南京铁路分局中华门车站维修组,发扬自力更生艰苦奋斗的革命精神,在车站领导与兄弟单位的大力支持与协助下,自己施工,制做成功一台30吨箱型龙门起重机。它的结构、特点是小车采用水平轮,受力较为均衡。经过静负荷试验(在吊重37.5吨时),下挠12毫米,负荷解除后全部恢复,无残余变形。经过使用证明性能良好,操作方 Nanjing Railway Branch Zhonghuamen Station Maintenance Group, carry forward the revolutionary spirit of self-reliance and arduous struggle, station leaders and brothers unit’s strong support and assistance, their own construction, making a success of a 30-ton box gantry crane. Its structure, characterized by a car using horizontal wheel, the force is more balanced. After the static load test (when hanging 37.5 tons), the next deflection of 12 mm, the lifting of the load after the resumption of all, no residual deformation. After the use of proven good performance, the operator