Novel automatic locking fluid loading and unloading crane pipe

The utility model relates to the technical field of loading and unloading crane pipes, in particular to a novel automatic locking fluid loading and unloading crane pipe which comprises a first crane pipe and a second crane pipe, the second crane pipe matched with the first crane pipe is arranged on one side of the first crane pipe, and connecting flanges are fixedly arranged at the connecting positions of the first crane pipe and the second crane pipe. The first crane pipe and the second crane pipe are opposite through the two sets of connecting flanges, the air cylinder drives the rotating rod and the arc-shaped plate to slide through the moving plate, the rotating rod drives the rolling wheel to move in the through groove, and in the moving process of the rolling wheel, due to limiting of the through groove, the rolling wheel can be locked through the locking mechanism. The rotating rod rotates and drives the arc-shaped plate to close and slide towards the direction of the connecting flange, so that automat