The working principle of a chain bucket dredger is to place the lower end of the bucket bridge underwater to a certain depth, so that it comes into contact with the flowing soil layer. Then, driven by the upper guide wheel, make the bucket chain continuousRunning, driving the bucket mud on the bucket chain, dredging and loading it, then lifting it out of the water surface with the rotation of the bucket chain and conveying it to the top of the tower. After changing direction through the upper guide wheel, the sediment in the bucket is poured into the mud trough in the bucket tower under its own gravity. The sediment is discharged outside the dredger through the mud chutes on both sides. Chain bucket dredgers are suitable for excavating rivers, reservoirs, and building foundations. Chain bucket ships have high efficiency, low failure rate, low operating costs, simple operation, easy disassembly and easy transfer.