The invention provides an umbrella-shaped unfolding and folding mechanism based on shape memory alloy and a spacecraft, and relates to the technical field of spaceflight equipment.The umbrella-shaped unfolding and folding mechanism based on the shape memory alloy comprises a first pipe body, a second pipe body, a base, a tensioning lock net, a radiation rib, an SMA driving spring, a propelling plate, a sliding block and a power source; the first pipe body sleeves the second pipe body, and the lower ends of the first pipe body and the second pipe body are respectively connected with the base; the power supply is arranged in the base and is electrically connected with the SMA driving spring; a window communicating with the gap is formed in the second pipe body, the pushing plate is hinged to the window, and the sliding block is slidably connected to the inner wall of the second pipe body; the multiple radiation ribs are arranged around the first pipe body at intervals, one end of each radiation rib is hinged to the base, and each radiation rib is connected with the corresponding sliding block through a tension lock net. Compared with the prior art, the umbrella-shaped unfolding and folding mechanism based on the shape memory alloy has the advantages that the stability of the unfolding state is high, and the energy conversion rate and the light weight of the device are remarkably improved.
本发明提供了一种基于形状记忆合金的伞状展收机构及航天器,涉及航天设备技术领域,基于形状记忆合金的伞状展收机构包括第一管体、第二管体、底座、张拉锁网、辐射肋、SMA驱动弹簧、推进板、滑块和电源;第一管体套设于第二管体,第一管体和第二管体的下端分别与底座连接;电源设置于底座内,并与SMA驱动弹簧电连接;第二管体上开设有与间隙连通的窗口,推进板铰接于窗口处,滑块滑动连接于第二管体的内壁;多个辐射肋围绕第一管体间隔设置且一端铰接于底座,每个辐射肋与滑块之间分别通过张拉锁网连接。本发明的基于形状记忆合金的伞状展收机构,相比于现有技术,展开状态的稳定性较大,且能量转化率和装置的轻质化有显著提升。
Umbrella-shaped unfolding and folding mechanism based on shape memory alloy and spacecraft
一种基于形状记忆合金的伞状展收机构及航天器
2025-05-30
Patent
Electronic Resource
Chinese
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