国产aⅴ视频免费观看丨三女同志亚洲人狂欢丨四虎地址8848精品丨亚洲美女被黑人巨大在线播放丨国产亚洲精品久久久久久国丨人人添人人妻人人爽夜欢视av丨国产av夜夜欢一区二区三区丨草色网丨国产av国片偷人妻麻豆丨国产精品女人和拘丨国产九九丨67194少妇丨黄色一级片免费播放丨又黄又爽又色成人免费体验丨国产一区二区三区黄丨国产传媒中文字幕丨日本一本草久国产欧美日韩丨超碰2020丨国产精品久久人妻无码网站一区丨插吧插吧综合网

  The short stress cardan shaft bracket is aimed at the problems of the non rotating support cage used in the production process of line bar, such as the unbalanced gravity of the left and right pull rods, the difficulty of alignment between the connecting shaft and the roll center line, etc. according to the characteristics of the disc spring, such as large rigidity and strong damping and vibration absorption capacity, combined with the principle of lever balance, the disc spring flexible structure is introduced to realize the self balance adjustment of the connecting shaft, so as to solve the problems The above problems have been solved.