Air passenger boarding bridge or escalator

摘要

The invention relates to an air passenger boarding bridge with an frontal transition part (1) or an escalator (4), wherein the transition part (1) comprises a base (12) and a bellows with frontal bumper (8), the bellows comprises a plurality of bellows elements (7), the transition part in the area of the base (12) has at least one guide rod (20) for longitudinally displaceable control of several bellows elements (7) in the length direction of the guide rod, and the guide rod (20) in the area of the bumper (8) bends towards the direction of the base (12) in an arc manner.