有2台进口的ＭＤ2 2 0 0 -ＴＢ3 0型塔带机主要用于国内某大型水电建设工地的大坝混凝土浇筑作业 ,在功能上它主要由塔式起重机和带式输送机 2部分组成。塔带机有浇筑和起重 2种作业工况。在浇筑工况时 ,起重机工作机构锁定在低速状态 ,输送机工作 ;在起重作业工况时 ,塔式起重 There are 2 imported MD2 2 0 0 -TB3 0 type tower machine is mainly used for large-scale hydropower construction site in the country dam concrete pouring operation, it is mainly composed of tower crane and belt conveyor 2 parts. Tower machine has pouring and lifting 2 kinds of job conditions. In the pouring condition, the crane working mechanism locked in a low speed, the conveyor work; in lifting working conditions, tower crane