Unmanned aerial vehicle flaw detection device for pipeline

The invention discloses an unmanned aerial vehicle flaw detection device for a pipeline, and relates to the technical field of unmanned aerial vehicle flaw detection, the unmanned aerial vehicle flaw detection device comprises an unmanned aerial vehicle body, and the bottom end of the unmanned aerial vehicle body is provided with a lifting adjusting mechanism; two connecting arms are symmetrically arranged at the bottom end of the lifting adjusting mechanism, and the lifting adjusting mechanism is used for adjusting the height of the connecting arms; and at least one flaw detection probe is arranged on the inner surface of each connecting arm. The lifting adjusting mechanism is arranged, power is provided through the servo motor, torque in the horizontal direction is converted into rotating motion of a ball nut through a worm and a worm gear, the ball nut can drive the ball screw to move up and down after rotating, and finally the up-down motion of the connecting arms is achieved. And after the connecting arm