The stability triangle is a widely recognized classic theoretical framework used in the material handling industry to describe and evaluate the inherent stability performance of forklifts. For all types of counterbalance forklifts including electric forklifts, this simple and practical model can help operators and managers clearly understand the stable boundary of the vehicle, so as to avoid safety accidents caused by misoperation.

The stability triangle is defined by three key points that form a closed triangular stable area. The first two points are the center points of the two front load-bearing tires of the forklift, and the third point is the gravity center position of the counterweight set at the rear of the vehicle. Any vertical projection point of the total combined gravity of the vehicle body and the carried load that falls inside this triangle means the forklift is in a stable state that will not tip over. Once the total gravity projection moves out of the boundary of this triangle, the forklift will lose its balance and face the risk of rollover.

In actual daily operation, many improper operations will push the total gravity out of the stability triangle area. For example, overloading beyond the rated load limit will make the center of gravity of the carried cargo move far forward, breaking through the front boundary of the stability triangle. If operators drive at an excessive speed when turning, the lateral centrifugal force will push the total center of gravity to shift sideways and exceed the side boundary of the triangle. When the fork is lifted to a very high position with loaded cargo, the overall center of gravity of the whole system will rise significantly, which will also narrow the actual stable range of the stability triangle and increase the risk of sideslip.

Mastering the basic logic of the stability triangle can effectively guide operators to develop good operation habits. It is recommended that all forklift operators strictly follow the rated load specification, keep the cargo at a low height when driving, slow down in advance before steering, and avoid lateral driving on steep ramps. As a professional new energy material handling equipment service provider, Jian Shu New Energy focuses on BYD electric forklifts, and we provide systematic safety operation training for all our clients to help teams reduce operation risks in the long term. If you have any demands for electric forklift parameter consultation, safety operation guidance, you can send emails to [email protected] for further communication.