| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multipurpose truck going up and down the stairs with a load on it. SOLUTION: This truck is divided into a main body and a deck 3, the main body mounts shaft legs 12, a motor 5, gear and the like, and the deck 3 mounts a rack 4. The rack 4 is slid for the truck to go up and down the stairs and the like.
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