Atomized water curtain dust falling device for tunnel construction

The utility model relates to the technical field of tunnel dust falling equipment. The atomized water curtain dust falling device for tunnel construction comprises a water curtain, the upper ends of the four stand columns are fixedly connected with two supporting rods arranged in parallel. And the two ends of the two supporting rods are fixedly connected with two parallel arc-shaped rods, the outer side of one arc-shaped rod is fixedly connected with a stepping motor, the driving end of the stepping motor is rotationally connected with a rotating shaft parallel to the supporting rods, and theend, away from the stepping motor, of the rotating shaft is fixedly connected with a threaded rod. According to the utility model, the structure is simple, stepping motor by starting, driving threadedrod to rotate, the axial rotation of the nut block is limited by the limiting mechanism; therefore, the nut block moves forcibly to drive the hollow pipe fixed to the mounting rod to move, the hollowpipe moves back and forth