There are 5 important steps to ensuring safety is a top priority. The initial step is completing a Walk-Around Inspection to be able to assure that the model is visually safe. After that check if the worksite is safe to utilize with a Worksite Assessment. The Function Test is the third step so as to know whether or not the model is working safely. The 4th thing to consider is Proper Operation, so as to know whether or not the model is safely working. Lastly, Proper Shutdown should be checked in order to make sure the unit is in a safe place and is capable of shutting down correctly.
There is a machine which lifts heavy weights to impressive heights upon a triangular footprint at the center of the 5 steps and this regulation. The main objective is to be able to keep the telehandler upright, but of course there are risks.
The two front wheels, and the rear-axle pivot point make up the telehandler's triangular base. Usually the back axle oscillates and hence, 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 equipment is balanced, stays oriented inside 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. Raising the load would move the center of gravity to the rear and upwards. At the same time, the stability triangle shrinks when this happens. Hence, the higher you lift a load, the less of a margin for error you have as 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 completely level. Like for instance, imagine the center of gravity resembling a plumb bob hanging from the boom. You would always be able to find the center of gravity someplace on a totally vertical line between the center of the ground and a point on the boom. If the frame is not level, the center of gravity would not be oriented over the equipment's centerline. The stability triangle is continuously aligned with the machine's centerline.