The bucket wheel dredger is a large hydraulic operated combination dredger suitable for dredging inland waterways, waterways, and reservoirs. The dredging equipment on the entire ship is driven by hydraulic pressure and centrally controlled. The main vessel of this ship consists of three floating boxes, which are integrated when in use. The cab is detachable and can be lowered in height through bridges and other restricted areas. When a ship enters the water without connection, it can be dismantled and transported by car or train. This device can be equipped with devices such as throwing bolts and carts. The transmission device adopts lubricating oil lubrication, and the metal floating ring sealing device is independently positioned.