and features of the speed regulation circuit.