There are 5 key steps to making sure that safety is a main concern. The initial step is completing a Walk-Around Inspection to be able to insure that the model is visually safe. Then check if the worksite is safe to use with a Worksite Assessment. The Function Test is the third step in order to determine whether or not the model is safely functioning. The 4th thing to take into account is Proper Operation, in order to know whether or not the unit is safely working. Lastly, Proper Shutdown must 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 machine that stands on a triangular footprint and lifts heavy weights to impressive heights. The main goal 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. Normally the rear axle oscillates and thus, the back wheels are not a part of the base. The telehandler remains upright as long as the equipment's center of gravity, that 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 positioned on the forks whilst the boom is down, the center of gravity down and forward. The load if lifted will move the center of gravity upwards to the rear. At the same time, when this happens, the stability triangle shrinks. Hence, the higher you raise 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 which can 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 can always 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 machine. The stability triangle is continuously aligned with the centerline of the equipment.