Differential falling protector for high-altitude operation of civil construction engineering

The utility model discloses a civil construction engineering high-altitude operation differential falling protector which comprises a shell, the inner bottom wall of the shell is fixedly connected with a motor base, the inner wall of the motor base is fixedly connected with a high-load motor, and the output end of the high-load motor is fixedly connected with a main shaft. When high-altitude operation personnel slip and fall off, the falling protector works, namely a ratchet wheel and a pawl in the built-in ratchet wheel and pawl outer wheel works to lock the reverse direction of rope releasing, so that the operation personnel are hung in the air, then a high-load motor is started to enable a main shaft to rotate, and a transmission shaft in a transmission gear is driven by a main gear to rotate; the small gear drives the rotating shaft in the auxiliary gear to rotate, then the built-in ratchet wheel and pawl outer wheel rotates along with rotation of the rotating shaft, a steel cable is wound, an operator is