Marine Case Study
Marine Industry
INDUSTRY: Marine
APPLICATION: Ship Board Crane
PRODUCT: 9 Ton Underhung Double Girder Crane
SERVICES: Design, Installation, Quality and Load Testing
THE CHALLENGE
To design a ship board crane that will withstand and safely operate in a saltwater environment. The design requires critical fl eet angles, minimal hook-to-hook spacing, and accommodation for 2 degrees of ship list, along with other considerations.
THE SOLUTION
American Crane manufactured a crane featuring components such as: corrosion resistant fasteners, corrosion resistant coatings and stainless steel electrical enclosures (NEMA 4X). All gearing, including the drive motions and the gear rack, was designed with a minimum service factor of 2.0 for heavy duty service. In addition to the primary hoist-holding brake, secondary hoist-holding brakes were employed to operate directly on the drum. Rope reeving was designed with a minimum 6:1 safety factor in lieu of the standard 5:1 found on industrial applications.
THE RESULT
American Crane & Equipment Corp.
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