CSD-350 Cutter Suction Dredger

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

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Supply Capability:: 10 unit/month

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General Introduction

u This cutter suction dredger is designed to operate in sheltered inshore waters and under tropical climate conditions. Build under enterprise standard with reference to ZC standard.

u She is of all welded steel construction ,bottom plate 8 mm thickness and shell plating 6 mm thickness, frame distance 500 mm, with 2 fixed spuds on the aft ,ladder support A frame in the front and 3 hydraulic operated winches ,2 double bollards(fwd and aft) and 1 single bollard in the center on each side.

u The whole dredger is dismountable in road transportable sections.

u The engines and dredge pump are located in the center pontoon, the 2 side pontoons serve as fuel bunkers, ballast tanks and store.

u Engine room and pump section are accessible by watertight hatches

u Cutter shaft runs on roller type bearings in an enclosed shaft housing flooded with lubrication oil a lock oil tank to ensure a positive pressure inside the bearing housing is located on top of the wheelhouse.

u The spacious control cabin is ergonomically designed fitted on a raised platform with all around non obstructed view ,2 operators consoles containing engine instrumentation and controls for winches, dredge pump, suction and discharge pressure gauges, navigation light controls, airconditioned and well insulated .

u Below the control cabin is a changing room located with table, chairs and washbasin

u The underwater section of the dredger is protected with a marine coating system and cathodic protection for use in a saltwater environment。

TECHNICAL SPECIFICATION CSD250
No.	Item	Description	Remark
1.	General Principle
	(1). Overall Length	26m
	(2). Side Pontoon Size	17m
	(3). Main Pontoon Size	11.0m
	(4). Breadth	5.2m
	(5). Moulded Depth	1.6m
	(6). Mean Draft	1.0m
	(7). Dredging Depth	10m
	(8). Pumping Distance	1000m
	(9). Pump Flow Capacity	1400m³/h
	(10).Suction Pipe Dia	350mm	Out Diameter
	(11) Discharge Pipe Dia	350mm	Out Diameter

2.	Main Pontoon
	(1). Dimension	11m2.2m1.6m
	(2). Bottom Plate Thick	10mm	CCSB marine plate
	(3). Side Wall Thick	8mm	CCSB marine plate
	(4). Front and Rear	14mm	CCSB marine plate

3.	Side Pontoon
	(1). Dimension	17m1.5m1.6m
	(2). Bottom Plate Thick	8mm
	(3). Side Wall Thick	6mm
	(4). Front and Rear Thick	6mm

4.	Main Engine		Drive dredger pump only
	(1). Make	weichai
	(2). Model	8170	Marine Engine. Cummins is optional
	(3). Power / rpm	601Kw @ 1500 rmp
	(4). Fuel Consumption	85L/h
	(5). Cooling Style	Water Cooling

6.	Axle Generator		Driven by auxiliary engine
	Make	STANFORD
	Power / rpm	24Kw

7.	Harbor Generator		Drive hydraulic pump & axle generator
	Make	WEICHAI +STANFORD
	Power / rpm	24Kw
	Fuel Consumption	4L/h
	Cooling Style	Air Cooling
	Output Voltage	220V/ 380V

8.	Dredge Pump
	Make	SHIJIAZHUANG
	Model	250G-G
	Suction Pipe Diameter	300mm
	Discharge Pipe Diameter	250mm
	Head	65m
	Rpm	650rpm
	Water Flow Capacity	1200m³/h

9.	Gearbox
	Model	L620
	Ratio	2 : 1

10.	Cutter
	Style	Hydraulic Motor+ Planetary Gearbox
	Cutter Power	60kw
	Crown Diameter	900mm
	Cutter Out Diameter	1000mm
	Blades	5pcs	High manganese alloy
	Cutter Teeth	33pcs	High manganese alloy
	Rpm	0-10-30rpm

11.	Ladder Winch		Hydraulic Drive
	Winch Motor Brand	XINHONG	Sino-Italy Joint Venture
	First Layer Pull	4 Ton
	Wire Rope Dia	18mm
	Wire Rope Capacity	120m
	Wire Speed	0-20m/min

12.	Swing Winch		Hydraulic Drive
	Winch Motor Brand	XINHONG	Sino-Italy Joint Venture
	First Layer Pull	4 Ton
	Wire Rope Dia	18mm
	Wire Rope Capacity	120m
	Wire Speed	0-20m/min
	Quantity	2 sets

14	Spud
	Length	13m
	Diameter	325mm
	Weight	2200Kg	Each

15	Spud Cylinder
	Cylinder Stroke	2.0m
	Cylinder Dia	140mm
	Working Pressure	16Mpa
	Travel Speed	0.2m/s

17.	Anchor
	(1). Type	HHP Anchor
	(2). Weight	300Kg

18.	Operation Cabin
	(1). Operation Board	Control all dredger movement commands and monitor equipments running condition. PLC system from SIMENS
	(2). Adjustable Chair	For dredger master. Leather.
	(3). A/ C	One set
	(4). Lounge	First floor cabin has space for two persons rest.

