Multifunctional movable sand barrier

The utility model relates to the technical field of natural disaster prevention equipment, and discloses a multifunctional movable sand barrier which comprises a base, supporting columns are fixedly connected to the left side and the right side of the upper surface of the base respectively, first concave grooves are formed in one sides of the opposite faces of the two supporting columns respectively, a mounting frame is fixedly connected to the middles of two first convex blocks, and the mounting frame is fixedly connected with a second convex block. A sand baffle is fixedly connected to the interior of an open groove in the middle of the mounting frame, rotating pipes are rotationally connected to the middles of the upper walls of the mounting grooves, driven gears are fixedly connected to the lower ends of the rotating pipes, threaded holes are formed in the middles of the driven gears, and threaded insertion columns are in threaded connection in the threaded holes; and one sides of gear teeth of the driven