The invention belongs to the test loading technology, and relates to a major-
diameter airframe test loading clamp. The major-
diameter airframe test loading clamp comprises a
butt joint end plate, a force averaging ring and
skin. The
butt joint end plate is of a circular ring structure matched with an
airframe transition section, an inner ring and an outer ring of the
butt joint end plate are surrounded by the force averaging ring, one side of the force averaging ring is connected with the butt joint end plate, the other side of the force averaging ring is connected with a loading device through the
skin, and the loading device is used for exerting concentrated loads. The major-
diameter airframe test loading clamp is applied to a certain type
airplane wing body combined
body force transmission characteristic test, accurate
exertion of various loads on a butt joint end frame section is achieved, rationality of
stress distribution of a butt joint end frame is guaranteed, good limitation to a tested piece is provided, and convenience is brought to tare of the loading device. In theory, the loading device and the testing technology of the loading device can achieve
exertion of any load on any airframe frame section.