19.	Hydraulic System
	A. System Introduction	Hydraulic system is designed to supply power for winches, cutter, spud cylinder. Hydraulic pump separately is driven by engine free end.
	B. Hydraulic Motor	From Sino-Italy Joint Venture, YINING. Excellent working performance and durable usage life.
	C. Hydraulic Pump	NANJING

20.	Painting Principle
	Introduction	Do sand blasting before welding. Use good quality marine paint with greater thickness. Paint system is 3 or 4 layers with minimum thickness of 400 micron on the below water line area

19.	Electrical System
	Introduction	All electrical components are from famous brand as Omron and CHINT. Equip overload protection box to control safety. Use high quality electrical marine type cables (smoke and halogen free).
20.	Navigation Tool
	(1). Elec-mag Compass	Equipped
	(2). VHF-Radiotelephone	Equipped

Q:Who knows what's the name of the biggest dredger in China?: Shanghai Waterway Bureau trailingsuction ship strength slightly, most of its name to "Xinhai" at the beginning, the Phoenix as the representative of the Xinhai tank volume is about 16000m the ship should be fand the largest and most advanced tshd. To say that the largest is the new sea lion, but the head is large, inefficient, difficult to enter the stream.

Q:Does dredging dredger need relevant qualification?: I can do it for you or not! No, oh, no!

Q:What are the crew members on the dredge?: The dredge work generally is not very tired, after all, the mechanization of things, the need for artificial little ~ ~ for one is general and maintenance of turbine operation, as well as the ship fuel supply etc..

Q:Classification of trailing suction dredgers for trailing suction dredger: Suction dredger is flexible, high efficiency, strong wind waves, suitable for coastal ports, the wide river and ship anchorage operation in large waves and without the cover of coastal and estuarine areas, should choose the self-propelled trailing suction dredger. Soil works suitable for loosening and less than clay hardness.

Q:What is the difference between a cutter suction dredger and a trailing suction dredger?: The work of a cutter suction dredger works through an agitator in the head of a straw and straw.

Q:Who has the construction plan of dredger dredger after dredger dredging and dredging with dredger barge?: Would dig into the mud barge, barge by suction dredger, using force pump suction dredger through pipelines on shore

Q:What is the working principle of a cutter suction dredger?: The working principle of cutter suction dredger: to locate the pile as the center, swing to dredge, forward, like walk, another piece of steel columns alternately changing piles, cutter dredging process fanned forward. The operation of the cutter suction dredger can be completed continuously, such as dredging, transporting mud and unloading mud. It is a kind of dredger with high efficiency and low cost.

Q:3800m3 cutter suction dredger: 3800m3 bucket wheel dredger is at the end of the last century according to the Ministry of transportation "based on domestic design and construction, the introduction of equipment key technology policy, the Yangtze River Waterway Bureau presided over the development of construction, Shanghai 708 Institute of design, Wuchang shipyard built China's first inland new dredger. The ship's key power equipment, dredging equipment, hydraulic systems were provided by German SKL company, United States Ellicotte (Aili, Kurt) company, the United States Dennison hydraulic company. This ship has been officially delivered to the Yichang Waterway Engineering Bureau of the Yangtze River. The name of vessel is No. 1.Bucket wheel cutting device in the river near the mouth of the soil suction, and by rotating the bucket wheel by cutting soil and water into high concentration mud, directly transported to the suction suction head of the top tube, rely on the suction centrifugal pump, the suction pipe has certain vacuum. The mud suction head, suction tube at the top end of the suction pipe, through the mud pump pressure after the mud through the mud discharging pipe into the mud barge or transported to the mud field. Through positioning piles, positioning piles, landing gear and traversing winch, the positioning of dredger, longitudinal forward movement and lateral swing of ship are achieved, and the purpose of continuous excavation of river bed soil is achieved.

Q:The working principle of a trailing suction dredger: Suction ships to show all sizes of the mud tank capacity, general cargo capacity is 500 ~ 1000m3. minimum drag suction dredger construction at a depth of about 3 conditions. The maximum drag suction dredger digging depth can reach 3 to 35. The suction ship belongs to the ships in waves, considerable sea dredging sailing, and mud.

Q:Advantages and disadvantages of trailing suction dredger for trailing suction dredger: In dredging, sediment laden with large amounts of water is transported to the dumping area, thereby affecting production. The suction boat can be used in infrastructure dredging and maintenance dredging, but not in narrow water areas

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