Patent ID: 11964443
Assignee: CRRC QINGDAO SIFANG CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for connecting a connection piece to a U-shaped ring beam for a head module for rail vehicles, wherein the head module consists predominantly of fibre-reinforced plastic material and has an outer shell, and the ring beam consists of fibre-reinforced plastic material and is arranged as stiffener in a roof area of the outer shell, having at least the following steps:
a) preparing a mould for the outer shell with a section mould for the ring beam,
b) preparing a fibre-reinforcing structure of the ring beam which structure is dry or impregnated with matrix material and unconsolidated, and placing it in the section mould,
c) preparing the connection piece for each end of the U-shaped ring beam,
d) preparing connecting elements,
e) feeding the connecting elements through the fibre-reinforcing structure of the ring beam or construction in plies of the fibre-reinforcing structure, wherein each ply is deposited while being penetrated by the connecting elements,
f) feeding the connecting elements through openings of the connection pieces provided for this purpose,
g) constructing the outer shell from fibre-reinforcing material and impregnating the fibre-reinforcing material of outer shell and ring beam with matrix material,
h) jointly consolidating ring beam and outer shell,
i) fixing the connecting elements such that they are fixed on both sides of the ring beam, including the connection pieces.