| 摘要 |
A dock leveler or transfer bridge for ramps, comprising a bridge plate pivotally journalled at its rear end about a horizontal axis on a ramp. The front end of the bridge plate has a foldable or pivotal extension pivoted downwardly in the rest position and, in the working or effective position, pivoted into the plane of the bridge plate. The extension serves for exclusive support of the bridge plate upon the vehicle which is to be loaded or unloaded. When the dock leveler is not being used, the bridge plate is supported upon a pendulum-like strut or support located at the front end thereof. This pendulum-like support, by means of a lever pivotal with the extension, holds or maintains a pivot position for introducing the bridge plate into a ramp recess. In this pivot position, the strut or support cannot correspond or align with its abutment. The strut has an extension prolongation located above its pivot shaft, with the lever engaging behind the prolongation by means of a pull rod pivotally connected to the lever.
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