In crane assembly, the gantry is fastened to which part of the crane?

In crane assembly, the gantry is fastened to which part of the crane?

• A. Front end of the crane-body frame
• B. Back end of the crane-body frame
• C. Trolley assembly
• D. Base plate

Answer: (B)

The gantry must be secured to the crane-body frame to create a single, rigid path for all lifting and traveling loads. Attaching the gantry to the back end of the crane-body frame provides a fixed anchor point that resists the tipping moment and lateral forces generated when the hoist lifts a load and moves it toward the front of the crane. This rear connection helps keep the front overhang stable and ensures the reactions are transferred into the main frame and then into the foundation through the base components. The base plate is what ultimately anchors the whole crane to the floor, not where the gantry attaches. The trolley assembly is the moving part that travels along the gantry and houses the hoist; it isn’t the fastening point for the gantry itself.

The gantry must be secured to the crane-body frame to create a single, rigid path for all lifting and traveling loads. Attaching the gantry to the back end of the crane-body frame provides a fixed anchor point that resists the tipping moment and lateral forces generated when the hoist lifts a load and moves it toward the front of the crane. This rear connection helps keep the front overhang stable and ensures the reactions are transferred into the main frame and then into the foundation through the base components. The base plate is what ultimately anchors the whole crane to the floor, not where the gantry attaches. The trolley assembly is the moving part that travels along the gantry and houses the hoist; it isn’t the fastening point for the gantry itself.