Safe lifting device based on railway construction and using method thereof

The invention discloses a safe lifting device based on railway construction and a using method thereof.The safe lifting device comprises a safe lifting device body, a fixing plate, a side blocking structure and a telescopic rod, the fixing plate is arranged at the bottom of the outer side of the safe lifting device body, and a mounting groove is formed in the fixing plate; a first double-shaft telescopic rod is fixedly mounted in the mounting groove, and clamping plates are fixedly mounted at the output end of the first double-shaft telescopic rod and located on the front face and the back face of the fixing plate. The side blocking structures are arranged on the two sides of the fixing plate and comprise side baffles, first sliding grooves are formed in the front faces and the back faces of the inner sides of the side baffles, telescopic rods are fixedly installed on the front faces and the back faces of the tops of the side baffles through connecting plates, and the output ends of the telescopic rods are fi