Long linear-array underwater floating platform

The invention relates to a long linear-array underwater floating platform, which contains a pressure-bearing floating drum, adjustable wing plates, underwater folding and unfolding devices, folding and unfolding cables, suction anchors, a cylindrical shell, joints, compound water-swellable rings, semicircular clasps, internal gears, external gears and driving motors. The pressure floating drum has a sectional structure. Two or more than two adjustable wing plates are arranged at equal intervals on the pressure-bearing floating drum. The adjustable wing plates all have hollowed-out structures. Two underwater folding and unfolding devices are respectively arranged under two sides of the axis of the pressure-bearing floating drum and are integrated with the suction anchors through the folding and unfolding cables. The floating platform is firmly fixed underwater through the suction anchors. The internal gears are fixedly integrated with the adjustable wing plates through a cementation technology. The external gears are tightly fixed on output shafts of the driving motors, which are positioned inside the pressure-bearing floating drum. By the adoption of the sectional structure of the pressure-bearing floating drum, its whole rigidity is raised and its winding degree is reduced. In addition, stability of the pressure floating drum in water can be enhanced by the arrangement of the adjustable wing plates.