论文部分内容阅读
1 问题的提出目前塔式起重机起重臂回转定位制动器的形式有两种 ,一种是类似汽车的液压制动器[1] ,另一种是盘式电磁制动器。由于电磁制动器具有作用滞后小、易于连接、操作方便等特点 ,目前被广泛使用。常见的电磁制动器结构和布置位置如图 1所示 ,由图可以看出 :盘式电磁制
1 PROBLEM PROBLEM There are two types of swing positioning brakes currently used in tower cranes. One is a car-like hydraulic brake [1] and the other is a disc-type electromagnetic brake. As the electromagnetic brake has a small effect of lag, easy to connect, easy to operate and so on, is currently widely used. Common electromagnetic brake structure and layout location shown in Figure 1, can be seen from the figure: Disk electromagnetic