瓦斯抽采钻机连续装卸钻杆装置设计

Design of equipment continuously loading and unloading drill rod on gas drainage drilling rig

针对当前瓦斯抽采钻机频繁启停易使钻孔内煤粉堆积、煤孔壁坍塌,进而导致钻杆断裂、钻具丢失、钻孔无法使用等问题,设计了一种新型瓦斯抽采钻机连续装卸钻杆装置,阐述了该装置总体设计方案及钻杆接续工作过程。瓦斯抽采钻机连续装卸钻杆装置主要由前后动力头、测速装置、夹持定位装置、给进装置等组成,可实现无需停钻而连续连接下一根钻杆,减少钻机频繁启停对孔壁的破坏。基于ABAQUS有限元软件的装置力学性能分析结果表明,该装置基座、导轨等关键部分构件的安全系数较高,可满足使用要求。

For the problem that existing gas drainage drilling rig usually caused coal particles to heap in drilled hole,hole wall to collapse and further accidents such as drill rod fracturing,drilling tool losing,drilled hole being unavailable and so on because of frequent start-stop,a new type of equipment continuously loading and unloading drill rod on gas drainage drilling rig was proposed.The whole design scheme of the equipment as well as working process of drill rods connecting one by one were focused on.The equipment has structural components including former and rear power heads,speed measuring device,clamping positioning device,feeding equipment,etc.,which can realize continuously connecting to the next drill rod without drilling stopping,so as to reduce the damage to drilled hole wall caused by frequent start-stop of the drill.The mechanical property analysis results of the equipment based on ABAQUS element software show that the key structural components of the equipment such as pedestal,guideway and so on have high safety coefficient and meet application requirements.