Telehandler

A telehandler comprising at least one base frame, provided with ground support wheels and stabilisers, at least one telescopic lifting arm articulated to said base frame, at least one piece of work equipment supported by said lifting arm, and an electronic control unit configured to:

• determine, by sensors, one or more position parameters indicative of a current operating position of the telehandler from among the possible operating positions of the telehandler;
• calculate a maximum load that can be lifted by the equipment in the current operating position;
• and
• activate a safety procedure, if the equipment in the current operating position is subjected to a load that exceeds the maximum load that can be lifted, wherein the maximum load that can be lifted by the equipment in the current operating position is calculated by the steps of:
• determining an allowable load value for at least one criticality condition of the telehandler;
• assigning to the maximum liftable load the allowable load value determined for said at least one criticality condition of the telehandler;
• wherein determining the allowable load value for each criticality condition of the telehandler is carried out by a computation procedure comprising:
• determining a safety factor for said criticality condition;
• determining, for said criticality condition, a maximum stress value in the current operating position, based on the position parameters and/or predefined structural parameters of the telehandler;
• calculating, for said criticality condition, an allowable stress value in the current operating position as the product of said safety factor by said maximum stress value in the current operating position;
• and
• determining, for that criticality condition, the allowable load value as a function of that allowable stress value.