Vertical shaft lifting over-winding over-discharge buffering protection device

The utility model discloses a vertical shaft lifting over-winding over-discharge buffering protection device, and belongs to the technical field of mine equipment. The buffering protection device comprises four buffering mechanisms, supporting cage mechanisms and connecting beams, the buffering mechanisms are of H-shaped structured, slides are arranged inside the buffering mechanisms, buffering shaft blocks are equidistantly and fixedly mounted on the slides, each supporting cage mechanism comprises a supporting cage beam and trough plates, two ends of each supporting cage beam are fixedly connected with two trough plates by the aid of bolts, rollers are mounted on two sides of each supporting cage beam at the joint, non-return claws are mounted at two ends of each supporting cage beam respectively, supporting claws are mounted inside the trough plates and are consistent in horizontal height, the supporting cage mechanisms are mutually fixed by the connecting beams, and the trough plates of the supporting cage mechanisms are movably mounted in the slides of the buffering mechanisms. The buffering protection device has the advantages that the buffering protection device is mounted on a derrick, anti-collision and buffering functions of a container are sufficiently achieved, and the device is simple in structure, low in production cost, small in occupied space and convenient to mount.