钢丝绳的线头各自通过安装在井架上的定滑轮组，又各自连接到吊笼上。
The ends of the wire ropes are respectively connected on suspension cages through fixed pulley blocks respectively installed on a headframe.
完成了安装顶驱后反扭矩的计算和井架力学分析，并提出了井架结构的改造方案。
Having completed calculation of top drive counter-torque and mast mechanics analysis, an upgrading proposal has been put forward.
灯塔的顶部安装了一些典型的装置如走廊、人字形轻便井架、旗杆、分段装配玻璃。
The top of the beacon is fitted with the typical attributes such as a gallery, a mast, a flagstaff, and segmented glazing.
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