论文部分内容阅读
在多层建筑施工中,大量运用井字架作为垂直运输工具。带有缆风绳的井字架,在城市中心区施工,由于建筑物密集,施工场地狭窄,不能架设井架缆风绳。为此,我们制作了附墙式钢管井字架,井架截面为长方形,可用吊篮运输较长的构件,因此不设吊臂,吊篮设置防坠及冲顶限位等安全装置。经使用,井架稳定、工作可靠,现介绍如下。一、性能井架高25.2m,最高为30.6m;最大起重量0.75t,吊篮自重为1 t;提升高度18m,最高23.6m;运输最大构件长度4.2m,宽度不大于1.2m。二、构造整个井架及吊篮全部使用φ48×4钢管
In the construction of multi-storey buildings, a large number of wells are used as vertical transport tools. Tic Tacah with cable wind ropes is constructed in the center of the city. Because of the dense buildings and the narrow construction site, derrick cable wind ropes cannot be erected. To this end, we have produced wall-welded steel pipe derricks. The cross section of the derrick is rectangular, and it can be used to transport longer components. Therefore, there is no boom, and the basket is equipped with safety devices such as anti-dropping and ceiling limiting. After use, the derrick is stable and the work is reliable. Now it is introduced as follows. First, the performance derrick height 25.2m, the highest is 30.6m; the maximum lifting weight is 0.75t, the hanging basket’s own weight is 1t; the lifting height is 18m, the highest is 23.6m; the maximum transporting member length is 4.2m, the width is not more than 1.2m. Second, the construction of the entire derrick and basket all use φ48 × 4 steel pipe