To ensure that safety is a main concern, there are 5 important steps. In order to ensure that the unit is visually safe, the first step is to perform a Walk-Around Inspection. Next check if the worksite is safe to use with a Worksite Assessment. The Function Test is the third step so as to determine whether or not the model is safely functioning. The 4th thing to consider is Proper Operation, in order to determine whether or not the model is safely working. Last of all, Proper Shutdown has to be checked so as to make sure the unit is capable of shutting down correctly and is in a safe place.
At the center of the 5 steps and this regulation, there is a machine which stands on a triangular footprint and lifts heavy weights to impressive heights. The key objective is to keep the telehandler upright, but surely there are dangers.
The two front wheels, and the rear-axle pivot point make up the triangular base of the telehandler. Typically the back axle oscillates and thus, the rear wheels are not a part of the base. The telehandler remains upright so long as the machine's center of gravity, that is defined as the point in 3 dimensions around which the weight of the equipment is balanced, stays oriented in the stability triangle.
When the boom is down, adding a load to the forks at that same time moves the center of gravity down and forward. Lifting the load would change the center of gravity upwards and to the rear. At the same time, when this occurs, the stability triangle shrinks. Hence, the higher you lift a load, the less of a margin for error you have because the stability triangle lessens.
When the stability triangle is small, it leaves less room for the center of gravity to move left or right. It is this wandering action which could change the stability triangle and leave less room for the frame to remain balanced if it is not perfectly level. Like for example, imagine the center of gravity resembling a plumb bob hanging from the boom. You can always find the center of gravity somewhere on a totally vertical line between a point on the boom and the center of the ground. If the frame is not level, the center of gravity would not be oriented over the centerline of the machinery. The stability triangle is always aligned with the equipment's centerline.