Dust fall auxiliary device for building intelligent engineering installation

The invention relates to the technical field of building engineering, in particular to a building intelligent engineering installation dust fall auxiliary device which comprises a base, four symmetrical pulleys are fixedly connected to the bottom face of the base, a pushing handle is fixedly connected to the side face of the base, and a water tank is fixedly connected to the center of the surface of the base. A motor is fixedly connected to the center of the top surface of the water tank, a rotating shaft is fixedly connected to the output shaft end of the motor, a rotating seat is rotationally connected to the top surface of the rotating shaft, and a clamping block is clamped with a clamping groove in the surface of a fixed circular truncated cone, so that the fixed circular truncated cone is connected with the rotating seat, a spray head rotates to spray water mist, and the dust falling efficiency is improved; in addition, the worker can also rotate a rotating handle to drive a first sliding sleeve and a sp