There are 5 important steps to ensuring safety is a top priority. The initial step is completing a Walk-Around Inspection in order to assure that the model is visually safe. Next check if the worksite is safe to operate in with a Worksite Assessment. The Function Test is the third step in order to determine whether or not the unit is functioning safely. The 4th thing to take into account is Proper Operation, so as to determine whether or not the unit is safely working. Last of all, Proper Shutdown should be checked in order to make certain 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 machinery that stands on a triangular footprint and lifts heavy weights to impressive heights. The key goal is to maintain the telehandler upright, but of course there are dangers.
The triangular base of the telehandler comprises the rear-axle pivot point and the two front wheels. The back axles normally oscillates, thus the rear wheels are not considered 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 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 time moves the center of gravity down and forward. Raising the load will change the center of gravity to the rear and upwards. At the same time, the stability triangle shrinks when this happens. Thus, the higher you raise 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 right or left. 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. For example, imagine the center of gravity resembling a plumb bob hanging from the boom. You will 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 will not be oriented over the centerline of the machinery. The stability triangle is always aligned with the centerline of the equipment.