headframe

At the top of the shaft there is usually a structure called a headframe . it contains some of the machinery necessary for mining operation.
在井筒顶部通常都有一个叫作井架的建筑，其上装有一些采矿作业所需要的机械设备。
The ends of the wire ropes are respectively connected on suspension cages through fixed pulley blocks respectively installed on a headframe.
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 article describes the fabrication methods and quality control factors on Heavy Box-Type Steel Headframe .
本文介绍了大型箱型钢结构井架的制作方法及质量控制要素。