Gravel transportation device

The utility model relates to the technical field of ore extraction, in particular to a gravel transportation device which comprises a charging box, a supporting frame and a driving roller, the left end of the charging box is fixedly connected with the supporting frame, the inner side of the upper end of the supporting frame is rotatably connected with a threaded shaft, and the outer side of the threaded shaft is spirally connected with a lifting block. The inner end of the lifting block is rotationally connected with a rotating frame, and the inner side of the rotating frame is rotationally connected with a conveying belt. The threaded shaft can drive the lifting block to move up and down through rotation of the first motor, so that the upper end of the rotating frame can move up and down; the lower end of the rotating frame can move left and right under the action of supporting rollers, meanwhile, the bottom of the rotating frame can be limited through a limiting block and a limiting sliding rod so that the