"SWINGING DRAGON™" SPECIFICATIONS |
| General |
Length - with Ladder - overall |
56'-6" |
17.2m |
| Width - Hull, operational |
15’-3” |
4.65m |
| Width - Shipping, overall |
10'-6" |
3.2m |
| Height - Overall (without spuds) |
11'-6-1/2" |
3.52m |
| Height - Overall (shipping) |
10'-0" |
3.05m |
| Dry Weight (estimated) |
51,000 lbs |
23.2 tonnes |
| Average Draft (estimated) |
2'-4" |
0.71m |
Fuel Capacity (3" Air Space)
(Two independent fuel tanks) |
250 U.S. Gallons |
950 litres |
| Hull |
Length |
49'-4" |
15.04m |
| Depth |
3'-6" |
1.07m |
| Width |
10'-0" |
4.65m |
| Built-in Ballast Tanks at four corners |
| Minimum Exterior Steel Plate Thickness |
3/16" |
4.8mm |
| Four (4) Lifting Lugs for Lifting Complete Dredge |
| Diesel Engine |
John Deere Model 8.1 L6081HF070 |
Turbocharged Diesel Engine -Radiator Cooled |
| Continuous Power Rating |
375 HP @ 2200 RPM |
280 kW |
| 12V DC Electrical System |
| Engine Control Panel with Digital Read-Outs in Operator's Cab |
| Sound dampening enclosure |
| Dredge Pump |
8" Diameter Suction x 8" Diameter Discharge - Hull Mounted |
| 19.5" Diameter 3-Vane Impeller - Thread Mounted on a Heavy-Duty Shaft |
| Wet End Parts (Impeller, Casing, Suction Cover & Replaceable Rear Liner) - 28% High Chrome Alloy Cast Iron (600 BHN Minimum) |
| Oil Lubricated Bearing Assembly with Lip Seal |
| Rope Packing on Pump End with Water Flush |
| Anti-Friction Roller Bearings for Thrust and Radial Loads |
| Typical Operating Point-3,000 GPM @ 150' (45.7m) of Head (water) @ 1132 RPM |
| Efficiency @ Typical Operating Point |
77% |
| Maximum Sphere Size |
3.625" |
92mm |
| Cutter Head |
Cutter Diameter |
31” |
787mm |
| Number of Blades |
6 |
| Cutting Blade Edges |
Replaceable Blades |
| Shaft Diameter |
2-1/2" |
64mm |
| Torque Rating |
31,500 lb/inch |
2,560N-m |
| Speed Range |
0-40 RPM |
| Cutter Horsepower |
40 |
30kW |
| Cutting Force |
4,000 lbs |
1,815kg |
| Cutting force per Linear Inch of Edge |
64 lbs |
11.43kg/cm |
| Dredge Range |
Minimum Digging Depth |
2'-4" |
0.61m |
| Maximum Digging Depth |
15' |
4.57m |
| Width of Cut @ 2'-4" Digging Depth |
22'-0" |
6.7m |
| Width of Cut @ 15' Digging Depth |
18'-3" |
5.5m |
| Ladder Swing Cylinder |
Nominal Size |
6" Bore x 18" Stroke |
152mm x 457mm |
| Rod Diameter |
2-1/2" |
64mm |
| Style |
Connecting Rod End(s) |
| Burst Pressure |
7,500 PSI |
51.7MPa |
| Operating Pressure |
2,500 PSI |
17.2MPa |
| Ladder Hoist Cylinder |
Nominal Size |
6" Bore x 30" Stroke |
152mm x 762mm |
| Rod diameter |
2-1/2" |
64mm |
| Style |
Connecting Rod End(s) |
| Burst Pressure |
7,500 PSI |
51.7MPa |
| Operating Pressure |
2,500 PSI |
17.2MPa |
| Kicker Spud Cylinder |
Nominal Size |
6" Bore x 10" Stroke |
152mm x 254mm |
| Rod diameter |
2-1/2" |
64mm |
| Style |
Connecting Rod End(s) |
| Burst Pressure |
7,500 PSI |
51.7MPa |
| Operating Pressure |
2,500 PSI |
17.2MPa |
| Spud Hoist Winches |
Type |
High Performance, High Efficiency, Planetary Hydraulic Winch |
| Line Pull |
2,200 lbs. |
998 kg |
| Line Speed (Up and Down) |
83 FPM |
25.3 MPM |
| Maximum Operating Pressure |
2,500 PSI |
17.2MPa |
| Wire Rope Diameter and Type |
1/2" - 6x19 Galvanized Wire Rope |
12.7mm –
152 x 483mm |
| Hydraulic Systems |
Pump Drive |
Double Pump - Engine Direct Drive |
| Circuits |
Dredge Pump (Closed Loop)
5,000 PSI (34.5MPa) Max continuous rating
5,500 PSI (38MPa) relief pressure setting |
Cutter Head & Auxiliary
2,500 PSI (17.2MPa) continuous rating
2,800 PSI
(19.3MPa)
relief pressure setting |
| Circuit Type(s) |
Dredge Pump - Closed Loop Hydro-Transmission
Auxiliary Controls - 8 bank proportional directional control valve(s) |
| |
Hydraulic Fluid |
Biodegradeable green A/W 68 |
| Operator's Cab |
Construction |
Steel galvannealed sheet wrapper with steel tubular frame, sound attenuating foam insulation on walls and ceiling, and tinted safety glass windows. Bi-fold door on both sides of cab. Windshield Wiper and Horn |
| Heating/Cooling |
Roof mounted air conditioner with hot water heater and fan |
| Engine Control Panel |
Diesel engine control panel with read-outs including speed control, tachometer, oil pressure, coolant temperature, high temperature and low oil pressure shut-down |
| Controls |
Individual "Finger Tip" Control Switches:
- Dredge Pump - On/Off and Speed
- Cutter Head - Fwd/Off/Rev and Speed
- Ladder Swing Cylinder - Starboard/Off/Port and Speed
- Ladder Hoist Cylinder - Up/Off/Down
- Starboard Spud Hoist - Up/Off/Down
- Port Spud Hoist - Up/Off/Down
- Kicker Spud Hoist - Up/Off/Down
- Kicker Spud - Fwd/Off/Rev
- Service Water - Pump On/Off |
| Lighting |
Front and Rear work Lights
Interior Cabin Light |
| Instruments |
Gauges:
- Slurry Pressure & Vacuum Gauges (Dial Type)
- Hydraulic Pressure Gauge, Dredge Pump Circuit
- Hydraulic Pressure Gauge, Cutter Head Circuit
- Hydraulic Pressure Gauge, Auxiliary Circuit(s) |
| Options |
Windshield Wiper and Horn
Dredge Positioning System
Production Meter
Suction/Discharge Relief Valve |
| Safety Equipment |
Two fire extinguishers, two life vests, and life ring. |
| Coating System |
All surfaces contacting liquid in the waterway are sandblasted and given two coats of coal tar epoxy having a minimum film thickness of 12 mils (DFT). All other surfaces are primed and coated with two coats of urethane enamel having a combined minimum film thickness of 4 mils (DFT). The cab, diesel engine, hydraulic pump drive, hydraulic components, etc. have their original OEM coatings. |
These specifications are representative of a typical swinging ladder dredge design, but are subject to change at manufacturer's discretion when necessary to update the product, and to provide the best available technology that optimizes dredge performance, improves quality, and best satisfies our customers' needs. |
