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为了准确测验出航空导管无扩口连接处的旋转弯曲疲劳寿命,基于航空部有关标准,在参考目前国内外其他类型旋转弯曲疲劳试验机的基础上,设计了一套包含同步带传动机构、主轴机构、挠度调节机构、尾座管端固定机构及计数机构在内完整的一套设备系统。该设备能同时对带内压的六根航空无扩口连接导管进行不同挠度值的旋转弯曲疲劳试验,大大增大了试验效率,为国内同类产品的设计起到了一个引领作用。
In order to accurately test the rotation bending fatigue life of a non-flared connection of an air duct, based on the relevant standards of the Ministry of Aviation, based on the reference of other types of rotating bending fatigue testing machines at home and abroad, a set of equipment including a timing belt transmission mechanism, Institutions, deflection adjustment agencies, Tailstock tube-end fixed institutions and counting agencies, including a complete set of equipment systems. The device can perform rotating bending fatigue test with different deflection values on six aviation non-flared connecting ducts with internal pressure at the same time, which greatly increases the test efficiency and plays a leading role in the design of similar products in China.