There are 5 key steps to ensuring safety is a main concern. The first step is completing a Walk-Around Inspection to be able to insure that the unit is visually safe. Next assess if the worksite is safe to use 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 take into consideration is Proper Operation, in order to know whether or not the model is safely operating. Last of all, Proper Shutdown should be checked in order to make sure the model is in a safe place and is capable of shutting down properly.
There is a machinery that lifts heavy weights to impressive heights upon a triangular footprint at the center of the 5 steps and this regulation. The key objective is to keep the telehandler upright, but of course there are risks.
The rear-axle pivot point, and the two front wheels make up the triangular base of the telehandler. Normally the back 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 machine, that is defined as the point in 3 dimensions around which the machine's weight is balanced, stays oriented in 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 change the center of gravity to the rear and upwards. At the same time, the stability triangle shrinks when this occurs. Thus, the higher you raise 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 perfectly level. For instance, 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 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 machine's centerline. The stability triangle is continuously aligned with the machine's centerline.