The shortcomings existing in electrical control system in preliminary mine hoist are analyzed, and the application and effectiveness of PC in hoistingshaft are summarized.
分析了原矿井提升机电控系统存在的缺陷并阐述可编程序控制器（ PC）在矿用提升机中的应用及效果。
2
The circular tube belt conveyor is a new method for hoisting coal in a vertical shaft.
圆管胶带输送机是竖井提升煤炭的一种新方法。
3
The hoisting and transport systems of its main shaft are reformed in 2005.