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AssigneeBeijing University of Aeronautics and Astronautics
InventorsXiaojun YAN, Jiaming LENG, Lei QU, Xiaoyuan WANG, Zhiwei LIU, Weifeng WAN, Huimin LI
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The present invention discloses an SMA wire-driven reusable release mechanism having a self-resetting function. The present invention adopts a structure of two-stage load reduction and one-stage release. First-stage load reduction: a compression rod and a hoop petal, as well as an inclined block and a shell or a sliding block, all cooperate with each other by means of inclined surfaces, which can transfer most of tension load of the compression rod to the shell, leaving only a small part of the load transmitted to a thrust bearing. Second-state load reduction: balls in the thrust bearing are coated with a molybdenum disulfide lubricating coating, which can effectively reduce friction so as to reduce a torque transmitted to a driving shaft. First-stage release: the driving shaft drives a thrust bearing to rotate by a certain angle, causing an upper ring of the thrust bearing to descend to release a certain axial clearance.
An SMA wire-driven reusable release mechanism having a self-resetting function, internally and sequentially comprising an SMA driver assembly, a thrust bearing assembly, a tray assembly, and a separation assembly from bottom to top, and realizing external encapsulating by a shell (1) and a bottom cover (22), wherein
Dependencies are inferred from the claim text.