Supporting and stabilizing device suitable for fixing a load to a carrier, stabilizing the load with respect to the carrier; said device comprising: - a first attachment for a carrier, - a second attachment for a load; - a first articulation means connected to the first attachment , - a second articulation means connected to the second attachment , - at least one stabilization means disposed between the first articulation means and the second articulation means ; wherein said at least one stabilization means comprises: - at least one arm provided with a longitudinal axis (Y) and having two ends that are rotatably connected to the first and to the second articulation means , - a fixed back piece integral with the arm and provided with a passageway ; - a sliding guide means of tubular shape connected to the arm ; - a rod with an axis (H); said rod being connected to an articulation means by means of a connecting rod ; said rod crossing the passageway of the fixed back piece and being slidingly inserted in the sliding guide means ; and - an elastic means provided with a first end associated with the sliding guide means and a second end connected to the rod ; device characterized in that the sliding guide means is configured in such a way that the rod can vary the orientation of its axis (H) relative to the longitudinal axis (Y) of the arm . - a first attachment for a carrier, - a second attachment for a load; - a first articulation means connected to the first attachment , - a second articulation means connected to the second attachment , - at least one stabilization means disposed between the first articulation means and the second articulation means ; wherein said at least one stabilization means comprises: - at least one arm provided with a longitudinal axis (Y) and having two ends that are rotatably connected to the first and to the second articulation means , - a fixed back piece integral with the arm and provided with a passageway ; - a sliding guide means of tubular shape connected to the arm ; - a rod with an axis (H); said rod being connected to an articulation means by means of a connecting rod ; said rod crossing the passageway of the fixed back piece and being slidingly inserted in the sliding guide means ; and - an elastic means provided with a first end associated with the sliding guide means and a second end connected to the rod ; - at least one arm provided with a longitudinal axis (Y) and having two ends that are rotatably connected to the first and to the second articulation means , - a fixed back piece integral with the arm and provided with a passageway ; - a sliding guide means of tubular shape connected to the arm ; - a rod with an axis (H); said rod being connected to an articulation means by means of a connecting rod ; said rod crossing the passageway of the fixed back piece and being slidingly inserted in the sliding guide means ; and - an elastic means provided with a first end associated with the sliding guide means and a second end connected to the rod ; device characterized in that the sliding guide means is configured in such a way that the rod can vary the orientation of its axis (H) relative to the longitudinal axis (Y) of the arm . <EOS>