Gravel crushing device for water conservancy construction

The utility model discloses a gravel crushing device for water conservancy construction, which comprises an outer machine body, a bucket-shaped machine box, a first-stage crushing device, a second-stage crushing device and a third-stage crushing device, the bucket-shaped machine box is welded on the inner wall of the outer machine body, and a driving motor is fixedly mounted in the bucket-shaped machine box; the output end of the driving motor is rotationally connected with a driving gear, a driving wheel is welded to the axis of the driving gear, a belt is in lap joint with the outer surfaceof the driving wheel, the driving wheel is movably connected with a transmission wheel through the belt, a transmission gear is welded to the center of the transmission wheel, and a driven gear is meshed with the top of the transmission gear. According to the gravel crushing device for water conservancy construction, through the arrangement of the filter screen, discharging is more uniform, the requirements of operators a