To ensure that safety is a top priority, there are 5 key steps. In order to make certain that the model is visually safe, the initial step is to perform a Walk-Around Inspection. Next 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 unit is safely functioning. The 4th thing to consider is Proper Operation, in order to determine whether or not the model is safely working. Last of all, Proper Shutdown has to be checked so as 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 which stands on a triangular footprint and lifts heavy weights to impressive heights. The key objective is to keep the telehandler upright, but of course there are risks.
The telehandler's triangular base consists of the two front wheels and the rear-axle pivot point. The rear axles normally oscillates, hence the rear wheels are not considered part of the base. The telehandler remains upright so long as the center of gravity of the equipment, which is defined as the point in 3 dimensions around which the weight of the machine is balanced, stays oriented inside the stability triangle.
When the boom is down, adding a load to the forks at that time changes the center of gravity forward and down. Raising the load would change the center of gravity to the rear and upwards. At the same time, the stability triangle shrinks when this happens. Therefore, the higher you raise a load, the less of a margin for error you have because the stability triangle lessens.
With a stable but small stability triangle, it leaves less room for the center of gravity to move left or right. This wandering action could change the stability triangle, leaving less room for the frame to remain balanced if it is not completely level. Like 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 somewhere 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 always aligned with the telehandler's centerline.