Backhoe Dredger

Aiming at the pain points of traditional dredgers such as "low efficiency in hard soil excavation, easy stranding in shallow water, and poor operation accuracy", .HAIDING SHIPYARD Backhoe Dredger realizes "full geological high-efficiency dredging + shallow water coverage + high-precision operation" through CCSB marine steel plate reinforced structure, hydraulic backhoe precise control, and multi-specification bucket adaptation. The daily dredging volume reaches 6000-9000m³, 30% more efficient than traditional dredgers, providing a "durable, efficient, precise" professional solution for dredging projects.

Core Advantages

Full Geological High-Efficiency Excavation, Adaptable to Multi-Scenarios

・High-Strength Backhoe System: .HAIDING SHIPYARD Backhoe Dredger equipped with a hydraulic-driven backhoe arm (made of high-strength alloy steel with quenching and tempering treatment) and multi-specification wear-resistant buckets (4-8m³, Brinell hardness ≥350HB), with a maximum digging force of 320-450kN. It can efficiently clean hard soil layers, sand layers, gravel layers and sludge layers, with an excavation cycle of only 20-30 seconds/bucket. The hard soil dredging efficiency is 40% higher than traditional equipment;

・Multi-Functional Accessory Adaptation: .HAIDING SHIPYARD Backhoe Dredger supports rapid switching of accessories such as hydraulic breakers and grabs (connected via standardized interfaces, switching time ≤2 hours). The hydraulic breaker can crack hard obstacles such as reefs and concrete blocks, and the grab is suitable for cleaning large debris, realizing integrated "dredging + breaking + obstacle clearance" operations without additional supporting equipment.

Shallow Water Coverage, Strong Operation Stability

・Shallow Draft Optimization Design: The unloaded draft is only 0.8-1.2m, and the minimum working water depth is 0.8m, which can enter areas that are difficult for traditional equipment to reach, such as inland river tributaries and shoals, avoiding stranding risks. The hull adopts a wide-body design (molded width 10-16m), combined with retractable side floating bodies, and the rolling angle during operation is ≤3°, ensuring excavation stability in shallow water;

・High-Precision Control System:.HAIDING SHIPYARD Backhoe Dredger equipped with GPS+Beidou dual positioning (accuracy ≤10m) and electro-hydraulic proportional control system, the digging depth error is ≤0.2m, and the dredging flatness error is ≤±0.3m, which can meet high-standard dredging needs such as port berths and precision waterways. The cab is equipped with a 360° panoramic monitoring and wireless remote control terminal, effectively coping with complex operating environments.

Reinforced Structure Design, Outstanding Durability

・High-Strength Material Application: The main structure of the HAIDING SHIPYARD Backhoe Dredger is made of CCSB marine steel plate (thickness 12-18mm, yield strength ≥235MPa), and key parts (excavator arm, stick) are made of high-strength alloy steel, with a hardness of ≥220HB after quenching and tempering, showing excellent impact and wear resistance. The deck is made of CCSB wear-resistant modified steel plate with a thickness of ≥16mm, which can withstand long-term rolling of heavy equipment;

・Professional Anti-Corrosion Treatment: The hull surface adopts fluorocarbon heavy anti-corrosion coating + cathodic protection (dry film thickness ≥300μm), and the anti-corrosion life of underwater parts is ≥10 years, which can adapt to fresh water, seawater, saline-alkali shoals and other multi-medium environments. The inner side of the bucket is equipped with wear-resistant alloy liner, and the service life is twice that of ordinary buckets, reducing the frequency of vulnerable parts replacement.

Convenient Operation & Maintenance Design, Controllable Cost

・Modular Structure Layout: Core components (hydraulic pump, excavator arm, mud pump) adopt modular design, which can be disassembled and replaced as a whole in case of failure. The land maintenance time is ≤6 hours, and the water emergency maintenance is ≤12 hours. Key hydraulic components are selected from internationally renowned brands with high reliability and an average annual failure rate of ≤3%;

・Low-Consumption & High-Efficiency Configuration: HAIDING SHIPYARD Backhoe Dredger equipped with 2 sets of 600-800kW energy-saving and environmental protection diesel generators, the fuel consumption under economic conditions is 15% lower than traditional equipment. The mud pump adopts high-efficiency and wear-resistant design with a flow rate of 120-180m³/h, which can directly transfer mud through pipelines or conveyor belts, reducing losses in intermediate links. The average annual operation and maintenance cost is 30% lower than traditional dredgers.

Detailed Technical Parameters

Core Application Scenarios

Inland Waterway Dredging

・Shallow Waterway Widening: In inland rivers of Yangtze River tributaries and Pearl River Delta (water depth 1-5m), 4-6m³ buckets are used to clean sludge and hard soil deposition at the bottom of waterways. After dredging, the waterway depth is increased to 3-6m, meeting the navigation needs of 1000-ton cargo ships, and the excavation efficiency is 30% higher than traditional equipment;

・Inland Wharf Berth Dredging: For inland wharf berths (water depth 2-8m), high-precision control mode is used to clean berth silting, ensuring the berth water depth meets the ship docking requirements. The dredging flatness error is ≤0.3m, avoiding ship stranding risks and ensuring port operation efficiency.

Port & Coastal Shoal Development

・Port Berth Maintenance: In coastal port berths (water depth 5-10m), hydraulic breaker accessories are equipped to crack reefs and concrete blocks, and 8m³ large-capacity buckets are used to clean silting. The daily dredging volume reaches 9000m³, quickly restoring the berth water depth and ensuring the normal docking of large ships;

・Shoal Reclamation: In coastal shoals of Bohai Bay and East China Sea (water depth 0.8-3m), the shallow draft advantage is used to enter the shoal area, excavate shoal sediment and transport it to the reclamation area through mud pipelines. The daily reclamation area can reach 4000-6000㎡, 25% more efficient than traditional dredger-fill ships.

Emergency Rescue

・River Blockage & Flood Drainage: In inland river blockages caused by heavy rain (water depth 1-3m, containing branches and garbage), HAIDING SHIPYARD uses Backhoe Dredger grab accessories to clean blockages, and mud pumps are used to drain stagnant water. The daily flood drainage volume reaches 50000m³, quickly restoring the river flood discharge capacity and reducing flood disaster losses;

・Post-Disaster Dredging & Restoration: After typhoons and storm surges, in coastal ports and wharves (water depth 2-6m), the integrated "excavation + breaking" mode is used to clean sediment silting and pollutants. Normal port operations can be restored in 3-5 days, reducing post-disaster economic losses.

Service Guarantee

Customization Services

・Parameter & Function Customization: Adjust hull size (up to 80m), bucket capacity (up to 10m³), and dredging depth (up to 15m) according to operation scenarios. For polar cold areas, add hull insulation layer and hydraulic system heating device; for high-temperature and high-salt environments, upgrade marine-grade heavy anti-corrosion coating and wear-resistant components;

・Value-Added Services: Assist in providing CCSB marine steel plate material certification, ship classification certification (CCS/ABS/DNV) and dredging operation permits; provide equipment operation and maintenance training (including bucket replacement, hydraulic system maintenance, anti-corrosion coating maintenance); connect with dredging engineering teams to provide integrated "equipment + operation plan + operation and maintenance" services, ensuring efficient project advancement.