EHWD Hose Reel

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EHWD Hose Reel Engineering model-Isometric View
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EHWD Hose Reel Basic Parameters Lower, hold, and
raise 9,500 ft (3,000 m) of 3.75 (95 mm) OD
hot-water hose Operate at 12,000 ft (3,660 m)
above sea level Operate in temperatures -40F to
90F (-40C to 33C) Storage in temperatures -100F
to 100F (-74C to 38C) Knock-down for shipment on
LC130 aircraft and reassemble at South
Pole Continuously variable drum rotation speed
from 0 to 1.5 rpm Computer interface and
control Pull with 10,000 lb (44 kN) empty drum
and 5,000 lb (22 kN) full drum Load capacity
(weight of hose water) of 50,000 lb (222
kN) Sled with ski-loading lt5 psi (34kPa) for
towing over snow at South Pole Fail-safe (power
interrupt) braking system Level wind system to
guide hose for uniform winding and
unwinding Enclosure for a thermal break
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TIRE
BRAKE DISC
DRUM
LINER
CHAIN GUARD
PILLOW BLOCK
SHAFT
END FRAME
REDUCER
MOTOR
SLED
ENCODER
PERSON
LEVEL WIND
SKI
EHWD Hose Reel Side View
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EHWD Hose Reel As viewed from below
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EHWD Hose Reel
View Showing Hose Winch Drive with Guard Removed
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GEARBOX SPECIFICATIONS Vendor Engineered Gear
Systems (phone) 414-355-8810, (fax)
414-355-8835 Model RES 3000 M4C-256-N28-H-S
(Note extended output shaft per print) Ratio
2561 Input 25 hp, NEMA 284TC, 1750 rpm
motor Efficiency 89 Output 6.836
rpm Maximum rated continuous output torque
28,760 ft-lb (39 kN-m) Maximum rated peak output
torque 33,190 ft-lb (45 kN-m) Calculated
output torque with 25 hp input 17,090 ft-lb
(23 kN-m) Bearing life 10,000 hrs L-10 bearing
life Service factor 1.498 Cost 6050.00
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EHWD Hose Reel
Sectioned View of Hose Winch Drive
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CHAIN AND SPROCKETS Vendor Dodge Gear
Systems Large Sprocket 60 tooth, 200-2 (2-1/2
pitch, double row) Small Sprocket 13 tooth,
200-2 (2-1/2 pitch, double row) Chain 200-2
(2-1/2 pitch) Average Tensile Strength
190,000 lb (845 kN) Ratio 4.6151
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FAILSAFE DISC BRAKE Vendor Hilliard
Corporation Model ESTOP ST2-A-SE Description
Spring-applied / electric-release failsafe
caliper brake assembly with 460v/480v
control Calculated Stopping Time (based on
effective 60 diameter disc) 2
seconds Clamping Force 15,700 lb (70 kN)
Cost 15,324.00 Disc Supplied by PSL,
72 diameter
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MOTOR
REDUCER
COUPLING
RECIRCULATING BEARING BLOCK
GUIDE RAIL
LEAD SCREW
HOSE GUIDE ROLLERS
EHWD Hose Reel
View Showing Level Wind Mechanism
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LEVEL WIND MAIN COMPONENTS REDUCER Vendor Dodge
Gear Systems Model APG Gear Reducer-Size
3 Ratio 1301 Input 2 hp, NEMA 140TC, 3600
rpm motor Output 27.67 rpm BALL SCREW AND
NUT Vendor Rockford Ball Screw Info 2.25
(57.2 mm) Ball circle dia x .5 (12.7 mm)
pitch Length 19-8 (6 m) Overall LINEAR GUIDE
RAILS AND BEARINGS Vendor THK America Load
Rating 19,800 lb (88 kN) Length 9-10 (3 m)
Each
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EHWD Hose Reel
View Showing Typical Flange Connection
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Lifting Center Ski at PSL
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Aligning End Frame and Skis at PSL
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Skis Being Welded at PSL
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End Frame Mounts Being Welded at PSL
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Frame and Skis assembly
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Drum Takes Shape at Comet Manufacturing
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Looking Through Drum as it is Being Assembled at
Comet
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Drum Being Assembled at Comet
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Receiving drum weldment
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End Flange Weldment After Completion at PSL
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Gear Reducer Mount Weldment at PSL
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Chain Guard Weldment at PSL
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Motor Guard Weldment at PSL
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EHWD Hose Reel Shipping Scheme
Strong-Back and Skis Ready For Shipment
12,500lb (56 kN)
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EHWD Hose Reel Shipping Scheme
End Flanges Ready For Shipment
3,600lb (16 kN)
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EHWD Hose Reel Shipping Scheme
End-Frames Ready For Shipment
11,200lb (50 kN)
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EHWD Hose Reel Shipping Scheme
Tools Miscellaneous Parts Ready for Shipment
1,300lb (6 kN)
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EHWD Hose Reel Shipping Scheme
Hose Winch Drum Ready For Shipment
21,300lb (95 kN)
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Pictures of EHWD progress can be found
in ftp//www.psl.wisc.edu/EHWD/EHWD-Pictures/