Turbomachine assembly comprising a half-shell casing bearing variable-pitch inlet stator vanes

An assembly for a turbomachine comprising:

• an outer casing made of half-shells, the outer casing comprising a first and a second hemispherical outer shroud;
• an inner casing located radially inside the outer casing and comprising a first and a second hemispherical inner shroud;
• a plurality of guide vanes mounted between the outer casing and the inner casing;
• a structural casing comprising a generally cylindrical flange located radially inside the inner casing and having a symmetry of revolution with respect to an axis;
• and
• a system for blocking the inner casing on the structural casing, the blocking system comprising a generally annular tab fixed on one among the inner casing and the structural casing and a complementary chute fixed on the other among the inner casing and the structural casing, the chute being configured to receive the tab and block it along the axis relative to the structural casing.