Ceiling storage rack

A ceiling storage rack, wherein the rack comprises:

• a ceiling fixing assembly;
• a rotary shaft, which is rotatably connected at a side of the ceiling fixing assembly, and two winding portions rotating in synchronization with the rotary shaft are disposed at both sides of the rotary shaft comprising a first winding portion and a second winding portion;
• a drive mechanism, which is used to drive the rotary shaft to rotate;
• two pulleys comprising a first pulley and a second pulley, and the two pulleys are connected at another side of the ceiling fixing assembly and respectively disposed corresponding to the two winding portions;
• a placement platform, disposed below the ceiling fixing assembly;
• a first wire group, comprising a first winding wire and a second winding wire, and the first winding wire is connected with a first connection point of the first winding portion;
• a first end of the first winding wire is connected with the placement platform, and a second end of the first winding wire runs over the first pulley and then is connected with the placement platform;
• the second winding wire is connected with a second connection point of the first winding portion;
• a first end of the second winding wire is connected with the placement platform, and a second end of the second winding wire runs over the first pulley and then is connected with the placement platform;
• the first connection point and the second connection point are respectively located at both ends of the first pulley to enable the first winding wire and the second winding wire to be simultaneously wound toward a center of the first winding portion or unwound from the center of the first winding portion toward both ends;
• a second wire group, comprising a third winding wire and a fourth winding wire, and the third winding wire is connected with a third connection point of the second winding portion;
• a first end of the third winding wire is connected with the placement platform, and a second end of the third winding wire runs over the second pulley and then is connected with the placement platform;
• the fourth winding wire is connected with a fourth connection point of the second winding portion;
• a first end of the fourth winding wire is connected with the placement platform, and a second end of the fourth winding wire runs over the second pulley and then is connected with the placement platform;
• the third connection point and the fourth connection point are respectively located at both ends of the second pulley to enable the third winding wire and the fourth winding wire to be simultaneously wound toward a center of the second winding portion or unwound from the center of the second winding portion toward both ends.