Hoisting device capable of avoiding falling off

The utility model relates to the technical field of steel structure installation, and discloses a lifting device capable of avoiding falling off, which comprises a base, a vertical rod is connected to the inner wall of the base in a sliding manner, the vertical rod penetrates through the base, and a lifting lug is fixedly mounted at the top of the vertical rod. Hooks of an external hoisting machine are matched with the lifting lugs to hoist the base, the lifting lugs pull the vertical rods and the limiting blocks upwards during hoisting, meanwhile, the telescopic rods, the swing arms and the connecting rods are matched to enable the two sets of sliding plates to slide towards the ends close to the clamping plates, and ejector blocks are driven to abut against the side walls of the clamping plates. The two sliding plates are matched with the two jacking blocks to clamp the two clamping plates, the clamping plates are prevented from loosening in the I-shaped steel hoisting process, safety accidents can be effec