Which of the following is NOT a type of conveying equipment?

The correct answer is escalator, as it is often categorized differently from the other options listed. Each of the other options—elevator, dumbwaiter, and lifts—are specifically designed for transporting people or goods vertically between floors in a building. Elevators and lifts facilitate the movement of passengers and, in some cases, freight, providing vertical mobility in structures.

On the other hand, escalators are inclined moving walkways designed for people to ascend or descend between levels, but they operate on a different mechanism and are classified in the context of moving sidewalks or travelators. Therefore, while escalators are a form of mechanical transport, they streamline pedestrian flow rather than serve as traditional conveying equipment in the same way that elevators, dumbwaiters, and lifts do. This distinction is why escalators are not considered a type of conveying equipment in the same vein as the other options.