Pipe piece hoisting device

The utility model discloses a pipe piece lifting device which comprises a cross beam arranged at the top of a supporting leg, a hook arranged below the cross beam, a moving device arranged on the cross beam and used for driving the hook to ascend, descend and transversely move, and a connecting mechanism arranged on the hook and used for connecting pipe pieces. The connecting mechanism comprises a mounting base, two sliding bases arranged at the two ends of the bottom of the mounting base and slidably connected with the mounting base, two first vacuum suction cups hinged to the bottoms of the two sliding bases correspondingly, and a second vacuum suction cup hinged to the middle of the bottom end of the mounting base. The mounting base is further provided with a driving device used for driving the two sliding bases to move in the direction close to each other or away from each other, and an adjusting device used for adjusting the distance between the first vacuum suction cup and the mounting base. In conclusi