The invention discloses a multistage expansion type trolley. The trolley comprises a cargo carrying platform, a grab rail installed on the cargo carrying platform and used for pushing and pulling, andwalking wheels installed at the lower side of the cargo carrying platform, the cargo carrying platform is of a folding structure composed of a bearing plate and expansion plates arranged on the leftside and the right side of the bearing plate, the left expansion plate is hinged to the left edge of the bearing plate, the right expansion plate is hinged to the right edge of the bearing plate, andopening and closing limiting devices used for limiting the opening angles of the expansion plates are arranged between the expansion plates and the bearing plate; the left expansion plate and the right expansion plate are respectively provided with tooth parts which are matched with each other; drawing grooves with backward openings are formed in the bearing plate and the expansion plate, and drawing plates in sliding fit with the drawing grooves are arranged in the drawing grooves in a matched mode; and the drawing plates on the expansion plates are each of a turning plate type drawing platestructure. The occupied space of the trolley can be reduced, and the bearing area of the cargo carrying platform can also be expanded in a folding, drawing and turning multistage manner.

    本发明公开了一种多级扩展式手推车,包括载货平台、安装在载货平台上用于推拉的扶手杆以及安装在载货平台下侧的行走轮,所述载货平台为由承重板以及在承重板左右两侧设置的扩展板组成的折叠式结构,左扩展板铰接于承重板的左边沿,右扩展板铰接于承重板的右边沿,且扩展板与承重板之间均设有用于限制扩展板打开角度的开合限位装置;左扩展板和右扩展板上还分别设有相互配合的齿部;承重板及扩展板内均设有开口向后侧的抽拉槽,抽拉槽内均配设有与其滑动配合的抽拉板;所述扩展板上的抽拉板为翻板式抽拉板结构。本发明能够能够减小手推车的占据空间,并且其载货平台的承载面积也能实现折叠、抽拉以及翻起的多级式扩展。


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    Title :

    Multistage expansion type trolley


    Additional title:

    一种多级扩展式手推车


    Contributors:
    WANG HAOBO (author) / ZHU XIDAO (author) / WANG JIACHEN (author) / CHEN BAIYUAN (author) / YU ZHENGCHEN (author) / REN HANCHENG (author) / WU MENG (author) / ZHU QINGXIANG (author) / PENG ZIHAN (author) / CHEN FEI'ER (author)

    Publication date :

    2020-06-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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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