论文部分内容阅读
在吊装作业中,起重机的起升质量和作业半径是2项关键指标,为了充分发挥大型履带起重机的起重能力,在起重机上安装超起装置,即在大型履带起重机的主臂和扳起架之间加装超起桅杆,在超起桅杆下悬挂超起配重,可提高履带起重机起重能力和起吊时的稳定性。加装超起桅杆后,可改善主臂与扳起架的受力状况,减少起重机主臂受力和变形。本文介绍2种超起装置,即移动拖车式超起装置和悬浮托盘式超起装置的结构及其选用方法。
In lifting operations, crane lifting quality and operating radius are two key indicators, in order to give full play to the lifting capacity of large crawler cranes, super hoisting device installed on the crane, that is, in the large crawler crane boom and wrench Between the installation of super-mast, super-mast hanging under the ultra-weight, can improve crawler crane lifting capacity and lifting stability. After the installation of super mast, can improve the main arm and wrench frame stress conditions, reduce the crane main arm force and deformation. This article describes two kinds of super-lifting device, that is, the structure of the mobile trailer-type super-lifting device and suspension tray-type super-lifting device and its selection method.