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

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.