| 摘要 |
The loading ramps structure of the present invention includes: the first and the second ladder structure, respectively including two parallel side racks, several fixed crosswise racks set between said two side racks and pivotally-connecting section set on one end of said side rack, and one pivotally-connecting structure including one pair of the first pivotally-connecting pieces set on the side racks of the first ladder structure and one pair of the second pivotally-connecting pieces set on the side racks of the second ladder structure. The first and the second pivotally-connecting pieces jointly connect with the pivots fixed on both ends of the pivotally-connecting sections of the second ladder structure.
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