Steel structure safety rope suspension device and using method

The invention relates to the technical field of steel structures, in particular to a steel structure safety rope suspension device and a using method. The problems that the lifting stability is poor and the manual construction burden is improved are solved. The device comprises an installation plate and a bolt, an installation opening is formed in the installation plate, a davit is arranged in the installation opening in a penetrating mode, the two ends of the davit both penetrate out of the installation plate, a moving mechanism used for driving the davit to move axially is arranged on the installation plate, and a tightening mechanism is further arranged on the installation plate. And the tightening mechanism is used for driving the bolt to axially move towards the davit and tightening the bolt on the mounting plate. The mounting stability of the davit is effectively guaranteed, the davit is stably fixed through threaded connection at the two ends, the davit can be automatically driven to move, and manpower