Self-propelled stair climber

Self-propelled stair climber (1) for goods comprising:

• first and second tracks (2, 3) motorized and having an elongated configuration parallel to a straight forward travel direction of the stair climber;
• a loading surface (4) implemented to tilt with respect to the tracks (2, 3) around a first transverse axis, preferably perpendicular to the tracks;
• an actuated stabilization member (6′) movable between an extracted position so that the weight of the stair climber is carried at least in part by the stabilization member and a retracted position in which the stabilization member is not loaded by the weight of the stair climber;
• a proximity or support sensor (33) carried by the stabilization member (6′) to send a signal of approach or contact with a floor;
• an electronic control unit programmed to:
• activate the first and second tracks (2, 3) on the basis of the signal when the stabilization member (6′) is extracted;
• and
• check an inclination of the loading surface (4) so that the inclination is maintained in a predefined angular range with respect to a horizontal direction;
• said stair climber further comprising a hollow support structure (17) to which the loading surface (4) is hinged and connected to the first and second tracks (2, 3), in which a first actuator (18) is housed to control the inclination of the loading surface (4) and a second actuator (19) to control the stabilization member (6′);
• wherein the first and second actuators (18, 19) are arranged so that, when in a retracted configuration, they are flanked by the first and second tracks (2, 3).