The invention discloses a telescopic iron
roughneck, which belongs to the technical field of
wellhead automation equipment, and comprises a base, a slewing mechanism, a stand column, a
pulley body, a telescopic rod
assembly, a clamp body support frame, a lower clamp box and an upper clamp box, the stand column is fixed on the base through the slewing mechanism, a guide rail is arranged on the stand column, and the tackle body is arranged on the guide rail; one end of the telescopic rod
assembly is fixed to one side of the
pulley body, and the other end of the telescopic rod
assembly is provided with a clamp body supporting frame. The sliding trolley is provided with a lifting mechanism, the lower clamp box and the upper clamp box are arranged on the clamp body supporting frame, and the upper box body can rotate relative to the lower box body. Oil cylinder frames are arranged on the two sides of the lower clamp box, the buckle
punching oil cylinders are installed on the oil cylinder frames, and
piston rods of the buckle
punching oil cylinders are hinged to the two sides of the upper clamp box; the upper clamp box is provided with a butt clamp mechanism and a
spinning mechanism; the lower clamp box is provided with a lower drilling tool clamping clamp and a lower drilling tool clamping oil cylinder. In conclusion, the device is compact in overall structure, small in size in the height direction and large in telescopic
stroke.