| 摘要 |
An electric power supply system for dock equipment at a freight loading dock, such equipment including dock levelers and truck restraints which are powered by electric motors. The emergency power supply system utilizes electric powered freight moving vehicles, such as lift trucks, which include on-board storage battery electric power sources. The dock equipment includes controllers which are provided with selector switches for selecting power from an electrical distribution system or from the lift trucks by way of a disconnectable power cable assembly. An AC voltage step-down transformer and rectifier are provided for supplying the proper voltage to the controller, depending on the voltage and current characteristics required of the dock equipment motor or motors.
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