A device for connecting a first unit and a second unit of an articulated vehicle, comprising: - means for connecting the first and second units (2A, 2B), configured to allow a movement on a horizontal plane of said first and second units (2A, 2B), to vary the relative position on said horizontal plane between said first and second units (2A, 2B), and a movement on a vertical plane of said first and second units (2A, 2B), for varying the relative position on said vertical plane between said first and second units (2A, 2B), said connecting means comprising a first rotary joint having a first portion and a second portion rotating relative to each other with respect to a vertical axis to allow the above-mentioned movement on the horizontal plane of said first and second units (2A, 2B); - a pair of connecting elements (10A, 10B), having a first end (11A, 11B) and a second end (12A, 12B), operatively connected, in use, on both sides to the first portion in a rotatable fashion at their first end (11A, 11B); - a pair of shock absorbers (13A, 13B), each having a first end (14A, 14B) and a second end (15A, 15B), the first end (14A, 14B) of each of said shock absorbers (13A, 13B) being connected to the second end (12A, 12B) respectively of one of said connecting elements (10A, 10B), in a rotatable fashion, and the second end of each of said shock absorbers (13A, 13B) being connected, in a rotatable fashion, to the second portion of the connecting means and wherein: - each connecting element (10A, 10B) is movable, in rotation relative to the first portion, between an operating position of maximum dimensions, distal from the first portion, and a non-operating position of minimum dimensions, proximal to the first portion; - the first portion comprises a connecting wall designed to connect to the second unit; - each connecting element (10A, 10B) is positioned, in the operating position of maximum dimensions, parallel to the connecting wall and is positioned, in the non-operating position, to form an angle (α) relative to the connecting wall, having each shock absorber (13A, 13B) of minimum dimensions in the non-operating position; - each connecting element (10A, 10B) has a first end portion (16A, 16B) and a second end portion (17A, 17B). - the second end portion (16A, 16B) of each connecting element (10A, 10B) has a recess (7A, 7B) configured to house the first end (14A, 14B) of each of said shock absorbers (13A, 13B). - means for connecting the first and second units (2A, 2B), configured to allow a movement on a horizontal plane of said first and second units (2A, 2B), to vary the relative position on said horizontal plane between said first and second units (2A, 2B), and a movement on a vertical plane of said first and second units (2A, 2B), for varying the relative position on said vertical plane between said first and second units (2A, 2B), said connecting means comprising a first rotary joint having a first portion and a second portion rotating relative to each other with respect to a vertical axis to allow the above-mentioned movement on the horizontal plane of said first and second units (2A, 2B); - a pair of connecting elements (10A, 10B), having a first end (11A, 11B) and a second end (12A, 12B), operatively connected, in use, on both sides to the first portion in a rotatable fashion at their first end (11A, 11B); - a pair of shock absorbers (13A, 13B), each having a first end (14A, 14B) and a second end (15A, 15B), the first end (14A, 14B) of each of said shock absorbers (13A, 13B) being connected to the second end (12A, 12B) respectively of one of said connecting elements (10A, 10B), in a rotatable fashion, and the second end of each of said shock absorbers (13A, 13B) being connected, in a rotatable fashion, to the second portion of the connecting means and wherein: - each connecting element (10A, 10B) is movable, in rotation relative to the first portion, between an operating position of maximum dimensions, distal from the first portion, and a non-operating position of minimum dimensions, proximal to the first portion; - the first portion comprises a connecting wall designed to connect to the second unit; - each connecting element (10A, 10B) is positioned, in the operating position of maximum dimensions, parallel to the connecting wall and is positioned, in the non-operating position, to form an angle (α) relative to the connecting wall, having each shock absorber (13A, 13B) of minimum dimensions in the non-operating position; - each connecting element (10A, 10B) has a first end portion (16A, 16B) and a second end portion (17A, 17B). - the second end portion (16A, 16B) of each connecting element (10A, 10B) has a recess (7A, 7B) configured to house the first end (14A, 14B) of each of said shock absorbers (13A, 13B).