| 摘要 |
PURPOSE: A rollup-type top door structure of a special-purpose vehicle is provided to operate at the same time by opening both rollup doors in loading articles on a top body by forming the rollup doors vertically slid and opened and closed to both sides of the top body, to open and close the rollup doors with little power of operators, and to improve the exterior shape and durability by vertically opening and closing the rollup doors. CONSTITUTION: A rollup-type top door structure of a special-purpose vehicle is composed of a central partition(2) for crossing the central part of a top body(1) and dividing the inner part of the top body into two housing spaces(3); a pair of guide rails(4a,4b) extended from both lower ends of an inlet of the housing space to the upside and horizontally from the upside to the other side; a rollup door(5) guided by the guide rails to vertically move and to open and close both sides of the top body; a drive unit fixed and installed in the upper part of the top body at which the rollup door is mounted, to pull up and open and close the rollup door closed by self-torsional elasticity; and a rollup wire(24) of the constant length for connecting the drive unit and the upside of the rollup door.
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