| 摘要 |
PURPOSE: A door device of a special-purpose vehicle is provided to prevent inflow of water by step portion of a main door, and yet a height of water surface arrives to the main door. CONSTITUTION: A door device of a special-purpose vehicle comprises: a main door(100), a secondary door(200), a main door locking unit(300), a secondary door locking unit, and main door fixing unit(600). The main door is installed turn ably to open and close an opening of the special-purpose vehicle and the opening is formed in a part of the upper of the main door and the secondary door is installed turn ably to open and close the upper opening of the main door and the main door locking unit locks that the main door closes up the opening and the secondary door locking unit locks that the secondary door closes up the upper opening of the main door and the main door fixing unit opens that the main door closes up the opening.
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