The present invention discloses an actuator lower attachment, and specifically discloses a screw actuator comprising: a main nut; a first secondary nut having a first thread; a second secondary nut having a second thread; and a first attachment device. The first nut, the first secondary nut and the second secondary nut are connected to the first attachment device at a first initial axial spacing between the first secondary nut and the second secondary nut. The first secondary nut is mounted to the first attachment device by a bearing that allows the first secondary nut to rotate relative to the first attachment. The first secondary nut is connected to the second secondary nut through a threaded connection portion having a pitch smaller than a pitch of a thread of the screw actuator shaft.When the main nut fails, the threads of the first and second secondary nuts are rotated relative to each other against the thread load of the screw shaft, and the first and second secondary nuts are moved from a first axial spacing therebetween to a different second axial spacing.
本发明公开了致动器下部附接件,并具体公开了螺杆致动器,其包括:主螺母;具有第一螺纹的第一次螺母;具有第二螺纹的第二次螺母;以及第一附接装置。第一螺母、第一次螺母和第二次螺母以第一次螺母与第二次螺母之间的第一初始轴向间距连接到第一附接装置。第一次螺母通过允许第一次螺母相对于第一附接件旋转的轴承安装到第一附接装置。第一次螺母通过具有小于螺杆致动器轴的螺纹的螺距的螺距的螺纹连接部连接到第二次螺母。当主螺母失效时,第一次螺母和第二次螺母的螺纹抵靠螺杆轴的螺纹负载从而相对于彼此旋转,并且第一次螺母和第二次螺母从两者之间的第一轴向间距移动成不同的第二轴向间距。
ACTUATOR LOWER ATTACHMENT
致动器下部附接件
2020-12-15
Patent
Elektronische Ressource
Chinesisch
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