Overhead Crane Practice Test

Which component is most affected by side loading in an overhead crane?

1. The trolley rails

2. The drum lagging

3. The bridge girder

4. The wire rope

The correct answer is: The wire rope

Side loading in an overhead crane refers to lateral forces that can occur when the load is not perfectly aligned with the crane's lift. This misalignment can lead to excessive stress on various components of the crane. The wire rope is particularly susceptible to side loading because, when lateral forces are applied, the rope can experience bending and twisting, which can diminish its strength and lead to premature wear or failure. The wire rope's capacity to handle vertical loads is compromised when side loading occurs, as it is not designed to bear forces from angles other than straight down. This can cause fatigue, fraying, or even breakage, posing safety risks. Therefore, understanding the effects of side loading on the wire rope is crucial for crane operators to ensure safe and efficient operation.