In overhead crane design, which statement is true?

In overhead crane design, which statement is true?

• A. Bridge, trolley and hoist are the three basic components.
• B. Bridge, hoist and counterweight are the three basic components.
• C. Bridge, trolley and gantry are the three basic components.
• D. Trolley, hoist and jib are the three basic components.

Answer: (A)

The main concept is the three core subsystems that enable an overhead crane to lift and move loads. In overhead crane design, the load-handling system is built from the bridge, the trolley, and the hoist. The bridge is the horizontal span that travels along the runways, providing the main support and the path for movement across the workspace. The trolley runs along the bridge and carries the hoist, allowing positioning of the lifting mechanism along the bridge’s length. The hoist is the lifting device that actually raises and lowers the load. Together, these three form the essential, functional backbone of an overhead crane. Other terms describe different configurations or parts that aren’t the fundamental trio: a gantry crane is a distinct type where the bridge is supported by legs and operates on ground rails, and a jib refers to a different crane design where the lifting arm extends from a vertical pivot. A counterweight is a balancing element used with some hoists, but it isn’t one of the three basic components that define the overhead crane’s structure and operation.

The main concept is the three core subsystems that enable an overhead crane to lift and move loads. In overhead crane design, the load-handling system is built from the bridge, the trolley, and the hoist.

The bridge is the horizontal span that travels along the runways, providing the main support and the path for movement across the workspace. The trolley runs along the bridge and carries the hoist, allowing positioning of the lifting mechanism along the bridge’s length. The hoist is the lifting device that actually raises and lowers the load. Together, these three form the essential, functional backbone of an overhead crane.

Other terms describe different configurations or parts that aren’t the fundamental trio: a gantry crane is a distinct type where the bridge is supported by legs and operates on ground rails, and a jib refers to a different crane design where the lifting arm extends from a vertical pivot. A counterweight is a balancing element used with some hoists, but it isn’t one of the three basic components that define the overhead crane’s structure and operation.