Static test method, device and equipment for ejection working condition of composite shell

The invention discloses a static test method, device and equipment for ejection working conditions of a composite shell, and relates to the field of carrier rocket tests.The method comprises the steps that the axial mounting position of a column section loading piece on the shell is determined based on the requirement that loads of all sections of the shell can cover the total load in the set static test process; a plurality of metal loading plates containing loading bosses are fixed to the determined axial mounting positions of the column section loading parts in a surrounding mode in a winding and bonding mode; a bottom oil cylinder is connected with a shaft pressing plate and a metal loading plate through a hanging belt, loading is synchronously carried out on the front skirt of the shell and the metal loading plate, and differential loading of the front skirt and the rear skirt of the shell in the static test is achieved. According to the invention, a staged loading mode is adopted to carry out an ejectio