Overhead Crane Practice Test

What controls the vertical movement of an overhead crane?

1. Hoist controller

2. Bridge and trolley controller

3. Load block

4. Main switch

The correct answer is: Bridge and trolley controller

The vertical movement of an overhead crane is primarily controlled by the hoist controller. This is the component that directly manages the raising and lowering of the load through the hoist mechanism. The hoist is essential in facilitating vertical motion, enabling the crane operator to lift loads off the ground or lower them as needed during operation. While the bridge and trolley controller plays a crucial role in controlling the horizontal movement along the crane's structure, it does not directly influence the vertical movement of the load. The load block is involved in holding and supporting the load being lifted but does not control the movement itself. The main switch is necessary for powering the crane but is not responsible for the manipulation of vertical movement. By understanding the role of the hoist controller, operators can effectively maneuver loads vertically, ensuring safety and precision during operations.