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tower craneclick to hear

Crane used on construction sites with a usually horizontal jib mounted on top of a tower.
tower crane counterjib operator’s cab tower mast counterweight crane runway hook hoisting block hoisting rope trolley pulley jib trolley jib tie counterjib ballast

counterjib click to hear

Metal lattice that supports the ballast.

operator’s cab click to hear

Cab at the top of the tower from which the operator manipulates the crane.

tower mast click to hear

Metal lattice of varying height that supports the jib.

counterweight click to hear

Blocks of concrete stacked at the base of the tower to stabilize the crane.

crane runway click to hear

Girders along and under which the trolley runs.

hook click to hear

Strong curved piece of metal for suspending the load.

hoisting block click to hear

System of pulleys that work with the trolley pulley to improve leverage to lift heavy loads.

hoisting rope click to hear

Durable cable of variable length for manipulating loads.

trolley pulley click to hear

System of several pulleys that together enhance leverage.

jib click to hear

Metal lattice that pivots on the tower and lifts and extends the hoisting system.

trolley click to hear

Vehicle running along and under the jib; the hoisting rope is suspended from it.

jib tie click to hear

Metal cable that distributes the tension.

counterjib ballast click to hear

Concrete mass attached to the counterjib to balance the weight of the jib and its load.