Marine Hatch Cover Gantry Crane Designed to Remove and Replace Heavy Hatch Covers! Built to individual requirements MAIN BOX GIRDER: Supported at the ends by flanged wheel dollies, traveling on permanently mounted fixed rails on the boat deck. "DEAD MAN" TYPE CONTROLS: Return to neutral for safety purposes. Cover hooks are self engaging into cover attaching eyes. DIESEL OR ELECTRIC DRIVEN HYDRAULIC SYSTEMS: Utilized for hoisting, traveling and braking. Hoist cylinder has hydraulic counter balance valve to require "power down". MECHANICALLY BALANCED DRIVE: Drives on all four wheels to prevent yaw and assure traction. Hydraulic motor for drive system has planetary gear reducer with final chain drive to all four wheels. Hydraulic motion control valves prevent overspeeding and provide smooth deceleration. LOW HEIGHT: Permits handling hatch covers without having to swing self-unloader boom to the side of the ship.
Features TYPICAL SPECIFICATIONS HTC300 HTC600 Rated lifting capacity*: 15,000 lbs 60,000 lbs Unit weight (approx.): 15,000 lbs 42,000 lbs Standard power unit**: JD4239T liquid cooled 100 HP @ 2100rpm Travel speed 150 fpm 100 fpm Hoist speed 25 fpm 20 fpm Electrical system 12 volt DC 40 AMP alternator Lights Six 12 volt 60 watt DC flood lights * = Larger sizes available upon request ** = Optional 460 volt electric motor drive with spring motor, electric cord rewind DIMENSIONS ADAPTABLE TO INDIVIDUAL REQUIREMENTS (a) Wheel span (rail centers): 36 to 70 ft. (b) Hook spread, ctr. to cir.: 25 to 30 ft. (c) Center of crane to hook: 1/2 of Dim. B (d) Overall length: 11'1" (e) Wheel base: 8'0" (f) Wheel to center of unit: 1/2 of Dim. E (g) W. of wide frame & power unit (1/2): 15" (h) Overall height of unit (approx.): 7 to 22 ft. (i) Top beam height: 30" (j) Hook travel height: 4 to 16 ft. (k) Cover lifting height: As required Pcaking
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