G-3工程钻机动力头双通道反循环主轴改装实践

The practice & improvement of unit head dual channel reverse circulation main shaft about G-3 Engineering driller

为满足贯通式潜孔锤反循环连续取芯钻进工艺的使用要求,将G-3型工程钻机动力头进行改装,新型动力头具有双通道主轴,且与原动力头传动结构实现了组配,可进行正、反循环两套主轴部件按需互换。改装后的G-3钻机在河南钼矿现场进行生产试验,效果良好。

A set of improvement on unit head of G - 3 Engineering driller are developed, in order to satisfy operating requirement of transfixion down - the - hole reverse circulation continuous coring drilling technology. New unit head have dual channel main shaft, and achieve the perfect interfix. It can be change as we need. We use the improved G-3 Engineering driller to proceed field test at Henan molybdenum minerals. The result is very fine.