| 摘要 |
PURPOSE: A moving ramp for a ship is provided to attach a multi-step spring box to a driving shaft of the moving ramp to move the moving ram up and down using only a small amount of power provided by the principle of the lever and the elastic force. CONSTITUTION: A moving ramp for a ship is installed on a hull, is connected to an opening and closing system, and rotates in principle by a lever. A moving ramp for a ship includes an inclined plate(210) and a multi-step spring box(220). The inclined plate provides a moving path of a vehicle and has a central axis(211) of a lever. The multi-step spring box is installed on the lower end of one end of the inclined plate and provides an elastic force upwards against an inclined plate by piling up multiple springs to be overlapped inside.
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