There are 5 key steps to making sure that safety is a top priority. The first step is completing a Walk-Around Inspection in order to insure that the unit is visually safe. After that check if the worksite is safe to operate in with a Worksite Assessment. The Function Test is the third step so as to know whether or not the unit is working safely. The 4th thing to consider is Proper Operation, so as to know whether or not the unit is safely operating. Last of all, Proper Shutdown must be checked in order to make sure the model is in a safe place and is capable of shutting down properly.
There is a machine that 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 maintain the telehandler upright, but of course there are dangers.
The two front wheels, and the rear-axle pivot point make up the triangular base of the telehandler. Usually the rear axle oscillates and hence, the rear wheels are not a part of the base. The telehandler remains upright as long as the center of gravity of the equipment, which is defined as the point in 3 dimensions around which the machine's weight is balanced, stays oriented in the stability triangle.
When a load is placed on the forks while the boom is down, the center of gravity down and forward. The load if lifted will change the center of gravity upwards to the rear. At the same time, the stability triangle shrinks when this occurs. Hence, the higher you lift a load, the less of a margin for error you have since the stability triangle lessens.
With a small but stable stability triangle, it leaves less room for the center of gravity to move right or left. This wandering action could change the stability triangle, leaving less room for the frame to remain balanced if it is not perfectly level. For example, imagine the center of gravity resembling a plumb bob hanging from the boom. You could always find the center of gravity someplace 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 equipment's centerline. The stability triangle is continuously aligned with the machine's centerline.