What is the main cause of overturning accidents when a stacker takes a sharp turn?

The primary reason overturning accidents occur when a stacker takes a sharp turn is due to centrifugal force. When a vehicle, such as a forklift or stacker, makes a turn, the load's momentum causes it to continue moving in a straight line rather than following the curve of the turn. This results in a force that pushes outward from the center of the turn, which can increase the likelihood of the vehicle tipping over, especially if the load is raised or if the vehicle has a high center of gravity.

In the context of a stacker, sharp turns can exacerbate this situation because the faster the stacker goes and the sharper the turn, the greater the centrifugal force acting on the vehicle. This does not just involve the weight of the load but how that weight interacts with the dynamics of turning. When the center of gravity is moved too far outside the vehicle's base, it can lead to a loss of stability and, subsequently, an overturn.

Understanding this dynamic is crucial for the safe operation of stackers and other lifting equipment, as it highlights the importance of operating within safe speed limits and making gradual turns.