| 摘要 |
A hinged flap (130) located at the ship end of a ship-to-shore bridge for vehicular access to a ferry vessel is adapted to receive a ramp (136) lowered from the vessel. The angle of inclination of the flap (130) is adjustable by means of hydraulic cylinders (134), and is placed under automatic control so as to maintain an optimum transition angle between the flap (130) and the ramp (136). Angle sensing means (140) are temporarily located on the ramp (136) to monitor the transitional angle, the output from the sensor (140) controls operation of the cylinders (134). A further angle sensor (148) may be located on the main deck of the bridge to monitor the angle between the deck and the flap (130), and may be used to control variable ballast means varying the buoyancy of the ship end of the bridge to maintain an optimum angle between the deck and the bridge. Also described are embodiments of floating bridge structures incorporating automatically controlled buoyancy tanks adapted to maintain the shore end of the deck level with an adjoining quay and automatically controlled shore end deck flaps adapted to maintain the flaps parallel to the quay. |
