There are 5 key steps to making certain that safety is a main concern. The initial step is completing a Walk-Around Inspection in order to insure that the model is visually safe. After that check if the work location is safe to operate in with a Worksite Assessment. The Function Test is the third step in order to know whether or not the unit is working safely. The 4th thing to consider is Proper Operation, in order to know whether or not the model is safely working. Lastly, Proper Shutdown should be checked in order to make sure the model is in a safe place and is capable of shutting down correctly.
At the center of the 5 steps and this regulation, there is a machine that stands on a triangular footprint and lifts heavy weights to impressive heights. The key objective is to maintain the telehandler upright, but surely there are risks.
The two front wheels, and the rear-axle pivot point make up the triangular base of the telehandler. Normally the back axle oscillates and therefore, the back wheels are not a part of the base. The telehandler remains upright as long as the machine's center of gravity, that is defined as the point in 3 dimensions around which the weight of the machinery is balanced, stays oriented inside the stability triangle.
When the boom is down, adding a load to the forks at that time changes the center of gravity down and forward. Lifting the load will change the center of gravity upwards and to the rear. At the same time, when this occurs, the stability triangle shrinks. Therefore, the higher you lift a load, the less of a margin for error you have since the stability triangle lessens.
When the stability triangle is small, it leaves less room for the center of gravity to move right or left. It is this wandering action that could change the stability triangle and leave less room for the frame to remain balanced if it is not completely level. 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 will not be oriented over the centerline of the machine. The stability triangle is always aligned with the machine's centerline.