14 Terms
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Cranes
A crane is a type of machinery used for lifting and moving heavy materials in construction, transportation (loading and unloading merchandise) and other fields. Most cranes are equipped with a hoist, wire ropes or chains, and sheaves, that can be used both to lift and lower materials and to move them around.
Industry: Industrial machinery
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Cranes
drive girder
Industrial machinery; Cranes
The girder on which the bridge drive machinery is mounted.
primary upper limit device
Industrial machinery; Cranes
The first device that, when actuated, limits hoisting motion in the upward direction.
pitch diameter
Industrial machinery; Cranes
The distance, measured through the center of a drum or sheave, from center to center of a rope passed about the periphery of the drum or sheave.
headroom
Industrial machinery; Cranes
The distance from the load point of the hook, at its upper most position, to the top of the hoist or crane.
wheelbase
Industrial machinery; Cranes
The distance from center .to center of the outermost wheels of the bridge or trolley, measured parallel to the rail.
length
Industrial machinery; Cranes
The distance between extreme end bearing points of the synthetic web tie down assembly including the fittings.
knee brace
Industrial machinery; Cranes
The diagonal structural member joining the building column and roof truss.
