AN AUXILIARY SUPPORTING DEVICE FOR AN AIR PASSENGER BRIDGE AND AN AIR PASSENGER BRIDGE WITH THE AUXILIARY SUPPORTING DEVICE AND THE METHOD OF CONTROL THE AIR PASSENGER BRIDGE

摘要

The present invention relates to an auxiliary supporting unit for a boarding bridge, a boarding bridge with the same and method for improving stability of boarding bridge. The auxiliary supporting unit includes a leg support which can be driven to extend and retract; and a foot portion attached to one end of the leg support, wherein the foot portion can be supported on the ground when the leg support being extended and can leave the ground when the leg support being retracted.