| 主权项 |
1. A boarding bridge comprising:
a fixed tunnel of which one end is connected to a terminal or an extended fixed tunnel; and a rotunda of which one end is connected to the other end of the fixed tunnel and which is supported by a rotunda column, a movable tunnel configured to connect the rotunda to an airplane, wherein the movable tunnel is connected to the other end of the rotunda, and the other side of the movable tunnel is raised or lowered; and a first hinge unit including a first hinge provided at any one of one end of the fixed tunnel and the terminal, or any one of the one end of the fixed tunnel and the extended fixed tunnel, and a first hinge fixing member provided at the other one of the one end of the fixed tunnel and the terminal, or the other end of the one end of the fixed tunnel and the extended fixed tunnel, wherein the first hinge is a sliding hinge and the first hinge fixing member includes a first hinge guide part to enable the first hinge to be slid and moved, wherein the rotunda column is driven to raise or lower the rotunda wherein the rotunda column includes a raising and lowering unit, and the rotunda is raised or lowered by the raising and lowering unit, wherein the raising and lowering unit includes a hydraulic device, and the hydraulic device includes a hydraulic power unit configured to generate a hydraulic power and a hydraulic hose configured to transfer the hydraulic power generated from the hydraulic unit, wherein a driving unit configured to raise or lower the other side of the movable tunnel is provided on the other side of the movable tunnel, the driving unit is driven with a hydraulic power, wherein the driving unit is connected to a hydraulic hose of the hydraulic device and receives a driving force to raise or lower the other side of the movable tunnel from the hydraulic hose. |
