Patent ID: 7979937

Claim:
A boarding bridge comprising: a plurality of gangway units telescopically fitted together and capable of relative movement in a longitudinal direction; and a traveling unit mounted at the lower part of a supporting member that supports the gangway unit at the distal end and moving the supporting member by traveling; wherein the traveling unit includes: a pair of traveling devices disposed with a certain distance therebetween in the widthwise direction of the gangway unit, the traveling devices each having an axle rotatable about a vertically extending axis, a plurality of wheels rotatably mounted to the axle with a certain distance therebetween, and a driving member that rotationally drives the axle; and a synchronizing member that synchronizes traveling directions of the pair of traveling devices, wherein the synchronizing member includes: a pair of rotating sprockets each mounted to each of the rotating parts of the axles, an intermediate sprocket that is disposed at a substantially central position between the pair of the rotating sprockets, a chain winding around the rotating sprockets and the intermediate sprocket, a plurality of guide sprockets that guide the chain, and a stopping member that selectively engages with a rotation shaft of the intermediate sprocket and stops the movement of the chain.