Safe evacuation platform for subway tunnel

The utility model provides a safety evacuation platform for a subway tunnel, which comprises a bottom lifting beam, a fastener is arranged on one side of the lower end face of the bottom lifting beam, a fastening hole is arranged on the fastener, the fastening hole is fixed with the side wall of the tunnel through a bolt, and the bottom lifting beam is fixed on the side wall of the tunnel. A rectangular groove is formed in the middle of the bottom lifting beam, a clamping edge is arranged at the edge of the interior of the rectangular groove, the clamping edge is of a rectangular-ambulatory-plane structure with the rectangular section, a supporting structure is clamped to the upper side of the clamping edge, and the upper side of the clamping edge is clamped to the edge of the fixing frame; the purpose of bearing pedestrians can be achieved through the supporting ribs, meanwhile, the weight of the fixing frame is reduced, the situation that the bottom lifting beam is inclined due to the large weight is preven