| 摘要 |
PROBLEM TO BE SOLVED: To prevent the contact of a transfer board with a floor surface in expanding and contracting a tunnel part, in a passenger boarding bridge to be laid between a terminal building and a transportation facility such as an airplane or a vessel through the tunnel part or the like for a passenger getting on and off the airplane or vessel, and to eliminate the clearance between the transfer board and the floor surface in the connection of the terminal side to the vehicle side to pass the passenger. SOLUTION: The transfer board which forms an inclined surface instead of a difference in level of the floor surface is rockably set in the joint end part of a minor diameter tunnel part laid in a telescopic structure by fitting its end to the end of a major diameter tunnel part. A push-up device is arranged under the transfer board. The push-up device is operated following the expanding and contracting movement of the tunnel part to rock the transfer board, whereby the position of the transfer board to the floor surface is optionally set when expanding and contracting the tunnel part and when passing passengers after the end of movement. COPYRIGHT: (C)2004,JPO
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