近年来,国外许多国家的飞机装配型架已广泛采用多支点支承,它通过可调支承点浮置于地坪上。若地坪下沉变形时只要调节支承点来调整型架使之免受影响。使用可调支承型架,不仅解决了过去在安装大、中型的型架时必须打庞大而厚实的混凝土地基的问题,而且大大地缩短了型架安装或检修的周期,特别是在机种更换时能迅速地、方便地搬迁型架。在多支点型架中,国外有些公司较多地采用了三支点支 In recent years, aircraft mounting frames in many foreign countries have widely adopted multi-fulcrum support, which floats on the floor through adjustable support points. If the floor deformation deformation as long as the support points to adjust the frame so that it is not affected. The use of adjustable support frames not only solves the problem of having to hit large and thick concrete foundations in the past when installing large and medium sized frames, but also greatly shortens the period of installation or maintenance of frames, When quickly and easily removable type frame. In the multi-fulcrum frame, some foreign companies have adopted more than three branches