Which are the three basic components of an overhead crane?

Which are the three basic components of an overhead crane?

• A. Bridge, trolley and hoist
• B. Mast, jib and counterweight
• C. Boom, pinion and rotor
• D. Girder, cable and pulley

Answer: (A)

The lifting and positioning power of an overhead crane comes from three essential parts working together. The bridge is the horizontal frame that spans the area and runs along rails, providing the supporting platform that enables movement across the workspace. The trolley sits on the bridge and moves along its length, carrying the hoist to the exact spot over the load. The hoist is the lifting mechanism attached to the trolley that actually raises and lowers the load, using a drum with rope or chain, motor, and hook. This combination—bridge for reach, trolley for carriage, and hoist for lifting—defines the basic structure and function of an overhead crane. Other terms refer to different crane types or components, but they don’t represent the three core subsystems that make an overhead crane operate.

The lifting and positioning power of an overhead crane comes from three essential parts working together. The bridge is the horizontal frame that spans the area and runs along rails, providing the supporting platform that enables movement across the workspace. The trolley sits on the bridge and moves along its length, carrying the hoist to the exact spot over the load. The hoist is the lifting mechanism attached to the trolley that actually raises and lowers the load, using a drum with rope or chain, motor, and hook. This combination—bridge for reach, trolley for carriage, and hoist for lifting—defines the basic structure and function of an overhead crane. Other terms refer to different crane types or components, but they don’t represent the three core subsystems that make an overhead crane operate.