Slowly descending device for controlling falling speed from high-rise building

The utility model provides a slowly descending device for controlling the falling speed from a high-rise building. The device is used for the construction operation of the high-rise building and the high-altitude falling of personals in case of emergency, and comprises a nut, a rivet, a main shaft pin cylinder, a protective sleeve, a small rivet, a main shaft pin, a housing bracket, a bolt, a brake cable sleeve, a connecting part, a nut, a main shaft, a spring, a two-way clamping piece, a metal plate sheet, a bolt, a rope, a hand brake, a brake cable, a vest and a safety belt, wherein the two-way clamping piece is connected with the main shaft through rivets, the spring is arranged on the main shaft, the metal plate sheet is connected with the two-way clamping piece through the bolt and the nuts, the brake cable is fixed at the other end of the two-way clamping piece, the brake cable sleeve and the connecting part are connected to the housing bracket through the bolt and nuts, the housing bracket is connected