Abstract: An electromechanical linear actuator may include: a containment structure; first and second lead nuts; two electric motors operably connected to rotate the lead nuts; a shaft inserted in the lead nuts; and coupling means with an intermediate coupling stage configured to mechanically couple the lead nuts with the shaft. A method of assessing fault in an electromechanical linear actuator may include: actuating the electric motors to drive the lead nuts in a same direction of rotation or in opposite directions of rotation; during the actuating of the electric motors, checking whether or not the shaft translates relative to the containment structure; checking for mechanical failure of the intermediate coupling stage with either lead nut, to actuate the electric motors in the same direction of rotation; and checking for mechanical failure of the shaft with the intermediate coupling stage, to actuate the electric motors in the opposite directions of rotation.

Abstract: An electromechanical linear actuator may include: a containment structure; a pushing member designed to translate relative to the containment structure to at least partially come out of the containment structure during operation of the electromechanical linear actuator; a mechanical reduction apparatus in the containment structure and configured to rotate about an axis of rotation; motor means in the containment structure operably connected with the mechanical reduction apparatus to rotate about the axis of rotation; a shaft inserted in the mechanical reduction apparatus and connected to the pushing member, wherein the shaft is mechanically connected with the mechanical reduction apparatus so that a rotational movement of the mechanical reduction apparatus will cause the shaft to translate along the axis of rotation; and a rotation-preventing mechanism operable on the shaft to prevent the shaft from rotating about the axis of rotation.

Abstract: The present disclosure relates to a method of assessing the presence of an electrical, electronic and/or mechanical fault in an electromechanical linear actuator (1), said electromechanical linear actuator (1) comprising a containment structure (2); first and second independent lead nuts (8, 9), each having its own thread and its own thread direction, two electric motors (5A, 5B) disposed in the containment structure (2) and operably connected with said first and second lead nuts (8, 9) to rotate them about said axis of rotation (X); a shaft (6) inserted in said first and second lead nuts (8, 9), a rotation-preventing mechanism (7) operable/active on said shaft (6) to prevent the shaft (6) from rotating about said axis of rotation (X); coupling means (10, 15, 11), configured to mechanically couple said first and second lead nuts (8, 9) with said shaft (6), so that a rotational movement of said first and/or second lead nuts (8, 9) will cause a translation of said shaft (6) along said axis of rotation (X).

Abstract: The present disclosure relates an electromechanical linear actuator (1) of the type comprising a containment structure (2), a pushing member (3) designed to translate relative to the containment structure (2) to at least partially project out of the containment structure during operation of the actuator, a mechanical reduction apparatus (4) disposed in the containment structure (2) and rotating about an axis of rotation (X), motor means (5) arranged in the containment structure (2) and operably connected with the mechanical reduction apparatus (4) to rotate it about the axis of rotation (X), a shaft (6) inserted in the mechanical reduction apparatus (4) and connected to the pushing member (3), the shaft (6) being mechanically connected with the mechanical reduction apparatus (4) such that a rotational movement of the mechanical reduction apparatus (4) will cause a translational movement of the shaft (6) along the axis of rotation (X) and a rotation-preventing mechanism (7) operable on the shaft (6) to prevent