Connection structure who encloses around passenger train aluminum alloy top cap and steel skeleton

The utility model discloses a connection structure who encloses around passenger train aluminum alloy top cap and steel skeleton, including steel rectangular pipe and aluminium rectangular pipe, steelrectangular pipe and aluminium rectangular pipe contact, and this steel rectangular pipe sets up a plurality of along the axial single face round hole of the contact surface of this steel, aluminiumrectangular pipe on its non -contact face, and this single face round hole fit in passes a rivet, and this rivet is riveted this aluminium rectangular pipe and steel rectangular pipe on contact surface between them mutually, a plurality of indisputable auxiliary members that bury have still been welded to the bottom of steel rectangular pipe, the horizontal plane that should bury indisputable auxiliary member with the contact facial features of steel, aluminium rectangular pipe sets up perpendicularly. The utility model discloses can make steel, aluminium rectangular pipe all have reliable connection in two orientation