What type of crane is composed of a hoist trolley that travels along a horizontal bridge beam?

The type of crane that features a hoist trolley traveling along a horizontal bridge beam is the overhead crane. This design allows for efficient overhead lifting and moving of materials across a wide area. Overhead cranes are commonly used in warehouses, factories, and construction sites for their ability to lift heavy loads without the need for ground space, making them ideal for maneuvering in tight environments.

The unique structure of an overhead crane includes a bridge beam that spans the work area, with a hoist trolley that runs along its length. This trolley can move side to side, allowing for precise placement of loads wherever needed. This functionality is pivotal in operations requiring heavy lifting and exact positioning, benefiting workflows and enhancing productivity.

Other crane types do not share this specific structural configuration. Mobile cranes are designed for mobility and typically do not have a fixed bridge. Jib cranes have a horizontal arm (the jib) but do not employ a bridge beam system. Telescoping cranes utilize extendable arms for outreach but are also not structured like overhead cranes. Thus, it is the overhead crane that uniquely aligns with the described components and capabilities.