Supplemental hoisting unit, which usually provides a lighter capacity and higher speed than the main hoist provides
Part of a crane that carries the trolley or trolleys. The overhead bridge consists of girders, trucks, end ties, foot walks, and a drive mechanism
Crane movement in a direction parallel to the crane runway
Distance from any part of the crane to a point of the nearest obstruction
Electrical conductors located along the bridge structure of a crane to provide power to the trolley
Electrical conductors located along the crane runway to provide power to the crane
Machine for lifting and lowering a load and moving it horizontally, with the hoisting mechanism an integral part of the machine. Whether fixed or mobile, cranes are driven either manually or by power
Cylindrical member around which the joist's wire ropes are wound for raising or lowering the load
Crane similar to an overhead crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or other runway
As part of a crane, the hoist is an apparatus that exert a force for lifting or lowering large, heavy items
Load bearing chain in a hoist
Motion of a crane that raises and lowers a load
Total superimposed weight on the load block or hook
Assembly of hook or shackle, swivel, bearing, sheaves, pins, and frame suspended by the hoisting rope
Hoist mechanism provided for lifting the maximum rated load
Crane with a movable bridge carrying a movable or fixed hoisting mechanism and traveling on an overhead fixed runway structure
Maximum load for which a crane or individual hoist is designed and built by the manufacturer. Maximum rate load are required on the equipment's nameplate
Generally refers to the use of wire rope, unless otherwise specified
A Sheave that rotates as the load block is raised or lowered
Assembly of rails, beams, girders, brackets, and framework on which the crane or trolley travels
Horizontal distance center-to-center of runway rails
Device to limit travel of a trolley or crane bridge. This device normally is attached to a fixed structure and normally does not have energy absorbing ability
Unit that travels on the bridge rails and carries the hoisting mechanism
Trolley movement at right angles to the crane runway
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