Move a pulley set enlarge to return to rope round the route of travel satisfies a steel wire rope to use early elongation of demand.
动滑轮组放大回绳轮行程满足钢丝绳使用初期伸长的需要。
The structural elongation characteristic of wire rope has been analyzed.
主要分析研究了钢丝绳的结构性伸长特性及影响因素。
The utility model can prevent the pulling rope from mutually squeezing and realize the smooth retraction and elongation of the window curtain.
本实用新型可防止拉绳互相叠挤，使窗帘片可平顺收放。
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