1　问题的提出目前越来越多的钢丝绳生产企业在更新设备时优先选用大轴承捻股机来代替托轮式捻股机。此前工字轮直径为 4 5 0ｍｍ的国产大轴承捻股机工字轮数最多 18个 ,发达国家如日本宫崎生产的同种规格(工字轮直径 4 5 0ｍｍ)的大轴承捻股机工字轮数达到 30个。为满足行业用 A problem raised At present, more and more wire rope manufacturers in the update of equipment preferred to use large bearing twisting machine instead of care-type twisting machine. Prior to the wheel diameter 4500mm domestic large bearing twisting machine the number of I-shaped wheels up to 18, developed countries such as Japan’s Miyazaki production of the same specifications (I-wheel diameter 45mm) large bearing twisting machine The number of word turns up to 30. To meet the industry