Rail traffic door beam sectional material structure

The invention provides a rail traffic door beam sectional material structure which comprises a long arm, an intermediate body, a rotary boss and a short arm. One end of the long arm and one end of therotary boss are perpendicularly connected to the two ends of the intermediate body, the other end of the rotary boss is perpendicularly connected to the short arm, a first connecting groove is formedin the top end of the long arm, a second connecting groove is formed in the middle portion of the long arm, a third connecting groove and a fourth connecting groove are formed in the intermediate body, and a fifth connecting groove is formed in the top end of the short arm; and the first connecting groove is composed of a first arc-shaped rod, a first L-shaped rod and a first stop block, all of which are sequentially connected, the first stop block is provided with a first protrusion facing the first arc-shaped rod, and the included angle between the first protrusion and the first L-shaped rod ranges from 30 degrees t