The invention discloses a cart with extension-type wheels. Extension-type wheel sets are mounted in the front and in the back of the bottom of a cart carriage. Each extension-type wheel set comprises a wheel, a connecting-rod extension mechanism and a hydraulic cylinder. Each pair of extension-type wheel sets can be adjusted to ascend and descend within a certain range according to needs, so that when the cart needs to pass two ground surfaces different in height, the height of the extension-type wheel sets can be adjusted sequentially, and the cart can cross an obstacle caused by the ground surfaces different in height stably. The trouble of inconvenience in passing can be omitted particularly when the cart carries a plenty of goods; since the extension-type wheel sets are adjusted to ascend and descend in pairs, the goods carried in the cart can be kept horizontal as far as possible during passing, and side tilt is reduced.


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    Title :

    Cart with extension-type wheels


    Contributors:
    TAN PINPIN (author) / SHU JIANWEI (author) / CHEN CHUICE (author) / LIU CHUNJIAN (author) / CHEN XI (author) / LUAN GUANGCAN (author) / TAN HONGCHAO (author) / YAN LINGYUN (author)

    Publication date :

    2015-08-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62B Von Hand bewegte Fahrzeuge, z.B. Handkarren oder Kinderwagen , HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS



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