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    • 3. 发明授权
    • Telescopic variable length device
    • 伸缩式可变长度装置
    • US4446662A
    • 1984-05-08
    • US252191
    • 1981-04-08
    • Martin E. Humphries
    • Martin E. Humphries
    • B64G1/22E04H12/34
    • B64G1/22
    • A telescopic boom especially for deploying a solar array on a spacecraft comprises, instead of the usual compressed gas extender means or the known threaded rod and nut combination, a flexible member extending in the longitudinal direction of the boom and movable in that direction to pick up and extend the tubular boom sections one after another in sequence. The member may be an endless sprocket chain driven by an electric motor and entrained around a wheel mounted at a forward end of a pillar which extends inside the boom to a position near the outer end of the unextended boom, the chain having regularly spaced increased thickness link-plates for engaging matching abutment surfaces of the tubular sections to extend them. As one section comes to its fully extended position, it shifts the next to a position in which it too will be engaged by the chain.
    • 特别是用于在太空船上部署太阳能阵列的伸缩式起重臂包括代替通常的压缩气体扩张器装置或已知的螺杆和螺母组合而构成的柔性构件,该弹性构件在悬臂的纵向方向上延伸并沿该方向移动以便拾起 并且依次延伸管状吊杆段。 该构件可以是由电动机驱动的环形链轮链,并且夹带在安装在支柱前端的轮上,该支柱在悬臂内部延伸到靠近未延伸臂的外端附近的位置,链条具有规则间隔的增加的厚度 连接板,用于接合管状部分的匹配的邻接表面以使它们延伸。 随着一个部分到达完全扩展的位置,它将下一个转移到一个位置,它也将由链条引导。