钻进方向可调的高压气射流钻具

传统钻机大多依靠连接在钻杆前端的旋转钻头上的硬质合金块切割实现钻进,随着钻孔的钻进其钻头会被磨损。现介绍一种新型的钻进方向可调的高压气射流钻具,其钻杆不需要旋转即可进行钻进,解决了长钻孔施工时需要大转矩的问题;钻具的钻杆上引入了为钻杆提供前进或后退动力的行进机构,解决了长钻孔施工时钻杆前后运动动力不足的问题;钻具的钻头通过气体驱动旋转并释放出高压气体流,产生类似于水刀的效果,最终达到切削煤层或岩层的目的。方向可调的高压气射流钻具的新功能,能够克服传统钻机存在的诸多缺陷。

High-pressure Air Jet Drilling Tool with Drilling Direction Adjustable

Most of traditional drilling machines rely on the carbide alloy piece on the rotary drill bit of the drill rod to realize a drilling,but the drill bit will be abraded with the drilling advance.A new high-pressure air jet drilling tool with drilling direction adjustable was developed,its drill rod needn't to rotate,but can drill,this thus solved the problem that a large torque moment is required for long-hole drilling.The travel mechanism for advance and retreat of the drill rod was provided on the drill too...