Dredgers mainly include three types: tracked, bucket dredgers, and suction dredgers. Tracked dredgers (such as HL350/400/550) use tracked walking mechanisms and are suitable for dredging large amounts of silt and sand. They feature strong climbing ability (slope ≤30°) and high stability, making them suitable for handling soft materials. Bucket dredgers (such as YHTC-30/50/80) use a crane to hoist buckets for dredging. They are suitable for shallow water channels (depth ≤15m) and port dredging. Their structure is similar to an excavator, offering flexible operation. Suction dredgers (such as ZCQ-30/40/60) use water pumps to suction sand, offering high operating efficiency (processing capacity 30-60 m³/h). They are suitable for large-scale dredging of fine sand and silt, with a conveying distance of 500-1000 meters.
The core structure of a dredger includes the hull (made of steel, its width affecting the dredging range), the power system (diesel/hydraulic drive, power 150-400HP), the adjustable dredging system (depth 5-20m), and the cab (integrated control). It is mainly used in waterway maintenance (dredging efficiency ≥200m³/day), soil and water conservation projects (sediment collection), and river and lake management (ecological restoration), effectively improving operational efficiency and reducing labor costs.