Tandem suspension system for a vehicle, with pivot integrated in the vehicle frame

The present invention relates to a tandem suspension system for vehicle, with the leaf spring connected in their middle part to a support, while its ends are connected to the vehicle axles. At each one of the sides of the vehicle, the support (23) is laterally and externally connected to a side member (21) of the vehicle frame, and includes a pivot (24) wherein a leaf spring is connected centrally and at the bottom (26), in a laterally pivoting way. The pivot is placed laterally to the side member and both its ends rest on the support.