The invention relates to a safe perpendicular conveying device, in particular to a vertical shaft suspension cage. The drum type safe suspension cage comprises a suspension cage body and a lifting steel rope. The drum type safe suspension cage is characterized in that drums are arranged at two ends of a suspension cage transverse beam, safe steel ropes are wound on the drums, and the other ends of the safe steel ropes are fixedly arranged on fixing anchor points above a vertical shaft. A braking device is fixedly arranged at one end of each drum, a ratchet mechanism is arranged on a drum shaft at the other end of each drum through a friction coupler, the tail end of each drum shaft is connected with a flexible shaft through a flexible shaft coupler, and the other end of each flexible shaft is fixedly connected with a pulley shaft. The drum type safe suspension cage has the advantages that the safe steel ropes and the safe steel rope drums are arranged on the suspension cage transverse beam on the top of the suspension cage body, the suspension cage can be prevented from falling down when the lifting steel rope is broken, safety hazards of working staff is reduced, and working efficiency is improved. The problems that material conveying by the suspension cage is not safe and losses happen to personnel and equipment are solved, and safe and quick conveying of construction materials of the vertical shaft from top to bottom is achieved.