The invention discloses a folding and unfolding mechanism with a high folding and unfolding ratio, a folding and unfolding device and a satellite platform thereof, the folding and unfolding mechanism comprises a driving connecting rod folding and unfolding mechanism and a driven connecting rod folding and unfolding mechanism, the driving connecting rod folding and unfolding mechanism comprises an upper rocker and a lower rocker which are rotationally connected, and the lower rocker is provided with a thermally-induced deformation rotary driving joint for providing motive power; the thermally-induced deformation rotary driving joint is fixed to a lower driving rod fixing block, the driven connecting rod folding and unfolding mechanism comprises an upper driven rod and a lower driven rod which are rotationally connected, the upper driving rod fixing block is fixedly connected with the upper top plate, and the lower driving rod fixing block is connected with the lower bottom plate. The structure is simple and reliable, the whole structure can be compressed and folded, the folding-unfolding ratio is high, meanwhile, the requirement of the whole structure for the rotating angle of the driving joint is low, and the contradiction problem of large deformation and high bearing of a shape memory alloy driving mechanism is effectively solved; the requirements that the whole high-folding-unfolding-ratio framework mechanism of the satellite can be compressed to the maximum in the carrying process and can be unfolded on orbit after being deployed are met.
本发明公开了一种高折展比的折展机构、折展装置及其卫星平台,包括主动连杆折展机构和从动连杆折展机构,主动连杆折展机构包括转动连接的上、下摇杆,下摇杆设置有用于提供原动力的热致变形旋转驱动关节,热致变形旋转驱动关节固定于下主动杆固定块,从动连杆折展机构包括转动连接的上、下从动杆,上主动杆固定块与上顶板固定连接,下主动杆固定块与下底板相连。本发明结构简单可靠、整体可压缩折叠、具有较高的折展比高,同时整个结构对驱动关节的转角要求较低,有效解决了形状记忆合金驱动机构大变形与高承载的矛盾问题,满足了卫星高折展比骨架机构运载过程中整体可极致压缩、部署后可在轨展开的需求。
Folding and unfolding mechanism with high folding and unfolding ratio, folding and unfolding device and satellite platform thereof
一种高折展比的折展机构、折展装置及其卫星平台
2024-05-03
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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