Structure and wind transport of seasonal snow on the Arctic slope
Structure and wind transport of seasonal snow on the Arctic slope
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北极斜坡季节性积雪的结构和风输送
DOI：
10.1017/s0260305500011629
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发表时间：
1993
影响因子：
2.3
通讯作者：
M. Sturm
中科院分区：
文献类型：
--
作者：
C. Benson;M. Sturm
本发明提供了一种船用绞车，该绞车由连接在其下端的中央操作主轴驱动，以依次驱动减速传动装置连接到绞车的外壳，以在操作主轴向相反方向旋转时可选择的两个可选输出比之一旋转所述外壳。所述操作轴具有相对于下部垂直移动的单独的上部，并且与其花键驱动接合。当操作主轴的上部下降时，它直接联接以驱动外壳，从而提供1：1的第三输出比。传动线上设有单向无级离合器装置，以实现三种输出比，也可使外壳超限。
The invention provides a marine winch driven by a central operating spindle coupled at its lower end to drive reduction gearing in turn coupled to an outer casing of the winch to rotate said casing at one of two alternative output ratios selectable on rotating the operating spindle in opposite directions. The operating spindle has a separate upper portion movable vertically relative to a lower portion and in splined driving engagement therewith. When the upper part of the operating spindle is lowered it is coupled directly to drive the outer casing so as to provide a third, 1:1, output ratio. Unidirectional stepless clutch means are provided in the drive lines to enable the three output ratios to be acheived and also to enable the outer casing to over run.