Elevator safety protection device based on magnetic damping

The utility model belongs to the technical field, and particularly relates to an elevator safety protection device based on magnetic damping. Comprising a supporting base, a driving motor, a driving shaft, a brake drum, a magnetic damping ring and a protective cover, the protective cover is fixedly connected to the top end of the supporting base, a plurality of sliding grooves are formed in the side wall of the brake drum, limiting rods are slidably connected to the inner walls of the sliding grooves, and an annular groove is formed in the protective cover; a plurality of sliding blocks are slidably connected to the inner wall of the annular groove, and a cross rod is fixedly connected between every two sliding blocks; a sliding block is buffered and slowed down through a second spring, so that a cross rod has a buffering effect on a limiting rod before braking, the impact force of the elevator is relieved, the phenomenon of breakage and separation between the elevator and a traction rope or a transmission be