Drill rod power tongs

The utility model belongs to the technical field of drill rod screwing and unscrewing, and particularly relates to drill rod power tongs which comprise a mounting frame, a movable roller, a plurality of drill rod clamping plates and a driving rotating wheel, the driving rotating wheel can be rotatably mounted on the mounting frame, the movable roller can be rotatably mounted in the driving rotating wheel, and the drill rod clamping plates used for clamping are mounted in the movable roller. According to the power tongs, the installation frame, the movable roller, the multiple drill rod clamping plates and the driving rotating wheel are jointly matched, the contact area of the power tongs during drill rod clamping is increased through the multiple drill rod clamping plates, and therefore the drill rods can be clamped more stably; and when the first convex block extrusion groove and the second convex block extrusion groove abut against and support a first convex block and a second convex block arranged on the d