The safety of a main well headframe would be reduced significantly, due to increased loading capacity and higher vibration frequency in a coalmine.
由于煤矿主井井架提升能力的增加，引起井架杆件受力增大，受迫振动频率增大，导致安全性能降低。
Utilizing the everlasting headframe might effectively cut down the mine building construction period and had beneficial result and economic results.
利用永久井架凿井可以有效地缩短矿井建设工期。为业主带来良好的社会效益和经济效益。
An on-line monitoring and control system for headframe hoisting was developed according to stress analysis in headframe hoisting and computer control technology.
根据井架吊装过程受力分析，运用计算机控制技术，研制开发出了井架起吊在线监控系统，详细介绍了系统方案设计、硬件配置、软件设计及具体应用。
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。
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。
应用推荐