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 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。
Based on the members' stress in the new and original load conditions, the evaluation and analysis on the actual state of headframe was obtained.
通过增大提升能力前后不同荷载下的构件应力对比，对增大提升能力后的井架的运行状况做出预估与分析。
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。
The original introduced some kinds of successful means utilizing the everlasting headframe to dig a well, and analysed the features and applicable condition.
介绍了利用永久井架凿井的几种成功的方式，并简单分析了这几种方式的优劣及适用条件。
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。
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。
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