Clamshell Unloader Reeving Systems

Abstract

Recent increases in bulk material tonnage being transported throughout the world are requiring the planning of many new ship and barge unloading installations, as well as the renovation and updating of a number of existing facilities. For many years, the clamshell unloader has been the heart of the typical unloading facility, and in spite of new unloading techniques, it will continue to play a major role in years to come. Since today’s high performance, high capacity unloader can represent an investment of several million dollars, it is important that the operation of this machine be well understood and appreciated by all those involved. The purpose of this presentation is to discuss the various types of reeving systems that are available, their major advantages and limitations, and the features that are essential to any system to insure smooth and trouble free operation.