Automatic positioning and fastening device for overwater floating body during pier sitting

The invention provides an automatic positioning and fastening device for an overwater floating body during pier sitting. At least one bracket body is mounted on each of the two sides in the length direction of the floating body; transmission shaft holes are formed in the bracket bodies; fixing shafts are mounted on the transmission shaft holes and mounted on bracket bases; the bracket bodies rotate around the fixed shafts; positioning pin holes matched with automatic positioning pins are further formed in the bracket bodies, and the automatic positioning pins are mounted on supports; and the bracket bases and the supports are both mounted on a deck plane, and supporters are mounted between the deck plane and the bracket bodies. The automatic positioning and fastening device has the characteristics that the floating body is surrounded by the bracket bodies automatically so that transverse-inclination straightening and automatic aligning and centering of the floating body in the pier-sitting process can be achi