东北粗口国产床)_黄色视频国产毛片_国产在线美女福利观看网_宅宅看电影在线观看_毛片网站在线播放_久久99精品免费播放_日韩欧美亚洲国产三级黄色片_美女亚洲一区二区三区_2020国产精品偷窥盗摄_国产黄色网址在线观看视频

  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.