| 摘要 |
The adjustable floor system is for installation inside a repair pit and preferably comprises top and bottom parts, a floor mounted on the top part, two folding leg assemblies distal from each other, connected between the top and bottom parts and movable between folded and unfolded positions and cylinders for moving the folding leg assemblies between the folded position where the floor is adjacent to a bottom surface of the repair pit and the unfolded position where the floor fills an upper opening of the repair pit. Preferably, the floor comprises elements and the adjustable floor system comprises a stair frame having steps. The elements of the floor are positioned over the steps of the stair frame when the folding leg assemblies are in the unfolded position, the elements laying down respectively on the steps while the folding leg assemblies are moving from the unfolded position to the folded position.
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