Mechanism for preventing external hanging type curtain wall from being damaged during hoisting

The utility model discloses a mechanism for preventing an external hanging type curtain wall from being damaged during hoisting, which comprises two fixed check blocks, the two fixed check blocks are connected through a connecting plate, and a clamping groove is arranged on each fixed check block in a rotating manner. The fixed check block is installed outside the steel frame, the clamping groove is rotationally connected to the fixed check block, and the lifting belt can be located in the clamping groove during installation, so that the lifting belt cannot freely slide on the fixed check block in the lifting process; the clamping groove can freely rotate on the fixed stop block, and the clamping groove can correspondingly rotate along with the change of the horizontal included angle of the lifting belt in the lifting process of the lifting belt; when the steel frame is completely hoisted, the acting point of the hoisting belt falls on the clamping groove and does not make contact with the shaft exterior trim