摘要:
Described is a linear electro-mechanical actuator (1) preferably for water cutting, which makes it possible to significantly improve the working conditions of the actuator (1), so as to optimise its load capacity and increase the working life of the of the actuator (1), and which makes it possible to reduce the risk of breakage or damage of the actuator (1) following loss of control of the movement aimed at producing the force applied by the actuator (1).
摘要:
A linear actuator includes a back fixture formed of a first part (1), a second part (2), and a plastic bearing (3), the first part (1) connecting with the second part (2), grooves are disposed inside the first part and the second part, and connection structures are disposed outside the plastic bearing (3). The plastic bearing (3) is secured inside the first part (1) and the second part (2) with the grooves and connection structures. The back fixture can be directly fitted onto a bed frame by applying a certain force to make an elastic deformation of this back fixture, thereby accelerating the installation of the actuator. This not only significantly reduces the noise caused by the connecting portion during the operation of the actuator, but also reduces the wearing of connecting parts, thereby significantly extending maintenance-free life.
摘要:
Actuator (29) for an aircraft turbine engine nacelle with a notably one-piece annular rear part, comprising: - an engine assembly comprising a nut which is capable of rotating but not of translational movement, and means for turning this nut, and - a screw assembly (37) comprising a screw (39) capable of translational movement without rotating, in mesh with said nut and a ball joint (43) at one end of this screw (39) intended to be fixed to said element.
摘要:
Provided is a screw motion mechanism capable of facilitating connection of an axial end of a threaded shaft with respect to a structural body while preventing a rotation of the threaded shaft, and capable of preventing application of an excessive torque to a nut member and the threaded shaft and preventing damage on those members. The screw motion mechanism includes: a threaded shaft (30) having an outer peripheral surface provided with a helical thread groove, the threaded shaft (30) having at least one axial end coupled to a first structural body; a nut member (40) held in a rotatable manner with respect to a second structural body which is movable in an axial direction of the threaded shaft with respect to the first structural body, the nut member (40) being threadedly engaged with the threaded shaft; and a spherical joint (32) for coupling the at least one axial end of the threaded shaft (30) to the first structural body, the spherical joint (32) including: a spherical portion (33, 61); and a sphere receiving portion (36, 60) for housing the spherical portion. When assuming an axial force applied to the threaded shaft (30) as a variable, a line of a rotational torque intersects with a line of a sliding torque in a graph, and the sliding torque exceeds the rotational torque under an initial state in which the axial force is not applied to the threaded shaft (30).
摘要:
A linear actuator comprising a spindle-based linear drive (1) having an inner threaded spindle (5) and an outer element (2) surrounding the threaded spindle (5), in which the threaded spindle (5) can be moved in the axial direction; and a telescopic housing (20) with a first telescope part (21) and a second telescope part (22), which is surrounded at least in part by the first telescope part (21). On its side facing the first telescope part (21), the second telescope part (22) has an adapter part (24) that is connected rotationally fixedly to the second telescope part (22) and has a central opening. The linear drive has a connecting element (30) that is mounted on the outer element (2) and comprises snap elements (31) that are engaged with the central opening of the adapter part (24) in such a manner that the connecting element (30) is held in the adapter part (24).
摘要:
Utilisation d'au moins une vis de fixation (12) qui comporte des moyens de détection (14, 15, 17a, 17b, 20) de la mise sous charge de la voie secondaire d'un actionneur de commande de vol, ou associée à une bague comportant de tels moyens, pour la fixation de l'attache haute de la voie secondaire d'un actionneur de commande de vol.
摘要:
Eine Stelleinrichtung zum Positionieren einer Last (32) umfasst eine Spindel (5) und eine auf der Spindel (5) angeordnete Spindelmutter (2), wobei entweder die Spindelmutter (2) in einem Getriebegehäuse (1) drehbar und achsial unverschiebbar gelagert ist und durch Drehung der Spindelmutter (2) die Spindel (5) zum Positionieren der Last (32) achsial verstellbar ist oder die Spindel (5) im Getriebegehäuse (1) drehbar und achsial unverschiebbar gelagert ist und durch Drehung der Spindel (5) die Spindelmutter (2) zum Positionieren der Last (32) achsial verstellbar ist. Das Getriebegehäuse (1) weist auf zwei gegenüberliegenden Gehäuseseiten (23, 24) Sacklöcher (25, 26) auf, in die Schwenklagerbuchsen (27, 28) zur Aufnahme von Schwenkzapfen (36) eingepresst sind.