Crane Components, Configurations & Terminology Flashcards

Which crane type has a single cab used for both driving and crane operation, large tires, and is meant for rough job sites rather than highways?

Answer: Rough terrain crane

Rough terrain cranes use one cab for travel and lifting and are designed for off-road site work.

Which crane combines highway travel capability with multi-axle all-wheel steering and off-road performance?

Answer: All-terrain crane

All-terrain cranes have highway-legal carriers with all-wheel drive and steer for site mobility.

A major advantage of a crawler crane over a wheeled mobile crane is that it:

Answer: Can often pick and carry loads and spreads weight over a larger track area

Crawler tracks give low ground bearing pressure and allow pick-and-carry within chart limits.

On a tower crane, the counter-jib's primary purpose is to:

Answer: Carry the counterweight that balances the working jib

The counter-jib extends opposite the working jib and holds the counterweight ballast.

A luffing jib differs from a fixed jib in that it:

Answer: Can change its angle during operation

A luffing jib can be raised and lowered independently of the main boom.

On an overhead bridge crane, the component that travels across the bridge girders and carries the hoist is the:

Answer: Trolley

The trolley moves across the bridge and carries the hoist, while end trucks run along the runway.

An articulating (knuckle) boom crane is identified by:

Answer: Hinged boom sections that fold, similar to a human finger

Knuckle booms use hinged sections moved by hydraulic cylinders and fold compactly behind the cab.