Hydraulic-driven dredgers are mainly divided into types such as full-hydraulic cutter suction, grab suction, and grab types. Among them, the full-hydraulic cutter suction type is the most common. . It drives the cutter to rotate and cut the underwater sediment through a hydraulic motor. At the same time, a hydraulic-driven slurry pump continuously transports the slurry through pipelines to the designated area, achieving integrated operations of "excavation - transportation - discharge". Typical models include the SWQ700 suction dredger (with an excavation depth of 2-15 meters and a production capacity of 1600 cubic meters per hour), the HLC200 modular suction dredger (with an excavation depth of 8 meters and a discharge interval of 600 meters), and large and medium-sized vessels equipped with hydraulic hinged cutters with a torque of 24000 N.M.
Core advantage
Hydraulic transmission system: The cutter, mud pump, winch, trolley, positioning piles, etc. are all driven by hydraulic motors or cylinders. The power output is stable and highly resistant to shock, resulting in a longer equipment lifespan.
Assembly-type modular design: The hull is composed of multiple floating boxes, and the driver's cabin can be disassembled, facilitating transportation by road or rail to areas without connected waterways, and quick assembly for production.
Efficient cutter and mud pump combination: The hydraulic cutter has a torque of up to 24,000 - 28,000 N.M, combined with a large-flow high-chromium alloy mud pump (such as 1100 m³/h), resulting in high sand extraction concentration and large processing capacity.
Self-propelled trolley system: The rear hydraulic trolley enables the hull to move forward by itself to a certain cutter position without external force, enhancing the continuity and coverage of the operation. Multiple power configurations are available: Diesel engine power (suitable for remote areas) or electric drive (suitable for industrial and mining enterprises with stable power supply scenarios), meeting different operational requirements.
Application fields
Water Conservancy and Environmental Clean-Up Dredging
River, lake and reservoir dredging: Remove accumulated sediment to restore reservoir capacity and improve water quality. Suitable for large water bodies such as the Yangtze River and Taihu Lake, as well as small and medium-sized reservoirs.
Urban blackwater body treatment: Combined with environmental protection augers and residual water treatment systems, achieve ecological dredging.
Agricultural water conservancy and flood control and drainage: Used for ditch excavation, lowland filling, and embankment construction.
Port and waterway engineering
Channel dredging and maintenance: Expansion, widening and daily maintenance of coastal and inland river channels to ensure navigable water depth.
Port and wharf construction: Port basin excavation, base channel dredging, providing conditions for port expansion.
Silt filling for land reclamation: Utilizing dredged silt for land filling, used for port expansion, artificial island construction, etc.
Ocean and resource development
Deep-sea sand extraction: Provide sand sources for coastal engineering.
Underwater mining: Used for the preliminary extraction and cleaning of underwater minerals such as placer gold, tin sand, iron ore sand, and salt mines.
Ocean engineering reef cleaning: In environmentally demanding areas, replace blasting technology with pure mechanical reef cleaning to protect marine ecology.
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