The Dredger Ship Adopts CCSB Standard Sturdy Steel Structure To Wear
1. Why Choose Leader Dredger Hydraulic Dredger Ship?
Leader Dredger Co., who integrates design & research, production, export and after-sale service, is a professional high quality Chinese manufacturer for cutter suction dredgers with many branch offices in Asia, Mid-East, Africa countries etc, one of the largest annual sale for cutter suction dredgers.
Leader dredger, on the march to a world famous brand name, is your ideal choice for dredging machinery!
About 18 Inch Dredger Ship Cutter Head
For one cutter head, there are 5 blade,6 or 7 teeth equipped on one blade. There is material Cr. for easy-wearing proof. Cutter head is driven by hydraulic motor; cutter bearing has lubrication seal-in units.
The cutter motor is hydraulic driven low speed and high torque heavy duty design. The cutter motor is mounted on the cutter front piece on the ladder end. A special cover is provided to protect the motor from damage due to sand, rocks and debris. The cover can be removed from easy inspection and maintenance.
About 18 Inch Dredger Ship Hydraulic winch
To support the ladder, a hoisting winch is provided at the front of the main pontoon, which is installed on a solid foundation. The winch is hydraulically driven by the reduction gear box in the winch structure. The winch has a disc brake, which is automatically activated when the pressure drops. The winch is operated from the control room
and has a fixed speed.
For the lateral pull of the ladder, there are two winches at the front of the main pontoon, which are installed on a solid foundation. The winch is hydraulically driven by the reduction gear box in the winch structure. The winch has a disc brake, which is automatically activated when the pressure drops. The winch is operated from the control
room with variable speed.
About 18 Inch Dredger Ship Hydraulic system
The hydraulic system is the most important part of the river sand dredger and bucket wheel dredger. The hydraulic system is very demanding and strict; it is the main artery of the entire sand dredger. The side traction winch of the dredger, the lifting winch and the cutting head are driven by hydraulic motors.
We use hydraulic pressure to drive the entire dredger, including winches, cutting machines, hydraulic cylinders, etc. The valve is REXROTH, and the hydraulic control system is SIEMENS PLC.
About 18 Inch Dredger Ship Dredge Pump
The dredge pump is high efficiency made from wear resistant casting impeller and liners fitted on heavy duty shaft and high quality roller bearings.
The impeller is fitted on the shaft by trapezoid thread directly machine on the shaft end. The shaft sealing is a water cooled sealing that can be replaced after wear life. The impeller is a special type of double curved vanes high efficiency and wear life optimized tested in laboratory and onboard of dredgers. The impeller is fixed on the shaft
by trapezoid thread machined directly in the impeller hub.
The pump casing has a shape of a volute designed of a high efficiency and wear life optimized tested in laboratory and onboard of dredgers. The pump liners are made of high wear resistant materials and thick wall thickness to maximize the wear life. The casting covers are made from fabricated steel stiffened where necessary and
machining to fit the case and the liners.
2. Dredger Ship Production Process
Material cutting.
The thickness of the steel plate is 6 mm, which is very strong and strong enough for this type of winch dredger. We carefully cut the material of the dredger with an automatic plasma cutter.
welding.
All our workers are senior welders with welding skills to ensure that the welding is beautiful and there is no gap.
painting.
After the dredger pontoon is completed, we will paint the small winch dredger with anti-rust paint and topcoat. The paint color of the dredger can be specified according to customer requirements.
The winch dredger is assembled for sale.
We assemble and connect sand pumps, water pumps, pump engines, winches, hand frames, sand suction rubber hoses and fuel tanks.
The dredger undergoes sales testing before delivery. We started the engine and checked the working condition of the pump and winch. After ensuring that all the dredgers for sale were in the design state, we delivered the dredgers for sale.
3 . About 18 Inch Dredger Ship Application
1. The sand dredger for sale is used for cleaning river silt, sand production and mining projuct.
2. Suitable for heavy duty opetations in tripical climates and in sheltered waters.
3. Applied to dredging rivers, lakes and ponds, reclaiming land, cleaning ports and pumping sand.
4. Mainly service for the master dredger and transporter for delivering sand to land.
4. Dredger Ship Feature
1. One-man operation.
2. New highly effective cutter drive system
3. Reliable hydraulic system.
4. Fresh water cooling system
5. Completely assembled and fully tested before delivery.
6. Very simple and fast assembly with experienced engineers.
7. Standard design, allowing short delivery times.
8. Standard spare parts available from stock.
9. Designed as standard to qualify for Coastal Waters Certificate.
10. Optional equipment available.
5. Leader Dredger LD3700 Technical Specifications
A . Dredging Features
| Standard dredging depth(m) Maximum mixture | 12m |
| capacity(m/h) | 3700m³/h |
| Solid capacity(approx) | 740m³/h |
| Dredging pump mode | 500/450mm |
B . Principal characteristics
| Overall length(m) | 35m |
| Breadth(m) | 7m |
| Draught(m) | 1.3m |
| Discharge distance(m) | 1800m |
| Total dry weight approx(MT) | 130MT |
| Ladder length | 19m |
C . Dredge pump: Australia technology Pump
| By alloy cast iron material for better abrasion resistance, abrasive, hardness, more than68HRC. | Bigger working capacity, more efficiency, driven through gearbox. |
| Maximum mixture capacity(m/h) | 3700m³/h |
| Solid capacity(approx) | 740m³/h |
D . Engine
| Main diesel engine(Cummins) | CAT C32 746kw |
| Auxilary engine | CAT C9.3 218KW |
| Total fuel consumption | ≤154kg/hr |
| Extra emergency generator set | 24kw(32Hp) |
6. Hydraulic Cutter Suction Dredger Desgin
• Hydraulic pumps drive cutter, winches spud rams
• Main engine drives pump through gearbox
• pump inside engineroom
• Famous European-brand electric system and hydraulic system
• Engine room big and cool, and easy to maintain
• Dredge can be equipped with several options such as
• Design of high production long distance and reliability, easy control, simple maintenance
• Australian technology pump
Anchor booms/Spud carriages/Increasing The Dredging Depth/Self-Propell/Pump Booster station/GPS dredging System
7. Hydraulic System: German Brand Hydraulic Parts:
To drive: 1 cutter header, 1 ladder winch, 2 side winches,2 spud rams, 2 hydraulic pumps, and a lot of hydraulic valves The extra emergency pump can drive all hydraulic parts using the extra emergency generator set.
8.Leader Dredger Cutter Suction Dredger Customer
9. Cutter Suction Dredger Picture
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CCSB Standard 450mm Dredger Ship Driven Through Gearbox Images
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